Patent ID: 6693617
Filing Date: 2004-02-17
Classification: G09G

Abstract:
A liquid crystal display apparatus comprising a sampling pulse generating circuit for generating a plurality of sampling pulses that carry out sampling of inputted signal, in which the inputted signal is sampled in accordance with the sampling pulses so as to be written into a display section as a display data,wherein the sampling pulse generating circuit includes: a shift register, for shift operation, having a plurality of set-reset type flip-flops in which a start pulse is supplied to a set terminal of a first stage flip-flop, and switching means provided for each of the flip-flops so that opening and closing of said each switching means is controlled in response to each output of the respective stage flip-flops so that a sampling pulse, having a pulse width controlled in accordance with the duty ratio of the clock signal, is outputted during the opening the sampling pulse being supplied to a set terminal of a next stage flip-flop and to a reset terminal of a previous stage flip-flop; and wherein the sampling pulse generating circuit receives a clock signal whose duty ratio of a high level period with respect to a low level period is less than 50 percent, and generates the sampling pulse in accordance with the clock signal.