Touch device structure having through holes

Patent metadata

Field	Value
Publication number	US-9870072-B2
Application number	US-201514633691-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Mar 3, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A digitizer includes a first substrate, a first electrode on the first substrate, a first insulating layer on the first electrode, and a second electrode on the first insulating layer. The first insulating layer is formed therein with a through hole to expose the first electrode, and the first and second electrodes make contact with each other through the through hole.

First claim

What is claimed is:

1. A digitizer comprising:
a first substrate;
a first electrode on the first substrate;
a first insulating layer on the first electrode; and
a second electrode on the first insulating layer,
wherein the first and second electrodes are provided in directions crossing each other,
wherein the first electrode is extended in a first direction,
wherein the second electrode is extended in a second direction,
wherein the first electrode includes a plurality of unit electrodes,
wherein the plurality of unit electrodes includes a first unit electrode, a second unit electrode, and a third unit electrode, the second unit electrode being provided between the first unit electrode and the third unit electrode,
wherein the first unit electrode, the second unit electrode, and the third unit electrode are spaced from each other,
wherein the first insulating layer is formed therein with a plurality of through holes to expose the first electrode,
wherein the plurality of through holes include a first through hole exposing the first unit electrode at a location in which the second electrode crosses the first unit electrode; and a second through hole exposing the third unit electrode at a location in which the second electrode crosses the third unit electrode,

wherein a loop-shape is formed by connecting the first unit electrode to the second electrode through the first through hole and connecting the second electrode to the third unit electrode through the second through hole, and
wherein the plurality of through holes are not provided on the second unit electrode between the first through hole and the second through hole.

2. The digitizer of claim 1 , wherein the first and second electrodes comprise at least one of metals comprising gold (Au), silver (Ag), copper (Cu), molybdenum (Mo), nickel (Ni), and chromium (Cr).

3. The digitizer of claim 1 , wherein a metallic layer is provided on at least one of the first and second electrodes.

4. The digitizer of claim 3 , wherein the metallic layer includes conductive ink or conductive paste.

5. The digitizer of claim 4 , wherein the conductive ink or the conductive paste includes a conductive particle, and the conductive particle includes at least one of metals comprising nickel (Ni), copper (Cu), and chromium (Cr).

6. The digitizer of claim 3 , wherein the metallic layer includes a metallic oxide layer.

7. The digitizer of claim 6 , wherein the metallic oxide layer includes a copper oxide layer or a silver oxide layer.

8. The digitizer of claim 3 , wherein the metallic layer is provided on an entire surface of at least one of the first and second electrodes.

9. The digitizer of claim 3 , wherein the metallic layer includes a first metallic layer on the first electrode and a second metallic layer on the second electrode, the first metallic layer is provided on an entire surface of the first electrode, and the second metallic layer is provided on an entire surface of the second electrode.

10. The digitizer of claim 3 , wherein the metallic layer has a thickness in a range of 1 μm to 10 μm.

11. The digitizer of claim 3 , wherein at least one of the first and second electrodes includes a material different from a material constituting the metallic layer.

12. The digitizer of claim 3 , wherein at least one of the first and second electrodes includes a material corresponding to a material constituting the metallic layer.

13. The digitizer of claim 1 , further comprising a second insulating layer on the second electrode.

14. The digitizer of claim 1 , further comprising a shielding layer on the first substrate.

15. The digitizer of claim 1 , further comprising a ground electrode on the first substrate.

16. The digitizer of claim 1 , wherein at least one of the first and second electrodes has a thickness in a range of 9 μm to 50 μm.

17. The digitizer of claim 1 , further comprising a second substrate on the first insulating layer, wherein the second electrode is provided on the second substrate, and the digitizer further comprises a connection part to connect the first and second electrodes with each other through the through hole.

18. The digitizer of claim 17 , wherein the connection part includes silver paste.

19. The digitizer of claim 17 , wherein at least one of the first and second substrates includes polyethylene terephthalate (PET) or polyimide (PI).

20. The digitizer of claim 1 , wherein at least one of the first and second electrodes has a curved surface.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Sun Hwa
• Oem Seong Su
• Ku Dae Young
• You Young Sun
• Paik Jee Heum
• Son Hyo Won
• Jung Eun Young
• Jin Kwang Yong

Classifications

• G06F3/046

  by electromagnetic means · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F2203/04103

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

• G06F2203/04104

  Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger · CPC title