ARRAY SUBSTRATE AND TOUCH SCREEN WITH HORIZONTAL ELECTRIC FIELD DRIVING MODE

• US 20140184944A1
• Filed: 11/18/2013
• Published: 07/03/2014
• Est. Priority Date: 12/31/2012
• Status: Abandoned Application

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Inventors: MA, Jun, Zhao, Lijun, Yao, Qijun
• Application Number:
  US14/083,321
• Publication Number:
  US 20140184944A1
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/134372 for fringe field switching [FFS] where the common electrode is not patterned
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

An array substrate and a touch screen adopt a horizontal electric field driving mode. The array substrate with the horizontal electric field driving mode comprises a substrate, a plurality of common electrode lines formed on the substrate, and a plurality of gate lines formed on the substrate and a plurality of data lines intersecting the gate lines. The common electrode lines function as sensing electrodes or driving electrodes and the data lines or the gate lines function as the driving electrodes or the sensing electrodes during a touch period. The touch screen with the horizontal electric field driving mode can reduce the number of manufacturing processes, lower the production cost, and meanwhile, reduce the touch noise caused by a liquid crystal layer, thereby increasing the touch sensitivity efficiently.

Claims

1. An array substrate with a horizontal electric field driving mode, comprising:

a substrate;

a plurality of common electrode lines formed on the substrate; and

a plurality of gate lines formed on the substrate and a plurality of data lines intersecting with the gate lines;

wherein, the common electrode lines function as sensing electrodes or driving electrodes and the data lines function as the driving electrodes or the sensing electrodes during a touch period.

2. The array substrate of claim 1, wherein the common electrode lines are arranged perpendicular to the data lines.

3. The array substrate of claim 2, wherein the common electrode lines function as the sensing electrodes and the data lines function as the driving electrodes during the touch period.

4. The array substrate of claim 2, wherein the common electrode lines function as the driving electrodes and the data lines function as the sensing electrodes during the touch period.

5. The array substrate of claim 1, wherein the common electrode lines are arranged perpendicular to the gate lines.

6. The array substrate of claim 5, wherein, the common electrode lines function as the sensing electrodes and the gate lines function as the driving electrodes during the touch period.

7. The array substrate of claim 5, wherein, the common electrode lines function as the driving electrodes and the gate lines function as the sensing electrodes during the touch period.

8. The array substrate of claim 1, wherein each of the common electrode lines has a width in a range from 3 mm to 5 mm.

9. The array substrate of claim 1, further comprising a plurality of pixel rows and a plurality of pixel columns formed by the plurality of data lines and the plurality of gate lines.

10. The array substrate of claim 9, wherein the common electrode lines overlap the pixel rows or the pixel columns.

11. The array substrate of claim 1, wherein a data line and a gate line adjacent to each other defines a pixel region, the pixel region including a pixel electrode.

12. The array substrate of claim 11, wherein the pixel region comprises a plurality of pixel common electrodes connected together.

13. The array substrate of claim 12, wherein the pixel electrode is formed above the pixel common electrodes.

14. The array substrate of claim 12, wherein the pixel electrode is formed below the pixel common electrodes.

15. A touch screen with a horizontal electric field driving mode, comprising:

an array substrate with the horizontal electric field driving mode according to claim 1;

a color filter substrate; and

a liquid crystal layer disposed between the array substrate and the color filter substrate.

16. The touch screen of claim 14, wherein the array substrate comprises a touch surface facing a user.