Abstract: Lower level of data latch holding a digital image data and a positive selector arranged immediately above positive gradation voltage line, for selecting positive analog gradation voltage of positive gradation levels are take as a set, and upper level of data latch holding a digital image data and a negative selector arranged immediately above negative gradation voltage line, for selecting negative analog gradation voltage of negative gradation levels are take as a set. Two sets are arranged in alignment in vertical direction. A plurality of sets of vertically aligned sets are arranged horizontally to shorten a length in horizontal direction with respect to gradation voltage lines.

Abstract: A constant voltage supplying circuit is disposed between a voltage output terminal of a voltage generation circuit for outputting a voltage having the same polarity as that of a reference voltage, which can be arbitrarily set, and having a greater absolute value than the reference voltage, and a load. This constant voltage supplying circuit includes a first field effect transistor a gate of which is connected to its drain, and to a source of which the reference voltage is supplied, and a second field effect transistor which has the same conductivity type as the first field effect transistor, a gate of which is connected to the drain of the first field effect transistor, a source of which is connected to the voltage output terminal of the voltage generation circuit, and a drain of which is connected to the ground. According to the circuit constitution, the output voltage of the voltage generation circuit can be stabilized to a desired voltage value (the same voltage value as the reference voltage).