US 2010/0137578 A1 · CELLULOSE ESTER FILM FOR OPTICAL USE, AND POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY USING SUCH CELLULOSE ESTER FILM FOR OPTICAL USE

Abstract

Disclosed is a cellulose ester film for optical use which contains an ultraviolet absorbent and hardly suffers from retardation fluctuations. The cellulose ester film is excellent in spectral absorption property as an optical film. In addition, the cellulose ester film is free from coloration and has excellent transparency, which having sufficient ultraviolet absorption and excellent long-term light resistance. Also disclosed are a polarizing plate and liquid crystal display wherein high contrast is maintained by using such a cellulose ester film for optical use. Specifically disclosed is a cellulose ester film for optical use which is characterized by containing at least one compound represented by one of the general formulae 1-3. Also specifically disclosed are a polarizing plate and liquid crystal display using such a cellulose ester film for optical use.

Claims8

Dependent claims

A cellulose ester film for optical use comprising at least one compound represented by Formulae 1, 2 or 3:

in Formulae 1 to 3, R1 and R2 each are a substituent;
X is —COO—, —OCO—, NR11CO—, —CONR11—, —O—, —NR12R13—, —SO2NR14—, —NR14SO2—, —S—, or —SO2—;
L1 is a divalent linking group;
L2 is a trivalent linking group;
L3 is a tetravalent linking group;
R11, R12, R13 and R14 each are a hydrogen atom, an alkyl group, or an aryl group;
p is an integer of 0 to 3;
and q is an integer of 0 to 4.

5 more elements

Dependencies are inferred from the claim text.

Cellulose ester film for optical use, and polarizing plate and liquid crystal display using such cellulose ester film for optical use

Life of this patent

Cellulose ester film for optical use, and polarizing plate and liquid crystal display using such cellulose ester film for optical use

Life of this patent

Abstract

Claims8