Patent ID: 7733322
Filing Date: 2010-06-08
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: an OCB liquid crystal display panel which includes a pair of substrates and an OCB liquid crystal layer that is held between the pair of substrates; a surface light source device which illuminates the liquid crystal display panel; and a control unit which controls the liquid crystal display panel and the surface light source device, wherein the liquid crystal display panel includes a plurality of display pixels which are arrayed in a matrix, the control unit includes a non-video signal insertion unit which causes the display pixel to store a pixel voltage corresponding to a video signal in a first period within one frame period, and causes the display pixel to store a pixel voltage corresponding to an non-video signal in a second period that follows the first period; and a surface light source device driving unit which causes light to be emitted from the surface light source device at least in a period corresponding to the first period in which the pixel voltage corresponding to the video signal is held in the display pixel, and turns off the surface light source device in a period corresponding to the second period in which the pixel voltage corresponding to the non-video signal is held in the display pixel, and the pixel voltage corresponding to the non-video signal is configured to be set to a voltage which is greater than a voltage at which a liquid crystal transmittance takes a minimum value and which is at independent values compared to the pixel voltage corresponding to the video signal.