Laminated optical film, polarizing plate and liquid crystal...

Details Laminated optical film, polarizing plate and liquid crystal... Laminated optical film, polarizing plate and liquid crystal...

2011-08-02

2011-08-02

Cushwa, Michelle R Connelly (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C349S119000, C359S489010, C359S489070

Reexamination Certificate

active

07990493

ABSTRACT:
A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Relationship (1) is satisfied when a slow phase axis of the first optical anisotropic layer is substantially perpendicular to a slow phase axis of the second optical anisotropic layer,in-line-formulae description="In-line Formulae" end="lead"?−10 nm≦ΔRe1−ΔRe2≦10 nm  Relationship (1)in-line-formulae description="In-line Formulae" end="tail"?wherein Relationship (2) is satisfied when the slow phase axis of the first optical anisotropic layer is substantially parallel to the slow phase axis of the second optical anisotropic layer, andin-line-formulae description="In-line Formulae" end="lead"?−10 nm≦ΔRe1+ΔRe2≦10 nm   Relationship (2)in-line-formulae description="In-line Formulae" end="tail"?wherein an in-plane retardation value Re of the film as a whole satisfies 30 nm≦Re≦500 nm,where ΔRe1 denotes a value calculated from “Re1 (at an RH of 80%)—Re1 (at an RH of 50%)” concerning the first optical anisotropic layer, and ΔRe2 denotes a value calculated from “Re2 (at an RH of 80%)—Re2 (at an RH of 50%)” concerning the second optical anisotropic layer.

REFERENCES:
patent: 2009/0086128 (2009-04-01), Nakamura et al.
patent: 2009/0086138 (2009-04-01), Nakamura et al.
patent: 2009/0091694 (2009-04-01), Sasada
patent: 2006-039211 (2006-02-01), None

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