Patent ID: 8013827

Claim:
An image display device that includes a plurality of pixel circuits, which are mounted on a substrate, formed with a thin-film transistor, and arranged in a matrix form; a plurality of data lines, which transmit an image signal to the plurality of pixel circuits; a plurality of gate lines, which intersect with the data lines and transmit a scanning pulse to the plurality of pixel circuits; and a drive circuit, which drives the data lines and the gate lines, the image display device comprising: an oscillator circuit that independently oscillates without an external synchronization signal and is formed with a thin-film transistor on the substrate; and a plurality of level shifters that are formed with a thin-film transistor; wherein the plurality of level shifters each have a shutdown function for reducing the power consumption of the level shifters; wherein the plurality of level shifters include a first level shifter and a group of second level shifters; wherein the shutdown function of the first level shifter is controlled by an output pulse of the oscillator circuit; and wherein the shutdown function of each second level shifter of the group of second level shifters is controlled by an output signal of the first level shifter.