Stacked Photodiodes for Extended Dynamic Range and Low Light Color Discrimination

摘要

The invention provides the art with novel image sensor pixel designs comprising stacked, pinned photodiodes. The stacked pinned photodiodes provide pixels with greatly increased dynamic range. The stacked pinned photodiodes also allow improved color discrimination for low light imaging, for example utilizing pixels with no overlaying color filter array.

主权项

1. A pixel comprising
a first wafer, comprising a first pinned photodiode; and a second wafer, comprising a second pinned photodiode; wherein the first wafer is bonded to the second wafer such that the first pinned photodiode is above the second pinned photodiode.