Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2011-04-19
2011-04-19
Thomas, Eric (Department: 2835)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S311000
Reexamination Certificate
active
07929272
ABSTRACT:
A dielectric device having a dielectric layer and first to nth metal layers (where n is an integer of 2 or greater) in contact with the dielectric layer. At least one of the first to nth metal layers contains a base metal. Interfaces between the first to nth metal layers and the dielectric layer have respective arithmetic mean roughnesses of Ra1to Ran(nm), while an average value Ram (nm) of the arithmetic mean roughnesses of Ra1to Ran(nm) and a thickness T (nm) of the dielectric layer satisfy T/Ram ≧1.3.
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Horino Kenji
Kakei Shinichiro
Koike Kuniji
Saita Hitoshi
Oliff & Berridg,e PLC
Sinclair David M
TDK Corporation
Thomas Eric
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