Array substrate and touch control display panel

Patent metadata

Field	Value
Publication number	US-10691238-B2
Application number	US-201715810787-A
Country	US
Kind code	B2
Filing date	Nov 13, 2017
Priority date	Jun 29, 2017
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

An array substrate and a touch control display panel are provided. The array substrate comprises a display area and a non-display area surrounding the display area; a plurality of touch control electrodes comprising a plurality of first touch control electrodes and a plurality of second touch control electrodes; and a plurality of touch control signal lines. A first touch control electrode is disposed only in the display area. A second touch control electrode includes a first portion disposed in the display area and a second portion disposed in the non-display area. A ratio m between an area of the first portion of the second touch control electrode and an area of the first touch control electrode is configured to be approximately 0.067≤m≤0.65. A touch control electrode is electrically connected to at least one of the plurality of touch control signal lines.

First claim

What is claimed is:

1. An array substrate, comprising:
a display area and a non-display area surrounding the display area, the non-display area including a first non-display area and a second non-display area;
a plurality of touch control electrodes comprising a plurality of first touch control electrodes and a plurality of second touch control electrodes,
wherein:
a first touch control electrode is disposed only in the display area,
the first non-display area is arranged along a first edge of the array substrate and close to the first touch control electrode,
a second touch control electrode includes a first portion disposed in the display area and a second portion disposed in the second non-display area,
the second non-display area is along a second edge of the array substrate,
a distance from a boundary line between the first non-display area and the display area to the first edge of the array substrate is a, a distance from a boundary line between the second non-display area and the display area to the second edge of the array substrate is b, and a<b, and
a ratio m between an area of the first portion of the second touch control electrode and an area of the first touch control electrode is configured to be approximately 0.067≤m≤0.65; and

a plurality of touch control signal lines, wherein a touch control electrode is electrically connected to at least one of the plurality of touch control signal lines.

2. The array substrate according to claim 1 , wherein:
an orthographic projection of the plurality of touch control signal lines on the array substrate is non-overlapped with one or more of the first non-display area and the second non-display area.

3. The array substrate according to claim 1 , further including:
a base substrate; and
a ground wire be disposed in the non-display area,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the ground wire is arranged between an edge of the array substrate and an orthogonal projection of the second touch control electrode.

4. The array substrate according to claim 1 , further including:
a base substrate; and
a ground wire be disposed in the non-display area,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the ground wire overlaps with an orthogonal projection of an edge of the second touch control electrode, and the edge of the second touch control electrode is in the non-display area.

5. The array substrate according to claim 1 , further including:
a base substrate; and
at least one shift register area arranged in the non-display area for disposing a plurality of shift registers disposed,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the second portion of the second touch control electrode at least partially overlaps with an orthogonal projection of the at least one shift register area.

6. The array substrate according to claim 1 , further including:
a base substrate; and
an electrostatic protection device area arranged in the non-display area for disposing a plurality of electrostatic protection devices,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the second portion of the second touch control electrode at least partially overlaps with an orthogonal projection of the electrostatic protection device area.

7. The array substrate according to claim 1 , further including:
a common electrode multiplex as the plurality of touch control electrodes,
wherein the common electrode receives a touch control scanning signal at a touch control stage, and a common voltage signal at a display stage.

8. The array substrate according to claim 7 , further including:
a base substrate; and
a common electrode switcher area arranged in the non-display area for disposing a plurality of signal switchers,
wherein:
a signal switch controls the common electrode to receive the touch control scanning signal at the display stage, and the common voltage signal at the touch control stage, and
when being projected onto the base substrate of the array substrate, an orthogonal projection of the second portion of the second touch control electrode at least partially overlaps with an orthogonal projection of the electrostatic protection device area.

9. The array substrate according to claim 1 , wherein:
a ratio n between an area of any one of the plurality of second touch control electrodes to the area of the first touch control electrode is configured to be approximately 0.32<n<0.85.

10. The array substrate according to claim 1 , wherein:
the second touch control electrode has a first edge disposed in the second non-display area;
the second non-display region has a first edge close to the display area and a second edge far away from the display area; and
the first edge of the second touch control electrode is parallel to the second edge of the second non-display region.

11. A touch control display panel, comprising:
an array substrate, comprising:
a display area and a non-display area surrounding the display area, the non-display area including a first non-display area and a second non-display area;
a plurality of touch control electrodes comprising a plurality of first touch control electrodes and a plurality of second touch control electrodes,
wherein:
a first touch control electrode is disposed only in the display area,
the first non-display area is arranged along a first edge of the array substrate and close to the first touch control electrode,
a second touch control electrode includes a first portion disposed in the display area and a second portion disposed in the second non-display area,
the second non-display area is along a second edge of the array substrate,
a distance from a boundary line between the first non-display area and the display area to the first edge of the array substrate is a, a distance from a boundary line between the second non-display area and the display area to the second edge of the array substrate is b, and a<b, and
a ratio m between an area of the first portion of the second touch control electrode and an area of the first touch control electrode is configured to be approximately 0.067≤m≤0.65; and

a plurality of touch control signal lines, wherein a touch control electrode is electrically connected to at least one of the plurality of touch control signal lines.

12. The touch control display panel according to claim 11 , wherein:
an orthographic projection of the plurality of touch control signal lines on the array substrate is non-overlapped with one or more of the first non-display area and the second non-display area.

13. The touch control display panel according to claim 11 , wherein the array substrate further includes:
a base substrate; and
a ground wire be disposed in the non-display area,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the ground wire is arranged between an edge of the array substrate and an orthogonal projection of the second touch control electrode.

14. The touch control display panel according to claim 11 , wherein the array substrate further includes:
a base substrate; and
a ground wire be disposed in the non-display area,
wherein when being projected onto the base substrate of the array substrate, an orthogonal projection of the ground wire overlaps with an orthogonal projection of an edge of the second touch control electrode, and the edge of the second touch control electrode is in the non-displ

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Cai Shoujin
• Wu Xiaoxiao
• Liu Bingping
• Xu Xiai
• Chen Guozhao

Classifications

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/04186

  Touch location disambiguation · CPC title

• G06F3/04166

  Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184) · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title