Semiconductor device manufacturing: process – Chemical etching – Vapor phase etching
Reexamination Certificate
2005-06-06
2009-06-23
Norton, Nadine (Department: 1792)
Semiconductor device manufacturing: process
Chemical etching
Vapor phase etching
C216S063000, C438S618000, C438S707000, C438S717000, C438S714000, C438S958000, C430S323000, C430S329000, C156S922000, C156S922000
Reexamination Certificate
active
07550394
ABSTRACT:
A method of fabricating a semiconductor device includes a dry etching process of a silicon surface. The dry etching process is conducted by an etching gas containing at least one gas species selected from the group consisting of: HBr, HCl, Cl2, Br2and HI, wherein the dry etching process includes a first step conducted at a first temperature; and a second step conducted at a second temperature.
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Angadi Maki
Fujitsu Microelectronics Limited
Norton Nadine
Westerman, Hattori, Daniels & Adrian , LLP.
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