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. 28, 2019
Filed:
Nov. 30, 2017
Applicant:
Raytheon Company, Waltham, MA (US);
Inventors:
Andrew Cahill, Goleta, CA (US);
Sean F. Harris, Santa Barbara, CA (US);
Daniel D. Lofgreen, Santa Maria, CA (US);
Assignee:
Raytheon Company, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 48/08 (2019.01); B29C 47/00 (2006.01); B29C 47/08 (2006.01); B29C 47/14 (2006.01); H01L 27/146 (2006.01); B29C 48/30 (2019.01); B29C 48/305 (2019.01); B29C 48/25 (2019.01);
U.S. Cl.
CPC ...
B29C 48/08 (2019.02); B29C 47/0021 (2013.01); B29C 47/0822 (2013.01); B29C 47/14 (2013.01); B29C 48/2562 (2019.02); B29C 48/30 (2019.02); B29C 48/305 (2019.02); H01L 27/14625 (2013.01); H01L 27/14685 (2013.01); B29C 2947/92152 (2013.01); B29C 2947/92571 (2013.01); B29C 2947/92904 (2013.01); B29C 2948/92152 (2019.02); B29C 2948/92571 (2019.02); B29C 2948/92904 (2019.02);
Abstract
Methods and apparatus for enhancing the flatness of a die by applying adhesive to a shim having a selected flatness, rotating the shim to spread the adhesive to a layer having a uniform thickness, evacuating a chamber to create a vacuum; manipulating a die onto the adhesive layer in the chamber; and reducing a level of the vacuum to pressure the die onto the adhesive layer such that the bow in the die is reduced as the die conforms to the shim.