TWI658385B - Touch display apparatus and method of reducing signal interference - Google Patents

Abstract

A touch display device includes a pixel array substrate, a driving unit, an opposite substrate, a display medium, a first touch electrode, a touch trace, and a conductive vent pattern. The driving unit is disposed on the pixel array substrate and is used to drive the pixel array substrate. The opposite substrate is disposed opposite to the pixel array substrate. The display medium is disposed between the pixel array substrate and the opposite substrate. The first touch electrode is disposed on the opposite substrate. The touch trace is disposed on the opposite substrate and is electrically connected to the first touch electrode. The conductive vent pattern is disposed on the opposite substrate. The conductive vent pattern shields the driving unit and is located between the touch trace and the driving unit. A method for reducing signal interference by using the above-mentioned conductive vent pattern is also proposed.

Description

Touch display device and method for reducing signal interference

The present invention relates to a display device, and more particularly to a touch display device.

Among various electronic products (such as mobile phones, tablet computers, notebook computers, etc.), electronic devices with touch and display functions occupy a place. In response to the thinning of electronic products, touch display devices have moved from out-cell to in-cell or on-cell. The touch display device includes a display panel and a touch sensing structure disposed on the display panel. Narrow bezels are a long-term development trend of display panels. Currently, the design of gate driver circuits and pixel array substrate integration (commonly known as GOA, Gate on array) can achieve narrow bezel display panels. However, when the gate driving circuit of the display panel is too close to the touch sensing structure, or even if the operating frequency of the two is the same or too close, the display signal of the display panel may interfere with the touch signal of the touch sensing structure. Causes touch malfunction.

The invention provides a touch display device with excellent touch performance.

The touch display device of the present invention includes a pixel array substrate, a driving unit disposed on the pixel array substrate and used to drive the pixel array substrate, an opposite substrate disposed opposite to the pixel array substrate, and disposed on the pixel array. A display medium between the substrate and the opposite substrate, a first touch electrode disposed on the opposite substrate, a touch trace disposed on the opposite substrate and electrically connected to the first touch electrode, and disposed on the opposite A conductive vent pattern on the substrate. The conductive vent pattern shields the driving unit and is located between the touch trace and the driving unit.

In an embodiment of the invention, the touch display device further includes an insulating layer. The insulating layer covers the conductive vent pattern. The touch trace is disposed on the insulation layer.

In an embodiment of the present invention, the above-mentioned insulating layer further covers the first touch electrode and has a plurality of through holes exposing the first touch electrode. The touch trace is electrically connected to the first touch electrode through the through hole.

In an embodiment of the present invention, the first touch electrode includes a lower layer portion and an upper layer portion. The insulating layer further covers a lower layer portion of each first touch electrode. An upper layer portion of each first touch electrode is disposed on the insulating layer and overlaps the conductive vent pattern. The insulating layer has a through hole exposing a lower layer portion. The upper layer part is electrically connected to the lower layer part through a perforation.

In an embodiment of the present invention, the touch display device further includes a plurality of second touch electrodes. The second touch electrode is disposed on the insulating layer. The extending direction of the first touch electrode is different from the extending direction of the second touch electrode.

In one embodiment of the present invention, the touch traces and the second touch electrode are formed in the same film layer.

In an embodiment of the present invention, the first touch electrode includes a lower layer portion and an upper layer portion. The insulating layer further covers a lower layer portion of each first touch electrode. An upper layer portion of each first touch electrode is disposed on the insulating layer and overlaps the conductive vent pattern. The upper layer portion of each first touch electrode and the second touch electrode are formed in the same film layer.

In an embodiment of the present invention, at least a part of each of the first touch electrodes described above is formed in the same film layer as the conductive vent pattern.

In one embodiment of the present invention, the conductive vent pattern is grounded.

In an embodiment of the present invention, the touch display device further includes an electrostatic protection circuit. The ESD protection circuit surrounds the first touch electrode and the touch trace. The conductive vent pattern is electrically connected to the electrostatic protection circuit.

In an embodiment of the invention, the above-mentioned opposite substrate has an outer surface facing away from the display medium, and the first touch electrode and the conductive vent pattern are disposed on the outer surface of the opposite substrate.

In an embodiment of the present invention, the above-mentioned opposite substrate has an inner surface facing the display medium, and the first touch electrode and the conductive vent pattern are disposed on the inner surface of the opposite substrate.

In an embodiment of the present invention, the above-mentioned opposite substrate has a recess. The depression overlaps the driving unit and the conductive vent pattern.

In an embodiment of the present invention, the driving unit includes a gate driving circuit integrated with the pixel array substrate.

The method for reducing signal interference of the present invention includes the following steps: providing a touch display device, the touch display device including a pixel array substrate, a driving unit configured on the pixel array substrate and providing a display signal to the pixel array substrate, and a configuration An opposite substrate opposite to the pixel array substrate, a display medium disposed between the pixel array substrate and the opposite substrate, a plurality of first touch electrodes disposed on the opposite substrate, and an opposite substrate And a plurality of touch traces electrically connected to the first touch electrode, wherein the touch traces have a touch signal; the conductive vent pattern covers the drive unit and is located between the touch trace and the drive unit to reduce display The signal and the touch signal interfere with each other.

Based on the above, a touch display device according to an embodiment of the present invention includes a conductive vent pattern that shields the driving unit and is located between the touch trace and the driving unit. Through the shielding of the conductive vent pattern, the touch signal transmitted on the touch trace and / or the first touch electrode is not easily affected by the display signal sent from the driving unit, so that the touch display device has good touch characteristics. .

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. FIG. 2 is a schematic top view of a touch display device according to an embodiment of the present invention. For the sake of clarity, FIG. 2 omits the illustration of some components (for example, the second touch electrode 192) of FIG. 1. 1 and FIG. 2, the touch display device 100 includes a pixel array substrate 110, a driving unit 120, an opposite substrate 130, a display medium 140, a plurality of first touch electrodes 150, a plurality of touch traces 160, and Conductive vent pattern 170. The driving unit 120 is disposed on the pixel array substrate 110 and is configured to drive the pixel array substrate 110. In detail, in this embodiment, the pixel array substrate 110 has a plurality of thin film transistors, a plurality of pixel electrodes electrically connected to a plurality of drain electrodes of the plurality of thin film transistors, and a plurality of thin film transistors. A plurality of data lines electrically connected to a plurality of sources and a plurality of scan lines electrically connected to a plurality of gates of a plurality of thin film transistors. The driving unit 120 is electrically connected to a plurality of scanning lines to drive the plurality of thin film transistors, so that the touch display device 100 displays a picture. In other words, the driving unit 120 is a gate driver on array (GOA). The gate driving circuit and the manufacturing process of the pixel array substrate 110 can be integrated together, but the invention is not limited thereto.

The opposite substrate 130 is disposed opposite to the pixel array substrate 110. In this embodiment, the opposite substrate 130 is, for example, a color filter substrate, but the present invention is not limited thereto. The display medium 140 is disposed between the pixel array substrate 110 and the opposite substrate 130. In this embodiment, the display medium 140 is, for example, a liquid crystal. However, the present invention is not limited to this. In other embodiments, the display medium 140 may also be an organic light-emitting diode (OLED) or other suitable materials.

In this embodiment, the touch display device 100 further includes a sealant 180. The frame adhesive 180 is connected between the pixel array substrate 110 and the opposite substrate 130. The display medium 140 is housed in a space surrounded by the frame 180, the pixel array substrate 110 and the opposite substrate 130. The pixel array substrate 110 has a pixel area 110a for displaying a screen, a dummy area 110b located between the pixel area 110a and the frame 180, a frame adhesive coating area 110c where the frame 180 is located, and a frame 180 Outside the peripheral area 110d. In the embodiment of FIG. 1, the driving unit 120 may be disposed in a pseudo area 110 b between the pixel area 110 a and the frame 180 without overlapping the frame 180. However, the present invention is not limited to this. In another embodiment, the driving unit 120 may be located in the pseudo area 110b and the sealant coating area 110c. In another embodiment, the driving unit 120 may be located in the pseudo area 110b and the sealant coating. The area 110c even extends to the peripheral area 110d outside the frame 180. The present invention does not limit the distribution range of the driving unit 120, and the distribution range of the driving unit 120 may depend on actual needs.

The plurality of first touch electrodes 150 are disposed on the opposite substrate 130. In this embodiment, the touch display device 100 further includes an insulating layer 190 covering the first touch electrode 150. The touch display device 100 further includes a plurality of second touch electrodes 192. The second touch electrode 192 is disposed on the insulating layer 190. The insulating layer 190 is interposed at least at the intersection of the first touch electrode 150 and the second touch electrode 192 to electrically isolate the first touch electrode 150 from the second touch electrode 192. The first touch electrodes 150 and the second touch electrodes 192 are used to sense a touch position of a user. The extension direction x of the first touch electrode 150 is different from the extension direction y of the second touch electrode 192. For example, the extending direction x of the first touch electrode 150 and the extending direction y of the second touch electrode 192 may be perpendicular, but the present invention is not limited thereto.

In this embodiment, the first touch electrode 150, the insulating layer 190, and the second touch electrode 192 can be regarded as a touch sensing structure TP. The opposite substrate 130 has an inner surface 130 a facing the display medium 140 and an outer surface 130 b facing away from the display medium 140. In this embodiment, the touch sensing structure TP and the conductive venting pattern 170 can be selectively disposed on the outer surface 130 b of the opposite substrate 130. In other words, the touch display device 100 may be an on-cell touch display panel. However, the present invention is not limited to this. In other embodiments, the touch display device may also be an in-cell or other appropriate type of touch display device. The following paragraphs will be accompanied by other illustrations. Of it.

The plurality of touch traces 160 are disposed on the opposite substrate 130 and are electrically connected to the plurality of first touch electrodes 150 respectively. The conductive vent pattern 170 is disposed on the opposite substrate 130. In detail, in this embodiment, the insulating layer 190 covers the conductive vent pattern 170 and the first touch electrode 150 and has a plurality of through holes 190 a exposing the plurality of first touch electrodes 150. The plurality of touch traces 160 are disposed on the insulating layer 190 and are electrically connected to the first touch electrodes 150 through the through holes 190a. In this embodiment, based on the consideration of simplifying the manufacturing process, the conductive vent pattern 170 and at least a part of the first touch electrode 150 can be made together, and at least a part of the first touch electrode 150 and the conductive vent pattern 170 can be made together. Formed on the same film layer. However, the present invention is not limited to this. In other embodiments, the conductive vent pattern 170 and the first touch electrode 150 may be made separately, and the conductive vent pattern 170 and the first touch electrode 150 may belong to different film layers, respectively. . In addition, based on the consideration of simplifying the manufacturing process, in this embodiment, at least a part of the plurality of touch traces 160 and the second touch electrode 192 may be selectively fabricated together, and the touch traces 160 and the first At least a part of the two touch electrodes 192 may be formed on the same film layer. However, the present invention is not limited to this. In other embodiments, the touch traces 160 and the second touch electrodes 192 may be made separately, and the touch traces 160 and the second touch electrodes 192 may be different. Film layer.

It is worth noting that the conductive vent pattern 170 covers the driving unit 120 and is located between the plurality of touch lines 160 electrically connected to the first touch electrode 150 and the driving unit 120. Due to the shielding of the conductive vent pattern 170, the touch signal transmitted on the touch trace 160 and / or the first touch electrode 150 is not easily affected by the display signal sent from the driving unit 120. Even if the frequency of the touch signal is close to or the same as the frequency of the display signal, the touch signal and the display signal are not easy to interfere with each other, so that the touch display device 100 has both good display and touch characteristics. In this embodiment, the conductive vent pattern 170 can be grounded to vent electromagnetic noise thereon. For example, as shown in FIG. 2, the conductive vent pattern 170 may be grounded using a trace 172 separate from the touch trace 160. In this embodiment, the trace 172 and the conductive vent pattern 170 may be formed on the same film layer. However, the present invention is not limited to this. In other embodiments, the conductive vent pattern 170 may also be grounded by using other components. The following description is illustrated with reference to FIGS. 3 and 4.

FIG. 3 is a schematic top view of a touch display device according to another embodiment of the present invention. For clarity, some components of the touch display device are omitted in FIG. 3. The touch display device 100A of FIG. 3 is similar to the touch display device 100 of FIG. 2, and therefore the same or corresponding components are represented by the same or corresponding reference numerals. The difference between the touch display device 100A and the touch display device 100 is that the touch display device 100A further includes an electrostatic protection line 194 surrounding the first touch electrode 150 and the touch trace 160, and the conductive vent pattern 170 and the electrostatic protection line 194. For electrical connection, the conductive vent pattern 170 can be grounded using an existing electrostatic protection circuit 194 to simplify circuit design. In this embodiment, the ESD protection circuit 194 and the touch trace 160 are formed on the same film layer. The ESD protection circuit 194 may be stacked on the conductive vent pattern 170 or the trace 172 (labeled in FIG. 2). However, the present invention is limited to this. In other embodiments, the electrostatic protection circuit 194 may be formed in the same film layer with the conductive vent pattern 170, and the electrostatic protection circuit 194 and the conductive vent pattern 170 formed in the same film layer may be disposed through The conductive patterns (not shown) between the two are electrically connected to each other to increase isolation and make the electrostatic protection circuit 194 also protect the conductive vent pattern 170 from being easily damaged by static electricity; electrically connected to the electrostatic protection line 194 and conductive vent The conductive patterns (not shown) between the patterns 170 may be formed in the same film layer as the ESD protection circuit 194 and the conductive vent pattern 170, but the invention is not limited thereto.

FIG. 4 is a schematic top view of a touch display device according to another embodiment of the present invention. For the sake of clarity, the top view of the touch display device in FIG. 4 omits the drawing of some components. The touch display device 100B of FIG. 4 is similar to the touch display device 100 of FIG. 2, and therefore the same or corresponding elements are represented by the same or corresponding reference numerals. The difference between the touch display device 100B and the touch display device 100 is that the touch display device 100B includes a trace 196 separated from the touch trace 160 and located between the touch trace 160 and the first touch electrode 150, and The conductive vent pattern 170 is grounded using a trace 196.

FIG. 5 is a schematic cross-sectional view of a touch display device according to another embodiment of the present invention. FIG. 6 is a schematic top view of a touch display device according to another embodiment of the present invention. For the sake of clarity, some components of FIG. 5 (for example, the second touch electrode 192) are omitted in FIG. 6. Please refer to FIG. 5 and FIG. 6, the touch display device 100C is similar to the touch display device 100, and therefore the same or corresponding components are represented by the same or corresponding reference numerals. The main difference between the touch display device 100C and the touch display device 100 is that the conductive vent pattern 170C of the touch display device 100C overlaps with the touch trace 160 and also overlaps with some of the first touch electrodes 150C. The following mainly explains this difference. The two are the same or correspond to each other. Please refer to the previous description, which will not be repeated here.

5 and 6, the touch display device 100C includes a pixel array substrate 110, a driving unit 120C, an opposite substrate 130, a display medium 140, a plurality of first touch electrodes 150C, a plurality of touch traces 160, and a conductive layer. Catharsis pattern 170C. The driving unit 120C is disposed on the pixel array substrate 110 and is used to drive the pixel array substrate 110. The opposite substrate 130 is disposed opposite to the pixel array substrate 110. The first touch electrode 150C is disposed on the opposite substrate 130. The touch trace 160 is disposed on the opposite substrate 130 and is electrically connected to the first touch electrode 150C. The conductive vent pattern 170C shields the driving unit 120C and is located between the plurality of touch lines 160 electrically connected to the first touch electrode 150C and the driving unit 120C.

One difference from the touch display device 100 is that the conductive vent pattern 170C overlaps with a portion of the first touch electrode 150C in addition to the touch trace 160. In detail, the first touch electrode 150C includes a lower layer portion 152 and an upper layer portion 154. The insulating layer 190 covers the lower layer portion 152 of the first touch electrode 150C. The upper layer portion 154 of the first touch electrode 150C is disposed on the insulating layer 190 and overlaps the conductive vent pattern 170C. The insulating layer 190 has a through hole 190b that exposes the lower layer portion 152. The upper layer portion 154 of the first touch electrode 150C is electrically connected to the lower layer portion 152 through the through hole 190b. Based on the consideration of simplifying the manufacturing process, in this embodiment, the upper layer portion 154 and the second touch electrode 192 of the first touch electrode 150C may be fabricated together, and the upper layer portion 154 and the second touch electrode of the first touch electrode 150C 192 may be formed in the same film layer. However, the present invention is not limited to this. In other embodiments, the upper layer portion 154 and the second touch electrode 192 of the first touch electrode 150C may be fabricated separately, and the upper layer portion 154 and the first touch electrode 150C may be fabricated separately. The two touch electrodes 192 can also be formed in two different film layers. In addition, the touch display device 100 is different from the touch display device 100C in that the driving unit 120C of the touch display device 100C is located in the dummy area 110b and extends to the frame adhesive coating area 110c and the peripheral area 110d and overlaps the frame adhesive 180 . The touch display device 100C has similar functions and advantages as the touch display device 100, and will not be repeated here.

FIG. 7 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. Referring to FIG. 7, the touch display device 100D is similar to the touch display device 100, and therefore the same or corresponding components are represented by the same or corresponding reference numerals. The main difference between the touch display device 100D and the touch display device 100 is that the driving unit 120D is also located in the sealant coating area 110c, and the opposite substrate 130 has a recess 132. The recess 132 of the opposite substrate 130 overlaps with the driving unit 120D and the conductive vent pattern 170. The driving unit 120D has a certain thickness. When the driving unit 120D overlaps the frame rubber 180, the opposite substrate 130 may selectively have a recess 132 overlapping the frame rubber 180 to compensate for the height difference caused by the setting of the driving unit 120D. Furthermore, the appearance of the touch display device 100D is maintained flat.

FIG. 8 is a schematic cross-sectional view of a touch display device according to another embodiment of the present invention. Referring to FIG. 8, the touch display device 100E is similar to the touch display device 100, and therefore the same or corresponding components are represented by the same or corresponding reference numerals. The main difference between the touch display device 100E and the touch display device 100 is that the touch sensing structure TP and the conductive venting pattern 170 of the touch display device 100E are located on the inner surface 130 a of the opposite substrate 130. In other words, the touch display device 100E is an in-cell touch display panel. The touch display device 100E has similar functions and advantages as the touch display device 100, and will not be repeated here. In addition, in the embodiment of FIGS. 7 and 8, the first touch electrode 150 is a single layer as an example; however, the present invention is not limited thereto. In other embodiments, the touch display device 100D of FIGS. 7 and 8 The first touch electrodes 150 and 100E may also adopt the design of the first touch electrodes 150C including the lower layer portion 152 and the upper layer portion 154 as shown in FIG. 5. Furthermore, in other embodiments, the opposite substrate 130 of the touch display device 100E of FIG. 8 may also adopt the design of the opposite substrate 130 having the recess 132 in FIG. 7.

In summary, a touch display device according to an embodiment of the present invention includes a pixel array substrate, a driving unit disposed on the pixel array substrate and used to drive the pixel array substrate, and an opposite device disposed on the pixel array substrate. A counter substrate, a display medium disposed between the pixel array substrate and the counter substrate, a first touch electrode disposed on the counter substrate, and a contact disposed on the counter substrate and electrically connected to the first touch electrode Controlling the traces and the conductive vent pattern disposed on the opposite substrate. The conductive vent pattern shields the driving unit and is located between the touch trace and the driving unit. Through the shielding of the conductive vent pattern, the touch signal transmitted on the touch trace and / or the first touch electrode is not easily affected by the display signal sent from the driving unit, so that the touch display device has good touch characteristics. .

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100, 100A to 100E: touch display device 110: pixel array substrate 110a: pixel area 110b: pseudo area 110c: frame coating area 110d: peripheral area 120, 120C, 120D: drive unit 130: opposite substrate 130a : Inner surface 130b: outer surface 132: depression 140: display medium

150, 150C‧‧‧first touch electrode

152‧‧‧ Lower Department

154‧‧‧ Upper Department

160‧‧‧Touch routing

170, 170C‧‧‧Conductive vent pattern

172, 196‧‧‧ route

180‧‧‧Frame glue

190‧‧‧ insulation

190a, 190b ‧‧‧ perforated

192‧‧‧Second touch electrode

194‧‧‧ESD Protection Circuit

TP‧‧‧Touch sensing structure

x, y‧‧‧ directions

FIG. 1 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. FIG. 2 is a schematic top view of a touch display device according to an embodiment of the present invention. FIG. 3 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 4 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of a touch display device according to another embodiment of the present invention. FIG. 6 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. FIG. 8 is a schematic cross-sectional view of a touch display device according to another embodiment of the present invention.

Claims (13)

A touch display device includes: a pixel array substrate; a driving unit disposed on the pixel array substrate and used to drive the pixel array substrate; a pair of opposing substrates disposed on the pixel array substrate. A display medium disposed between the pixel array substrate and the opposite substrate; a plurality of first touch electrodes disposed on the opposite substrate; a plurality of touch traces disposed on the opposite substrate And is electrically connected to the first touch electrodes; a conductive vent pattern is disposed on the opposite substrate, wherein the conductive vent pattern covers the driving unit and is located between the touch traces and the driving unit And an insulating layer covering the conductive vent pattern, wherein the touch traces are disposed on the insulating layer, the insulating layer further covers the first touch electrodes and has a plurality of exposed first touch electrodes. Through holes, and the touch traces are electrically connected to the first touch electrodes through the through holes. The touch display device according to item 1 of the application, wherein each of the first touch electrodes includes a lower layer portion and an upper layer portion, and the insulating layer further covers the lower layer portion of each of the first touch electrodes. The upper layer portion of each of the first touch electrodes is disposed on the insulating layer and overlaps the conductive vent pattern, the insulating layer has a perforation exposing the lower layer portion, and the upper layer portion communicates with the lower layer portion through the perforation. Sexual connection. The touch display device according to item 1 of the scope of patent application, further comprising: a plurality of second touch electrodes disposed on the insulating layer, wherein an extension direction of the first touch electrodes and the second touch electrodes The control electrodes extend in different directions. The touch display device according to item 3 of the scope of patent application, wherein the touch traces and the second touch electrodes are formed in the same film layer. The touch display device according to item 3 of the scope of patent application, wherein each of the first touch electrodes includes a lower layer portion and an upper layer portion, and the insulating layer further covers the lower layer portion of each of the first touch electrodes. The upper layer portion of each of the first touch electrodes is disposed on the insulating layer and overlaps the conductive vent pattern, and the upper layer portion of each of the first touch electrodes and the second touch electrodes are formed on Same film layer. The touch display device according to item 1 of the scope of patent application, wherein at least a part of each of the first touch electrodes and the conductive vent pattern are formed in the same film layer. The touch display device according to item 1 of the scope of patent application, wherein the conductive vent pattern is grounded. The touch display device according to item 7 of the scope of patent application, further comprising: an electrostatic protection circuit surrounding the first touch electrodes and the touch traces, wherein the conductive vent pattern and the electrostatic protection circuit are electrically connected. Sexual connection. The touch display device according to item 1 of the patent application scope, wherein the opposite substrate has an outer surface facing away from the display medium, and the first touch electrode and the conductive vent pattern are disposed on the opposite substrate. The outer surface. The touch display device according to item 1 of the patent application scope, wherein the opposite substrate has an inner surface facing the display medium, and the first touch electrode and the conductive vent pattern are disposed on the opposite substrate. The inner surface. The touch display device according to item 1 of the scope of patent application, wherein the opposite substrate has a recess, and the recess overlaps the driving unit and the conductive vent pattern. The touch display device according to item 1 of the scope of patent application, wherein the driving unit includes a gate driving circuit integrated with the pixel array substrate. A method for reducing signal interference, comprising: providing a touch display device, the touch display device comprising a pixel array substrate, a driver arranged on the pixel array substrate and providing a display signal to the pixel array substrate A unit, a pair of opposing substrates disposed on the pixel array substrate, a display medium disposed between the pixel array substrate and the opposite substrate, and a plurality of first contacts disposed on the opposite substrate A control electrode and a plurality of touch traces arranged on the opposite substrate and electrically connected to the first touch electrodes, wherein the touch traces have a touch signal; and a conductive vent pattern covers the The driving unit is located between the touch traces and the drive unit to reduce mutual interference between the display signal and the touch signal; and an insulating layer covers the conductive vent pattern, wherein the touch traces It is disposed on the insulating layer, the insulating layer further covers the first touch electrodes and has a plurality of perforations exposing the first touch electrodes, and the touch traces pass through the perforations and the first Touch electrode Connection.