US 11,941,219 B2
Touch sensor having improved sensing sensitivity and display device including the same
Won Jun Choi, Yongin-si (KR); Il Joo Kim, Yongin-si (KR); and Deok Jung Kim, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Nov. 12, 2021, as Appl. No. 17/525,289.
Application 17/525,289 is a continuation of application No. 16/805,981, filed on Mar. 2, 2020, granted, now 11,199,937.
Claims priority of application No. 10-2019-0060745 (KR), filed on May 23, 2019.
Prior Publication US 2022/0075486 A1, Mar. 10, 2022
Int. Cl. G06F 3/045 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0448 (2019.05) [G06F 3/0443 (2019.05)] 19 Claims
OG exemplary drawing
 
1. A touch sensor comprising:
a base layer including a sensing area;
sensor electrodes disposed in the sensing area and including sensor patterns, the sensor patterns including first sensor patterns electrically connected along a first direction through first bridge patterns connecting the first sensor patterns, and second sensor patterns electrically connected along a second direction through second bridge patterns connecting the second sensor patterns, wherein the first sensor patterns and the second sensor patterns include non-corner unit patterns each having a first size and a corner unit pattern disposed at a corner of the sensing area and having a second size different from the non-corner unit patterns; and
dummy electrodes disposed between the first sensor patterns and the second sensor patterns,
wherein a center of the first bridge pattern included in the corner unit pattern of the first sensor patterns is not disposed on a straight line connecting centers of the first bridge patterns in the non-corner unit patterns of the first sensor patterns,
wherein centers of the second bridge patterns in the corner unit pattern and in the non-corner unit patterns of the second sensor patterns are disposed on a straight line extending along the second direction,
wherein a dummy electrode in the corner unit pattern is connected to a dummy electrode in a non-corner unit pattern disposed adjacent to the corner unit pattern,
wherein a first sensor pattern disposed at a boundary between the corner unit pattern and the non-corner unit pattern includes a first sub-sensor pattern disposed in the corner unit pattern and a second sub-sensor pattern disposed in the non-corner unit pattern, and
wherein the first sub-sensor pattern has a first length along the boundary between the corner unit pattern and the non-corner unit pattern shorter than a second length of the second sub-sensor pattern along the boundary between the corner unit pattern and the non-corner unit pattern.