发明名称 光学積層体
摘要 <P>PROBLEM TO BE SOLVED: To provide a thin optical laminated body excellent in durability and optical uniformity. <P>SOLUTION: In the optical laminated body including: an A layer made of a resin A whose intrinsic birefringence value is negative; and a B layer made of a transparent resin B, ¾the transverse plane retardation of the A layer¾>¾the transverse plane retardation of the B layer¾ is allowed to satisfy, the total thickness of the A layer and the B layer is &le;60 &mu;m, the ratio of the thickness of the A layer to the total thickness of the A layer and the B layer exceeds 40%, and the total draw ratio reaches &ge;2.3 times. <P>COPYRIGHT: (C)2011,JPO&INPIT
申请公布号 JP5869198(B2) 申请公布日期 2016.02.24
申请号 JP20090230245 申请日期 2009.10.02
申请人 日本ゼオン株式会社 发明人 森田 崇
分类号 G02B5/30;B32B7/02;G02F1/13363 主分类号 G02B5/30
代理机构 代理人
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