| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal driver circuit for reducing current consumption and a circuit area. SOLUTION: A liquid crystal driver 100 inverts and drives a plurality of data lines LD of a liquid crystal panel. A source driver 10 generates a drive voltage Vd corresponding to brightness data indicating brightness of pixels and supplies it to corresponding data lines. A common electrode driver 40 supplies a common voltage Vcom of an alternating current to a common electrode of a liquid crystal panel. A reference voltage generation circuit 30 contains a plurality of resistors connected in series between a power source terminal 32 and a grounding terminal 34, and generates a plurality of reference voltages generated in a plurality of taps provided on connection points of adjacent resistors. A source driver 10 generates the drive voltage Vd by using one voltage selected from the plurality of the reference voltages. A common electrode driver 40 generates the common voltage Vcom by using the one voltage selected from the plurality of the reference voltages. COPYRIGHT: (C)2009,JPO&INPIT
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