Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2005-11-30
2008-08-12
Nguyen, Dao H. (Department: 2818)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S315000, C257SE21620, C257SE21633, C438S303000, C438S305000
Reexamination Certificate
active
07411245
ABSTRACT:
A semiconductor device includes a spacer adjacent a gate structure. A protection layer covers oxide portions of the spacer surface such that subsequent manufacturing operations such as wet oxide etches and strips, do not produce voids in the spacers. A method for forming the semiconductor device provides forming a gate structure with adjacent spacers including an oxide liner beneath a nitride section, then forming the protection layer over the structure, and removing portions of the protection layer but leaving other portions of the protection layer intact to cover and protect underlying oxide portions of the spacer during subsequent processing such as the formation and removal of a resist protect oxide (RPO) layer. The protection layer is advantageously formed of a nitride film and an oxide film and produces a double spacer effect when partially removed such that only vertical sections remain.
REFERENCES:
patent: 5069747 (1991-12-01), Cathey et al.
patent: 6232640 (2001-05-01), Okada et al.
patent: 6346449 (2002-02-01), Chang et al.
patent: 6436792 (2002-08-01), Yamaguchi et al.
patent: 6512266 (2003-01-01), Deshpande et al.
patent: 2005/0112834 (2005-05-01), Jin et al.
Duane Morris LLP
Nguyen Dao H.
Taiwan Semiconductor Manufacturing Co. Ltd.
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