US 11,755,270 B2
Display device with a detection electrode
Takaaki Kono, Tokyo (JP); Yoshio Owaki, Tokyo (JP); and Makoto Hayashi, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Apr. 22, 2022, as Appl. No. 17/727,076.
Application 17/727,076 is a continuation of application No. PCT/JP2020/037271, filed on Sep. 30, 2020.
Claims priority of application No. 2019-193282 (JP), filed on Oct. 24, 2019.
Prior Publication US 2022/0253267 A1, Aug. 11, 2022
Int. Cl. G06F 3/14 (2006.01); G02F 1/1333 (2006.01); G02F 1/1334 (2006.01); G06F 3/0488 (2022.01); H10K 59/40 (2023.01); H10K 59/128 (2023.01)
CPC G06F 3/1423 (2013.01) [G02F 1/1334 (2013.01); G02F 1/13338 (2013.01); G02F 1/133342 (2021.01); G06F 3/0488 (2013.01); H10K 59/128 (2023.02); H10K 59/40 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A display device comprising:
a detection electrode;
a first screen;
a second screen on a side opposite to the first screen; and
a controller,
wherein the controller includes, as thresholds for a detected value from the detection electrode, a first threshold, a second threshold larger than the first threshold, and a third threshold larger than the second threshold,
when the detected value is in a first range between the first threshold and the second threshold, the controller determines that the first screen has been touched,
when the detected value is in a second range between the second threshold and the third threshold, the controller determines that the second screen has been touched,
when the detected value is in a third range equal to or larger than the third threshold, the controller determines that the first screen and the second screen have been touched, and
wherein the controller makes the determination when the detected value is continuously in the first range, the second range, or the third range for a predetermined number of consecutive frames or more,
wherein a distance between the detection electrode and the first screen is longer than a distance between the detection electrode and the second screen, or
a dielectric constant between the detection electrode and the first screen is lower than a dielectric constant between the detection electrode and the second screen, or
the distance between the detection electrode and the first screen is longer than the distance between the detection electrode and the second screen, and the dielectric constant between the detection electrode and the first screen is lower than the dielectric constant between the detection electrode and the second screen.