The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 04, 1995

Filed:

Sep. 17, 1993
Applicant:
Inventors:

Takahiro Onai, Ome, JP;

Katsuyoshi Washio, Tokorozawa, JP;

Tohru Nakamura, San Diego, CA (US);

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257347 ; 257350 ; 257506 ; 257565 ; 257588 ;
Abstract

A transistor is formed on a bonded SOI substrate. A collector electrode is connected to the peripheral sides of the collector areas on the insulator. A first insulator of isolation is formed on the peripheral side of the collector electrode. A base electrode is connected to a base area on the first insulator of isolation. Second insulators of isolation are formed on the peripheral side of a base electrode, and emitter electrode is connected to an emitter area by the second insulators of isolation. The connections between the collector electrode and the collector areas, between the base electrode and the base area, and between the emitter electrode and the emitter area are made under the emitter electrode, so the occupation area is small.


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