Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-10-04
1999-06-01
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345214, G09G 322
Patent
active
059092009
ABSTRACT:
A current controlled field emission display includes a current control circuit coupled to respective emitters to control current flow through the emitters. The control circuit includes a limiting resistor to limit the current flow to the emitters. To compensate for temperature or other variations in the resistance of the limiting resistor, the control circuit also includes a compensating resistor that produces an offsetting change in a driving voltage within the control circuit. As the resistance of the limiting resistance drops, which would allow the current through the emitter to increase, the compensating resistor produces an offsetting voltage drop that increases the voltage across the limiting resistance to maintain the current through the limiting resistance constant. The offsetting current reduction thus reduces the overall effect of temperature on current flowing through the emitter set.
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Micro)n Technology, Inc.
Nguyen Thu
Saras Steven J.
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