| 摘要 |
PROBLEM TO BE SOLVED: To provide driving power sources for a liquid crystal which enables finely to adjust a screen of a liquid crystal display. SOLUTION: In the driving power sources for a liquid crystal, a DC output voltage VOUT2 is divided by resisters R1-R5 connected in series and these individual divided voltages V1-V4 is supplied through voltage followers 131-134, to drivers of a liquid crystal display as the driving voltages. Terminals 27, 28 for adjustment, to which an external adjusting resister RA like, for example, a variable resister for finely adjusting brightness of a screen of a liquid crystal display, are connected to both ends of the resister R3.
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