METHOD OF PRODUCING OPTICAL FILM, OPTICAL FILM, POLARIZER PLATE, TRANSFER MATERIAL, LIQUID CRYSTAL DISPLAY DEVICE, AND POLARIZED ULTRAVIOLET EXPOSURE APPARATUS

阅读量:

13

申请(专利)号:

11/845256

申请日期:

08/27/2007

公开/公告号:

US20080055521

公开/公告日期:

03/06/2008

申请(专利权)人:

富士胶片株式会社

发明人:

H MizutaniN KawanishiT Sano

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被引量:

26

摘要:

A novel method of producing an optical film is disclosed. The method comprises steps (1) to (3) in this order: (1) preparing, on a surface of an alignment film, a layer of a polymerizable composition comprising a polymerizable liquid crystal compound and a dichroic polymerization initiator; (2) aligning molecules of said polymerizable liquid crystal compound in said layer in a first alignment state; and (3) irradiating said layer with polarized ultraviolet light to carry out polymerization of said polymerizable liquid crystal compound and fix molecules of said polymerizable liquid crystal compound in a second alignment state thereby to form an optically anisotropic layer, wherein a percentage of polarized ultraviolet light having an extinction ratio ranging from 1 to 8 is not greater than 15% with respect to an energy density of polarized ultraviolet light per unit area (J/cm 2 ).

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