Touch window having improved electrode pattern structure

Patent metadata

Field	Value
Publication number	US-2016306453-A1
Application number	US-201615195148-A
Country	US
Kind code	A1
Filing date	Jun 28, 2016
Priority date	Jun 29, 2012
Publication date	Oct 20, 2016
Grant date	—

Abstract

Disclosed is a touch window, The touch window includes a cover window, a first sensing electrode layer formed on a view area (V/A) of the cover window and including a first electrode pattern including a first unit cell electrode pattern, and a second sensing electrode layer formed on the view area and including a second electrode pattern which crosses the first electrode pattern and includes a second unit cell electrode pattern. A ratio of an area of the space part between a first unit cell electrode pattern and a second unit cell electrode pattern adjacent to the first unit cell electrode pattern with respect to an area of the first unit cell electrode pattern of the first electrode pattern or the second unit cell electrode pattern of the second electrode pattern is in the range of 10% to 20%.

First claim

What is claimed is:

1 . A touch window comprising:
a cover window including a view area and a dead area, a first sensing electrode pattern and a second sensing electrode pattern crossing the first sensing electrode pattern disposed on the view area; wherein the first sensing electrode pattern comprises a first unit cell electrode pattern and a first lead electrode connecting to adjacent the first unit cell electrode patterns, wherein the second sensing electrode pattern comprises a second unit cell electrode pattern and a second lead electrode connecting to adjacent the second unit cell electrode patterns, a space part between a pattern of the first unit cell electrode patterns and two patterns of the second unit cell electrode patterns adjacent to said pattern of the first unit cell electrode patterns; and a dummy pattern in the space part, wherein a ratio of an area of the space part to an area of the first unit cell electrode pattern or the second unit cell electrode pattern has in a range of 10% to 20%, wherein the dummy pattern disposed between the first unit cell electrode pattern and the second unit cell electrode pattern, and wherein the dummy pattern, the first unit cell electrode pattern and second unit cell electrode pattern disposed on the same plane.

2 . The touch window of claim 1 , wherein a length of the first lead electrode or a length of the second lead electrode is 30 μm or less.

3 . The touch window of claim 1 , wherein a width of the space part is 30 μm or less.

4 . The touch window of claim 1 , wherein the first unit cell electrode pattern and the second unit cell electrode pattern comprise at least one of indium-tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), carbon nano-tube (CNT), graphene, silver nano-wire (Ag NW), and conductive polymer.

5 . The touch window of claim 4 , wherein the dummy pattern comprises the same material as the first unit cell electrode pattern and the second unit cell electrode pattern.

6 . The touch window of claim 1 , wherein a distance between the first sensing electrode pattern and the dummy pattern is less than a width of the dummy pattern.

7 . The touch window of claim 1 , wherein the dummy pattern is spaced apart from the first unit cell electrode pattern and the second unit cell electrode pattern.

8 . The touch window of claim 1 , wherein the first lead electrode is integrally formed with the first unit cell electrode patterns.

9 . The touch window of claim 1 , wherein a width of the second lead electrode is less than a width of the space part.

10 . The touch window of claim 1 , wherein a plurality of dummy patterns are disposed between a plurality of first sensing electrode patterns and a plurality of second sensing electrode patterns.

11 . A touch window comprising:
a cover window including a view area and a dead area; a substrate disposed on the cover window; a first sensing electrode pattern and a second sensing electrode pattern crossing the first sensing electrode pattern disposed on the view area of the substrate, wherein the first sensing electrode pattern comprises a first unit cell electrode pattern and a first lead electrode connecting to adjacent the first unit cell electrode patterns, wherein the second sensing electrode pattern comprises a second unit cell electrode pattern and a second lead electrode connecting to adjacent the second unit cell electrode patterns, a space part between a pattern of the first unit cell electrode patterns and two patterns of the second unit cell electrode patterns adjacent to said pattern of the first unit cell electrode patterns,; and a dummy pattern in the space part, wherein a ratio of an area of the space part to an area of the first unit cell electrode pattern or the second unit cell electrode pattern has in a range of 10% to 20%, wherein the dummy pattern disposed between the first unit cell electrode pattern and the second unit cell electrode pattern, and wherein the dummy pattern, the first unit cell electrode pattern and the second unit cell electrode pattern disposed on the same plane.

12 . The touch window of claim 11 , wherein a length of the first lead electrode or a length of the second lead electrode is 30 μm or less.

13 . The touch window of claim 11 , wherein a width of the space part is 30 μm or less.

14 . The touch window of claim 11 , wherein the first unit cell electrode pattern and the second unit cell electrode pattern comprise at least one of indium-tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), carbon nano-tube (CNT), graphene, silver nano-wire (Ag NW), and conductive polymer.

15 . The touch window of claim 14 , wherein the dummy pattern comprises the same material as the first unit cell electrode pattern and the second unit cell electrode pattern.

16 . The touch window of claim 11 , wherein a height of a top surface of the first lead electrode different from a height of a top surface of the second electrode.

17 . The touch window of claim 11 , wherein the substrate comprises a film material or glass.

18 . The touch window of claim 17 , wherein the film material comprise at least one of PET, PC, PES, PI, and PMMA.

19 . The touch window of claim 11 , wherein a thickness of the cover window is greater than the thickness of the substrate.

20 . The touch window of claim 11 , wherein an adhesive layer between the cover window and the substrate.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Keun Sik

Classifications

• H01H1/06 Primary

  characterised by the shape or structure of the contact-making surface, e.g. grooved · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G02F1/13338

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