Touch window and touch device including the same

Patent metadata

Field	Value
Publication number	US-9851859-B2
Application number	US-201414333255-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Jul 16, 2013
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

Disclosed is a touch window including a substrate, and an electrode part provided on the substrate to detect a position. The electrode part includes a base including an electrode.

First claim

What is claimed is:

1. A touch window comprising:
a substrate having an active area and an inactive area;
an electrode part provided on the active area of the substrate to detect a position; and
a wire provided on the inactive area of the substrate to connect with the electrode part,
wherein the electrode part comprises a base and an electrode on the base,
wherein the base and the electrode have a same pattern,
wherein the base comprises photosensitive material,
wherein the electrode comprises a metallic nanowire,
wherein the electrode part includes a first electrode unit extending in a first direction and a second electrode unit extending in a second direction crossing the first direction,
wherein the first electrode unit and the second electrode unit are disposed on planes parallel to a plane on which the substrate is disposed,
wherein an intermediate layer is disposed between the first electrode unit and the second electrode unit,
wherein the intermediate layer comprises dielectric material;
wherein a total thickness of the substrate, the first electrode unit, the intermediate layer, and the second electrode unit is in a range of 90 μm to 110 μm;
wherein a base of the first electrode unit is directly in contact with the substrate,
wherein a base of the second electrode unit is directly in contact with the intermediate layer,
wherein the electrode of the first electrode unit is disposed between the intermediate layer and the base of the first electrode unit,
wherein the wire includes a first wire connecting the first electrode part and a second wire connecting the second electrode unit,
wherein the intermediate layer includes a hole,
wherein the hole is formed only on the second wire,
wherein a wire connecting part is disposed in the hole and at an end portion of the second electrode unit,
wherein the second electrode unit is connected with the second wire through the wire connecting part,
wherein an entire top surface of the intermediate layer is planar, and
wherein an entire top surface of the second electrode unit is planar.

2. The touch window of claim 1 , further comprising a cover window on the substrate.

3. The touch window of claim 1 , wherein the electrode part has a thickness in a range of 1 μm to 6 μm.

4. The touch window of claim 1 , wherein the electrode part has a thickness in a range of 2 μm to 5 μm.

5. The touch window of claim 1 , wherein the base comprises a first base unit and a second base unit on the first base unit.

6. The touch window of claim 5 , wherein the electrode is provided on the second base unit, and the electrode and the second base unit have a same pattern.

7. The touch window of claim 1 , wherein the base includes the photosensitive material.

8. The touch window of claim 1 , wherein the electrode has an interconnecting structure.

9. The touch window of claim 1 , wherein the electrode part comprises a photo sensitive nanowire film.

10. The touch window of claim 1 , wherein the electrode has concentrations of interconnecting structures that are higher when the interconnecting structures are more proximate toward a surface of the base.

11. The touch window of claim 1 , wherein the electrode is provided within a distance of 1 μm from a surface of the base.

12. The touch window of claim 1 , wherein the electrode is provided within a distance of 100 nm from a surface of the base.

13. A touch window comprising:
a substrate having an active area and an inactive area;
first and second electrode parts on the active area of the substrate;
a wire provided on the inactive area of the substrate to connect the first and second electrode parts;
an intermediate layer between the first and second electrode parts; and
an electrode pad positioned at an end of the wire;
wherein the first and second electrode parts include materials different from each other,
wherein one of the first and second electrode parts comprises metallic material,
wherein the metallic material is provided in a shape of a mesh,
wherein the other of the first and second electrode parts comprises photosensitive material and a metal nanowire provided in the photosensitive material,
wherein the metal nanowire has a diameter in a range of 20 nm to 100 nm,
wherein the metal nanowire is disposed at an area having a depth of 100 nm with respect to a lower portion or an upper portion of one of the first and the second electrode parts,
wherein the wire includes a first wire connecting the first electrode part and a second wire connecting the second electrode part,
wherein one of the first and second wires has a thickness greater than one of the first and second electrode parts,
wherein the electrode pad is connected to a printed circuit board,
wherein an entire top surface of the intermediate layer is planar, and
wherein an entire top surface of the second electrode part is planar.

14. The touch window of claim 13 , wherein the first and second electrode parts are formed on parallel planes.

15. The touch window of claim 13 , wherein the first and second electrode parts are formed on mutually different planes.

16. The touch window of claim 15 , wherein the intermediate layer has a thickness smaller than a thickness of the substrate, and
wherein the intermediate layer has a thickness that is 0.05 times to 0.5 times greater than a thickness of the substrate.

17. A touch window comprising:
a substrate having an active area and an inactive area;
first and second electrode parts on the active area of the substrate;
a wire provided on the inactive area of the substrate to connect the first and second electrode parts,
wherein the first electrode part comprises a first sensor part and a first sensor connecting part to connect with the first sensor part,
wherein the second electrode part comprises a second sensor part,
wherein the first sensor connecting part includes material different from materials of the first and second sensor parts, and
wherein the first and second sensor parts each directly makes contact with the substrate; and
an insulating part provided between the first sensor connecting part and the second sensor part,
wherein the insulating part includes transparent insulating material,
wherein the first sensor connecting part comprises photosensitive material and a metal nanowire provided in the photosensitive material,
wherein the wire has a thickness smaller than that of the first sensor connecting part,
wherein the first sensor connecting part includes a base and an electrode provided at a lower portion of the base,
wherein the electrode includes the metal nanowire,
wherein a top surface of the insulating part is planar,
wherein the entire top surface of the insulating part contacts the first sensor connecting part, and
wherein a top surface of the first sensor connecting part is planar.

18. The touch window of claim 17 , wherein the insulating part includes metallic oxide or acrylic resin.

19. The touch window of claim 13 , wherein the intermediate layer is provided in a space of the first electrode part.

20. The touch window of claim 1 , wherein the wire is provided in a mesh pattern.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Soung Kyu
• Ryu Ji Chang
• Kwon Do Youb
• Kang Mun Suk
• Lee Gyu Rin
• Lee Jin Seok
• Her Jae Hak

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F2203/04103

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

• G06F3/045 Primary

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title