Touch control panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10788926-B2
Application number	US-201916250975-A
Country	US
Kind code	B2
Filing date	Jan 17, 2019
Priority date	Mar 29, 2018
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

The present disclosure provides a touch control panel including a first insulating layer, a touch control pattern layer, a second insulating layer and a pattern matching layer. The touch control pattern layer is provided on the first insulating layer, and the touch control pattern layer includes a plurality of driving electrodes laterally arranged, a plurality of detection electrodes longitudinally arranged and a plurality of spacer regions provided therebetween. A second insulating layer is provided on the touch control pattern layer and the second insulating layer forms recessed regions at a position of the spacer regions. A pattern matching layer is provided on the second insulating layer. A material and thickness of the pattern matching layer are the same as those of the touch control pattern layer. An orthographic projection of the pattern matching layer on the second insulating layer coincides with the recessed regions.

First claim

What is claimed is:

1. A touch control panel, comprising:
a first insulating layer;
a touch control pattern layer, provided on the first insulating layer, the touch control pattern layer comprising a plurality of touch control units,
wherein each of the plurality of touch control units comprises a driving electrode and a detecting electrode;
the driving electrodes of the plurality of touch control units extend along a first direction;
the detecting electrodes of the plurality of touch control units extend along a second direction, and
the first direction is perpendicular to the second direction,
wherein the respective detecting electrodes of adjacent ones of the plurality of touch control units are connected by via holes,
and wherein spacer regions are provided between adjacent driving electrodes and detecting electrodes;

a second insulating layer, provided on the touch control pattern layer, wherein the second insulating layer includes recessed regions at corresponding positions of the spacer regions; and
a pattern matching layer, provided on the second insulating layer, wherein a thickness of the pattern matching layer is consistent with a thickness of the touch control pattern layer, and an orthographic projection of the pattern matching layer on the second insulating layer coincides with an orthographic projection of the recessed regions,
wherein a first side wall of the driving electrodes extending along the first direction and forms a first angle with the first insulating layer, the first angle being a first acute angle; and a second side wall of the detecting electrodes extending along the second direction and forms a second angle with the first insulating layer, the second angle being a second acute angle, and
a first side surface of the second insulating layer located away from the touch control pattern layer and located on the first side wall of the driving electrodes and forms the first angle with the first insulating layer, and a second side surface of the second insulating layer located away from the touch control pattern layer and located on the second side wall of the detecting electrodes and forms the second angle with the first insulating layer, the pattern matching layer and the recessed regions of the second insulating layer are completely attached to fill the recessed regions.

2. The touch control panel according to claim 1 , wherein the pattern matching layer is not connected with an electrical signal.

3. The touch control panel according to claim 1 , wherein a material of the pattern matching layer is identical to a material of the touch control pattern layer.

4. The touch control panel according to claim 1 , wherein, the first angle is less than or equal to 65°, and the second angle is less than or equal to 65°.

5. A touch control display device, comprising:
the touch control panel according to claim 1 .

6. A manufacturing method of a touch control panel, comprising:
forming a touch control pattern layer on a first insulating layer, the touch control pattern layer comprising a plurality of touch control units, each of the touch control units comprising a driving electrode and a detecting electrode, the driving electrodes of the plurality of touch control units being laterally arranged, and the detecting electrodes of the plurality of touch control units being longitudinally arranged, wherein the respective detecting electrodes of adjacent one of the plurality of touch control units are connected by via holes, and wherein spacer regions are provided between adjacent driving electrodes and detecting electrodes;
forming a second insulating layer on the touch control pattern layer, wherein the second insulating layer includes recessed regions at corresponding positions of the spacer regions;
forming a pattern matching layer on the second insulating layer, wherein a thickness of the pattern matching layer is consistent with a thickness of the touch control pattern layer, and an orthographic projection of the pattern matching layer on the second insulating layer coincides with an orthographic projection of the recessed regions,
wherein after forming of the touch control pattern layer, the manufacturing method further comprises:
etching a first side wall of the driving electrodes and a second side wall of the detecting electrodes, a first angle is formed between the first side wall extending longitudinally and the first insulating layer, the first angle being a first acute angle and a second angle is formed between the second side wall extending laterally and the first insulating layer, the second angle being a second acute angle,
wherein a first side surface of the second insulating layer located away from the touch control pattern layer and located on the first side wall of the driving electrodes and forms the first angle with the first insulating layer, and a second side surface of the second insulating layer located away from the touch control pattern layer and located on the second side wall of the detecting electrodes and forms the second angle with the first insulating layer, the pattern matching layer and the recessed regions of the second insulating layer are completely attached to fill the recessed regions.

7. The manufacturing method of a touch control panel according to claim 6 , wherein no electrical signal connection is coupled to the pattern matching layer.

8. The manufacturing method of a touch control panel according to claim 6 , wherein a material of the pattern matching layer is the same as a material of the touch control pattern layer.

9. The manufacturing method of a touch control panel according to claim 6 , wherein the first angle is less than or equal to 65°, and the second angle is less than or equal to 65°.

10. The manufacturing method of a touch control panel according to claim 6 , wherein forming the pattern matching layer on the second insulating layer comprises:
forming a matching layer on the second insulating layer by an evaporation process or a sputtering process;
performing a photolithography process on the matching layer to form the pattern matching layer.

11. The manufacturing method of a touch control panel according to claim 6 , wherein forming the pattern matching layer on the second insulating layer comprises:
transferring the pattern matching layer on the second insulating layer by a transfer process.

12. The manufacturing method of a touch control panel according to claim 6 , further comprising:
forming via holes to connect adjacent driving electrodes.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Wang

Classifications

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title