| 摘要 |
A terminal device includes a display (1) displaying information, a backlight control unit (3) controlling backlight luminance of the display, an illuminance sensor (4) detecting a surrounding brightness, an opening/closing detection unit(5) detecting opening or closing of the housing, a memory (6) storing a predetermined luminance value and a luminance correction value for illuminance, and a control unit (7) controlling the display, the backlight control unit, the illuminance sensor, the opening/closing detection unit and the memory. When the opening/closing detection unit detects the change of the state of the housing from the closed state to the open state, the control unit reads the predetermined luminance value from the memory, causes the backlight control unit to light the display backlight at that luminance value, and then causes the backlight control unit to change the luminance of the display backlight according to the surrounding brightness detected by the illuminance sensor and the luminance correction value for illuminance stored in the memory. |
