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:
Sep. 27, 1983
Filed:
Nov. 27, 1981
Jacques R St Louis, Ottawa, CA;
Northern Telecom Limited, Montreal, CA;
Abstract
Mounting silicon devices on a ceramic substrate creates considerable problems when the device has a geometry, such as being very long relative to its width, due to flatness and thermal mismatches. In the present invention a thin silicon substrate is interposed between base and device, the substrate of a geometry which reduces flatness and thermal mismatching to acceptable levels. Also the use of a silicon substrate enables well developed and easily provided silicon technology to form conductor patterns for interconnecting between device and base, avoiding problems of producing such conductor patterns on the ceramic base. The invention is particularly useful for the mounting of linear devices, such as linear imagers, which can have a length to width ratio in excess of 20:1.