Touch panel having insulation and light blocking layer on the sides of touch electrodes and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10613663-B2
Application number	US-201816029514-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jan 3, 2018
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

The present disclosure provides a touch panel and a manufacturing method for the same, and a touch display device. The touch panel includes a substrate, a touch layer and a first insulation and light blocking layer. The touch layer is disposed above the substrate, and includes a touch electrode and an electrode lead wire electrically connected with the touch electrode. The first insulation and light blocking layer are disposed above the touch layer, and are located at sides of the touch electrode and sides of the electrode lead wire.

First claim

What is claimed is:

1. A touch panel comprising:
a substrate;
a touch layer disposed above the substrate, the touch layer comprises a touch electrode and an electrode lead wire electrically connected with the touch electrode;
a first insulation and light blocking layer disposed above the touch layer, the first insulation and light blocking layer being located at sides of the touch electrode and sides of the electrode lead wire; and
a second insulation and light blocking layer disposed above the touch layer, the second insulation and light blocking layer being distributed on an upper surface of the touch electrode with a predetermined density, wherein the predetermined density is a density that enables a difference between a first light transmittance of an area where the touch electrode is located and a second light transmittance of an area where the electrode lead wire is located to be less than a critical value.

2. The touch panel according to claim 1 , wherein the first insulation and light blocking layer cover an entire side of the touch electrode and an entire side of the electrode lead wire.

3. The touch panel according to claim 1 , wherein a material of each of the first insulation and light blocking layer and the second insulation and light blocking layer is a light-absorption material.

4. The touch panel according to claim 1 , wherein a material of each of the first insulation and light blocking layer and the second insulation and light blocking layer is a black matrix material.

5. The touch panel according to claim 1 , wherein the touch electrode comprises a touch drive electrode and a touch inductive electrode, and the touch drive electrode and the touch inductive electrode are disposed at a same layer.

6. A manufacturing method for a touch panel, comprising:
forming a touch layer above a substrate, the touch layer comprises a touch electrode and an electrode lead wire electrically connected with the touch electrode;
forming a first insulation and light blocking layer above the touch layer and at sides of the touch electrode and the electrode lead wire; and
forming a second insulation and light blocking layer on an upper surface of the touch electrode with a predetermined density, wherein forming the second insulation and light blocking layer with the predetermined density comprises:
forming a plurality of reference insulation and light blocking layers with different densities on the upper surface of the touch electrode;
collecting a first light transmittance of an area where the touch electrode is located and a second light transmittance of an area where the electrode lead wire is located corresponding to the plurality of reference insulation and light blocking layers with the different densities; and
selecting a density of one of the plurality reference insulation and light blocking layers, in which a difference between the first transmittance and the second light transmittance is less than a critical value, from light transmittance data corresponding to the plurality of reference insulation and light blocking layers with the different densities as the predetermined density.

7. The manufacturing method according to claim 6 , wherein each of the first insulation and light blocking layer and the second insulation and light blocking layer is made from a light-absorption material.

8. A touch display device, comprising:
a touch panel, wherein the touch panel comprises:
a substrate;
a touch layer disposed above the substrate, the touch layer comprises a touch electrode and an electrode lead wire electrically connected with the touch electrode;
a first insulation and light blocking layer disposed above the touch layer, the first insulation and light blocking layer being located at sides of the touch electrode and sides of the electrode lead wire; and
a second insulation and light blocking layer disposed above the touch layer, the second insulation and light blocking layer being distributed on an upper surface of the touch electrode with a predetermined density, wherein the predetermined density is a density that enables a difference between a first light transmittance of an area where the touch electrode is located and a second light transmittance of an area where the electrode lead wire is located to be less than a critical value.

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Zhou Gang
• Yang Xiaofei
• Jia dongwang
• Wu Chuan
• Liu Tingliang
• Jiang ni

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04103

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

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title