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. 31, 2009
Filed:
Jul. 26, 2005
Daniel A. Lawlyes, Kokomo, IN (US);
David A. Laudick, Kokomo, IN (US);
Daniel A. Lawlyes, Kokomo, IN (US);
David A. Laudick, Kokomo, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A method of making an electronic assembly comprising an electronic component that is attached to a circuit board by protruding solder bumps of the electronic component places the electronic component on a surface of the circuit board so that solder bumps on the bottom of the electronic component engage contact pads on the top of the circuit board. The solder bumps are then reflowed to attach the electronic component to the circuit board after which the electronic component is underfilled by providing a mold die having a mold cavity, a gate leading into the mold cavity and a vent leading out of the mold cavity. The mold die is placed over the electronic component and onto the surface of the circuit board so that the electronic component is inside the mold cavity and the mold cavity is sealed. An encapsulating material, preferably an epoxy material, is transferred or injected into the mold cavity to fill space between the respective surfaces of the electronic component and the circuit board and then cured to encapsulate the solder bumps that have been reflowed. An optional integrated heat sink for the electronic component may be used when practicing the method of the invention to make an electronic assembly.