Method and device for hybrid touch sensing

A device for hybrid touch sensing, for detecting a normal touch and a force touch concurrently, the device comprising:

• a first capacitor, wherein capacitance of the first capacitor changes in response to a first touch, the first touch is one of the normal touch and the force touch;
• a second capacitor, wherein capacitance of the second capacitor changes in response to a second touch, the second touch is the other one of the normal touch and the force touch;
• a first driving source, providing a first driving signal to the first capacitor, wherein the first driving signal is a periodic signal with a first frequency;
• a second driving source, providing a second driving signal to the second capacitor, wherein the second driving signal is a periodic signal with a second frequency different from the first frequency;
• a front-end circuit, configured to generate a composite sensing signal in response to the first driving signal and the second driving signal;
• and
• a processing circuit, configured to extract information from the composite sensing signal to calculate a first change in capacitance of the first capacitor and a second change in capacitance of the second capacitor to detect the normal touch and the force touch concurrently.