| 摘要 |
An illuminance sensor detects an illuminance value for an environment in which a display device is placed and provides the illuminance value to a controller. The controller determines whether to cause the display device to make a transition to a power saving mode or not in accordance with the illuminance value inputted thereto. For the transition to the power saving mode, the controller stops the operation of a backlight drive signal generator to turn off a backlight unit, and stops the supply of power and a display signal to a liquid crystal panel.
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