Patent ID: 6911963

Claim:
A field-sequential color display method comprising: time-sequentially displaying of luminous information of an input image information with every display color; and changing the display color in synchronism with the displaying of the luminous information in order to display the input image information, wherein one frame period in which one color image is displayed comprises at least four sub-field periods in which information of each color is displayed, and a picture signal displayed in at least one sub-field period is a non-three-primary color picture signal which is generated from at least two primary color signals of input picture signals including three-primary color signals, wherein the picture signal displayed in each of the sub-field periods is one of modified picture signals which are obtained by separating the input picture signal into n non-three-primary color picture signals and three modified three-primary color picture signals, where n is an integer of 1 or more, and wherein the separation of the picture signals is carried out by detecting the minimum value of the three-primary color picture signals, causing the minimum value to be set as the signal value of a first non-three-primary color picture signal of the non-three-primary color picture signals, and causing a smaller signal value of two modified picture signals, which are obtained by subtracting the minimum value from the three-primary color picture signal values and which are not zero, to be set as a second non-three-primary color picture signal of the non-three-primary color picture signals.