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摘要

PROBLEM TO BE SOLVED: To realize a liquid crystal display apparatus only by a digital circuit and to suppress the generation of a high frequency.;SOLUTION: A PWM converter 24 of a driving device 10 accepts each of segment assignment signals which is sequences of the signals indicating the sets of the potentials relating to respective segment lines, outputs the first PWM signals corresponding to the different potentials in one phase, accepts each of the common assignment signals which is the sequences of the signals indicating the set of the potentials relating to each common line, and outputs the second PWM signals corresponding to the set of the different potentials in one phase. The PWM converter 24 creates the PWM signals which are the PWM pattern signals of the section of 1/2ⁿ phase representing the potential and are not at least the same in all relating to each potential 2^(n-1) times, thereby creating the respective PWM signals of the segment lines and the common lines. The first PWM signals are respectively outputted to the segment lines and the second PWM signals are respectively outputted to the common lines.;COPYRIGHT: (C)2008,JPO&INPIT