| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device such as liquid crystal display device capable of providing a more suitable display image according to the using state, particularly, indoor use and outdoor use by an easy operation. SOLUTION: This transmission type display device comprises a transmission type display panel 3, a display panel driving means 2 for displaying a video signal on the display panel 3, a back light means 8 provided on the back surface of the display panel to illuminate the display part of the display panel from the back surface, a back light driving means 7 for driving the back light means 8, a brightness regulating means 4 for controlling the display panel driving means 2 to regulate the brightness of the video signal, and a back light luminance regulating means 5 for controlling the back light driving means 7 to regulate the luminance of the back light means 8. This device is further provided with a display state control means 6 for simultaneously controlling the brightness regulating means 4 and the back light luminance regulating means 5.
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