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. 27, 1990
Filed:
Dec. 12, 1986
Erich Kasper, Pfaffenhofen, DE;
Klaus Worner, Leingarten, DE;
Licentia Patent-Verwaltungs GmbH, Frankfurt am Main, DE;
Telefunken electronic GmbH, Heilbronn, DE;
Abstract
A structured semiconductor body based on a Si substrate and having monocrystalline semiconductor regions and barrier regions which contain polycrystalline silicon which have preferably been produced in an Si-MBE process. The barrier regions are provided to delimit the monocrystalline Si semiconductor structures to prevent undesired current flow, for example between twso monocrystalline devices of an integrated circuit. The polycrystalline silicon of the barrier regions has a substantially lower electrical conductivity than the monocrystalline regions, and consequently it is possible to spatially selectively dope portions the barrier region so as to provide regions which electrically contact a monocrystalline silicon region. In a preferred embodiment a polycrystalline silicon region within the barrier region is doped so that it forms a pn-junction with the adjacent monocrystalline semiconductor region and can be used, for example, as an emitter zone of a bipolar device.