In-cell touch panel and display device

• US 9,372,564 B2
• Filed: 09/13/2013
• Issued: 06/21/2016
• Est. Priority Date: 04/10/2013
• 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: Wang, Haisheng, Dong, Xue, Wang, Lei, Yang, Shengji, Ding, Xiaoliang, Liu, Yingming, Zhao, Weijie, Ren, Tao, Wang, Chunlei, Liu, Hongjuan
• Primary Examiner(s): Pappas, Claire X
• Assistant Examiner(s): STONE, ROBERT M
• Application Number:
  US14/344,236
• Publication Number:
  US 20140306916A1
• Time in Patent Office: 1,012 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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

Abstract

Embodiments of the present invention provide an in-cell touch panel and a display device to decrease the influence of the touch driving electrode in the in-cell touch panel on image display. The in-cell touch panel includes an upper substrate and a lower substrate opposite to each other, and includes a plurality of touch sensing electrodes provided on the upper substrate and a plurality of touch driving electrodes provided on the lower substrate, wherein the touch sensing electrodes are laterally distributed, and the touch driving electrodes are longitudinally distributed; wherein the touch sensing electrodes include one or a plurality of touch sensing sub-electrodes which are parallel to each other and distributed laterally, and the plurality of touch sensing sub-electrodes are in parallel connection therebetween.

Claims

1. An in-cell touch panel, comprising an upper substrate and a lower substrate opposite to each other, wherein the upper substrate is provided with a plurality of touch sensing electrodes, the lower substrate is provided with a plurality of touch driving electrodes, and the touch sensing electrodes are laterally distributed, and the touch driving electrodes are longitudinally distributed;

wherein each of the touch sensing electrodes comprise one or a plurality of touch sensing sub-electrodes which are parallel to each other and distributed laterally, and the plurality of touch sensing sub-electrodes are in parallel connection therebetween

wherein the touch driving electrodes comprise a plurality of longitudinally distributed touch driving sub-electrodes which are in series connection therebetween,

wherein the lower substrate further comprises a plurality of pixel electrodes which are located at a different layer with respect to the touch driving electrodes, the plurality of touch driving sub-electrodes of the touch driving electrodes are in series connection with each other through a connection line provided at the same layer with the pixel electrodes, and the connection line is located in a non-display area between two adjacent columns of pixel electrodes.

2. The touch panel according to claim 1, wherein the lower substrate comprises a plurality of laterally distributed gate lines, and the touch sensing sub-electrodes are located in an area corresponding to the gate lines.

3. The touch panel according to claim 1, wherein the plurality of touch driving sub-electrodes of the touch driving electrodes are in series connection therebetween through a lead located in a peripheral area.

4. The touch panel according to claim 3, wherein the lower substrate further comprises a plurality of pixel electrodes which are located at a different layer with respect to the touch driving electrodes, the plurality of touch driving sub-electrodes of the touch driving electrodes are in series connection with each other through a connection line provided at the same layer with the pixel electrodes, and the connection line is located in a non-display area between two adjacent columns of pixel electrodes.

5. The touch panel according to claim 3, wherein the lower substrate comprises common electrodes, each of the common electrodes comprises a first common electrode and a second common electrode;

and

the first common electrode is a time-sharing driven touch driving electrode, and the second common electrode is an electrode between two adjacent rows of the touch driving sub-electrodes.

6. A display device comprising the touch panel according to claim 1.

7. The touch panel according to claim 1, wherein the lower substrate comprises common electrodes, each of the common electrodes comprises a first common electrode and a second common electrode;

and

the first common electrode is a time-sharing driven touch driving electrode, and the second common electrode is an electrode between two adjacent rows of the touch driving sub-electrodes.

8. The touch panel according to claim 7, wherein the lower substrate further comprises a common electrode line connected with the first common electrode and the second common electrode.

9. The touch panel according to claim 7 wherein the projection of the touch sensing electrodes on the lower substrate is located within the area where the second common electrode is located.

10. The touch panel according to claim 9, wherein the distance between the projection of the touch sensing electrodes on the lower substrate and the touch driving sub-electrodes is 34 μ

m.

11. An in-cell touch panel, comprising an upper substrate and a lower substrate opposite to each other, wherein the upper substrate is provided with a plurality of touch sensing electrodes, the lower substrate is provided with a plurality of touch driving electrodes, and the touch sensing electrodes are laterally distributed, and the touch driving electrodes are longitudinally distributed;

wherein each of the touch sensing electrodes comprise one or a plurality of touch sensing sub-electrodes which are parallel to each other and distributed laterally, and the plurality of touch sensing sub-electrodes are in parallel connection therebetween

wherein the touch driving electrodes comprise a plurality of longitudinally distributed touch driving sub-electrodes which are in series connection therebetween,

wherein the lower substrate comprises common electrodes, each of the common electrodes comprises a first common electrode and a second common electrode; and

the first common electrode is a time-sharing driven touch driving electrode, and the second common electrode is an electrode between two adjacent rows of the touch driving sub-electrodes.

12. The touch panel according to claim 11, wherein the lower substrate further comprises a common electrode line connected with the first common electrode and the second common electrode.

13. The touch panel according to claim 11 wherein the projection of the touch sensing electrodes on the lower substrate is located within the area where the second common electrode is located.

14. The touch panel according to claim 13, wherein the distance between the projection of the touch sensing electrodes on the lower substrate and the touch driving sub-electrodes is 3-7 μ

m.