Color filter substrate, method for manufacturing the same and touch-type liquid crystal display panel

• US 9,329,730 B2
• Filed: 06/01/2012
• Issued: 05/03/2016
• Est. Priority Date: 06/03/2011
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: Wang, Haisheng
• Primary Examiner(s): CHIEN, LUCY P
• Application Number:
  US13/486,297
• Publication Number:
  US 20120307185A1
• Time in Patent Office: 1,432 Days
• Field of Search: 349/12, 345/174, 345/175
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• 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
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.

Abstract

The embodiments of the present disclosure provide a color filter substrate, a method for manufacturing the same, and a touch type liquid crystal display panel capable of improving the performance of the touch type liquid crystal display panel. The color filter substrate comprises: a base substrate; a driving electrode disposed on a lower surface of the base substrate; a sensing electrode disposed on an upper surface of the base substrate; the driving electrode and the sensing electrode form a touch sensing capacitor with the base substrate as a dielectric layer.

Claims

1. A color filter substrate, comprising:

a base substrate;

a driving electrode disposed on a lower surface of the base substrate;

a sensing electrode disposed on an upper surface of the base substrate;

the driving electrode and the sensing electrode form a touch sensing capacitor with the base substrate as a dielectric layer;

wherein

the driving electrode comprises a metal electrode part and a transparent electrode part that are sequentially disposed;

the metal electrode part is disposed on the transparent electrode part or under the transparent electrode part; and

the projection of the metal electrode part on the substrate is within the projection region of the black matrix on the substrate.

2. The color filter substrate according to claim 1, further comprising a black matrix and color pixel units disposed on the lower surface of the base substrate, and

wherein the black matrix and the color pixel units are disposed on the lower surface of the base substrate, and the driving electrode is disposed on the black matrix and the color pixel units;

or

the driving electrode is disposed on the lower surface of the base substrate, and the black matrix and the color pixel unit are disposed on the driving electrode.

3. The color filter substrate according to claim 1, further comprising a polarizer sheet on an upper surface side of the base substrate, and

wherein the polarizer sheet is disposed on the upper surface of the base substrate, and the sensing electrode is disposed on the polarizer sheet;

or

the sensing electrode is disposed on the upper surface of the base substrate, the polarizer sheet is disposed on the sensing electrode, and a passivation layer is disposed between the sensing electrode and the polarizer sheet.

4. The color filter substrate according to claim 1, wherein the driving electrode comprises at least two strip-shaped electrodes, the sensing electrode comprises at least two strip-shaped electrodes, and the projection of the strip-shaped electrodes of the driving electrode on the substrate is intersect with the projection of the strip-shaped electrodes of the sensing electrode on the base substrate.

5. The color filter substrate according to claim 2, wherein the driving electrode comprises at least two strip-shaped electrodes, the sensing electrode comprises at least two strip-shaped electrodes, and the projection of the strip-shaped electrodes of the driving electrode on the substrate is intersect with the projection of the strip-shaped electrodes of the sensing electrode on the substrate.

6. The color filter substrate according to claim 1, wherein the driving electrode comprises at least two strip-shaped electrodes, the sensing electrode comprises at least two strip-shaped electrodes, and the projection of the strip-shaped electrodes of the driving electrode on the substrate is intersect with the projection of the strip-shaped electrodes of the sensing electrode on the substrate.

7. The color filter substrate according to claim 1, wherein the driving electrode comprises at least two strip-shaped electrodes, the sensing electrode comprises at least two strip-shaped electrodes, and the projection of the strip-shaped electrodes of the driving electrode on the substrate is intersect with the projection of the strip-shaped electrodes of the sensing electrode on the substrate.

8. The color filter substrate according to claim 3, wherein the driving electrode comprises at least two strip-shaped electrodes, the sensing electrode comprises at least two strip-shaped electrodes, and the projection of the strip-shaped electrodes of the driving electrode on the substrate is intersect with the projection of the strip-shaped electrodes of the sensing electrode on the substrate.

9. The color filter substrate according to claim 4, wherein a distance between center lines of adjacent strip-shaped electrodes of the driving electrode or a distance between center lines of adjacent strip-shaped electrodes of the sensing electrode is 4 mm to 6 mm.

14. A touch type liquid crystal display panel, comprising:

a color filter substrate,

an array substrate assembled with the color filter substrate, and

a liquid crystal layer interposed between the color filter substrate and the array substrate, wherein the color filter substrate is the color filter substrate according to claim 1.

10. A method for manufacturing a color filter substrate, comprising:

providing a base substrate;

forming a driving electrode on a lower surface side of the base substrate; and

forming a sensing electrode on an upper surface side of the base substrate,

wherein the driving electrode and the sensing electrode form a touch sensing capacitor with the base substrate as a dielectric layer;

forming the driving electrode comprises;

depositing a transparent conductive film, forming a transparent electrode part of the driving electrode by a patterning process;

forming a passivation layer on the transparent electrode part;

depositing a metal film on the lower surface of the base substrate on which the transparent electrode part of the driving electrode is formed; and

forming a metal electrode part of the driving electrode by a patterning process;

or

forming the driving electrode comprises;

depositing a metal film and forming a metal electrode part of the driving electrode by a patterning process;

depositing a transparent conductive film on the lower surface of the base substrate on which the metal electrode part of the driving electrode is formed; and

forming a transparent electrode part of the driving electrode by a patterning process.

11. The method according to claim 10, wherein forming the driving electrode on the lower surface side of the base substrate comprises:

forming a black matrix and color pixel units on a lower surface of the base substrate and forming the driving electrode on the lower surface on which the black matrix and the color pixel unit are formed;

or

forming the driving electrode on the upper surface of the base substrate and forming a black matrix and color pixel units on the upper surface on which the driving electrode is formed.

12. The method according to claim 10, wherein forming the sensing electrode on the upper surface side of the base substrate comprises:

depositing a transparent conductive film on the upper surface of the base substrate and forming the sensing electrode by a patterning process.

13. The method according to claim 10, wherein forming the sensing electrode on the upper surface side of the base substrate comprises:

disposing a polarizer sheet on the upper surface of the base substrate,

depositing a transparent conductive film on the upper surface of the base substrate on which the polarizer sheet is formed, and

forming the sensing electrode by a patterning process.