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. 22, 1990
Filed:
Dec. 05, 1988
Teruyoshi Mihara, Yokosuka, JP;
Tsutomu Matsushita, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A single-chip integrated semiconductor device, in which a P-type isolation layer, to which the ground voltage is applied, is grown on a semiconductor substrate and a power voltage is applied to the substrate, in which a vertical MOSFET has a drain region of a first N-type well region formed in the P-type isolation layer so as to reach the semiconductor substrate therethrough, and is used in an output device for a load, in which a P-channel MOSFET is provided in the N-type well region formed in the P-type isolation layer, a constant voltage lower than the power voltage being applied to the N-type well region, and an N-channel MOSFET is formed in the P-type isolation layer, and in which the P-channel and N-channel MOSFETs constitute a CMOS circuit constructing a peripheral circuit for the vertical MOSFET.