Touch panel

• US 9,323,092 B2
• Filed: 07/23/2013
• Issued: 04/26/2016
• Est. Priority Date: 12/05/2011
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Lo, Pi-Lin, Lin, Yen-Cheng, Hsueh, Yi-Fan, Chen, Jui-Liang, Li, Yi-Cheng
• Primary Examiner(s): Briggs, Nathanael R
• Application Number:
  US13/948,181
• Publication Number:
  US 20140022466A1
• Time in Patent Office: 1,008 Days
• Field of Search: 349/12
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• 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 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Abstract

A touch panel including a first substrate, plural first electrode lines and plural second electrode lines is provided. The first electrode lines and the second electrode lines are respectively arranged on the first substrate and extended along two different directions respectively. Each of the first electrode lines includes plural electrode pads and plural first connecting parts connected therebetween, wherein each of the first connecting parts has two end portions and a center portion, a width of each of the first connecting parts is decreased from the two end portions to the center portion, and corners of connections between the end portions and the corresponding electrode pads are smooth curved surfaces. The second electrode lines are electrically insulated with the first electrode lines, and perpendicular projections of each of the second electrode lines and the corresponding first connecting part on the first substrate are intersected to form an overlap region.

Claims

1. A touch panel, comprising:

a first substrate;

a plurality of first electrode lines arranged on the first substrate in parallel and respectively extended along a first direction, each of the first electrode lines including a plurality of electrode pads and a plurality of first connecting parts, arbitrary two adjacent electrode pads among the electrode pads being connected through one of the first connecting parts correspondingly, and a width of each of the electrode pads in the second direction being consistent over the entire length of the electrode pad and greater than widths of the first connecting parts, wherein each of the first connecting parts has two end portions configured to connect the electrode pads, and a center portion located between the two end portions, the width of each of the first connecting parts is decreased from the two end portions to the center portion to form a necking shape, and corners of connections between the two end portions of each of the first connecting parts and the corresponding electrode pads are smooth curved surfaces, wherein the smooth curved surfaces are arc curved surfaces; and

a plurality of second electrode lines arranged on the first substrate in parallel and respectively extended along a second direction, the second direction being intersected with the first direction, the second electrode lines being electrically insulated with the first electrode lines, a width of each of the second electrode lines is smaller than a width of each of the electrode pads, and a perpendicular projection of each of the second electrode lines on the first substrate being intersected with a perpendicular projection of the corresponding first connecting part of each of the first electrode lines on the first substrate, so as to respectively form an overlap region, and a length of the overlap region on the second direction is smaller than a length of the overlap region on the first direction.

2. The touch panel of claim 1, further comprising a second substrate disposed on the first substrate, and the first electrode lines and the second electrode lines being respectively located on two opposite sides of the second substrate.

3. The touch panel of claim 1, wherein the first substrate has a first surface and a second surface opposite to the first surface, the first electrode lines being located on the first surface, and the second electrode lines being located on the second surface.

4. The touch panel of claim 1, further comprising an insulating material, wherein the first electrode lines and the second electrode lines are located on a first surface of the first substrate, and the insulating material is located on the first surface and between the second electrode lines and the first connecting parts of the corresponding first electrode lines.

5. The touch panel of claim 1, wherein the corners of the connections between the two end portions of each of the first connecting parts and the corresponding electrode pads forms an arc curved surface together with two side surfaces of the center portion.

6. The touch panel of claim 1, wherein each of the center portion being located within the corresponding overlap region, two opposite side surfaces of each of the center portion being a plane, the corners of the connections between the two end portions of each of the first connecting parts and the corresponding electrode pads forming an arc curved surface, and the arc curved surface being extended into the overlap region and connecting the two opposite side surfaces of each of the center portion.

7. The touch panel of claim 1, wherein the arbitrary two adjacent electrode pads of each of the first electrode lines are connected through two of the corresponding first connecting parts.

8. The touch panel of claim 1, further comprising a plurality of second connecting parts adjacent to an edge of the first substrate, and each of more than two adjacent second electrode lines connecting through the second connecting part.

9. A touch panel, comprising:

a first substrate;

a plurality of first electrode lines arranged on the first substrate in parallel and respectively extended along a first direction, each of the first electrode lines including a plurality of electrode pads and a plurality of first connecting parts, arbitrary two adjacent electrode pads among the electrode pads being connected through one of the first connecting parts correspondingly, and a width of each of the electrode pads in the second direction being consistent over the entire length of the electrode pad and greater than widths of the first connecting parts, wherein each of the first connecting parts has two end portions configured to connect the electrode pads, and a center portion located between the two end portions, the width of each of the first connecting parts is decreased from the two end portions to the center portion to form a necking shape, and corners of connections between the two end portions of each of the first connecting parts and the corresponding electrode pads are smooth curved surfaces; and

a plurality of second electrode lines arranged on the first substrate in parallel and respectively extended along a second direction, the second direction being intersected with the first direction, the second electrode lines being electrically insulated with the first electrode lines, a width of each of the second electrode lines is smaller than a width of each of the electrode pads, and a perpendicular projection of each of the second electrode lines on the first substrate being intersected with a perpendicular projection of the corresponding first connecting part of each of the first electrode lines on the first substrate, so as to respectively form an overlap region, and a length of the overlap region on the second direction is smaller than a length of the overlap region on the first direction.

10. The touch panel of claim 9, further comprising a second substrate disposed on the first substrate, and the first electrode lines and the second electrode lines being respectively located on two opposite sides of the second substrate.

11. The touch panel of claim 9, wherein the first substrate has a first surface and a second surface opposite to the first surface, the first electrode lines being located on the first surface, and the second electrode lines being located on the second surface.

12. The touch panel of claim 9, further comprising an insulating material, wherein the first electrode lines and the second electrode lines are located on a first surface of the first substrate, and the insulating material is located on the first surface and between the second electrode lines and the first connecting parts of the corresponding first electrode lines.

13. The touch panel of claim 9, wherein the smooth curved surfaces are arc curved surfaces.

14. The touch panel of claim 9, wherein the corners of the connections between the two end portions of each of the first connecting parts and the corresponding electrode pads forms an arc curved surface together with two side surfaces of the center portion.

15. The touch panel of claim 9, wherein each of the center portion being located within the corresponding overlap region, two opposite side surfaces of each of the center portion being a plane, the corners of the connections between the two end portions of each of the first connecting parts and the corresponding electrode pads forming an arc curved surface, and the arc curved surface being extended into the overlap region and connecting the two opposite side surfaces of each of the center portion.

16. The touch panel of claim 9, wherein the arbitrary two adjacent electrode pads of each of the first electrode lines are connected through two of the corresponding first connecting parts.

17. The touch panel of claim 9, further comprising a plurality of second connecting parts adjacent to an edge of the first substrate, and each of more than two adjacent second electrode lines connecting through the second connecting part.