TOUCH SUBSTRATE AND FABRICATING METHOD THEREOF, AND TOUCH DISPLAY APPARATUS

• US 20160062518A1
• Filed: 11/14/2014
• Published: 03/03/2016
• Est. Priority Date: 08/29/2014
• Status: Abandoned Application

• Current Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: HU, Ming, DING, Xianlin
• Application Number:
  US14/770,622
• Publication Number:
  US 20160062518A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch substrate, a fabricating method of a touch substrate and a touch display apparatus are disclosed. The touch substrate includes a first electrode layer and a second electrode layer which are arranged on a base substrate; the first electrode layer includes a plurality of first electrodes, the second electrode layer includes a plurality of second electrodes, each of the first electrodes includes a plurality of first electrode units and first connecting portions connected between every two adjacent first electrode units, each of the second electrodes includes a plurality of second electrode units and second connecting portions connected between every two adjacent second electrode units, and the first connecting portions and the second connecting portions are insulated and intersected with each other. The first electrode units are transparent electrode blocks, and the second electrode units are wire gauze electrode blocks.

Claims

1. A touch substrate, comprising a first electrode layer and a second electrode layer which are arranged on a base substrate, the first electrode layer including a plurality of first electrodes, the second electrode layer including a plurality of second electrodes, each of the first electrodes including a plurality of first electrode units and first connecting portions connected between every two adjacent first electrode units, each of the second electrodes including a plurality of second electrode units and second connecting portions connected between every two adjacent second electrode units, and the first connecting portions and the second connecting portions being insulated and intersected, wherein,

the first electrode units are transparent electrode blocks, and the second electrode units are wire gauze electrode blocks.

2. The touch substrate according to claim 1, wherein the wire gauze electrode blocks each includes a plurality of first metal wires extending along a first direction and a plurality of second metal wires extending along a second direction, and the plurality of first metal wires and the plurality of second metal wires are intersected to form a latticed structure.

3. The touch substrate according to claim 1, wherein the first electrodes are drive electrodes, and the second electrodes are sensing electrodes.

4. The touch substrate according to claim 3, wherein the first electrodes extend along a width direction of the base substrate, and the second electrodes extend along a length direction of the base substrate.

5. The touch substrate according to claim 1, wherein a material for fabricating the wire gauze electrode blocks includes copper or aluminum.

6. The touch substrate according to claim 1, wherein a material for fabricating the transparent electrode blocks includes indium tin oxide.

7. The touch substrate according to claim 1, wherein a transparent insulating layer is arranged between the first electrode layer and the second electrode layer.

8. The touch substrate according to claim 1, wherein the touch substrate further comprises a transparent protective layer arranged above the first electrode layer and the second electrode layer.

17. A touch display apparatus, comprising a display panel and the touch substrate according to claim 1.

18. The touch display apparatus according to claim 17, wherein the display panel includes an array substrate and an opposed substrate arranged opposite to the array substrate, and the base substrate of the touch substrate serves as a base substrate of the opposed substrate.

19. The touch display apparatus according to claim 17, wherein the wire gauze electrode blocks each includes a plurality of first metal wires extending along a first direction and a plurality of second metal wires extending along a second direction, and the plurality of first metal wires and the plurality of second metal wires are intersected to form a latticed structure.

20. The touch display apparatus according to claim 17, wherein the first electrodes are drive electrodes, and the second electrodes are sensing electrodes.

9. A fabricating method of a touch substrate, comprising:

providing a base substrate;

forming a first electrode layer comprising a plurality of first electrodes and a second electrode layer comprising a plurality of second electrodes on the base substrate, wherein,

a process of forming each of the first electrodes includes;

forming a plurality of first electrode units sequentially arranged and forming first connecting portions connected between every two adjacent first electrode units;

a process of forming the second electrodes includes;

forming a plurality of second electrode units sequentially arranged and forming second connecting portions connected between every two adjacent second electrode units, the first connecting portions and the second connecting portions being intersected with each other, the first electrode units being transparent electrode blocks, and the second electrode units being wire gauze electrode blocks.

10. The fabricating method of the touch substrate according to claim 9, wherein forming of the second electrode units comprises:

forming a plurality of first metal wires extending along a first direction and a plurality of second metal wires extending along a second direction, the plurality of first metal wires and the plurality of second metal wires being intersected with each other to form a latticed structure.

11. The fabricating method of the touch substrate according to claim 9, wherein the first electrodes are drive electrodes, and the second electrodes are sensing electrodes.

12. The fabricating method of the touch substrate according to claim 11, wherein the first electrodes extend along a width direction of the base substrate, and the second electrodes extend along a length direction of the base substrate.

13. The fabricating method of the touch substrate according to claim 9, wherein a material for fabricating the wire gauze electrode blocks includes copper or aluminum.

14. The fabricating method of the touch substrate according to claim 9, wherein a material for fabricating the transparent electrode blocks includes indium tin oxide.

15. The fabricating method of the touch substrate according to claim 9, further comprising:

forming a transparent insulating layer between the first electrode layer and the second electrode layer.

16. The fabricating method of the touch substrate according to claim 9, further comprising:

forming a transparent protective layer on the base substrate where the first electrode layer and the second electrode layer are formed.