US 11,934,610 B2
Touch control method, circuit system and touch device
Wei-Jing Hou, Guangdong (CN); Jian-Wu Chen, Guangdong (CN); Hui-Dan Xiao, Guangdong (CN); Da-Chun Wu, Guangdong (CN); Zhen-Huan Mou, Guangdong (CN); You-Gang Gong, Guangdong (CN); and Guan-Qun Pan, Guangdong (CN)
Assigned to FocalTech Electronics (Shenzhen) Co., Ltd., Shenzhen (CN)
Appl. No. 17/434,092
Filed by FocalTech Electronics (Shenzhen) Co., Ltd., Shenzhen (CN)
PCT Filed Feb. 26, 2020, PCT No. PCT/CN2020/076834
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2020/173469, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201910142897.4 (CN), filed on Feb. 26, 2019.
Prior Publication US 2022/0137775 A1, May 5, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/04186 (2019.05); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05)] 19 Claims
OG exemplary drawing
 
1. A touch control method applied to a touch device, the touch device comprising a plurality of touch electrodes and being pre-stored with a first touch mode and a second touch mode different from the first touch mode, the touch control method comprising:
step S1, sending a scanning signal to the plurality of touch electrodes if the touch device is in the first touch mode, the scanning signal is a multi-frequency scanning signal;
step S2, acquiring touch data according to the multi-frequency scanning signal if the touch device is in the first touch mode; and
step S3, judging whether it is a finger or water droplets that caused an initial coupling capacitance change by using a characteristic that a conductivity difference of the multi-frequency scanning signal in a finger is smaller than that in water droplets, and calculating a current touch position according to the touch data if the initial coupling capacitance change is caused by the finger if the touch device is in the first touch mode.