Patent ID: 8913094

Claim:
A method of displaying an image of a pixel, the pixel comprising a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel, the pixel receiving a plurality of N-bit signal values to display the image, a largest value of each of the signal values being (2 N −1), the method comprising: providing a first signal, a second signal and a third signal; transforming the first signal, the second signal and the third signal into a first output signal, a second output signal, a third output signal and a fourth output signal, wherein when a color saturation value is substantially not larger than a first predetermined value, the fourth output signal is substantially not smaller than the first output signal, the second output signal and the third output signal; and using the first output signal, the second output signal, the third output signal and the fourth output signal to display images corresponding to the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel respectively so as to form the image of the pixel; wherein N is a positive integer.