TOUCH SUBSTRATE AND TOUCH DISPLAY DEVICE

• US 20180196558A1
• Filed: 08/28/2017
• Published: 07/12/2018
• Est. Priority Date: 01/09/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: WANG, Benlian
• Granted Patent: US 10,452,179 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1343 Electrodes reflective electrodes G02F1/133553
• 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 3/0412 Digitisers structurally integrated in a display
• 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
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch substrate and a touch display device are provided. The touch substrate and the touch display device relate to the field of display technology, and aim to solve the problem that in the touch substrate regions covered with electrode patterns reflect light and regions not covered with electrode patterns do not reflect light, thus causing a visual difference and resulting in a degraded display effect. The touch substrate includes a plurality of electrodes, and at least one of the plurality of electrodes has a hollowed-out structure.

Claims

1. A touch substrate, comprising a plurality of electrodes, at least one of the plurality of electrodes having a hollowed-out structure.

2. The touch substrate according to claim 1, wherein each of the electrodes having the hollowed-out structure comprises a non-hollowed-out portion and a plurality of hollowed-out portions, the non-hollowed-out portion comprises a plurality of body portions, and at least one of the plurality of hollowed-out portions and at least one of the plurality of body portions of at least one of the electrodes having the hollowed-out structure extend in a first direction.

3. The touch substrate according to claim 2, wherein a shape of the hollowed-out portion, a shape of the body portion and a shape of a gap between two adjacent electrodes in the first direction are identical or approximately identical.

4. The touch substrate according to claim 3, wherein a size of the hollowed-out portions, a size of the body portion and a size of the gap between two adjacent electrodes in the first direction are identical or approximately identical.

5. The touch substrate according to claim 2, wherein at least one of the plurality of hollowed-out portions and at least one of the plurality of body portions of at least one of the electrodes having the hollowed-out structure extend in a second direction.

6. The touch substrate according to claim 2, wherein

at least two of the plurality of the electrodes of the touch substrate have a quadrangular structure, and a set of opposite sides of the quadrangular structure extends in the first direction, a remaining set of opposite sides of the quadrangular structure extends in the second direction, and

in at least one of the electrodes having the hollowed-out structure, the plurality of hollowed-out portions and the plurality of body portions extend in the first direction or in the second direction.

7. The touch substrate according to claim 6, wherein at least two of the plurality of electrodes of the touch substrate have a rhombic structure, a rectangular structure or a square structure.

8. The touch substrate according to claim 2, wherein the non-hollowed-out portion further comprises a connecting portion connecting a part of the plurality of body portions.

9. The touch substrate according to claim 8, wherein at least one of the electrodes having the hollowed-out structure comprises two connecting portions, the two connecting portions are located at opposite ends of the plurality of body portions, and the plurality of body portions and each of the connecting portions form a comb structure.

10. The touch substrate according to claim 8, wherein in at least one of the electrodes having the hollowed-out structure, a part of the body portions and a part of the hollowed-out portions are arranged by turns.

11. The touch substrate according to claim 8, wherein sides of the plurality of electrodes of the touch substrate, sides of the plurality of body portions and sides of the connecting portion are straight, wavy or zigzag.

12. The touch substrate according to claim 2, wherein the plurality of electrodes of the touch substrate comprises driving electrode blocks and sensing electrode blocks, the driving electrode blocks and the sensing electrode blocks are arranged by turns in the first direction and the second direction, at least one of the driving electrode blocks has a hollowed-out structure, and at least one of the sensing electrode blocks has a hollowed-out structure.

13. The touch substrate according to claim 12, wherein each of the driving electrode blocks and each of the sensing electrode blocks have the hollowed-out structure, a hollowed-out portion and a body portion of each of the driving electrode blocks extend in the first direction, and a hollowed-out portion and a body portion of each of the sensing electrode blocks extend in the second direction;

or

the hollowed-out portion and the body portion of each of the driving electrode blocks extend in the second direction, and the hollowed-out portion and the body portion of each of the sensing electrode blocks extend in the first direction.

14. The touch substrate according to claim 12, wherein each of the driving electrode blocks and each of the sensing electrode blocks have the hollowed-out structure, a hollowed-out portion and a body portion of each of the driving electrode blocks and a hollowed-out portion and a body portion of each of the sensing electrode blocks extend in the first direction;

or

each of the driving electrode blocks and each of the sensing electrode blocks have the hollowed-out structure, and the hollowed-out portion and the body portion of each of the driving electrode blocks and the hollowed-out portion and the body portion of each of the sensing electrode blocks extend in the second direction.

15. A touch display device, comprising a touch substrate, the touch substrate comprising a plurality of electrodes, and at least one of the plurality of electrodes having a hollowed-out structure.

16. The touch display device according to claim 15, wherein each of the electrodes having the hollowed-out structure comprises a non-hollowed-out portion and a plurality of hollowed-out portions, the non-hollowed-out portion comprises a plurality of body portions, at least one of the plurality of hollowed-out portions and at least one of the plurality of body portions of at least one of the electrodes having the hollowed-out structure extend in a first direction.

17. The touch display device according to claim 16, wherein a shape of the hollowed-out portions, a shape of the body portions and a shape of a gap between two adjacent electrodes in the first direction are identical or approximately identical.

18. The touch display device according to claim 17, wherein a size of the hollowed-out portions, a size of the body portions and a size of the gap between two adjacent electrodes in the first direction are identical or approximately identical.

19. The touch display device according to claim 16, wherein at least one of the plurality of hollowed-out portions and at least one of the plurality of body portions of at least one of the electrodes having the hollowed-out structure extend in a second direction.

20. The touch display device according to claim 16, wherein at least two of the plurality of the electrodes of the touch substrate have a quadrangular structure, and a set of opposite sides the quadrangular structure extends in the first direction, a remaining set of opposite sides of the quadrangular structure extends in the second direction, and

in at least one of the electrodes having the hollowed-out structure, the plurality of hollowed-out portions and the plurality of body portions extend in the first direction or in the second direction.