Touch panel

• US 9,268,449 B2
• Filed: 05/21/2014
• Issued: 02/23/2016
• Est. Priority Date: 01/29/2014
• Status: Active Grant

• Current Assignee: Wistron Corporation
• Original Assignee: Wistron Corporation
• Inventors: Wang, Kuo-Hsing, Chang, Yao-Tsung, Tsai, Chu-Chia, Dai, Hsih-Bin, Chiang, Chih-Chung
• Primary Examiner(s): ABDIN, SHAHEDA A
• Application Number:
  US14/283,232
• Publication Number:
  US 20150212632A1
• Time in Patent Office: 643 Days
• Field of Search: 345/173
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• 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 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• 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

A touch panel including a substrate, first sensing series, second sensing series, first lines and second lines is provided. Each first sensing series includes first electrode portions and first crossing portions. Each second sensing series includes second electrode portions and second crossing portions. Any adjacent two among the first electrode portions and the second electrode portions are separated by a spacing region. Each first crossing portion crosses one second crossing portion. The first lines respectively connect to the first sensing series and extend to a bonding region of the substrate. The second lines are disposed along the spacing region to respectively connect to the second sensing series and extend to the bonding region. One second line connected to an N^th second sensing series crosses one second crossing portion of an M^th second sensing series, wherein N and M are different positive integers.

Claims

1. A touch panel, comprising:

a substrate having a bonding region and a sensing region adjacent to each other on a first direction;

a plurality of first sensing series located in the sensing region, each of the first sensing series comprising a plurality of first electrode portions and a plurality of first crossing portions, and the first crossing portions and the first electrode portions being alternately connected along the first direction;

a plurality of second sensing series located in the sensing region, each of the second sensing series comprising a plurality of second electrode portions and a plurality of second crossing portions, the second crossing portions and the second electrode portions being alternately connected along a second direction, the first direction intersecting the second direction, and each of the second crossing portions crossing one of the first crossing portions, wherein any adjacent two among the second electrode portions and the first electrode portions, any adjacent two among the first electrode portions, and any adjacent two among the second electrode portions are separated by a spacing region, respectively;

a plurality of first lines respectively connecting to the first sensing series and extending to the bonding region; and

a plurality of second lines respectively connecting to the second sensing series and extending to the bonding region, wherein each of the second lines is disposed along the spacing region, and one of the second lines connected to an N^th second sensing series crosses one of the second crossing portions of an M^th second sensing series, wherein N and M are positive integers, and N is not equal to M,

wherein the bonding region comprises a first bonding region and a second bonding region, the sensing region is located between the first bonding region and the second bonding region, the first lines extends to the first bonding region, the second lines extends to the second bonding region, and the first bonding region, the sensing region and the second bonding region are sequentially arranged along the first direction.

2. The touch panel of claim 1, wherein the second electrode portions of each of the second sensing series comprise two terminal electrode portions and at least one intermediate electrode portion, and the at least one intermediate electrode portion is located between the two terminal electrode portions.

3. The touch panel of claim 2, wherein the second lines are disposed between the terminal electrode portions of the second sensing series.

4. The touch panel of claim 3, wherein the bonding region is adjacent to ends of the first sensing series.

5. The touch panel of claim 1, wherein the bonding region is adjacent to ends of the first sensing series.

6. The touch panel of claim 1, wherein the first sensing series and the second electrode portions are made of a first layer, the second crossing portions are made of a second layer, and the first crossing portions and the second crossing portions are spaced apart by a first insulation layer.

7. The touch panel of claim 6, wherein the second lines are made of the first layer, and the second line connected to the N^th second sensing series and the second crossing portion of the M^th second sensing series are spaced apart by the first insulation layer.

8. The touch panel of claim 6, wherein the second lines are made of a third layer, the first layer and the second layer are located between the third layer and the substrate, and the second line connected to the N^th second sensing series and the second crossing portion of the M^th second sensing series are spaced apart by a second insulation layer.

9. The touch panel of claim 1, wherein the second sensing series and the first electrode portions are made of a first layer, the first crossing portions are made of a second layer, and the first crossing portions and the second crossing portions are spaced apart by an insulation layer.

10. The touch panel of claim 9, wherein the second lines are made of the second layer, and the second line connected to the N^th second sensing series and the second crossing portion of the M^th second sensing series are spaced apart by the insulation layer.

11. The touch panel of claim 1, wherein a length distribution of the second lines is gradually increased before gradually decreasing in sequence along the second direction.

12. The touch panel of claim 1, further comprising a cover plate, and the substrate being attached on the cover plate.

13. The touch panel of claim 12, wherein the cover plate comprises a light shielding region, and the light shielding region blocks the bonding region.

14. The touch panel of claim 1, wherein the first sensing series are disposed in parallel.

15. The touch panel of claim 1, wherein the second sensing series are disposed in parallel.

16. An electronic device, comprising:

a display panel having a display surface; and

the touch display panel as claimed in claim 1 disposed above the display surface.

17. The electronic device of claim 16, wherein the touch panel further comprises a cover plate, the substrates is attached on the cover plate, and the cover plate comprises a light shielding region, wherein a border width of the light shielding region at two opposite sides along the second direction is less than 5 mm.