Display device and method that divides one frame period into a plurality of subframe periods and that displays screens of different colors in accordance with the subframe periods

摘要

A display device that adopts a field sequential method and that is capable of achieving desired luminance while suppressing mixing of colors is provided. With respect to display of each color by a liquid crystal display device adopting a field sequential method, a period is provided for which light sources of each color remain turned on until a turning-off delay time has elapsed since an end timing of a subframe period. The turning-off delay time relating to LEDs for which an off state begins in a preceding subframe period is configured in such a way as to be shorter than a turning-on delay time relating to LEDs for which an on state begins in a succeeding subframe period. As a result, an all-off period, in which LEDs of all colors are in the off state, is provided between on periods of two colors.

主权项

1. A display device that divides one frame period into a plurality of subframe periods and that displays screens of different colors in accordance with the subframe periods, the display device comprising:
a display unit, including a plurality of pixel forming units arranged in a matrix; a light source unit, to radiate light onto the display unit, the light source unit including light sources of a plurality of colors capable of controlling an on/off state for each color; and a light source control unit to control states of the light sources of the plurality of colors by being configured to
delay a timing at which the on state of the light sources of each color begins from a start timing of a subframe period in which a screen is to be displayed by controlling transmittance of light relating to each color by a first delay time, anddelay a timing at which the off state of the light sources of each color begins from an end timing of the subframe period in which the screen is to be displayed by controlling the transmittance of the light relating to each color by a second delay time, wherein the second delay time for delaying the timing at which the off state of the light sources of each color begins is configured to be relatively shorter than the first delay time for delaying the timing at which the on state of the light sources of a succeeding color, to be turned on after the light sources of the foregoing color are turned off, begins, and a length of an on period of the light sources determined by the first delay time and the second delay time is configured to be variable, wherein the light source control unit, to control states of the light sources of the plurality of colors, includes configuration information, including the first delay time and the second delay time, wherein color temperature of white luminance displayed by the display unit is based on the first delay time and the second delay time, and wherein the first delay time and the second delay time are configured such that the color temperature of the white luminance displayed by the display unit becomes a certain value.