Patent ID: 6365239
Filing Date: 2002-04-02
Classification: C09K,G02F,Y10T

Abstract:
A polymer dispersion type liquid crystal display element in which a polymer dispersion type liquid crystal is sandwiched between a pair of substrates each having an electrode at the inside thereof, said polymer dispersion type liquid crystal being such that liquid crystal droplets are dispersed and held in a continuous phase of matrix comprising polymer compound or are dispersed and held in networks of a three dimensional network form of matrix comprising polymer compound, wherein, when capacitance hysteresis in an operating temperature of said polymer dispersion type liquid crystal display element is defined by Chys=(C2âˆ’C1)/Cmax, the Chys for any applied voltage V is 1.5% or less, where C1 is capacitance for any applied voltage V, which is in the process of rising, of a voltage-capacitance characteristic; C2 is capacitance for the applied voltage in the process of dropping; and Cmax is capacitance for the maximum applied voltage.