ARRAY SUBSTRATE, IN-CELL TOUCH SCREEN, AND DISPLAY DEVICE

• US 20180260059A1
• Filed: 11/02/2017
• Published: 09/13/2018
• Est. Priority Date: 03/07/2017
• Status: Abandoned Application

• Current Assignee: BOE Technology Group Co., Ltd., Ordos Yuansheng Optoelectronics Co., Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Ordos Yuansheng Optoelectronics Co., Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: MA, Mingchao
• Application Number:
  US15/801,863
• Publication Number:
  US 20180260059A1
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 1/13685 Top gates
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G02F 2202/104 poly-Si
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires
• CPC Class Codes: H01L 27/1222 with a particular composition, shape or crystalline structure of the active layer
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H01L 29/78675 with normal-type structure, e.g. with top gate

Abstract

An array substrate, an in-cell touch screen, and a display device are provided. The array substrate includes: gate lines and data lines crossing each other; an array of pixels defined by the gate lines and the data lines, wherein a pixel electrode arranged in each pixel is connected with the gate line and the data line through a thin film transistor; and a plurality of touch electrodes arranged in an array, each of the touch electrodes being connected with the data line through a via-hole, wherein the touch electrodes are transparent electrodes; and wherein the data line is configured to output either a touch signal or a display signal at a time, wherein the display signal is transmitted to the pixel electrode through the thin film transistor, and the touch signal is transmitted to the touch electrode through the via-hole.

Claims

1. An array substrate, comprising:

gate lines and data lines crossing each other;

an array of pixels defined by the gate lines and the data lines, wherein a pixel electrode arranged in each pixel is connected with the gate line and the data line through a thin film transistor; and

a plurality of touch electrodes arranged in an array, each of the touch electrodes being connected with the data line through a via-hole, wherein the touch electrodes are transparent electrodes;

wherein the data line is configured to output either a touch signal or a display signal at a time, wherein the display signal is transmitted to the pixel electrode through the thin film transistor, and the touch signal is transmitted to the touch electrode through the via-hole.

2. The array substrate according to claim 1, wherein the plurality of touch electrodes are arranged in the extension direction of each data line, the touch electrodes are located above the data line, and positive projections of the touch electrodes onto the data line overlap with the data line.

3. The array substrate according to claim 1, wherein the array substrate further comprises a driver IC, wherein the driver IC is electrically connected with the data lines, and is configured to control the data lines to output a touch signal or a display signal.

4. The array substrate according to claim 1, wherein the transparent electrodes are made of transparent ITO.

5. The array substrate according to claim 2, wherein the thin-film transistor is structured with a top gate.

6. The array substrate according to claim 5, wherein the array substrate comprises an underlying substrate, and a poly-silicon layer, a first insulation layer, a first metal layer, a second insulation layer, a second metal layer, a third insulation layer, the touch electrodes, a fourth insulation layer, and the pixel electrodes formed successively, wherein the first metal layer is used for forming the gate lines, the second metal layer is used for forming the data lines, the plurality of touch electrodes are arranged in the extension direction of the data lines, and the touch electrodes are connected with the second metal layer through the via-holes.

7. The array substrate according to claim 6, wherein the touch electrodes are designed hollow at their parts overlapping with positive projections of the pixel electrodes.

8. The array substrate according to claim 6, wherein the touch electrodes are designed hollow at their parts overlapping with positive projections of the data lines except their connections with the via-holes.

9. An in-cell touch screen, comprising an array substrate, wherein the array substrate comprises:

gate lines and data lines crossing each other;

an array of pixels defined by the gate lines and the data lines, wherein a pixel electrode arranged in each pixel is connected with the gate line and the data line through a thin film transistor; and

a plurality of touch electrodes arranged in an array, each of the touch electrodes being connected with the data line through a via-hole, wherein the touch electrodes are transparent electrodes;

wherein the data line is configured to output either a touch signal or a display signal at a time, wherein the display signal is transmitted to the pixel electrode through the thin film transistor, and the touch signal is transmitted to the touch electrode through the via-hole.

10. A display device, comprising an in-cell touch screen, wherein the in-cell touch screen comprises an array substrate, and the array substrate comprises:

gate lines and data lines crossing each other;

an array of pixels defined by the gate lines and the data lines, wherein a pixel electrode arranged in each pixel is connected with the gate line and the data line through a thin film transistor; and

a plurality of touch electrodes arranged in an array, each of the touch electrodes being connected with the data line through a via-hole, wherein the touch electrodes are transparent electrodes;

wherein the data line is configured to output either a touch signal or a display signal at a time, wherein the display signal is transmitted to the pixel electrode through the thin film transistor, and the touch signal is transmitted to the touch electrode through the via-hole.