Touch panel for narrowing bezel region and touch display device using the same

Patent metadata

Field	Value
Publication number	US-9952463-B2
Application number	US-201615180323-A
Country	US
Kind code	B2
Filing date	Jun 13, 2016
Priority date	Nov 13, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A touch panel for narrowing bezel region and a touch display device using the same is disclosed. The touch panel includes a first transparent substrate, a first conduction layer, a transparent optical glue layer, a second transparent substrate and a second conduction layer from bottom to top. A bezel region of the first transparent substrate is provided with first conduction pads respectively connected with second conduction pads respectively through first conduction wires. The second transparent substrate is provided with third conduction pads. The second transparent substrate is penetrated with penetrating holes respectively arranged over the second conduction pads and respectively neighboring the third conduction pads. A third conduction layer is arranged on the third conduction pads and fills the penetrating holes. The second conduction pads are respectively connected with the third conduction pads through the third conduction layer in the penetrating holes.

First claim

What is claimed is:

1. A touch panel for narrowing bezel region comprising:
a first transparent substrate with a top surface thereof having a first sensing region and a first bezel region surrounding said first sensing region, and said first bezel region is provided with a plurality of first conduction pads, a plurality of first conduction wires and a plurality of second conduction pads, and said first conduction pads are respectively connected with said second conduction pads respectively through said first conduction wires;
a first conduction layer arranged on said first sensing region;
a transparent optical glue layer arranged on said first conduction layer and said first transparent substrate;
a second transparent substrate arranged on said transparent optical glue layer, and a top surface of said second transparent substrate has a second sensing region and a second bezel region surrounding said second sensing region, and said second bezel region is penetrated with a plurality of penetrating holes, and said penetrating holes are respectively arranged over said second conduction pads;
a second conduction layer arranged on said second sensing region, and said second bezel region is provided with a plurality of third conduction pads respectively neighboring said penetrating holes and connected with said second conduction layer, and said second conduction layer extends to said second bezel region, and said second conduction layer is arranged between said third conduction pads and said second transparent substrate; and
a third conduction layer arranged on said third conduction pads and filling said penetrating holes, and said second conduction pads respectively connected with said third conduction pads through said third conduction layer in said penetrating holes.

2. The touch panel for narrowing bezel region according to claim 1 , wherein said third conduction pads and said penetrating holes are arranged in an alternative way.

3. The touch panel for narrowing bezel region according to claim 1 , wherein said second bezel region is provided with a plurality of fourth conduction pads and a plurality of second conduction wires, and said second bezel region is penetrated with a penetrating opening, and said first bezel region is provided with fifth conduction pads, and a position of said penetrating opening corresponds to said positions of said fifth conduction pads, and said fourth conduction pads are connected with said penetrating opening respectively through said second conduction wires, and said third conduction layer fills said penetrating opening, and said second conduction wires are respectively connected with said fifth conduction pads through said third conduction layer in said penetrating opening.

4. The touch panel for narrowing bezel region according to claim 3 , wherein said second conduction layer extends to said second bezel region, and said second conduction layer is arranged between said fourth conduction pads and said second transparent substrate.

5. The touch panel for narrowing bezel region according to claim 3 , wherein said fourth conduction pads, said second conduction wires and said fifth conduction pads comprise metal or indium tin oxide (ITO).

6. The touch panel for narrowing bezel region according to claim 1 , wherein each said penetrating hole, each said second conduction pad and each said third conduction pad have shapes of rectangles, and long sides of each said second conduction pad are vertical to said first sensing region, and long sides of each said third conduction pad are vertical to said second sensing region, and neighboring said rectangles are parallel to each other.

7. The touch panel for narrowing bezel region according to claim 6 , wherein said third conduction layer has a width of larger than 60 um overlapping each said third conduction pad in a direction from said penetrating hole to said third conduction pad.

8. The touch panel for narrowing bezel region according to claim 6 , wherein each said third conduction pad has a width of larger than 100 um overlapping said second conduction pad corresponded thereof.

9. The touch panel for narrowing bezel region according to claim 6 , wherein each said third conduction pad has a width of larger than 80 um.

10. The touch panel for narrowing bezel region according to claim 6 , wherein a nearest horizontal distance between each said penetrating hole and said third conduction pad neighboring thereto is larger than 80 um.

11. The touch panel for narrowing bezel region according to claim 6 , wherein each said penetrating hole has a width of larger than 0 um and less than 300 um.

12. The touch panel for narrowing bezel region according to claim 1 , wherein a height between a bottom surface of said transparent optical glue layer and a top surface of said third conduction pad above is larger than 0 um and less than 30 um.

13. The touch panel for narrowing bezel region according to claim 12 , wherein said third conduction layer has a largest thickness larger than said height.

14. The touch panel for narrowing bezel region according to claim 1 , wherein said first conduction layer and said second conduction layer are transparent conduction layers.

15. The touch panel for narrowing bezel region according to claim 14 , wherein said transparent conduction layers comprise ITO.

16. The touch panel for narrowing bezel region according to claim 1 , wherein said first conduction pads, said first conduction wires, said second conduction pads, said third conduction pads, said third conduction layer comprise metal or ITO.

17. The touch panel for narrowing bezel region according to claim 1 , wherein said first transparent substrate and said second transparent substrate are transparent insulation substrates.

18. A touch display device comprising:
a lower transparent substrate;
a first polarizer arranged on a bottom surface of said lower transparent substrate;
a liquid crystal layer arranged on a top surface of said lower transparent substrate;
an upper transparent substrate arranged on said liquid crystal layer;
a second polarizer arranged on said upper transparent substrate;
a first transparent substrate arranged on said second polarizer, and a top surface of said first transparent substrate has a first sensing region and a first bezel region surrounding said first sensing region, and said first bezel region is provided with a plurality of first conduction pads, a plurality of first conduction wires and a plurality of second conduction pads, and said first conduction pads are respectively connected with said second conduction pads respectively through said first conduction wires;
a first conduction layer arranged on said first sensing region;
a transparent optical glue layer arranged on said first conduction layer and said first transparent substrate;
a second transparent substrate arranged on said transparent optical glue layer, and a top surface of said second transparent substrate has a second sensing region and a second bezel region surrounding said second sensing region, and said second bezel region is penetrated with a plurality of penetrating holes, and said penetrating holes are respectively arranged over said second conduction pads;
a second conduction layer arranged on said second sensing region, and said second bezel region is provided with a plurality of third conduction pads respectively neighboring said penetrating holes and connected with said second conduction layer, and said second conduction layer extends to said second bezel region, and said second conduction layer is arranged

Assignees

• Interface Optoelectronics Shenzhen Co Ltd
• General Interface Solution Ltd

Inventors

• Chen Chin-Yuan
• Chen Ping-Yang

Classifications

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/13458

  Terminal pads · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title