公开(公告)号：US20100296030A1

公开(公告)日：2010-11-25

申请号：US12783752

申请日：2010-05-20

申请人： Takashi Shimizu ,  Akinori Nishimura ,  Toshiki Omine ,  Hirofumi Katami

发明人： Takashi Shimizu ,  Akinori Nishimura ,  Toshiki Omine ,  Hirofumi Katami

IPC分类号： G02F1/1335 ,  G02B5/30

CPC分类号： G02B5/3083 ,  G02F1/133634 ,  G02F2001/133635 ,  G02F2413/12

摘要： An optical film that includes an optical compensation layer having a refractive index anisotropy satisfying nx>ny>nz. The optical compensation layer contains a polyvinyl alcohol resin subjected to ultraviolet cross-linking with a cross-linking agent having at least two double bonds, where nx: a refractive index in a direction (a slow axis direction) in which an in-plane refractive index of the optical compensation layer reaches its maximum ny: a refractive index in a direction (a fast axis direction) that is orthogonal to the nx direction within a plane of the optical compensation layer nz: a refractive index in a thickness direction of the optical compensation layer that is orthogonal to each of the nx and ny directions.The optical film has a high retardation developability and high retardation reliability, uses a material that is inexpensive as compared to polyimide and has a wide choice of solvents.

摘要翻译： 一种光学膜，包括具有满足nx> ny> nz的折射率各向异性的光学补偿层。 光学补偿层包含与具有至少两个双键的交联剂进行紫外线交联的聚乙烯醇树脂，其中nx：在面内折射的方向（慢轴方向）上的折射率 光学补偿层的折射率达到其最大值ny：与光学补偿层的平面内的nx方向正交的方向（快轴方向）的折射率nz：光学补偿层的厚度方向的折射率 补偿层，其与nx和ny方向中的每一个正交。 光学膜具有高延迟显影性和高延迟可靠性，使用与聚酰亚胺相比便宜的材料并且具有广泛的溶剂选择。