DISPLAY DRIVING CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE CONSTITUTED BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To excellently display an image on a liquid crystal display by greatly reducing power source noise generated at the time of driving. SOLUTION: When liquid crystal driving voltages V1 to V4 are switched, a parallel-connected switching element is operated with delay. For example, when the liquid crystal driving voltage V4 is switched to the liquid crystal driving voltage V1, a transistor is turned on to make delay of approximately 500ns to lμm through a delay circuit and then another transistor is also turned on to round the rising waveform of the liquid crystal driving voltage V1 and reduce a penetration current, thereby reducing the power source noise.