Backside illuminated imaging sensor with improved angular response
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United States of America Patent
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Mar 8, 2011
Grant Date -
May 20, 2010
app pub date -
Nov 17, 2008
filing date -
Nov 17, 2008
priority date (Note) -
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Abstract
A backside illuminated imaging pixel with improved angular response includes a semiconductor layer having a front and a back surface. The imaging pixel also includes a photodiode region formed in the semiconductor layer. The photodiode region includes a first and a second n-region. The first n-region has a centerline projecting between the front and back surfaces of the semiconductor layer. The second n-region is disposed between the first n-region and the back surface of the semiconductor layer such that the second n-region is offset from the centerline of the first n-region.
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