Optically anisotropic material, process for producing it, and retardation plate and liquid crystal display device using same
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0617111A1
公开(公告)日:1994-09-28
By using an optically anisotropic film having the optical axis substantially parallel to the normal line of the film and comprising a polymer of a liquid crystal oligomer having positive anisotropy of refractive index and showing nematic or smectic phase, or by lamining the optically anisotropic film and a transparent or semitransparent polymer film, or by combining the optically anisotropic film with a uniaxially oriented retardation film, it is possible to obtain a composite retardation plate with a large viewing angle, and this retardation plate can be applied to a liquid crystal display device.
光学各向异性薄膜的光轴与薄膜的法线基本平行,由具有正各向异性折射率的液晶低聚物聚合物组成,并显示向列相或共晶相、或将光学各向异性薄膜与透明或半透明聚合物薄膜层叠,或将光学各向异性薄膜与单轴取向的缓凝薄膜结合,可获得具有大视角的复合缓凝板,这种缓凝板可应用于液晶显示设备。