Polymeric dispersed liquid crystal light shutter device

Compositions – Liquid crystal compositions

Reexamination Certificate

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Details

C349S056000, C349S062000, C349S088000, C252S299630, C252S299660, C359S245000, C359S254000, C359S321000

Reexamination Certificate

active

07837897

ABSTRACT:
A polymer dispersed liquid crystal light shutter device and method for use of the same are disclosed. First and second substrates are disposed substantially parallel. A polymer binder system is interposed between the first and second substrates and a plurality of liquid crystals are dispersed in the polymer binder system. The liquid crystal shutter device is able to switch between a high light absorbing dark state and a low light absorbing transparent state, and visa versa, with a low driving voltage. The liquid crystal shutter device includes formulations of liquid crystal mixtures having nematic liquid crystals and polymer systems to provide a wide viewing angle, low driving voltage, high contrast ratio, for example.

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