Patent ID: 7417615

Claim:
An active matrix display device comprising: a plurality of pixel electrodes disposed on a substrate in a matrix configuration; a liquid crystal sealed between the pixel electrodes and a common electrode; a plurality of switching elements connected to corresponding pixel electrodes; a first supplemental capacitance line supplied with a first potential; a second supplemental capacitance line supplied with a second potential, the first and second potentials alternating with a first cycle; a supplemental capacitance electrode provided for each of the pixel electrodes so that each supplemental capacitance electrode forms a capacitance between said each supplemental capacitance electrode and the first supplemental capacitance line or the second supplemental capacitance line; a driver circuit supplying to the pixel electrodes and the supplemental capacitance electrodes through the switching elements a first video signal and a second video signal that are opposite in polarity and alternate in a second cycle; and a correction circuit correcting the first and second video signals so as to reduce an effect of a dielectric constant of the liquid crystal that changes in response to a change in a potential applied to the liquid crystal on potentials of the pixel electrodes receiving the first video signal or the second vide signal.