Cellulose acetate film prepared according to cooling...

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

Reexamination Certificate

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C428S001100

Reexamination Certificate

active

07136126

ABSTRACT:
An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550birefringence in the range of 0.0007 to 0.004.

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