A touch module, its manufacturing method and display device

A technology of touch module and manufacturing method, which is applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of non-crystalline ITO attack, mura, etc., to reduce contact resistance, avoid mura, and low-side resistance Control the effect of product design

CN109062431BActive Publication Date: 2021-10-01BOE TECH GRP CO LTD +1
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-10-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a touch module, a manufacturing method thereof and a display device. After forming an amorphous first transparent conductive layer and before performing pattern etching of the metal layer, adding In the step of forming the pattern of the first insulating layer on the pattern, the first insulating layer is used to protect the first transparent conductive layer, which can avoid the large-area exposure of the amorphous low square resistance first transparent conductive layer to the APC etching solution, resulting in the first A problem of non-uniform erosion of the transparent conductive layer, avoiding the increase of the square resistance of the first transparent conductive layer and the defect of mura. In addition, the pattern of the first insulating layer is designed to dig holes at the bridges between the touch electrodes and the bridges between the touch electrodes and the overlapping terminals, so that APC can be used to attack the low square resistance of the first transparent conductive layer 0. Features, erode the bridge into a spherical surface, increase the overlapping area, reduce the contact resistance of the bridge, and realize the design of touch products with low square resistance on flexible substrates.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the field of display technology, in particular to a touch module, its manufacturing method and a display device. Background technique

[0002] At present, in order to improve the electrical characteristics of touch in flexible touch screens, it is necessary to form amorphous indium tin oxide on flexible substrates, which is unstable in film quality and is susceptible to advanced process control (APC, Advanced Process Control) of flexible metal The attack of the etchant in the middle causes the increase of the square resistance of ITO, the uneven erosion of ITO, the uneven thickness of the ITO film, and the uneven brightness (Mura) of the appearance of the product. Contents of the invention

[0003] In view of this, the embodiment of the present invention provides a touch module, its manufacturing method and display device, which are used to solve the problem of mura caused by amorphous ITO in the existing flexible tou...

Examples

Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The shapes and sizes of the components in the drawings do not reflect the real scale, but are only intended to schematically illustrate the content of the present invention.

[0034] At present, the flexible touch screens on the market are matched with organic electroluminescent display panels (OLED, Organic Light Emitting), and generally use polyethylene terephthalate (PET, Polyethyleneterephthalate) or optical plastics with thin...