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:
Jun. 02, 1987
Filed:
Aug. 16, 1985
Heinrich Zeile, Hamburg, DE;
Hartmut Witt, Seevetal, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A temperature sensor in the form of a temperature-dependent semiconductor resistor operating according to the current-spreading principle includes a semiconductor body of one conductivity type of silicon, which is provided on its lower side with a conductive layer and is provided on its upper side with at least one contact zone of the one conductivity type. The upper side is coated with a silicon oxide layer or a silicon nitride layer. In order for the given resistance value to be maintained more accurately and the temperature coefficient to have only a small spread, the semiconductor body is provided at its surface adjacent the silicon oxide layer or silicon nitride layer with a surface zone of the opposite conductivity type. Thus, it is possible to limit to a minimum value or to completely compensate for the influence of charges at the silicon oxide layer or silicon nitride layer.