Semiconductor device manufacturing: process – Chemical etching – Vapor phase etching
Reexamination Certificate
2006-05-30
2006-05-30
Vinh, Lan (Department: 1765)
Semiconductor device manufacturing: process
Chemical etching
Vapor phase etching
24, 24
Reexamination Certificate
active
07053001
ABSTRACT:
A method of selective etching a metal oxide layer for fabrication of a ferroelectric device includes preparing a silicon substrate, including forming an oxide layer thereon; depositing a layer of metal or metal oxide thin film on the substrate; patterning and selectively etching the metal or metal oxide thin film without substantially over etching into the underlying oxide layer; depositing a layer of ferroelectric material; depositing a top electrode on the ferroelectric material; and completing the ferroelectric device.
REFERENCES:
patent: 6407422 (2002-06-01), Asano et al.
patent: 6613679 (2003-09-01), Chino
Hsu Sheng Teng
Li Tingkai
Ulrich Bruce Dale
Robert D. Varitz, P.C.
Sharp Laboratories of America Inc.
Vinh Lan
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