Patent ID: 6888524

Claim:
A liquid crystal display device responsive to a light source, comprising: a display surface having an optically active surface and an inactive surface, the optically active surface including a plurality of pixels cooperable to provide an adjustable transmissivity, the inactive surface disposed proximate the plurality of pixels; a sensing device for sensing a level of light emitted by the light source; a control circuit in communication with the sensing device, the control circuit configured to regulate a voltage in response to the sensed level of light; and a controller in communication with the control circuit and the display surface, the controller responsive to the regulated voltage to adjust the transmissivity of the display surface according to the sensed level of light; wherein the plurality of pixels and the inactive surface define a fill coefficient expressed as the ratio: Î· = Î£ â¢ â¢ F i F , wherein Î· is the fill coefficient, F i is a first area defined by the plurality of pixels and F is a second area defined by the display surface including the plurality of pixels and the inactive surface.