Patent ID: 6570551
Filing Date: 2003-05-27
Classification: G09G

Abstract:
A method of driving a liquid crystal display device, including a first substrate whereon an active three-terminal element having a gate electrode connected to a scanning line, a drain electrode connected to a pixel electrode and a source electrode connected to a reference line is arranged, a second substrate which faces said first substrate and has a signal line arranged thereon, and a layer of liquid crystal between said pixel electrode and said second substrate, by applying an electric field to said layer of liquid crystal, said method comprising the step of setting an average voltage of reference line drive voltages VcomH and VcomL applied to said reference line for AC-driving the liquid crystal, wherein each reference line voltage changes alternatively between VcomH and VcomL, VcomH being a higher voltage and VcomL being a lower voltage, such that said average voltage of reference line drive voltages is set higher than an average voltage of signal line drive voltages for each grayscale.