Patent ID: 9552782
Date: 2017-01-24
CPC Classifications: G09G

Claim:
1. An image display device to display an image with a desired color by dividing a single frame period of a supplied input signal into a plurality of sub-frame periods and sequentially performing a scanning operation on single or multiple color data for each sub-frame period, the image display device comprising: a display panel, including a display area to display the image with the desired color upon receiving the single or multiple color data generated based on the input signal, for each sub-frame period, and including a non-display area on which an image including a color other than the desired color is displayable; an illumination unit to emit single or multiple color light of a backlight generated based on light source luminance data, from a rear surface side of the display panel for each sub-frame period; and an image control circuit to generate the single or multiple color data based on the input signal and to acquire a light source lighting time period, by which a lighting time period of the illumination unit is designatable, and a timing control signal for controlling at least one of a lighting start time of the illumination unit and a start time of the scanning operation, wherein the image control circuit is configured to supply the single or multiple color data to the display panel by performing the scanning operation for each sub-frame period, to control the light source lighting time period of the illumination unit configured to emit the single or multiple color light of the backlight corresponding to the single or multiple color data, for each of periods corresponding to periods, in which only the single or multiple color data necessary for display of the image with the desired color is supplied, in the sub-frame periods, and to control at least one of the lighting start time of the illumination unit and the start time of the scanning operation, wherein the single or multiple color data supplied to the non-display area for each sub-frame period is data which is the same for each pixel, and wherein the image control circuit includes a field sequential processing circuit to generate field sequential image data for displaying an image for each sub-frame period by using the single or multiple color data included in the input signal, a lighting ratio processing circuit to acquire the light source lighting time period, by which a lighting time period of the illumination unit is designated, and the light source luminance data of the light of the backlight, based on display start position designation data for designating a display start position of the display area and non-display start position designation data for designating a display start position of the non-display area, a lighting timing processing circuit to acquire the timing control signal for controlling at least one of the lighting start time of the illumination unit and the start time of the scanning operation, based on the light source lighting time period and the display start position designation data, and a display image generation circuit to generate the single or multiple color data to be supplied to each of the display area and the non-display area, based on the field sequential image data, the display start position designation data, and the non-display start position designation data.