TOUCH SCREEN AND DISPLAY DEVICE

• US 20150253912A1
• Filed: 10/11/2013
• Published: 09/10/2015
• Est. Priority Date: 06/13/2013
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Liu, Yingming, Dong, Xue, Wang, Haisheng, Guo, Jian
• Granted Patent: US 9,448,654 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/16 Constructional details or arrangements
• 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 3/0443 using a single layer of sensing electrodes
• 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

Abstract

The embodiment provides a touch screen and a display device. The touch screen has: a first substrate and a second substrate arranged in opposite to each other, and a touch-driving electrode and a touch-sensing electrode arranged in a crossing manner on the first substrate and the second substrate, a non-flat region is provided at a region of the first substrate on which the touch-sensing electrode is to be formed, and the touch-sensing electrode is arranged on the first substrate in accordance with a shape of the first substrate so as to be formed with a non-flat region; and/or a non-flat region is provided at a region of the second substrate on which the touch-driving electrode is to be formed, and the touch-driving electrode is arranged on the second substrate in accordance with a shape of the second substrate so as to be formed with a non-flat region.

Claims

1. A touch screen, comprising a first substrate and a second substrate arranged in opposite to each other, and a touch-driving electrode and a touch-sensing electrode arranged in a crossing manner on the first substrate and the second substrate, respectively,

wherein a non-flat region is provided at a region of the first substrate on which the touch-sensing electrode is to be formed, and the touch-sensing electrode is arranged on the first substrate in accordance with a shape of the first substrate so as to be formed with a non-flat region corresponding to the non-flat region of the first substrate;

and/or

a non-flat region is provided at a region of the second substrate on which the touch-driving electrode is to be formed, and the touch-driving electrode is arranged on the second substrate in accordance with a shape of the second substrate so as to be formed with a non-flat region corresponding to the non-flat region of the second substrate.

2. The touch screen according to claim 1, wherein the first substrate and the second substrate are different from each other,

the non-flat region of the first substrate is a concave region formed on the first substrate with a flat surface and below a horizontal plane of the surface of the first substrate, and

the touch screen further comprises a black matrix and a color resin layer,

wherein the black matrix is arranged on the first substrate in accordance with the concave region formed on the first substrate so as to be formed with a concave region corresponding to the concave region formed on the first substrate,

the touch-sensing electrode is arranged on the black matrix in accordance with a shape of the black matrix so as to be formed with a concave region corresponding to the concave region of the black matrix,

the color resin layer is arranged above the black matrix, and

a plurality of pixel units distributed in a matrix manner is provided at one side of the second substrate close to the first substrate, and the touch-driving electrode is arranged above the pixel units.

3. The touch screen according to claim 2, further comprising:

a flat layer formed on the color resin layer and a spacer formed on the flat layer.

4. The touch screen according to claim 1, wherein the non-flat region is a concave region;

the concave region is provided at a region corresponding to the touch-sensing electrode, it is a groove-shaped region or a plurality of porous regions arranged along an extending direction of the touch-sensing electrode; and

/or

the concave region is provided at a region corresponding to the touch-driving electrode, it is a groove-shaped region or a plurality of porous regions arranged along an extending direction of the touch-driving electrode.

5. The touch screen according to claim 4, wherein the groove-shaped region corresponding to the touch-sensing electrode has a longitudinal section of a trapezoid, triangle or arc shape along a direction of a short edge of the touch-sensing electrode, and

the groove-shaped region corresponding to the touch-driving electrode has a longitudinal section of a trapezoid, triangle or arc shape along a direction of a short edge of the touch-driving electrode.

6. The touch screen according to claim 5, wherein the groove-shaped region corresponding to the touch-sensing electrode has a longitudinal section of an isosceles trapezoid, isosceles triangle or circle arc shape along a direction of the short edge of the touch-sensing electrode, and

the groove-shaped region corresponding to the touch-driving electrode has a longitudinal section of an isosceles trapezoid, isosceles triangle or circle arc shape along a direction of the short edge of the touch-driving electrode.

7. The touch screen according to claim 4, wherein there is an equal distance between any two adjacent porous regions among the plurality of porous regions corresponding to the touch-driving electrode or the touch-sensing electrode.

8. The touch screen according to claim 2, wherein the touch-sensing electrode is arranged at a region corresponding to the black matrix.

9. The touch screen according to claim 1, wherein a vertically overlapping surface between the touch-driving electrode and the touch-sensing electrode has an area less than a surface area of the touch-sensing electrode.

10. A display device, comprising the touch screen according to claim 1.

11. The display device according to claim 10, wherein the first substrate and the second substrate are different from each other,

the non-flat region of the first substrate is a concave region formed on the first substrate with a flat surface and below a horizontal plane of the surface of the first substrate, and

the touch screen further comprises a black matrix and a color resin layer,

wherein the black matrix is arranged on the first substrate in accordance with the concave region formed on the first substrate so as to be formed with a concave region corresponding to the concave region formed on the first substrate,

the touch-sensing electrode is arranged on the black matrix in accordance with a shape of the black matrix so as to be formed with a concave region corresponding to the concave region of the black matrix,

the color resin layer is arranged above the black matrix, and

a plurality of pixel units distributed in a matrix manner is provided at one side of the second substrate close to the first substrate, and the touch-driving electrode is arranged above the pixel units.

12. The display device according to claim 11, wherein the touch screen further comprises:

a flat layer formed on the color resin layer and a spacer formed on the flat layer.

13. The display device according to claim 10, wherein the non-flat region is a concave region;

the concave region is provided at a region corresponding to the touch-sensing electrode, it is a groove-shaped region or a plurality of porous regions arranged along an extending direction of the touch-sensing electrode; and

/or

the concave region is provided at a region corresponding to the touch-driving electrode, it is a groove-shaped region or a plurality of porous regions arranged along an extending direction of the touch-driving electrode.

14. The display device according to claim 13, wherein the groove-shaped region corresponding to the touch-sensing electrode has a longitudinal section of a trapezoid, triangle or arc shape along a direction of a short edge of the touch-sensing electrode, and

the groove-shaped region corresponding to the touch-driving electrode has a longitudinal section of a trapezoid, triangle or arc shape along a direction of a short edge of the touch-driving electrode.

15. The display device according to claim 14, wherein the groove-shaped region corresponding to the touch-sensing electrode has a longitudinal section of an isosceles trapezoid, isosceles triangle or circle arc shape along a direction of the short edge of the touch-sensing electrode, and

the groove-shaped region corresponding to the touch-driving electrode has a longitudinal section of an isosceles trapezoid, isosceles triangle or circle arc shape along a direction of the short edge of the touch-driving electrode.

16. The display device according to claim 13, wherein there is an equal distance between any two adjacent porous regions among the plurality of porous regions corresponding to the touch-driving electrode or the touch-sensing electrode.

17. The display device according to claim 11, wherein the touch-sensing electrode is arranged at a region corresponding to the black matrix.

18. The display device according to claim 10, wherein a vertically overlapping surface between the touch-driving electrode and the touch-sensing electrode has an area less than a surface area of the touch-sensing electrode.