Dry etch stop process for eliminating electrical shorting in...

Semiconductor device manufacturing: process – Having magnetic or ferroelectric component

Reexamination Certificate

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C438S048000, C438S059000, C257S071000, C257S298000

Reexamination Certificate

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07955870

ABSTRACT:
The present invention relates generally to semiconductor fabrication and particularly to fabricating magnetic tunnel junction devices. In particular, this invention relates to a method for using the dielectric layer in tunnel junctions as an etch stop layer to eliminate electrical shorting that can result from the patterning process.

REFERENCES:
patent: 5854116 (1998-12-01), Ohmi et al.
patent: 6815248 (2004-11-01), Leuschner et al.
patent: 2002/0038681 (2002-04-01), Nakatani et al.

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