Light-emitting element driving circuit having a potential control unit and an auxiliary potential control unit
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United States of America Patent
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Nov 11, 2014
Issued Date -
N/A
app pub date -
Oct 10, 2012
filing date -
Nov 10, 2011
priority date (Note) -
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Abstract
A light-emitting element driving circuit comprising, a light-emitting element, a driving unit which has a control terminal and is configured to drive the light-emitting element according to a potential of the control terminal, a node connected to the control terminal, a monitor configured to monitor an emitted light amount of the light-emitting element, a potential control unit configured to control a potential of the node so that the emitted light amount of the light-emitting element approaches a target value, and an auxiliary potential control unit configured to assist potential control of the node by the potential control unit when a difference between the emitted light amount of the light-emitting element detected by the monitor and the target value is larger than a reference amount.
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