Touch window having a sensing electrode with a variable width of a conductive line

Patent metadata

Field	Value
Publication number	US-10768766-B2
Application number	US-201815935665-A
Country	US
Kind code	B2
Filing date	Mar 26, 2018
Priority date	Oct 17, 2013
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

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 sensing electrode having a mesh shape that includes:
a plurality of first conductive lines extending in a first direction,
a plurality of second conductive lines extending in a second direction; and
a wire including a wire pad,
wherein the sensing electrode is provided in an active area and an unactive area of a substrate,
wherein an outer dummy layer defines the unactive area of the substrate,
wherein the wire pad includes a side in contact with the sensing electrode,
wherein the first conductive lines and the second conductive lines cross each other to form a plurality of connecting portions, the plurality of connecting portions including at least one first connecting portion closest to the wire pad and an adjacent connecting portion that is further from the wire pad than the first connecting portion, and
the at least one first connecting portion having an outer line portion of a specific one of the first and second conductive lines extending toward the wire pad and an inner line portion of the specific one of the first and second conductive lines extending toward the adjacent connecting portion, wherein the outer line portion of the at least one first connecting portion includes:
a first part of the specific one of the first and second conductive lines having a uniform width in the first direction, and
a second part of the specific one of the first and second conductive lines disposed between the wire pad and the first part,

wherein a width of the second part varies, in a direction parallel to the side of the wire pad, as the second part extends from the first part to the wire pad,
wherein the second part is provided in the unactive area of the substrate,
wherein the second part is adjacent to another second part, and a maximum width of the second part is less than a half of a pitch between the two adjacent second parts, and

wherein the sensing electrode is formed by etching metallic material on the substrate,
wherein an opening is formed by the first and second conductive lines,
wherein a maximum pitch between the two adjacent second parts is greater than a width of the opening,
wherein the width of the opening is defined as a distance between two adjacent first conductive lines or a distance between two adjacent second conductive lines,
wherein the first part has a first thickness in a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction,
wherein the second part has a thickness that increases, in the third direction, as the second part extends from the first part to the wire pad,
wherein the second part, having the thickness that increases, is provided in the unactive area of the substrate.

2. The touch window of claim 1 , wherein the width of the second part increases, in the direction parallel to the side of the wire pad, as the second part extends from the first part to the wire pad.

3. The touch window of claim 2 , wherein the maximum width of the second part is larger than the width of the first part.

4. The touch window of claim 3 , wherein the maximum width of the second part is longer than a width of one of the connecting portions.

5. The touch window of claim 2 , wherein a minimum width of the second part is same as the uniform width of the first part.

6. The touch window of claim 1 , wherein the second part is adjacent to the another second part, and distances between the two adjacent second parts, in the direction parallel to the side of the wire pad, are decreased as the second part extends from the first part to the wire pad.

7. The touch window of claim 6 , wherein the first part is adjacent to another first part, and the distances between the two adjacent second parts are different from a distance between the two adjacent first parts.

8. The touch window of claim 6 , wherein the first part is adjacent to another first part, and a distance between the two adjacent first parts, in the direction parallel to the side of the wire pad, is continually the same.

9. The touch window of claim 1 , wherein the width of the second part is different than the uniform width of the first part.

10. The touch window of claim 1 , further comprising a cover substrate, wherein the touch window has a plurality of sensing electrodes and a plurality of wires are in contact with the plurality of sensing electrodes.

11. The touch window of claim 1 , wherein the outer line portion directly contacts the wire pad, and another outer line portion directly contacts the wire pad.

12. A touch window comprising:
a sensing electrode having a mesh shape that includes:
a plurality of first conductive lines extending in a first direction;
a plurality of second conductive lines extending in a second direction; and
a wire including a wire pad,
wherein the sensing electrode is provided on an active area of a substrate and on an unactive area of the substrate,
wherein an outer dummy layer defines the unactive area of the substrate,
wherein the wire pad includes a side in contact with the sensing electrode,
wherein the first conductive lines and the second conductive lines cross each other to form a plurality of connecting portions, the plurality of connecting portions including at least one first connecting portion immediately adjacent to the wire pad and an adjacent connecting portion that is further from the wire pad than the first connecting portion, and
the at least one first connecting portion having an outer line portion of a specific one of the first and second conductive lines extending toward the wire pad and an inner line portion of the specific one of the first and second conductive lines extending toward the adjacent connecting portion,
wherein the outer line portion of the first connecting portion includes:
a first part of the specific one of the first and second conductive lines having a uniform width in the first direction, and
a second part of the specific one of the first and second conductive lines disposed between the wire pad and the first part,

wherein a width of the second part varies, in a direction parallel to the side of the wire pad, as the second part extends from the first part to the wire pad,
wherein the second part is provided on the unactive area of the substrate,
wherein the second part is adjacent to another second part, and a maximum width of the second part is less than a half of a pitch between the two adjacent second parts, and
wherein the sensing electrode is formed by etching metallic material on the substrate,
wherein an opening is formed by the first and second conductive lines,
wherein a maximum pitch between the two adjacent second parts is greater than a width of the opening,
wherein the width of the opening is defined as a distance between two adjacent first conductive lines or a distance between two adjacent second conductive lines,
wherein the first part has a first thickness in a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction,
wherein the second part has a thickness that increases, in the third direction, as the second part extends from the first part to the wire pad,
wherein the second part, having the thickness that increases, is provided in the unactive area of the substrate.

13. The touch window of claim 12 , wherein the width of the second part increases, in the direction parallel to the side of the wire pad, as the second part extends from the first part to the wire pad.

14. The touch window of claim 13 , wherein the width of the second part is different

Assignees

• Lg Innotek Co Ltd

Inventors

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

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/045 Primary

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