Display device and driving circuit for capacitance load thereof
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United States of America Patent
Stats
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May 17, 2011
Grant Date -
Jun 14, 2007
app pub date -
Dec 13, 2006
filing date -
Dec 13, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A driving circuit and display device reducing waste of a bias current of an amplifier and conserving power. The driving circuit includes a driving signal supply mechanism, an amplifier mechanism and a control mechanism. The supply mechanism supplies a driving signal having a target voltage represented during periodic update. The amplifier mechanism has an amplifier part, a current-adjustable constant current source and a switch part. The driving signal is input to the amplifier part, which generates an output to a capacitance load according to the driving signal. The current source supplies and regulates a passing rate of the bias current to the amplifier part. The switch part performs ON/OFF control to the current output to the current source. The control mechanism detects a difference between the previous and present values of the target voltage to change a current value of the current source.
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