Touch sensing electrode and touch panel using the same

Patent metadata

Field	Value
Publication number	US-9405410-B2
Application number	US-201213592365-A
Country	US
Kind code	B2
Filing date	Aug 23, 2012
Priority date	Sep 7, 2011
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

The present invention provides a touch sensing including a plurality of first sensing lines. Each first sensing line includes a first main trace and a plurality of first trace patterns wherein at least a first cross posit is disposed between the first main trace and the trace patterns. The present invention further provides a touch panel of using the same.

First claim

What is claimed is:

1. A touch panel, comprising:
a transparent substrate; and
a touch sensing electrode formed on the transparent substrate and comprising a plurality of first sensing lines, wherein each first sensing line includes:
at least one first trace pattern comprising an outer loop and an inner loop encircled by the outer loop, wherein the inner loop is spaced apart from the outer loop by a spacing such that the outer loop is free from overlapping the inner loop; and
a first main trace passing through the inner loop and the outer loop, wherein the first main trace has a first segment and a second segment respectively extending from opposite sides of the inner loop to the outer loop, wherein the spacing continuously extends from the first segment to the second segment; and
wherein the inner loop and the outer loop are formed by a continuous trace line showing a closed or an enclosed pattern.

2. The touch panel according to claim 1 , wherein the first sensing lines are parallel to each other and are stretching along a first direction.

3. The touch panel according to claim 2 , wherein the touch sensing electrode further comprises a plurality of second sensing lines parallel to each other and stretching along a second direction, wherein the first sensing lines and the second sensing lines are insulated from each other.

4. The touch panel according to claim 1 , wherein each first trace pattern comprises a plurality of concentric trace patterns.

5. The touch panel according to claim 1 , wherein the shape of the first trace pattern comprises a polygon, a circle, an ellipse or a circular segment.

6. The touch panel according to claim 1 , wherein the first trace pattern is a symmetrical shape and the axis of symmetry is the first main trace.

7. The touch panel according to claim 1 , wherein the first sensing lines comprise metal, conductive photoresist, conductive ink or carbon film.

8. The touch panel according to claim 3 , wherein the second sensing lines comprise transparent conductive material.

9. The touch panel according to claim 3 , wherein each second sensing line comprises a second main trace and a plurality of second trace patterns wherein at least a second cross point is disposed between the second main trace and each second trace pattern.

10. The touch panel according to claim 9 , wherein the second sensing lines comprise metal, conductive photoresist, conductive ink or carbon film.

11. The touch panel according to claim 9 , wherein each second trace pattern comprises a plurality of concentric trace patterns.

12. The touch panel according to claim 9 , wherein the shape of the second trace pattern comprises a polygon, a circle, an ellipse or a circular segment.

13. The touch panel according to claim 9 , wherein each second trace pattern is a symmetrical shape and the axis of symmetry is the main second trace.

14. The touch panel according to claim 3 , wherein the first sensing lines and the second sensing lines are disposed on the same side of a substrate.

15. The touch panel according to claim 3 , wherein the first sensing lines and the second sensing lines are disposed on two different sides of a substrate.

16. The touch panel according to claim 15 , further comprising a plurality of insulation mounds disposed between the first sensing lines and the second sensing lines to insulate therebetween.

17. A touch panel, comprising:
a transparent substrate; and
a touch sensing electrode formed on the transparent substrate and comprising:
a plurality of first sensing lines stretching along a first direction on the transparent substrate, wherein each first sensing line includes:
at least one first trace pattern including an outer loop and an inner loop encircled by the outer loop, wherein the inner loop is spaced apart from the outer loop by a spacing such that the outer loop is free from overlapping the inner loop, wherein the inner loop and the outer loop are of concentric trace patterns; and
a first main trace passing through the inner loop and the outer loop, wherein the first main trace has a first segment and a second segment respectively extending from opposite sides of the inner loop to the outer loop, wherein the spacing continuously extends from the first segment to the second segment; and

a plurality of second sensing lines stretching along a second direction on the transparent substrate, wherein the first sensing lines and the second sensing lines are insulated from each other; and

wherein the inner loop and the outer loop are formed by a continuous trace line showing a closed or an enclosed pattern.

18. A touch panel, comprising:
a transparent substrate; and
a touch sensing electrode formed on the transparent substrate and comprising:
a plurality of first sensing lines stretching along a first direction on the transparent substrate, wherein each first sensing line is made from an opaque material, and includes:
at least one first trace pattern including an outer loop and an inner loop encircled by the outer loop, wherein the inner loop is spaced apart from the outer loop by a spacing such that the outer loop is free from overlapping the inner loop; and
a first main trace passing through the inner loop and the outer loop, wherein the first main trace has a first segment and a second segment respectively extending from opposite sides of the inner loop to the outer loop, wherein the spacing continuously extends from the first segment to the second segment; and

a plurality of second sensing lines stretching along a second direction on the transparent substrate, wherein the first sensing lines and the second sensing lines are insulated from each other, and wherein the second sensing lines comprise transparent conductive material; and

wherein the inner loop and the outer loop are formed by a continuous trace line showing a closed or an enclosed pattern.

Assignees

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

Inventors

• Xie Yanjun
• Jiang Yau-Chen

Classifications

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G06F3/044 Primary

  by capacitive means · 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

• G01R27/26

  Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants {; Measuring impedance or related variables} · CPC title

• G06F3/0446 Primary

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