IMAGE QUALITY OPTIMIZATION METHOD AND IMAGE QUALITY OPTIMIZATION MODULE

An image quality optimization method and an image quality optimization module (70). The image quality optimization method comprises: in a gamma adjustment phase, controlling and setting actual data voltages, corresponding to greyscale 0, of sub-pixels of different colors, and controlling at least two of the actual data voltages, corresponding to the greyscale 0, of the sub-pixels of different colors to be mutually different, so as to control gamma curves of the sub-pixels, such that absolute values of brightness difference values between brightnesses, corresponding to all greyscale values, of the gamma curves and a brightness, corresponding to a greyscale value, of a standard gamma curve are all less than a predetermined brightness difference value, wherein the predetermined brightness difference value is greater than 0; and in a display phase, when the greyscale values provided to the sub-pixels of different colors are 0, providing the corresponding actual data voltages to the sub-pixels of different colors.