US 12,461,623 B2
Touch panel system and electronic device
Kazutoshi Kida, Kameyama (JP); Yasuhiro Sugita, Kameyama (JP); Takenori Maruyama, Kameyama (JP); Takuma Yamamoto, Kameyama (JP); and Shinji Yamagishi, Kameyama (JP)
Assigned to SHARP DISPLAY TECHNOLOGY CORPORATION, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Mie (JP)
Filed on Sep. 20, 2024, as Appl. No. 18/890,905.
Claims priority of application No. 2023-183583 (JP), filed on Oct. 25, 2023.
Prior Publication US 2025/0138663 A1, May 1, 2025
Int. Cl. G06F 3/044 (2006.01); G02F 1/1333 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0416 (2013.01) [G02F 1/13338 (2013.01); G02F 1/13439 (2013.01); G02F 1/136209 (2013.01); G02F 1/136222 (2021.01); G06F 3/0412 (2013.01); G06F 3/04164 (2019.05); G06F 3/044 (2013.01); G06F 2203/04105 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A touch panel system comprising:
a touch panel; and
a controller,
the touch panel including
an active matrix substrate,
a color filter substrate, and
a liquid crystal layer located between the active matrix substrate and the color filter substrate, wherein
the active matrix substrate includes a drive electrode and a detection electrode, the drive electrode and the detection electrode being disposed on a surface of the active matrix substrate which faces the liquid crystal layer,
the color filter substrate includes a conductor, the conductor being disposed on a surface of the color filter substrate which faces the liquid crystal layer, and
the controller is configured to
supply a drive signal to the drive electrode and obtain a signal value from the detection electrode, and
detect a pressing force applied to the touch panel by an indicator, based on the signal value obtained from the detection electrode.