Patent ID: 7656382

Claim:
A liquid crystal display device, comprising: a liquid crystal display panel having a plurality of data lines, a plurality of gate lines crossing the plurality of data lines, and a plurality of liquid crystal cells; a data driver to convert digital data into analog data; a channel selecting part arranged to sequentially select analog outputs of the data driver; a sampling and holding part arranged to sample the analog data from the channel selecting part to supply the sampled data to the data lines; and a gate driver to sequentially supply gate pulses to the gate lines, wherein at least one of the data driver and the gate driver includes a shift register having a plurality of stages, each stage includes an input circuit part arranged to receive an input signal; an exclusive OR circuit arranged to generate a toggle signal by an exclusive OR operation on a non-inversion output and an inversion output of the input circuit part; and an output circuit part arranged to supply one of a clock signal and a first feedback signal from a fourth inverter to an input terminal of the next stage in response to the toggle signal, wherein each of the stages is arranged to generate output signals partially overlapped with output signals from other stages and of which the phases are sequentially shifted; wherein the input circuit part includes a first multiplexer arranged to receive the input signal; and a first inverter arranged to invert an output signal from the first multiplexer; wherein the exclusive OR circuit includes a first NAND gate arranged to generate an output by a NAND operation on an output signal of the first multiplexer and a second feedback signal from a third inverter; a second NAND gate arranged to generate an output by a NAND operation on an output signal from the first inverter and the first feedback signal from the fourth inverter; and a third NAND gate arranged to generate an output by a NAND operation on output signals from the first and second NAND gates.