GAMMA REFERENCE VOLTAGE GENERATING CIRCUIT, ARRAY SUBSTRATE AND DISPLAY DEVICE
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United States of America Patent
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Issued Date -
Dec 3, 2015
app pub date -
Dec 17, 2014
filing date -
Jun 3, 2014
priority date (Note) -
Abandoned
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Abstract
The present invention discloses a gamma reference voltage generating circuit, an array substrate and a display device. The gamma reference voltage generating circuit comprises a voltage collection module, an original voltage generating module, an operation module, and an output voltage generating module, the operation module performs an operational processing on a feedback signal output from the voltage collecting module and an original gamma reference voltage signal output from the original voltage generating module to generate a new gamma reference voltage, which is then output by the output voltage generating module. The above circuit achieves the object that the gamma reference voltage is automatically adjusted with fluctuation of the common electrode voltage, keeps a balance of the voltage difference between the data voltage and the common electrode voltage when outputting signals via data lines, and avoids the greenish phenomenon caused by fluctuation of the voltage difference.
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