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

Claim 14:
15. A touch device comprising a touch control circuit system and 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 circuit system comprising:
a scanning signal sending module, electrically connected to the plurality of touch electrodes and configured to send a scanning signal to all or a part of the plurality of touch electrodes when the touch device in the first touch mode, wherein the scanning signal is a multi-frequency scanning signal or a single-frequency and non-sine wave scanning signal;
a touch data acquisition module, electrically connected to the plurality of touch electrodes and configured to acquire touch data according to the multi-frequency scanning signal or the single-frequency and non-sine wave scanning signal when the touch device in the first touch mode; and
a calculation module, electrically connected to the touch data acquisition module and configured to judge 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 or a single-frequency non-sine wave scanning signal in a finger is smaller than that in water droplets, and calculate 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 when the touch device in the first touch mode.