Touch substrate having conductive lines and ground conductive pattern between adjacent conductive lines, method for manufacturing the same, and touch panel

Patent metadata

Field	Value
Publication number	US-10795512-B2
Application number	US-201715750638-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jun 30, 2016
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

The present disclosure provides a touch substrate and a method for manufacturing the same, and a touch panel, belonging to the field of touch technology. The touch substrate is divided into a touch area and a wiring area located at a periphery of the touch area, including: a black matrix pattern arranged on the wiring area; a plurality of conductive lines located on the black matrix pattern; and a ground conductive pattern located between two adjacent conductive lines of the plurality conductive lines on the black matrix pattern.

First claim

What is claimed is:

1. A touch substrate, divided into a touch area and a wiring area located at a periphery of the touch area, comprising: a black matrix pattern arranged on the wiring area; a plurality of conductive lines located on the black matrix pattern; and a ground conductive pattern located between two adjacent conductive lines of the plurality conductive lines on the black matrix pattern, wherein a space between the two adjacent conductive lines is less than a threshold value, wherein the threshold value ranges from 30 to 100 micrometers, wherein a space between the ground conductive pattern and any one of the two adjacent conductive lines ranges from 5 to 20 micrometers.

2. The touch substrate according to claim 1 , wherein the two adjacent conductive lines are in parallel with each other, and an extension direction of the ground conductive pattern is parallel to that of the two adjacent conductive lines.

3. The touch substrate according to claim 2 , wherein the ground conductive pattern has a thickness in a direction perpendicular to the extension direction less than 90% of the space between the two adjacent conductive lines.

4. The touch substrate according to claim 3 , wherein the ground conductive pattern has a thickness in a direction perpendicular to the extension direction greater than a half of the space between the two adjacent conductive lines.

5. The touch substrate according to claim 2 , wherein the space between the ground conductive pattern and one of the two adjacent conductive lines is the same as that between the ground conductive pattern and the other of the two adjacent conductive lines.

6. The touch substrate according to claim 1 , wherein the ground conductive pattern is made of a metal.

7. The touch substrate according to claim 1 , further comprising:
a planarization layer covering the conductive lines and the ground conductive pattern.

8. A touch panel, comprising the touch substrate according to claim 1 and a protective structure covering the touch substrate.

9. The touch panel according to claim 8 , further comprising:
a ground point located outside the touch substrate, wherein the protective structure is provided with a via hole, and the ground conductive pattern is electrically connected to the ground point through the via hole.

10. The touch panel according to claim 9 , further comprising:
a conductive lead that passes through the via hole and connects the ground conductive pattern and the ground point.

11. The touch panel according to claim 8 , wherein the protective structure is an anti-splinted film.

12. A method for manufacturing a touch substrate, the touch substrate being divided into a touch area and a wiring area surrounding the touch area, the method comprising:
forming a black matrix pattern on the wiring area;
forming a plurality of conductive lines on the black matrix pattern; and
forming a ground conductive pattern between two adjacent conductive lines of the plurality conductive lines,
wherein a space between the ground conductive pattern and any one of the two adjacent conductive lines ranges from 5 to 20 micrometers.

13. The method according to claim 12 , wherein before the step of forming a black matrix pattern on the wiring area, the method further comprises:
providing a base substrate;
wherein the step of forming a black matrix pattern on the wiring area comprises: forming the black matrix pattern on the wiring area of the base substrate;
wherein before the step of forming a plurality of conductive lines on the black matrix pattern, the method further comprises:
depositing a first transparent conductive layer on the base substrate, patterning the first transparent conductive layer, and forming a bridge for connecting touch electrodes; and
depositing an insulating material layer on the base substrate, patterning the insulating material layer, and forming a pattern of a first insulating layer covering the bridge;
wherein the step of forming a conductive line on the black matrix pattern comprises:
depositing a second transparent conductive layer on the base substrate, patterning the second transparent conductive layer, and forming a pattern of the touch electrodes, the touch electrodes being formed by the conductive lines, and a groove being formed between the two adjacent conductive lines; and
wherein the step of forming a ground conductive pattern between the two adjacent conductive lines comprises:
depositing a metal layer on the base substrate, patterning the metal layer, and forming a peripheral metal line and the ground conductive pattern on the black matrix pattern.

14. The method according to claim 13 , further comprising:
depositing a resin material layer on the base substrate, patterning the resin material layer, and forming a resin protective layer covering an edge area of the touch substrate on the base substrate.

15. The method according to claim 14 , further comprising:
attaching an anti-splinted film on the touch substrate;
hollowing out the anti-splinted film to form a via hole; and
forming a conductive lead that connects a ground point and the ground conductive pattern through the via hole.

16. The method according to claim 13 , wherein the groove has a width ranging from 30 to 100 micrometers.

17. A touch substrate, divided into a touch area and a wiring area located at a periphery of the touch area, comprising:
a black matrix pattern arranged on the wiring area;
a plurality of conductive lines located on the black matrix pattern; and
a ground conductive pattern located between two adjacent conductive lines of the plurality conductive lines on the black matrix pattern,
wherein a space between the ground conductive pattern and any one of the two adjacent conductive lines ranges from 5 to 20 micrometers.

18. The touch substrate according to claim 17 , wherein the two adjacent conductive lines are in parallel with each other, and an extension direction of the ground conductive pattern is parallel to that of the two adjacent conductive lines.

19. The touch substrate according to claim 18 , wherein the ground conductive pattern has a thickness in a direction perpendicular to the extension direction less than 90% of the space between the two adjacent conductive lines.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Xie Xiaodong
• Hu Ming
• Zhang Ming
• He Min
• Tian Jian
• Wang Qingpu

Classifications

• G06F2203/04111

  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 title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0418

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title