| 摘要 |
A light source device capable of adjusting luminance distribution of a display picture in consideration of lightness of surrounding environment (environment light) not depending on a content of the display picture is provided. An outside light sensor 16 receives outside light (environment light Ls) around the device. According to a light quantity of the received environment light Ls, a backlight control section 12 respectively controls a light emission quantity of each partial lighting section 4 in a light source section 10. It is possible that the light emission quantity of each partial lighting section 4 is respectively controlled by using luminance information of a picture contained in an RGB signal supplied from an RGB processing section 60 in addition to the light quantity of the environment light Ls.
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