Abstract: A display apparatus that can perform a high quality moving picture display and provides improved color purity, and an illumination device used in the display apparatus are provided. The display apparatus includes an illumination device that includes a first light source that emits light of a first color and a second light source that emits light of a second color complementary to the first color, a gate driver that sequentially selects each of scanning lines at a cycle of 0.5 frames, a data driver that, at a first half of one frame time period, writes a data signal into each of pixels of the first color, and at a latter half thereof, writes a data signal into each of pixels of the other two colors; and a switch circuit that, at the first half of one frame time period, switches on the first light source while switching off the second light source, and at the latter half of the time period, switches on the second light source while switching off the first light source.

Abstract: A light source device and a display device are disclosed of which high display quality can be maintained by correcting luminance or a color tone without making a user feel strangeness or inconvenience. A light source device is disclosed in at least one embodiment, including light source blocks each of which has red-color light-emitting diodes, green-color light-emitting diodes and blue-color light-emitting diodes and is capable of independently adjusting luminance of the three color diodes, a photo-receiving mechanism arranged to photo-receive light, and a correcting operation control mechanism arranged to calculate correction amounts of the luminance of the light sources in each of the blocks based on photo-receiving amounts of the photo-received light in order to maintain uniform luminance or a uniform color tone among the blocks, wherein the mechanism controls the mechanism to photo-receive the light when a termination operation of the light source device is performed.

Abstract: In one embodiment of the present invention, a liquid crystal panel includes a plurality of R sub-pixels that transmit red light, and a plurality of GB sub-pixels that transmit green and blue light. An R backlight emits red light continuously, whereas a G backlight for emitting green light and a B backlight for emitting blue light glow intermittently at mutually exclusive times, each backlight glowing once within one screen display period. A circuit for driving the liquid crystal panel drives the R sub-pixels based on a video signal, and the GB sub-pixels based on either a video signal selected in accordance with the glowing of the G backlight and the B backlight. Red blinking is prevented in such a manner, thereby preventing photosensitive epilepsy. Thus, it is possible to achieve a display device that provides a bright display screen without any adverse effect on the physical condition of humans.

Abstract: In a lighting unit, fluorescent lights and LEDs having different spectroscopic characteristics are alternately arranged in a direction X on an irradiation plane. The fluorescent lights are arranged in certain intervals so as to provide uniform light intensity even around the end portions of the direction X. The LEDs installed at the ends of the direction X have a light intensity that is weaker than that of other LEDs in order to provide uniform light intensity around the end portions. As a result, the lighting unit provides uniform light intensity across the entire irradiation surface.