Display array and power control circuit
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United States of America Patent
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Jun 24, 1997
Grant Date -
N/A
app pub date -
Jan 17, 1995
filing date -
Jan 17, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An array of display elements are driven between ON and OFF positions where an element bright side is or is not displayed in the viewing direction by a magnetic field individual to each element. A Hall effect switch is located in each field and used to control a circuit in accord with the field polarity. The circuit may be used to provide lights which augment the appearance of an element in a viewing direction. A power control circuit using a phase control and a clipper is used to power the lights and the Hall element.
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