| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal display which easily increases the number of gradations. SOLUTION: The liquid crystal display is provided with a data line driver 420 for outputting pulse-width modulated data signals to be made into predetermined gradation values based on display image to data lines 220, a voltage level control part 500 for calculating and storing data signal voltages to be made into the predetermined gradation values based on the display image, and voltage shifting circuits 600 for shifting the data signal voltages. High gradation display is realized by pulse width modulation and voltage shift. COPYRIGHT: (C)2006,JPO&NCIPI
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