Light valve containing ultrafine particles
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United States of America Patent
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Jul 22, 1997
Issued Date -
N/A
app pub date -
Jan 13, 1995
filing date -
Dec 8, 1994
priority date (Note) -
Expired
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Abstract
An electro-optical device, such as a light valve, has a cell formed of opposed cell walls, a light-modulating unit comprising a suspension containing anisometric particles suspended in a liquid suspending medium between the cell walls, and opposed electrodes operatively associated with the cell walls for applying an electrical field across the suspension, the anisometrically shaped particles having an average particle size of about 0.1 microns or less.
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