Patent ID: 6486864
Filing Date: 2002-11-26
Classification: G09G

Abstract:
A liquid crystal display device, comprising:a plurality of first electrodes; a plurality of second electrodes crossing the first electrodes; a plurality of switching elements each provided in a vicinity of an intersection of a first electrode and a second electrode; a plurality of pixel electrodes respectively provided in a plurality of regions which are arranged in a matrix and partitioned from one another by the first electrodes and the second electrodes; a plurality of the first electrodes to each of which a gate voltage is applied for turning ON/OFF each of the switching elements; a plurality of the second electrodes to each of which a source voltage is applied; and a plurality of third electrodes to each of which a common voltage is applied, the third electrodes being arranged so that a liquid crystal layer is interposed between the third electrodes and the pixel electrodes, wherein: the source voltage comprises a voltage corresponding to an image signal and another voltage corresponding to an assist signal; and the common voltage has different values between an image signal writing scanning period and at least one assist signal writing scanning period, the image signal writing scanning period being defined as a period during which the voltage corresponding to the image signal is applied, and the assist signal writing scanning period being defined as a period during which the voltage corresponding to the assist voltage is applied.