Patent ID: 6046791
Filing Date: 2000-04-04
Classification: C09K,G02F

Abstract:
A polymer dispersed liquid crystal electro-optical device, comprising:a liquid crystal polymer complex layer comprising a liquid crystal material and a polymer, wherein said liquid crystal material and said polymer are aligned in the same direction when no electric field is applied; andan electrode structure formed on each side of said liquid crystal polymer complex layer for applying an electric field to said liquid crystal polymer complex layer to align said liquid crystal material along the electric field so as to render said liquid crystal polymer complex layer in a light-scattering state;wherein said liquid crystal polymer complex layer is formed by:dissolving a liquid crystal material and a polymer precursor to form a solution;adding butylhydroquinone to said solution in a range of 0.0005-0.1% by weight with respect to said solution;polymerizing said polymer precursor to form a polymer; andphase separating said liquid crystal material and said polymer to form a liquid crystal polymer complex layer.