Method of varying wavelengths of liquid crystals

Details Method of varying wavelengths of liquid crystals Method of varying wavelengths of liquid crystals

2004-10-29

2008-08-26

Wu, Shean C (Department: 1795)

Compositions

Liquid crystal compositions

Cholesteric liquid crystal composition containing a sterol...

Reexamination Certificate

active

07416684

ABSTRACT:
The present invention relates to a method of generating a second peak wavelength of reflected light from a cholesteric liquid crystal having a first peak wavelength of reflected light comprising by exposing or conditioning the cholesteric liquid crystal to a high temperature or a high humidity. The invention also relates to an electrically modulated imaging layer and a display containing a liquid crystal material that has conditioned and unconditioned forms, wherein the unconditioned form of liquid crystal material reflects a first wavelength of light and wherein the conditioned form of liquid crystal material reflects a second wavelength of light.

REFERENCES:
patent: 5668614 (1997-09-01), Chien et al.
patent: 6552756 (2003-04-01), Kotani et al.

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