STORAGE NODE LIGHT SHIELD FOR PIXEL OF IMAGE SENSOR
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Mar 7, 2024
app pub date -
Jan 4, 2023
filing date -
Sep 6, 2022
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Abstract
A pixel of an image sensor includes: a semiconductor material substrate; a photosensitive region formed in the substrate, the photosensitive region generating photo-induced electrical charge in response to illumination with light; a storage node formed in the substrate proximate to the photosensitive region, the storage node selectively receiving and storing photo-induced electrical charge generated by the photosensitive region; and a shield formed over the storage node which inhibits light from reaching the storage node, the shield including an extension which protrudes into the substrate and surrounds an outer periphery of the storage node.
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