Stacked filter and image sensor containing the same
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United States of America Patent
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May 30, 2017
Grant Date -
Apr 7, 2016
app pub date -
Oct 6, 2014
filing date -
Oct 6, 2014
priority date (Note) -
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Abstract
A stacked filter for an image sensor including an infrared (IR) pixel is provided. The stacked filter includes a first filter layer disposed at the IR pixel. The first filter layer allows light with wavelengths of a first band to be transmitted through. The stacked filter further includes a second filter layer stacked with the first filter layer. The second filter layer allows light with wavelengths of a second band to be transmitted through. The first band partially overlaps the second band at wavelengths of a third band. The third band is narrower than the first band and the second band. The stacked filter allows light with the wavelengths of the third band to be transmitted through. Furthermore, an image sensor containing a stacked filter is also provided.
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