Touch window and touch device including the same

• US 10,353,524 B2
• Filed: 03/07/2018
• Issued: 07/16/2019
• Est. Priority Date: 11/22/2013
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Park, Soung Kyu, Kang, Mun Suk, Kwon, Do Youb, Ryu, Ji Chang, Yun, Seok Pyo, Lee, Gyu Rin, Lee, Jin Seok, Lee, Chung Wan, Her, Jae Hak
• Primary Examiner(s): Sadio, Insa
• Application Number:
  US15/914,300
• Publication Number:
  US 20180196551A1
• Time in Patent Office: 496 Days
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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 window includes a first electrode disposed on an electrode substrate, an intermediate layer on the electrode substrate, and a second electrode disposed on the intermediate layer. A material of the electrode substrate is different from a material of the intermediate layer.

Claims

1. A touch window comprising:

an electrode substrate;

an intermediate layer on the electrode substrate; and

an electrode provided on the electrode substrate,

wherein the electrode substrate is flexible,

wherein the electrode includes a first electrode and a second electrode,

wherein the electrode substrate includes a first surface and a second surface opposite the first surface,

wherein the first and second electrodes are provided on the first surface of the electrode substrate,

wherein the first electrode and the second electrode are configured to detect an input position,

wherein the intermediate layer includes silicon (Si),

wherein the electrode substrate is bent such that a first portion of the electrode substrate includes a flat surface and a second portion of the electrode substrate includes a curved surface,

wherein an outer end of the electrode substrate includes the curved surface, and

wherein at least one edge of the electrode substrate includes an edge surface that is inclined to be greater than 0 degrees and less than 90 degrees relative to the flat surface of the electrode substrate.

2. The touch window of claim 1, wherein the electrode substrate includes a polyethylene terephthalate (PET).

3. The touch window of claim 1, wherein the first and second electrodes include chrome (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), and an alloy thereof.

4. The touch window of claim 1, wherein the first and second electrodes include conductive pattern, and the first and second electrodes are disposed in a mesh shape.

5. The touch window of claim 4, wherein the first and second electrodes include a pattern opening and a pattern line.

6. The touch window of claim 5, wherein a line width of the pattern line is in the range of 1 μ

m to 5 μ

m.

7. The touch window of claim 1, further comprising a wire connected with the electrode,

wherein the electrode and the wire are the same material.

8. The touch window of claim 7 wherein the wire includes chrome (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), and an alloy thereof.

9. The touch window of claim 1, wherein a thickness of the electrode is in the range of 1 μ

m to 6 μ

m.

10. The touch window of claim 1, wherein a material of the electrode substrate is different from a material of the intermediate layer.

11. The touch window of claim 1, wherein a thickness of the electrode substrate is different from a thickness of the intermediate layer.

12. The touch window of claim 1, wherein a first area for the first electrode is defined on the electrode substrate, a second area for the second electrode is defined on the intermediate layer, and the second area is smaller than the first area.

13. The touch device of claim 1, further including a cover window on the electrode substrate.

14. The touch window of claim 13, wherein the cover substrate, the second electrode, the intermediate layer, the first electrode, and the electrode substrate are sequentially illuminated.

15. A touch device comprising:

a display panel; and

a touch window on the display panel;

wherein touch window includes;

an electrode substrate;

an intermediate layer on the electrode substrate; and

an electrode provided on the electrode substrate;

wherein the electrode substrate is flexible,

wherein the electrode includes a first electrode and a second electrode,

wherein the electrode substrate includes a first surface facing the display panel and a second surface opposite the first surface,

wherein the first and second electrodes are provided on the second surface of the electrode substrate,

wherein the first electrode and the second electrode are configured to detect an input position,

wherein the intermediate layer includes silicon (Si),

wherein the display panel and the electrode substrate are bent such that a first portion includes a flat surface and a second portion includes a curved surface,

wherein an outer end of the display panel and the electrode substrate include the curved surface, and

wherein at least one edge of the electrode substrate includes an edge surface that is inclined to be greater than 0 degrees and less than 90 degrees relative to the flat surface.

16. The touch device of claim 15, wherein the display panel includes

a first substrate;

a thin film transistor and an organic light-emitting device on the first substrate; and

a second substrate on the first substrate.

17. The touch device of claim 16, wherein the second substrate is an encapsulation layer.

18. The touch device of claim 16, further including a cover window on the second substrate.

19. The touch device of claim 18, wherein the first and second electrodes are provided between the cover window and the first surface of the electrode substrate,

wherein the cover window includes a glass,

wherein the cover window is bent such that a first portion includes a flat surface and a second portion includes a curved surface, and

wherein an end of the cover window includes the curved surface.

20. The touch device of claim 15, wherein a material of the electrode substrate is different from a material of the intermediate layer.