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:
May. 17, 1977
Filed:
Aug. 13, 1975
Sony Corporation, Tokyo, JA;
Abstract
A semiconductor device is disclosed which has a first semiconductor layer of one conductivity type and low impurity concentration, a second semiconductor region of the opposite conductivity type forming a PN junction with the first semiconductor layer, a third semiconductor region of the first mentioned conductivity type formed in the first semiconductor layer which surrounds the PN junction and forms an LH junction with the first semiconductor layer, a passivating layer covering at least the PN and LH junctions, and a conductive layer extending on the passivating layer covering at least the inner periphery of the third region and connected to the first semiconductor layer through an electric barrier layer.