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United States of America Patent
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Issued Date -
Apr 5, 2012
app pub date -
Sep 28, 2011
filing date -
Sep 30, 2010
priority date (Note) -
Abandoned
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Abstract
Potential fluctuation of a common voltage is canceled, and greenish coloring of a screen displayed on a liquid crystal display panel is reduced to provide a high-quality image. A liquid crystal display device includes a liquid crystal display panel having plural pixels in which each of the pixels includes a pixel electrode and a counter electrode. The liquid crystal display device includes a detector circuit that detects a specific image pattern that induces a potential fluctuation of a common voltage applied to the counter electrode, and a VCOM generator circuit that generates the common voltage to be applied to the counter electrode. The VCOM generator circuit applies the common voltage in which an inverse compensation voltage that compensates the potential fluctuation is superimposed on a reference common voltage to the counter electrode on the basis of a detection result of the detector circuit.
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