Patent ID: 7079122

Claim:
A scan-driving circuit which drives first to Nth (N is a natural number) scan lines of an electro-optical device including a plurality of pixels which are defined by the first to Nth scan lines and first to Mth (M is a natural number) signal lines, the first to Nth scan lines and the first to Mth signal lines crossing each other, comprising: a shift register which includes first to Nth flip-flops corresponding to the first to Nth scan lines, respectively, and connected in series, and sequentially shifts a given pulse signal; a level conversion section including first to Nth level shifter circuits which shift the voltage levels of the output nodes of the first to Nth flip-flops and output signals of the shifted voltage levels; and a scan line drive section including first to Nth drive circuits which sequentially drive the first to Nth scan lines corresponding to logic levels of output nodes of the first to Nth level shifter circuits, wherein the first to Nth scan lines are divided into a plurality of blocks, each block constituting a plurality of scan lines, wherein an input terminal which inputs output enable signals synchronized with scanning timings of the scan lines is provided in a block in which the plurality of scan lines are driven, wherein the scan line drive section includes first to Nth mask circuits which mask the logic levels of the output nodes of the first to Nth level shifter circuits based on the output enable signals, and wherein the first to Nth drive circuits drive the plurality of scan lines in a designated block at a time of a partial display in which scan-driving is performed on a block basis.