IP Library Granted Patent US 12,061,756
Granted Patent B2
US 12,061,756 · App. 17/425,366 · Granted Aug 13, 2024

Touch sensing unit and display device comprising same

Inventors: Sun Hwa Lee (Yongin-si, KR); Dong Hoon Lee (Hwaseong-si, KR); Mu Kyung Jeon (Ulsan, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
G06F3/0412G06F3/0416G06F3/04164G06F3/0446G06F3/0448G06F3/047H10K59/131H10K59/40G06F2203/04111
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Quick Facts
Patent No.
US 12,061,756
App. No.
17/425,366
Filed
Jul 23, 2021
Granted
Aug 13, 2024
Kind
B2
Art Unit
2627
USPC
345/173
Abstract

A touch sensing unit includes first touch electrodes and second touch electrodes disposed on in a touch sensor area which includes a round portion having a curvature. A driving line is connected to a first touch electrode among the first touch electrodes are disposed in the round portion of the touch sensor area. A sensing line is connected to a second touch electrode among the second touch electrodes disposed in the round portion of the touch sensor area. The driving line and the sensing line intersect each other.

Claims (68)

1. A touch sensing unit comprising:

first touch electrodes and second touch electrodes disposed in a touch sensor area which includes a round portion having a curvature, the first touch electrodes extend in a first direction and the second touch electrodes extend in a second direction crossing the first direction, wherein a plurality of the first touch electrodes and a plurality of the second touch electrodes are disposed in the round portion;

a driving line connected to a first touch electrode among the plurality of the first touch electrodes disposed in the round portion of the touch sensor area; and

a sensing line connected to a second touch electrode among the plurality of the second touch electrodes disposed in the round portion of the touch sensor area,

wherein the driving line and the sensing line intersect each other at an intersection area,

wherein each of the driving line and the sensing line includes a first touch signal layer and a second touch signal layer, and

wherein at the intersection area, the driving line includes the first touch signal layer among the first touch signal layer and the second touch signal layer, and the sensing line includes the second touch signal layer among the first touch signal layer and the second touch signal layer at the intersection area.

2. The touch sensing unit of claim 1 , wherein a planar shape of the first touch electrode connected to the driving line in the round portion is different from a planar shape of first touch electrodes that are disposed in areas excluding the round portion.

3. The touch sensing unit of claim 2 , wherein a planar shape of the second touch electrode connected to the sensing line in the round portion is different from a planar shape of second touch electrodes that are disposed in areas excluding the round portion.

4. The touch sensing unit of claim 1 , wherein:

the first touch signal layer of the driving line intersects the second touch signal layer of the sensing line.

5. The touch sensing unit of claim 4 , wherein the second touch signal layer is disposed on the first touch signal layer.

6. The touch sensing unit of claim 5 , wherein the first touch electrodes and the second touch electrodes are disposed on a same layer with the second touch signal layer.

7. The touch sensing unit of claim 6 , further comprising:

a connection electrode that connects the first touch electrodes and intersects the second touch electrodes,

wherein the connection electrode is disposed on a same layer with the first touch signal layer.

8. A touch sensing unit comprising:

first touch electrodes and second touch electrodes disposed in a touch sensor area, the first touch electrodes extend in a first direction and the second touch electrodes extend in a second direction crossing the first direction;

driving lines connected to the first touch electrodes;

sensing lines of a first group electrically connected to a first portion of the second touch electrodes; and

sensing lines of a second group electrically connected to a remaining portion of the second touch electrodes not including the first portion,

wherein at least one of the sensing lines of the first group intersects at least one of the driving lines at an intersection area,

wherein each of the driving lines and the sensing lines of the first group and the second group includes a first touch signal layer and a second touch signal layer, and

wherein at the intersection area, the at least one driving line includes the first touch signal layer among the first signal layer and the second touch signal layer, and the at least one sensing lines of the first group includes the second touch signal layer among the first signal layer and the second touch signal layer.

9. The touch sensing unit of claim 8 , wherein:

the touch sensor area includes a round portion having a curvature, wherein a plurality of the first touch electrodes and a plurality of the second touch electrodes are disposed in the round portion;

at least one of the sensing lines of the first group is connected to a second touch electrode of the plurality of second touch electrodes that is disposed in the round portion; and

at least one of the driving lines is connected to a first touch electrode of the plurality of first touch electrodes that is disposed in the round portion.

10. The touch sensing unit of claim 8 , wherein:

the sensing lines of the first group are disposed at a first side of the touch sensor area; and

the sensing lines of the second group are disposed at a second side of the touch sensor area.

11. The touch sensing unit of claim 8 , wherein a number of the sensing lines of the first group is less than a number of the sensing lines of the second group.

12. The touch sensing unit of claim 8 , further comprising:

first touch pads connected to the sensing lines of the first group; and

second touch pads connected to the sensing lines of the second group.

13. The touch sensing unit of claim 12 , wherein:

the first touch pads are disposed at a first side of a pad area; and

the second touch pads are disposed at a second side of the pad area.

14. The touch sensing unit of claim 8 , further comprising a guard line surrounding a sensing line disposed at an outermost side among the sensing lines of the first group and a sensing line disposed at an outermost side among the sensing lines of the second group.

15. A touch sensing unit comprising:

first touch electrodes and second touch electrodes disposed in a touch sensor area that includes a plurality of round portions, wherein a plurality of the first touch electrodes and a plurality of the second touch electrodes are disposed in the round portion;

driving lines of a first group electrically connected to a first portion of the first touch electrodes;

driving lines of a second group electrically connected to a remaining portion of the first touch electrodes not including the first portion of the first touch electrodes and not electrically connected to the first portion of the first touch electrodes;

sensing lines of a first group electrically connected to a first portion of the second touch electrodes; and

sensing lines of a second group electrically connected to a remaining portion of the second touch electrodes not including the first portion of the second touch electrodes and not electrically connected to the first portion of the second touch electrodes,

wherein some of the sensing lines of the first group are connected to the second touch electrodes disposed in a first round portion of the plurality of round portions, and

the driving lines of the first group are connected to the first touch electrodes disposed in a second round portion of the plurality of round portions,

wherein each of the driving lines of the first and second groups and the sensing lines of the first and second groups includes a first touch signal layer and a second touch signal layer, and

wherein the first touch electrodes and the second touch electrodes are disposed on a same layer with the second touch signal layer, and

wherein:

the sensing lines of the first group and the s of the first group are disposed at a first side of the touch sensor area,

the sensing lines of the second group are disposed at a second side of the touch sensor area,

the driving lines of the second group are disposed at a third side of the touch sensor area, and

a length of each of the driving lines of the first group is longer than a length of the sensing lines of the first group.

16. The touch sensing unit of claim 15 , wherein the sensing lines of the first group are disposed between the driving lines of the first group and the driving lines of the second group.

17. The touch sensing unit of claim 15 , further comprising a guard line disposed between the sensing lines of the first group and the driving lines of the first group.

18. The touch sensing unit of claim 15 , wherein a number of the sensing lines of the first group is less than a number of the sensing lines of the second group.

19. The touch sensing unit of claim 15 , wherein a number of the driving lines of the first group is less than a number of the driving lines of the second group.

20. A display device comprising:

a display unit including a display area which includes pixels; and

a touch sensor area overlapping the display area which includes a touch sensing unit,

wherein the touch sensing unit includes:

first touch electrodes and second touch electrodes disposed in a round portion of the touch sensor area having a curvature, the first touch electrodes extend in a first direction and the second touch electrodes extend in a second direction crossing the first direction, wherein a plurality of the first touch electrodes and a plurality of the second touch electrodes are disposed in the round portion;

driving lines connected to a first portion of the plurality of first touch electrodes disposed in the round portion of the touch sensor area among the first touch electrodes; and

sensing lines connected to a first portion of the plurality of second touch electrodes disposed in the round portion of the touch sensor area among the second touch electrodes; and

at least one driving line of the driving lines and at least one sensing line of the sensing lines intersect each other at an intersection arca,

wherein each of the driving lines and the sensing lines includes a first touch signal layer and a second touch signal layer, and

wherein at the intersection area, the at least one driving line includes the first touch signal layer among the first signal layer and the second touch signal layer, and the at least one sensing lines of the first group includes the second touch signal layer among the first signal layer and the second touch signal layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2021
From: LEE, SUN HWA; LEE, DONG HOON; JEON, MU KYUNG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056955/0427 →
Priority Claims (1)
KR 10-2019-0009501 · Jan 24, 2019 · national
Continuity (1)
Related Publication 20220100303A1 · Mar 31, 2022