Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2006-08-08
2006-08-08
Estrada, Michelle (Department: 2823)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C438S669000, C438S687000, C438S688000, C257SE23134, C257SE21295
Reexamination Certificate
active
07087520
ABSTRACT:
A semiconductor device includes a semiconductor substrate and metal wiring formed by alternately depositing aluminum layers and copper layers on the semiconductor substrate so that a top layer of the metal wiring is an aluminum layer. The metal wiring is fabricated by alternately depositing an aluminum layer and a copper layer on a semiconductor substrate a predetermined number of times to form a metal wiring layer having an aluminum top layer. A photoresist film pattern is formed on the metal wiring layer and metal wiring is formed by performing an etching process on the metal wiring layer using the photoresist film pattern as a mask.
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Dongbu Electronics Co. Ltd.
Estrada Michelle
Fortney Andrew D.
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