Method and structures for indexing dice

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United States of America Patent

PATENT NO 7491620
APP PUB NO 20080153250A1
SERIAL NO

12070583

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Abstract

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A method of indexing a plurality of dice obtained from a material wafer comprising a plurality of stacked material layers, each die being obtained in a respective die position in the wafer, the method including providing a visible index on each die indicative of the respective die position, wherein providing the visible index on each die includes: forming in a first material layer of the die a reference structure adapted to defining a mapping of the wafer; and forming in a second material layer of the die a marker associated with the reference structure, a position of the marker with respect to the reference structure being adapted to provide an indication of the die position in the wafer.

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Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS S R LVIA C OLIVETTI 2 AGRATE BRIANZA (MB) 20864

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brambilla, Daniele Alfredo Sovico , IT 6 30
Valtolina, Marco Natale Agrate Brianza , IT 3 18

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