Patent ID: 7427973

Claim:
A display device having at least a different resolution first mode and second mode having a lower resolution than said first mode, comprising: a pixel portion comprised of pixel circuits, for writing pixel data into pixel cells through switching elements, arranged so as to form a matrix of at least a plurality of rows; a plurality of scan lines arranged so as to correspond to a row arrangement of said pixel circuits and controlling conduction of said switching elements; at least one signal line arranged so as to correspond to a column arrangement of said pixel circuits and propagating said pixel data; and a vertical drive circuit including a plurality of switch circuits, each switch circuit coupling an adjacent plurality of scan lines in the row direction, the switch circuits adapting the vertical drive circuit to successively transmit scan pulses along said scan lines in a row direction and successively select the pixel circuits connected to the scan lines in units of rows in said first mode, and successively scan transmit scan pulses along adjacent pluralities of said scan lines in the row direction and successively select the pixel circuits connected to said plurality of scan lines in units of the plurality of rows in said second mode; and wherein each switch circuit include an input for the adjacent scan lines and at least one mode signal.