US 11,921,951 B2
Touch sensor
Jun Kadowaki, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Aug. 22, 2022, as Appl. No. 17/892,802.
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 2022/0391068 A1, Dec. 8, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); H10K 50/822 (2023.01); H10K 59/131 (2023.01); H10K 59/35 (2023.01); H10K 59/40 (2023.01)
CPC G06F 3/04182 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0443 (2019.05); H10K 50/822 (2023.02); H10K 59/131 (2023.02); H10K 59/35 (2023.02); H10K 59/40 (2023.02)] 9 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 consists of all of 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 are arranged at a hole pitch HP in a first direction, the plurality of pixels are arranged at a pixel pitch PP in the first direction, the hole pitch HP is not a multiple of the pixel pitch PP, and the hole pitch HP is not a divisor of the pixel pitch PP.