Patent ID: 6392625
Filing Date: 2002-05-21
Classification: G09G,H03K

Abstract:
In a liquid crystal display apparatus including a display unit having plural pixel elements arranged in the form of a matrix, and a signal circuit and a scanning circuit for driving said plural pixel elements, a level conversion circuit connected to the signal circuit and the scanning circuit and comprising:a first transistor and a second transistor, respective gate electrodes of said first transistor and said second transistor being connected to a bias voltage power supply; and a first resistance element and a second resistance element connected between respective drain electrodes of said first transistor and said second transistor and a power supply; wherein, to respective source electrodes of said first transistor and said second transistor, pixel element drive signals having a mutually different polarity and having a low amplitude are inputted; and wherein, from said respective drain electrodes of said first transistor and said second transistor, pixel element drive signals having a mutually different polarity and having a high amplitude are outputted.