US 11,861,106 B2
Detection device and detection method
Yuki Ito, Kanagawa (JP); and Yukihiro Ito, Kanagawa (JP)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Oct. 21, 2022, as Appl. No. 17/970,998.
Claims priority of application No. 2021-178055 (JP), filed on Oct. 29, 2021.
Prior Publication US 2023/0136362 A1, May 4, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/01 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/017 (2013.01); G06F 3/0443 (2019.05); G06F 2203/04108 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A detection device, comprising:
a sensor including a driving electrode and detection electrodes; and
a controller detecting a non-contact target from signal waveforms acquired from the detection electrodes by applying a voltage to the driving electrode, the signal waveforms each indicating a change in signal strength over time,
wherein the controller discriminates a peak caused by the non-contact target on the basis of a time width from a rising start point of a peak to a peak top of the peak, a height from the rising start point of the peak to the peak top of the peak, and a slope of a rising side of the peak, in the signal waveform.