Touch-sensing electrode structure and touch-sensitive device

• US 9,684,417 B2
• Filed: 05/22/2014
• Issued: 06/20/2017
• Est. Priority Date: 05/24/2013
• Status: Expired due to Fees

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Su, Kuo-Chang, Lu, Chia-Ching, Ju, Tai, Su, Chen-Hao, Chen, Yu-Ting
• Primary Examiner(s): Bibbins, Latanya
• Application Number:
  US14/285,395
• Publication Number:
  US 20140347299A1
• Time in Patent Office: 1,125 Days
• 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
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch-sensing electrode structure includes multiple first electrodes and multiple second electrodes. Each of the first electrodes includes at least a first major part and a second major part, the first major part and the second major part cross over each other to form at least one interconnect section, the interconnect section includes a first connecting line extending in a first direction and a second connecting line extending in a second direction different to the first direction. Each of the second electrodes includes a plurality of electrode sections and third connecting lines, each of the third connecting lines is connected between two adjacent electrode sections, the third connecting lines extend in a third direction different to the first direction and the second direction, and at least one of the third connecting lines overlaps the interconnect section.

Claims

1. A touch-sensing electrode structure, comprising:

a plurality of first electrodes, wherein each of the first electrodes comprises at least a first major part and a second major part, the first major part and the second major part cross over each other to form at least one interconnect section, the interconnect section comprises a first connecting line extending in a first direction and a second connecting line extending in a second direction different to the first direction, and the first connecting line is intersected with the second connecting line; and

a plurality of second electrodes, wherein each of the second electrodes comprises a plurality of electrode sections, at least one longitudinal part and third connecting lines, each of the third connecting lines is connected between two adjacent electrode sections, the third connecting lines extend in a third direction different to the first direction and the second direction, at least one of the third connecting lines overlaps the interconnect section, the longitudinal part extending in a fourth direction and crossing the interconnect section, the fourth direction being different to the first, the second and the third directions, and the longitudinal part comprising;

at least one stripe segment; and

a plurality of branches connected with the stripe segment and forming at least one angle with the stripe segment.

2. The touch-sensing electrode structure as claimed in claim 1, wherein the branches connected with the same stripe segment and arranged alone the longitudinal direction of the stripe segment have different lengths.

3. The touch-sensing electrode structure as claimed in claim 2, where the branches are gradually decreased in length along a direction away from the interconnect section.

4. The touch-sensing electrode structure as claimed in claim 1, wherein the longitudinal direction of the stripe segment is substantially parallel to the first major part and the second major part of each of the first electrodes.

5. The touch-sensing electrode structure as claimed in claim 1, wherein each of the first electrodes comprises a plurality of electrode sections and a plurality of branches protruding from the electrode sections, and the branches of the second electrodes and the branches of the first electrodes are alternately arranged in the touch-sensing electrode structure.

6. The touch-sensing electrode structure as claimed in claim 1, wherein the interconnect section has an X-shaped profile.

7. The touch-sensing electrode structure as claimed in claim 1, further comprising:

an insulation layer at least overlapping the interconnect section and separating the first electrodes from the second electrodes.

8. The touch-sensing electrode structure as claimed in claim 7, wherein the insulation layer includes multiple insulators separate from each other and disposed corresponding to a plurality of the crossover locations.

9. The touch-sensing electrode structure as claimed in claim 1, wherein the first electrodes serve as sense lines and the second electrodes serve as drive lines, or the first electrodes serve as drive lines and the second electrodes serve as sense lines.

10. A touch-sensitive device, comprising:

a first substrate;

a plurality of first electrodes disposed on the first substrate, wherein each of the first electrodes comprises at least a first major part and a second major part, the first major part and the second major part cross over each other to form at least one interconnect section, the interconnect section comprises a first connecting line extending in a first direction and a second connecting line extending in a second direction different to the first direction, and the first connecting line is intersected with the second connecting line;

a second substrate disposed on one side of the first substrate and spaced apart the first substrate by an interval; and

a plurality of second electrodes disposed on the second substrate, wherein each of the second electrodes comprises a plurality of electrode sections, at least one longitudinal part and third connecting lines, each of the third connecting lines is connected between two adjacent electrode sections, the third connecting lines extend in a third direction different to the first direction and the second direction, and at least one of the third connecting lines overlaps the interconnect section, the longitudinal part extending in a fourth direction and crossing the interconnect section, the fourth direction being different to the first, the second and the third directions, and the longitudinal part comprising;

at least one stripe segment; and

a plurality of branches connected with the stripe segment and forming at least one angle with the stripe segment.

11. The touch-sensitive device as claimed in claim 10, wherein at least one of the first substrate and the second substrate comprises a plastic film.

12. The touch-sensitive device as claimed in claim 10, wherein the first substrate is a plastic film and the second substrate is a cover glass, or the first substrate is a cover glass and the second substrate is a plastic film.