发明名称 METHOD OF PRODUCING ELLIPTICALLY POLARIZING PLATE AND IMAGE DISPLAY USING THE ELLIPTICALLY POLARIZING PLATE
摘要 <P>PROBLEM TO BE SOLVED: To provide a method of producing an elliptically polarizing plate of a broadband and a wide viewing field angle having excellent characteristics in an oblique direction as well and to provide an image display using the elliptically polarizing plate obtained through the method. <P>SOLUTION: The method of producing the elliptically polarizing plate according to the present invention comprises a step of subjecting a surface of a transparent protective film to alignment treatment, a step of forming a first birefringent layer by applying a liquid crystal composition onto the surface of the transparent protective film subjected to the alignment treatment, a step of laminating a polarizer on a surface of the transparent protective film opposite to the surface subjected to the alignment treatment and a step of forming a second birefringent layer by laminating a polymer film on a surface of the first birefringent layer. The elliptically polarizing plate has a relationship represented by the following expression (1) in angles &alpha; and &beta;. 2&alpha;+40&deg;<&beta;<2&alpha;+50&deg;, wherein &alpha; represents an angle between an absorption axis of the polarizer and an alignment direction of the transparent protective film and &beta; represents an angle between the absorption axis of the polarizer and a slow axis of the second birefringent layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI
申请公布号 JP2006178389(A) 申请公布日期 2006.07.06
申请号 JP20050115258 申请日期 2005.04.13
申请人 NITTO DENKO CORP 发明人 KAWAMOTO IKURO;UMEMOTO SEIJI;KAMIJO TAKUJI
分类号 G02B5/30;G02F1/1335 主分类号 G02B5/30
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