TOUCH STRUCTURE, TOUCH PANEL AND DISPLAY DEVICE

• US 20170277325A1
• Filed: 09/09/2016
• Published: 09/28/2017
• Est. Priority Date: 10/29/2015
• 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: XIE, Xiaodong, HU, Ming, HE, Min, WANG, Jing, ZHANG, Ming
• Application Number:
  US15/508,756
• Publication Number:
  US 20170277325A1
• 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 2203/04103 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
• 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 structure (01), a touch panel and a display device are provided. The touch structure (01) includes a plurality of repeating units (02), each repeating unit including a first touch electrode (10) and a second touch electrode (20) intersecting with and insulated from each other, the first touch electrodes (10) being connected in a bridging manner. A dummy electrode (40) is further provided in a region of each repeating unit not provided with the first touch electrode (10) and the second touch electrode (20). A first trench (301) and a second trench (302) are provided respectively between the dummy electrode (40) and the first touch electrode (10) and between the dummy electrode (40) and the second touch electrode (20); and a third trench (303) is provided between the dummy electrodes (40) located in adjacent repeating units. The dummy electrode (40) includes at least 2 sub-dummy electrodes (401), and a fourth trench (304) is formed between adjacent sub-dummy electrodes (401) located in any one of the dummy electrodes (40). Edges of the first trench (301), the second trench (302), the third trench (303) and the fourth trench (304) all have a plurality of bending points.

Claims

1. A touch structure, comprising a plurality of repeating units, each of the repeating units including a first touch electrode and a second touch electrode intersecting with and insulated from each other, the first touch electrode being connected in a bridging manner;

a dummy electrode being provided in a region of each of the repeating units not provided with the first touch electrode and the second touch electrode;

wherein a first trench and a second trench are provided respectively between the dummy electrode and the first touch electrode and between the dummy electrode and the second touch electrode; and

a third trench is provided between dummy electrodes located in adjacent repeating units;

the dummy electrode includes at least two sub-dummy electrodes, and a fourth trench is formed between adjacent sub-dummy electrodes located in any one of the dummy electrodes;

edges of the first trench, the second trench, the third trench and the fourth trench all have a plurality of bending points.

2. The touch structure according to claim 1, wherein the dummy electrode, the first touch electrode and the second touch electrode are provided in a same layer and made of a same material.

3. The touch structure according to claim 1, wherein the repeating unit includes four dummy electrodes, and adjacent dummy electrodes are symmetrically provided along at least one of the first touch electrode and the second touch electrode.

4. The touch structure according to claim 3, wherein the fourth trench is provided along a diagonal direction of the repeating unit.

5. The touch structure according to claim 4, wherein for two opposite dummy electrodes located on one diagonal line in any one repeating unit, a direction of the fourth trench coincides with the diagonal direction.

6. The touch structure according to claim 5, wherein each dummy electrode includes two fourth trenches;

and one of the fourth trenches has its orthographic projection at least partially coincident with the diagonal line, and the other one of the fourth trenches is close to the second touch electrode.

7. The touch structure according to claim 1, wherein the third trench includes more than five bending points.

8. The touch structure according to claim 1, wherein the second trench includes more than eight bending points.

9. The touch structure according to claim 1, wherein a width of a portion of the first touch electrode intersecting with the second touch electrode is 1.5 to 2.5 times the width of the second touch electrode.

10. The touch structure according to claim 1, wherein a size of each repeating unit in a direction along the first touch electrode is equal to the size of the repeating unit in a direction along the second touch electrode.

11. The touch structure according to claim 10, wherein the size of each repeating unit in the direction along the first touch electrode and the size of the repeating unit in the direction along the second touch electrode are both 3 mm to 8 mm

12. A touch panel, comprising a display panel and the touch structure according to claim 1.

13. The touch panel according to claim 12, wherein the display panel includes an array substrate, a color filter substrate, a liquid crystal layer located between the array substrate and the color filter substrate, an upper polarizer located on a light emergent side of the color filter substrate and a lower polarizer located on a light incident side of the array substrate;

and

the touch structure is provided between the color filter substrate and the upper polarizer.

14. The touch panel according to claim 12, further comprising protective glass;

the touch structure being provided between the protective glass and the display panel, and the touch structure being in contact with the protective glass.

15. The touch panel according to claim 12, further comprising protective glass;

wherein the touch structure is provided on a substrate, and the substrate provided with the touch structure is provided between the protective glass and the display panel.

16. A display device, comprising the touch panel according to claim 12.

17. The touch structure according to claim 1, wherein the fourth trench is provided along a diagonal direction of the repeating unit.

18. The touch structure according to claim 17, wherein for two opposite dummy electrodes located on one diagonal line in any one repeating unit, a direction of the fourth trench coincides with the diagonal direction.

19. The touch structure according to claim 18, wherein each dummy electrode includes two fourth trenches;

and one of the fourth trenches has its orthographic projection at least partially coincident with the diagonal line, and the other one of the fourth trenches is close to the second touch electrode.

20. The touch structure according to claim 19, wherein the third trench includes more than five bending points.