Patent ID: 8878981

Claim:
A micro-electromechanical (MEMS) actuator mounted camera module having sag compensation, the camera module comprising: a MEMS actuator mounted with a lens and configured to output a displacement moving force for a displacement drive of the lens based on an electrostatic force for adjustment of a focal distance between the lens and an image sensor; a MEMS actuator moving unit configured to output electrostatic capacity information corresponding to a position of the lens changed by a displacement move and configured to output a displacement move signal to the MEMS actuator to control the displacement moving force; a memory unit that stores reference signal information corresponding to a maximum displacement move in the displacement move; and a signal compensation unit configured to calculate a step range corresponding to the displacement move of the MEMS actuator based on the electrostatic capacity information outputted from the MEMS actuator moving unit and the reference signal information stored in the memory unit and configured to compensate the displacement moving force of the MEMS actuator based on the calculated step range, wherein the electrostatic capacity information outputted from the MEMS actuator moving unit includes minimum electrostatic capacity information and maximum electrostatic capacity information based on a sag in a shooting direction of the image sensor.