HIGH DYNAMIC RANGE PIXEL USING LIGHT SEPARATION

摘要

An image sensor (16) may include pixels (22) having nested sub-pixels. A pixel (22) with nested sub-pixels may include an inner sub-pixel (202) that has either an elliptical or a rectangular light collecting area. The inner sub-pixel may be formed in a substrate and may be immediately surrounded by a sub-pixel group (204) that includes one or more sub-pixels. The inner sub-pixel (202) may have a light collecting area at a surface (216) that is less sensitive than the light collecting area of the one or more outer sub-pixel groups. Microlenses (1040) may be formed over the nested sub-pixels, to direct light away from the inner sub-pixel group (202) to the outer sub-pixel groups (204) in nested sub-pixels. A color filter (1250) of a single color may be formed over the nested sub-pixels. Hybrid color filters having a single color filter region (1150) over the inner sub-pixel and a portion of the one or more outer sub-pixel groups may also be used.