Patent ID: 6940482

Claim:
An electrooptic device, comprising: a plurality of pixels to perform a gradation display according to a level of a supplied driving signal; a pixel electrode provided for each of the pixels; a memory to store n-bit (n being a natural number of 2 or more) gradation data of each of the pixels; a pulse width modulation circuit including a comparator circuit to compare the gradation data stored in the memory and n-bit gradation signals, and a latch circuit to output a driving signal; and a switching circuit to apply at least one of a voltage to turn on each of the pixels and a voltage to turn off each of the pixels to the pixel electrode according to the driving signal level, the comparator circuit including: n first switching elements respectively switched according to the n-bit gradation data and connected in series between first and second terminals; n second switching elements respectively switched according to the n-bit gradation signals successively updated and respectively connected in parallel to the n first switching elements; and a conductive/nonconductive state between the first and second terminals being controlled according to the gradation data and the gradation signals, and results of comparison between the gradation data and the gradation signals being output to the latch circuit.