Method of Forming Touch Sensing Circuit Pattern

• US 20090277695A1
• Filed: 07/08/2008
• Published: 11/12/2009
• Est. Priority Date: 05/12/2008
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: LIU, Chen-Yu, Wang, Ching-Yi
• Granted Patent: US 8,283,935 B2
• Time in Patent Office: Days
• US Class Current: 178/18.30
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A method of forming a touch sensing circuit pattern includes steps of: forming a first axial conductive line on a transparent substrate; forming an insulation barrier on the first axial conductive line; forming two separated first axial electrodes, two separated second axial electrodees and the second axial conductive line on the transparent substrate. The first axial electrodes are arranged on two sides of the insulation barrier along a first direction. The second axial electrodes are arranged on two opposite sides of the axial conductive line along a second direction. The second axial conductive line is across on the insulation barrier and connects to the second axial electrodes. The method of the invention can simplify the manufacturing process.

Claims

1. A method of forming a touch sensing circuit pattern, comprising:

forming a first axial conductive line on a transparent substrate;

forming an insulation barrier on the first axial conductive line;

forming two separated first axial electrodes, two separated second axial electrodes and a second axial conductive line on the transparent substrate,

wherein the first axial electrodes are arranged on two sides of the insulation barrier along a first direction so as to be connected by the first axial conductive line;

the second axial electrodes are arranged on two sides of the first axial conductive line along a second direction; and

the second axial conductive line is across the insulation barrier and connects to the second axial electrodes to form a touch sensing circuit pattern.

2. The method of claim 1, wherein the first axial conductive line is made of non-transparent conductive material.

3. The method of claim 1, wherein the first axial conductive line is made of transparent conductive material.

4. The method of claim 1, wherein the first axial electrodes, the second axial conductive line and the second axial electrodes are made of transparent conductive material.

5. A method of forming a touch sensing circuit pattern, comprising:

forming a plurality of parallel first axial conductive lines on a transparent substrate;

forming a plurality of separated insulation barriers on the first axial conductive lines;

forming a plurality of separated first axial electrodes, a plurality of separated second axial electrodes and a plurality of parallel second axial conductive lines on the transparent substrate,

wherein two adjacent first axial electrodes are arranged on two sides of a corresponding insulation barrier along a first direction so as to be connected by a corresponding first axial conductive line;

two adjacent second axial electrodes are arranged on two sides of the first axial conductive line along a second direction; and

the second axial conductive lines are across the insulation barriers and connect to the second axial electrodes to form a touch sensing circuit pattern.

6. The method of claim 5, wherein the first axial conductive lines are made of non-transparent conductive material.

7. The method of claim 5, wherein the first axial conductive lines are made of transparent conductive material.

8. The method of claim 5, wherein the first axial electrodes, the second axial conductive lines and the second axial electrodes are made of transparent conductive material.