Patent ID: 8390557

Claim:
A display panel drive circuit for outputting data signals to data lines of a display panel, said circuit comprising; a first amplifier stage receiving a first grayscale voltage to output a first signal; a first output stage outputting a first data signal to a first output terminal; a second output stage outputting a second data signal, to a second output terminal; and a switch circuitry including a plurality of first switches provided between said first amplifier stage and said first and second output stages, wherein said switch circuitry is controlled in a first period so that said first signal is fed to said first output stage and said first data signal outputted from said first output stage is fed back to said first amplifier stage, wherein said switch circuitry is controlled in a second period so that said first signal is fed to said second output stage and said second data signal outputted from said second output stage is fed back to said first amplifier stage, wherein said first output stage includes: a first transistor connected to a first power line of a first voltage level higher than a standard voltage level; a second transistor connected to a second power line of a second voltage level lower than said standard voltage level; and third and fourth transistors connected to a third power line of said standard voltage level, and wherein said second output stage includes: a fifth transistor connected to said first power line; a sixth transistor connected to said second power line; and seventh and eighth transistors connected to said third power line.