OUTPUT VOLTAGE AMPLIFIER AND DRIVING DEVICE OF LIQUID CRYSTAL DISPLAY USING THE SAME
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United States of America Patent
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Issued Date -
Sep 16, 2010
app pub date -
Oct 2, 2008
filing date -
Oct 18, 2007
priority date (Note) -
Abandoned
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Abstract
An output voltage amplifier, and a driving device of a liquid crystal display using the same are disclosed. The output voltage amplifier includes: an amplifying unit to generate first and second signals corresponding to a gray voltage input to a first input terminal and a feedback signal input to a second input terminal, and to output a first voltage by using first and second switches driven to be on or off according to the first and second signals; an output unit to apply the first and second data signals to the first and second pixels by using third and fourth switches turned on or off according to the first and second signals; and a feedback circuit unit to selectively supply one of the first voltage and the first and second data signals to the second input terminal. Heating characteristics and a slew rate can be improved.
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