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Patent Searching and Data


Title:
OPTICAL FILM, POLARIZING PLATE USING THE SAME AND DISPLAY DEVICE AND MANUFACTURING METHOD OF THE OPTICAL FILM
Document Type and Number:
Japanese Patent JP2003248104
Kind Code:
A
Abstract:

To provide an optical film having a smaller number of curls, fewer unevenness, no cracks and excellent visibility when a metal oxide layer is formed using the film.

In the optical film, a dope containing a solvent ester containing substantially no chlorine-based solvent and a cellulose whose total acyl group substitution degree is 2.6-2.85, and whose molecular weight distribution ratio Mw/Mn is 1.0-3.0 is made to flow and extend on a metal support, dried until it can be peeled, then, peeled. Thereafter, a metal oxide layer is formed directly or via other layers on a cellulose ester film obtained by drying while imparting a tension in the width or longitudinal direction.


Inventors:
MURAKAMI TAKASHI
Application Number:
JP2002049724A
Publication Date:
September 05, 2003
Filing Date:
February 26, 2002
Export Citation:
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Assignee:
KONISHIROKU PHOTO IND
International Classes:
G02B5/30; B29C41/24; B29C41/26; B29D7/01; G02B1/11; G02B1/111; B29K1/00; B29L7/00; (IPC1-7): G02B1/11; B29C41/24; C08J5/18; G02B5/30