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:
Sep. 25, 2018
Filed:
Feb. 10, 2016
Freescale Semiconductor, Inc., Austin, TX (US);
Zhiwei Gong, Tempe, AZ (US);
Wei Gao, Tianjin, CN;
NXP USA, INC., Austin, TX (US);
Abstract
A package substrate having an opening and through-substrate interconnect structures is attached to a temporary carrier such as an adhesive film. The active surface of an IC die is placed in contact with the carrier substrate within the opening, to temporarily attach the die to the carrier substrate. Another die is attached to the side of the first die furthest from the carrier substrate. In one embodiment, the dies are attached to each other using an epoxy so that their respective non-active surfaces face each other. Bond wires are connected between interconnects at the active surface of the second die and the substrate. The wires are then encapsulated. After removal of the carrier substrate, a build-up interconnect structure is formed that includes external interconnects of the package substrate, such as solder balls of a ball grid array package.