Capacitive touch panel, manufacturing method of capacitive touch panel and display device

• US 9,619,089 B2
• Filed: 10/16/2013
• Issued: 04/11/2017
• 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
• Primary Examiner(s): Siddiqui, Md Saiful A
• Application Number:
  US14/347,091
• Publication Number:
  US 20150153875A1
• Time in Patent Office: 1,273 Days
• 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 support posts and touch sensing auxiliary electrodes, the touch sensing auxiliary electrodes being formed on surfaces of the support posts, both the support posts and the touch sensing auxiliary electrodes are being formed over intersections of the touch sensing lines and the touch scanning lines; and

the touch sensing auxiliary electrodes are directly electrically connected with the touch sensing lines and the touch sensing auxiliary electrodes are electrically insulated from the touch scanning lines,

wherein the touch sensing lines are located above the touch scanning lines; 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.

2. 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.

3. The capacitive touch panel of claim 2, 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.

4. The capacitive touch panel of claim 2, 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 pass nation layer via holes.

5. The capacitive touch panel of claim 1, wherein a black matrix is disposed on the color filter substrate;

and the support posts are located in regions corresponding to the black matrix.

6. The capacitive touch panel of claim 1, wherein the touch sensing auxiliary electrodes are indium tin oxide (ITO) transparent electrodes or indium zinc oxide (IZO) transparent electrodes.

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