CAPACITIVE TOUCH PANEL, MANUFACTURING METHOD OF CAPACITIVE TOUCH PANEL AND DISPLAY DEVICE

• US 20150153875A1
• Filed: 10/16/2013
• Published: 06/04/2015
• Est. Priority Date: 05/15/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Zhang, Mi
• Granted Patent: US 9,619,089 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 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 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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

Embodiments of the present invention relate to a capacitive touch panel, a manufacturing method of the capacitive touch panel and a display device using this capacitive touch panel. The capacitive touch panel includes a color filter substrate and an array substrate disposed oppositely, the array substrate comprising touch sensing lines and touch scanning lines crossing each other disposed thereon; the color filter substrate is provided with touch sensing auxiliary electrodes over intersections of the touch sensing lines and the touch scanning lines; and the touch sensing auxiliary electrodes are connected with the touch sensing lines.

Claims

1. A capacitive touch panel comprising a color filter substrate and an array substrate disposed oppositely, the array substrate comprising touch sensing lines and touch scanning lines crossing each other disposed thereon;

wherein the color filter substrate is provided with touch sensing auxiliary electrodes over intersections of the touch sensing lines and the touch scanning lines; and

the touch sensing auxiliary electrodes are connected with the touch sensing lines.

2. The capacitive touch panel of claim 1, wherein the touch sensing lines are located above the touch scanning lines;

support posts are formed on the color filter substrate, and the touch sensing auxiliary electrodes are formed on surfaces of both the color filter substrate and the support posts and connected with the touch sensing lines.

3. The capacitive touch panel of claim 1, wherein the array substrate comprises a plurality of pixel units defined by the data lines and the gate lines;

and the gate lines are the touch scanning lines and the data lines are the touch sensing lines.

4. The capacitive touch panel of claim 3, wherein the gate lines, a gate insulating layer and the data lines are disposed in order on the array substrate;

and the touch sensing auxiliary electrodes are connected with the data lines.

5. The capacitive touch panel of claim 3, wherein a passivation layer is further disposed on surfaces of the data lines;

passivation layer via holes corresponding to the support posts in terms of location and profile are formed on the passivation layer and the touch sensing auxiliary electrodes are connected with the data lines through the passivation layer via holes.

6. The capacitive touch panel of claim 2, wherein a black matrix is disposed on the color filter substrate;

the support posts are located in regions corresponding to the black matrix, and the sensing auxiliary electrodes do not extend beyond regions corresponding to the black matrix.

7. The capacitive touch panel of claim 1, wherein the touch sensing auxiliary electrodes are ITO transparent electrodes or IZO transparent electrodes.

8. A method for manufacturing the capacitive touch panel of claim 1, comprising:

forming a color filter layer and a black matrix on a second substrate;

forming support posts in regions corresponding to the black matrix;

forming touch sensing auxiliary electrodes configured to be connected with data lines on the array substrate on surfaces of the black matrix and the support posts.

9. The method for manufacturing the capacitive touch panel of claim 8, further comprising:

forming gate lines and a gate insulating layer on a first substrate;

forming data lines and a passivation layer on the gate insulating layer;

forming passivation layer via holes on the passivation layer over intersections of the gate lines and the data lines;

wherein the support posts formed in regions corresponding to the black matrix correspond to locations of the passivation layer via holes; and

the touch sensing auxiliary electrodes are connected with the data lines through the passivation layer via holes.

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

11. The capacitive touch panel of claim 2, wherein the array substrate comprises a plurality of pixel units defined by the data lines and the gate lines;

and the gate lines are the touch scanning lines and the data lines are the touch sensing lines.

12. The capacitive touch panel of claim 11, wherein the gate lines, a gate insulating layer and the data lines are disposed in order on the array substrate;

and the touch sensing auxiliary electrodes are connected with the data lines.

13. The capacitive touch panel of claim 11, wherein a passivation layer is further disposed on surfaces of the data lines;

passivation layer via holes corresponding to the support posts in terms of location and profile are formed on the passivation layer and the touch sensing auxiliary electrodes are connected with the data lines through the passivation layer via holes.

14. The capacitive touch panel of claim 3, wherein a black matrix is disposed on the color filter substrate;

the support posts are located in regions corresponding to the black matrix, and the sensing auxiliary electrodes do not extend beyond regions corresponding to the black matrix.

15. The capacitive touch panel of claim 2, wherein the touch sensing auxiliary electrodes are ITO transparent electrodes or IZO transparent electrodes.

16. The capacitive touch panel of claim 3, wherein the touch sensing auxiliary electrodes are ITO transparent electrodes or IZO transparent electrodes.