Patent ID: 6496170
Filing Date: 2002-12-17
Classification: G09G

Abstract:
A liquid crystal apparatus, comprising:a liquid crystal device including an active matrix substrate, a counter substrate disposed opposite thereto, and a liquid crystal disposed between the active matrix substrate and the counter substrate; said active matrix substrate having thereon a plurality of scanning signal lines, a plurality of data signal lines intersecting the scanning signal lines, a plurality of switching devices each disposed at an intersection of the scanning signal lines and the data signal lines and connected to an associated one of the scanning signal lines, and a plurality of pixel electrodes each connected via one of the switching devices to an associated one of the data signal lines and form a pixel together with the liquid crystal thereat for applying a data signal voltage to the liquid crystal at the pixel; said liquid crystal having a spontaneous polarization and causing a state change accompanied with comsumption of electric charge completed by taking a response time, and drive means for sequentially selecting the scanning signal lines each in a scanning selection period and applying data signal voltages to the pixels along an associated scanning signal line, wherein the scanning selection period for a scanning signal line is shorter than the response time for the liquid crystal at a pixel on the scanning signal line thus being liable to fail in completing consumption of electric charge so as to result in a desired state change, and the data signal voltage applied to the pixel is set to include a compensation voltage for compensating for a voltage decrease caused by electric charge consumed in a scanning non-selection period subsequent to the scanning selection period.