Color sensitive device with temperature compensation and variable gain and display system using the same
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United States of America Patent
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Issued Date -
Oct 9, 2008
app pub date -
Apr 3, 2007
filing date -
Apr 3, 2007
priority date (Note) -
Abandoned
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Abstract
A color sensitive device with temperature compensation and variable gain is disclosed. The color sensitive device exposed by RGB light can generate red-light, green-light and blue-light detection currents corresponding to the illumination of RGB light via a P-N interface of RGB photodiodes. The red-light, green-light and blue-light detection currents are transformed into voltage signals, which can be magnified via a variable resistor external to the color sensitive device. In addition, the color sensitive device includes a temperature compensation circuit for adjusting the non-ideal characteristics of photodiodes, so that a color display system using the color sensitive device will has excellent white balance after receiving the RGB voltage signals.
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