Patent ID: 7268761

Claim:
A liquid crystal device comprising: M rows of scanning lines along a first direction, wherein M is an integer equal to or greater than 2, and N columns of data lines along a second direction which intersects with the first direction, wherein N is an integer equal to or greater than 2; M×N number of switching element respectively connected to one of the M rows of scanning lines and one of the N columns of data lines; M×N number of pixel electrodes respectively connected to one of the M×N number of switching element; M rows of opposite electrodes arranged oppositely to respective rows of the M×N number of pixel electrodes through a liquid crystal layer; a scanning line driving circuit configured to supply a scanning signal for selecting at least one of the M rows of scanning lines to the M rows of scanning lines; a data line driving circuit configured to supply a data signal to each of the N columns of data lines; and a polarity inverting circuit configured to invert a polarity of a voltage applied to the liquid crystal layer; wherein the polarity inverting circuit comprises: a memory section configured to hold a first electric potential or a second electric potential as an electric potential for each of the M rows of opposite electrodes, and updates the held electric potential every row scanning period; and an electric potential selecting circuit configured to select the electric potential supplied to the M rows of opposite electrodes based on the first electric potential or the second electric potential outputted from the memory section every row scanning period, and wherein the polarity inverting circuit inverts a polarity of a voltage applied to the liquid crystal layer for each one of the M rows of scanning lines.