Patent ID: 7173589

Claim:
A display device comprising: a plurality of gate signal lines disposed in a first direction; a plurality of drain signal lines disposed in a second direction different from the first direction; a pixel element selection transistor selecting a display pixel element in response to a scanning signal fed from one of the gate signal lines; and a retaining circuit disposed in the display pixel element, the retaining circuit holding an image signal fed from one of the drain signal lines through the pixel element selection transistor, the image signal retained in the retaining circuit being used for forming an image; and a signal selection circuit that receives the image signal held by the retaining circuit, receives more than one voltage, selects one of the voltages corresponding to the received image signal and applies the selected voltage to a pixel element electrode of the display pixel element, wherein the retaining circuit comprises a first inverter circuit receiving the image signal from one of the drain signal lines and a second inverter circuit positively feeding back an output of the first inverter circuit into an input of the first inverter circuit, and a threshold voltage of the first inverter circuit is smaller than a threshold voltage of the second inverter circuit.