Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2006-11-03
2010-11-23
Ha, Nguyen T (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S311000, C361S312000, C361S301400, C361S321100, C361S321200
Reexamination Certificate
active
07839622
ABSTRACT:
A capacitor device, an electronic circuit comprising a capacitor device, an electronic component, and a method of forming a capacitor device are described. In the capacitor device, a current-path region extends from one of two trench capacitor electrodes to a respective contact structure. The current-path region is obtainable by thinning the substrate from an original substrate thickness down to reduced substrate thickness either in a lateral substrate portion containing the capacitor region or over the complete lateral extension of the substrate before forming the first and second contact structures. The capacitor device exhibits a reduced impedance in the current-path region. This reduced impedance implies a low self-inductance and self-resistance that is caused by the current-path region. The low self-inductance provides an improved signal suppression over a broadened spectral range in a circuit configuration that employs the capacitor device as a bypass capacitor between a signal line and ground potential.
REFERENCES:
patent: 3427708 (1969-02-01), Schutze et al.
patent: 4224734 (1980-09-01), Tiefert et al.
patent: 5847951 (1998-12-01), Brown et al.
patent: 5939782 (1999-08-01), Malladi
patent: 6346743 (2002-02-01), Figueroa et al.
patent: 6818469 (2004-11-01), Mori et al.
patent: 6888716 (2005-05-01), List et al.
patent: 1227515 (2002-07-01), None
patent: 2005088699 (2005-09-01), None
Roozeboom, F; et al “High-Density, Low-Loss MOS Capacitors for Integrated RF Decoupling” Proceedings 2001. International Symposium on Microelectronics (SPIE vol. 4587) IMAPS—International Microelectronics and Packaging Society, 2001, pp. 477-483.
Goldfarb, M. E; et al “Modeling Via Hole Grounds in Microstrip” IEEE Microwave and Guided Wave Letters, vol. 1, Issue 6, Jun. 1991, pp. 135-137.
Ha Nguyen T
Hamre Schumann Mueller & Larson P.C.
IPDIA
LandOfFree
Trench capacitor device suitable for decoupling applications... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trench capacitor device suitable for decoupling applications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trench capacitor device suitable for decoupling applications... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4251467