Bendable touch window and touch device with the same

Patent metadata

Field	Value
Publication number	US-10013084-B2
Application number	US-201514624962-A
Country	US
Kind code	B2
Filing date	Feb 18, 2015
Priority date	Feb 17, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A touch window includes a substrate; a sensing electrode disposed on the substrate in a bending direction of the substrate; and a wire for electrically connecting the sensing electrode. The sensing electrode includes a first sensing electrode extending in one direction on an effective area; and a second sensing electrode extending in a direction different from the extension direction of the first sensing electrode. The wire includes a first wire connected to the first sensing electrode; and a second wire connected to the second sensing electrode.

First claim

What is claimed is:

1. A touch device for a mobile terminal, comprising;
a display panel;
a curved touch window on the display panel; and
a polarizing plate between the display panel and the curved touch window,
wherein the display panel is an organic electroluminescence light emitting device,
wherein the display panel includes a first substrate and a second substrate,
wherein a thin film transistor and an organic light-emitting device are formed on the first substrate,
wherein the second substrate is an encapsulation substrate on the organic light-emitting device, and
wherein the curved touch window includes:
a substrate;
a cover substrate on the substrate and including an active area and an inactive area;
a sensing electrode and a wire disposed on the substrate;
a printing layer between the substrate and the cover substrate; and
an adhesive layer disposed between the cover substrate and the substrate
wherein the cover substrate is curved,
wherein the cover substrate includes a glass,
wherein a touch instruction is input through the active area,
wherein the substrate includes polyethylene terephthalate (PET),
wherein the substrate comprises a first surface facing the cover substrate and a second surface, which is opposite to the first surface,
wherein the sensing electrode is provided between the cover substrate and the first surface of the substrate,
wherein the sensing electrode includes:
a first sensing electrode disposed on the first surface of the substrate and extending in one direction on an effective area;
a second sensing electrode disposed on the first surface of the substrate and extending in a direction different from the extension direction of the first sensing electrode,
wherein the first sensing electrode and the second sensing electrode include indium zinc oxide; and
bridge electrodes are disposed on the active area to connect portions of the second sensing electrode that are spaced apart from each other,
wherein the bridge electrode and the sensing electrode include different materials,
wherein one end of the wire is electrically connected to the sensing electrode, other end of the wire is connected to a printed circuit board and drawn to an upper end or a lower end of the substrate,
wherein the wire includes:
a first wire connected to the first sensing electrode; and
a second wire connected to the second sensing electrode,
wherein the wire includes at least one of nickel (Ni) or copper (Cu),
wherein the printing layer is disposed between the cover substrate and the substrate,
wherein the printing layer is formed of a film, and
wherein the polarizing plate is a linear polarizing plate or an anti-reflection polarizing plate.

2. The touch curved device of claim 1 , wherein another adhesive layer is disposed between the display panel and the curved touch window, and the other adhesive layer includes an optical clear adhesive (OCA).

3. The touch device of claim 1 , wherein the sensing electrode has a rhombus shape, and the bridge electrode has a bar shape.

4. The touch curved device of claim 1 , wherein the sensing electrode is provided over a compressed surface of the substrate.

5. The touch curved device of claim 1 , wherein the sensing electrode has a conductive pattern.

6. The touch curved device of claim 1 , wherein the cover substrate is bent inward about the first surface of the substrate.

7. The touch curved device of claim 1 , wherein a pad part is disposed on the other end of the wire.

8. The touch curved device of claim 1 , wherein the cover substrate includes a first surface facing the substrate and a second surface opposite the substrate, and wherein the cover substrate is bent inward about the first surface of the cover substrate.

9. The touch curved device of claim 1 , wherein the adhesive layer includes an optical clear adhesive (OCA).

Assignees

• Lg Innotek Co Ltd

Inventors

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

Classifications

• G06F2203/04103

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

• G06F2203/04102

  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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title