Self-capacitive touch panel and conductive layer structure thereof

Patent metadata

Field	Value
Publication number	US-2016349869-A1
Application number	US-201414407459-A
Country	US
Kind code	A1
Filing date	Nov 21, 2014
Priority date	Nov 18, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

A self-capacitive touch panel and a conductive layer structure thereof are provided. The conductive layer structure includes multiple rectangular first electrode patterns, multiple second electrode patterns and multiple peripheral wires correspondingly connected with the first electrode patterns and the second electrode patterns. The first electrode patterns are arranged in a matrix. Neighboring two rows of first electrode patterns have at least two second electrode patterns disposed therebetween, and the second electrode patterns located at a same row have widths gradually decreased or increased along row direction and thereby together form a rectangular shape as a whole. By the above described manner, the invention can accurately determine actual touch points.

First claim

What is claimed is:

1 . A conductive layer structure comprising: a plurality of rectangular first electrode patterns, a plurality of second electrode patterns and a plurality of peripheral wires correspondingly connected with the plurality of first electrode patterns and the plurality of second electrode patterns;
wherein the plurality of first electrode patterns are arranged in a matrix; neighboring two rows of the first electrode patterns have two second electrode patterns located at a same row disposed therebetween, one of the two second electrode patterns has a width gradually decreased along row direction, the other of the two second electrode patterns has a width gradually increased along the row direction, and thereby the two second electrode patterns together form a rectangular shape as a whole; wherein the first electrode patterns located at a same column are connected to a same one of the plurality of peripheral wires, the conductive layer structure further comprises an auxiliary electrode pattern disposed at an edge position outside a coverage area of the plurality of first electrode patterns and the plurality of second electrode patterns.

2 . The conductive layer structure as claimed in claim 1 , wherein the two second electrode patterns are two centrosymmetric electrode patterns of right-angled triangle or right-angled trapezoid.

3 . The conductive layer structure as claimed in claim 1 , wherein the auxiliary electrode pattern is a rectangle electrode pattern.

4 . A conductive layer structure comprising: a plurality of rectangular first electrode patterns, a plurality of second electrode patterns and a plurality of peripheral wires correspondingly connected with the plurality of first electrode patterns and the plurality of second electrode patterns;
wherein the plurality of first electrode patterns are arranged in a matrix; neighboring two rows of the first electrode patterns have at least two of the plurality of second electrode patterns disposed therebetween, the second electrode patterns located at a same row have widths gradually decreased or increased along row direction and thereby together form a rectangular shape as a whole.

5 . The conductive layer structure as claimed in claim 4 , wherein the first electrode patterns located at a same column are connected to a same one of the plurality of peripheral wires.

6 . The conductive layer structure as claimed in claim 4 , wherein the neighboring two rows of the first electrode patterns have two second electrode patterns disposed therebetween, one of the two second electrode patterns has a width gradually decreased along the row direction, and the other of the two second electrode patterns has a width gradually increased along the row direction.

7 . The conductive layer structure as claimed in claim 6 , wherein the two second electrode patterns are two centrosymmetric electrode patterns of right-angled triangle or right-angled trapezoid.

8 . The conductive layer structure as claimed in claim 4 , wherein the neighboring two rows of the first electrode patterns have three second electrode patterns disposed therebetween, the three second electrode patterns are staggeredly arranged along column direction, one of the three second electrode patterns which is located at the middle has a width gradually decreased along the row direction, and two of the three second electrode patterns which are located at two sides have widths gradually increased along the row direction.

9 . The conductive layer structure as claimed in claim 8 , wherein along the row direction, changes of the widths of the three second electrode patterns located at one of neighboring two rows are reverse to changes of the widths of the three second electrode patterns located at the other of the neighboring two rows.

10 . The conductive layer structure as claimed in claim 8 , wherein the one of the three second electrode patterns which is located at the middle is an electrode pattern of isosceles triangle or isosceles trapezoid, the two of the three second electrode patterns which are located at the two sides are electrode patterns of right-angled triangle or right-angled trapezoid.

11 . The conductive layer structure as claimed in claim 4 , wherein the conductive layer structure further comprises an auxiliary electrode pattern, and the auxiliary electrode pattern is disposed at an edge position outside a coverage area of the plurality of first electrode patterns and the plurality of second electrode patterns.

12 . The conductive layer structure as claimed in claim 11 , wherein the auxiliary electrode pattern is a rectangle electrode pattern.

13 . A self-capacitive touch panel comprising a signal detector, a processor and a conductive layer structure; the signal detector being connected with a plurality of peripheral wires and configured for detecting capacitive touch control signals on row direction and on column direction, the processor being connected with the signal detector and configured for determining actual touch points in a multi-touch event according to the capacitive touch control signals; the conductive layer structure comprising a plurality of rectangular first electrode patterns, a plurality of second electrode patterns and the plurality of peripheral wires correspondingly connected with the plurality of first electrode patterns and the plurality of second electrode patterns;
wherein the plurality of first electrode patterns are arranged in a matrix; neighboring two rows of the first electrode patterns have at least two of the plurality of second electrode patterns disposed therebetween, the second electrode patterns located at a same row have widths gradually decreased or increased along the row direction and thereby together form a rectangular shape as a whole.

14 . The self-capacitive touch panel as claimed in claim 13 , wherein the first electrode patterns located at a same column are connected to a same one of the plurality of the peripheral wires.

15 . The self-capacitive touch panel as claimed in claim 13 , wherein the neighboring two rows of the first electrode patterns have two second electrode patterns disposed therebetween, one of the two second electrode patterns has a width gradually decreased along the row direction, and the other of the two second electrode patterns has a width gradually increased along the row direction.

16 . The self-capacitive touch panel as claimed in claim 15 , wherein the two second electrode patterns are centrosymmetric two electrode patterns of right-angled triangle or right-angled trapezoid.

17 . The self-capacitive touch panel as claimed in claim 13 , wherein the neighboring two rows of the first electrode patterns have three second electrode patterns disposed therebetween, the three second electrode patterns are staggeredly arranged along the column direction, one of the three second electrode patterns which is located at the middle has a width gradually decreased along the row direction, and two of the three second electrode patterns which are located at two sides have widths gradually increased along the row direction.

18 . The self-capacitive touch panel as claimed in claim 17 , wherein along the row direction, changes of the widths of the three second electrode patterns located at one of neighboring two rows are reverse to changes of the widths of the three second electrode patterns located at the other of the neighboring two rows.

19 . The self-capacitive touch panel as claimed in claim 17 , wherein the one of the three second electro

Assignees

• Shenzhen China Star Optoelect

Inventors

• Chang Chun-Kai

Classifications

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title