Touch window

Patent metadata

Field	Value
Publication number	US-10474305-B2
Application number	US-201816160777-A
Country	US
Kind code	B2
Filing date	Oct 15, 2018
Priority date	Nov 25, 2014
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A capacitive touch window includes: a substrate; a cover substrate; and an electrode, wherein a portion of the substrate is flat and another portion thereof is curved, and the electrode includes: a first sensing electrode; a second sensing electrode including second unit sensing electrodes spaced apart from the first sensing electrode; a bridge electrode connecting the second unit sensing electrodes; and an insulating layer between the first sensing electrode and the bridge electrode. The first and second sensing electrodes are disposed on a same surface of the substrate. The bridge electrode includes: a first mesh line having a first width; a second mesh line having a second width; and a first cross area in which the first and second mesh lines cross each other, the first cross area having a third width, wherein the third width is 2 to 5 times the first width and the second width.

First claim

What is claimed is:

1. A capacitive touch window comprising:
a substrate including a first surface and a second surface opposite the first surface;
a cover substrate on the substrate; and
an electrode on the substrate,
wherein the electrode comprises:
a first sensing electrode on the first surface of the substrate facing the cover substrate, and extending in one direction;
a second sensing electrode on the second surface of the substrate, and extending in another direction different from the one direction;
a first wire electrode electrically connected to the first sensing electrode, and disposed on the first surface of the substrate; and
a second wire electrode electrically connected to the second sensing electrode, and disposed on the second surface of the substrate,
wherein each of the first and second sensing electrodes comprises:
a first mesh line extending in a first direction and having a first width;
a second mesh line extending in a second direction different from the first direction and having a second width;
a cross area in which the first and second mesh lines cross each other, the cross area having a third width, the third width being a diagonal of the cross area; and
opening parts formed by the first and second mesh lines; and
a protective layer disposed on the second surface of the substrate,
wherein each of the first width, the second width is in the range of 0.1 μm to 10 μm, and
wherein the third width is 2 to 10 times each of the first width and the second width.

2. The capacitive touch window of claim 1 , wherein the cover substrate and the substrate include an active area and an unactive area,
wherein the first and second sensing electrodes disposed on the active area and unactive area,
wherein the a first and second wire electrodes are disposed on the unactive area, and
wherein at least one of the sensing and wire electrodes has a mesh shape.

3. The capacitive touch window of claim 1 , wherein the protective layer is disposed on the second sensing electrode.

4. The capacitive touch window of claim 1 , wherein the second sensing electrode is disposed between the substrate and the protective layer.

5. The capacitive touch window of claim 1 , wherein the protective layer includes an adhesive material.

6. The capacitive touch window of claim 1 , wherein the protective layer makes direct contact with the electrode.

7. The capacitive touch window of claim 1 , wherein the protective layer covers the sensing electrode and the wire electrode.

8. The capacitive touch window of claim 1 , wherein the cover substrate is glass.

9. The capacitive touch window of claim 1 , further comprising an outer dummy layer disposed on the unactive area of the cover substrate,
wherein the first and second wire electrodes are disposed on the outer dummy layer.

10. The capacitive touch window of claim 1 , wherein the third width is defined as a distance between one contact point of the first and second mesh lines and another contact point of the first and second mesh lines, the one contact point and the other contact point facing each other.

11. The capacitive touch window of claim 1 , wherein the third width is 2 to 6 times each of the first width and the second width.

12. The capacitive touch window of claim 1 , wherein the protective layer has a thickness in a range of 2 μm to 30 μm.

13. A touch device comprising;
a display panel; and
a capacitive touch window on the display panel,
wherein the display panel comprises;
a first substrate;
a thin film transistor on the first substrate; and
an organic light emitting device or a liquid crystal device on the thin film transistor,
wherein the capacitive touch window comprises;
a substrate including a first surface and a second surface opposite the first surface;
a cover substrate on the substrate; and
an electrode on the substrate,
wherein the electrode comprises:
a first sensing electrode on the first surface of the substrate facing the cover substrate, and extending in one direction;
a second sensing electrode on the second surface of the substrate, and extending in another direction different from the one direction,
a first wire electrode electrically connected to the first sensing electrode, and disposed on the first surface of the substrate; and
a second wire electrode electrically connected to the second sensing electrode, and disposed on the second surface of the substrate,
wherein each of the first and second sensing electrodes comprises:
a first mesh line extending in a first direction and having a first width;
a second mesh line extending in a second direction different from the first direction and having a second width;
a cross area in which the first and second mesh lines cross each other, the cross area having a third width, the third width being a diagonal of the cross area; and
opening parts formed by the first and second mesh lines; and
a protective layer disposed on the second surface of the substrate,
wherein each of the first width, the second width is in the range of 0.1 μm to 10 μm, and
wherein the third width is 2 to 10 times each of the first width and the second width.

14. The touch device of claim 13 , wherein the cover substrate and substrate include an active area and an unactive area,
wherein the touch device further comprises an outer dummy layer disposed on the unactive area of the cover substrate, and
wherein the first and second wire electrodes are disposed on the outer dummy layer,
wherein first and second sensing electrodes disposed on the active area and unactive area.

15. The touch device of claim 13 , wherein the third width is defined as a distance between one contact point of the first and second mesh lines and another contact point of the first and second mesh lines, the one contact point and the other contact point facing each other.

16. The touch device of claim 13 , wherein the third width is 2 to 6 times each of the first width and the second width.

17. The touch device of claim 13 , wherein the protective layer has a thickness in a range of 2 μm to 30 μm.

18. The touch device of claim 13 , wherein the protective layer includes an adhesive material.

19. The touch device of claim 13 , wherein the protective layer covers the sensing electrode and the wire electrode.

20. A capacitive touch window comprising:
a substrate including a first surface and a second surface opposite the first surface;
a cover substrate on the substrate having an active area and an unactive area;
an electrode on the substrate; and
an outer dummy layer disposed on the unactive area,
wherein the electrode comprises:
a first sensing electrode on the first surface of the substrate facing the cover substrate, and extending in one direction;
a second sensing electrode on the second surface of the substrate, and extending in another direction different from the one direction;
a first wire electrode electrically connected to the first sensing electrode, and disposed on the first surface of the substrate; and
a second wire electrode electrically connected to the second sensing electrode, and disposed on the second surface of the substrate,
wherein each of the first and second sensing electrodes comprises:
a first mesh line extending in a first direction and having a first width;
a second mesh line extending in a second direction different from the first direction and having a second width;
a cross area in which the first and second mesh lines cross each other, the cross area having a

Assignees

• Lg Innotek Co Ltd

Inventors

• Han Jung Hyuck
• Choe Yu Lim
• Koo Chan Kyu
• Shin Jun Sik
• Yang Joon Hyuk
• Lee Seung Jin
• Jeon Yu Hong

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

• H05K2201/09272

  Layout details of angles or corners · CPC title

• H05K3/28

  Applying non-metallic protective coatings {(H05K3/0091 takes precedence; methods for intermediate insulating layers for build-up multilayer circuits H05K3/4673)} · CPC title

• H05K2201/09245

  Crossing layout · CPC title

• H05K1/0296

  Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18) · CPC title