Driving of a color sequential display

A color sequential display system comprising:

• a display (201) for displaying at least one image, the display having a backlight (205) comprising a plurality of backlight segments each associated with a region of the image and a light modulating panel (207) comprising pixels having controllable light transmission for modulating light from the backlight (205);
• a backlight unit (211) for determining, for each of the plurality of backlight segments, backlight chromaticities for fields of the image based on a gamut of the image region associated with the respective backlight segment;
• an order unit (217) for determining a sequential order of the backlight chromaticities for each of the plurality of backlight segments for the at least one image such that the differences in backlight chromaticities for adjacent backlight segments within a field are reduced.
• a first driver (219) for generating a backlight drive signal for the backlight (205) corresponding to the backlight chromaticities and the sequential order;
• a modulating processor (213) for determining light modulating values for the pixels in response to the chromaticities, the sequential order and the at least one image;
• and a second driver (221) for generating a light modulating drive signal for the light modulating panel (207) corresponding to the light modulating values.

A method of driving a color sequential display (201) having a backlight (205) comprising plurality of backlight segments and a light modulating panel (207) comprising pixels having controllable light transmission for modulating light from the backlight (205);

• the method comprising:
• determining, for each of a plurality of backlight segments, backlight chromaticities for fields of at least one image to be displayed by the color sequential display (201) based on the gamut in an associated region of the at least one image;
• determining a sequential order of the backlight chromaticities for each of the plurality of backlight segments for the at least one image in response to the chromaticities;
• generating a backlight drive signal for the backlight (205) corresponding to the backlight chromaticities;
• determining light modulating values for the pixels in response to the chromaticities, the sequential order and the at least one image;
• and
• generating a light modulating drive signal for the light modulating panel (207) corresponding to the light modulating values.