An electro-optical device includes: a plurality of scanning lines; a plurality of
data lines blocked for every “m” (m is an integer of 2 or greater) columns; pixels provided corresponding to the scanning lines and the
data lines and showing
grayscale specified by data signals sampled to
data lines when a scanning line is selected; a scanning line
driving circuit which selects the plurality of scanning lines in a predetermined order; a sampling
signal output circuit which sequentially outputs a plurality of sampling signals; and a sampling circuit which has sampling switches provided in the data lines, respectively, and having their one ends connected to the data lines, and which turns on the sampling switches to sample data signals supplied to “n” (n is an integer of 2 or greater)
image signal lines, to the data lines. The sampling circuit groups the blocks for every “n” blocks, makes individual blocks in the same group correspond to different
image signal lines, respectively, to connect the other ends of the sampling switches in the individual blocks to corresponding
image signal lines, supplies one sampling
signal to two adjacent groups, and when any one sampling
signal is supplied, simultaneously turns on sampling switches in the same columns in “n” blocks belonging to one group of two groups corresponding to the sampling signal.