Patent ID: 11934610
Assignee: FOCALTECH ELECTRONICS (SHENZHEN) CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A touch control method applied to a 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, wherein the scanning signal is a single-frequency non-sine wave scanning signal;
step S2: acquiring second original sensing data according to the single-frequency non-sine wave scanning signal, the single-frequency non-sine wave scanning signal can be decomposed into a fundamental wave and one harmonic wave, separating the second original sensing data into first touch data corresponding to the fundamental wave and second touch data corresponding to the one harmonic wave 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 single-frequency non-sine wave scanning signal in a finger is smaller than that in water droplets, and calculating a current touch position according to the first touch data and the second touch data if the initial coupling capacitance change is caused by the finger if the touch device is in the first touch mode.