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:
Aug. 11, 1998
Filed:
Mar. 11, 1997
Applicant:
Inventor:
Colin Alan Warwick, Holmdel, NJ (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257510 ; 257620 ;
Abstract
The specification describes techniques for isolating noisy subcircuits in integrated analog/digital devices. The isolating means are trenches formed in the backside of the chip, and extending through, or partially through, the chip substrate. The isolating trenches are configured to be discontinuous so that the structural integrity of the chip, and the wafer as the chips are processed, is preserved.