US 12,282,621 B2
Touch panel system and display device
Takenori Maruyama, Kameyama (JP); Shinji Yamagishi, Kameyama (JP); Takuma Yamamoto, Kameyama (JP); Kazutoshi Kida, Kameyama (JP); Yasuhiro Sugita, Kameyama (JP); and Hiroshi Fukushima, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Jan. 17, 2024, as Appl. No. 18/414,625.
Claims priority of application No. 2023-021712 (JP), filed on Feb. 15, 2023.
Prior Publication US 2024/0272737 A1, Aug. 15, 2024
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0416 (2013.01) [G06F 3/0446 (2019.05); G06F 2203/04105 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A touch panel system comprising:
a touch panel including a drive electrode, a position detection electrode, and a pressure detection electrode; and
a controller configured to impart a drive signal to the drive electrode, and acquire a signal value from each of the position detection electrode and the pressure detection electrode, wherein
the controller is further configured to:
detect, based on the signal value obtained from the position detection electrode, a touch range by a pointer,
determine a pressure detection range, corresponding to the touch range, of the signal value obtained from the pressure detection electrode, and
calculate, based on at least one signal value in the pressure detection range, a magnitude of a pressure applied by the pointer,
wherein calculating the magnitude of the pressure comprises amplifying at least one provisional value, based on the at least one signal value in the pressure detection range, by an equation that does not use any signal value from the position detection electrode.