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:
Apr. 06, 1982
Filed:
Oct. 17, 1979
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
An integrated semiconductor circuit arrangement is provided which comprises a substrate of semiconductor material of one conductivity type, an epitaxial layer of the opposite conductivity type formed on one major surface of the substrate, the epitaxial layer having function elements such as transistors, diodes, resistances, and so forth, formed therein. A least some of these function elements are located in insulated regions provided for them which in the boundary area between the substrate and the epitaxial layer are bounded by a pn junction and which at right angles to this boundary area are bounded by oxide walls which extend through the epitaxial layer to the substrate. The oxide walls are surrounded by a resistor region of the said one conductivity type which extends through the epitaxial layer to the substrate.