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US 8,298,851 B2Granted
Method of manufacturing a solid-state imaging device with a silicide blocking layer and electronic apparatus
AssigneeSony Corporation
InventorKeiji Tatani
Life of this patent
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Abstract
A solid-state imaging device is provided. The solid-state imaging device includes a pixel section, a peripheral circuit section, a silicide blocking layer formed in the pixel section except for part or whole of an area above an isolation portion in the pixel section, and a metal-silicided transistor formed in the peripheral circuit section.
Claims3
A method of manufacturing a solid-state imaging device, comprising the steps of:
- forming a silicide blocking layer in a pixel section with a plurality of pixels, each pixel having a photoelectric conversion element and a pixel transistor, the silicide blocking layer covering each pixel, isolation portions disposed between adjacent pixels;
- selectively removing the silicide blocking layer from a part or an entire area above the isolation portions in the pixel section while the silicide blocking layer remains on the photoelectric conversion element;
- forming a metal film in the pixel section and a peripheral circuit section with the silicide blocking layer covering the photoelectric conversion element;
- forming a metal silicide layer in the peripheral circuit section by siliciding a portion of the metal film;
- and
- removing a residual of the metal film not silicided,
- wherein,
- the silicide blocking layer is configured to protect the photoelectric conversion element when the metal silicide layer is formed.
5 more elements
Dependencies are inferred from the claim text.