Touch sensing unit and display device including the same

Patent metadata

Field	Value
Publication number	US-12271561-B2
Application number	US-202318498006-A
Country	US
Kind code	B2
Filing date	Oct 30, 2023
Priority date	Sep 19, 2018
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A touch sensing unit includes a first touch electrode disposed in a touch sensor area. A second touch electrode is disposed in the touch sensor area. A first touch line is disposed in a touch peripheral area. The first touch line is electrically connected to the first touch electrode. The touch peripheral area is disposed on a periphery of the touch sensor area. A second touch line is disposed in the touch peripheral area. The second touch line is electrically connected to the second touch electrode. The touch peripheral area includes first and second regions. In the first region, a width of the first touch line is smaller than a width of the second touch line. In the second region, the width of the first touch line is equal to the width of the second touch line.

First claim

What is claimed is:

1. A touch sensing unit, comprising:
a touch sensor area comprising a first row of touch electrodes extending in a first direction, a second row of touch electrodes extending in the first direction, and a first column of touch electrodes extending in a second direction perpendicular to the first direction;
a first touch line connected to a first end of the first row of touch electrodes; and
a second touch line connected to a first end of the second row of touch electrodes,
wherein a width of a first portion of the second touch line is larger than a width of a first portion of the first touch line,
wherein the first touch line includes a first resistance compensating pattern, and the second touch line includes a second resistance compensating pattern,
wherein the first resistance compensating pattern is proximate to at least one side of the second resistance compensating pattern,
wherein the first portion of the first touch line and the first portion of the second touch line are located at a first side of the touch sensor area, and
wherein the first resistance compensating pattern and the second resistance compensating pattern are located at a second side of the touch sensor area.

2. The touch sensing unit of claim 1 , wherein a width of a second portion of the second touch line is substantially same as a width of a second portion of the first touch line.

3. The touch sensing unit of claim 2 , wherein the first portion of the first touch line is closer to the first resistance compensating pattern than the second portion of the first touch line, and
wherein the first portion of the second touch line is closer to the second resistance compensating pattern than the second portion of the second touch line.

4. The touch sensing unit of claim 1 , further comprising:
a third touch line connected to a first end of the first column of touch electrodes, and
wherein a length of the third touch line is larger than a length of the first touch line.

5. The touch sensing unit of claim 4 , further comprising:
a guard line between the first touch line and the third touch line.

6. The touch sensing unit of claim 4 , further comprising:
a touch driving circuit configured to supply a driving signal to the third touch line, configured to sense capacitance of the first row of touch electrodes through the first touch line, and configured to sense capacitance of the second row of touch electrodes through the second touch line.

7. The touch sensing unit of claim 4 , wherein the third touch line does not include any resistance compensating pattern.

8. The touch sensing unit of claim 1 , wherein a length of the second touch line is larger than a length of the first touch line, and
a length of the first resistance compensating pattern is larger than a length of the second resistance compensating pattern.

9. The touch sensing unit of claim 1 , wherein a number of at least one metal layer of the first resistance compensating pattern is less than a number of the at least one metal layer of the first touch line.

10. The touch sensing unit of claim 1 , wherein each of the first touch line and the second touch line has a first layer and a second layer disposed on the first layer, and
wherein each of the first resistance compensating pattern and the second resistance compensating pattern has one layer among the first layer and the second layer.

11. A touch sensing unit, comprising:
a touch sensor area comprising a first row of touch electrodes extending in a first direction, a second row of touch electrodes extending in the first direction, a third row of touch electrodes extending in the first direction, and a first column of touch electrodes extending in a second direction perpendicular to the first direction;
a first touch line connected to a first end of the first row of touch electrodes;
a second touch line connected to a first end of the first column of touch electrodes;
a third touch line connected to a first end of the second row of touch electrodes;
a fourth touch line connected to a first end of the third row of touch electrodes; and
a guard line between the first touch line and the second touch line, and
wherein the first touch line includes a first resistance compensating pattern, and the third touch line includes a second resistance compensating pattern,
wherein the second touch line does not include any resistance compensating pattern,
wherein a width of a first portion of the third touch line is larger than a width of a first portion of the first touch line,
wherein the first portion of the first touch line and the first portion of the third touch line are located at a first side of the touch sensor area, and
wherein the first resistance compensating pattern and the second resistance compensating pattern are located at a second side of the touch sensor area.

12. The touch sensing unit of claim 11 , wherein the fourth touch line does not include any resistance compensating pattern.

13. The touch sensing unit of claim 12 , wherein a length of the fourth touch line is larger than a length of the second touch line.

14. The touch sensing unit of claim 12 , wherein a length of the fourth touch line is larger than a length of the first touch line and a length of the second touch line.

15. The touch sensing unit of claim 11 , wherein a length of the third touch line is larger than a length of the first touch line, and
a length of the first resistance compensating pattern is larger than a length of the second resistance compensating pattern.

16. The touch sensing unit of claim 11 , wherein a width of a first portion of the fourth touch line is larger than a width of the first portion of the third touch line.

17. The touch sensing unit of claim 16 , wherein a width of a second portion of the third touch line is larger than the width of the first portion of the third touch line, and
wherein a width of a second portion of the fourth touch line is larger than the width of the first portion of the fourth touch line.

18. The touch sensing unit of claim 17 , wherein the width of the second portion of the third touch line is substantially the same as the width of the second portion of the fourth touch line.

19. The touch sensing unit of claim 11 , further comprising:
a touch driving circuit configured to supply a driving signal to the second touch line, configured to sense capacitance of the first row of touch electrodes through the first touch line, configured to sense capacitance of the second row of touch electrodes through the third touch line, and configured to sense capacitance of the third row of touch electrodes through the fourth touch line.

20. The touch sensing unit of claim 11 , wherein each of the first touch line, the third touch line and the fourth touch line has a first layer and a second layer disposed on the first layer, and
wherein each of the first resistance compensating pattern and the second resistance compensating pattern has one layer among the first layer and the second layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Jeong Hwan Hee
• Kim Ki Cheol
• Park Jong Seon

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

• G06F3/0446 Primary

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

• G06F2203/04103

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title