REGULATING CIRCUIT
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United States of America Patent
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Issued Date -
Jun 2, 2011
app pub date -
Nov 24, 2010
filing date -
Dec 1, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A regulating circuit for driving a display screen pixel having a light-emitting diode includes at least one operational amplifier (11) having a first input (12), a second input (13), and an output (16). A measuring signal (U.sub.mess) dependent on the flow of current through a driver transistor of the light-emitting diode is applicable to the first input (12) and a network (15, 15') consisting of active and/or passive components and at least one capacitor (C) is connected to the second input (13). The network (15, 15') has a plurality of inputs (U.sub.1-U.sub.n). A digital reference input signal is applicable to the plurality of inputs (U.sub.1-U.sub.n), and the output (16) of the operational amplifier (11) is connected to a data line of the pixel.
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