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:
Oct. 08, 1991
Filed:
Oct. 19, 1990
Hiroaki Anmo, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor device with a capacitive element of an MIS structure comprising an electrode lead segment and an MIS segment in which an electrode is formed through a dielectric layer on an impurity region over to an aperture in a field insulator film. A high-concentration impurity region which connects the impurity region of the MIS segment to the electrode lead region of the electrode lead segment is formed only in the junction between the impurity region and the electrode lead region. The parasitic capacitance between the capacitive element and the semiconductor substrate is reduced without increasing the parasitic resistance so as to consequently achieve high precision in forming the capacitive element.