Patent ID: 7317437
Filing Date: 2008-01-08
Classification: G02F,G09G

Abstract:
1. An active matrix liquid crystal display including a plurality of active components each for driving a corresponding one of a plurality of pixels of said display, said display comprising: a layer of cholesteric liquid crystal material including a plurality of pixels that produce images having various levels of light reflectance including a level of minimum reflectance, a level of maximum reflectance and levels of reflectance therebetween, said level of maximum reflectance and said level of minimum reflectance being stable in the absence of an electric field; an active matrix array including conductive active elements each of which corresponds to one of said plurality of pixels of said liquid crystal layer; and drive electronics adapted to provide signals to the active elements of said active matrix display in order to: wherein said pixels are thereby updated and maintained at said levels of reflectance.