Patent ID: 7696960

Claim:
A display device having pixel circuits disposed in a matrix, each pixel circuit comprising: a pixel TFT that is turned on and off by connecting one end to a data line for supplying a data signal, connecting a gate to a selection line, and setting a selection signal on the selection line to an H level or an L level; a storage capacitor for storing a voltage of the data signal supplied from the data line, one end of which is connected to another end of the pixel TFT and the other end of which is connected to a storage capacitor line; and a liquid crystal element for applying a voltage to a liquid crystal between electrodes, one electrode of which is connected to said another end of the pixel TFT and the other electrode of which is held at a common electrode potential; wherein said storage capacitor line, after said pixel TFT is turned on and the data signal on the data line is written to the storage capacitor, changes from a first level to a second level; either said first level or said second level is used in common with one of a plurality of voltage levels which are used in vertical driver which drives the said selection line; two types of data signals having opposite polarities with respect to said common electrode potential are supplied to said data line; said storage capacitor line is provided with two lines to correspond to each pixel circuit row, a plurality of pixel circuits disposed in a row direction are connected to at least one of the two storage capacitor lines and said two storage capacitor lines are controlled by two types of potentials; and the potential of said two storage capacitor lines is set in accordance with said data signal that is supplied in each pixel circuit.