Touch window

Patent metadata

Field	Value
Publication number	US-2018024673-A1
Application number	US-201715709767-A
Country	US
Kind code	A1
Filing date	Sep 20, 2017
Priority date	Nov 25, 2014
Publication date	Jan 25, 2018
Grant date	—

Abstract

A capacitive touch window includes: a substrate; a cover substrate; and an electrode, wherein a portion of the substrate is flat and another potion 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; a cover substrate on the substrate; and an electrode on the substrate, wherein a portion of the substrate is flat, and another potion of the substrate is curved, wherein the other portion is an outmost end portion of the substrate, wherein the electrode comprises: a first sensing electrode on the substrate, and extending in one direction; a second sensing electrode on the substrate, and extending in other direction different from the one direction, and including second unit sensing electrodes spaced apart from the first sensing electrode; a bridge electrode connecting the second unit sensing electrodes to each other; and an insulating layer between the first sensing electrode and the bridge electrode, wherein a hole is formed on the insulating layer to expose the bridge electrode, wherein the first and second sensing electrodes are disposed on a same surface of the substrate, wherein the bridge electrode comprises: a first mesh line extending in a first direction and having a first width; a second mesh line extending in a direction different from the first direction and having a second width; a first cross area in which the first and second mesh lines cross each other, the first cross area having a third width, the third width being a diagonal of the first cross area; and opening parts formed by the first and second mesh lines, wherein the third width is 2 to 5 times the first width and the second width, wherein at least one of the first mesh line and the second mesh line of the bridge electrode is in contact with the second unit sensing electrodes by the hole.

2 . The capacitive touch window of claim 1 , wherein the first width, the second width and the third width are in the range of 0.1 μm to 10 μm.

3 . The capacitive touch window of claim 1 , wherein the first and second sensing electrode comprise:
a third mesh line extending in a first direction and having a fourth width; a fourth mesh line extending in a direction different from the first direction and having a fifth width; and a second cross area in which the third and fourth mesh lines cross each other, the second cross area having a sixth width, the sixth width being a diagonal of the second cross area, wherein the sixth width is 2 to 5 times the fourth width and the fifth width.

4 . The capacitive touch window of claim 3 , wherein the bridge electrode is in contact with at least one of the third mesh line and the fourth mesh line of the second unit sensing electrodes by the hole.

5 . The capacitive touch window of claim 3 , wherein at least one of the first mesh line and the second mesh line of the bridge electrode is in contact with at least one of the third mesh line and the fourth mesh line of the second unit sensing electrodes by the hole.

6 . The capacitive touch window of claim 3 , wherein at least one of the first, second, third and fourth mesh lines has a curved line and linear line.

7 . The capacitive touch window of claim 1 ,
wherein the substrate includes an active area and an unactive area, wherein the first and second sensing electrodes is disposed on the active area, wherein the electrode further comprises a wire electrode disposed on the unactive area, and wherein at least one of the sensing and wire electrodes has a mesh shape.

8 . The capacitive touch window of claim 1 , further comprising a protective layer disposed on the electrode,
wherein the protective layer has a thickness in a range of 2 μm to 30 μm.

9 . The capacitive touch window of claim 8 , wherein the protective layer includes an adhesive material.

10 . The capacitive touch window of claim 8 , wherein the protective layer includes acrylic resin.

11 . The capacitive touch window of claim 8 , wherein the protective layer makes direct contact with the electrode.

12 . The capacitive touch window of claim 8 , wherein the protective layer covers the electrode.

13 . The capacitive touch window of claim 3 , wherein thickness of the first, second, third and fourth mesh lines is in the range of 100 nm to 500 nm.

14 . The capacitive touch window of claim 3 , wherein at least one of the first, second, third and fourth mesh lines has a curved end at the cross area.

15 . The capacitive touch window of claim 1 , wherein the opening part has a polygonal shape including a rectangular shape, a diamond shape, a pentagon shape or a hexagonal shape, or a circular shape.

16 . 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 on the thin film transistor, wherein the touch capacitive window comprises; a substrate; a cover substrate on the substrate; and an electrode on the substrate, wherein a portion of the substrate is flat, and another potion of the substrate is curved, wherein the other portion is an outmost end portion of the substrate, wherein the electrode comprises: a first sensing electrode on the substrate, and extending in one direction; a second sensing electrode on the substrate, and extending in other direction different from the one direction, and including second unit sensing electrodes spaced apart from the first sensing electrode; a bridge electrode connecting the second unit sensing electrodes to each other; and an insulating layer between the first sensing electrode and the bridge electrode, wherein a hole is formed on the insulating layer to expose the bridge electrode, wherein the first and second sensing electrodes are disposed on a same surface of the substrate, wherein the bridge electrode comprises: a first mesh line extending in a first direction and having a first width; a second mesh line extending in a 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, wherein the third width is 2 to 5 times the first width and the second width, wherein at least one of the first mesh line and the second mesh line of the bridge electrode is in contact with the second unit sensing electrodes by the hole, and wherein the substrate is an encapsulation substrate.

17 . The touch device of claim 16 , wherein the first width, the second width and the third width are in the range of 0.1 μm to 10 μm.

18 . The touch device of claim 16 , wherein the first and second sensing electrode comprise:
a third mesh line extending in a first direction and having a fourth width; a fourth mesh line extending in a direction different from the first direction and having a fifth width; and a second cross area in which the third and fourth mesh lines cross each other, the second cross area having a sixth width, the sixth width being a diagonal of the second cross area, wherein the sixth width is 2 to 5 times the fourth width and the fifth width, and wherein the bridge electrode is in contact with at least one of the third mesh line and the fourth mesh line of the second unit sensing electrodes by the hole.

19 . The touch device of claim 18 , wherein at least one of the first mesh line and the second mesh line of the bridge electrode is in contact with at least one of the third mesh line and the fourth mesh lin

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

• 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

• H05K2201/09245

  Crossing layout · 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