Liquid crystal cells – elements and systems – Liquid crystal system – Computational system employing liquid crystal element
Reexamination Certificate
2011-01-18
2011-01-18
Kianni, K. Cyrus (Department: 2883)
Liquid crystal cells, elements and systems
Liquid crystal system
Computational system employing liquid crystal element
C349S018000
Reexamination Certificate
active
07872695
ABSTRACT:
A process of producing an optical compensation sheet is provided, which comprises applying a solution comprising a liquid crystalline compound and a photo-polymerization initiator on a transparent support, drying the solution at a drying temperature which satisfies the following formula (1) to align the liquid crystalline compound, and then fixing the liquid crystalline compound by light irradiation to form an optical anisotropic layer:in-line-formulae description="In-line Formulae" end="lead"?T≦0.0014×Ecoh−65 (1)in-line-formulae description="In-line Formulae" end="tail"?wherein T represents drying temperature (° C.), Ecoh represents condensation energy (J/mol) of the photo-polymerization initiator, by which an optical compensation sheet of stable optical characteristics can be obtained by using an essentially needed amount of photo-polymerization initiator for the photo-polymerization reaction. By the process of the present invention, the staining of the production facility of the optical compensation sheet derived from vaporization of photo-polymerization initiator can be reduced.
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Buchanan & Ingersoll & Rooney PC
FUJIFILM Corporation
Kianni K. Cyrus
LandOfFree
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