TOUCH PANEL

• US 20190227646A1
• Filed: 06/29/2018
• Published: 07/25/2019
• Est. Priority Date: 01/25/2018
• Status: Abandoned Application

• Current Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Ltd.
• Original Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Ltd.
• Inventors: YE, Jian
• Application Number:
  US16/023,676
• Publication Number:
  US 20190227646A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• 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 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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

Abstract

The present invention provides a touch panel where every two adjacent first electrodes are electrically connected by a first connection element. Each first connection element includes at least one conductive bridge. These conductive bridges jointly sustain the bending stress when the touch panel is bent, effectively reducing the bending stress distributed on each conductive bridge and thereby preventing the touch panel from breaking. Multiple vias are formed on each conductive bridge, further reducing the bending stress on each conductive bridge and preventing the touch panel from breaking.

Claims

1. A touch panel, comprising a touch layer;

wherein the touch layer comprises;

a plurality of first electrode chains arranged at intervals, each comprising a plurality of first electrodes at intervals, where every two adjacent first electrodes are electrically connected by a first connection element, each first connection element comprises at least one conductive bridge, and the at least one conductive bridge has a plurality of vias at intervals; and

a plurality of second electrode chains arranged at intervals crossing but insulated from the first electrode chains, each comprising a plurality of second electrodes at intervals, where every two adjacent second electrodes are electrically connected by a second connection element, and the first connection elements are disposed on and insulated from the second connection elements.

2. The touch panel according to claim 1, wherein the at least one conductive bridge has two separated and linear long edges.

3. The touch panel according to claim 1, wherein the at least one conductive bridge has two separated and curved long edges;

each long edge of the conductive bridge is curved and comprises a plurality of crests at intervals;

a trough is formed between every two adjacent crests;

the crests along the two long edges are positioned oppositely to each other;

each via is positioned between a pair of corresponding crests.

4. The touch panel according to claim 1, wherein each first connection element comprises a plurality of conductive bridges arranged in parallel or crossing each other.

5. The touch panel according to claim 2, wherein each first connection element comprises a plurality of conductive bridges arranged in parallel or crossing each other.

6. The touch panel according to claim 3, wherein each first connection element comprises a plurality of conductive bridges arranged in parallel or crossing each other.

7. The touch panel according to claim 4, wherein each first connection element further comprises at least one connecting strip connecting the conductive bridges.

8. The touch panel according to claim 7, wherein the at least one connecting strip has a plurality of vias at intervals.

9. The touch panel according to claim 7, wherein a first connecting strip runs across the conductive bridges and connects a first end of each conductive bridge;

a second connecting strip runs across the conductive bridges and connects a second end of each conductive bridge opposite to the first end; and

the first and second connecting strips are disposed on the adjacent first electrodes connected by the first connection element, respectively.

10. The touch panel according to claim 7, wherein the at least one connecting strip runs across the conductive bridges and connects the conductive bridges at their middles.

11. The touch panel according to claim 1, further comprising a lid disposed on the touch layer;

wherein the touch layer is attached to an inner side of the lid.

12. The touch panel according to claim 11, herein the lid is a 3D lid;

the lid comprises a first plane and two curved planes to the lateral sides of and connected to the first plane;

each curved plane curves from the first plane towards a direction perpendicular to the first plane; and

the first connection elements are extended along a direction identical to an extension direction of the curved planes'"'"' curvature axes.