Touch sensitive device

Patent metadata

Field	Value
Publication number	US-8982088-B2
Application number	US-69090810-A
Country	US
Kind code	B2
Filing date	Jan 20, 2010
Priority date	Apr 15, 2009
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

A touch sensitive device is provided. The device includes a substrate; a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another; a first insulating layer formed on the substrate and covering the plurality of first electrodes; and a plurality of second electrodes formed on the first insulating layer and arranged along a second direction without overlapping one another, wherein the first direction is vertical to the second direction.

First claim

What is claimed is:

1. A touch sensing device, comprising:
a substrate;
a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another;
a first insulating layer formed on the substrate and covering the plurality of first electrodes;
a plurality of second electrodes formed on the first insulating layer and arranged along a second direction without overlapping one another, wherein each of the plurality of second electrodes has a first surface facing away from the first insulating layer and two second surfaces being opposite to each other and connecting the first surface and the first insulating layer; and
a material layer formed on the first insulating layer and enclosing the plurality of second electrodes, wherein the material layer directly contacts with and covers the first surface and the second surfaces of each of the plurality of second electrodes, and the material layer comprises a second insulating layer or an adhesive layer;
wherein the first direction is orthogonal to the second direction, the first electrodes and the second electrodes are configured to sense capacitance variation in respond to a conductor indirectly touching the first electrodes,
wherein a display device is disposed directly on the material layer of the touch sensing device.

2. The touch sensing device as claimed in claim 1 , further comprising:
one or more layer pairs formed on the material layer, wherein when the one layer pair is formed on the material layer, the layer pair comprises a third electrode layer and a third insulating layer formed on the material layer in sequence, and wherein when the layer pairs are formed on the material layer, the layer pairs are formed on the material layer in sequence, and each of the layer pairs comprises a third electrode layer and a third insulating layer formed in sequence from a side adjacent to the material layer to another side away from the material layer; and
another third electrode layer formed on the one or more layer pairs.

3. The touch sensing device as claimed in claim 1 , further comprising the conductor, wherein the first electrodes and the second electrodes are used to sense total capacitance variation according to the conductor indirectly touching the first electrodes.

4. The touch sensing device as claimed in claim 1 , further comprising:
a third electrode layer formed on the material layer, wherein the material layer is the second insulating layer.

5. The touch sensing device as claimed in claim 4 , wherein the second insulating layer and the third electrode layer form an isolating layer.

6. The touch sensing device as claimed in claim 5 , further comprising an adhesive layer formed on the isolating layer.

7. A touch sensing device, comprising:
a substrate;
a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another;
a first insulating layer formed on the substrate and covering the plurality of first electrodes;
a plurality of second electrodes formed on the first insulating layer and arranged along a second direction without overlapping one another, wherein each of the plurality of second electrodes has a first surface facing away from the first insulating layer and two second surfaces being opposite to each other and connecting the first surface and the first insulating layer;
a material layer formed on the first insulating layer and enclosing the plurality of second electrodes, wherein the material layer directly contacts with and covers the first surface and the second surfaces of each of the plurality of second electrodes, and the material layer comprises a second insulating layer or an adhesive layer;
one or more layer pairs formed on the material layer, wherein when the one layer pair is formed on the material layer, the layer pair comprises a third electrode layer and a third insulating layer formed on the material layer in sequence, and wherein when the layer pairs are formed on the material layer, the layer pairs are formed on the material layer in sequence, and each of the layer pairs comprises a third electrode layer and a third insulating layer formed in sequence from a side adjacent to the material layer to another side away from the material layer; and
another third electrode layer formed on the one or more layer pairs,
wherein the first direction is orthogonal to the second direction, the first electrodes and the second electrodes are configured to sense capacitance variation in respond to a conductor indirectly touching the first electrodes.

8. The touch sensing device as claimed in claim 7 , wherein the second insulating layer, the one or more layer pairs, and the another third electrode layers form an isolating layer.

9. The touch sensing device as claimed in claim 8 , further comprising an adhesive layer formed on the isolating layer.

Assignees

• Kung Chen-Pang
• Chen Yu-Jen
• Lin Chen-Wei
• Ind Tech Res Inst

Inventors

• Kung Chen-Pang
• Chen Yu-Jen
• Lin Chen-Wei

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0445 Primary

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

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G09G5/00

  Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) · CPC title

• G06F2203/04103

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