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. 16, 1976
Filed:
Jan. 21, 1975
David Latham Grundy, Saddleworth, EN;
Kenneth Lawson Hughes, Hale Barns, EN;
Ferranti Limited, Hollinwood, EN;
Abstract
A semiconductor device having a plurality of constituent components within a semiconductor body such that the device in combination with one of a plurality of different possible metallisation patterns of conductors forms a desired circuit arrangement, is provided in a semiconductor body having a epitaxial layer of one conductivity type on a substrate of the same conductivity type and suitable to be employed as a conductive plane, and is manufactured by a method which includes the diffusion step of providing simultaneously within the epitaxial layer regions of opposite conductivity type of the constituent components of the device and a network of conductive tracks, it being possible, for example, for the device to include bipolar transistors of the so-called collector-diffusion-isolation construction or isoplanar construction.