Patent ID: 7847784

Claim:
A method for driving a liquid crystal display assembly, said liquid crystal display assembly comprising a transmission-type liquid crystal display comprising a display area made up of pixels arrayed in a two-dimensional matrix form, a planar light source device to illuminate said display area from the back, and a driving circuit to drive said planar light source device and said liquid crystal display, wherein a control signal to control the optical transmittance of each of said pixels is supplied to each of said pixels from said driving circuit; said method comprising, for each frame with image display of said liquid crystal display, the acts of: controlling the luminance of said planar light source device by said driving circuit such that, when assuming that said control signal equivalent to a driving signal having a value equivalent to an intra-frame driving signal maximum value X F-max which is the maximum value of the values of driving signals that are input to said driving circuit for driving all of said pixels making up said display area is supplied to a pixel, the luminance of said pixel is obtained; and controlling the luminance of said planar light source device by said driving circuit by adjusting the power said driving circuit provides to said planar light source device to at least three different levels during the frame based on the response speed of a liquid crystal material making up said pixels.