WO2021033805A1

WO2021033805A1 - Electronic device having transparent antenna

Info

Publication number: WO2021033805A1
Application number: PCT/KR2019/010667
Authority: WO
Inventors: 우승민
Original assignee: 엘지전자 주식회사
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2021-02-25

Abstract

Provided is an electronic device having a transparent antenna for 5G communication according to the present invention. The electronic device comprises: an antenna built into a display and operating therein; and a transmission line feeding power to the antenna. Meanwhile, the transmission line includes a plurality of metal mesh lines arranged parallel to a boundary line, and orthogonal metal mesh lines arranged in a direction orthogonal to the boundary line and spaced apart from each other by a predetermined interval, and provides a square metal mesh structure in consideration of the current direction of the transmission line, thereby reducing loss due to mesh lines with different current directions.

Description

Electronic device with transparent antenna

The present invention relates to an electronic device having a transparent antenna. More specifically, it relates to an electronic device having a transparent antenna incorporated in a display.

Electronic devices can be divided into mobile/portable terminals and stationary terminals depending on whether they can be moved. Again, electronic devices can be divided into handheld terminals and vehicle mounted terminals depending on whether the user can directly carry them.

The functions of electronic devices are diversifying. For example, there are functions of data and voice communication, taking pictures and videos through a camera, recording voice, playing music files through a speaker system, and outputting images or videos to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals providing visual content such as broadcasting and video or television programs.

As such electronic devices are diversified, they are implemented in the form of a multimedia player with complex functions such as, for example, taking photos or videos, playing music or video files, and receiving games and broadcasts. have.

In order to support and increase the function of the electronic device, it may be considered to improve the structural part and/or the software part of the terminal.

In addition to the above attempts, wireless communication systems using LTE communication technology have recently been commercialized in electronic devices, providing various services. In addition, in the future, wireless communication systems using 5G communication technology are expected to be commercialized and provide various services. Meanwhile, some of the LTE frequency bands may be allocated to provide 5G communication services.

In this regard, the mobile terminal may be configured to provide 5G communication services in various frequency bands. Recently, attempts have been made to provide a 5G communication service using a Sub6 band below 6GHz band. However, in the future, it is expected to provide 5G communication service using millimeter wave (mmWave) band in addition to Sub6 band for faster data rate.

Meanwhile, the frequency bands to be allocated for 5G communication services in the millimeter wave (mmWave) band are the 28 GHz band, 39 GHz and 64 GHz bands. In this regard, a plurality of array antennas may be disposed in the electronic device in the millimeter wave band.

Meanwhile, in addition to the plurality of array antennas, a plurality of other antennas may be disposed in the electronic device. Accordingly, it is necessary to transmit and receive signals through the front side of the electronic device while preventing interference with a plurality of existing antennas. To this end, research on a transparent antenna implemented with a metal mesh line embedded in a display of an electronic device is being conducted.

Meanwhile, a CPW line may be considered as a transmission line for supplying and transmitting signals to a transparent antenna having a metal mesh structure. In this CPW line structure, the thickness and line width of the mesh line may be increased in order to reduce the loss caused by the transmission line.

However, there is a problem in that transparency decreases when the thickness and line width of the mesh line are increased for the transmission line of the metal mesh structure. Accordingly, there is a need for a study on a mesh structure capable of reducing losses due to transmission lines without significantly increasing the thickness and line width in the metal mesh structure.

In this regard, a diamond-shaped metal mesh structure built into the display is implemented in a shape regardless of the current direction of the transmission line. Accordingly, when a transmission line is implemented only with a rhombus-shaped metal mesh structure, there is a problem that the transmission line structure cannot be optimized into a low-loss structure in consideration of current distribution.

It is an object of the present invention to solve the above and other problems. In addition, another object is to reduce loss due to a transmission line in an electronic device having a transparent antenna.

Another object of the present invention is to propose an optimal structure for reducing loss in a transmission line having a metal mesh structure.

Another object of the present invention is to propose an optimal structure for high efficiency and low loss in a metal mesh structure antenna and transmission line.

In order to achieve the above or other objects, an electronic device provided with a transparent antenna for 5G communication according to the present invention is provided. The electronic device may include an antenna built into the display and operating; And a transmission line for feeding the antenna. Meanwhile, the transmission line is a plurality of metal mesh lines arranged parallel to the boundary line, and orthogonal metal mesh lines arranged in a direction orthogonal to the boundary line and spaced apart from each other at a predetermined interval. line), by providing a rectangular metal mesh structure in consideration of the current direction of the transmission line, it is possible to reduce losses due to mesh lines having different current directions. Here, the plurality of metal mesh lines may be arranged in a direction in which current flows on the transmission line. In addition, by arranging orthogonal lines capable of canceling a current component due to a reflected signal or the like in a transmission line at predetermined intervals, loss is reduced in the mesh line and reliability can be improved even when the mesh line is partially cut.

According to an embodiment, the shape of the metal mesh line inside the transmission line may be configured as a rectangular mesh line shape. Here, the intervals between the rectangular mesh lines may be arranged at finer intervals than the square mesh in the direction of current flow, and may be arranged at wider intervals than the square mesh in the orthogonal direction.

According to an embodiment, an interval between the metal mesh lines in the vicinity of the boundary of the transmission line may be arranged at a finer interval. Accordingly, the closer to the inner center of the transmission line, the wider the spacing between the metal mesh lines may be. In addition, as spaced outward from the boundary of the transmission line, the space between the metal mesh lines may be arranged at a wider interval.

According to an embodiment, the transmission line may include a plurality of vertical lines and a plurality of segmented horizontal lines. In this regard, the segmented plurality of horizontal lines may be disposed to cross the plurality of vertical lines or may be disposed between the plurality of vertical lines. Meanwhile, a plurality of horizontal lines may be disposed at a predetermined interval in the horizontal axis direction.

According to an embodiment, the transmission line includes an inner conductor region operating as a signal line; An outer conductor region acting as ground; And a dielectric region formed between the inner conductor region and the outer conductor region, and may have a Co-Planar Waveguide (CPW) line structure. Here, based on the current distribution, an interval between the metal mesh lines may be arranged at a finer interval at a boundary of the inner conductor region adjacent to the dielectric region than at the center of the inner conductor region.

According to an embodiment, based on the current distribution, a spacing between the metal mesh lines may be arranged at a finer interval at an inner boundary of the outer conductor region adjacent to the dielectric region than an outer boundary of the inner conductor region.

According to an embodiment, the shape of the metal mesh line inside the transmission line may be configured as a rhombus mesh line shape. Meanwhile, the spacing of the rhombus mesh lines near the boundary of the transmission line may be formed more finely than the spacing of the rhombus mesh lines near the center of the transmission line.

According to an embodiment, the shape of the metal mesh line inside the transmission line is a rhombus mesh line shape, and the orthogonal metal mesh lines may be spaced apart at predetermined intervals in a direction orthogonal to a boundary of the transmission line.

According to an embodiment, the shape of the metal mesh line inside the transmission line is a rhombus mesh line shape, and the transmission line further includes at least one second metal mesh line in a direction parallel to the boundary of the transmission line. I can.

According to an embodiment, the spacing between the orthogonal metal mesh lines may correspond to a fourth or half wavelength of an operating frequency.

According to an embodiment, the antenna includes a plurality of metal mesh lines arranged in a direction in which current flows; And an orthogonal metal mesh line disposed in a direction orthogonal to the direction and spaced apart from each other at a predetermined interval. Accordingly, there is an advantage in that a structure having an optimized topology and line width can be presented for an optimized radiation efficiency and a low loss structure, respectively, in the antenna and the transmission line.

According to an embodiment, the shape of the metal mesh line inside the antenna is a shape of a rectangular mesh line, and an interval between the rectangular mesh lines may be arranged at a finer interval than a square mesh in a direction in which the current flows. Meanwhile, the spacing between the rectangular mesh lines may be arranged at a wider spacing than the square mesh in the orthogonal direction.

According to an embodiment, a spacing between the metal mesh lines near a boundary of the antenna may be disposed at a finer spacing, and as a distance closer to an inner center of the antenna, the spacing between the metal mesh lines may be disposed at a wider spacing. Meanwhile, the distance between the metal mesh lines may be arranged at a wider distance as the distance from the boundary of the antenna to the outside.

According to an embodiment, the antenna may be formed as an array antenna for beamforming. Meanwhile, each antenna element of the array antenna may be connected to an inner conductor of the CPW line through a matching portion. In addition, the electronic device may further include a transceiver circuit disposed on the rear surface of the display, connected to each antenna element of the array antenna, and configured to transmit a signal to each of the antenna elements.

According to an embodiment, the array antenna may include first to fourth array antennas disposed at an upper left, an upper right, a lower left, and a lower right inside the display of the electronic device. Meanwhile, the transmission/reception unit circuit may include first to fourth transmission/reception unit circuits configured to transmit signals to each of the first to fourth array antennas.

An electronic device in which a transparent antenna according to another aspect of the present invention is provided as an array antenna is provided. The electronic device may include a display; An array antenna disposed inside the display and formed through a metal mesh line; And a transmission line for feeding the antenna. Here, the transmission line includes a plurality of metal mesh lines arranged in a direction in which current flows, and orthogonal metal mesh lines arranged in a direction orthogonal to the direction and spaced apart from each other at predetermined intervals. line).

According to an embodiment, a shape of a metal mesh line inside the transmission line may be a rectangular mesh line, and a spacing between the rectangular mesh lines may be arranged at a finer distance than a square mesh in a direction in which the current flows. Meanwhile, the intervals between the rectangular mesh lines may be arranged at a wider interval than the square mesh in the orthogonal direction.

According to an embodiment, the spacing between the metal mesh lines in the vicinity of the boundary of the transmission line may be arranged at a finer distance, and the closer to the inner center of the transmission line, the spacing between the metal mesh lines may be disposed at a wider interval. have. Meanwhile, as spaced outward from the boundary of the transmission line, the distance between the metal mesh lines may be arranged at a wider distance.

According to an embodiment, the transmission line includes an inner conductor region operating as a signal line; An outer conductor region acting as ground; And a dielectric region formed between the inner conductor region and the outer conductor region, and may have a Co-Planar Waveguide (CPW) line structure. On the other hand, based on the current distribution, an interval between the metal mesh lines may be arranged at a finer interval at a boundary of the inner conductor region adjacent to the dielectric region than at the center of the inner conductor region.

According to an embodiment, the shape of the metal mesh line inside the transmission line is in the shape of a rhombus mesh line, and the spacing of the rhombus mesh line near the boundary of the transmission line is greater than the spacing of the rhombus mesh line near the center of the transmission line. It can be formed in detail. On the other hand, the orthogonal metal mesh lines are arranged to be spaced apart at predetermined intervals in a direction perpendicular to a boundary of the transmission line, and the transmission line further includes at least one second metal mesh line in a direction parallel to the boundary of the transmission line. Can include.

According to the present invention, there is an advantage in that an electronic device having a transparent antenna provides a square metal mesh structure in consideration of a current direction of a transmission line, so that loss due to mesh lines having different current directions can be reduced.

In addition, according to the present invention, orthogonal lines capable of canceling current components due to reflection signals, etc. in the transmission line are arranged at predetermined intervals, thereby reducing losses in the mesh line and improving reliability even when the mesh line is partially cut. have.

In addition, according to the present invention, there is an advantage in that a structure having an optimized topology and a line width can be presented for an optimized radiation efficiency and a low loss structure, respectively, in an antenna and a transmission line.

Further scope of applicability of the present invention will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, specific embodiments such as the detailed description and preferred embodiments of the present invention should be understood as being given by way of example only.

1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views of an example of an electronic device related to the present disclosure viewed from different directions.

2 shows a configuration of a wireless communication unit of an electronic device capable of operating in a plurality of wireless communication systems according to the present invention.

3 shows an example of a configuration in which a plurality of antennas of an electronic device according to the present invention can be disposed.

4A shows an electronic device including a transparent antenna and a transmission line incorporated in a display according to the present invention.

4B shows the structure of a display in which a transparent antenna is embedded according to the present invention.

5A shows an adaptive mesh structure and a general rectangular mesh structure according to the present invention.

5B shows a transmission line of an AM structure including horizontal lines having a segment structure according to an embodiment of the present invention.

6 shows a case in which an orthogonal line is added and a case in which a non-regular mesh structure is applied in the adaptive mesh structure according to the present invention.

7 shows a case where an orthogonal line is added and a non-regular mesh structure is applied in the adaptive mesh structure according to the present invention.

8 shows a CPW structure implemented by a metal mesh line on a substrate in a transmission line structure embedded in a display according to the present invention.

9 is an enlarged view of a signal line around a dielectric region and a metal mesh at the ground in the adaptive mesh structure according to the present invention.

10A shows an insertion loss (S21) value according to a thickness change of a metal mesh line in relation to the present invention.

10B shows an insertion loss (S21) value according to a line width change of a metal mesh line in relation to the present invention.

11 is a comparison of insertion loss results in various transmission line structures, square mesh structures, and ideal CPW structures according to the present invention.

12 is an adaptive mesh (AM) structure applied to a rhombus-shaped mesh structure according to the present invention.

13 is an orthogonal mesh (OM) structure applied to the rhombus-shaped mesh structure according to the present invention.

14 is a non-regular mesh (IM) structure applied to the CPW structure having a rhombus-shaped mesh structure according to the present invention.

15 shows a transmission line and an antenna to which a metal mesh structure according to the present invention is applied.

16 shows a case where the transparent antenna according to the present invention is applied as an array antenna.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Electronic devices described herein include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistants (PDA), a portable multimedia player (PMP), a navigation system, and a slate PC. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)), etc. may be included. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TVs, desktop computers, and digital signage, except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views of an example of an electronic device related to the present disclosure viewed from different directions.

The electronic device 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190. ), etc. The components shown in FIG. 1A are not essential for implementing an electronic device, and thus an electronic device described in the present specification may have more or fewer components than the components listed above.

More specifically, among the components, the wireless communication unit 110 may be configured between the electronic device 100 and the wireless communication system, between the electronic device 100 and other electronic devices 100, or between the electronic device 100 and an external server. It may include one or more modules that enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules that connect the electronic device 100 to one or more networks. Here, the one or more networks may be, for example, a 4G communication network and a 5G communication network.

The wireless communication unit 110 may include at least one of a 4G wireless communication module 111, a 5G wireless communication module 112, a short-range communication module 113, and a location information module 114.

The 4G wireless communication module 111 may transmit and receive 4G base stations and 4G signals through a 4G mobile communication network. At this time, the 4G wireless communication module 111 may transmit one or more 4G transmission signals to the 4G base station. In addition, the 4G wireless communication module 111 may receive one or more 4G reception signals from the 4G base station.

In this regard, an uplink (UL) multi-input multi-output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to the 4G base station. In addition, a downlink (DL) multi-input multiple output (MIMO) may be performed by a plurality of 4G reception signals received from a 4G base station.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals through a 5G mobile communication network. Here, the 4G base station and the 5G base station may have a non-stand-alone (NSA) structure. For example, the 4G base station and the 5G base station may have a co-located structure disposed at the same location within a cell. Alternatively, the 5G base station may be disposed in a separate location from the 4G base station in a stand-alone (SA) structure.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals through a 5G mobile communication network. In this case, the 5G wireless communication module 112 may transmit one or more 5G transmission signals to the 5G base station. In addition, the 5G wireless communication module 112 may receive one or more 5G received signals from the 5G base station.

In this case, the 5G frequency band may use the same band as the 4G frequency band, and this may be referred to as LTE re-farming. On the other hand, as the 5G frequency band, the Sub6 band, which is a band below 6GHz, may be used.

On the other hand, a millimeter wave (mmWave) band may be used as a 5G frequency band to perform broadband high-speed communication. When a millimeter wave (mmWave) band is used, the electronic device 100 may perform beam forming to expand communication coverage with a base station.

Meanwhile, regardless of the 5G frequency band, in a 5G communication system, a greater number of multiple input multiple outputs (MIMO) may be supported to improve transmission speed. In this regard, uplink (UL) MIMO may be performed by a plurality of 5G transmission signals transmitted to the 5G base station. In addition, downlink (DL) MIMO may be performed by a plurality of 5G reception signals received from the 5G base station.

Meanwhile, the wireless communication unit 110 may be in a dual connectivity (DC) state with a 4G base station and a 5G base station through the 4G wireless communication module 111 and the 5G wireless communication module 112. In this way, the dual connection between the 4G base station and the 5G base station may be referred to as EN-DC (EUTRAN NR DC). Here, EUTRAN is an Evolved Universal Telecommunication Radio Access Network, which means 4G wireless communication system, and NR is New Radio, which means 5G wireless communication system.

On the other hand, if the 4G base station and the 5G base station have a co-located structure, it is possible to improve throughput through inter-CA (Carrier Aggregation). In the EN-DC state, a 4G reception signal and a 5G reception signal may be simultaneously received through the 4G wireless communication module 111 and the 5G wireless communication module 112.

The short range communication module 113 is for short range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC. Near field communication may be supported by using at least one of (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. The short-range communication module 114 may be configured between the electronic device 100 and a wireless communication system, between the electronic device 100 and other electronic devices 100, or between the electronic device 100 and other electronic devices 100 through wireless area networks. ) And a network in which the other electronic device 100 or an external server is located may support wireless communication. The local area wireless communication network may be a wireless personal area network (Wireless Personal Area Networks).

Meanwhile, short-range communication between electronic devices may be performed using the 4G wireless communication module 111 and the 5G wireless communication module 112. In an embodiment, short-range communication may be performed between electronic devices through a device-to-device (D2D) method without passing through a base station.

Meanwhile, carrier aggregation (CA) using at least one of the 4G wireless communication module 111 and 5G wireless communication module 112 and the Wi-Fi communication module 113 for transmission speed improvement and communication system convergence (convergence) This can be done. In this regard, 4G + WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module 111 and the Wi-Fi communication module 113. Alternatively, 5G + WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module 112 and the Wi-Fi communication module 113.

The location information module 114 is a module for obtaining a location (or current location) of an electronic device, and a representative example thereof is a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if the electronic device utilizes a GPS module, the electronic device may acquire the location of the electronic device using a signal transmitted from a GPS satellite. As another example, when the electronic device utilizes the Wi-Fi module, the location of the electronic device may be obtained based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 114 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the electronic device as a substitute or additionally. The location information module 114 is a module used to obtain the location (or current location) of the electronic device, and is not limited to a module that directly calculates or obtains the location of the electronic device.

Specifically, if the electronic device utilizes the 5G wireless communication module 112, the electronic device may acquire the location of the electronic device based on information of the 5G wireless communication module and a 5G base station transmitting or receiving a wireless signal. In particular, since the 5G base station in the mmWave band is deployed in a small cell having a narrow coverage, it is advantageous to obtain the location of the electronic device.

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, or an audio input unit, and a user input unit 123 for receiving information from a user, for example, , A touch key, a mechanical key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the electronic device, information on surrounding environments surrounding the electronic device, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the electronic device disclosed in this specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of the display unit 151, the sound output unit 152, the hap tip module 153, and the light output unit 154 can do. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. The touch screen may function as a user input unit 123 that provides an input interface between the electronic device 100 and a user, and may provide an output interface between the electronic device 100 and a user.

The interface unit 160 serves as a passage between various types of external devices connected to the electronic device 100. The interface unit 160 connects a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a device equipped with an identification module. It may include at least one of a port, an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The electronic device 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

In addition, the memory 170 stores data supporting various functions of the electronic device 100. The memory 170 may store a plurality of application programs or applications driven by the electronic device 100, data for the operation of the electronic device 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the electronic device 100 from the time of delivery for basic functions of the electronic device 100 (eg, incoming calls, outgoing functions, message receiving, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the electronic device 100, and driven by the controller 180 to perform an operation (or function) of the electronic device.

In addition to operations related to the application program, the controller 180 generally controls overall operations of the electronic device 100. The controller 180 may provide or process appropriate information or functions to a user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

Also, in order to drive an application program stored in the memory 170, the controller 180 may control at least some of the components examined together with FIG. 1A. Furthermore, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the electronic device 100 with each other.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to each of the components included in the electronic device 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the respective components may operate in cooperation with each other to implement an operation, control, or control method of an electronic device according to various embodiments described below. In addition, the operation, control, or control method of the electronic device may be implemented on the electronic device by driving at least one application program stored in the memory 170.

1B and 1C, the disclosed electronic device 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and may be applied to various structures such as a watch type, a clip type, a glass type, or a folder type in which two or more bodies are relatively movably coupled, a flip type, a slide type, a swing type, and a swivel type. . Although it will relate to a specific type of electronic device, a description of a specific type of electronic device may be generally applied to other types of electronic devices.

Here, the terminal body may be understood as a concept referring to the electronic device 100 as at least one aggregate.

The electronic device 100 includes a case (for example, a frame, a housing, a cover, etc.) forming an exterior. As shown, the electronic device 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside. Meanwhile, a part of the side surface of the rear case 102 may be implemented to operate as a radiator.

As shown, when the rear cover 103 is coupled to the rear case 102, a part of the side surface of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

The electronic device 100 includes a display unit 151, first and second

sound output units

152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, and first and second sound output units.

Cameras

121a and 121b, first and second operation units 123a and 123b, microphone 122, interface unit 160, and the like may be provided.

The display unit 151 displays (outputs) information processed by the electronic device 100. For example, the display unit 151 may display execution screen information of an application program driven by the electronic device 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

In addition, two or more display units 151 may exist depending on the implementation form of the electronic device 100. In this case, in the electronic device 100, a plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. Content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia reproduction sounds. ) Can be implemented.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, e-mail reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the light output.

The first camera 121a processes an image frame of a still image or moving picture obtained by an image sensor in a photographing mode or a video call mode. The processed image frame may be displayed on the display unit 151 and may be stored in the memory 170.

The first and second manipulation units 123a and 123b are an example of a user input unit 123 that is operated to receive a command for controlling the operation of the electronic device 100, and may also be collectively referred to as a manipulating portion. have. The first and second operation units 123a and 123b may be employed in any manner as long as the user operates while receiving a tactile feeling such as touch, push, and scroll. In addition, the first and second manipulation units 123a and 123b may also be employed in a manner in which the first and second manipulation units 123a and 123b are operated without a user's tactile feeling through proximity touch, hovering touch, or the like.

Meanwhile, the electronic device 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice and other sounds. The microphone 122 may be provided in a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the electronic device 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the electronic device 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an array camera. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 illuminates light toward the subject when the subject is photographed by the second camera 121b.

A second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a, and may be used to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. Meanwhile, a plurality of antennas connected to the 4G wireless communication module 111 and the 5G wireless communication module 112 may be disposed on the side of the terminal. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

Meanwhile, four or more antennas disposed on the side of the terminal may be implemented to support MIMO. In addition, when the 5G wireless communication module 112 operates in a millimeter wave (mmWave) band, since each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be disposed in the electronic device.

The terminal body is provided with a power supply unit 190 (refer to FIG. 1A) for supplying power to the electronic device 100. The power supply unit 190 may include a battery 191 built in the terminal body or configured to be detachable from the outside of the terminal body.

Hereinafter, a structure of a multiplex transmission system according to the present invention and an electronic device having the same, in particular, a power amplifier in a heterogeneous radio system and embodiments related to an electronic device having the same will be described with reference to the accompanying drawings. It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

2 shows a configuration of a wireless communication unit of an electronic device capable of operating in a plurality of wireless communication systems according to the present invention. Referring to FIG. 2, the electronic device includes a first power amplifier 210, a second power amplifier 220, and an RFIC 250. In addition, the electronic device may further include a modem 400 and an application processor 500. Here, the modem 400 and the application processor AP 500 may be physically implemented in one chip, and may be implemented in a logically and functionally separate form. However, the present invention is not limited thereto and may be implemented in the form of physically separated chips depending on the application.

Meanwhile, the electronic device includes a plurality of low noise amplifiers (LNAs) 410 to 440 in the receiver. Here, the first power amplifier 210, the second power amplifier 220, the power and phase control unit 230, the control unit 250, and a plurality of low noise amplifiers 310 to 340 are all the first communication system and the second communication Can operate in the system. In this case, the first communication system and the second communication system may be a 4G communication system and a 5G communication system, respectively.

As shown in FIG. 2, the RFIC 250 may be configured as a 4G/5G integrated type, but is not limited thereto and may be configured as a 4G/5G separate type according to an application. When the RFIC 250 is configured as a 4G/5G integrated type, it is advantageous in terms of synchronization between 4G/5G circuits and has an advantage that control signaling by the modem 400 can be simplified.

Meanwhile, when the RFIC 250 is configured as a 4G/5G separate type, it may be referred to as a 4G RFIC and a 5G RFIC, respectively. In particular, when the 5G band and the 4G band have a large difference in bands, such as when the 5G band is configured as a millimeter wave band, the RFIC 250 may be configured as a 4G/5G separate type. In this way, when the RFIC 250 is configured as a 4G/5G separate type, there is an advantage that RF characteristics can be optimized for each of the 4G band and the 5G band.

Meanwhile, even when the RFIC 250 is configured as a 4G/5G separate type, the 4G RFIC and the 5G RFIC are logically and functionally separated, and physically, it is possible to be implemented in one chip.

Meanwhile, the application processor (AP) 500 is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP) 500 may control the operation of each component of the electronic device through the modem 400.

For example, the modem 400 may be controlled through a power management IC (PMIC) for low power operation of an electronic device. Accordingly, the modem 400 may operate the power circuit of the transmitter and the receiver through the RFIC 250 in a low power mode.

In this regard, when it is determined that the electronic device is in the idle mode, the application processor AP 500 may control the RFIC 250 through the modem 300 as follows. For example, if the electronic device is in the idle mode, at least one of the first and

second power amplifiers

110 and 120 operates in a low power mode or is turned off through the modem 300 through the RFIC. 250 can be controlled.

According to another embodiment, when the electronic device is in a low battery mode, the application processor (AP) 500 may control the modem 300 to provide wireless communication capable of low power communication. For example, when an electronic device is connected to a plurality of entities among a 4G base station, a 5G base station, and an access point, the application processor (AP) 500 may control the modem 400 to enable wireless communication with the lowest power. Accordingly, even though the throughput is slightly sacrificed, the application processor (AP) 500 may control the modem 400 and the RFIC 250 to perform short-range communication using only the short-range communication module 113.

According to another embodiment, when the remaining battery power of the electronic device is equal to or greater than a threshold, the modem 300 may be controlled to select an optimal wireless interface. For example, the application processor (AP, 500) may control the modem 400 to receive through both the 4G base station and the 5G base station according to the remaining battery capacity and available radio resource information. In this case, the application processor (AP, 500) may receive the remaining battery level information from the PMIC, and the available radio resource information from the modem 400. Accordingly, if the remaining battery capacity and available radio resources are sufficient, the application processor (AP, 500) may control the modem 400 and the RFIC 250 to receive reception through both the 4G base station and the 5G base station.

Meanwhile, in the multi-transceiving system of FIG. 2, the transmitting unit and the receiving unit of each radio system may be integrated into one transmitting and receiving unit. Accordingly, there is an advantage in that a circuit part integrating two types of system signals can be removed from the RF front-end.

In addition, since the front end parts can be controlled by the integrated transmission/reception unit, the front end parts can be integrated more efficiently than when the transmission/reception system is separated for each communication system.

In addition, when separated for each communication system, it is impossible to control other communication systems as necessary, or because a system delay is increased due to this, it is impossible to efficiently allocate resources. On the other hand, the multiple transmission/reception system as shown in FIG. 2 has the advantage of enabling efficient resource allocation since it is possible to control other communication systems as needed, and thereby minimize system delay.

Meanwhile, the first power amplifier 210 and the second power amplifier 220 may operate in at least one of the first and second communication systems. In this regard, when the 5G communication system operates in the 4G band or the Sub6 band, the first and second power amplifiers 220 can operate in both the first and second communication systems.

On the other hand, when the 5G communication system operates in the millimeter wave (mmWave) band, one of the first and

second power amplifiers

210 and 220 may operate in the 4G band and the other may operate in the millimeter wave band. have.

Meanwhile, by integrating the transmitting and receiving unit and the receiving unit, it is possible to implement two different wireless communication systems with a single antenna using a transmitting and receiving antenna. At this time, 4x4 MIMO can be implemented using four antennas as shown in FIG. 2. In this case, 4x4 DL MIMO may be performed through downlink (DL).

Meanwhile, if the 5G band is the Sub6 band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in both the 4G band and the 5G band. On the other hand, if the 5G band is a millimeter wave (mmWave) band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in any one of the 4G band and the 5G band. In this case, if the 5G band is a millimeter wave (mmWave) band, each of a plurality of separate antennas may be configured as an array antenna in the millimeter wave band.

Meanwhile, the power and phase controller 230 may control the magnitude and/or phase of signals applied to each of the antennas ANT1 to ANT4. In this regard, the power and phase controller 230 may control the magnitude and/or phase of a signal even when each of the antennas ANT1 to ANT4 operates in a millimeter wave (mmWave) band. Specifically, the power and phase controller 230 may control the magnitude and/or phase of a signal applied to each antenna element of each of the array antennas ANT1 to ANT4.

Meanwhile, 2x2 MIMO can be implemented using two antennas connected to the first power amplifier 210 and the second power amplifier 220 among the four antennas. In this case, 2x2 UL MIMO (2 Tx) may be performed through uplink (UL). Alternatively, it is not limited to 2x2 UL MIMO, and may be implemented with 1 Tx or 4 Tx. In this case, when the 5G communication system is implemented with 1 Tx, only one of the first and

second power amplifiers

210 and 220 needs to operate in the 5G band. Meanwhile, when the 5G communication system is implemented with 4Tx, an additional power amplifier operating in the 5G band may be further provided. Alternatively, a transmission signal may be branched in each of one or two transmission paths, and the branched transmission signal may be connected to a plurality of antennas.

On the other hand, a switch-type splitter or power divider is built into the RFIC corresponding to the RFIC 250, so that separate parts do not need to be placed outside, thereby improving component mounting performance. I can. Specifically, it is possible to select the transmission unit (TX) of two different communication systems by using a single pole double throw (SPDT) type switch inside the RFIC corresponding to the control unit 250.

In addition, an electronic device capable of operating in a plurality of wireless communication systems according to the present invention may further include a duplexer 231, a filter 232, and a switch 233.

The duplexer 231 is configured to separate signals in the transmission band and the reception band from each other. In this case, the signal of the transmission band transmitted through the first and

second power amplifiers

210 and 220 is applied to the antennas ANT1 and ANT4 through the first output port of the duplexer 231. On the other hand, signals in the reception band received through the antennas ANT1 and ANT4 are received by the

low noise amplifiers

310 and 340 through the second output port of the duplexer 231.

The filter 232 may be configured to pass a signal in a transmission band or a reception band and block signals in the remaining bands. In this case, the filter 232 may include a transmission filter connected to the first output port of the duplexer 231 and a reception filter connected to the second output port of the duplexer 231. Alternatively, the filter 232 may be configured to pass only the signal of the transmission band or only the signal of the reception band according to the control signal.

The switch 233 is configured to transmit only either a transmission signal or a reception signal. In an embodiment of the present invention, the switch 233 may be configured in the form of a single pole double throw (SPDT) so as to separate a transmission signal and a reception signal in a time division multiplexing (TDD) scheme. In this case, the transmission signal and the reception signal are signals of the same frequency band, and accordingly, the duplexer 231 may be implemented in the form of a circulator.

Meanwhile, in another embodiment of the present invention, the switch 233 is applicable to a frequency division multiplexing (FDD) scheme. In this case, the switch 233 may be configured in the form of a Double Pole Double Throw (DPDT) so as to connect or block a transmission signal and a reception signal, respectively. On the other hand, since the transmission signal and the reception signal can be separated by the duplexer 231, the switch 233 is not necessarily required.

Meanwhile, the electronic device according to the present invention may further include a modem 400 corresponding to a control unit. In this case, the RFIC 250 and the modem 400 may be referred to as a first control unit (or a first processor) and a second control unit (a second processor), respectively. Meanwhile, the RFIC 250 and the modem 400 may be implemented as physically separate circuits. Alternatively, the RFIC 250 and the modem 400 may be physically divided into one circuit logically or functionally.

The modem 400 may perform control and signal processing for transmission and reception of signals through different communication systems through the RFIC 250. The modem 400 may be obtained through control information received from a 4G base station and/or a 5G base station. Here, the control information may be received through a physical downlink control channel (PDCCH), but is not limited thereto.

The modem 400 may control the RFIC 250 to transmit and/or receive signals through the first communication system and/or the second communication system at a specific time and frequency resource. Accordingly, the RFIC 250 may control transmission circuits including the first and

second power amplifiers

210 and 220 to transmit a 4G signal or a 5G signal in a specific time period. Further, the RFIC 250 may control receiving circuits including the first to fourth low noise amplifiers 310 to 340 to receive a 4G signal or a 5G signal in a specific time period.

On the other hand, the detailed operation and function of the electronic device having a transparent antenna according to the present invention equipped with a multiple transmission/reception system as shown in FIG. 2 will be described below.

In the 5G communication system according to the present invention, the 5G frequency band may be a higher frequency band than the Sub6 band. For example, the 5G frequency band may be a millimeter wave band, but is not limited thereto and may be changed according to an application.

3 shows an example of a configuration in which a plurality of antennas of an electronic device according to the present invention can be disposed. Referring to FIG. 3, a plurality of antennas 1110a to 1110d may be disposed on the front surface of the electronic device 100. Here, the plurality of antennas 1110a to 1110d disposed on the front surface of the electronic device 100 may be implemented as a transparent antenna embedded in the display.

In addition, a plurality of antennas 1110S1 and 1110S2 may be disposed on the side of the electronic device 100. Also, antennas 1150B may be disposed on the front surface of the electronic device 100.

Meanwhile, referring to FIG. 2, a plurality of antennas ANT 1 to ANT 4 may be disposed on the front surface of the electronic device 100. Here, each of the plurality of antennas ANT 1 to ANT may be configured as an array antenna to perform beamforming in a millimeter wave band. Each of a plurality of antennas (ANT 1 to ANT) composed of a single antenna and/or a phased array antenna for use of a wireless circuit such as the transceiver circuit 250 is mounted on the electronic device 100 Can be.

Meanwhile, referring to FIGS. 2 and 3, at least one signal may be transmitted or received through a plurality of antennas 1110a to 1110d corresponding to the plurality of antennas ANT 1 to ANT 4. In this regard, each of the plurality of antennas 1110a to 1110d may be configured as an array antenna. The electronic device can communicate with the base station through any one of the plurality of antennas 1110a to 1110d. Alternatively, the electronic device may perform multiple input/output (MIMO) communication with a base station through two or more of the plurality of antennas 1110a to 1110d.

Meanwhile, according to the present invention, at least one signal may be transmitted or received through a plurality of antennas 1110S1 and 1110S2 on the side of the electronic device 100. Unlike illustrated, at least one signal may be transmitted or received through the plurality of antennas 1110S1 to 1110S4 on the front surface of the electronic device 100. In this regard, each of the plurality of antennas 1110S1 to 1110S4 may be configured as an array antenna. The electronic device can communicate with the base station through any one of the plurality of antennas 1110S1 to 1110S4. Alternatively, the electronic device may perform multiple input/output (MIMO) communication with the base station through two or more of the plurality of antennas 1110S1 to 1110S4.

Meanwhile, the present invention may transmit or receive at least one signal through a plurality of antennas 1110a to 1110d, 1150B, 1110S1 to 1110S4 on the front and/or side of the electronic device 100. In this regard, each of the plurality of antennas 1110a to 1110d, 1150B, and 1110S1 to 1110S4 may be configured as an array antenna. The electronic device can communicate with the base station through any one of the plurality of antennas 1110a to 1110d, 1150B, and 1110S1 to 1110S4. Alternatively, the electronic device may perform multiple input/output (MIMO) communication with the base station through two or more of the plurality of antennas 1110a to 1110d, 1150B, and 1110S1 to 1110S4.

Hereinafter, an electronic device having a transparent antenna incorporated in a display according to the present invention will be described. In this regard, FIG. 4A shows an electronic device including a transparent antenna and a transmission line incorporated in a display according to the present invention. In addition, FIG. 4B shows the structure of a display in which a transparent antenna is incorporated according to the present invention.

Referring to FIG. 4A, the electronic device includes an antenna 1110 built into the display 151 and a transmission line 1120 configured to feed the antenna 1110. Here, the display 151 can be configured as an OLED or LCD. Meanwhile, referring to FIGS. 3 and 4A, the electronic device includes a plurality of antennas 1110a to 1110d built into the display 151 and a transmission line 1120 configured to feed the antennas 1110a to 1110d. . That is, the electronic device includes a plurality of antennas ANT 1 to ANT 4 embedded in the display 151 and a transmission line 1120 configured to feed the antennas ANT 1 to ANT 4. Here, each of the plurality of antennas ANT 1 to ANT 4 may be implemented as an array antenna and configured to perform beamforming. Meanwhile, array antennas of each of the plurality of antennas 1110a to 1110d may be disposed to be spaced apart from each other to operate to perform multiple input/output (MIMO). In this regard, spatial beam forming may be performed so that the beam directions by each of the plurality of antennas ANT 1 to ANT 4 are substantially orthogonal to each other.

In this regard, as shown in FIG. 4A, four antenna elements may be implemented as one array antenna. However, the present invention is not limited thereto, and may be changed to a 2x1, 4x1, or 8x1 array antenna. In addition, beamforming may be performed in a direction other than one axis, such as a horizontal direction, such as a vertical direction. To this end, it can be changed to a 2x2, 4x2, 4x4, 2x4 array antenna. Beamforming in the millimeter wave (mmWave) band is possible using such an array antenna.

Meanwhile, in an electronic device having a transparent antenna according to the present invention, the transparent antenna may operate in the Sub6 band. In this regard, the transparent antenna operating in the Sub6 band does not have to be provided in the form of an array antenna. Accordingly, in the transparent antenna operating in the Sub6 band, a single antenna may be arranged to be spaced apart from each other to operate to perform multiple input/output (MIMO).

Accordingly, the patch antenna of FIG. 4A is not disposed as an array antenna, but a single antenna-type patch antenna is disposed in the upper left, lower left, upper right, and lower right of the electronic device, and each patch antenna is multi-input/output (MIMO). ) Can be operated.

Meanwhile, a display structure in which a transparent antenna according to the present invention is embedded will be described as follows. Referring to FIG. 4B, a dielectric 1130, that is, a dielectric substrate, may be disposed on the OLED display panel and the OCA inside the display 151. Here, the dielectric 1130 in the form of a film on the top may be used as a dielectric substrate of the antenna 1110. Also, an antenna layer may be disposed on the dielectric 1130 in the form of a film. Here, the antenna layer may be implemented with silver alloy, copper, aluminum, or the like. Meanwhile, an antenna 1110 and a transmission line 1120 may be disposed in the antenna layer.

Meanwhile, the transmission line 1120 according to the present invention may be implemented as a plurality of metal mesh lines arranged in a direction in which current flows. That is, a plurality of metal mesh lines may be disposed in a direction parallel to the boundary of the transmission line 1120. In this regard, FIG. 5 shows an adaptive mesh structure and a general rectangular mesh structure according to the present invention.

In this regard, the transmission line 1120 may be formed in a CPW (Co-Planar Waveguide) line structure. That is, the transmission line 1120 may include an inner conductor region 1121, an outer conductor region 1122 and a dielectric region 1123. Meanwhile, the inner conductor region 1121 operates as a signal line, and the outer conductor region 1122 operates as a ground. Also, the dielectric region 1123 may be formed between the inner conductor region 1121 and the outer conductor region 1122.

Meanwhile, in the transmission line in the form of a metal mesh line in FIG. 5A, metal mesh lines are formed at equal intervals in a direction in which current flows (y-axis direction) and a direction orthogonal thereto (x-axis direction). On the other hand, the transmission line 1120 in the form of a metal mesh line of FIG. 5B according to the present invention may be formed only in a direction in which current flows (y-axis direction). That is, in the transmission line 1120 in the form of a metal mesh line of FIG. 5(b) according to the present invention, a metal mesh line is not formed in a direction (x-axis direction) orthogonal to a current flowing direction (y-axis direction). I can. In this way, a mesh structure based on a method of determining a shape of a metal mesh in accordance with a current flowing direction may be referred to as an adaptive mesh (AM) structure.

Meanwhile, in the metal mesh line shape of FIG. 5(b) according to the present invention, that is, in the adaptive mesh structure, the spacing between meshes in the y-axis direction may be formed more finely than the mesh spacing in the y-axis direction of FIG. 5(a). have. For example, in the structure of FIG. 5A, it may be assumed that N*N metal mesh lines, that is, 2N metal mesh lines, are formed within a certain area. Correspondingly, in the adaptive mesh structure of FIG. 5B, 2N metal mesh lines may be formed only in the y-axis direction, which is the current direction, within the same predetermined area.

On the other hand, with respect to the metal mesh line width, the loss at the operating frequency decreases as the line width increases. In this regard, unwanted radiation by the mesh line increases in a high frequency band such as a millimeter wave. However, if the line width is increased, the unnecessary radiation phenomenon can be reduced, and loss can be reduced. However, when the line width of the mesh line is increased, there is a problem in that the number of mesh lines decreases when implementing a line having a high impedance, that is, a line having a narrow line width. Accordingly, when the line width is increased, unwanted radiation loss is reduced, but conductivity is decreased due to a decrease in the number of mesh lines. On the other hand, if the line width is decreased, the conductivity increases due to an increase in the number of mesh lines, but the loss increases due to unnecessary radiation according to the narrow line width.

Accordingly, in the present invention, a mesh line having a first line width and a mesh line having a second line width wider than the first line width may be implemented within the transmission line 1120. Accordingly, the present invention proposes a structure including a mesh line having a wide line width and a mesh line having a narrow line width within the transmission line 1120. In this regard, a region having a high current density within the transmission line 1120, for example, may be implemented as a mesh line having a wide second line width near the boundary. On the other hand, the remaining area of the transmission line 1120, particularly near the center, may be implemented as a mesh line having a narrow first line width.

Meanwhile, the mesh line structure having different line widths may be applied to the outer conductor area 1123 corresponding to the ground in addition to the inner conductor area 1121 of the transmission line of the CPW structure.

In the transmission line 1120 of the AM structure of FIG. 5 described above, the metal mesh line may be implemented to include a horizontal line of a certain shape in addition to a vertical line. In this regard, FIG. 5B shows a transmission line of an AM structure including horizontal lines of a segment structure according to an embodiment of the present invention. 5B(a) shows a transmission line 1121-1 including horizontal lines 1120H1 intersecting a plurality of vertical lines 1120V according to an embodiment of the present invention. On the other hand, FIG. 5B(b) shows a transmission line 1120-2 including horizontal lines 1120H2 arranged between a plurality of vertical lines 1120V according to another embodiment of the present invention.

Accordingly, the transmission lines 1120-1 and 1120-2 of the AM structure may be configured to include a plurality of vertical lines 1120V and a plurality of segmented horizontal lines 1120H1 and 1120H2. In this case, a plurality of segmented horizontal lines 1120H1 may be disposed in a form intersecting a plurality of vertical lines 1120V as shown in FIG. 5B(a). Alternatively, a plurality of segmented horizontal lines 1120H2 may be disposed between a plurality of vertical lines 1120V without intersecting the plurality of vertical lines 1120V as shown in FIG. 5B(b).

In this regard, the transmission line 1120 of the AM structure of FIG. 5A increases in conductivity as the number of mesh lines increases or the mesh line width increases. Accordingly, the transmission line 1120 of the AM structure has an advantage of reducing loss compared to a general metal mesh line. However, as only the metal mesh line in the vertical axis direction is provided, there is room for a visibility issue.

On the other hand, the transmission lines 1120-1 and 1120-1 of the AM structure of FIG. 5B adopt the AM structure, thereby reducing loss and improving visibility. Accordingly, in order to implement the transmission line 1120 of the AM structure of FIG. 5A invisible, the transmission lines 1120-1 and 1120-1 of the AM structure as shown in FIGS. 5B(a) and 5B(b) may be applied. . That is, it is possible to leave a small branch in segmented structure while maintaining the basic shape of the AM structure. Accordingly, the transmission lines 1120-1 and 1120-1 of the AM structure of FIG. 5B have excellent electrical characteristics and can maintain visibility such as the square mesh shape of FIG. 5A(a).

Specifically, in the transmission line 1120-1 of FIG. 5B(a), the horizontal lines 1120H1 may be disposed to be spaced apart from each other by a predetermined interval in the horizontal axis direction. Also, the horizontal lines 1120H1 may be disposed to be spaced apart from each other by a predetermined interval in the vertical axis direction.

On the other hand, in the transmission line 1120-2 of FIG. 5B(b), the horizontal lines 1120H2 may be disposed to be spaced apart from each other by a predetermined interval in the horizontal axis direction. In this regard, a vertical line 1120V is disposed between the horizontal lines 1120H2 spaced apart from each other by a predetermined distance in the horizontal axis direction. Further, the horizontal lines 1120H2 may be disposed to be spaced apart from each other by a predetermined interval in the vertical axis direction.

Meanwhile, FIG. 6 shows a case in which an orthogonal line is added and a non-regular mesh structure is applied in the adaptive mesh structure according to the present invention. Referring to FIG. 6(a), an orthogonal line (OL) is added at predetermined intervals in a transmission line having an adaptive mesh (AM) structure. Meanwhile, referring to FIG. 6(b), an irregular mesh (IM) structure is applied in a transmission line having an adaptive mesh (AM) structure in which the spacing between metal meshes is not uniform. Accordingly, the transmission lines according to FIGS. 6A and 6B may be referred to as an AM + OL structure and an AM + IM structure, respectively.

Meanwhile, FIG. 7 shows a case in which an orthogonal line is added and a non-regular mesh structure is applied in the adaptive mesh structure according to the present invention. Referring to FIG. 7, an orthogonal line OL is added at predetermined intervals in a transmission line having an adaptive mesh (AM) structure, and a non-regular (IM) structure in which the interval between meshes is not uniform is applied.

Meanwhile, in the transmission lines of FIGS. 6 and 7, the shape of the metal mesh line inside the transmission line may be in the shape of a rectangular mesh line having different horizontal and vertical intervals. However, the present invention is not limited thereto, and may be implemented in an AM + IM structure without an orthogonal line (OL) as shown in FIG. 6B. Also, depending on the application, it may be implemented in the form of a mesh grid having a diamond shape.

The transmission line 1120 of the AM + OL structure of FIG. 6A includes a plurality of metal mesh lines and an orthogonal line OL, that is, an orthogonal metal mesh line. In this regard, the plurality of metal mesh lines are arranged in a direction in which current flows, that is, a y-axis direction. That is, the plurality of metal mesh lines may be configured to be arranged in the y-axis direction parallel to the boundary line of the transmission line 1120.

On the other hand, the orthogonal lines OL are disposed in a direction orthogonal to the direction in which current flows, that is, in the x-axis direction, and may be spaced apart from each other at predetermined intervals. That is, the orthogonal line OL may be configured to be disposed in a direction orthogonal to the boundary line of the transmission line 1120. Here, the interval between the orthogonal lines OL, that is, the orthogonal metal mesh lines, may correspond to a quarter wavelength (l/4) or a half wavelength (l/2) of the operating frequency.

Accordingly, the spacing between the rectangular mesh lines of the AM structure may be arranged at a finer spacing than the square mesh of FIG. 5(a) in the direction in which the current flows, that is, the y-axis direction. On the other hand, the rectangular mesh lines of the OL structure may be disposed at a wider interval than the square mesh in a direction orthogonal to the current direction, that is, in the x-axis direction.

Accordingly, referring to FIGS. 4 and 5, an electronic device having a transparent antenna according to the present invention may be configured to include an antenna 1110 and a transmission line 1120. Here, the antenna 1110 is built into the display 151 and is configured to operate, that is, radiate a signal through the display. Further, the transmission line 1120 is configured to feed the antenna 1110.

Specifically, the transmission line 1120 includes a plurality of metal mesh lines arranged parallel to the boundary line. Further, the transmission line 1120 may further include an orthogonal metal mesh line disposed in a direction orthogonal to the boundary line and spaced apart from each other at a predetermined interval.

Meanwhile, the transmission line 1120 of the AM + IM structure of FIG. 6B may be formed as a plurality of metal mesh lines in a direction in which current flows, that is, in the y-axis direction, without an orthogonal line OL. . In this regard, the spacing between the rectangular mesh lines may be arranged at a finer spacing than the square mesh of FIG. 5A in the direction in which the current flows.

On the other hand, in the vicinity of the boundary B1 of the transmission line 1120 of the IM structure, the spacing between the metal mesh lines may be arranged at a finer spacing. On the other hand, the closer to the inner center of the transmission line 1120 of the IM structure, the wider the spacing between the metal mesh lines may be. Accordingly, as spaced outward from the boundary of the transmission line 1120, the distance between the metal mesh lines may be arranged at a wider distance.

Meanwhile, FIG. 8 shows a CPW structure implemented with a metal mesh line on a substrate in a transmission line structure embedded in a display according to the present invention. 9 is an enlarged view of a signal line around a dielectric region and a metal mesh at the ground in the adaptive mesh structure according to the present invention.

In this regard, the characteristics of the metal mesh line implemented on the substrate in the transmission line structure embedded in the display according to the present invention are as follows.

1) On a transparent substrate such as PET or Glass, a non-transparent conductor such as Au, Ag, and Cu is plated in the same way as etching. In this regard, transmission lines and antennas uniformly configured in the display by opaque conductors can be recognized as transparent antennas.

2) Create a mesh according to the direction of the current by referring to the current distribution identified in the solid form without mesh.

3) In the case of a transmission line, the direction of current occurs in one direction, so a straight, long rectangular mesh is created.

4) Arrange the mesh spacing more precisely in the area where the current is strong, referring to the current intensity found in the solid form without mesh.

5) In consideration of the effect of the dielectric constant of the substrate, an orthogonal line is added with a minimum length of 1/4 of the effective wavelength.

Meanwhile, in an electronic device having a transparent antenna according to the present invention, transparency between an antenna and a transmission line is important. In this regard, as the thickness and line width of the metal mesh line decrease, the transparency of the antenna and the transmission line increases. However, as the thickness and line width of the metal mesh line decrease, there is a problem that the conductivity of the antenna and the transmission line decreases. Accordingly, as the thickness and line width of the metal mesh line decrease, there is a problem that the loss due to the antenna and the transmission line increases. Accordingly, the present invention proposes a structure capable of reducing loss due to antennas and transmission lines while maintaining transparency without increasing the thickness and line width of the metal mesh line. In this regard, the metal mesh line structure of the antenna and the transmission line built into the display according to the present invention may be configured as an AM, AM + OL, AM + IL or AM + OL + IM structure as described above. That is, the present invention improves efficiency through a low loss structure by changing the mesh shape of the transmission line while maintaining the transparency of the metal mesh line.

In summary, the characteristics of the AM structure, the OL structure, and the IM structure, which are basic structures of a metal mesh line of an antenna and a transmission line embedded in a display according to the present invention, are as follows.

1) Adaptive Mesh (AM)

-Mesh can be adjusted in the same direction as the current distribution diagram.

-Meshes in a direction different from the current flow can be removed and meshes can be added in the same direction as the number of removed meshes. Accordingly, it is possible to improve transmission loss while maintaining the same transparency.

2) Irregular Mesh (IM)

-It is possible to distribute the mesh density in the regions with strong and small current distribution maps asymmetrically.

-Transmission loss can be improved by increasing the mesh in the area where the current intensity is strong.

3) Orthogonal Mesh Line (OL)

-In case the mesh is broken, the reliability of the mesh line can be increased by adding a mesh that is orthogonal to the current direction.

Orthogonal Mesh Lines can be arranged at intervals of Effective Lambda/4 of the operating frequency. In this regard, if too many OLs are placed, the transparency may be degraded.

-Stable current distribution is formed by the OL structure, and transmission loss can be improved.

Meanwhile, in the AM, AM + OL, AM + IL, and AM + OL + IL structures according to the present invention, the transparency may be set to substantially the same value. In this regard, in the AM, AM + OL, AM + IL and AM + OL + IL structures according to the invention, the transparency due to the metal mesh line may be 95%. However, it is not limited thereto and can be changed according to the application.

Referring to FIG. 8, the transmission line 1120 may be formed in a CPW (Co-Planar Waveguide) line structure. That is, the transmission line 1120 may include a strip line 1121 corresponding to an inner conductor region, a ground 1122 corresponding to an outer conductor region, and a dielectric region 1123. Meanwhile, the strip line 1121 operates as a signal line, and the ground 1122 is formed on the same plane as the strip line 1121 to form a CPW line structure. Here, the meaning of “strip line” is because an outer conductor region corresponding to the ground is disposed on the same plane as the inner conductor region corresponding to the signal line, so that a signal transmitted through the signal line is guided by the ground. Accordingly, there is an advantage that loss of a signal transmitted through the strip line 1121 is reduced compared to a general microstrip line.

Meanwhile, the ground 1122 may be formed on the glass-shaped dielectric 1130 having a predetermined dielectric constant. Also, referring to FIG. 4B, the ground 1122 may be formed on the dielectric 1130 in the form of a film having a predetermined dielectric constant. Here, the thickness of the glass-shaped dielectric 1130 may be 1 mm. However, it is not limited thereto and can be changed according to the application. In this regard, when the thickness of the dielectric 1130 corresponding to the substrate decreases, the conductivity of the strip line 1121 in the form of a metal mesh line may decrease. In addition, the unnecessary radiation of the strip line 1121 in the form of a metal mesh line increases, so that a conductive loss may increase. Accordingly, in order to reduce the conduction loss of the strip line 1121 in the form of a metal mesh line, the thickness of the dielectric 1130 may be set to d1 or more.

On the other hand, dielectric loss may increase as the thickness of the dielectric 1130 increases in a high frequency band such as a millimeter wave band. Therefore, in order to reduce dielectric loss in the millimeter wave band, the thickness of the dielectric 1130 may be set to d2 or less. Accordingly, the thickness d of the dielectric 1130 can be configured in a range of d1 or more and d2 or less.

Here, the ground 1122 is electrically connected to the ground on the rear surface of the film-type dielectric 1130 or the glass-type dielectric 1130b. To this end, the metal mesh line in the ground 1122 region may be connected via via to the ground on the rear surface. On the other hand, when the metal mesh line in the ground 1122 region is connected to the ground on the rear surface by a via having a predetermined volume, the transparency may be slightly lowered. Accordingly, the metal mesh line in the ground 1122 region may be connected to the rear ground through a metal line formed on the side surfaces of the

dielectrics

1130 and 1130b. Alternatively, the metal mesh line in the ground 1122 region may be connected to the rear ground through a metal mesh line formed on the side surfaces of the

dielectrics

1130 and 1130b.

Referring to FIG. 9, a transmission line composed of metal mesh lines may be implemented in an adaptive mesh structure disposed in one direction. In this case, an orthogonal line (OL) may be disposed at a predetermined interval, for example, a quarter-wavelength interval on the mesh line arranged in one direction. Meanwhile, in a transmission line having a CPW line structure, a dielectric region between a strip line and a ground may be formed as a gap.

In this regard, mesh lines adjacent to the dielectric region formed with a gap may be disposed to have a narrower gap than other mesh lines. For example, a mesh line adjacent to a dielectric region formed with a gap is formed of 70 μm, and as the distance increases, the mutual gap may decrease. Specifically, the mesh line adjacent to the dielectric region is formed to be 70 μm, and as the distance increases, the mutual spacing between the metal mesh lines may increase by 100 μm or 120 μm.

Meanwhile, in the transmission line structure according to the present invention, the loss of the conductor may vary according to the thickness and line width of the metal mesh line. In this regard, FIG. 10A shows an insertion loss (S21) value according to a thickness change of a metal mesh line in relation to the present invention. Meanwhile, FIG. 10B shows an insertion loss (S21) value according to a line width change of a metal mesh line in relation to the present invention.

Meanwhile, the insertion loss (S21) value of FIGS. 10A and 10B corresponds to an insertion loss value for a metal mesh line in a rhombus shape embedded in the display. In this regard, the insertion loss value can be improved according to the combination of the rectangular metal mesh line, that is, the AM, IM and OL mesh structures according to the present invention. Detailed results for this will be reviewed in more detail below. However, the tendency of insertion loss according to the thickness and line width of the metal mesh line shows a constant tendency regardless of the mesh structure. Accordingly, the present invention can simulate the insertion loss (S21) value for the rhombus-shaped metal mesh line in order to determine the range of the thickness and line width that can be implemented in the metal mesh line.

Referring to FIG. 10A, lines marked with squares, triangles and circles represent insertion loss when the thickness of the metal mesh line is 0.7mm, 1.0mmm, and 2.0mm, respectively. Therefore, it can be seen that the insertion loss value increases as the thickness of the metal mesh line increases from 0.7mm to 2.0mm.

Meanwhile, referring to FIG. 10B, lines marked with triangles and squares represent insertion loss when the line widths of the metal mesh lines are 3.0 mm and 5.0 mm, respectively. Accordingly, it can be seen that the insertion loss value decreases as the line width of the metal mesh line increases from 3.0 mm to 5.0 mm. Accordingly, as the thickness of the metal mesh line decreases within a possible range, electrical characteristics are improved. On the other hand, as the line width of the metal mesh line increases, the electrical characteristics improve. However, if the thickness of the metal mesh line is excessively reduced, implementation may be difficult or there may be problems such as cutting the mesh line. In addition, if the line width of the metal mesh line is excessively increased, the number of metal mesh lines disposed within the line width of the strip line decreases, thereby reducing the conductivity.

Accordingly, in the present invention, there is an advantage that a transmission line having a low insertion loss value can be implemented through an AM, IM, OL mesh structure without reducing the thickness of the metal mesh line or increasing the line width. Accordingly, in the present invention, it is possible to implement a transmission line having superior insertion loss characteristics compared to FIGS. 10A and 10B while maintaining the thickness of the metal mesh line above a certain level and maintaining the line width below a certain level. In this regard, FIG. 11 is a comparison of insertion loss results in various transmission line structures, square mesh structures, and ideal CPW structures according to the present invention. 10A, 10B, and 11B, it can be seen that the metal mesh lines of the AM, IM, and OL structures according to the present invention have better insertion loss characteristics than the metal mesh lines of a rhombus shape. A detailed comparison thereof will be described in FIG. 11.

For example, in the present invention, a transmission line may be implemented with a metal mesh line having a thickness of 1.0 mm and a line width of 3.0 mm. However, the present invention is not limited thereto, and the thickness and line width may be changed according to the operating frequency band and whether the mesh line is implemented as a transmission line or an antenna. In this regard, a transmission line having a narrow line width needs to slightly reduce the line width in order to maintain the convenience and conductivity of implementation. On the other hand, since the antenna has a wider width than the transmission line, characteristic optimization can slightly increase the line width of the mesh line. For example, the line width of the transmission line 1120 according to the present invention may be set to w1, and may be set to w2, which is wider than w1 of the antenna 1110. Here, the line widths w1 and w2 may be 3.0mm and 5.0mm, respectively. Also, in the vicinity of the boundary where the current distribution is strong even within the transmission line 1120, the line width may be set to a value wider than w1.

Meanwhile, FIG. 11 is a comparison of insertion loss results in various transmission line structures and square mesh structures and ideal CPW structures according to the present invention. In addition, Table 1 compares the results of insertion loss in the various transmission line structures of FIG. 11 and the square mesh structure and the ideal CPW structure.

Transmission line structureTransmission line structure	Insertion lossInsertion loss	Diamond mesh 대비 성능 향상Performance improvement compared to diamond mesh
SolidSolid	0.08 dB/mm0.08 dB/mm
AM + OL + IMAM + OL + IM	0.24 dB/mm0.24 dB/mm	40% 향상40% improvement
AM + OLAM + OL	0.26 dB/mm0.26 dB/mm	35% 향상35% improvement
AMAM	0.28 dB/mm0.28 dB/mm	30% 향상30% improvement
Square meshSquare mesh	0.33 dB/mm0.33 dB/mm	17.5% 향상17.5% improvement
Diamond meshDiamond mesh	0.4 dB/mm0.4 dB/mm

In this regard, Solid represents an ideal CPW line with a metal mesh structure completely filled with metal. Meanwhile, the square mesh structure is a mesh structure having the same horizontal and vertical intervals as shown in FIG. 5(a). On the other hand, various CPW transmission line structures according to the present invention are AM, AM + OL and AM + OL + IM structures, respectively.

In this regard, the insertion loss result of FIG. 11 is an insertion loss result for a transmission line length of 5 mm. On the other hand, the insertion loss results in Table 1 are the results for a transmission line length of 1 mm. In FIG. 11, the result of insertion loss for the metal mesh line in the shape of a rhombus is not shown. In FIG. 11, dB(S(1,2)) means a 2-port transmission coefficient (ie, insertion loss) for a transmission line length of 5 mm. Here, dB(S(1,2)) is an insertion loss for an ideal CPW line with a metal mesh structure completely filled with metal, and has a value of 0.38 dB at 28 GHz. Meanwhile, dB(S(1,2))_1 to dB(S(1,2))_4 denote insertion loss for AM + OL + IM structure, AM + OL structure, AM structure and square mesh structure, respectively. Accordingly, in the AM + OL + IM structure, the AM + OL structure, and the AM structure according to the present invention, the insertion loss has values of 1.21 dB, 1.29 dB and 1.38 dB at 28 GHz. On the other hand, the square mesh structure has a value of 1.65dB at 28GHz.

Meanwhile, referring to Table 1, the insertion loss for a rhombus-shaped metal mesh line is 0.4dB/mm. Therefore, referring to Table 1, 1) an ideal CPW transmission structure in a solid form instead of a metal mesh structure has the lowest transmission loss as 0.08 dB/mm. 2) However, the present invention relates to a transparent antenna having a metal mesh structure built into the display, and the solid form is not a target for comparison. On the other hand, the square mesh structure has a slightly smaller transmission loss than the diamond mesh structure. The insertion loss of the square mesh structure is 0.33dB/mm, which can improve performance by about 17.5% compared to 0.4 dB/mm of the diamond mesh structure. 3) Meanwhile, the insertion loss characteristics were all improved in the AM, AM + OL and AM + OL + IM structures according to the present invention. In particular, the insertion loss of the AM + OL + IM structure is 0.24 dB/mm, which can improve performance by about 40% compared to the diamond mesh structure.

Meanwhile, an operation mechanism according to an optimized metal mesh arrangement according to a current distribution in various transmission line structures according to the present invention is as follows.

1) The current distribution diagram generated in an ideal solid-type transmission line has unidirectionality. Therefore, it has a tendency to coincide with the current flow in the rectangular mesh structure of Fig. 5(b) in which the mesh is formed in one direction.

2) In the case of a square/rhombic mesh structure, considering the current distribution, it has a current component in a direction orthogonal to (or crossing) the current direction of the transmission line. Therefore, the current component in the orthogonal (or crossing) direction does not help the current flow in the transmission line. In addition, current components in a direction orthogonal (or crossing) on a transmission line may cause additional losses.

3) Therefore, in the present invention, transparency can be improved through an AM structure that removes a mesh that is orthogonal to the current flow on the transmission line. In addition, it is possible to increase the transmission efficiency of the transmission line by creating an additional mesh in the current direction as much as the number of meshes removed.

4) Looking at the current distribution diagram of the AM + OL + IM mesh structure, it can be seen that it occurs similarly to the direction of the current distribution diagram of the above solid CPW line structure. Therefore, the mesh density of the boundary portion on the line with strong current intensity is increased. Accordingly, there is little reduction in efficiency because it allows more current to flow on the transmission line.

5) In the case of OL, compared to a solid CPW line, it is possible to form a current distribution diagram in an orthogonal direction that occurs substantially at 1/2 or 1/4 intervals of the effective wavelength. Accordingly, a current component reflected by a mismatch occurring on a transmission line can be removed, thereby increasing transmission loss efficiency.

On the other hand, the metal mesh structure according to the present invention can be applied to a rhombus-shaped mesh structure in addition to the rectangular mesh structure. In this regard, FIG. 12 shows the adaptive mesh (AM) structure applied to the rhombus-shaped mesh structure according to the present invention. Meanwhile, FIG. 13 shows an orthogonal mesh (OM) structure applied to a rhombus-shaped mesh structure according to the present invention. On the other hand, Figure 14 is a non-regular mesh (IM) structure is applied to the CPW structure having a rhombus-shaped mesh structure according to the present invention.

In this regard, when the adaptive mesh (AM) structure is applied as shown in FIG. 12, lines may be arranged in the same direction as the current direction of the transmission line in the rhombus-shaped mesh structure. On the other hand, when the orthogonal mesh (OM) structure is applied as shown in FIG. 13, orthogonal lines orthogonal to the current traveling direction of the CPW line are arranged in a rhombus-shaped mesh structure at regular intervals at predetermined intervals (e.g., half wavelength, quarter wavelength) Can be. In addition, when the non-regular mesh (IM) structure as shown in FIG. 14 is applied, the mesh density in a region adjacent to the ground in the power supply line of the rhombus-shaped mesh structure can be increased.

12 to 14, the shape of the metal mesh line inside the transmission line according to the present invention may be a rhombus mesh line. Referring to FIG. 14, the spacing of the rhombic mesh lines in the vicinity of the boundary B1 of the transmission line 1120 is formed in more detail than the spacing of the rhombic mesh lines in the vicinity of the center C1 of the transmission line 1120. Specifically, the spacing of the rhombus mesh line near the boundary of the strip line 1121 and the ground 1122 (B1, B2) is formed more finely than the spacing of the rhombic mesh line near the center of the strip line 1121 (C1). do. Accordingly, by arranging the mesh line more precisely on the transmission line 1120 where the current distribution is concentrated, it is possible to implement a low-loss transmission line.

Meanwhile, referring to FIG. 13, an orthogonal mesh OM, that is, an orthogonal metal mesh line may be spaced apart at predetermined intervals in a direction orthogonal to the boundary of the transmission line 1120. In addition, referring to FIG. 12, the transmission line 1120 may further include at least one second metal mesh line L2 in a direction parallel to the boundary of the transmission line. Accordingly, the transmission line 1120 may include a rhombic metal mesh line and a second metal mesh line L2. Accordingly, by forming at least one second metal mesh line L2 parallel to the boundary of the transmission line to coincide with the current direction, it is possible to implement a low-loss transmission line.

Therefore, even when the AM, AM + OL and AM + OL + IM structures according to the present invention are applied to a rhombus-shaped metal mesh line, the transmission line 1120 is a second metal mesh line L2 and/or an orthogonal mesh. (OM) may be further provided. Accordingly, the AM, AM + OL and AM + OL + IM structures for a low loss transmission line according to the present invention can be applied to a rhombus mesh structure in addition to a rectangular mesh structure.

Meanwhile, the low loss metal mesh line according to the present invention can be applied to the antenna 1110 in addition to the transmission line 1120. In this regard, FIG. 15 shows a transmission line and an antenna to which a metal mesh structure according to the present invention is applied. Referring to FIG. 15, the antenna 1110 to which the low-loss metal mesh structure according to the present invention is applied is built in the display 151 and can be configured to radiate a signal through the display. Meanwhile, the antenna 1100 may be configured to include a plurality of metal mesh lines ML1 and an orthogonal metal mesh line OL1.

Specifically, the plurality of metal mesh lines ML1 may be disposed in a direction in which current flows. In this regard, the direction in which the current flows may be the same as the direction in which the current flows in the transmission line 1120. Meanwhile, the orthogonal metal mesh lines OL1 are disposed in a direction orthogonal to a direction in which current flows, and may be spaced apart from each other at a predetermined interval. In this regard, the spacing between the orthogonal metal mesh lines OL1 may be configured as four half wavelengths or half wavelengths corresponding to the operating frequency. For example, when the orthogonal metal mesh line OL1 is configured with a quarter-wavelength interval, one orthogonal metal mesh line OL1 may be disposed inside the antenna 1110. Meanwhile, the shape of the metal mesh line inside the antenna may be implemented as a rhombus mesh line as shown in FIGS. 12 to 14 in addition to the rectangular mesh line.

Meanwhile, AM, AM + OL and AM + OL + IM structures may be applied to the antenna 1110 having a metal mesh line structure according to the present invention. As an example, the shape of the metal mesh line inside the antenna 1110 may be a rectangular mesh line shape. Meanwhile, the spacing between the rectangular mesh lines may be arranged at a finer distance than the square mesh in the direction in which the current flows. Accordingly, the metal mesh spacing in the direction in which the current flows in the antenna 1110, that is, the y-axis direction, may be disposed more precisely than the metal mesh spacing in the direction orthogonal thereto, that is, the x-axis direction. In addition, the metal mesh spacing in the orthogonal direction, that is, the x-axis direction, may be disposed at a wider spacing than the square mesh.

Meanwhile, the spacing between the metal mesh lines in the vicinity of the boundary of the antenna 1110, which is an area having a high current distribution, may be disposed at a finer spacing than the center area. Accordingly, the closer to the inner center of the antenna 1110, the wider the distance between the metal mesh lines may be. Meanwhile, a dummy metal mesh may be disposed outside the antenna 1110. Accordingly, as the distance from the boundary of the antenna 1110 to the outside, the distance between the metal mesh lines may be arranged at a wider distance.

Meanwhile, the antenna of the metal mesh structure according to the present invention may be formed as an array antenna for beamforming. In this regard, referring to FIG. 4A, a plurality of antennas 1110a to 1110d and transmission lines 1120a to 1120d configured to feed the antennas 1110a to 1110d may be provided. Here, each of the plurality of antennas 1110a to 1110d may be provided as an array antenna for beamforming.

Meanwhile, FIG. 16 shows a case in which the transparent antenna according to the present invention is applied as an array antenna. Referring to FIGS. 15 and 16, each antenna element 1110 of the array antenna may be connected through an inner conductor of a CPW line, that is, a strip line 1121 and a matching portion 1125. Meanwhile, the electronic device according to the present invention may further include a transceiver circuit 1210. The transceiver circuit 1210 may be disposed on the rear surface of the display 151 and connected to each antenna element of the array antenna, and may be configured to transmit a signal to each antenna element.

Meanwhile, referring to FIGS. 2, 4A, 15, and 16, the array antennas are first to fourth array antennas disposed in the upper left, upper right, lower left, and lower right inside the display 151 of the electronic device. (1110a to 1110d, or ANT1 to ANT4).

Here, the transceiver circuit 1210 may be configured to transmit a signal to each of the first to fourth array antennas 1110a to 1110d or ANT1 to ANT4. To this end, the transmission/reception unit circuit 1210 may be configured as one transmission/reception unit circuit to transmit signals to each of the first to fourth array antennas 1110a to 1110d or ANT1 to ANT4. Alternatively, the transceiver circuit 1210 may include first to fourth transceiver circuits to transmit signals to each of the first to fourth array antennas 1110a to 1110d or ANT1 to ANT4. In this regard, each of the first to fourth transmission/reception unit circuits may independently form beams for each of the first to fourth array antennas ANT1 to ANT4 through a phase control unit such as a phase shifter.

Meanwhile, the transceiver circuit 1210 may transmit and receive signals by selecting one of the first to fourth array antennas ANT1 to ANT4. Further, the transceiver circuit 1210 may perform multiple input/output (MIMO) by selecting two or more of the first to fourth array antennas ANT1 to ANT4. In this regard, the transmission/reception unit circuit 1210 may control the phase control unit so that the beam directions for multiple input/output (MIMO) are different.

In the above, an electronic device having an antenna having a low loss transmission line structure according to the present invention has been described. Hereinafter, an electronic device including an array antenna having a low-loss transmission line structure provided inside a display according to another aspect of the present invention will be described in more detail.

In this regard, referring to FIGS. 2 to 16, the electronic device according to the present invention may be configured to include a display 151, array antennas 1110a to 1110d, or ANT1 to ANT4, and a transmission line 1120. . Here, the array antennas 1110a to 1110d or ANT1 to ANT4 are disposed inside the display 151 and formed through a metal mesh line. Meanwhile, the transmission line 1120 may be configured to include a plurality of metal mesh lines and orthogonal metal mesh lines OL.

In this regard, the plurality of metal mesh lines may be disposed in a direction in which current flows. In addition, the orthogonal metal mesh lines OL may be disposed in a direction orthogonal to a direction in which current flows, and may be disposed to be spaced apart from each other at predetermined intervals. Here, the interval between the orthogonal metal mesh lines OL may be a quarter wavelength or a half wavelength.

Meanwhile, the shape of the metal mesh line inside the transmission line 1120 may be a rectangular mesh line shape. Here, the intervals between the rectangular mesh lines may be arranged at a finer interval than the square mesh in the direction in which the current flows. On the other hand, in a direction orthogonal to the direction in which the current flows, the orthogonal metal mesh lines OL may be disposed at wider intervals than the square mesh.

On the other hand, in the vicinity of the boundary (B1, B2) of the transmission line 1120 with a strong current distribution, the spacing between the metal mesh lines may be arranged at a finer spacing. Accordingly, the closer to the inner center C of the transmission line 1120, the wider the distance between the metal mesh lines may be. In addition, as spaced outward from the boundary of the transmission line 1120, that is, the boundary of the ground 1122, the space between the metal mesh lines may be arranged at a wider interval.

Meanwhile, the transmission line 1120 according to the present invention may be formed in a CPW (Co-Planar Waveguide) line structure. In this regard, the CPW line structure can be configured to include an inner conductor region 1121, an outer conductor region 1122 and a dielectric region 1123. Accordingly, the inner conductor region 1121 may operate as a signal line and the outer conductor region 1122 may operate as a ground. Meanwhile, a dielectric region 1123 may be formed between the inner conductor region 1121 and the outer conductor region 1122.

On the other hand, based on the current distribution, an interval between metal mesh lines may be arranged at a finer interval at the boundary of the inner conductor region 1121 than at the center of the inner conductor region 1121. In this regard, the boundary of the inner conductor region 1121 corresponds to a region adjacent to the dielectric region 1123. That is, at the boundary of the inner conductor region 1121 having a strong current distribution, the intervals between the metal mesh lines are arranged at finer intervals.

On the other hand, based on the current distribution, a spacing between metal mesh lines may be arranged at a finer interval at the inner boundary of the outer conductor region 1122 adjacent to the dielectric region 1123 than the outer boundary of the inner conductor region 1121. That is, at the boundary of the outer conductor region 1122 having a strong current distribution, the intervals between the metal mesh lines are arranged at finer intervals.

Meanwhile, the transmission line 1120 to which the AM, AM + OL, AM + IM and AM + OL + IL structures according to the present invention are applied may be applied to a rhombus mesh line structure in addition to a rectangular mesh line structure. With respect to the IM structure, the spacing of the rhombus mesh lines near the boundary of the transmission line 1120 may be formed more finely than the spacing of the rhombus mesh lines near the center of the transmission line 1120. Regarding the OL structure, the orthogonal metal mesh lines OL may be disposed to be spaced apart at predetermined intervals in a direction orthogonal to the boundary of the transmission line 1120. Meanwhile, in the transmission line 1120 having a rhombic mesh line structure, at least one second metal mesh line L2 may be further included in a direction parallel to the boundary of the transmission line 1120.

In the above, an electronic device having a transparent antenna embedded in a display according to the present invention has been described. The technical effects of an electronic device having a transparent antenna embedded in the display will be described as follows.

In connection with the above-described present invention, designing and driving a plurality of RF modules and a configuration for performing a status check on the plurality of RF modules can be implemented as computer-readable codes in a medium on which a program is recorded. The computer-readable medium includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (e.g., transmission over the Internet). In addition, the computer may include controllers 180, 1210a to 1210d, and 1250 of the terminal. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

In an electronic device,

An antenna built into the display and operating;

Includes a transmission line for feeding the antenna,

The transmission line,

A plurality of metal mesh lines arranged parallel to the boundary line of the transmission line; And

An electronic device comprising an orthogonal metal mesh line disposed in a direction orthogonal to the boundary line and spaced apart from each other at a predetermined interval.
The method of claim 1,

The shape of the metal mesh line inside the transmission line is a rectangular mesh line shape,

The spacing between the rectangular mesh lines is,

Arranged at finer intervals than the square mesh in the current flowing direction,

The electronic device, which is arranged at a wider interval than the square mesh in the orthogonal direction.
The method of claim 1,

The spacing between the metal mesh lines in the vicinity of the boundary of the transmission line is arranged at a finer spacing,

The closer to the inner center of the transmission line, the wider the distance between the metal mesh lines is,

The electronic device according to claim 1, wherein the distance between the metal mesh lines is arranged at a wider distance as the transmission line is spaced outward from the boundary.
The method of claim 1,

The transmission line includes a plurality of vertical lines and a plurality of horizontal lines segmented,

The segmented plurality of horizontal lines are disposed in a form intersecting the plurality of vertical lines or are disposed between the plurality of vertical lines,

The electronic device, wherein the plurality of horizontal lines are spaced apart from each other by a predetermined interval in a horizontal axis direction.
The method of claim 1,

The transmission line,

An inner conductor region acting as a signal line;

An outer conductor region acting as ground; And

It is formed in a CPW (Co-Planar Waveguide) line structure including a dielectric region formed between the inner conductor region and the outer conductor region,

Based on the current distribution, a spacing between the metal mesh lines is arranged at a finer distance at the boundary of the inner conductor region adjacent to the dielectric region than the center of the inner conductor region,

Based on a current distribution, an electronic device in which a spacing between the metal mesh lines is arranged at a finer distance at an inner boundary of the outer conductor region adjacent to the dielectric region than an outer boundary of the inner conductor region.
The method of claim 1,

The shape of the metal mesh line inside the transmission line is a rhombus mesh line shape,

The electronic device, wherein the spacing of the rhombus mesh lines near the boundary of the transmission line is finer than the spacing of the rhombus mesh lines near the center of the transmission line.
The method of claim 1,

The shape of the metal mesh line inside the transmission line is a rhombus mesh line shape,

The electronic device, wherein the orthogonal metal mesh lines are spaced apart at predetermined intervals in a direction orthogonal to a boundary of the transmission line.
The method of claim 1,

The shape of the metal mesh line inside the transmission line is a rhombus mesh line shape,

The transmission line further includes at least one second metal mesh line in a direction parallel to a boundary of the transmission line.
The method of claim 1,

The electronic device, characterized in that the spacing between the orthogonal metal mesh lines corresponds to a fourth or half wavelength of an operating frequency.
The method of claim 1,

The antenna,

A plurality of metal mesh lines arranged in a direction in which current flows; And

An electronic device comprising an orthogonal metal mesh line disposed in a direction orthogonal to the direction and spaced apart from each other at a predetermined interval.
The method of claim 1,

The shape of the metal mesh line inside the antenna is a rectangular mesh line shape,

The spacing between the rectangular mesh lines is,

Arranged at finer intervals than the square mesh in the current flowing direction,

The electronic device, which is arranged at a wider interval than the square mesh in the orthogonal direction.
The method of claim 11,

The spacing between the metal mesh lines in the vicinity of the boundary of the antenna is arranged at a finer spacing,

The closer to the inner center of the antenna, the wider the spacing between the metal mesh lines is,

The electronic device, wherein the distance between the metal mesh lines is arranged at a wider distance as the distance from the boundary of the antenna to the outside.
The method of claim 10,

The antenna is formed as an array antenna for beamforming,

Each antenna element of the array antenna is connected through an inner conductor of the CPW line and a matching portion,

The electronic device further comprises a transceiver circuit disposed on the rear surface of the display, connected to each antenna element of the array antenna, and configured to transmit a signal to each of the antenna elements.
The method of claim 13,

The array antenna includes first to fourth array antennas disposed at an upper left, upper right, lower left, and lower right inside a display of the electronic device,

The electronic device further comprises first to fourth transceiver circuits configured to transmit signals to each of the first to fourth array antennas.
In an electronic device,

display;

An array antenna disposed inside the display and formed through a metal mesh line; And

Includes a transmission line for feeding the antenna,

The transmission line,

A plurality of metal mesh lines arranged in a direction in which current flows; And

An electronic device comprising an orthogonal metal mesh line disposed in a direction orthogonal to the direction and spaced apart from each other at a predetermined interval.
The method of claim 15,

The shape of the metal mesh line inside the transmission line is a rectangular mesh line shape,

The spacing between the rectangular mesh lines is,

Arranged at finer intervals than the square mesh in the current flowing direction,

The electronic device, which is arranged at a wider interval than the square mesh in the orthogonal direction.
The method of claim 16,

The spacing between the metal mesh lines in the vicinity of the boundary of the transmission line is arranged at a finer spacing,

The closer to the inner center of the transmission line, the wider the distance between the metal mesh lines is,

The electronic device according to claim 1, wherein the distance between the metal mesh lines is arranged at a wider distance as the transmission line is spaced outward from the boundary.
The method of claim 15,

The transmission line,

An inner conductor region acting as a signal line;

An outer conductor region acting as ground; And

It is formed in a CPW (Co-Planar Waveguide) line structure including a dielectric region formed between the inner conductor region and the outer conductor region,

Based on a current distribution, an interval between the metal mesh lines is arranged at a finer interval at a boundary of the inner conductor region adjacent to the dielectric region than the center of the inner conductor region.
The method of claim 18,

Based on a current distribution, an electronic device in which a spacing between the metal mesh lines is arranged at a finer distance at an inner boundary of the outer conductor region adjacent to the dielectric region than an outer boundary of the inner conductor region.
The method of claim 15,

The shape of the metal mesh line inside the transmission line is a rhombus mesh line shape,

The spacing of the rhombus mesh lines near the boundary of the transmission line is formed more finely than the spacing of the rhombus mesh lines near the center of the transmission line

The orthogonal metal mesh lines are spaced apart at predetermined intervals in a direction perpendicular to the boundary of the transmission line, and

The electronic device further comprises at least one second metal mesh line in a direction parallel to a boundary of the transmission line.