Compositions – Liquid crystal compositions
Reexamination Certificate
2009-04-27
2010-11-23
Wu, Shean C (Department: 1795)
Compositions
Liquid crystal compositions
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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Tsai Menting Tim
Zhang Guomin
Griggs Scott T.
Griggs Bergen LLP
Polytronix, Inc.
Wu Shean C
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