Optical compensation sheet, polarizing plate and liquid...

Details Optical compensation sheet, polarizing plate and liquid... Optical compensation sheet, polarizing plate and liquid...

2006-03-20

2008-08-12

Morris, Terrel (Department: 1794)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C349S117000, C349S118000

Reexamination Certificate

active

07410679

ABSTRACT:
An optical compensation sheet is provided and includes: a cellulose acylate film having optical anisotropy and meeting all of requirements represented by the following expressions (1) to (3); and an optically anisotropic layer having a slow axis orthogonal to a slow axis of the cellulose acylate film.in-line-formulae description="In-line Formulae" end="lead"?2.6≦X+Y<3.0  Expression (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0≦X≦1.8  Expression (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1.0≦Y<3.0  Expression (3)in-line-formulae description="In-line Formulae" end="tail"?X represents a substitution degree of acetyl group and Y represents a total sum of substitution degrees of propionyl, butanoyl, pentanoyl and hexanoyl groups.

REFERENCES:
patent: 2004/0233363 (2004-11-01), Murayama et al.
patent: 2006/0221275 (2006-10-01), Matsufuji
patent: 2002-192541 (2002-07-01), None
patent: 2003-344657 (2003-12-01), None
patent: WO-2004/068226 (2004-08-01), None

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