Touch window

Patent metadata

Field	Value
Publication number	US-10152188-B2
Application number	US-201815946890-A
Country	US
Kind code	B2
Filing date	Apr 6, 2018
Priority date	Apr 14, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

Disclosed is a touch window. The touch window includes a cover substrate; a substrate on the cover substrate; and an electrode on the substrate, wherein the substrate includes one surface facing the cover substrate and an opposite surface opposite to the one surface, the electrode is disposed on the opposite surface, and the cover substrate and the substrate have flexible curved surfaces.

First claim

What is claimed is:

1. A touch window comprising:
a substrate;
an electrode provided on the substrate;
a cover substrate provided on the substrate; and
an adhesive layer provided between the cover substrate and the substrate,
wherein the electrode includes:
a first sensing electrode extending in a first direction on a first surface of the substrate;
a second sensing electrode extending in a second direction that is different from the first direction on a second surface of the substrate; and
a wire electrode including a first wire electrode connected to the first sensing electrode, and a second wire electrode connected to the second sensing electrode,

wherein the first wire electrode and the second wire electrode are provided on different planes,
wherein the first sensing electrode and second sensing electrode have a mesh shape including a mesh line and a mesh opening,
wherein the first sensing electrode and the second sensing electrode include at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), or Molybdenum (Mo), and
wherein a line width of the mesh line is 1.5 μm to 5 μm.

2. The touch window of claim 1 , wherein the cover substrate includes a partial flat surface and a partial curved surface at an outermost edge of the cover substrate.

3. The touch window of claim 2 , wherein an area of the partial flat surface of the cover substrate is greater than an area of the partial curved surface of the cover substrate.

4. The touch window of claim 1 , further comprising an intermediate layer having an insulating material and provided between the cover substrate and the substrate,
wherein the intermediate layer includes a first surface facing the cover substrate and a second surface opposite to the first surface of the intermediate layer,
wherein the cover substrate, the intermediate layer and the substrate are bent in a direction of the second surface of the substrate.

5. The touch window of claim 1 , further comprising a blocking layer disposed between the cover substrate and the substrate.

6. The touch window of claim 5 , wherein the blocking layer blocks light having a wavelength of 300 nm to 800 nm.

7. The touch window of claim 5 , wherein the blocking layer includes a base and a dye provided in the base.

8. The touch window of claim 1 , wherein the substrate includes at least one of polyethylene terephthalate (PET), polycarbonate (PC), cyclic olefin copolymer (COC) or cyclic olefin polymer (COP).

9. The touch window of claim 2 , wherein the partial curved surface of the cover substrate is provided in two sides of the outermost edge of the cover substrate.

10. The touch window of claim 2 , wherein the substrate comprises a partial flat surface and a partial curved surface, and wherein the partial curved surface of the substrate is provided in two sides of an outermost edge of the substrate.

11. The touch window of claim 4 , wherein the intermediate layer includes a partial flat surface and a partial curved surface, and wherein the partial curved surface of the intermediate layer is provided in two sides of an outermost edge of the intermediate layer, wherein the intermediate layer and the substrate have a same shape.

12. The touch window of claim 4 , wherein the cover substrate is thicker than the substrate, and
wherein the cover substrate is thicker than the intermediate layer.

13. A touch device comprising:
a display panel; and
a touch window on the display panel,
wherein the display panel includes a first substrate,
wherein a thin film transistor is formed on the first substrate,
wherein the touch window includes:
a substrate; and
an electrode provided on the substrate;
a cover substrate provided on the substrate; and
an adhesive layer provided between the cover substrate and the substrate, wherein the electrode includes:
a first sensing electrode extending in a first direction on a first surface of the substrate;
a second sensing electrode extending in a second direction that is different from the first direction on a second surface of the substrate; and
a wire electrode including a first wire electrode connected to the first sensing electrode, and a second wire electrode connected to the second sensing electrode,
wherein the first wire electrode and the second wire electrode are provided on different planes,
wherein the first sensing electrode and second sensing electrode have a mesh shape including a mesh line and a mesh opening,
wherein the first sensing electrode and the second sensing electrode include at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), or Molybdenum (Mo), and
wherein a line width of the mesh line is 1.5 μm to 5 μm.

14. The touch device of claim 13 , wherein the cover substrate includes a partial flat surface and a partial curved surface at an outermost edge of the cover substrate, wherein an area of the partial flat surface of the cover substrate is greater than an area of the partial curved surface of the cover substrate.

15. The touch device of claim 13 , further comprising an intermediate layer having an insulating material and provided between the cover substrate and the substrate,
wherein the intermediate layer includes a first surface facing the cover substrate and a second surface opposite to the first surface of the intermediate layer.

16. The touch device of claim 13 , further comprising a blocking layer provided between the cover substrate and the substrate,
wherein the blocking layer blocks light having a wavelength of 300 nm to 800 nm.

17. The touch device of claim 15 , wherein the cover substrate, the intermediate layer and the substrate are bent in a direction of the second surface of the substrate,
wherein the substrate comprises a partial flat surface and a partial curved surface, and wherein the partial curved surface of the substrate is provided in two sides of an outermost edge of the substrate,
wherein the intermediate layer includes a partial flat surface and a partial curved surface, and wherein the partial curved surface of the intermediate layer is provided in two sides of an outermost edge of the intermediate layer,
wherein the cover substrate is thicker than the substrate, and
wherein the cover substrate is thicker than the intermediate layer.

18. The touch window of claim 1 , further comprising an insulator on the electrode, the insulator provided between the cover substrate and the substrate.

19. The touch window of claim 18 , wherein the electrode includes a ground wire provided on a same layer as the second sensing electrode.

20. The touch device of claim 15 , wherein the electrode includes a ground wire provided on a same layer as the second sensing electrode.

Assignees

• Lg Innotek Co Ltd

Inventors

• Ryu Ji Chang
• Lee Gyu Rin
• Park Soung Kyu
• Kang Mun Suk
• Kwon Do Youb
• Yun Seok Pyo
• Lee Jin Seok
• Lee Chung Wan
• Choi Gwang Hei
• Her Jae Hak

Classifications

• G06F2203/04102

  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 title

• 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

• G06F2203/04103

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

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0448 Primary

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title