CAPACITIVE IN-CELL TOUCH PANEL AND DISPLAY DEVICE

• US 20160342236A1
• Filed: 12/10/2014
• Published: 11/24/2016
• Est. Priority Date: 11/20/2014
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: XU, Xiangyang
• Granted Patent: US 9,798,425 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• 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 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• 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
• 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

Disclosed is a capacitive in-cell touch panel, which includes a substrate and a black matrix disposed on the substrate. The capacitive in-cell touch panel further includes a first capacitive touch layer, an insulation layer, and a second capacitive touch layer. The first capacitive touch layer is formed on the black matrix. The insulation layer is formed on the first capacitive touch layer. The second capacitive touch layer is formed on the second capacitive touch layer and is stacked on and intersects the first capacitive touch layer in a grid form. Also disclosed is a display device.

Claims

1. A capacitive in-cell touch panel, comprising a substrate and a black matrix disposed on the substrate, wherein the capacitive in-cell touch panel further comprises a first capacitive touch layer, an insulation layer, and a second capacitive touch layer, the first capacitive touch layer being formed on the black matrix, the insulation layer being formed on the first capacitive touch layer, the second capacitive touch layer being formed on the second capacitive touch layer to be stacked on and intersecting the first capacitive touch layer in a grid form.

2. The capacitive in-cell touch panel as claimed in claim 1, wherein the first capacitive touch layer comprises a first transparent conductive layer and a first touch detection line, the first transparent conductive layer being formed on the black matrix, the first touch detection line being formed on the first transparent conductive layer.

3. The capacitive in-cell touch panel as claimed in claim 2, wherein the second capacitive touch layer comprises a second transparent conductive layer and a second detection line, the second transparent conductive layer being formed on the insulation layer and having an orthogonal projection cast exactly on the black matrix, the second touch detection line being formed on the second transparent conductive layer.

4. The capacitive in-cell touch panel as claimed in claim 3, wherein the insulation layer is set on and covers the first touch detection line and a portion of the first transparent conductive layer not covered by the first touch detection line.

5. The capacitive in-cell touch panel as claimed in claim 3, wherein the first touch detection line and the first transparent conductive layer generate capacitive detection and the second touch detection line and the second transparent conductive layer generate capacitive detection.

6. The capacitive in-cell touch panel as claimed in claim 4, wherein the first touch detection line casts an orthogonal projection on the first transparent conductive layer that is located within an orthogonal projection of the black matrix;

and the second touch detection line casts an orthogonal projection on the second transparent conductive layer that is within an orthogonal projection of the black matrix.

7. The capacitive in-cell touch panel as claimed in claim 6, wherein the first touch detection line extends in a row-wise direction of open areas and the second touch detection line extends in a column-wise direction of the open areas and the first touch detection line and the second touch detection line are stacked on and intersect each other without engaging each other.

8. The capacitive in-cell touch panel as claimed in claim 7, wherein the second touch detection line extends in a row-wise direction of open areas and the first touch detection line extends in a column-wise direction of the open areas and the first touch detection line and the second touch detection line are stacked on and intersect each other without engaging each other.

9. The capacitive in-cell touch panel as claimed in claim 2, wherein the first touch detection line and the second touch detection line are made of metallic materials.

10. The capacitive in-cell touch panel as claimed in claim 3, wherein the first touch detection line and the second touch detection line are made of metallic materials.

11. The capacitive in-cell touch panel as claimed in claim 4, wherein the first touch detection line and the second touch detection line are made of metallic materials.

12. The capacitive in-cell touch panel as claimed in claim 5, wherein the first touch detection line and the second touch detection line are made of metallic materials.

13. A display device, comprising a capacitive in-cell touch panel, the capacitive in-cell touch panel comprising a substrate and a black matrix disposed on the substrate, wherein the capacitive in-cell touch panel further comprises a first capacitive touch layer, an insulation layer, and a second capacitive touch layer, the first capacitive touch layer being formed on the black matrix, the insulation layer being formed on the first capacitive touch layer, the second capacitive touch layer being formed on the second capacitive touch layer to be stacked on and intersecting the first capacitive touch layer in a grid form.

14. The display device as claimed in claim 13, wherein the first capacitive touch layer comprises a first transparent conductive layer and a first touch detection line, the first transparent conductive layer being formed on the black matrix, the first touch detection line being formed on the first transparent conductive layer.

15. The display device as claimed in claim 14, wherein the second capacitive touch layer comprises a second transparent conductive layer and a second detection line, the second transparent conductive layer being formed on the insulation layer and having an orthogonal projection cast exactly on the black matrix, the second touch detection line being formed on the second transparent conductive layer.

16. The display device as claimed in claim 15, wherein the insulation layer is set on and covers the first touch detection line and a portion of the first transparent conductive layer not covered by the first touch detection line.

17. The display device as claimed in claim 16, wherein the first touch detection line and the first transparent conductive layer generate capacitive detection and the second touch detection line and the second transparent conductive layer generate capacitive detection.

18. The display device as claimed in claim 17, wherein the first touch detection line casts an orthogonal projection on the first transparent conductive layer that is located within an orthogonal projection of the black matrix;

and the second touch detection line casts an orthogonal projection on the second transparent conductive layer that is within an orthogonal projection of the black matrix.

19. The display device as claimed in claim 18, wherein the first touch detection line extends in a row-wise direction of open areas and the second touch detection line extends in a column-wise direction of the open areas and the first touch detection line and the second touch detection line are stacked on and intersect each other without engaging each other.

20. The display device as claimed in claim 19, wherein the second touch detection line extends in a row-wise direction of open areas and the first touch detection line extends in a column-wise direction of the open areas and the first touch detection line and the second touch detection line are stacked on and intersect each other without engaging each other.