Touch window and touch device including the same

• US 9,952,723 B2
• Filed: 11/21/2014
• Issued: 04/24/2018
• 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): Patel, Kumar
• Assistant Examiner(s): WOO, KUO-KONG
• Application Number:
  US14/550,435
• Publication Number:
  US 20150145824A1
• Time in Patent Office: 1,250 Days
• Field of Search: 345173, 345174, 178 1806, 324 715, 250200, 257 9
• 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:

a cover substrate;

an electrode substrate under the cover 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 cover substrate; 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 detct an input position,

wherein a material of the electrode substrate is different from a material of the intermediate layer, wherein the first and second electrodes are provided between the cover substrate and the first surface of the electrode substrate,

wherein the cover substrate includes glass,

wherein at least one of the cover substrate and the electrode substrate is bent such that a first portion of a surface is flat and a second portion of the surface is curved, and

wherein an end of at least one of the cover substrate and electrode substrate is bent to have a curved surface.

2. The touch window of claim 1, wherein a material of the first electrode is different from a material of the second electrode.

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

4. The touch window of claim 1, wherein a thickness of the intermediate layer is 0.05 to 0.5 times compared to a thickness of the electrode substrate.

5. 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.

6. The touch window of claim 1, wherein the cover substrate, the electrode substrate, the first electrode, the intermediate layer and the second electrode are sequentially illuminated.

7. The touch window of claim 1, wherein the cover substrate, the second electrode, the intermediate layer, the first electrode, and the electrode substrate are sequentially illuminated.

8. The touch window of claim 1, wherein the second electrode includes a conductive pattern.

9. The touch window of claim 1, wherein the second electrode includes a base substrate and a connecting structure disposed in the base substrate.

10. The touch window of claim 9, wherein the base substrate includes a photosensitive material.

11. The touch window of claim 9, wherein concentration of the connecting structure is gradually increased as approaching to a surface of the base substrate.

12. The touch window of claim 1, wherein the second electrode includes a photosensitive nanowire film.

13. A touch device comprising:

a display panel;

a touch window on the display panel;

a cover substrate;

an electrode substrate under the cover substrate;

an intermediate layer on the electrode substrate; and

an electrode provided on the electrode substrate;

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

wherein the electrode substrate includes a first surface facing the cover substrate 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 material of the electrode substrate is different from a material of the intermediate layer,

wherein the electrode substrate is bendable,

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

wherein cover substrate includes a glass,

wherein at least one of the cover substrate and the electrode substrate is bent such that a first portion of a surface is flat and a second portion of the surface is curved, and

wherein an end of at least one of cover substrate and the electrode substrate is bent to have a curved surface.

14. The touch device of claim 13, wherein the display panel includes:

a first substrate;

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

a second substrate on the first substrate.