Touch control device

Patent metadata

Field	Value
Publication number	US-10795498-B1
Application number	US-201916541185-A
Country	US
Kind code	B1
Filing date	Aug 15, 2019
Priority date	Jun 27, 2019
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

Disclosed is a touch control device having a substrate, a first touch-sensing electrode layer, a second touch-sensing electrode layer, a first insulating layer, a second insulating layer, and a circuit layer. The substrate includes a first region and a second region. The first and second touch-sensing electrode layers are located in the first region. The first insulating layer is located between the first and second touch-sensing electrode layers. The second insulating layer is disposed on the first insulating layer and the second touch-sensing electrode layer. The first region and a portion of the second region are covered by the second insulating layer. The circuit layer is located in the second region and has a first portion and a second portion. The first portion is in direct contact with the substrate. The second portion partially covers the first or the second touch-sensing electrode layer to form a contact area.

First claim

What is claimed is:

1. A touch control device, comprising:
a substrate comprising a first region and a second region adjacent thereto;
a first touch-sensing electrode layer and a second touch-sensing electrode layer disposed over the substrate and located in the first region;
a first insulating layer located between the first touch-sensing electrode layer and the second touch-sensing electrode layer;
a second insulating layer disposed on the second touch-sensing electrode layer, the second insulating layer completely covering the first region and partially covering the second region; and
a circuit layer located over the substrate and having a first portion and a second portion extending from the first portion, wherein the first portion is in direct contact with the substrate, and the second portion is located in the second region and partially covers the first touch-sensing electrode layer or the second touch-sensing electrode layer to form a contact area.

2. The touch control device of claim 1 , wherein a height difference between the first portion and the second portion of the circuit layer ranges from 0.02-20 μm in a first direction.

3. The touch control device of claim 2 , wherein a first thickness of the first touch-sensing electrode layer ranges from 2˜30 μm in the first direction.

4. The touch control device of claim 2 , wherein a second thickness of the second touch-sensing electrode layer ranges from 1.5˜20 μm in the first direction.

5. The touch control device of claim 1 , further comprising a bottom insulating layer disposed between the first touch-sensing electrode layer and the substrate.

6. The touch control device of claim 1 , wherein both of the first touch-sensing electrode layer and the second touch-sensing electrode layer comprise a plurality of nano-metal wires.

7. The touch control device of claim 1 , wherein both of the first touch-sensing electrode layer and the second touch-sensing electrode layer comprise a photosensitive material.

8. The touch control device of claim 2 , wherein in the second region, the circuit layer and the second touch-sensing electrode layer have a first width and a second width, respectively, in a second direction perpendicular to the first direction, and the first width is smaller than the second width.

9. The touch control device of claim 2 , wherein in the second region, the circuit layer and the second touch-sensing electrode layer respectively have a first width and a second width in a second direction that is perpendicular to the first direction, and the first width is greater than the second width.

10. The touch control device of claim 1 , wherein the second insulating layer comprises a transparent photosensitive material.

Assignees

• Interface Tech Chengdu Co Ltd
• Interface Optoelectronics Shenzhen Co Ltd
• General Interface Solution Ltd

Inventors

• Chang Chih-Peng
• Chen Ping-Yang

Classifications

• G06F3/0446

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

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/04164 Primary

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

• G06F2203/04103

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

• G06F3/041

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