Touch display device having touch display panel capable of preventing short circuit of adjacent tough lines

Patent metadata

Field	Value
Publication number	US-10761660-B2
Application number	US-201815994828-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Jun 1, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A touch display device includes a touch display panel on which a plurality of touch electrodes is arranged, at least one dam arranged in one direction in an outer edge area of the touch display panel and protruding from a bottom surface on which the dam is arranged, a plurality of touch lines arranged along a shape of the at least one dam in a direction intersecting the at least one dam, and a compensation pattern located in a lower boundary portion of the at least one dam between two adjacent touch lines among the plurality of touch lines.

First claim

What is claimed is:

1. A touch display device comprising:
a touch display panel on which a plurality of touch electrodes is arranged;
at least one dam arranged in one direction in an outer edge area of the touch display panel and protruding from a bottom surface on which the dam is arranged;
a plurality of touch lines arranged along a shape of the at least one dam in a direction intersecting the at least one dam; and
a compensation pattern located in a lower boundary portion of the at least one dam between two adjacent touch lines among the plurality of touch lines; and
an insulation layer covering the two adjacent touch lines,
wherein the compensation pattern includes a hole located in the insulation layer and separates the two adjacent touch lines from each other.

2. The touch display device of claim 1 , wherein the plurality of touch lines has a residual film extended to a portion where the touch lines meet the lower boundary portion of the at least one dam.

3. The touch display device of claim 2 , wherein the two adjacent touch lines include a first touch line and a second touch line.

4. The touch display device of claim 3 , wherein the residual film includes a first residual film extended from the first touch line toward the second touch line and a second residual film extended from the second touch line toward the first touch line, and the first and second residual films are separated from each other.

5. The touch display device of claim 1 , wherein the plurality of touch lines includes first and second metal layers, and the second metal layer is located above the first metal layer and arranged at a position corresponding to the first metal layer.

6. The touch display device of claim 5 , wherein the compensation pattern located in the insulation layer is disposed between the first metal layer and the second metal layer.

7. The touch display device of claim 1 , wherein the compensation pattern located in the insulation layer is disposed between the two adjacent touch lines.

8. A touch display panel comprising:
an encapsulation layer;
at least one dam extended from the encapsulation layer, disposed in a non-active area of a display panel and preventing the encapsulation layer from collapsing
a plurality of touch lines disposed on the encapsulation layer and intersecting the at least one dam;
a compensation pattern located in a lower boundary portion of the at least one dam between two adjacent touch lines among the plurality of touch lines; and
an insulation layer covering the two adjacent touch lines,
wherein the compensation pattern includes a hole disposed in the insulation layer and separates the two adjacent touch lines from each other.

9. The touch display panel of claim 8 , wherein the plurality of touch lines has a residual film extended to a portion where the touch lines meet the lower boundary portion of the at least one dam.

10. The touch display panel of claim 9 , wherein the two adjacent touch lines include a first touch line and a second touch line adjacent to the first touch line.

11. The touch display panel of claim 10 , wherein the residual film includes a first residual film extended from the first touch line toward the second touch line and a second residual film protruding from the second touch line toward the first touch line, and the first and second residual films are separated from each other.

12. The touch display panel of claim 8 , wherein the plurality of touch lines includes first and second metal layers, and the second metal layer is located above the first metal layer and arranged at a position corresponding to the first metal layer.

13. The touch display panel of claim 12 , wherein the compensation pattern located in the insulation layer is disposed between the first metal layer and the second metal layer.

14. The touch display panel of claim 8 , wherein the compensation pattern located in the insulation layer is disposed between the two adjacent touch lines.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Yangsik
• Lee Jaegyun
• Gwon Hyangmyoung
• Lee Deuksu

Classifications

• G06F3/041 Primary

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

• G06F2203/04103

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

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title