Patent ID: 6558759
Filing Date: 2003-05-06
Classification: C09K,G02F

Abstract:
A liquid crystal display device comprisinga) a pair of transparent substrates, b) each substrate having on one of its surfaces a coating of a transparent electrically conducting material which serves as an electrode, and c) a nematic discotic material sandwiched between the coated surfaces of the said substrates thereby forming a cell, the cell residing between a pair of crossed polarizers, said nematic discotic material having a negative dielectric anisotropy and molecules of the discotic material adhering flat against said coated surfaces, wherein when no electric field is applied thereto the discotic material is uniformly oriented with the director thereof being perpendicular to said surfaces, and when an electric field is applied in a z-direction perpendicular to the coated surfaces, the director in the discotic material is realigned parallel to the coated surfaces with random orientation in the x-y plane.