Semiconductor device manufacturing: process – Formation of electrically isolated lateral semiconductive... – Grooved and refilled with deposited dielectric material
Reexamination Certificate
2006-06-28
2008-12-23
Prenty, Mark (Department: 2822)
Semiconductor device manufacturing: process
Formation of electrically isolated lateral semiconductive...
Grooved and refilled with deposited dielectric material
C438S434000
Reexamination Certificate
active
07468307
ABSTRACT:
A semiconductor structure includes a semiconductor layer stack includes a semiconductor substrate of a first conductivity type, a heavily-doped buried layer of a second conductivity type, and a monocrystalline semiconductor layer of a third conductivity type formed on top of the semiconductor layer and the buried layer, a contact to the buried layer, the contact formed in a contact hole, and a lateral insulation of different portions of the semiconductor structure, the insulation formed in an isolation trench. A contact to the semiconductor substrate may be formed within the isolation trench.
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German Office Action for German Application No. 10 2006 029 682.6 mailed on Mar. 27, 2008 (9 pages).
De Pestel, F. et al., “Deep Trench Isolation for a 50V 0.35 um Based Smart Power Technology,” IEEE, pp. 191-194 (2003).
Bonart Dietrich
Gross Thomas
Gruber Hermann
Hartner Walter
Meiser Andreas
Dicke Billig & Czaja, PLLC
Infineon - Technologies AG
Prenty Mark
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