In-cell touch display panel

Patent metadata

Field	Value
Publication number	US-10606387-B2
Application number	US-201715740696-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Oct 31, 2017
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

The present invention discloses an in-cell touch display panel. The in-cell touch display panel comprises a TFT array substrate and an opposite substrate. A display circuit and a first bonding area are disposed on the TFT array substrate. A display driver chip provides a display driving signal to the display circuit through the first bonding area. A touch electrode layer and a second bonding area are disposed on the opposite substrate. A touch driver chip provides a touch driving signal to the touch electrode layer through the second bonding area. The in-cell touch display panel provided by the present invention disposes the touch structure and its driver chip on the opposite substrate. Manufacturing of the in-cell touch display panel has become easier. And also reduce the interference of the driving signal generated from the touch structure on the display function of the display panel.

First claim

What is claimed is:

1. An in-cell touch display panel, comprising:
a TFT array substrate; and
an opposite substrate, the opposite substrate and the TFT array substrate disposed oppositely;
wherein a display circuit and a first bonding area are disposed on the TFT array substrate, the first bonding area electrically connects with a display driver chip, the display driver chip provides a display driving signal to the display circuit through the first bonding area;
wherein a touch electrode layer and a second bonding area are disposed on the opposite substrate, the second bonding area electrically connects with a touch driver chip, the touch driver chip provides a touch driving signal to the touch electrode layer through the second bonding area;
wherein a display medium and a sealant frame are disposed between the TFT array substrate and the opposite substrate, the sealant frame surrounds the periphery of the display medium;
wherein the first bonding area and the second bonding area are located outside the sealant frame and respectively on opposite sides.

2. The in-cell touch display panel according to claim 1 , wherein the display circuit is located within the range enclosed by the sealant frame, the first bonding area is located outside the range enclosed by the sealant frame, the touch electrode layer is located within the range enclosed by the sealant frame, and the second bonding area is located outside the range enclosed by the sealant frame.

3. The in-cell touch display panel according to claim 2 , wherein the in-cell touch display panel is an Organic Light-Emitting Diode (OLED) display panel, the display medium is an organic light emitting layer, the opposite substrate is a package lid.

4. The in-cell touch display panel according to claim 3 , wherein the display driver chip is electrically connected to the first bonding area through a first flexible circuit board, the touch driver chip is electrically connected to the second bonding area through a second flexible circuit board.

5. The in-cell touch display panel according to claim 3 , wherein the second bonding area is electrically connected to the touch electrode layer by a golden finger.

6. The in-cell touch display panel according to claim 3 , wherein the touch electrode layer comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are insulated from each other and disposed in the same structure layer.

7. The in-cell touch display panel according to claim 3 , wherein the touch electrode layer comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are insulated from each other and disposed in different structural layers.

8. An in-cell touch display panel comprising a TFT array substrate and an opposite substrate, and then the opposite substrate and the TFT array substrate disposed oppositely;
wherein a display circuit and a first bonding area are disposed on the TFT array substrate, the first bonding area electrically connects with a display driver chip, the display driver chip provides a display driving signal to the display circuit through the first bonding area;
wherein a touch electrode layer and a second bonding area are disposed on the opposite substrate, the second bonding area electrically connects with a touch driver chip, the touch driver chip provides a touch driving signal to the touch electrode layer through the second bonding area;
wherein the in-cell touch display panel is a liquid crystal display panel, a display medium is disposed between the TFT array substrate and the opposite substrate, the display medium is a liquid crystal layer, the opposite substrate is a color filter substrate;
wherein a sealant frame are disposed between the TFT array substrate and the opposite substrate, the sealant frame surrounds the periphery of the display medium;
wherein the first bonding area and the second bonding area are located outside the sealant frame and respectively on opposite sides.

9. The in-cell touch display panel according to claim 8 , wherein the display circuit is located within the range enclosed by the sealant frame, the first bonding area is located outside the range enclosed by the sealant frame, the touch electrode layer is located within the range enclosed by the sealant frame, and the second bonding area is located outside the range enclosed by the sealant frame.

10. The in-cell touch display panel according to claim 9 , wherein the display driver chip is electrically connected to the first bonding area through a first flexible circuit board, the touch driver chip is electrically connected to the second bonding area through a second flexible circuit board.

11. The in-cell touch display panel according to claim 9 , wherein the second bonding area is electrically connected to the touch electrode layer by a golden finger.

12. The in-cell touch display panel according to claim 9 , wherein the touch electrode layer comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are insulated from each other and disposed in the same structure layer.

13. The in-cell touch display panel according to claim 9 , wherein the touch electrode layer comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are insulated from each other and disposed in different structural layers.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Tang Yuejun

Classifications

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title