Touch display panel, display device and driving method thereof

• US 10,037,115 B2
• Filed: 06/30/2016
• Issued: 07/31/2018
• Est. Priority Date: 02/25/2016
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectric Technology Co. Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectric Technology Co. Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: Jiang, Liangliang, Yan, Jie, Guo, Lei
• Primary Examiner(s): Moon, Patrick
• Application Number:
  US15/198,986
• Publication Number:
  US 20170249031A1
• Time in Patent Office: 761 Days
• Field of Search: None
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• 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 3/04166 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 3/0443 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

Abstract

The embodiments of the present invention provide a touch display panel, a display device and a driving method thereof. The touch display panel comprises an array substrate and a counter substrate; the array substrate comprises a first basal substrate and a spacer, the spacer being arranged on a surface of the first basal substrate facing the counter substrate; the spacer comprises a primary spacer and an auxiliary spacer; each auxiliary spacer at least comprises a conductive portion facing the counter substrate; the height of the auxiliary spacer is less than the height of the primary spacer; the counter substrate comprises a second basal substrate and a touch structure, the touch structure is arranged on a surface of the second basal substrate facing the array substrate.

Claims

1. A touch display panel, comprising an array substrate and a counter substrate;

wherein the array substrate comprises a first basal substrate and a spacer;

the spacer is arranged on a surface of the first basal substrate facing the counter substrate;

the spacer comprises a primary spacer and an auxiliary spacer;

the first basal substrate comprises a plurality of thin film transistors;

the primary spacer and the auxiliary spacer correspond to the plurality of thin film transistors one-to-one;

each auxiliary spacer at least comprises a conductive portion facing the counter substrate;

the height of the auxiliary spacer is less than the height of the primary spacer;

wherein the counter substrate comprises a second basal substrate and a touch structure, the touch structure arranged on a surface of the second basal substrate facing the array substrate;

and wherein a coupling capacitance is generated between the auxiliary spacer and the touch structure, and a pressure value can be identified based on a variation degree of the coupling capacitance.

2. The touch display panel according to claim 1, wherein the auxiliary spacer comprises 2˜

10 levels of sub-auxiliary spacers;

a segment difference is between sub-auxiliary spacers of different levels.

3. The touch display panel according to claim 1, wherein a material of the spacer is conductive polymer material or elastic polymer material doped with conductive particles.

4. The touch display panel according to claim 1, wherein the auxiliary spacer comprises an insulating spacer body and a conductive layer arranged on a surface of the spacer body facing the counter substrate.

5. The touch display panel according to claim 4, wherein the array substrate further comprises a pixel electrode and a common electrode;

the conductive layer is arranged on the same layer with the pixel electrode or the common electrode.

6. The touch display panel according to claim 1, wherein the array substrate further comprises a color filter layer arranged on the first basal substrate.

7. The touch display panel according to claim 1, wherein the touch structure comprises a first touch electrode and a second touch electrode, which are crosswise arranged with each other;

wherein the first touch electrode comprises a plurality of first sub-touch electrodes connected with each other directly;

wherein the second touch electrode comprises a plurality of second sub-touch electrodes, adjacent second sub-touch electrodes being connected through a bridge;

wherein the first touch electrode and the second touch electrode are insulated from each other; and

wherein the auxiliary spacer corresponds to the first touch electrode or the second touch electrode.

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

9. The display device according to claim 8, wherein the auxiliary spacer comprises 2˜

10 levels of sub-auxiliary spacers;

a segment difference is between sub-auxiliary spacers of different levels.

10. The display device according to claim 8, wherein a material of the spacer is conductive polymer material or elastic polymer material doped with conductive particles.

11. The display device according to claim 8, wherein the auxiliary spacer comprises an insulating spacer body and a conductive layer arranged on a surface of the spacer body facing the counter substrate.

12. The display device according to claim 11, wherein the array substrate further comprises a pixel electrode and a common electrode;

the conductive layer is arranged on the same layer with the pixel electrode or the common electrode.

13. The display device according to claim 8, wherein the array substrate further comprises a color filter layer arranged on the first basal substrate.

14. The display device according to claim 8, wherein the touch structure comprises a first touch electrode and a second touch electrode, which are crosswise arranged with each other;

wherein the first touch electrode comprises a plurality of first sub-touch electrodes connected with each other directly;

wherein the second touch electrode comprises a plurality of second sub-touch electrodes, adjacent second sub-touch electrodes being connected through a bridge;

wherein the first touch electrode and the second touch electrode are insulated from each other; and

wherein the auxiliary spacer corresponds to the first touch electrode or the second touch electrode.