Compensator with photochemically cured barrier layer and...

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

Reexamination Certificate

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C349S122000, C428S001100

Reexamination Certificate

active

07148941

ABSTRACT:
Disclosed is an optical compensator for a liquid crystal display having improved optical properties, comprising a transparent polymeric support bearing an orientation layer and a photochemically cured optically anisotropic layer, in that order, wherein a photochemically cured barrier layer is present between the orientation layer and the support, and wherein the barrier layer, as disposed on the support, exhibits an indentation modulus of less than 2 GPa. The invention further provides a compensator comprising a transparent polymeric support, an orientation layer, and a photochemically cured optically anisotropic layer, in that order, wherein a photochemically cured barrier layer is present between the orientation layer and the support, and wherein there is present a compliant layer softer than the barrier layer adjacent to the support side of the barrier layer, and further comprises a compensator containing two or more compensator layers, with or without an adjacent compliant layer and a process for making the foregoing.

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