Patent ID: 7084851

Claim:
A display device comprising: a memory device-built-in pixel portion including a plurality of data lines and a plurality of scan lines arranged in a matrix, a plurality of pixels disposed on respective intersections of the both lines, a plurality of pixel switching elements electrically conducting the data lines and the pixels based on scan signals supplied to the scan lines to write graphic data supplied to the data lines into the pixels, and a plurality of memory devices storing the graphic data supplied to the data lines and being constituted to be capable of supplying the graphic data stored to the pixels corresponding thereto; a data driver and a scan driver for controlling the write of the graphic data supplied to the data lines into the pixels in order to perform a first display; a memory device driver for controlling the write of the graphic data held in the memory devices into the pixels in order to perform a second display; a power source voltage generating unit for supplying a power source voltage to the data driver and the scan driver; and a power source voltage control circuit for stopping a supply of the power source voltage from the power source voltage generating unit to the data driver during a period of the second display.