Touch device and method for fabricating thereof

Patent metadata

Field	Value
Publication number	US-9977544-B2
Application number	US-201313781752-A
Country	US
Kind code	B2
Filing date	Mar 1, 2013
Priority date	Mar 1, 2012
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present disclosure relates to touch technology, and more particularly to a touch device and a method of fabricating the same. The disclosure provides a touch device comprising a protective cover having a sensing area and a peripheral area surrounding the sensing area; a first decoration layer disposed on the peripheral area; a sensing electrode layer comprising a sensing portion disposed on the sensing area and an extension portion extending from the sensing area to the first decoration layer; a second decoration layer disposed on the first decoration layer; a signal line formed on the second decoration layer and connected to the extension portion of the sensing electrode layer. By the design of the foregoing first and second decoration layers, the broken state or interruption of the sensing electrode layer can be prevented. In addition, the disclosure also provides the fabricating method for the foregoing touch device.

First claim

What is claimed is:

1. A touch device, comprising:
a protective cover having a sensing area and a peripheral area surrounding the sensing area;
a first decoration layer disposed on the peripheral area;
a second decoration layer disposed on the first decoration layer;
a transparent sensing electrode layer comprising a sensing portion disposed on the sensing area and an extension portion extending from the sensing area to the upper surface of the first decoration layer; and
a non-transparent signal line comprising a first portion and a second portion, wherein: the first portion of the non-transparent signal line is overlies the second decoration layer, and the second portion of the non-transparent signal line extends from the first portion of the non-transparent signal line along a lateral side of the second decoration layer to contact the extension portion of the transparent sensing electrode layer on the upper surface of the first decoration layer.

2. The touch device of claim 1 , wherein the second decoration layer is thicker than the first decoration layer.

3. The touch device of claim 1 , wherein the first decoration layer is 2-6 μm thick.

4. The touch device of claim 1 , wherein the first decoration layer and the second decoration layer are made of non-black inks.

5. The touch device of claim 1 , wherein the non-transparent signal line and the transparent sensing electrode layer interface at a location along the lateral side of the second decoration layer.

6. The touch device of claim 1 , further comprising: a third decoration layer disposed between the first portion of the non-transparent signal line and the second decoration layer to mask the first portion of the non-transparent signal line.

7. The touch device of claim 1 , further comprising: a protective layer in contact with an upper surface of the first portion of the non-transparent signal line, a lateral side of the second portion of the non-transparent signal line and an upper surface of the extension portion of the transparent sensing electrode layer.

8. The touch device of claim 1 , wherein:
the sensing portion of the transparent sensing electrode layer comprises a plurality of row-arranged first sensing electrodes and a plurality of column-arranged second sensing electrodes, and
a first sensing electrode of the plurality of row-arranged first sensing electrode is connected through a connecting line to a second sensing electrode of the plurality of the row-arranged first sensing electrodes.

9. The touch device of claim 8 , further comprising:
a jumper line electrically connecting a first sensing electrode of the plurality of the column-arranged second sensing electrodes to a second sensing electrode of the plurality of column-arranged second sensing electrodes; and
an insulating layer disposed between the connecting line and the jumper line to insulate the connecting line from the jumper line.

10. A method of fabricating a touch device, comprising:
forming a first decoration layer on a peripheral area of a protective cover, wherein the peripheral area surrounds a sensing area of the protective cover;
forming a second decoration layer on the first decoration layer;
forming a transparent sensing electrode layer on the protective cover, wherein the transparent sensing electrode layer comprises a sensing portion disposed on the sensing area and an extension portion extending from the sensing area to the upper surface of the first decoration layer; and
forming a non-transparent signal line comprising a first portion and a second portion, wherein; the first portion of the non-transparent signal line is formed over the second decoration layer to overlie the second decoration layer, and the second portion of the non-transparent signal line extends from the first portion of the non-transparent signal line along a lateral side of the second decoration layer to contact the extension portion of the transparent sensing electrode layer on the upper surface of the first decoration layer.

11. The method of fabricating a touch device of claim 10 , further comprising: forming a third decoration layer prior to forming the non-transparent signal line, wherein the third decoration layer masks the first portion of the non-transparent signal line.

12. The method of fabricating a touch device of claim 10 , further comprising: forming a protective layer to cover the second decoration layer and the non-transparent signal line, wherein the protective layer extends along a later side of the second portion of the non-transparent signal line.

13. The method of fabricating a touch device of claim 10 , wherein the sensing portion of the transparent sensing electrode layer comprises a plurality of row-arranged first sensing electrodes and a plurality of column-arranged second sensing electrodes, and a first sensing electrode of the plurality of row-arranged first sensing electrode is connected through a connecting line to second sensing electrodes of the plurality of the row-arranged first sensing electrodes.

14. The method of fabricating a touch device of claim 13 , w further comprising:
forming an insulating layer on the connecting line; and
forming a jumper line on the insulating layer to connect a first sensing electrode of the plurality of the column-arranged second sensing electrodes to a second sensing electrode of the plurality of column-arranged second sensing electrodes.

15. The touch device of claim 1 , wherein the sensing portion of the transparent sensing electrode layer contacts a lateral side of the first decoration layer, the extension portion of the transparent sensing electrode layer covers a first part of the upper surface of the first decoration layer, and the second decoration layer is mainly disposed on a second part of the upper surface of the first decoration layer.

16. The touch device of claim 15 , wherein the second decoration layer contacts the extension portion of the transparent sensing electrode layer by covering a part of the extension portion of the transparent sensing electrode layer.

17. The method of fabricating a touch device of claim 10 , wherein: forming the transparent sensing electrode layer comprises forming the transparent sensing electrode layer in a manner such that the sensing portion of the transparent sensing electrode layer contacts a lateral side of the first decoration layer and such that the extension portion of the transparent sensing electrode layer covers a first part of the upper surface of the first decoration layer, and forming the second decoration layer comprises forming the second decoration layer i in a manner such that the second decoration layer is mainly disposed on a second of the upper surface of the first decoration layer.

18. The method of fabricating a touch device of claim 17 , wherein forming the second decoration layer comprise forming the second decoration layer in a manner such that the second decoration layer contacts the extension portion of the transparent sensing electrode by covering a part of the extension portion of the transparent sensing electrode layer.

Assignees

• Tpk Glass Solutions Xiamen Inc
• Tpk Touch Solutions Xiamen Inc

Inventors

• Chiu Chien-Tai
• Su Yu-Xun
• Huang Weijie
• Hu Qingwen

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · 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

• G06F1/181

  Enclosures (for portable computers G06F1/1613) · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title