Patent ID: 6853371

Claim:
A display device comprising: a plurality of gate signal lines disposed in a predetermined direction on a substrate; a plurality of drain signal lines disposed in a direction different from the predetermined direction; a plurality of pixel elements which are disposed as a matrix, activated by a scanning signal fed through the gate signal line and provided with an image signal fed through the drain signal line; a pixel electrode provided within the pixel elements; a first display circuit which is disposed for the pixel elements and provides the pixel elements with the image signals; a second display circuit which is disposed for the pixel elements, include a retaining circuit holding the image signal and provides the pixel electrode with an voltage corresponding to the image signal retained by the retaining circuit; and a circuit selection circuit for selecting one of the first and second display circuit in response to a circuit selection signal disposed for the pixel elements; wherein the circuit selection signal is supplied to the circuit selection circuit through an electric power line which is used for supplying a power voltage to the retaining circuit.