Capacitive in-cell touch panel and display device

• US 9,665,203 B2
• Filed: 06/19/2013
• Issued: 05/30/2017
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Xu, Yubo, Hu, Ming, Lim, Byung Cheon, Mu, Suzhen
• Primary Examiner(s): Bolotin, Dmitriy
• Application Number:
  US14/348,723
• Publication Number:
  US 20160188071A1
• Time in Patent Office: 1,441 Days
• Field of Search: 345173, 345174
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• 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 capacitive in-cell touch panel and a display device is provided, which may realize the touch function without introducing new film layers, and includes an array substrate, a gate line, a data line and a common electrode layer are disposed on the array substrate. The common electrode layer includes a plurality of touch drive electrode elements and a plurality of touch sense electrode elements insulated from each other. The touch drive electrode elements include a plurality of touch drive sub-electrodes; the touch sense electrode elements include a plurality of touch sense sub-electrodes. The touch drive sub-electrodes or the touch sense sub-electrodes are bridged to each other along a data line direction, and the touch sense sub-electrodes or the touch drive sub-electrodes are directly connected with each other along a gate line direction; or, the touch drive sub-electrodes or the touch sense sub-electrodes are bridged to each other along the gate line direction, and the touch sense sub-electrodes or the touch drive sub-electrodes are directly connected along the data line direction.

Claims

1. A capacitive in-cell touch panel comprising an array substrate on which a gate line, a data line and a common electrode layer are disposed, wherein,

the common electrode layer comprises a plurality of touch drive electrode elements and a plurality of touch sense electrode elements insulated from each other;

the touch drive electrode elements comprise a plurality of touch drive sub-electrodes, the touch sense electrode elements comprise a plurality of touch sense sub-electrodes;

wherein the touch drive sub-electrodes or the touch sense sub-electrodes are bridged to each other along a data line direction, and the touch sense sub-electrodes or the touch drive sub-electrodes are directly connected with each other along a gate line direction;

or, the touch drive sub-electrodes or the touch sense sub-electrodes are bridged to each other along the gate line direction, and the touch sense sub-electrodes or the touch drive sub-electrodes are directly connected along the data line direction;

wherein at least one gate line functions as a touch scan line during a touch period for applying a touch scan signal to the touch drive electrode elements, when the touch drive sub-electrodes are directly connected with each other along the gate line direction and the touch sense sub-electrodes are bridged to each other along the data line direction.

2. The touch panel of claim 1, wherein the touch panel further comprises a signal connection line, when the touch drive sub-electrodes are directly connected with each other along the gate line direction and the touch sense sub-electrodes are bridged to each other along the data line direction, adjacent touch sense sub-electrodes along the data line direction are bridged to each other via the signal connection line, and the signal connection line is disposed in the same direction as the data line.

3. The touch panel of claim 2, wherein the signal connection line and the data line are disposed in the same layer.

4. The touch panel of claim 1, wherein the touch panel further comprises a signal connection line, when the touch drive sub-electrodes are bridged to each other along the data line direction and the touch sense sub-electrodes are directly connected with each other along the gate line direction, adjacent touch drive sub-electrodes along the data line direction are bridged to each other via the signal connection line, and the signal connection line is disposed in the same direction as the data line.

5. The touch panel of claim 4, wherein the signal connection line and the data line are disposed in the same layer.

6. The touch panel of claim 1, wherein the touch panel further comprises a signal connection line, when the touch drive sub-electrodes are directly connected with each other along the data line direction and the touch sense sub-electrodes are bridged to each other along the gate line direction, adjacent touch sense sub-electrodes along the row direction are bridged to each other via the signal connection line, and the signal connection line is disposed in the same direction as the gate line.

7. The touch panel of claim 6, wherein the signal connection line and the gate line are disposed in the same layer.

8. The touch panel of claim 1, wherein the touch panel further comprises a signal connection line, when the touch drive sub-electrodes are bridged to each other along the gate line direction and the touch sense sub-electrodes are directly connected with each other along the data line direction, adjacent touch drive sub-electrodes along the gate line direction are bridged to each other via the signal connection line, and the signal connection line is disposed in the same direction as the gate line.

9. The touch panel of claim 8, wherein the signal connection line and the gate line are disposed in the same layer.

10. A display device comprising the touch panel of claim 1.

11. The display device of claim 10, wherein a signal connection line is disposed in a region corresponding to blue pixels when the signal connection line and the data line in the touch panel are disposed in the same direction.