Handheld Electronic Apparatus

1. A handheld electronic apparatus comprising: an upper base module, comprising: a proximity/light sensor detecting a distance between the proximity/light sensor and an external object according to a light, wherein an opening is formed above the proximity/light sensor; and a touch controller coupled to the proximity/light sensor for controlling a touch control action on a touch sensor of the handheld electronic apparatus, wherein the touch controller comprises a memory coupled to the proximity/light sensor for storing a calibration parameter of the proximity/light sensor, and a calibration of the proximity/light sensor is conducted together with a calibration of the touch controller; and a lower base module, wherein the upper base module and the lower base module are overlapped.

2. The handheld electronic apparatus according to claim 1 , wherein the memory is a non-volatile memory.

3. The handheld electronic apparatus according to claim 1 , wherein the lower base module comprises a printed circuit board coupled to the proximity/light sensor and the touch controller.

4. The handheld electronic apparatus according to claim 1 , further comprising a flexible printed circuit board disposed between the touch controller and the touch sensor, and the flexible printed circuit board acting as a signal transmission medium between the touch controller and the touch sensor, wherein the proximity/light sensor is disposed on the flexible printed circuit board and the proximity/light sensor is coupled to the touch controller through the flexible printed circuit board.

5. The handheld electronic apparatus according to claim 4 , wherein the printed circuit board is coupled to the touch controller and the proximity/light sensor through the flexible printed circuit board.