US 2009/0257012 A1 · LAMINATED OPTICAL FILM, AND LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE LAMINATED OPTICAL FILM

Abstract

A laminated optical film according to an embodiment of the present invention includes a polarizer; a first optical compensation layer which has a refractive index ellipsoid showing a relationship of nx>ny>nz; and a second optical compensation layer which has a refractive index ellipsoid showing a relationship of nz>nx>ny, wherein the polarizer and the first optical compensation layer are placed so that an absorption axis of the polarizer is parallel to or perpendicular to a slow axis of the first optical compensation layer, and the polarizer and the second optical compensation layer are placed so that an absorption axis of the polarizer is parallel to or perpendicular to a slow axis of the second optical compensation layer.

Claims9

Dependent claims

A laminated optical film, comprising:

a polarizer;
a first optical compensation layer which has a refractive index ellipsoid showing a relationship of nx>ny>nz;
and
a second optical compensation layer which has a refractive index ellipsoid showing a relationship of nz>nx>ny,
wherein the polarizer and the first optical compensation layer are placed so that an absorption axis of the polarizer is parallel to or perpendicular to a slow axis of the first optical compensation layer, and
the polarizer and the second optical compensation layer are placed so that an absorption axis of the polarizer is parallel to or perpendicular to a slow axis of the second optical compensation layer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/412,894Filed 27 Mar 2009

Priority

JP 2008-1014409 Apr 2008

Published

15 Oct 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02F 1/133528
Structural association of cells with optical devices, e.g. polarisers or reflectors: polarisers
G02B 5/3033
Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state: in the form of a thin…
G02B 5/3083
Polarising elements: birefringent or phase retarding elements
G02F 1/133634
Birefringent elements, e.g. for optical compensation: the refractive index Nz perpendicular to the element surface being different from in-plane…

Laminated optical film, and liquid crystal panel and liquid crystal display apparatus using the laminated optical film

Life of this patent

Laminated optical film, and liquid crystal panel and liquid crystal display apparatus using the laminated optical film

Life of this patent

Abstract

Claims9