Patent ID: 8558781

Claim:
A color sequential control method adapted to a field sequential color display (FSCD), comprising a display panel and a backlight module, wherein the backlight module provides a backlight source to the display panel and the backlight source comprises a red backlight, a blue backlight and a green backlight, the color sequential control method comprising: sequentially dividing a frame period of the display panel into a first sub-frame period, a second sub-frame period and a third sub-frame period; providing a cyan backlight during a first sub backlight period of a first backlight period of the first sub-frame period and then providing the red backlight during a second sub backlight period of the first backlight period of the first sub-frame period so as to display a red image data by the cyan backlight and the red backlight; sequentially providing a magenta backlight and then the green backlight during a second backlight period of the second sub-frame period so as to display a green image data by the cyan backlight and the green backlight; sequentially providing a yellow backlight and then the blue backlight during a third backlight period of the third sub-frame period so as to display a blue image data by the yellow backlight and the blue backlight; writing the red image data into the display panel during the first sub-frame period; writing the green image data into the display panel during the second sub-frame period; writing the blue image data into the display panel during the third sub-frame period; calculating a minimum color gamut space according to a maximum chroma of the red image data, a maximum chroma of the green image data and a maximum chroma of the blue image data; determining a ratio of the first sub backlight period of the first backlight period to the second sub backlight period of the first backlight period according to the minimum color gamut space; determining if the minimum color gamut space is less than or equal to 50% of an original color gamut space of the backlight source; and when the minimum color gamut space is less than or equal to 50% of the original color gamut space, the second sub backlight period of the first backlight period is 100% in the first backlight period.