Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Magnetic field
Reexamination Certificate
2006-04-11
2006-04-11
Clark, Jasmine (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Responsive to non-electrical signal
Magnetic field
C257S422000, C257S531000, C257S774000, C257S775000
Reexamination Certificate
active
07026699
ABSTRACT:
In a semiconductor device having a WCSP type construction package, to increase inductance without increasing further an area conventionally occupied by a coil. A pseudo-post part27comprising a magnetic body is extended in a direction perpendicular to a main surface12aof a semiconductor chip12, on a second insulating layer21of a WCSP10. A first conductive part15aand a second conductive part15bconstructed as square frames are respectively provided so as to surround the pseudo-post part, on respective top surfaces of a second insulation layer and a third insulating layer22which are separated parallel to each other, in an extension direction of the pseudo-post part. A coil100being a substantially spiral shape conductive path is formed from, the first conductive part, the second conductive part, and a connection part26which electrically connects the one ends of the first and second conductive parts.
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Anzai Noritaka
Terui Makoto
Clark Jasmine
Oki Electric Industry Co. Ltd.
Rabin & Berdo PC
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