PROCESS FOR PRODUCING ELLIPTICAL POLARIZATION PLATE AND IMAGE DISPLAY APPARATUS UTILIZING ELLIPTICAL POLARIZATION PLATE

摘要

A process for producing an elliptical polarization plate of broadband and wide viewing angle having excellent properties with respect to an oblique direction; such an elliptical polarization plate; and an image display apparatus. There is provided a process for producing an elliptical polarization plate, comprising the steps of forming a first birefringent layer on a surface of transparent protective film, superimposing a polarizer on another surface of transparent protective film and forming a second birefringent layer on the surface of the first birefringent layer, wherein the first birefringent layer and the polarizer are respectively arranged on opposite sides of the transparent protective film, and wherein the first birefringent layer forming step comprises the steps of coating an alignment base material with a liquid crystal material, forming the first birefringent layer from the liquid crystal material on the base material and transferring the first birefringent layer onto the surface of transparent protective film, and wherein the angle between absorption axis of the polarizer and retardation axis of the first birefringent layer, a, and the angle between absorption axis of the polarizer and retardation axis of the second birefringent layer, ß, exhibit a given relationship.