Multi-phase touch-sensing electronic device

A touch-sensing electronic device, comprising:

• a housing having a first touch-sensing surface, a second touch-sensing surface and a third touch-sensing surface;
• a substrate extensively disposed under the first touch-sensing surface, the second touch-sensing surface and the third surface;
• a plurality of sensing electrodes formed on the same substrate, and having capacitance changes in response to touch operations or gestures respectively performed on or over the first touch-sensing surface, the second touch-sensing surface and the third touch-sensing surface, wherein the sensing electrodes are grouped into three sensing electrode arrays corresponding to the first, second and third touch-sensing surfaces, respectively;
• three driving electrodes for respectively driving sensing control operations of the three sensing electrode arrays to sense the capacitance changes in response to respective driving voltage signals;
• and
• a controller accommodated in the housing for issuing the respective driving voltage signals to the three driving electrodes and generating respective control signals corresponding to the sensed capacitance changes,
• wherein the three driving electrodes are electrically connected in series to the controller via a same conductive wire, and the respective driving voltage signals for respectively driving the sensing control operations of the three sensing electrode arrays are sequentially transmitted from the controller to the three driving electrodes via the same conductive wire, and
• wherein at least two of the three sensing electrode arrays have different configurations for performing different sensing operations,
• a planar display module on the first touch-sensing surface, and a ground electrode, which is disposed between the planar display module and the sensing electrode array corresponding to the first touch-sensing surface,
• wherein the ground electrode receives a constant voltage signal as one of the driving voltage signals from the controller, and is movable toward the corresponding sensing electrode array in response to a pressing operation so as to change a distance therefrom to the corresponding sensing electrode array for press sensing,
• wherein the sensing electrode array corresponding to the second touch-sensing surface receives a charging/discharging voltage signal as one of the driving voltage signals from the controller in response to a touch operation on the second touch-sensing surface for fingerprint sensing.