Display device

Patent metadata

Field	Value
Publication number	US-9436331-B2
Application number	US-201414338967-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Jul 23, 2013
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A display device is disclosed which includes: a first substrate; a second substrate disposed to face the first substrate; a plurality of touch electrodes formed in a fixed area of the first substrate; touch lines connected to the touch electrodes; and a driver disposed in an edge of the first substrate and configured to apply a voltage to the touch lines. The touch lines connected to the touch electrodes have the same resistance value.

First claim

What is claimed is:

1. A display device comprising:
a first substrate;
a second substrate disposed to face the first substrate;
a plurality of touch electrodes arranged in a fixed area of the first substrate;
touch lines connected to the touch electrodes and extending into a display area of the display device; and
a driver disposed in an edge of the first substrate and configured to apply a voltage to the touch lines,
wherein the touch lines each include a first end connected to the driver and a second end connected to a corresponding one of the touch electrodes,
wherein some of the touch lines each include a bend portion such that each of the some of the touch lines extends from the first end, through the bend portion, to the second end and is connected to the corresponding one of the touch electrodes at the second end and that the second end is disposed closer to the driver than the bend portion is to the driver.

2. The display device of claim 1 , wherein the touch lines connected to the touch electrodes are of the same length.

3. The display device of claim 1 , wherein the touch line connected to the furthest touch electrode from the driver has the shortest length.

4. The display device of claim 3 , wherein a part of the touch lines overlaps with the touch electrodes further apart than the respective touch electrode from the driver.

5. The display device of claim 1 , further comprises a plurality of pixel formed on the first substrate, wherein each of the touch electrodes is within the respective pixel.

6. The display device of claim 5 , wherein the touch electrodes comprise a transparent conductive material.

7. The display device of claim 6 , wherein the touch electrodes are made of indium-tin-oxide ITO.

8. The display device of claim 1 , wherein the first end and the bend portion define a first section, and the bend portion and the second end define a second section, the first section is connected to the second section.

9. The display device of claim 8 , wherein the second section is shorter than the first section.

10. A display device comprising:
a first substrate;
a second substrate disposed to face the first substrate;
a plurality of touch electrodes arranged in a fixed area of the first substrate;
touch lines connected to the touch electrodes and extending into a display area of the display device; and
a driver disposed in an edge of the first substrate and configured to apply a voltage to the touch lines,
wherein the touch lines each include a first end connected to the driver and a second end connected to a corresponding one of the touch electrodes, and wherein the touch lines have different thicknesses and lengths such that the resistance of the touch lines from the first end to the second end is same.

11. The display device of claim 10 , wherein the further the touch electrodes go away from the driver, the thicker the touch lines connected to the touch electrodes.

12. The display device of claim 11 , wherein the further the touch electrodes go away from the driver, the longer the touch lines connected to the touch electrodes.

13. The display device of claim 10 , wherein the touch lines connected to the touch electrodes have different widths from one another according to lengths of the touch lines.

14. The display device of claim 13 , wherein the further the touch electrodes go away from the driver, the wider the touch lines connected to the touch electrodes are in width.

15. The display device of claim 14 , wherein the further the touch electrodes go away from the driver, the longer the touch lines connected to the touch electrodes.

Assignees

• Lg Display Co Ltd

Inventors

• Jo Young Woo
• Jun Jae Hun

Classifications

• G06F3/041 Primary

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/04164

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

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title