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US 8,427,563 B2Granted
Image sensor with multiple types of color filters
AssigneeSamsung Electronics Co., Ltd.
InventorsGi-Bum Kim, Yun-Ki Lee, Duck-Hyung Lee
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Abstract
An image sensor includes a plurality of photoelectric conversion devices formed in a substrate and first and second color filters. The first color filter is formed over a first photoelectric conversion device and comprised of an organic material. The second color filter is formed over a second photoelectric conversion device and comprised of a plurality of inorganic layers. With such different types of color filters, spectral characteristic of the image sensor are enhanced.
Claims17
An image sensor comprising:
- a plurality of photoelectric conversion devices formed in a substrate;
- a first color filter formed over a first photoelectric conversion device and comprised of an organic material;
- and
- a second color filter formed over a second photoelectric conversion device and comprised of a plurality of inorganic layers,
- wherein the second color filter includes a lowest inorganic layer disposed closest to the substrate and includes a highest inorganic layer disposed furthest from the substrate, and wherein the lowest and highest inorganic layers are comprised of a same first inorganic material, and wherein the second color filter includes another inorganic layer comprised of a second inorganic material that is different from the first inorganic material,
- and wherein the second color filter does not include any other inorganic layer disposed above the highest inorganic layer further away from the substrate.
3 more elements
Dependencies are inferred from the claim text.