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:
Mar. 21, 2017
Filed:
Sep. 29, 2014
Invensas Corporation, San Jose, CA (US);
Charles G. Woychik, San Jose, CA (US);
Se Young Yang, San Jose, CA (US);
Pezhman Monadgemi, Santa Clara, CA (US);
Terrence Caskey, San Diego, CA (US);
Cyprian Emeka Uzoh, San Jose, CA (US);
Invensas Corporation, San Jose, CA (US);
Abstract
A method of attaching a microelectronic element to a substrate can include aligning the substrate with a microelectronic element, the microelectronic element having a plurality of spaced-apart electrically conductive bumps each including a bond metal, and reflowing the bumps. The bumps can be exposed at a front surface of the microelectronic element. The substrate can have a plurality of spaced-apart recesses extending from a first surface thereof. The recesses can each have at least a portion of one or more inner surfaces that are non-wettable by the bond metal of which the bumps are formed. The reflowing of the bumps can be performed so that at least some of the bond metal of each bump liquefies and flows at least partially into one of the recesses and solidifies therein such that the reflowed bond material in at least some of the recesses mechanically engages the substrate.