Touch panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9448668-B2
Application number	US-201213598620-A
Country	US
Kind code	B2
Filing date	Aug 30, 2012
Priority date	Oct 26, 2011
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A touch panel comprises of a plurality of first strip sensing electrodes and a plurality of second strip sensing electrodes. The first strip sensing electrodes are respectively disposed in a plurality of strip sensing regions with fixed lengths, and each of the second strip sensing electrodes is disposed corresponding to each of the first strip sensing electrodes in each of the strip sensing regions. Each second strip sensing electrode and corresponding first strip sensing electrode are electrically disconnected from each other. Length of each second strip sensing electrode and length of the corresponding first strip sensing electrode are complementary to each other. In one embodiment of the present disclosure, a method for manufacturing the touch panel is also disclosed.

First claim

What is claimed is:

1. A touch panel having at least one sensing region, comprising:
a plurality of electrodes substantially distributed in the entire sensing region; wherein each of the electrodes comprises:
a first strip sensing segment;
a second strip sensing segment, wherein the second strip sensing segment corresponds to the first strip sensing segment, and wherein the second strip sensing segment and the corresponding first strip sensing segment are electrically disconnected from each other; and
a plurality of first wires and a plurality of second wires, wherein each of the first wires is electrically connected to the corresponding first strip sensing segment, and each of the second wires is electrically connected to the corresponding second strip sensing segment, such that signals representing change in capacitance of each first strip sensing segment and each second strip sensing segment are judged to recognize a position of touch point,
wherein all the electrodes in the sensing region are sensing electrodes, and each of the electrodes outputs sensing signal representing a change in capacitance thereof upon touch, and
wherein the sensing region has a fixed length, wherein each of the electrodes includes exactly two strip sensing segments including the first strip sensing segment and the second strip sensing segment, and wherein lengths of the first strip sensing segment and the second strip sensing segment are complementary to each other with respect to the fixed length.

2. The touch panel of claim 1 , further comprising a substrate, wherein the first strip sensing segment and the second strip sensing segment are disposed on the substrate.

3. The touch panel of claim 1 , wherein lengths of the first strip sensing segments of the adjacent sensing electrodes are different from each another, and wherein lengths of the second strip sensing segments of the adjacent sensing electrodes are different from each other.

4. The touch panel of claim 1 , wherein lengths of the first strip sensing segments have progressive or digressive relationship, and wherein lengths of the second strip sensing segments have progressive or digressive relationship.

5. The touch panel of claim 3 , wherein the plurality of electrodes form a plurality of adjacently aligned sensing combination regions.

6. The touch panel of claim 5 , wherein in one of the sensing combination regions, lengths of the first strip sensing segments have progressive or digressive relationship, and wherein lengths of the second strip sensing segments have progressive or digressive relationship.

7. The touch panel of claim 5 , wherein sum of the lengths of the first strip sensing segment and the corresponding second strip sensing segment in one of the sensing combination regions is equal to sum of the lengths of the first strip sensing segment and the corresponding second strip sensing segment in the adjacent sensing combination region.

8. A method for manufacturing a touch panel, comprising:
providing a substrate having at least one sensing region thereon;
forming a plurality of electrodes substantially distributed in the entire sensing region, wherein all the electrodes in the sensing region are sensing electrodes, and each of the electrodes outputs sensing signal representing a change in capacitance thereof upon touch; and wherein each of the electrodes comprises:
a first strip sensing segment and a second strip sensing segment, wherein the second strip sensing segment corresponds to the first strip sensing segment, and the second strip sensing segment and the corresponding first strip sensing segment are electrically disconnected from each other; and
forming a plurality of first wires and a plurality of second wires, wherein each of the first wires is electrically connected to the corresponding first strip sensing segment, and each of the second wires is electrically connected to the corresponding second strip sensing segment such that signals representing change in capacitance of each first strip sensing segment and each second strip sensing segment are judged to recognize a position of touch point, and
wherein the sensing region has a fixed length, wherein each of the electrodes includes exactly two strip sensing segments including the first strip sensing segment and the second strip sensing segment, and wherein lengths of the first strip sensing segment and the second strip sensing segment are complementary to each other with respect to the fixed length.

9. The method for manufacturing the touch panel of claim 8 , wherein lengths of the first strip sensing segments of the adjacent sensing electrodes are different from each another, and wherein lengths of the second strip sensing segments of the adjacent sensing electrodes are different from each other.

10. The method for manufacturing the touch panel of claim 8 , wherein lengths of the first strip sensing segments have progressive or digressive relationship, and wherein lengths of the second strip sensing segments have progressive or digressive relationship.

11. The method for manufacturing the touch panel of claim 8 , wherein the plurality of electrodes form a plurality of adjacently aligned sensing combination regions.

12. The method for manufacturing the touch panel of claim 11 , wherein in one of the sensing combination regions, lengths of the first strip sensing segments have progressive or digressive relationship, and wherein lengths of the second strip sensing segments have progressive or digressive relationship.

13. The method for manufacturing the touch panel of claim 8 , wherein the first strip sensing segment and the second strip sensing segment are formed simultaneously by same pattern process.

14. The method for manufacturing the touch panel of claim 8 , wherein the first strip sensing segment and the second strip sensing segment are formed by different pattern processes.

15. The method for manufacturing the touch panel of claim 11 , wherein sum of the lengths of the first strip sensing segment and the corresponding second strip sensing segment in each sensing combination region is equal to sum of the lengths of the first strip sensing segment and the corresponding second strip sensing segment in the adjacent sensing combination region.

16. The touch panel of claim 1 , wherein the first wires and the second wires are made of transparent conducting materials or opaque conducting materials.

17. A touch panel, comprising:
a substrate having a sensing region;
a plurality of electrodes substantially distributed in the entire sensing region; wherein each of the electrodes comprises a first strip sensing segment and a second strip sensing segment, wherein a gap portion is formed between the first strip sensing segment and the second strip sensing, and wherein all the electrodes in the sensing region are sensing electrodes and each of the electrodes outputs sensing signal representing a change in capacitance thereof upon touch; and
a plurality of peripheral wires connected to the first strip sensing segment and the second strip sensing segment, and
wherein the sensing region has a fixed length, wherein each of the electrodes includes exactly two strip sensing segments including the first strip sensing segment and the second strip sensing segment, and wherein lengths of the first strip sensing segment and the second strip sensing segment are complementary to each other with respect to the fixed length.

Assignees

• Xie Yanjun
• Jiang Yau-Chen
• Guan Bixin
• Tpk Touch Solutions Xiamen Inc

Inventors

• Xie Yanjun
• Jiang Yau-Chen
• Guan Bixin

Classifications

• G06F2203/04103

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

• Y10T29/49105

  Switch making · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• G06F3/0446

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