US 12,477,924 B2
Touch sensor
Jun Kadowaki, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Feb. 5, 2024, as Appl. No. 18/433,098.
Application 18/433,098 is a continuation of application No. 17/892,802, filed on Aug. 22, 2022, granted, now 11,921,951.
Application 17/892,802 is a continuation of application No. PCT/JP2021/005794, filed on Feb. 17, 2021.
Claims priority of provisional application 62/988,708, filed on Mar. 12, 2020.
Prior Publication US 2024/0176451 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 59/40 (2023.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); H10K 59/131 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/40 (2023.02) [G06F 3/0412 (2013.01); G06F 3/04182 (2019.05); G06F 3/0443 (2019.05); H10K 59/80521 (2023.02); H10K 59/131 (2023.02); H10K 59/35 (2023.02); H10K 59/80522 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A touch sensor, comprising:
a display panel that includes a plurality of pixel electrodes each provided in a corresponding one of a plurality of pixels, and a common electrode shared by the plurality of pixels; and
a touch panel that detects a position of at least either a finger or a pen,
wherein the display panel and the touch panel are superimposed on each other in a vertical direction perpendicular to the display panel, and
the common electrode includes a conductor-area-reduction portion that reduces an area of the common electrode, wherein,
the conductor-area-reduction portion includes a plurality of holes formed in the common electrode;
the plurality of holes collectively function as the conductor-area-reduction portion;
the plurality of holes consist of H-shaped holes each formed of two elongated sections extending in a first direction and one elongated section extending between the two elongated sections in a second direction perpendicular to the first-horizontal direction, the first and second directions being in parallel with the display panel;
the H-shaped holes are staggered such that the one elongated section extending in the second direction of first and third H-shaped holes of the H-shaped holes in the second direction is aligned with ends of the two elongated sections extending in the first direction of second and fourth H-shaped holes of the H-shaped holes in the second direction.