TOUCH SCREEN, COLOR FILTER SUBSTRATE AND MANUFACTURING METHOD THEREOF

• US 20110063239A1
• Filed: 09/10/2010
• Published: 03/17/2011
• Est. Priority Date: 09/11/2009
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: CHEN, Xu, XIE, Zhenyu, LIU, Xiang
• Granted Patent: US 9,134,872 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0414 using force sensing means to determine a position
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

A touch screen, a color filter substrate and a manufacture method thereof are provided in the embodiment of the invention. The touch screen comprises a substrate; a plurality of first signal lines and a plurality of second signal lines forming on the substrate and intersecting with each other to define a plurality of touch regions; a plurality of sensing electrodes, each of the sensing electrodes being connected between one first signal line and one second signal line. Charges are generated on at least one of the sensing electrodes when the sensing electrode is pressed, so that detecting signals for determining coordinates of a touch point are generated on the first signal line and the second signal line that correspond to the sensing electrode.

Claims

1. A touch screen, comprising:

a substrate;

a plurality of first signal lines and a plurality of second signal lines forming on the substrate and intersecting with each other to define a plurality of touch regions;

a plurality of sensing electrodes, each of the sensing electrodes being connected between one first signal line and one second signal line,

wherein charges are generated on at least one of the sensing electrodes when the sensing electrode is pressed, so that detecting signals for determining coordinates of a touch point are generated on the first signal line and the second signal line that correspond to the sensing electrode.

2. The touch screen according to claim 1, wherein each of the first signal lines has an integral and continuous structure, each of the second signal lines has a separate and discontinuous structure, each of the sensing electrodes is formed in an overlapping region of the corresponding first signal line and the corresponding second signal line and provided between the corresponding first signal line and the corresponding second signal line in a thickness direction of the touch screen, each of the second signal lines comprises first segments each formed between two adjacent first signal lines and second segments formed on corresponding sensing electrodes, the first and second segments of the second signal line adjacent to each other are connected by connection bars.

3. The touch screen according to claim 2, wherein an insulating film is formed on the second signal lines, a first via hole, a second via hole and a third via hole are provided in the insulating film for a pair of the first and second segments of one second signal line, the first via hole and the second via hole are respectively provided on both end portions of the first segment of the pair, the third via hole is provided on the second segment of the pair, the connection bar for the pair is formed on the insulating layer so that the first and second segments of the pair are connected with each other by the connection bar through the first via hole, the second via hole and the third via hole.

4. The touch screen according to claim 1, wherein the first signal lines and the second signal lines both have an integral and continuous structure, each of the sensing electrodes is formed in an overlapping region of the corresponding first signal line and the corresponding second signal line and provided between the corresponding first signal line and the corresponding second signal line in a thickness direction of the touch screen.

5. The touch screen according to claim 4, wherein the width of the sensing electrodes is larger than that of the first signal lines.

6. The touch screen according to claim 1, wherein the first signal lines and the second signal lines both have an integral and continuous structure, each of the sensing electrodes is formed on the entirety of one corresponding first signal line.

7. The touch screen according to claim 6, wherein the width of the sensing electrode is larger than that of the first signal lines.

8. A color filter substrate, comprising:

a touch structural layer comprising;

a substrate;

a plurality of first signal lines and a plurality of second signal lines forming on the substrate and intersecting with each other to define a plurality of touch regions;

a plurality of sensing electrodes, each of the sensing electrodes being connected between one first signal line and one second signal line, wherein charges are generated on at least one of the sensing electrodes when the sensing electrode is pressed, so that detecting signals for determining coordinates of a touch point are generated on the first signal line and the second signal line that correspond to the sensing electrode; and

a color filter structural layer formed on the touch structural layer.

9. The color filter substrate according to claim 8, wherein the color filter structural layer comprises a color resin pattern formed in each of the touch regions defined by the first and second signal lines.

10. The color filter substrate according to claim 9, wherein the color filter structural layer further comprises a planarization film formed on the color resin pattern.

11. The color filter substrate according to claim 10, wherein the color filter structural layer further comprises a common electrode formed on the planarization film.

12. The color filter substrate according to claim 8, wherein each of the sensing electrodes is formed in an overlapping region of the corresponding first signal line and the corresponding second signal line and is provided between the corresponding first signal line and the corresponding second signal line in a thickness direction of the touch screen.

13. A method of manufacturing a touch screen, comprising forming a touch structural layer, which comprises:

Step 1 of forming a plurality of first signal lines and a plurality of sensing electrodes on a substrate, wherein each of the sensing electrodes is connected with one first signal line; and

Step 2 of forming a plurality of second signal lines, wherein each of the second signal lines is connected with corresponding sensing electrodes and intersects with the first signal lines to define a plurality of touch regions.

14. The method of manufacture the touch screen according to claim 13, wherein each of the first signal lines has an integral and continuous structure, each of the second signal lines has a separate and discontinuous structure, each of the sensing electrodes is formed in an overlapping region of one first signal line and one second signal line and is provided between the first signal line and the second signal line in a thickness direction of the touch screen, each of the second signal lines comprises first segments each formed between two adjacent first signal lines and second segments formed on corresponding sensing electrodes, the first and second segments of the second signal line adjacent to each other are connected by connection bars.

15. The method of manufacture the touch screen according to claim 14, further comprising forming an insulating film on the second signal lines, and forming a first via hole, a second via hole and a third via hole in the insulating film for a pair of the first and second segments of one second signal line,

wherein the first via hole and the second via hole are respectively provided on both end portions of the first segment of the pair, the third via hole is provided on the second segment of the pair, the connection bar for the pair is formed on the insulating layer so that the first and second segments of the pair are connected with each other by the connection bar through the first via hole, the second via hole and the third via hole.

16. The method of manufacture the touch screen according to claim 13, wherein in the Step 2, a process line is simultaneously formed on one first signal line during the forming of the second signal lines, the process line has a separate and discontinuous structure and end portions thereof are provided on corresponding sensing electrodes.

17. The method of manufacture the touch screen according to claim 13, wherein the first signal lines and the second signal lines both have an integral and continuous structure, each of the sensing electrodes is formed in an overlapping region of one first signal line and one second signal line and provided between the first signal line and the second signal line in a thickness direction of the touch screen.

18. The method of manufacture the touch screen according to claim 13, wherein the first signal lines and the second signal lines both have an integral and continuous structure, and each of the sensing electrode is formed on the entirety of one corresponding first signal line.

19. The method of manufacture the touch screen according to claim 13, further comprising forming a color filter structural layer on the touch structural layer.

20. The method of manufacture the touch screen according to claim 19, wherein forming the color filter structural layer on the touch structural layer comprises:

forming a color resin layer on the touch structural layer;

forming a planarization film on the color resin layer; and

forming a common electrode on the planarization film.