Method of making optical compensation film using polymer...

Details Method of making optical compensation film using polymer... Method of making optical compensation film using polymer...

2006-08-15

2006-08-15

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001100, C252S299010, C252S582000, C349S086000, C349S088000, C349S089000, C349S117000, C349S128000

Reexamination Certificate

active

07090901

ABSTRACT:
The present invention provides a method of preparation of optical compensation films using a polymer stabilization technique so as to enable continuous roll-to-roll production. The films can be applied for reflective liquid crystal displays. They are prepared by photo-polymerizing a mixture comprising a reactive monomer (or mixture of monomers), a small amount of photoinitiator and liquid crystal. The concentration of the reactive monomer (mesogenic or non-mesogenic) in the reactive mixtures can be as low as 5% or as high as 99% by weight. The materials that can function as the optical compensation films in the present invention include, but are not limited to, mixtures of liquid crystal and reactive mesogenic monomers (rod-like, bent-shaped, and disc-like mesogenic monomers) containing polymerizable groups (monofunctionaly or multifunctional) selected from acrylate, methacrylate, vinyls, butadiene, vinyl ethers, or epoxide.

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