Suspended particle device light valve film

Details Suspended particle device light valve film Suspended particle device light valve film

2005-08-30

2005-08-30

Gulakowski, Randy (Department: 1712)

Compositions

Light transmission modifying compositions

Modification caused by energy other than light

C349S016000, C349S033000, C359S253000, C359S296000, C428S001200, C428S001500, C525S176000

Reexamination Certificate

active

06936193

ABSTRACT:
A film suitable for use as a light-modulating unit of a suspended particle device light valve, comprising a plurality of particles dispersed in a liquid suspending medium, distributed within an optionally crosslinked matrix polymer. The suspending medium is substantially immiscible with the matrix polymer, has a boiling point greater than about 100° C., has an electrical resistivity of at least about 0.8×106ohms per square, and has an in endex of refraction at 25° C. which differs from that of the matrix polymer by no more than about 0.002.

REFERENCES:
patent: 4247175 (1981-01-01), Saxe
patent: 4407565 (1983-10-01), Saxe
patent: 4772103 (1988-09-01), Saxe
patent: 5409734 (1995-04-01), Lee et al.
patent: 5461506 (1995-10-01), Check, III et al.
patent: 5463491 (1995-10-01), Check, III
patent: 5463492 (1995-10-01), Check, III
patent: 6114405 (2000-09-01), Zhuang et al.
patent: 6416827 (2002-07-01), Chakrapani et al.
Lambent Technologies (Norcross Division)—Product Guide (2003).

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