| 摘要 |
PROBLEM TO BE SOLVED: To adjust brightness of a screen accompanied by switching a driving circuit and a display direction. SOLUTION: A VOY voltage voltage source 131 generates and outputs six kinds of voltage values. A V5Y voltage source 132 generates and outputs also six kinds of voltage values. Selection circuits 134 and 135 select input voltages based on the driving system selection signals DS1, DS2 showing the kinds of driving systems and a Y-direction selection signal YS, and generate selection voltages VOY, V5Y of a scanning signal. Thus, since it is possible to adjust voltage to be applied on a liquid crystal associated with switching of a drive system and a display direction, hue and brightness of an image can be corrected.
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