Touch window and touch device including the same

Patent metadata

Field	Value
Publication number	US-9959003-B2
Application number	US-201414516697-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Oct 17, 2013
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Disclosed is a touch window including a sensing electrode to sense a position, and a wire to electrically connect the sensing electrode. A width of the sensing electrode is variable in the sensing electrode.

First claim

What is claimed is:

1. A touch window comprising:
a substrate;
a plurality of sensing electrodes on the substrate; and
at least one wire to electrically connect to a first one of the sensing electrodes on the substrate,
wherein the wire includes:
an electrode pad at one end of the wire connected to a printed circuit board; and
a wire pad at another end of the wire connected to the first one of the sensing electrodes,

wherein the first one of the plurality of sensing electrodes includes a first mesh line and a second mesh line, wherein the first mesh line physically contacts the wire pad, and the second mesh line physically contacts the wire pad,
wherein the first mesh line has a first sensing part and a second sensing part, wherein the second sensing part of the first mesh line physically contacts the wire pad,
wherein a first width of the second sensing part of the first mesh line in a direction parallel to the wire pad is different from a second width of the first sensing part of the first mesh line.

2. The touch window of claim 1 , wherein the first sensing part of the first mesh line physically contacts the second sensing part of the first mesh line at a contact area.

3. The touch window of claim 2 , wherein the first width of the second sensing part of the first mesh line increases from the contact area to the wire pad.

4. The touch window of claim 1 , wherein the second mesh line physically contacts the wire pad,
wherein the second mesh line has a first sensing part and a second sensing part, wherein the second sensing part of the second mesh line physically contacts the wire pad, and
wherein a first width of the second sensing part of the second mesh line in a direction parallel to the wire pad is different from a second width of the first sensing part of the second mesh line.

5. The touch window of claim 4 , wherein the first sensing part of the second mesh line physically contacts the second sensing part of the second mesh line at a contact area, and wherein the first width of the second sensing part of the second mesh line increases from the contact area to the wire pad.

6. The touch window of claim 1 , wherein a second one of the plurality of sensing electrodes includes a third mesh line, wherein the third mesh line physically contacts another wire pad,
wherein the third mesh line has a first sensing part and a second sensing part, wherein the second sensing part of the third mesh line physically contacts the another wire pad, and
wherein a first width of the second sensing part of the third mesh line in a direction parallel to the another wire pad is different from a second width of the first sensing part of the third mesh line.

7. The touch window of claim 6 , wherein the first sensing part of the third mesh line physically contacts the second sensing part of the third mesh line at a contact area, and wherein the first width of the second sensing part of the third mesh line increases from the contact area to the another wire pad.

8. The touch window of claim 1 , wherein an opening is provided between the second sensing part of the first mesh line and the second mesh line.

9. The touch window of claim 8 , wherein the first sensing part of the first mesh line physically contacts the second sensing part of the first mesh line at a contact area, wherein the opening between the second sensing part of the first mesh line and the second mesh line is decreasing from the contact area to the wire pad.

10. The touch window of claim 1 , wherein the second width of the first sensing part of the first mesh line is in the range of 2 μm to 5 μm.

11. The touch window of claim 1 , wherein the plurality of sensing electrodes includes at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), or an alloy thereof.

12. The touch window of claim 1 , wherein the direction is a longest length of the wire pad.

13. The touch window of claim 1 , wherein the first width is a maximum width of the second sensing part of the first mesh line.

14. The touch window of claim 1 , wherein the entire width of the second sensing part of the first mesh line includes a conductive material, and an entire width of the second mesh line includes a conductive material.

15. A touch device comprising:
a display panel; and
a touch window on the display panel;
wherein the display panel includes:
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 window includes:
a substrate;
a plurality of sensing electrodes on the substrate; and
at least one wire to electrically connect to a first one of the sensing electrodes on the substrate, and

wherein the wire includes:
an electrode pad at one end of the wire connected to a printed circuit board; and
a wire pad at another end of the wire connected to the first one of the sensing electrodes,

wherein the first one of the plurality of sensing electrodes includes a first mesh line and a second mesh line, wherein the first mesh line physically contacts the wire pad, and the second mesh line physically contacts the wire pad,
wherein the first mesh line has a first sensing part and a second sensing part, wherein the second sensing part of the first mesh line physically contacts the wire pad,
wherein a first width of the second sensing part of the first mesh line in a direction parallel to the wire pad is different from a second width of the first sensing part of the first mesh line, and
wherein the substrate is an encapsulation substrate.

16. The touch device of claim 15 , wherein the first sensing part of the first mesh line physically contacts the second sensing part of the first mesh line at a contact area, wherein the first width of the second sensing part of the first mesh line increases from the contact area to the wire pad.

17. The touch device of claim 15 , wherein the second mesh line physically contacts the wire pad,
wherein the second mesh line has a first sensing part and a second sensing part, wherein the second sensing part of the second mesh line physically contacts the wire pad, and
wherein a first width of the second sensing part of the second mesh line in a direction parallel to the second mesh line is different from a second width of the first sensing part of the third mesh line.

18. The touch device of claim 15 , wherein an opening is provided between the second sensing part of the first mesh line and the second mesh line.

19. The touch device of claim 18 , wherein the first sensing part of the first mesh line physically contacts the second sensing part of the first mesh line at a contact area, wherein the opening between the second sensing part of the first mesh line and the second mesh line is decreasing from the contact area to the wire pad.

20. The touch device of claim 15 , wherein the second width of the first sensing part of the first mesh line is in the range of 2 μm to 5 μm.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Jae Hong
• Koo Chan Kyu
• Kim Hyun Soo
• Shin Jun Sik
• Yang Joon Hyuk

Classifications

• G06F3/045 Primary

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title