Display apparatus with digital micromirror device
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United States of America Patent
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-
Feb 19, 2002
Issued Date -
N/A
app pub date -
Jan 31, 1995
filing date -
Aug 22, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A display apparatus includes a digital micromirror device and red, green and blue lamps which illuminate it. The light from the lamps impinges on the DMD from at least two different directions. The lamps may be flash tubes which are fired at different binary levels in accordance with the rank of the bits that are being displayed on the DMD. The lamps may be fluorescent lamps which are driven steadily at predetermined levels while the rows of micromirrors are turned on in sequence and subsequently turned off in sequence. Resetting to dislodge micromirrors that have become stuck can be accomplished by emitting current pulses through the micromirrors while exposing them to a magnetic field, or by coating the actuation electrodes of the DMD with piezoelectric material which moves mechanically when pulses are applied to the micromirrors.
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Family
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Cited Art Landscape
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