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:
May. 08, 1990
Filed:
Mar. 07, 1983
Wolfgang Ruhle, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A temperature sensor having a semiconductor body is disclosed. The semiconductor body includes a substrate of a compound semiconductor and an epitaxial layer of a mixed crystal in which different conduction band minima with different effective masses are energy-wise closely adjacent. A particular embodiment comprises the mixed crystal series gallium-aluminum-arsenic having the composition Ga.sub.1-x Al.sub.x As, in which the aluminum concentration is 0.2.ltoreq.x.ltoreq.0.43. The temperature sensor formed in this manner provides a simplified design and a wide linear temperature range. Additionally, the temperature range is extended without the need for a shunt resistance.