Reflective liquid crystal display apparatus

Abstract

It is an object to provide a reflective LCD apparatus to obtain a wider view angle and a desired black view. A reflective LCD apparatus according to the invention comprises a phase difference film (retardation film), a liquid crystal layer and a reflector for reflecting incident light. The reflective LCD apparatus suffices in a plurality of Stokes parameter points of said reflected light are plotted on a approximately straight line on a Poincare sphere, indicative of light polarization state by said liquid crystal layer, sighted in a plane cross section, and the relation between said liquid crystal layer and said phase difference film with respect to said reflected light substantially satisfies: cRet(λ)=λθ(λ) wherein Ret (λ) represents retardation with respect to light having a wavelength of λ in said phase difference film; when the respective Stokes parameter points of said reflected light are projected on a plane parallel to the plane including an origin of said Poincare sphere and the Stokes parameter points of said reflected light, θ(λ) represents an angle between the respective projected points and an axis vertical to said plane cross sectional sight of said Poincare sphere including said origin point; and c represents a constant.

Dependencies are inferred from the claim text.