Array substrate and display apparatus

Patent metadata

Field	Value
Publication number	US-12468201-B2
Application number	US-202418665692-A
Country	US
Kind code	B2
Filing date	May 16, 2024
Priority date	Jun 29, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An array substrate including: a base substrate; a data line on the base substrate and extending in a first direction; and a touch signal line on the base substrate, wherein an extending direction of the touch signal line is the same as an extending direction of the data line; an orthographic projection of the touch signal line on the base substrate at least partially overlaps an orthographic projection of the data line on the base substrate, which is within an orthographic projection of a gap between two touch electrode units adjacent in a second direction on the base substrate, and a size of the data line in the second direction is smaller than a size, in the second direction, of the gap between the two touch electrode units adjacent in the second direction, where the second direction is perpendicular to the first direction.

First claim

What is claimed is:

1 . An array substrate, comprising:
a base substrate; a data line on the base substrate and extending in a first direction; and a touch signal line on the base substrate, wherein an extending direction of the touch signal line is the same as an extending direction of the data line; the data line and the touch signal line are in different layers and insulated from each other, and an orthographic projection of the touch signal line on the base substrate at least partially overlaps an orthographic projection of the data line on the base substrate, wherein the array substrate further comprises a plurality of touch electrode units, each of which is coupled to a corresponding touch signal line; a layer, where the touch electrode unit is located, is on a side of the data line away from the base substrate; an orthographic projection of a gap between two touch electrode units adjacent in a second direction on the base substrate overlaps the orthographic projection of the data line on the base substrate; the second direction is perpendicular to the first direction; and the orthographic projection of the data line on the base substrate is within the orthographic projection of the gap between the two touch electrode units adjacent in the second direction on the base substrate, and a size of the data line in the second direction is smaller than a size, in the second direction, of the gap between the two touch electrode units adjacent in the second direction.

2 . The array substrate according to claim 1 , wherein at the gap between the two touch electrode units adjacent in the second direction, orthographic projections, on the base substrate, of the two touch electrode units adjacent in the second direction and on two sides of the touch signal line in the second direction, each partially overlap the orthographic projection of the touch signal line on the base substrate.

3 . The array substrate according to claim 1 , wherein the touch signal line is on a side of the data line away from the base substrate.

4 . The array substrate according to claim 1 , wherein the touch signal line comprises a main body and a bent connection part, and an orthographic projection of the main body on the base substrate completely covers the orthographic projection of the data line on the base substrate.

5 . The array substrate according to claim 4 , wherein the touch signal line has a center line extending in the first direction; the data line has a center line extending in the first direction; and
an orthographic projection of the center line of the touch signal line on the base substrate completely overlaps an orthographic projection of the center line of the data line on the base substrate.

6 . The array substrate according to claim 1 , wherein a size of the touch signal line in the second direction is greater than the size of the data line in the second direction.

7 . The array substrate according to claim 1 , wherein the layer, where the touch electrode unit is located, is between a layer where the touch signal line is located and a layer where the data line is located.

8 . The array substrate according to claim 1 , wherein an orthographic projection of the touch electrode unit on the base substrate partially overlaps an orthographic projection of the touch signal line on the base substrate.

9 . The array substrate according to claim 2 , wherein at the gap between the two touch electrode units adjacent in the second direction, a length of an overlapping part between the orthographic projection of the touch electrode unit on the base substrate and the orthographic projection of the touch signal line on the base substrate in the second direction is in a range of 1.5 to 3 micrometers.

10 . The array substrate according to claim 1 , wherein the array substrate further comprises an organic insulating layer between a layer where the data line is located and a layer where the touch electrode unit is located.

11 . The array substrate according to claim 10 , wherein the array substrate further comprises a plurality of gate lines, a plurality of the data lines and a plurality of sub-pixels, and
the plurality of gate lines and the plurality of the data lines define a plurality of sub-pixel regions, and the plurality of sub-pixels are correspondingly located in the plurality of sub-pixel regions; and each of the plurality of sub-pixels comprises a pixel electrode and a common electrode.

12 . The array substrate according to claim 11 , wherein the array substrate comprises a plurality of touch sub-regions, and the plurality of touch electrode units are located in the plurality of touch sub-regions in a one-to-one correspondence; each of the plurality of touch sub-region corresponds to multiple sub-pixel regions; and
the common electrodes of the sub-pixels in a same touch sub-region are coupled together, and the coupled common electrodes serve as the touch electrode unit in the touch sub-region.

13 . The array substrate according to claim 12 , wherein the array substrate further comprises a first passivation layer; a layer where the common electrode is located, the first passivation layer, a layer where the touch signal line is located, and a layer where the pixel electrode is located, are sequentially arranged in a direction away from the base substrate; and
the common electrode is coupled to the touch signal line through a first connection via at least penetrating through the first passivation layer.

14 . The array substrate according to claim 13 , wherein the array substrate further comprises a second passivation layer on a side of the layer, where the touch signal line is located, away from the base substrate;
the first connection via comprises a first part and a second part, the first part penetrates through the first passivation layer, the layer where the touch signal line is located and the second passivation layer, exposing at least a part of the common electrode; and the second part penetrates through the second passivation layer, exposing at least a part of the touch signal line; and the array substrate further comprises a first connection pattern, and an orthographic projection of the first connection pattern on the base substrate covers orthographic projections of the first part and the second part of the first connection via on the base substrate, such that the first connection pattern couples the common electrode and the touch signal line together.

15 . The array substrate according to claim 14 , wherein the first connection pattern is in a same layer and is made of a same material as the pixel electrode.

16 . The array substrate according to claim 13 , wherein the sub-pixel further comprises a driving circuit, at least a part of an output electrode of the driving circuit is on a side of the organic insulating layer close to the base substrate; and
the pixel electrode is coupled to the output electrode through a second connection via, and the second connection via penetrates through at least the organic insulating layer, the first passivation layer and the second passivation layer to expose the output electrode of the driving circuit, such that the pixel electrode is coupled to the output electrode.

17 . The array substrate according to claim 16 , wherein the driving circuit comprises a driving transistor; the second connection via comprises a first sub-via and a second sub-via; the first sub-via penetrates through the organic insulating layer, the second sub-via penetrates through the first passivation layer and the second passivation layer, and a

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Xiao
• Yan Yan
• Ma Yu
• Chen Weitao
• Zhang Jiliang

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/136227

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title