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:
Oct. 22, 2019
Filed:
Mar. 29, 2018
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventor:
Daniel Piper, Vancouver, WA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/544 (2006.01); H01L 23/29 (2006.01); H01L 21/56 (2006.01);
U.S. Cl.
CPC ...
H01L 23/544 (2013.01); H01L 21/56 (2013.01); H01L 23/293 (2013.01); H01L 2223/54406 (2013.01); H01L 2223/54433 (2013.01);
Abstract
An optically readable chip ID is provided to an imprintable material that is formed as a last level of an integrated circuit (IC) chip using nanoimprint lithography. The nanoimprint lithography process provides an array of indentations into the imprintable material that is typically arranged in a hexadecimal pattern. The hexadecimal pattern includes one or more optically readable characters which combine to encode chip location identification data. The chip location identification data identifies a unique location of the product chip on a wafer prior to dicing.