Method and structures for indexing dice

Details Method and structures for indexing dice Method and structures for indexing dice

2005-04-19

2008-03-25

Potter, Roy Karl (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Alignment marks

C257S758000

Reexamination Certificate

active

07348682

ABSTRACT:
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.

REFERENCES:
patent: 4409686 (1983-10-01), Harlow et al.
patent: 5294812 (1994-03-01), Asoh et al.
patent: 5760421 (1998-06-01), Takahashi et al.
patent: 6638831 (2003-10-01), Roberts et al.
patent: 6888260 (2005-05-01), Carpi et al.
patent: 2 320 612 (2002-03-01), None
patent: 0 434 141 (1991-06-01), None
patent: WO 01/39269 (2001-05-01), None
European Search Report for EP 04 10 1599 dated Sep. 7, 2004.

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