| 摘要 |
PROBLEM TO BE SOLVED: To prevent occurrence of foggy irregular after-image phenomenon on a display screen, particularly when a power source is off with a reflection-type LCD display device and the impairment of the luxurious feel of the LCD display device. SOLUTION: This LCD display device is provided with a power source operation timing control section 17, which controls the power sources of the respective sections of the LCD and video signal output at the prescribed timing. When the power source is off, a video changeover switch 8 is first changed over in a video-setting section 10 to select a black screen display signal 12, so that a black screen is displayed on the screen. Next, this black screen is held in a hold circuit section 4 via a video fixed signal output section 15, and a gate power source is turned off in a gate power source control section 21. A common electrode is turned off in a common electrode control section 22, after lapse of the prescribed time and further the source power source and the power source of the hold circuit are turned off by a source power source control section 20 after the prescribed time. When the power source is on, the output of the video signals fixed thus far by the hold circuit section 4 is permitted upon lapse of the prescribed time, after the LCD power source is turned on and thereafter the output of the video signals is executed.
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