Patent ID: 7224341

Claim:
A liquid crystal device, comprising: a first operation mode conducting sequential driving; a second operation mode conducting simultaneous-multiple driving; a shift register that outputs a shifted signal, the shift register comprising: a first clocked inverter for inverting an input signal, an inverter for re-inverting the inverted signal, a second clocked inverter for feeding back the re-inverted signal to an input of the first clock inverter, and an output terminal comprising a NAND gate and an inverter in series; a transfer signal line that outputs a transfer signal based on output from the shift register; an enable signal supply unit that supplies a plurality of enable signals over separate enable lines during the time duration of the pulsewidth of the transfer signal, the enable signals each having a pulsewidth shorter than the pulsewidth of the transfer signal; an enable circuit comprising a NAND gate and an inverter in series that ANDs the transfer signal and the enable signals during the same time duration as the transfer signal to output a plurality of sampling signals during the time duration of the transfer signal, the sampling signals having the same pulsewidth and timing as the pulsewidth and timing of the enable signals; an input unit selecting one of the first operation mode and the second operation mode; and a control unit switching between the operation modes according to output of the input unit, and that controls the enable signal supply unit to output the enable signal sequentially during the first operation mode and simultaneously during the second operation mode.