JP2015206830A - display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which: when a division area of a common electrode is located on a source line, a leakage electric field from the source line affects a liquid crystal layer through the division area of the common electrode.SOLUTION: A display device includes an array substrate and an opposing substrate. The array substrate includes a scanning signal wiring layer, a video signal wiring layer, an auxiliary wiring layer, a first insulating layer, a second insulating layer, a common electrode layer arranged below the auxiliary wiring layer via the first insulating layer, and a pixel electrode layer arranged above the auxiliary wiring layer via the second insulating layer. The auxiliary wiring layer is arranged at a position to cover the video signal wiring layer in plan view. The common electrode layer is divided in a second direction on the video signal wiring layer.

Description

  The present disclosure relates to a display device, and can be applied to a display device having an in-cell touch panel, for example.

In recent years, a liquid crystal display device for mobile use has introduced a capacitive touch panel as an input function mainly for smartphones. Furthermore, this capacitive touch panel is being promoted to be in-cell that incorporates its function in the liquid crystal display device.
As disclosed in International Publication No. 2012/073792 (Patent Document 1), the common electrode (common electrode) serves as a drive electrode and a detection electrode for an in-cell touch panel, and thus the common electrode is separated into a plurality of common electrodes. The separation region of the common electrode is formed to extend in the row direction (scanning line extending direction) and / or the column direction (signal line extending direction) on the color pixel boundary. Further, a slit is provided in the common electrode, and the slit (elongated hole) is formed to extend in the row direction and / or the column direction on the color pixel boundary.

International Publication No. 2012/073792

When the separation region of the common electrode as in Patent Document 1 is positioned on the signal line, a leakage electric field from the signal line affects the liquid crystal layer through the separation region of the common electrode. For this reason, in the pixels adjacent to the separation region of the common electrode, a desired display may not be possible due to the influence of the electric field from the signal line, and particularly when the assembly displacement between the counter substrate and the array substrate occurs, It looks as a streak.
Other problems and novel features will become apparent from the description of the present disclosure and the accompanying drawings.

The outline of a representative one of the present disclosure will be briefly described as follows.
(1) The display device includes a first substrate and a second substrate. The array substrate includes a first signal wiring layer extending in a first direction, a second signal wiring layer extending in a second direction different from the first direction, and the second signal wiring. A pixel electrode layer disposed above the layer, a common electrode layer disposed above the pixel electrode layer, and a wiring layer disposed so as to be in contact with the common electrode layer. The common electrode layer is arranged at a position covering the second signal wiring layer in plan view. The wiring layer is arranged at a position covering the second signal wiring layer in plan view. The common electrode layer is divided in the second direction.
(2) The display device includes a first substrate and a second substrate. The first substrate includes a first signal wiring layer extending in a first direction, a second signal wiring layer extending in a second direction different from the first direction, and the second signal wiring layer. A first wiring layer extending in a direction, a first insulating layer, a second insulating layer, and a common electrode disposed below the first wiring layer via the first insulating layer And a pixel electrode layer disposed above the first wiring layer via the second insulating layer. The first wiring layer is arranged at a position covering the second signal wiring layer in plan view. The common electrode layer is divided in the second direction on the second signal wiring layer.

It is a top view which shows the structure of the display apparatus which concerns on an Example and a comparative example. It is a side view which shows the structure of the display apparatus which concerns on an Example and a comparative example. It is a top view for demonstrating the structure of the display apparatus which concerns on a comparative example. It is sectional drawing in the A-A 'line of FIG. FIG. 3 is a plan view for explaining the structure of the display device according to the first embodiment. It is an enlarged view of the location of the broken line C of FIG. It is sectional drawing in the A-A 'line of FIG. 6 is a plan view for explaining the structure of a display device according to Example 2. FIG. It is an enlarged view of the location of the broken line C of FIG. It is sectional drawing in the A-A 'line of FIG. It is sectional drawing in the array substrate periphery part.

  Hereinafter, examples and comparative examples will be described with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate modifications while maintaining the gist of the invention are naturally included in the scope of the present invention. In addition, the drawings may be schematically represented with respect to the width, thickness, shape, and the like of each part in comparison with actual aspects for the sake of clarity of explanation, but are merely examples, and the interpretation of the present invention is not limited. It is not limited. In addition, in the present specification and each drawing, elements similar to those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description may be omitted as appropriate.

First, the contents common to the technology (hereinafter referred to as a comparative example), Example 1 and Example 2 examined prior to the present disclosure will be described with reference to FIGS. 1 and 2.
FIG. 1 is a plan view showing a configuration of a display device according to an example and a comparative example. FIG. 2 is a side view illustrating the configuration of the display device according to the example and the comparative example. The liquid crystal display devices 100, 100A, and 100B according to the comparative example, the first example, and the second example have an in-cell type touch panel function, and the common electrode layer also functions as a drive electrode layer of the touch panel.
The display devices 100, 100A, and 100B include the array substrates 10, 10A, and 10B, the counter substrate 20, the liquid crystal layer 30, the backlight 41, the polarizing plate 42, the control circuit 43, the touch IC 45, and cables 49a, 49b, and 49c. The display devices 100, 100A, and 100B are vertically long (the length in the Y direction is larger than the length in the X direction). An LCD scanning circuit 46, a common electrode selection circuit (COM selection circuit) 47, and a signal line selection circuit 48 are formed of TFTs on the array substrates 10, 10A, and 10B. Further, on the array substrates 10, 10A, 10B, a drive circuit 44 made of a semiconductor integrated circuit (IC) such as a CMOS is mounted by COG (Chip on Glass). The drive circuit 44 is connected to a control circuit 43 constituted by an IC through a cable 49a. A plurality of detection electrode wiring layers 24 extending in the X direction are formed on the upper surface (opposite side of the liquid crystal layer 30) of the counter substrate 20, and the detection electrode wiring layers 24 are mounted on the cable 49b via the cable 49b. Connected to a touch IC 45. The cable 49b is connected to the control circuit 43. The backlight 41 is connected to the control circuit 43 via a cable 49c. The polarizing plate 42 is disposed between the backlight 41 and the array substrates 10, 10 </ b> A, and 10 </ b> B and on the upper surface of the counter substrate 20.
The common electrode wiring layer 14 that also functions as the drive electrode wiring layer of the touch panel extends in the Y direction, is divided in the X direction and is periodically arranged, and the detection electrode wiring layer 24 extends in the X direction. A plurality are arranged in the Y direction. Since the common electrode wiring layer (the driving electrode wiring layer of the touch panel) extends in the Y direction, the driving electrode wiring layer of the touch panel does not intersect with the source wiring layer. Therefore, it is possible to suppress an increase in the load on the drive electrode of the touch panel.
The liquid crystal display devices 100, 100A, and 100B according to the comparative example, the first embodiment, and the second embodiment have basically the same configuration except for the structure of the array substrates 10, 10A, and 10B.

Next, a comparative example will be described with reference to FIGS.
FIG. 3 is a plan view for explaining the structure of a display device according to a comparative example. 4 is a cross-sectional view taken along line AA ′ of FIG.
The display device 100 according to the comparative example includes red (R), green (G), blue (B), and white (W) vertical sub-pixels, each of RGB and RGW as one pixel, and RGB pixels and RGW. Pixels are arranged alternately. Each of B and W is half the number of pixels of R or G. The display device 100 includes an array substrate 10, a counter substrate 20, and a liquid crystal layer 30 disposed between the array substrate 10 and the counter substrate 20.
In the array substrate 10, the common electrode layer 14 is disposed on the signal wiring layer 12 via the planarization film 13. A pixel electrode layer 17 is disposed on the common electrode layer 14 via an insulating layer 16. The common electrode layer 14 extends in a direction parallel to the signal wiring layer 12 (Y direction), is divided in the X direction and is periodically arranged, and is in contact with the common electrode layer 14 on the signal wiring layer 12. The auxiliary wiring layer 15 is arranged in a form. In other words, the auxiliary wiring layer 15 is disposed between the different color subpixels. However, in order not to short-circuit the divided common electrode layers 14, the auxiliary wiring layer 15 is not disposed at the division position (divided region) 18 of the common electrode layer 14. The common electrode layer 14 and the pixel electrode layer 17 are formed of a light-transmitting conductive film such as ITO (Indium Tin Oxide), and the auxiliary wiring layer 15 and the signal wiring layer 12 are formed of a light shielding conductive film (low resistance conductive film, metal film). Has been. The auxiliary wiring layer 15 is provided in order to reduce the resistance of the common electrode layer 14.
The counter substrate 20 includes a black matrix (light shielding layer) 22 and R, G, B, and W color filters (colored layers) 23. The color filter 23 is repeatedly arranged in the order of R, G, B, R, G, and W in the row direction (X direction). Further, R and G of the color filter 23 are arranged in the same color in the column direction (Y direction), and B and W are arranged alternately. The color filter 23 has a stripe shape (rectangular shape) in which the length in the X direction is shorter than the length in the Y direction in plan view.
As described above, in the display device 100, since the divided region 18 is located on the signal wiring layer 12, the leakage electric field from the signal wiring layer 12 through the divided region 18 affects the liquid crystal layer 30. For this reason, the sub-pixel adjacent to the divided region 18 may not be able to perform a desired display due to the influence of the electric field from the signal wiring layer 12, and particularly when the assembly displacement between the counter substrate 20 and the array substrate 10 occurs. Appears as streaks.
Therefore, in the display device according to the embodiment, a shield layer is provided on the signal wiring layer 12 so that the leakage electric field from the signal wiring layer 12 does not affect the liquid crystal layer 30. It is preferable to use a wiring layer whose potential is fixed as the shield layer.

  In the embodiments described below, an FFS (Fringe Field Switching) type liquid crystal display panel will be described as an example, but the present invention is not limited thereto. The present invention can also be applied to a liquid crystal display panel with a horizontal electric field such as an IPS (In-Plane-Switching) method.

A first embodiment (embodiment 1) in which a shield layer is provided on a signal wiring layer will be described with reference to FIGS.
FIG. 5 is a plan view for explaining the structure of the display device according to the first embodiment. FIG. 6 is an enlarged view of a portion indicated by a broken line C in FIG. FIG. 7 is a cross-sectional view taken along the line AA ′ of FIG.
The display device 100A according to the first embodiment has the same pixel configuration and arrangement as the display device 100 according to the comparative example. That is, the structure of the counter substrate 20 is the same. The display device 100A includes an array substrate 10A, a counter substrate 20, and a liquid crystal layer 30 disposed between the array substrate 10A and the counter substrate 20. Note that R, G, and B vertical stripe-shaped subpixels may be provided, and RGB may be one pixel. That is, the color filter 23 may be repeatedly arranged in the order of R, G, and B in the row direction (X direction), and the same color may be arranged in the column direction (Y direction) of the color filter 23.
In the array substrate 10A, the pixel electrode layer 17A is disposed on the signal wiring layer (video signal wiring layer, second signal wiring layer) 12 via the planarization film 13. A common electrode layer 14A is disposed on the pixel electrode layer 17A via the insulating layer 16. The common electrode layer 14 </ b> A extends in a direction (Y direction) parallel to the signal wiring layer 12, and is divided and periodically arranged in the X direction. The scanning wiring layer (scanning signal wiring layer, first signal wiring layer) 11 extends in the X direction. The divided region 18A of the common electrode 14A is disposed at a position where the signal wiring layer 12 is not disposed and across the scanning wiring layer 11. A slit is formed in the common electrode layer 14A at the opening of the subpixel. The signal wiring layer 12 is covered with a common electrode layer 14A. An auxiliary wiring layer (first wiring layer) 15A is disposed on the signal wiring layer 12 in contact with the common electrode layer 14A. In other words, the auxiliary wiring layer 15A is disposed between the different color subpixels. The auxiliary wiring layer 15 </ b> A is disposed so as to be covered with the light shielding layer 22. On the scanning wiring layer 11, there is a common electrode 14A. The divided region 18A is disposed at a position where the auxiliary wiring layer 15A is not disposed and across the scanning wiring layer 11. The divided regions 18A are arranged so as to be covered with the light shielding layer 22. The common electrode layer 14A and the pixel electrode layer 17A are formed of a light-transmitting conductive film such as ITO (Indium Tin Oxide), and the auxiliary wiring layer 15A and the signal wiring layer 12 are formed of a metal film (light-shielding conductive film).

As described above, since the common electrode layer 14A is disposed on the signal wiring layer 12 in the display device 100A, the leakage electric field from the signal wiring layer 12 can be shielded by the common electrode layer 14A. Thereby, it can prevent that the division area 18 like the display apparatus which concerns on a comparative example looks like a stripe.
Note that the auxiliary wiring layer 15A is not necessarily required to shield the leakage electric field from the signal wiring layer 12. However, when the auxiliary wiring layer 15A is formed of a light-shielding film, it is possible to reduce viewing angle color mixing that occurs when the counter substrate 20 and the array substrate 10 are misaligned in the high-definition panel. When the auxiliary wiring layer 15A is formed of a low resistance conductive film, the resistance of the common electrode layer 14A can be reduced.

The outline of the first embodiment will be briefly described as follows.
(1) The display device includes an array substrate, a counter substrate, and a liquid crystal layer disposed between the array substrate and the counter substrate. The array substrate is disposed in a scanning signal wiring layer extending in a first direction, a video signal wiring layer extending in a second direction different from the first direction, and an upper layer than the video signal wiring layer A pixel electrode layer and a common electrode layer disposed above the pixel electrode layer. The common electrode layer is arranged at a position covering the video signal wiring layer in plan view, and the common electrode layer is divided in the second direction.
(2) In the display device of the above (1), the portion where the common electrode layer is divided is set to a position crossing the scanning signal wiring layer between any adjacent video signal wiring layers.
(3) In the display device of (1), the display device includes an auxiliary wiring layer disposed so as to be in contact with the common electrode layer, and the auxiliary wiring layer is disposed at a position covering the video signal wiring layer in a plan view. To be done.
(4) In the display device according to (3), a portion where the common electrode layer is divided is set to a position where the auxiliary wiring layer is not disposed.
(5) In the display device of (3), the auxiliary wiring layer is a light-shielding conductive film.
(6) In the display device according to (1), the common electrode layer is disposed at a position covering the scanning signal wiring layer in a plan view.
(7) In the display device of (1), the counter substrate includes a light shielding layer and a colored layer. The light shielding layer is arranged at a position covering the auxiliary wiring layer in plan view.
(8) In the display device according to (7), the light shielding layer is arranged at a position covering a portion where the common electrode layer is divided in a plan view.
(9) In the display device of (1), the pixel electrode and the common electrode wiring layer are transparent conductive films.
(10) In the display device of (1), the counter substrate includes a detection electrode wiring layer extending in the first direction. The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel.

(11) The display device includes a first substrate and a second substrate. The array substrate includes a first signal wiring layer extending in a first direction, a second signal wiring layer extending in a second direction different from the first direction, and the second signal wiring. A pixel electrode layer disposed above the layer, a common electrode layer disposed above the pixel electrode layer, and a first wiring layer disposed so as to be in contact with the common electrode layer, Prepare. The common electrode layer is arranged at a position covering the second signal wiring layer in plan view. The first wiring layer is arranged at a position covering the second signal wiring layer in plan view. The common electrode layer is divided in the second direction.
(12) In the display device of the above (11), the portion where the common electrode layer is divided is set to a position where the first wiring layer is not disposed.
(13) In the display device of (11), the common electrode layer is disposed at a position covering the first signal wiring layer in plan view.
(14) In the display device of (11), the second substrate includes a light shielding layer. The light shielding layer is arranged at a position covering the wiring layer in plan view.
(15) In the display device of (11), the first wiring layer is arranged between the different color sub-pixels in plan view.
(16) In the display device of (11), the pixel electrode and the common electrode wiring layer are transparent conductive films. The first wiring layer is a light-shielding conductive film.
(17) In the display device of (11), the second substrate includes a detection electrode wiring layer extending in the first direction. The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel.
(18) In the display device of (11), the first signal wiring layer is a scanning signal wiring layer. The second signal wiring layer is a video signal wiring layer.
(19) The display device according to (11), further including a liquid crystal layer disposed between the first substrate and the second substrate.

A second embodiment (embodiment 2) in which a shield layer is provided on the signal wiring layer will be described with reference to FIGS.
FIG. 8 is a plan view for explaining the structure of the display device according to the second embodiment. FIG. 9 is an enlarged view of a portion indicated by a broken line C in FIG. 10 is a cross-sectional view taken along line AA ′ of FIG. FIG. 11 is a cross-sectional view of the periphery of the array substrate.
The display device 100B according to the second embodiment has the same pixel configuration and arrangement as the display device according to the comparative example. That is, the structure of the counter substrate 20 is the same. The display device 100B includes an array substrate (first substrate) 10B, a counter substrate (second substrate) 20, and a liquid crystal layer 30 disposed between the array substrate 10B and the counter substrate 20. Note that R, G, and B vertical stripe-shaped subpixels may be provided, and RGB may be one pixel. That is, the color filter 23 may be repeatedly arranged in the order of R, G, and B in the row direction (X direction), and the same color may be arranged in the column direction (Y direction) of the color filter 23.
In the array substrate 10B, a common electrode layer 14 is disposed on a signal wiring layer (video signal wiring layer, second signal wiring layer) 12 with a planarizing film 13 interposed therebetween. An auxiliary wiring layer (first wiring layer) 15 is disposed on the common electrode layer 14 via an insulating layer (first insulating layer) 16a. A pixel electrode layer 17 is disposed on the auxiliary wiring layer 15 via an insulating layer (second insulating layer) 16b. The common electrode layer 14 extends in a direction parallel to the signal wiring layer 12 (Y direction), and is divided and periodically arranged in the X direction. The scanning wiring layer (scanning signal wiring layer, first signal wiring layer) 11 extends in the X direction. The auxiliary wiring layer 15 extends in a direction parallel to the signal wiring layer 12 (Y direction), and is arranged between the different color sub-pixels. In the high-definition panel, the auxiliary wiring layer 15 serves as a light-shielding layer that prevents viewing angle color mixing that occurs when the counter substrate 20 and the array substrate 10B are misassembled and to reduce the resistance of the common electrode layer 14. . The auxiliary wiring layer 15 is also disposed on the division position (division region) 18 of the common electrode layer 14. The common electrode layer 14 and the pixel electrode layer 17 are formed of a light-transmitting conductive layer such as ITO, and the auxiliary wiring layer 15 and the signal wiring layer 12 are formed of a light shielding conductive layer (low resistance conductive layer, metal layer).
As shown in FIG. 11, in the peripheral region outside the display region of the array substrate 10B, the common electrode layer 14 and the auxiliary wiring layer 15 are connected via a wiring layer (second wiring layer) 17a. The wiring layer 17 a is a wiring in the same layer as the pixel electrode layer 17. The insulating layer 16a and the insulating layer 16b are simultaneously patterned to form the contact hole CH1. Further, the contact hole CH2 is formed by patterning the insulating layer 16b. An ITO film is formed in the contact hole CH1 and the contact hole CH2 and on the upper surface of the insulating layer 16b and patterned to form the pixel electrode layer 17 and the wiring layer 17a.

As described above, since the auxiliary wiring layer 15 is disposed on the divided region 18 of the signal wiring 12 in the display device 100B, a leakage electric field can be shielded from the signal wiring layer 12 to the pixel electrode 17. Thereby, it can prevent that the division area 18 like the display apparatus which concerns on a comparative example looks like a stripe.
Further, unlike the display device according to the comparative example, the auxiliary wiring layer 15 can be disposed on all the signal wirings, so that the viewing angle color mixing that occurs when the counter substrate 20 and the array substrate 10B are misassembled is reduced. can do.

A plurality of insulating films between the common electrode layer 14 and the pixel electrode layer 17 are formed. By simultaneously patterning the plurality of insulating films, the number of film formation increases, but the number of photolithography processes is the same as in the comparative example. Therefore, the load on the manufacturing process can be reduced.
The common electrode layer 14 and the auxiliary wiring layer 15 are connected, for example, at the periphery of the panel outside the display area, so that leakage from the signal wiring layer to the pixel electrode layer can be achieved without providing a contact hole that causes the aperture ratio to decrease in the pixel. The shielding effect of the electric field can be enhanced. Since the auxiliary wiring layer 15 can be connected to the common electrode layer 14, the resistance of the common electrode layer 14 can be reduced.

The outline of the second embodiment will be briefly described as follows.
(1) The display device includes an array substrate, a counter substrate, and a liquid crystal layer disposed between the array substrate and the counter substrate. The array substrate includes a scanning signal wiring layer extending in a first direction, a video signal wiring layer extending in a second direction different from the first direction, and an auxiliary extending in the second direction. A wiring layer, a first insulating layer, a second insulating layer, a common electrode layer disposed below the auxiliary wiring layer via the first insulating layer, and an upper layer than the auxiliary wiring layer And a pixel electrode layer disposed via the second insulating layer. The auxiliary wiring layer is arranged at a position covering the video signal wiring layer in plan view. The common electrode layer is divided in the second direction on the video signal wiring layer.
(2) In the display device of the above (1), the pixel electrode layer is isolated and has the same wiring layer as the pixel electrode layer. The common electrode layer is connected to the auxiliary wiring layer through the wiring layer.
(3) In the display device of (2), the first contact hole penetrating the first insulating layer and the second insulating layer on the common electrode, and the second contact on the auxiliary wiring layer. A second contact hole of the insulating layer. The wiring layer connects the common electrode layer in the first contact hole and the auxiliary wiring layer in the second contact hole.
(4) In the display device of (1), the counter substrate includes a colored layer and a light shielding layer. The light shielding layer is arranged at a position covering the auxiliary wiring layer in plan view.
(5) In the display device of (1), the auxiliary wiring layer is arranged between the different color sub-pixels in plan view.
(6) In the display device of (1), the common electrode wiring layer and the pixel electrode layer are transparent conductive films. The auxiliary wiring layer is a light-shielding conductive film.
(7) In the display device of (1), the counter substrate includes a detection electrode wiring layer extending in the first direction. The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel.

(8) The display device includes a first substrate and a second substrate. The first substrate includes a first signal wiring layer extending in a first direction, a second signal wiring layer extending in a second direction different from the first direction, and the second signal wiring layer. A first wiring layer extending in a direction, a first insulating layer, a second insulating layer, and a common electrode disposed below the first wiring layer via the first insulating layer And a pixel electrode layer disposed above the first wiring layer via the second insulating layer. The first wiring layer is arranged at a position covering the second signal wiring layer in plan view. The common electrode layer is divided in the second direction on the second signal wiring layer.
(9) In the display device according to (8), the pixel electrode layer is isolated from the pixel electrode layer and has the same second wiring layer as the pixel electrode layer. The common electrode layer is connected to the first wiring layer through the second wiring layer.
(10) In the display device according to (9), the first contact hole penetrating the first insulating layer and the second insulating layer on the common electrode, and the first contact hole on the first wiring layer. And a second contact hole of the two insulating layers. The second wiring layer connects the common electrode layer in the first contact hole and the auxiliary wiring layer in the second contact hole.
(11) In the display device of (8), the second substrate includes a light shielding layer and a colored layer. The light shielding layer is arranged at a position covering the first wiring layer in plan view.
(12) In the display device of (8), the first wiring layer is arranged between the different color sub-pixels in plan view.
(13) In the display device of (8), the common electrode wiring layer and the pixel electrode layer are transparent conductive films. The first wiring layer is a light-shielding conductive film.
(14) In the display device of (8), the second substrate includes a detection electrode wiring layer extending in the first direction. The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel.
(15) In the display device of (8), the first signal wiring layer is a scanning signal wiring layer. The second signal wiring layer is a video signal wiring layer.
(16) The display device according to (8), further including a liquid crystal layer disposed between the first substrate and the second substrate.

10, 10A, 10B ... array substrate 20 ... counter substrate 11 ... scanning wiring layer (scanning signal wiring layer, first signal wiring layer)
12: Signal wiring layer (video signal wiring layer, second signal wiring layer)
13: planarization layer 14, 14A ... common electrode layer 15, 15A ... auxiliary wiring layer (first wiring layer)
16 ... Insulating layer 16a ... Insulating layer (first insulating layer)
16b ... Insulating layer (second insulating layer)
17, 17A ... Pixel electrode layer 17a ... Wiring layer (second wiring layer)
18 ... division area (division position)
21 ... Black matrix (shading layer)
22 ... Color filter (colored layer)
24 ... Detection electrode wiring layer 30 ... Liquid crystal layer 41 ... Backlight 42 ... Polarizing plate 43 ... Control circuit 44 ... Drive circuit 45 ... Touch IC
46 ... LCD scanning circuit 47 ... Common electrode selection circuit 48 ... Signal line selection circuits 49a, 49b, 49c ... Cables 100, 100A, 100B ... Display device

Claims (16)

The display device
An array substrate;
A counter substrate;
A liquid crystal layer disposed between the array substrate and the counter substrate;
With
The array substrate is
A scanning signal wiring layer extending in a first direction;
A video signal wiring layer extending in a second direction different from the first direction;
An auxiliary wiring layer extending in the second direction;
A first insulating layer;
A second insulating layer;
A common electrode layer disposed below the auxiliary wiring layer via the first insulating layer;
A pixel electrode layer disposed above the auxiliary wiring layer via the second insulating layer;
With
The auxiliary wiring layer is arranged at a position covering the video signal wiring layer in plan view,
The common electrode layer is divided in the second direction on the video signal wiring layer. The display device according to claim 1.
The pixel electrode layer is isolated and has the same wiring layer as the pixel electrode layer,
The common electrode layer is connected to the auxiliary wiring layer through the wiring layer. The display device according to claim 2.
A first contact hole penetrating the first insulating layer and the second insulating layer on the common electrode;
A second contact hole of the second insulating layer on the auxiliary wiring layer;
Have
The wiring layer connects the common electrode layer in the first contact hole and the auxiliary wiring layer in the second contact hole. The display device according to claim 1.
The counter substrate includes a colored layer and a light shielding layer,
The light shielding layer is arranged at a position covering the auxiliary wiring layer in plan view. The display device according to claim 1.
The auxiliary wiring layer is arranged between the different color sub-pixels in plan view. The display device according to claim 1.
The common electrode wiring layer and the pixel electrode layer are transparent conductive films,
The auxiliary wiring layer is a light-shielding conductive film. The display device according to claim 1.
The counter substrate includes a detection electrode wiring layer extending in the first direction,
The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel. The display device
A first substrate;
A second substrate;
With
The first substrate is
A first signal wiring layer extending in a first direction;
A second signal wiring layer extending in a second direction different from the first direction;
A first wiring layer extending in the second direction;
A first insulating layer;
A second insulating layer;
A common electrode layer disposed below the first wiring layer via the first insulating layer;
A pixel electrode layer disposed above the first wiring layer via the second insulating layer;
With
The first wiring layer is arranged at a position covering the second signal wiring layer in plan view,
The common electrode layer is divided in the second direction on the second signal wiring layer. The display device according to claim 8.
A second wiring layer isolated from the pixel electrode layer and the same layer as the pixel electrode layer;
The common electrode layer is connected to the first wiring layer through the second wiring layer. The display device according to claim 9.
A first contact hole penetrating the first insulating layer and the second insulating layer on the common electrode;
A second contact hole of the second insulating layer on the first wiring layer;
Have
The second wiring layer connects the common electrode layer in the first contact hole and the auxiliary wiring layer in the second contact hole. The display device according to claim 8.
The second substrate includes a light shielding layer and a colored layer,
The light shielding layer is arranged at a position covering the first wiring layer in plan view. The display device according to claim 8.
The first wiring layer is arranged between the different color sub-pixels in plan view. The display device according to claim 8.
The common electrode wiring layer and the pixel electrode layer are transparent conductive films,
The first wiring layer is a light-shielding conductive film. The display device according to claim 8.
The second substrate includes a detection electrode wiring layer extending in the first direction,
The common electrode wiring layer also functions as a drive electrode wiring layer of the in-cell touch panel. The display device according to claim 8.
The first signal wiring layer is a scanning signal wiring layer;
The second signal wiring layer is a video signal wiring layer. The display device according to claim 8, further comprising:
A liquid crystal layer is provided between the first substrate and the second substrate.

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