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:
Feb. 13, 2001
Filed:
Jan. 06, 1999
Applicant:
Inventor:
John Kenneth Severn, Devon, GB;
Assignee:
Nortel Networks Limited, Montreal, CA;
Primary Examiner:
Int. Cl.
CPC ...
H01L 3/10232 ;
U.S. Cl.
CPC ...
H01L 3/10232 ;
Abstract
A rear light entry photodetector chip is secured face-down with solder on to the front face of a ceramic submount provided with a pair of electrically conductive vias. A frame-shaped mass of solder seals the chip to the submount to provide a hermetic enclosure protecting sensitive semiconductor surface areas of the photodetector chip where electric fields are liable to be present in the vicinity of a pn or metal/semiconductor junction.