Patent ID: 8896588

Claim:
A liquid crystal display device comprising: a liquid crystal display panel having a number of pixels; wherein each of said pixels has a pixel electrode to which an image voltage is supplied and a counter electrode to which a common voltage is supplied; and wherein when two pixels adjacent to each other along one display line are a first pixel and a second pixel, an image voltage at a potential higher than that of the common voltage supplied to the counter electrode is applied to the pixel electrode of the first pixel and an image voltage at a potential lower than that of the common voltage supplied to the counter electrode is applied to the pixel electrode of the second pixel when the image voltage is written into the pixel electrode; a common voltage generating circuit for generating a common voltage supplied to each of the counter electrodes of said pixels; a feedback means for detecting a fluctuation in the potential of the common voltage in a number of places within each of said counter electrodes so that the fluctuation is fed back to said common voltage generating circuit; and a supply end for supplying said common voltage to each of said counter electrodes from said common voltage generating circuit, characterized in that on the basis of a fluctuation in the potential that has been fed back by said feedback means, said common voltage generating circuit supplies a common voltage that is gained by superposing a reverse correction voltage for offsetting said fluctuation in the potential on a reference common voltage, which is a common voltage before said fluctuation in the potential is fed back, to the counter electrode; and when point A is located at a distance away from said supply end and point B is located closer to said supply end than point A, the voltage that fluctuates at said point A is voltage A and the voltage that fluctuates as said point B is voltage B, said feedback means detects fluctuations in the potential in two places for said voltage A and said voltage B so that the fluctuations are fed back to said common voltage generating circuit.