TWI699602B - Display device - Google Patents

Abstract

A display device includes a substrate and a display array. The substrate includes a display area and a periphery area. The display array is assigned on the substrate and in the display area. The display array includes multiple scan lines, multiple data lines, multiple common electrodes and multiple first transmitting electrodes. The scan lines cross the data lines and multiple sub-pixels are defined by the scan lines and data lines. Each sub-pixel includes at least a pixel electrode. The common electrodes are assigned among the sub-pixels. The first transmitting electrodes and the common electrodes are electrically independent. The pixel electrodes are assigned between two of first transmitting electrodes.

Description

Display device

The present disclosure relates to a display device, and particularly a display device capable of detecting 3D gestures.

With the development of technology, the demand for display devices has become more and more extensive. Traditionally, the 3D near-field technology uses a glass-type stack design, and the thickness of the panel module is relatively large. When the size of the panel is larger, the touch equivalent capacitance has more obvious influence on the sensitivity of touch gesture discrimination.

Therefore, how to reduce the thickness of the panel module and reduce the equivalent capacitance of touch is the current design consideration and challenge.

An implementation aspect of the present disclosure relates to a display device including a substrate and an electrode array. The substrate includes a display area and a peripheral area. The electrode array is arranged on the substrate and located in the display area. The electrode array includes a plurality of scanning lines and a plurality of data lines, a plurality of common electrodes and a plurality of first transfer electrodes. Scan lines and data lines are interlaced to define a plurality of sub-pixels. Each sub-pixel includes at least one pixel electrode. The common electrodes are respectively arranged in the sub-pixels. The first transfer electrode and the common electrode are electrically independent. The second pixel electrode is arranged in the first transfer electrode Between.

100: display device

104: scan line

106: data line

108: Touch wire

110, 190: substrate

120: drive circuit

140: display area

142: first transfer electrode

160: Surrounding area

162: first sensing electrode

180: electrode array

PX, PX_R, PX_G, PX_B: sub-pixel

PXe: pixel electrode

Vcom: common electrode

TP: Touch electrode

TP_TX: second transmitting electrode

TP_RX: second sensing electrode

TFT: Transistor

LC: display medium layer

AS: semiconductor layer

GI, BP1, BP2, BP3, PL: insulating layer

M1, M2, M21, M22, M3, M3_1, M3_2, G_M3: metal layer

ITO1, ITO2, G_ITO1, C_ITO1: conductive film layer

NPX, N41, N42, N43, N44, N51, N52, N53, N54, N71, N72, N73, N74, N92, N93: opening

X, Y, Z: direction

FIG. 1 is a schematic cross-sectional view of a display device according to some embodiments of the present disclosure.

FIG. 2 is a schematic diagram of a display device according to some embodiments of the present disclosure.

FIG. 3 is a schematic diagram of a display device according to some embodiments of the present disclosure.

FIG. 4A is a partial enlarged schematic diagram of a display device according to some embodiments of the present disclosure.

FIG. 4B is a perspective view of a display device according to the embodiment of FIG. 4A.

FIG. 5A is a partial enlarged schematic diagram of another display device according to some embodiments of the present disclosure.

FIG. 5B is a perspective view of a display device according to the embodiment of FIG. 5A.

FIG. 6A is a schematic cross-sectional view of the display device of the embodiment of FIG. 5A along the tangent line A5-A5'.

Fig. 6B is a schematic cross-sectional view of the display device of the embodiment of Fig. 5A along the tangent line B5-B5'.

FIG. 7A is a partial enlarged schematic diagram of another display device according to some embodiments of the present disclosure.

FIG. 7B is a perspective view of a display device according to the embodiment of FIG. 7A.

FIG. 8A is a schematic cross-sectional view of the display device of the embodiment of FIG. 7A along the tangent line A7-A7'.

FIG. 8B is a schematic cross-sectional view of the display device of the embodiment of FIG. 7A along the tangent line B7-B7'.

FIG. 9A is a partial enlarged schematic diagram of another display device according to some embodiments of the present disclosure.

FIG. 9B is a three-dimensional schematic diagram of a display device according to the embodiment of FIG. 9A.

FIG. 10A is a schematic cross-sectional view of the display device of the embodiment of FIG. 9A along the tangent line A9-A9'.

FIG. 10B is a schematic cross-sectional view of the display device of the embodiment of FIG. 9A along the tangent line B9-B9'.

FIG. 11A and FIG. 11B are schematic diagrams respectively showing another display device according to some embodiments of the present disclosure.

FIG. 12A and FIG. 12B are schematic diagrams illustrating a signal timing according to some embodiments of the present disclosure.

The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the specific embodiments described are only used to explain the case, not to limit the case, and the description of the structure operation is not used to limit the order of its execution. The recombined structure produces devices with equal functions, which are all covered by this disclosure Range.

Please refer to Figure 1. FIG. 1 is a schematic cross-sectional view of a display device 100 according to some embodiments of the present disclosure. As shown in FIG. 1, the display device 100 includes a lower substrate 110, a display medium layer LC, and an upper substrate 190. The display medium layer LC is located between the lower substrate 110 and the upper substrate 190. Between the lower substrate 110 and the display medium layer LC, the display device 100 sequentially includes a metal layer M1, a metal layer M2, a metal layer M3, a conductive thin film layer ITO1 and a conductive thin film layer ITO2. In some embodiments, the order of the metal layer M3 and the conductive thin film layer ITO1 can also be changed according to different methods of dry etching or wet etching.

In some embodiments, the display medium layer LC may be a liquid crystal layer or an electrophoretic layer. The substrate can be implemented by a glass substrate, a plastic substrate, or other suitable rigid or flexible substrates. For example, the lower substrate 110 may be an array substrate. The display device 100 may include active components (such as transistors), passive components (such as capacitors, resistors) or other suitable components disposed between the lower substrate 110 and the display medium layer LC. The upper substrate 190 may be an opposite substrate. The display device 100 may include a color filter or other suitable elements disposed between the display medium layer LC and the upper substrate 190.

For ease of description, the circuits and components of the display device 100 of the present disclosure are shown in FIG. 2 and FIG. 3, respectively. Please refer to Figure 2. FIG. 2 is a schematic diagram of a display device 100 according to some embodiments of the present disclosure. As shown in FIG. 2, the display device 100 includes a substrate 110, a driving circuit 120 and an electrode array 180. The substrate 110 includes a display area 140 and a peripheral area 160. The driving circuit 120 is disposed on the substrate 110 and located in the peripheral area 160. The electrode array 180 is disposed on the substrate 110 and located in the display area 140. Electrode array 180 contains A plurality of scan lines 104, a plurality of data lines 106, and a plurality of sub-pixels PX. The scan line 104 and the data line 106 intersect each other to define a plurality of sub-pixels PX. Each sub-pixel PX includes at least one pixel electrode (not shown in Figure 2).

In some embodiments, the scan line 104 is configured on the metal layer M1 in Figure 1, and the data line 106 is configured on the metal layer M2 in Figure 1. The pixel electrodes constituting the sub-pixel PX are arranged on the conductive thin film layer ITO2 in Figure 1. In some embodiments, the driving circuit 120 can be implemented by a touch with display driver (TDDI) chip, but it is not limited to this.

Next, please refer to Figure 3. FIG. 3 is a schematic diagram of a display device 100 according to some embodiments of the present disclosure. As shown in FIG. 3, the display device 100 includes a plurality of first transmitting electrodes 142, a plurality of second receiving electrodes 162, and common electrodes (not shown in FIG. 3). The first transfer electrode 142 is disposed on the substrate 110 and located in the display area 140. The second receiving electrode 162 is disposed on the substrate 110 and located in the peripheral area 160.

It is worth noting that FIG. 2 and FIG. 3 are only schematic diagrams for convenience of explanation, and are not used to show the configuration relationship on the laminated structure, and the number of components is only for illustration, and is not limited thereto. The configuration details between the pixel electrode, the common electrode, and the first transmission electrode 142 will be described in subsequent paragraphs.

Please refer to Figure 4A and Figure 4B. FIG. 4A is a partial enlarged schematic diagram of a display device 100 according to some embodiments of the present disclosure. FIG. 4B is a perspective view of a display device 100 according to the embodiment in FIG. 4A. In order to highlight the features of the display device 100 of the present disclosure, only the metal layers M1, M2, M3, the transistor TFT, the pixel electrode PXe, the common electrode Vcom, and the second electrode are schematically shown in FIGS. 4A and 4B. A transmission electrode 142. In this embodiment, the scan line 104 is disposed on the metal layer M1, and the data line 106 is disposed on the metal layer M2. The wire of the first transfer electrode 142 is disposed on the metal layer M3. The common electrode Vcom and the first transfer electrode 142 are arranged on the conductive thin film layer ITO1. The pixel electrode is arranged on the conductive thin film layer ITO2.

As shown in FIG. 4A, the scan lines 104 arranged on the metal layer M1 and the data lines 106 arranged on the metal layer M2 are staggered to define a plurality of pixels. In some implementations, the pixel may include three sub-pixels PX_R, PX_G, and PX_B. Each sub-pixel PX_R, PX_G, PX_B includes at least one pixel electrode PXe. In some embodiments, the metal layer M3 and the metal layer M2 overlap in the vertical projection direction (ie, the Z direction). The first transfer electrode 142 is disposed above the metal layers M2, M3. Specifically, viewed from the vertical projection direction (ie, the Z direction), the first transfer electrodes 142 and the pixel electrodes PXe are staggered along the X direction. In other words, the pixel electrode PXe is disposed between two of the plurality of first transfer electrodes 142.

In some embodiments, one or more pixel electrodes PXe constitute one sub-pixel PX. The common electrode Vcom is arranged in the sub-pixel PX. The first transfer electrode 142 and the common electrode Vcom are electrically independent of each other. Specifically, in other words, as shown in FIG. 4A, the first transfer electrode 142 and the common electrode Vcom are not in contact with each other. In practice, the common electrode Vcom can be formed through a patterning process. In some embodiments, the common electrode Vcom may include a plurality of portions that are not in contact with each other. These non-contact parts can be used as the electrodes in the touch unit at different time points. Detailed related content will be explained in subsequent paragraphs.

In some embodiments, the common electrodes Vcom are connected to each other through the conductive thin film layer ITO1. The first transfer electrodes 142 are connected to each other through the metal layer M3 Pick up. For example, as shown in FIG. 4B, the plurality of first transfer electrodes 142 are respectively connected to the plurality of wires disposed on the metal layer M3 through the openings N41, N42, N43, N44.

Please refer to Figure 5A and Figure 5B. FIG. 5A is a partial enlarged schematic diagram of another display device 100 according to some embodiments of the present disclosure. FIG. 5B is a perspective view of a display device according to the embodiment of FIG. 5A. In FIG. 5A and FIG. 5B, elements similar to those in FIG. 4A and FIG. 4B have been described in the previous paragraphs, and will not be repeated here. For ease of description, only the common electrode Vcom, the first transfer electrode 142, and the metal layer M3_1 connected to the first transfer electrode 142 are marked in the embodiment in FIG. 5A. In this embodiment, the common electrode Vcom and the first transfer electrode 142 are disposed on the conductive thin film layer ITO1. As shown in FIG. 5B, the common electrodes Vcom are connected to each other through the conductive thin film layer ITO1. The first transfer electrodes 142 are connected to each other through the metal layer M3. For example, the first transfer electrode 142 is connected to each metal layer M3_1 through the openings N51, N52, N53, and N54, respectively.

Specifically, please refer to Figure 6A. FIG. 6A is a schematic cross-sectional view of the display device 100 of the embodiment of FIG. 5A along the tangent line A5-A5'. In Figure 6A, the relative relationship between the substrate 110, the metal layers M1, M2, M3_1, the semiconductor layer AS, the insulating layers GI, BP1, BP2, BP3, PL, the conductive thin film layers ITO1 and ITO2 on the XZ plane is drawn.

Structurally, as shown in FIG. 6A, the metal layer M1 is disposed on the substrate 110. The insulating layer GI is disposed on the substrate 110 and the metal layer M1, and the insulating layer GI covers at least part of the metal layer M1. The semiconductor layer AS is disposed on the insulating layer GI. The metal layers M21, M22 are disposed on the insulating layer GI, and the metal layers M21, M22 respectively contact the semiconductor layer AS, and the metal layers M21 and M22 do not contact each other. The insulating layer BP1 is disposed on the semiconductor layer AS, the metal layers M21 and M22, and the insulating layer BP1 covers at least part of the conductive layer M22. The insulating layer PL is on the insulating layer BP1 to form a flat layer. The metal layer M3_1 is disposed on the insulating layer PL. The insulating layer BP2 is disposed on the insulating layer PL, and the insulating layer BP2 covers at least part of the metal layer M3_1. The conductive thin film layer G_ITO1 is located on the insulating layer BP2. The insulating layer BP3 is disposed on the insulating layer BP2 and the conductive thin film layer G_ITO1, and the insulating layer BP3 covers at least part of the conductive thin film layer G_ITO1. The conductive thin film layer ITO2 is located on the insulating layer BP3.

Furthermore, the insulating layers BP1, PL, BP2, and BP3 are etched to form the opening NPX, so that a part of the metal layer M22 is not covered by the insulating layer at the opening NPX. Therefore, the conductive thin film layer ITO2 can contact the metal layer M22 through the opening NPX. In addition, the insulating layer BP2 is etched to form openings N51 and N52, so that each part of the metal layer M3_1 is not covered by the insulating layer BP2 at the openings N51 and N52, respectively. Therefore, the thin film conductive layer G_ITO1 as the first transfer electrode 142 can contact the metal layer M3_1 through the openings N51 and N52, respectively.

Next, please refer to Figure 6B. Fig. 6B is a schematic cross-sectional view of the display device of the embodiment of Fig. 5A along the tangent line B5-B5'. In Fig. 6B, elements similar to those in Fig. 6A are represented by the same element symbols, and their relative relationships have been described in the previous paragraphs, and will not be repeated here. Structurally, as shown in FIG. 6B, in the X direction, the thin-film conductive layer ITO2 as the pixel electrode PXe is located between two or more thin-film conductive layers G_ITO1 as the first transfer electrode 142. In this embodiment, the pixel electrode PXe has a slit, but it is not limited to this. In addition, the thin film conductive layer G_ITO1 as the first transfer electrode 142 and the The thin-film conductive layer C_ITO1 that is the common electrode Vcom is arranged on the same plane or on the same insulating layer but not in contact with each other. Each metal layer M3_1 is a connecting wire extending along the Y direction, and each metal layer M3_1 is correspondingly used as a connecting wire of the first transfer electrode 142 at different positions.

In this way, a part of the conductive thin film layer ITO1 serves as the common electrode Vcom, and the other part of the conductive thin film layer ITO1 serves as the first transfer electrode 142, and the conductive thin film layers ITO1 of the two parts do not contact each other. The common electrode Vcom can be connected to each other through the conductive thin film layer ITO1, and the first transfer electrode 142 can be connected to each other through the metal layer M3.

Please refer to Figure 7A and Figure 7B. FIG. 7A is a partial enlarged schematic diagram of another display device 100 according to some embodiments of the present disclosure. FIG. 7B is a perspective view of a display device 100 according to the embodiment of FIG. 7A. In the embodiment of FIG. 7A, similar to the embodiment shown in FIG. 5A, the common electrode Vcom and the first transfer electrode 142 are both arranged on the conductive thin film layer ITO1. The pixel electrode PXe is disposed between two of the plurality of first transfer electrodes 142. Compared with the embodiment shown in FIG. 5A, in this embodiment, the first transfer electrodes 142 are connected to each other through the metal layer M3_1, and the common electrode Vcom is connected to each other through the metal layer M3_2. Among them, the metal layer M3_2 is different from the metal layer M3_1. For example, as shown in FIG. 7B, the first transfer electrode 142 is connected to the M3_1 of the metal layer through the openings N71 and N74. The common electrode Vcom is connected to the metal layer M3_2 through the openings N72 and N73. In some embodiments, the common electrodes Vcom can also be connected to each other through the conductive thin film layer ITO1.

Specifically, please refer to Figure 8A. FIG. 8A is a schematic cross-sectional view of the display device of the embodiment of FIG. 7A along the tangent line A7-A7'. At 8A In the figure, the elements similar to those in Fig. 6A are represented by the same element symbols, and their relative relationships have been described in the previous paragraphs, and will not be repeated here. Structurally, compared with the embodiment shown in FIG. 6A, in this embodiment, the first transfer electrode 142 is connected to the metal layer M3_1 through the opening N71. The common electrode Vcom is connected to the metal layer M3_2 through the opening N72.

To further illustrate, in the vertical projection direction (ie, the Z direction), the insulating layer BP2 under the metal layer M3_1 is etched to form an opening N71, so that part of the metal layer M3_1 is not covered by the insulating layer BP2 at the opening N71. Therefore, as shown in FIG. 8A, the thin-film conductive layer G_ITO1 as the first transfer electrode 142 can contact the metal layer M3_1 through the opening N71. Similarly, in the vertical projection direction (ie, the Z direction), the insulating layer BP2 under the metal layer M3_2 is etched to form an opening N72, so that part of the metal layer M3_2 is not covered by the insulating layer BP2 at the opening N72. Therefore, the thin film conductive layer C_ITO1 as the common electrode Vcom can contact the metal layer M3_2 through the opening N72.

Next, please refer to Figure 8B. FIG. 8B is a schematic cross-sectional view of the display device of the embodiment of FIG. 7A along the tangent line B7-B7'. In Fig. 8B, elements similar to those in Fig. 6B and Fig. 8A are represented by the same element symbols, and their relative relationships have been described in the previous paragraphs, and will not be repeated here. Structurally, compared with the embodiment shown in FIG. 6B, in this embodiment, the thin film conductive layer G_ITO1 is used as the first transfer electrode 142, and the metal layer M3_1 is used as the connecting wire of the first transfer electrode 142. The thin film conductive layer C_ITO1 is used as a common electrode Vcom, and the metal layer M3_2 is used as a connecting wire for the common electrode Vcom. The metal layers M3_1 and M3_2 are both connecting wires extending along the Y direction.

In this way, a part of the metal layer M3 is used as the first transmission The connecting wire of the electrode 142, and the other part of the metal layer M3 serves as the connecting wire of the common electrode Vcom, so that the common electrode Vcom and the first transfer electrode 142 can pass through the different parts of the metal layer M3 while maintaining electrical independence. connection.

Please refer to Figure 9A and Figure 9B. FIG. 9A is a partial enlarged schematic diagram of another display device 100 according to some embodiments of the present disclosure. FIG. 9B is a perspective view of a display device 100 according to the embodiment of FIG. 9A. Compared with the embodiments shown in FIGS. 5A and 7A, in the embodiment of FIG. 9A, the common electrode Vcom is disposed on the conductive thin film layer ITO1, and the first transfer electrode 142 is disposed on the metal layer G_M3. The pixel electrode PXe is disposed between two of the plurality of first transfer electrodes 142. In addition, the common electrodes Vcom can be connected to each other through the conductive thin film layer ITO1 or through the metal layer M3_2. For example, as shown in FIG. 9B, the common electrode Vcom is connected to the metal layer M3_2 through the openings N92 and N93.

Specifically, please refer to Figure 10A. FIG. 10A is a schematic cross-sectional view of the display device of the embodiment of FIG. 9A along the tangent line A9-A9'. In Fig. 10A, elements similar to those in Fig. 6A and Fig. 8A are represented by the same element symbols, and their relative relationships have been described in the previous paragraphs, and will not be repeated here. Structurally, compared with the embodiment shown in FIG. 8A, in this embodiment, the metal layer G_M3 is covered by the insulating layer BP2. Therefore, the metal layer G_M3 as the first transfer electrode 142 and the conductive thin film layer ITO1 are not connected to each other. In other words, the metal layer G_M3 as the first transfer electrode 142 and the conductive thin film layer ITO1 as the common electrode Vcom are electrically independent of each other. In addition, in the vertical projection direction (ie, the Z direction), the insulating layer BP2 under the metal layer M3_2 is etched to form an opening N92, so that part of the metal layer M3_2 is not covered by the insulating layer BP2 at the opening N92. Therefore, the thin film conductive layer C_ITO1 as the common electrode Vcom can contact the metal layer M3_2 through the opening N92.

Next, please refer to Figure 10B. FIG. 10B is a schematic cross-sectional view of the display device of the embodiment of FIG. 9A along the tangent line B9-B9'. In Fig. 10B, elements similar to those in Fig. 6B, Fig. 8B, and Fig. 10A are represented by the same element symbols, and their relative relationships have been described in the previous paragraphs, and will not be repeated here. Structurally, compared with the embodiment shown in Figure 8B, in this embodiment, the metal layer G_M3 is used as the first transfer electrode 142, and the metal layer G_M3 is not thinned in the vertical projection direction (ie, the Z direction). The conductive layers ITO1 or ITO2 overlap. In other words, the metal layer G_M3 serves as the first transfer electrode 142 and the connecting wire of the first transfer electrode 142. In addition, similar to the embodiment shown in FIG. 8B, the thin-film conductive layer C_ITO1 is used as the common electrode Vcom, and the metal layer M3_2 is used as the connecting wire of the common electrode Vcom.

In this way, a part of the metal layer M3 serves as the first transfer electrode 142, and the common electrode Vcom disposed on the conductive thin film layer ITO1 uses the other part of the metal layer M3 as the connecting wire of the common electrode Vcom.

It is worth noting that in some of the embodiments in FIGS. 5A to 10B described above, the common electrode Vcom located in the display area 140 can be completely connected to provide a reference voltage to all the sub-pixels PX. In some other embodiments, the common electrode Vcom located in the display area 140 can be divided into a plurality of electrodes, and each is connected to a corresponding touch wire for receiving touch sensing signals for touch detection. The specific content is explained as follows.

Please refer to Figure 11A and Figure 11B. Figure 11A and Figure 11B A schematic diagram of another display device 100 is drawn according to some embodiments of the present disclosure. In this embodiment, the electrode array (such as the electrode array 180 in FIG. 2) includes a self-capacitive touch electrode array. As shown in FIG. 11A, the display device 100 includes a plurality of touch electrodes TP and a plurality of touch wires 108. The touch electrode TP is disposed on the lower substrate 110 and located in the display area 140. Each touch electrode TP is connected to the driving circuit 120 through a corresponding touch wire 108. In some embodiments, the touch electrode TP can be implemented by the above-mentioned common electrode Vcom. In other words, the common electrode Vcom can be used for display and/or for 2D touch detection.

Specifically, the common electrode Vcom in the display area 140 may be divided into a plurality of areas, and the common electrode Vcom in each area is connected to each other to form a touch electrode TP. In addition, the touch wires 108 of the common electrode Vcom in each area can be implemented by the metal layer M3 mentioned above. The detailed content has been described in FIGS. 5A to 10B, and will not be repeated here.

In some other embodiments, the electrode array (such as the electrode array 180 in FIG. 2) includes a mutual capacitive touch electrode array. As shown in FIG. 11B, the display device 100 includes one or more touch transmission electrodes TP_TX, a plurality of touch sensing electrodes TP_RX, and a plurality of touch wires 108. The touch transmission electrode TP_TX and the touch sensing electrode TP_RX are disposed on the lower substrate 110 and located in the display area 140, and the touch transmission electrode TP_TX and the touch sensing electrode TP_RX are electrically independent of each other. The touch transmission electrode TP_TX and the touch sensing electrode TP_RX are respectively connected to the driving circuit 120 through the corresponding touch wire 108.

Specifically, the touch transmission electrode TP_TX and the touch sensing electrode TP_RX can be implemented by the aforementioned common electrode Vcom. For example, the common electrode Vcom in the display area 140 may be divided into a plurality of regions. Multiple regions One of the common electrodes Vcom is connected to each other to form a touch transmission electrode TP_TX. The common electrodes Vcom in the remaining multiple regions are connected to each other to form multiple touch sensing electrodes TP_RX, respectively. In addition, the touch wires 108 of the common electrode Vcom in each area can be implemented by the metal layer M3 mentioned above. The detailed content has been described in FIGS. 5A to 10B, and will not be repeated here.

It is worth noting that the touch wires 108 shown in FIGS. 11A and 11B are only examples for convenience of description, and their size or number are not used to limit the content of this disclosure. Each touch electrode can be connected to one or Multiple touch wires. The touch electrodes TP shown in Figure 11A and the touch transmission electrodes TP_TX and touch sensing electrodes TP_RX shown in Figure 11B are also only examples for convenience of description, and their size or number is not intended to limit the present invention. To reveal the content, the shape or area of the common electrode Vcom included in each area can be designed according to actual needs. In addition, in some embodiments, the common electrode Vcom located in the display area 140 may not be divided. In other words, the common electrode Vcom is only used for display.

However, when the common electrode Vcom is only used for display, the display device 100 can still be equipped with an external touch sensor (for example: on-cell touch sensor or out-cell touch sensor) to achieve touch control. Integration with gestures. For example, in the embodiment shown in FIG. 5A, the common electrode Vcom is only used to provide the reference voltage to the sub-pixel PX during display. Therefore, in the embodiment of FIG. 5A, the display device 100 is only used to perform display and/or 3D gesture detection, but the function of detecting 2D touch can be achieved by an external touch sensor.

Please refer to Figure 12A and Figure 12B. FIG. 12A and FIG. 12B are schematic diagrams illustrating a signal timing according to some embodiments of the present disclosure. As shown in FIG. 12A, during the display period Dis, the display device 100 is used To display. During the gesture sensing period Ges, when the 3D gesture sensing function is enabled, the display device 100 is used to perform 3D gesture detection. Specifically, during the period P1, the common electrode Vcom of the display device 100 is used to provide a reference voltage to the sub-pixel PX. During the period P2, the common electrode Vcom of the display device 100 is also used to provide a reference voltage to the sub-pixel PX, and the first transmission electrode 142 is used to receive the gesture sensing signal and generate an electric field according to the gesture sensing signal for gesture detection. The first receiving electrode 162 is used for recognizing and tracking gestures according to changes in the electric field.

In other words, since the first transmission electrode 142 and the common electrode Vcom are not connected to each other, in the same period (eg, period P2), the display device 100 can display and detect 3D gestures at the same time.

In addition, during the touch sensing period Tou, the display device 100 is used to detect 2D touch. Specifically, in the third period P3, the common electrode Vcom of the display device 100 is used to receive touch sensing signals for 2D touch detection. In some embodiments, Tou can be configured in a vertical blank interval (VBI) where display cannot be performed during the touch sensing period.

In some other embodiments, as shown in FIG. 12B, when the 3D gesture sensing function is disabled, the display device 100 is used for displaying and detecting 2D touch. Specifically, since the common electrode Vcom also serves as the touch electrode TP, during the display period Dis (eg, period P1), the common electrode Vcom in all regions is used to provide the same reference voltage to the sub-pixel PX. During the touch sensing period Tou (eg, period P3), the common electrodes Vcom in different areas are used to receive corresponding touch sensing signals for 2D touch detection. For example, during the period P3, a part of the common electrode Vcom serving as the second transmitting electrode TP_TX is used to output touch sensing signals with alternating high and low levels, and is used as part of the second sensing electrode TP_RX The common electrode Vcom is used to detect changes in capacitance for 2D touch detection. In addition, part of the common electrode Vcom as the second sensing electrode TP_RX can also be further divided to perform 2D touch detection in sequence according to different timings.

It should be noted that, in the case of no conflict, the features and circuits in the various drawings, embodiments, and embodiments of the present disclosure can be combined with each other. The circuit shown in the drawing is only an example, and is simplified to make the description concise and easy to understand, and is not intended to limit the case. In addition, the various devices, units, and components in the foregoing embodiments can be implemented by various types of digital or analog circuits, and can also be implemented by different integrated circuit chips, or integrated into a single chip. The foregoing is only an example, and the present disclosure is not limited to this.

In summary, by applying the above-mentioned various embodiments, the first transmission electrode 142 and the common electrode Vcom can be integrated in the in-cell panel and electrically independent of each other through the configuration and connection design, so that the display device can be simultaneously Perform display and 3D gesture detection. In addition, part of the thin-film conductive layer can be used as the common electrode Vcom and the touch electrode TP according to different timings, so that the functions of 2D touch and 3D gesture detection can be included without increasing the thickness of the panel.

Although the content of this disclosure has been disclosed in the above embodiments, it is not intended to limit the content of this disclosure. Those with ordinary knowledge in the technical field can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, this The scope of protection of the disclosed content shall be subject to the scope of the attached patent application.

PX_R, PX_G, PX_B‧‧‧sub pixel

M1, M2, M3‧‧‧Metal layer

Vcom‧‧‧Common electrode

PXe‧‧‧Pixel electrode

142‧‧‧First transfer electrode

TFT‧‧‧Transistor

N41, N42, N43, N44‧‧‧ opening

X, Y, Z‧‧‧direction

Claims (9)

A display device includes: a substrate including a display area and a peripheral area; and an electrode array disposed on the substrate and located in the display area, the electrode array including: a plurality of scanning lines and a plurality of data Lines, interlacing each other to define a plurality of sub-pixels, each sub-pixel includes at least one pixel electrode; a plurality of common electrodes are respectively arranged in the sub-pixels; and a plurality of first transmission electrodes, the first transmission The electrodes and the common electrodes are electrically independent of each other, wherein the pixel electrode is disposed between the two of the first transfer electrodes, and in the same period, the common electrodes are used to provide a reference voltage to the sub For pixels, the first transmitting electrodes are used to receive a gesture sensing signal for gesture detection. The display device of claim 1, wherein the display device further includes a display medium layer, and the display medium layer and the substrate sequentially include: a first metal layer; a second metal layer; and a third metal Layer; a first conductive film layer; and a second conductive film layer, wherein the scan lines are configured in the first metal layer, and the data lines are configured in the second metal layer. The display device according to claim 2, wherein the common electrodes and the first transmission electrodes are disposed on the first conductive thin film layer. The display device according to claim 3, wherein the first transmission electrodes are connected to each other through the third metal layer, and the common electrodes are connected to each other through the first conductive film layer. The display device according to claim 3, wherein the first transmission electrodes are connected to each other through a first portion of the third metal layer, and the common electrodes are connected to each other through a second portion of the third metal layer, wherein the The second part of the third metal layer is different from the first part of the third metal layer. The display device according to claim 2, wherein the common electrodes are arranged on the first conductive thin film layer, and the first transfer electrodes are arranged on the third metal layer. The display device according to claim 1, wherein in a first period, the common electrodes are used to provide a reference voltage to the sub-pixels, and in a second period different from the first period, the common electrodes The common electrode is used for receiving a touch sensing signal for touch detection. The display device according to claim 1, wherein the display device further comprises a first receiving electrode, and the first receiving electrode is disposed on the substrate and Located in the surrounding area. The display device according to claim 1, wherein the common electrodes include a second transmission electrode and a second sensing electrode, and the second transmission electrode and the second sensing electrode are electrically independent of each other.

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