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.
Patent No.:
Date of Patent:
Mar. 24, 1998
Filed:
Jan. 02, 1996
Applicant:
Inventor:
Kakutaro Suda, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257370 ; 257378 ;
Abstract
A semiconductor device with a reduced insulating capacitance between an emitter electrode and a base layer, and a manufacturing method thereof are disclosed. In the semiconductor device, at least first and second insulating layers are interposed between the emitter electrode and the base layer. Preferably, the first insulating layer, a semiconductor layer having insulation characteristics, and the second insulating layer are interposed between the emitter electrode and the base layer.