Self-capacitance input device with hovering touch

A self-capacitance input device with hovering touch, comprising:

• a sensing electrode layer having a plurality of sensing electrodes on one side for sensing a touch or approach of an external object;
• a reflection and deflection electrode layer disposed on the other side of the sensing electrode layer and having at least one reflection and deflection electrode;
• an insulation layer disposed between the sensing electrode layer and the reflection and deflection electrode layer;
• at least one amplifier with a gain greater than zero having an output coupled to the reflection and deflection electrode layer;
• a sensing control circuit having a touch sensing signal source;
• and
• a plurality of selection switch circuits corresponding to the plurality of sensing electrodes, respectively, for sequentially sending a touch sensing signal generated by the touch sensing signal source to the corresponding sensing electrodes thereby performing a touch sensing or hovering detection,
• wherein the at least one reflection and deflection electrode has an area greater than or equal to an area covered by the plurality of sensing electrodes,
• wherein, with the plurality of selection switch circuits, the touch sensing signal is applied to the at least one amplifier for being amplified and subsequently sent to the sensing electrodes neighboring a sensing electrode under detection.