UNIT PIXEL IMPROVING IMAGE SENSITIVITY AND DYNAMIC RANGE
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United States of America Patent
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Issued Date -
Aug 12, 2010
app pub date -
Aug 4, 2008
filing date -
Aug 9, 2007
priority date (Note) -
Abandoned
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Abstract
Provided are a unit pixel for improving sensitivity in low illumination conditions and a method of manufacturing the unit pixel. The unit pixel includes: a photodiode generating image charges corresponding to an image signal; a transfer transistor transferring the image charges to a floating diffusion area; and a reset transistor having a terminal connected to the floating diffusion area and the other terminal applied with a power supply, wherein concentration of impurity ions implanted into the floating diffusion area is lower than concentration of impurity ions implanted into a diffusion area of the reset transistor applied with the power supply.
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