Semiconductor device manufacturing: process – Coating of substrate containing semiconductor region or of...
Reexamination Certificate
2006-08-01
2006-08-01
Cao, Phat X. (Department: 2814)
Semiconductor device manufacturing: process
Coating of substrate containing semiconductor region or of...
C438S711000
Reexamination Certificate
active
07084074
ABSTRACT:
Chemical vapor deposition (CVD) is enhanced by compensating for a depleted gas concentration zone in a CVD reactor. According to an example embodiment of the present invention, a chemical-vapor deposition (CVD) gas injector is adapted to supply gas to a CVD chamber in a manner that enhances the properties of deposited films. The injector has a gas inlet coupled to a gas source and supplies gas from the source to the CVD system via at least one gas outlet. The injector is adapted to deliver gas in a manner that sufficiently maintains uniform supply of the gas in a zone of the CVD system that would exhibit a depleted gas supply absent the injector. The uniform gas supply improves the CVD process in various manners, including making possible the deposition of films having uniform properties, such as reflectivity, extinction coefficient, thickness and refractive index.
REFERENCES:
patent: 5015330 (1991-05-01), Okumura et al.
patent: 5710073 (1998-01-01), Jeng et al.
patent: 6143080 (2000-11-01), Bartholomew et al.
Bhakta Jayendra D.
Branstetter Raymond
D'Elia Michael J.
Sheffield Barry
Advanced Micro Devices , Inc.
Cao Phat X.
Crawford & Maunu PLLC
Doan Theresa T.
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