| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device including a switching regulator type power generating circuit which achieves the improvement of display quality by making an output voltage more stable and suppressing the flickering of a screen. SOLUTION: In the display device including a switching regulator type direct current power generating circuit, a period at which a switching element is turned on is determined in such a way as to be elongated or shortened by a given width when a sign of an output voltage with respect to a setting voltage is fixed, and the period is determined in such a way as to be elongated or shortened differently from the given width when the sign is changed. COPYRIGHT: (C)2010,JPO&INPIT |
