Touch display screen, a manufacturing method thereof and a display device

• US 9,904,392 B2
• Filed: 04/12/2016
• Issued: 02/27/2018
• Est. Priority Date: 06/19/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Liang, Kui, Feng, Bin, Liu, Yao
• Primary Examiner(s): Tugbang, A. Dexter
• Assistant Examiner(s): Kue, Kaying
• Application Number:
  US15/511,588
• Publication Number:
  US 20170285821A1
• Time in Patent Office: 686 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1343 Electrodes reflective electrodes G02F1/133553
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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

This disclosure discloses a touch display screen, a manufacturing method thereof and a display device. The touch display screen comprises: an opposite substrate, an array substrate, and a liquid crystal layer located between the opposite substrate and the array substrate, a side of the opposite substrate facing the liquid crystal layer being provided with a black matrix. The touch display screen further comprises: a first touch electrode, an insulating layer and a second touch electrode arranged in stack successively at a side of the opposite substrate back to the liquid crystal layer. The first touch electrode and the second touch electrode are located within an area corresponding to the black matrix respectively. The first touch electrode comprises a plurality of first touch sub-electrodes distributed along a first direction. The second touch electrode comprises a plurality of second touch sub-electrodes distributed along a second direction perpendicular to the first direction.

Claims

1. A manufacturing method of a touch display screen, comprising:

forming a pattern of a black matrix on an opposite substrate and a pattern on an array substrate respectively, applying an assembling process to the opposite substrate and the array substrate, wherein the manufacturing method further comprises;

prior to applying the assembling process,

forming a pattern of a first touch electrode on another side of the opposite substrate opposites to a side where the black matrix is located;

the first touch electrode being arranged within an area corresponding to the black matrix;

the first touch electrode comprising a plurality of first touch sub-electrodes distributed along a first direction;

forming a pattern of an insulating layer on the first touch electrode;

after applying the assembling process,

forming a pattern of a second touch electrode on the insulating layer through a nano conductive ink process;

the second touch electrode being located within an area of the touch display screen corresponding to the black matrix;

the second touch electrode comprising a plurality of second touch sub-electrodes distributed along a second direction perpendicular to the first direction.

2. The manufacturing method according to claim 1, further comprising:

after forming the pattern of the second touch electrode, forming a pattern of a polarizer on the second touch electrode.

3. The manufacturing method according to claim 1, further comprising:

after forming the pattern of the second touch electrode and prior to forming the pattern of the polarizer, forming a pattern of a protective layer on the second touch electrode.

4. The manufacturing method according to claim 3, wherein a material of the protective layer is PET, PMMA or a polarizing film material.

5. The manufacturing method according to claim 1, wherein a line width of each of the first touch sub-electrodes is less than or equal to a line width of the black matrix.

6. The manufacturing method according to claim 5, wherein the line width of each of the first touch sub-electrodes is 5 microns to 20 microns.

7. The manufacturing method according to claim 1, wherein the first touch electrode is a touch driving electrode, and the second touch electrode is a touch sensing electrode.

8. The manufacturing method according to claim 1, wherein a material of the first touch electrode is a transparent conductive oxide or a metal material.

9. The manufacturing method according to claim 1, wherein a line width of each of the second touch sub-electrodes is less than or equal to a line width of the black matrix.

10. The manufacturing method according to claim 9, wherein the line width of each of the second touch sub-electrodes is 5 microns to 20 microns.

11. The manufacturing method according to claim 1, wherein the first touch electrode is a touch sensing electrode, and the second touch electrode is a touch driving electrode.

12. The manufacturing method according to claim 1, wherein a material of the second touch electrode is a nano conductive ink material.