Polymeric dispersed liquid crystal light shutter device
AssigneePolytronix, Inc.
InventorsGuomin Zhang, Menting Tim Tsai
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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.
Claims28
A polymer dispersed liquid crystal light shutter device comprising:
- first and second substrates disposed substantially parallel;
- a polymer binder system interposed between the first and second substrates;
- and
- a plurality of liquid crystals dispersed in the polymer binder system, the plurality of liquid crystals comprise a mixture product of at least one compound expressed by the general formula (I), at least one compound expressed by the general formula (II), at least one compound expressed by the general formula (III), at least one compound expressed by the general formula (IV), and at least one compound selected from the group of compounds expressed by the general formulas (V), (VI), and (VII),
- wherein R1 through R7 each respectively denote a straight-chain alkyl having 2 to 7 carbon atoms.
A liquid crystal composition for a polymer dispersed liquid crystal light shutter device, the liquid crystal composition comprising:
- a mixture product of at least one compound expressed by the general formula (I), at least one compound expressed by the general formula (II), at least one compound expressed by the general formula (III), at least one compound expressed by the general formula (IV), and at least one compound selected from the group of compounds expressed by the general formulas (V), (VI), and (VII),
- wherein R1 through R7 each respectively denote a straight-chain alkyl having 2 to 7 carbon atoms.
A polymer dispersed liquid crystal light shutter device comprising:
- first and second substrates disposed substantially parallel;
- a polymer binder system interposed between the first and second substrates;
- and
- a plurality of liquid crystals dispersed in the polymer binder system, the plurality of liquid crystals comprise a mixture product of at least one compound expressed by the general formula (I), at least one compound expressed by the general formula (II), at least one compound expressed by the general formula (III), at least one compound expressed by the general formula (IV), and at least one compound expressed by the general formula (V),
- wherein R1 through R5 each respectively denote a straight-chain alkyl having 2 to 7 carbon atoms.
A polymer dispersed liquid crystal light shutter device comprising:
- first and second substrates disposed substantially parallel;
- a polymer binder system interposed between the first and second substrates;
- and
- a plurality of liquid crystals dispersed in the polymer binder system, the plurality of liquid crystals comprise a mixture product of at least one compound expressed by the general formula (I), at least one compound expressed by the general formula (II), at least one compound expressed by the general formula (III), at least one compound expressed by the general formula (IV), and at least one compound expressed by the general formula (VI),
- wherein R1 through R4 and R6 each respectively denote a straight-chain alkyl having 2 to 7 carbon atoms.
A polymer dispersed liquid crystal light shutter device comprising:
- first and second substrates disposed substantially parallel;
- a polymer binder system interposed between the first and second substrates;
- and
- a plurality of liquid crystals dispersed in the polymer binder system, the plurality of liquid crystals comprise a mixture product of at least one compound expressed by the general formula (I), at least one compound expressed by the general formula (II), at least one compound expressed by the general formula (III), at least one compound expressed by the general formula (IV), and at least one compound expressed by the general formula (VII),
- wherein R1 through R4 and R7 each respectively denote a straight-chain alkyl having 2 to 7 carbon atoms.
Dependencies are inferred from the claim text.