Electronic device
AssigneeFujitsu Limited
InventorsKazuhiko Kobayashi, Hideharu Sakoda, Hirohisa Matsuki, Osamu Igawa, Mitsutaka Sato, Koju Aoki, Hiroyuki Sakima
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Abstract
The present invention realizes a miniaturized electronic device that is still capable of maintaining its high reliability even when miniaturized. To this end, the electronic device has an electronic circuit, comprising: a substrate with a circuit formation surface on which one part of the electronic circuit is formed; a polyimide layer that is formed on the circuit formation surface; and a spiral inductor constituting another part of the electronic circuit, which is formed into a pattern on the polyimide layer.
Claims10
An electronic device having an electronic circuit and an external connection terminal that is connected to said electronic circuit, said electronic device comprising:
- a substrate having a circuit formation surface on which one portion of said electronic circuit corresponding to a high frequency active circuit is formed;
- an isolating layer formed on said substrate;
- a first insulating layer having a thickness of at least 9 μm formed on said circuit formation surface and said isolating layer;
- internal wiring that comprises a first wiring portion for connecting said electronic circuit to said external connection terminal and a second wiring portion formed into a pattern in said first insulating layer and on said first insulating layer at a position where said isolating layer is formed;
- and
- a second insulating layer formed on said internal wiring.
Dependencies are inferred from the claim text.