Title:
光学フィルム、偏光板及び液晶表示装置
Document Type and Number:
Japanese Patent JP4881340
Kind Code:
B2
Abstract:
The present invention provides an optical film including at least two optically anisotropic layers, wherein one optically anisotropic layer satisfies Expression (1) described below, the other optically anisotropic layer satisfies Expression (2) described below, and a slow axis of the one optically anisotropic layer is parallel to a slow axis of the other optically anisotropic layer, 0≰Re(450)/Re(550)≰0.5 Expression (1) 0.95≰Re(450)/Re(550)≰1.05 Expression (2) where Re (λ) represents an in-plane retardation value (unit: nm) of the corresponding optically anisotropic layer measured at a wavelength of λ nm.
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Inventors:
Michio Nagai
Application Number:
JP2008075267A
Publication Date:
February 22, 2012
Filing Date:
March 24, 2008
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B5/30; B32B7/02; G02F1/13363
Domestic Patent References:
| JP2002277635A | ||||
| JP2006293275A | ||||
| JP2001272536A | ||||
| JP2004227006A | ||||
| JP2000235185A |
Attorney, Agent or Firm:
Koichi Hirota
Yoshihiro Nagare
Naoko Matsuda
Yoshihiro Nagare
Naoko Matsuda