CN108596080B - Fingerprint identification assembly, display device and electronic device - Google Patents
Fingerprint identification assembly, display device and electronic device Download PDFInfo
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- CN108596080B CN108596080B CN201810364149.6A CN201810364149A CN108596080B CN 108596080 B CN108596080 B CN 108596080B CN 201810364149 A CN201810364149 A CN 201810364149A CN 108596080 B CN108596080 B CN 108596080B
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- fingerprint
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- guide panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Image Input (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a fingerprint identification component, which is arranged on a display screen, and comprises a light guide panel, at least one active light source, at least one fingerprint module and an infrared baffle plate, wherein the active light source is arranged at one side adjacent to the light guide panel, the light guide panel is covered on the display screen, a fingerprint contact surface for pressing fingerprints is arranged on the light guide panel, the infrared baffle plate is overlapped between the light guide panel and the display screen, a light hole is arranged on the infrared baffle plate, the fingerprint module is arranged between the infrared baffle plate and the display screen, the fingerprint module corresponds to the light hole on the infrared baffle plate, light emitted by the active light source is reflected by the inner part of the light guide panel and irradiates on the fingerprint contact surface pressed with fingerprints to be identified, and take place the total reflection with waiting to discern the fingerprint, the total reflection passes the light trap and incides the fingerprint module, and the fingerprint module acquires and discerns the fingerprint image according to the light of total reflection. The invention also provides a display device and an electronic device.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a fingerprint identification assembly, a display device having the fingerprint identification assembly, and an electronic device having the display device.
Background
With the rapid development of biometric identification technology, fingerprint identification technology has been widely applied to electronic devices such as smart phones and tablet computers. The existing fingerprint identification component can be mainly divided into a capacitance type fingerprint identification component, an optical type fingerprint identification component, a thermal type fingerprint identification component, an ultrasonic fingerprint identification component and the like, and the optical type fingerprint identification component becomes the most widely applied fingerprint identification component due to factors such as low manufacturing cost, high yield and the like.
The fingerprint identification module of the fingerprint identification component on the existing smart phone is usually arranged on the front face of the smart phone, so that the fingerprint identification component occupies the area of the display screen, and the screen occupation ratio of the smart phone is not improved.
Disclosure of Invention
The invention aims to provide a fingerprint identification component capable of improving the screen occupation ratio of an electronic device, a display device provided with the fingerprint identification component and the electronic device provided with the display device.
In order to solve the above technical problems, the present invention provides a fingerprint identification assembly disposed on a display screen, the fingerprint identification assembly includes a light guide panel, at least one active light source, at least one fingerprint module, and an infrared baffle, wherein the at least one active light source is disposed adjacent to one side of the light guide panel, the light guide panel is covered on the display screen, the light guide panel is provided with a fingerprint contact surface for pressing a fingerprint, the infrared baffle is stacked between the light guide panel and the display screen, the infrared baffle is provided with at least one light hole, the at least one fingerprint module is disposed between the infrared baffle and the display screen, the at least one fingerprint module corresponds to the light hole on the infrared baffle, light emitted from the at least one active light source is reflected by the interior of the light guide panel, the fingerprint identification device is characterized in that the fingerprint identification device irradiates on a fingerprint contact surface pressed with a fingerprint to be identified, the fingerprint contact surface and the fingerprint to be identified are totally reflected, totally reflected light rays penetrate through at least one light transmission hole to enter at least one fingerprint module, and at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light rays.
The invention also provides a display device, which comprises a display screen and a fingerprint identification component, wherein the fingerprint identification component comprises a light guide panel, at least one active light source, at least one fingerprint module and an infrared baffle plate, the at least one active light source is arranged at one side adjacent to the light guide panel, the light guide panel is covered on the display screen, a fingerprint contact surface for pressing fingerprints is arranged on the light guide panel, the infrared baffle plate is overlapped between the light guide panel and the display screen, at least one light transmission hole is arranged on the infrared baffle plate, at least one fingerprint module is arranged between the infrared baffle plate and the display screen, at least one fingerprint module corresponds to the light transmission hole on the infrared baffle plate, and light emitted by at least one active light source is reflected by the inside of the light guide panel, the fingerprint identification device is characterized in that the fingerprint identification device irradiates on a fingerprint contact surface pressed with a fingerprint to be identified, the fingerprint contact surface and the fingerprint to be identified are totally reflected, totally reflected light rays penetrate through at least one light transmission hole to enter at least one fingerprint module, and at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light rays.
The invention also provides an electronic device, which comprises a shell, a main board arranged in the shell and a display device, wherein the display device is arranged on the shell, the display device is electrically connected with the main board, the fingerprint identification assembly comprises a light guide panel, at least one active light source, at least one fingerprint module and an infrared baffle plate, the at least one active light source is arranged at one side edge close to the light guide panel, the light guide panel is covered on the display screen, a fingerprint contact surface for pressing fingerprints is arranged on the light guide panel, the infrared baffle plate is overlapped between the light guide panel and the display screen, at least one light transmission hole is arranged on the infrared baffle plate, at least one fingerprint module is arranged between the infrared baffle plate and the display screen, at least one fingerprint module corresponds to the light transmission hole on the infrared baffle plate, the light emitted by at least one active light source is reflected by the inside of the light guide panel, irradiates on the fingerprint contact surface pressed with the fingerprint to be identified and is totally reflected with the fingerprint to be identified, the totally reflected light passes through at least one light transmission hole and enters at least one fingerprint module, and the fingerprint module acquires and identifies a fingerprint image according to the totally reflected light.
The infrared baffle is clamped between the display screen and the light guide panel of the display device, at least one active light source is arranged at one side edge close to the light guide panel, and at least one fingerprint module corresponding to the at least one active light source is arranged between the infrared baffle and the display screen. Therefore, the fingerprint identification component does not occupy the area of the display screen, and the screen occupation ratio is favorably improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of a portion II in fig. 1.
Fig. 3 is a schematic front structural diagram of a display device according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a display device according to a third embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a display device according to a fourth embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a display device according to a fifth embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a display device according to a sixth embodiment of the present invention.
Fig. 9 is a schematic structural diagram of an electronic device according to a seventh embodiment of the invention.
Fig. 10 is a schematic structural diagram of an electronic device according to an eighth embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "thickness" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention; fig. 2 is an enlarged view of a portion II in fig. 1. The present invention provides a display device 100, which comprises a display screen 20 and a fingerprint identification module 40, wherein the fingerprint identification module 40 comprises a light guide panel 42, an infrared baffle 43, at least one active light source 44, and at least one fingerprint module 46. At least one active light source 44 is disposed adjacent to one side of the light guide panel 42, the light guide panel 42 is disposed on the display screen 20, and a side of the light guide panel 42 facing away from the display screen 20 is configured as a fingerprint contact surface 421 for pressing a fingerprint. The infrared separating baffle 43 is stacked between the light guide panel 42 and the display screen 20, at least one light transmission hole 432 is formed in the infrared separating baffle 43, at least one fingerprint module 46 corresponds to at least one active light source 44 and is arranged between the infrared separating baffle 43 and the display screen 20, at least one fingerprint module 46 corresponds to the light transmission hole 432 in the infrared separating baffle 43, light emitted by at least one active light source 44 is reflected by the inside of the light guide panel 42, irradiates the fingerprint contact surface 421 with a fingerprint to be identified and is totally reflected with the fingerprint to be identified, the totally reflected light passes through at least one light transmission hole 432 and is incident to at least one fingerprint module 46, and at least one fingerprint module 46 acquires and identifies a fingerprint image according to the totally reflected light.
The display device 100 of the present invention may be installed on any electronic device, that is, the display device 100 may be installed on an intelligent device such as a smart phone, a tablet computer, an electronic reader, a notebook computer, a vehicle-mounted device, a network television, and a wearable device. In this embodiment, the display device 100 is used in a smart phone.
The display screen 20 may be an OLED display screen or an LCD display screen, and in this embodiment, the display screen 20 is an OLED display screen.
At least one of the active light sources 44 is an infrared light source, and preferably, at least one of the active light sources 44 is a near infrared light source.
The infrared baffle 43 is sandwiched between the display screen 20 and the light guide panel 42 of the display device 100 of the present invention, at least one active light source 44 is disposed adjacent to one side of the light guide panel 42, and at least one fingerprint module 46 is disposed between the infrared baffle 43 and the display screen 20 corresponding to the at least one active light source 44. The light emitted by at least one active light source 44 is reflected by the light guide panel 42, and irradiates the fingerprint contact surface pressed with the fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the totally reflected light passes through at least one light transmission hole 432 and enters at least one fingerprint module 46, and the at least one fingerprint module 46 acquires and identifies a fingerprint image according to the totally reflected light. Therefore, the fingerprint identification component 40 does not occupy the area of the display screen 20, which is beneficial to improving the screen occupation ratio.
In this embodiment, the light guide panel 42 is used as a cover plate on the display screen 20 of the display device 100, the light guide panel 42 includes a protection layer 428 and a sensing layer 429, the sensing layer 429 is disposed on a side surface of the protection layer 428 facing away from the fingerprint contact surface 421, and the fingerprint contact surface 421 is disposed on a side surface of the protection layer 428 facing away from the sensing layer 429.
The protective layer 428 is a transparent layer, and preferably, the protective layer 428 is a tempered glass layer. The thickness of the toughened glass layer is more than 0.8mm, and preferably, the thickness of the toughened glass layer is 0.9 mm.
Referring to fig. 3, fig. 3 is a schematic front structure diagram of a display device according to a first embodiment of the invention. In this embodiment, the infrared baffle 43 is provided with a plurality of at least one light hole 432, the number of at least one fingerprint module 46 is a plurality of at least one fingerprint module, and the plurality of fingerprint modules 46 correspond to the plurality of light holes 432 one to one. At least one active light source 44 is disposed at a side of the display screen 20, and a plurality of fingerprint modules 46 are arranged in a row corresponding to the at least one active light source 44. A plurality of fingerprint module 46 inlay in the inside of display screen 20, infrared ray separates baffle 43 lid and locates on the display screen 20, a plurality of on the infrared ray separates the baffle 43 fingerprint module 46 with a plurality of light trap 432 one-to-one.
In other embodiments, the number of the at least one active light source 44 is several, several active light sources 44 are arrayed along the length direction of the side of the display screen 20, several fingerprint modules 46 are arranged in several rows, and each row of the several fingerprint modules 46 corresponds to a corresponding active light source 44. The infrared baffle 43 covers all the fingerprint modules 46, and the infrared baffle 43 is provided with one light hole 432 corresponding to each fingerprint module 46.
The infrared ray blocking plate 43 blocks only infrared rays, that is, visible rays can transmit through the infrared ray blocking plate 43, and infrared rays cannot transmit through the infrared ray blocking plate 43.
As shown in fig. 1, the display 20 is provided with a transparent area 205 corresponding to each fingerprint module 46, each transparent area 205 faces the corresponding transparent hole 432, and the area of each transparent area 205 facing the corresponding transparent hole 432 is greater than or equal to the aperture of the transparent hole 432, so that the total reflected light passing through the transparent hole 432 can pass through the transparent area 205 and be incident on the corresponding fingerprint module 46.
In this embodiment, the infrared separating board 43 is in a rectangular sheet shape, the infrared separating board 43 is flatly laid on the surface of the display screen 20 facing the light guide panel 42, and the infrared separating board 43 can cover the plurality of fingerprint modules 46.
In this embodiment, each light hole 432 is a rectangular hole, the hole width of the light hole 432 is 1.1mm to 1.4mm, and preferably, the hole width of each light hole 423 is 1.4 mm.
In other embodiments, the infrared barrier 43 may be provided with a plurality of light holes in various shapes, such as circular, oval, etc.
In other embodiments, the infrared baffle 43 may be circular, oval, or the like.
The at least one active light source 44 and the plurality of fingerprint modules 46 are located on a side of the light guide panel 42 facing away from the fingerprint contact surface 421, that is, the display screen 20, the at least one active light source 44 and the plurality of fingerprint modules 46 are located on a same side of the light guide panel 42. An inclined reflection surface 423 is disposed on the light guide panel 42 opposite to the at least one active light source 44, and light emitted from the at least one active light source 44 is reflected by the reflection surface 423 and then reflected inside the light guide panel 42. The reflection surface 423 is located at an intersection of the fingerprint contact surface 421 of the light guide panel 42 and a side surface of the light guide panel 42 adjacent to at least one of the active light sources 44, that is, the reflection surface 423 is a chamfer of the intersection of the fingerprint contact surface 421 and the side surface of the light guide panel 42 adjacent to at least one of the active light sources 44. The included angle a between the reflecting surface 423 and the fingerprint contact surface 421 is greater than 0 degrees and less than 90 degrees, and preferably, the included angle a is in a range of 30 to 60 degrees. In this embodiment, the included angle a is 45 degrees.
The surface of the reflecting surface 423 is smooth, that is, the surface roughness value of the reflecting surface 423 is small. In this embodiment, the surface roughness Ra of the reflecting surface 423 is less than 10 um.
The reflecting surface 423 is coated with a reflecting layer 426, the reflecting layer 426 can enable the reflecting surface 423 to have high reflectivity, the reflecting layer 426 can be an aluminum powder layer, a silver powder layer or an infrared reflecting pigment layer and the like,
in this embodiment, the reflecting surface 423 is coated with an aluminum powder layer.
The surface of the reflective layer 426 facing the light guide panel 42 is smooth, that is, the surface roughness value of the reflective layer 426 facing the light guide panel 42 is small, in this embodiment, the surface roughness Ra of the reflective layer 426 facing the light guide panel 42 is less than 10 um.
A covering layer 427 is disposed on the surface of the light guide panel 42 facing away from the infrared baffle 43, the visible light can transmit through the covering layer 427, and the transmittance of the infrared light on the covering layer 427 is greater than 80%. The cover layer 427 is used to block, i.e., hide the internal structure of the display device 100 from the outside surface of the light guide panel 42.
In this embodiment, a mask layer 427 is coated on the fingerprint contact surface 421 of the light guide panel 42, and the mask layer 427 is connected to the reflective layer 426. The shielding layer 427 is a light-colored transparent ink layer formed on the light guide panel 42 by silk-screen printing, and diffusion particles are not doped in the ink layer.
In other embodiments, the masking layer 427 may be applied only on a side of the protection layer 428 opposite to the sensing layer 429, corresponding to at least one of the active light sources 44 and the fingerprint modules 46.
In other embodiments, the covering layer 427 may be coated on the side of the light guide panel 42 opposite to the fingerprint contact surface 421, or both sides of the light guide panel 42 opposite to each other may be provided with the covering layer 427.
In other embodiments, the decoration layer 427 may be disposed on the light guide panel 42 by inkjet or the like.
Each fingerprint module 46 includes an image sensor 461 and a fingerprint controller 462, at least one light emitted from the active light source 44 enters the interior of the light guide panel 42 after being reflected by the reflection surface 423, and is reflected inside the light guide panel 42, when the light is irradiated on the fingerprint contact surface 421 pressed with a fingerprint to be identified, the light is totally reflected with the fingerprint to be identified, the totally reflected light passes through the corresponding light-transmitting holes 432 and the light-transmitting areas 205 and is incident to the corresponding image sensor 461, the image sensor 461 receives the totally reflected light and acquires a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
During use, the display device 100 is installed on a housing of an electronic device, for example, a housing of a smart phone, at least one active light source 44 is disposed on a sidewall of the housing, a plurality of fingerprint modules 46 correspond to at least one active light source 44 disposed in the display screen 20, the infrared barrier 43 is covered on the display screen 20, and the light holes 432 of the infrared barrier 43 correspond to the fingerprint modules 46 one by one, and then the light guide panel 42 is covered on the infrared barrier 43, so that the reflection surface 423 corresponds to at least one active light source 44. The finger of the fingerprint to be recognized is contacted with the fingerprint contact surface 421 of the light guide panel 42, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls at least one active light source 44 to be turned on, the light emitted from at least one active light source 44 enters the interior of the light guide panel 42 after being reflected by the reflection surface 423, and is reflected inside the light guide panel 42 to irradiate on the fingerprint contact surface 421 pressed with the fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the totally reflected light passes through the corresponding light hole 432 and the light transmission region 205 to be incident on the corresponding image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the present invention. The structure of the display device of the second embodiment of the present invention is similar to that of the display device of the first embodiment, except that: in the second embodiment, the active light source 44 is disposed at the bottom side of the light guide panel 42, and a plurality of fingerprint modules 46 are arranged in a linear array along the bottom side of the light guide panel 42 corresponding to the active light source 44. The reflection surface 423 is provided at an intersection of the fingerprint contact surface 421 of the light guide panel 42 and the bottom side surface, that is, the reflection surface 423 is a chamfer of the intersection of the fingerprint contact surface 421 of the light guide panel 42 and the bottom side surface. The infrared baffle 43 is provided with a light hole 432 corresponding to each fingerprint module 46, at least one light emitted from the active light source 44 enters the inside of the light guide panel 42 after being reflected by the reflection surface 423, and is reflected inside the light guide panel 42, and irradiates the fingerprint contact surface 421 pressed with a fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the totally reflected light passes through the corresponding light hole 432 and enters the corresponding image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device according to a third embodiment of the present invention. The structure of the display device of the third embodiment of the present invention is similar to that of the display device of the first embodiment, except that: the fingerprint modules 46 are disposed inside the display screen 20 and attached to the side of the display screen 20 facing away from the infrared baffle 43, the display screen 20 is provided with a light-transmitting area 205 corresponding to each fingerprint module 46, and the totally reflected light passes through the corresponding light-transmitting hole 432 and the corresponding light-transmitting area 205 and is incident on the corresponding fingerprint module 46.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a display device according to a fourth embodiment of the present invention. The structure of the display device of the fourth embodiment of the present invention is similar to that of the display device of the first embodiment, except that: the fingerprint modules 46 are disposed inside the display screen 20 and attached to the side surface of the display screen 20 facing the infrared baffle 43, and the totally reflected light passes through the corresponding light holes 432 and is incident on the corresponding fingerprint modules 46.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a display device according to a fifth embodiment of the present invention. The structure of the display device of the fifth embodiment of the present invention is similar to that of the display device of the first embodiment, except that: in the fifth embodiment, the number of the active light sources 44 is two, the two active light sources 44 are respectively disposed at two opposite side edges of the light guide panel 42, the light guide panel 42 is provided with the reflection surface 423 corresponding to each active light source 44, and the light emitted by each active light source 44 is reflected by the corresponding reflection surface 423 and then enters the light guide panel 42.
Each reflective surface 423 is a chamfer at the intersection of the fingerprint contact surface 421 and the side of the light guide panel 42 adjacent the corresponding active light source 44. The included angle a between each reflecting surface 423 and the fingerprint contact surface 421 ranges from greater than 0 degrees to less than 90 degrees, and preferably ranges from 30 to 60 degrees.
The surface of each reflecting surface 423 is smooth, that is, the surface roughness value of the reflecting surface 423 is small. In this embodiment, the surface roughness Ra of the reflecting surface 423 is less than 10 um.
When in use, a finger to be identified is used to contact the fingerprint contact surface 421 of the light guide panel 42, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls each active light source 44 to be turned on, the light emitted from each active light source 44 enters the light guide panel 42 after being reflected by the corresponding reflection surface 423, and is reflected inside the light guide panel 42 to irradiate on the fingerprint contact surface 421 pressed with the fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the totally reflected light passes through the corresponding light hole 432 and the light transmission region 205 to be incident on the corresponding image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a display device according to a sixth embodiment of the present invention. The structure of the display device of the sixth embodiment of the present invention is similar to that of the display device of the first embodiment, except that: in the sixth embodiment, the fingerprint modules 46 are disposed on the side surface of the display screen 20 facing the infrared barrier 43, that is, the fingerprint modules 46 are sandwiched between the infrared barrier 43 and the display screen 20, and the fingerprint modules 46 correspond to the light holes 432 on the infrared barrier 43 one by one.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an electronic device according to a seventh embodiment of the invention. The electronic device of the present invention includes a housing 50, a main board 60 disposed in the housing 50, and the display device mentioned above, wherein the display device is disposed on the housing 50, and the display device is electrically connected to the main board 60.
The housing 50 includes a middle frame 52, the middle frame 52 includes two opposite sidewalls 520, and a supporting plate 525 connected between the two sidewalls 520. Display device's display screen 20 set up in on the backup pad 525, and be located two between the lateral wall 520, mainboard 60 set up in backup pad 525 is back of the body to one side of display screen 20, and is located two between the lateral wall 520. A plurality of fingerprint module 46 set up in the inside of display screen 20, infrared ray separates baffle 43 lid and locates on the display screen 20, infrared ray separates a plurality of on the baffle 43 light trap 432 with a plurality of fingerprint module 46 one-to-one, active light source 44 sets up in one of them on the lateral wall 520, light guide panel 42 lid is located on infrared ray separates the baffle 43, just light guide panel 42 is located two between the lateral wall 520.
In this embodiment, the side surfaces of the side walls 520 facing the light guide panel 42 are respectively provided with a receiving hole 521, and the active light source 44 is received in the receiving hole 521. The light emitted from the active light source 44 can be incident on the reflecting surface 423.
In the case of fingerprint recognition using the electronic device, a finger touches the fingerprint touch surface 421 of the light guide panel 42, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls the active light source 44 to turn on to emit infrared light to the reflective surface 423, the infrared light enters the inside of the light guide panel 42 after being reflected by the reflection surface 423, and is reflected inside the light guide panel 42 to irradiate on the fingerprint contact surface 421 pressed with the fingerprint to be identified, and totally reflected with the fingerprint to be identified, the totally reflected light passes through the corresponding light hole 432 and is incident to the corresponding image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Since the active light source 44 is disposed in the receiving hole 521 of one of the sidewalls 520, the fingerprint modules 46 are disposed inside the display screen 20, the infrared barrier 43 is disposed on the display screen 20, and the light guide panel 42 is disposed on the infrared barrier 43. Therefore, the fingerprint identification module 40 does not occupy the area of the display screen 20, so as to increase the screen occupation ratio of the electronic device 100, and the active light source 44 and the fingerprint module 46 do not occupy the internal space of the housing 50, which is favorable for the layout of the electronic components inside the housing 50.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an electronic device according to an eighth embodiment of the invention. An eighth embodiment of the present invention provides an electronic device having a structure similar to that of the seventh embodiment, except that: in the eighth embodiment, the inner side surfaces of the two side walls 520 of the electronic device are respectively provided with receiving holes 521a, and the two active light sources 44 are respectively received in the two receiving holes 521 a. A light-passing hole 523 for communicating with the corresponding receiving hole 521a is formed on the side surface of each sidewall 520 facing the light guide panel 42. The light guide panel 42 is provided with the reflection surface 423 corresponding to each active light source 44, and the two light holes 523 correspond to the two reflection surfaces 423 respectively. The light emitted from each active light source 44 passes through the corresponding light-passing hole 523 and is incident on the corresponding reflection surface 423, and is reflected by the reflection surface 423 and then is incident into the light guide panel 42. The aperture width of each light transmitting hole 523 is 1.1mm to 1.4mm, and in this embodiment, the aperture width of each light transmitting hole 523 is 1.4 mm.
The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.
Claims (19)
1. A fingerprint identification component is arranged on a display screen and is characterized in that the fingerprint identification component comprises a light guide panel, at least one active light source, at least one fingerprint module and an infrared baffle plate, wherein at least one active light source is arranged at one side adjacent to the light guide panel, the light guide panel is covered on the display screen, a fingerprint contact surface for pressing fingerprints is arranged on the light guide panel, the infrared baffle plate is overlapped between the light guide panel and the display screen, at least one light transmission hole is arranged on the infrared baffle plate, at least one fingerprint module is arranged between the infrared baffle plate and the display screen, at least one fingerprint module corresponds to the light transmission hole on the infrared baffle plate, and light emitted by at least one active light source is reflected by the interior of the light guide panel, the fingerprint identification device is characterized in that the fingerprint identification device irradiates on a fingerprint contact surface pressed with a fingerprint to be identified, the fingerprint contact surface and the fingerprint to be identified are totally reflected, totally reflected light rays penetrate through at least one light transmission hole to enter at least one fingerprint module, and at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light rays.
2. The fingerprint identification assembly of claim 1, wherein the infrared baffle has a plurality of at least one light hole, the at least one fingerprint module has a plurality of fingerprint modules, and the plurality of fingerprint modules are in one-to-one correspondence with the plurality of light holes.
3. The assembly of claim 1, wherein at least one of the fingerprint modules is disposed inside the display screen, the display screen is provided with a transparent area corresponding to at least one of the fingerprint modules, and the totally reflected light passes through at least one of the transparent holes and the transparent area and is incident on at least one of the fingerprint modules.
4. The assembly of claim 3, wherein at least one of the fingerprint modules is attached to a side of the display facing the infrared baffle.
5. The fingerprint identification assembly of claim 3, wherein at least one of the fingerprint modules is attached to a side of the display screen facing away from the infrared baffle.
6. The fingerprint identification assembly of claim 1, wherein at least one of the fingerprint modules is attached to a side of the display facing the infrared baffle.
7. The assembly of claim 1, wherein the light guide panel has a reflective surface facing at least one of the active light sources, and light emitted from at least one of the active light sources is reflected by the reflective surface and then enters the light guide panel.
8. The assembly of claim 1, wherein the number of the at least one active light source is two, the two active light sources are respectively disposed at two opposite sides of the light guide panel, two reflective surfaces are disposed on the light guide panel corresponding to the two active light sources, and light emitted by each of the active light sources is reflected by the corresponding reflective surface and then enters the light guide panel.
9. The fingerprint identification assembly of claim 7 or 8, wherein the reflective surface is coated with a reflective layer.
10. The fingerprint identification assembly of claim 9, wherein the reflective layer is an aluminum powder layer, a silver powder layer, or an infrared reflective pigment layer.
11. The fingerprint identification assembly of claim 1, wherein the display screen is an OLED screen.
12. The fingerprint identification assembly of claim 1, wherein the active light source is a near infrared light source.
13. The fingerprint identification assembly of claim 1, wherein visible light is transparent to the infrared baffle and infrared light is opaque to the infrared baffle.
14. The fingerprint identification assembly of claim 1, wherein a mask layer is disposed on a surface of the light guide panel facing away from the display screen, visible light can pass through the mask layer, and infrared light has a transmittance of greater than 80% through the mask layer.
15. The assembly of claim 1, wherein the fingerprint module comprises an image sensor and a fingerprint controller, the image sensor is configured to receive the totally reflected light and obtain a fingerprint image, and the fingerprint controller is configured to identify the fingerprint image sent by the image sensor.
16. The assembly of claim 15, wherein the light guide panel comprises a protection layer and a sensing layer, the sensing layer is disposed on a side of the light guide panel opposite to the fingerprint contact surface, and when a fingerprint to be recognized contacts the fingerprint contact surface of the light guide panel, the sensing layer sends a signal to the fingerprint controller, and the fingerprint controller controls the active light source to emit light.
17. A display device, characterized in that it comprises a display screen and a fingerprint recognition assembly according to any one of claims 1-16.
18. An electronic device, comprising a housing, a main board disposed in the housing, and the display device according to claim 17, wherein the display device is disposed on the housing, and the display device is electrically connected to the main board.
19. The electronic device according to claim 18, wherein the housing includes two opposite sidewalls and a supporting plate connected between the two sidewalls, the display screen is disposed on the supporting plate, the main board is disposed on a side of the supporting plate opposite to the display screen, and at least one of the active light sources is disposed on one of the sidewalls.
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| CN201810364149.6A CN108596080B (en) | 2018-04-20 | 2018-04-20 | Fingerprint identification assembly, display device and electronic device |
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