Patent ID: 9711465
Date: 2017-07-18
CPC Classifications: H01L,H01Q

Claim:
1. An integrated fan-out package comprising: a top-side redistribution wiring structure; a back-side redistribution wiring layer having a ground plane therein; a molding compound layer having a thickness and provided between the back-side redistribution wiring layer and the top-side redistribution wiring structure; a radio frequency (RF) integrated circuit (IC) die at least laterally embedded within the molding compound layer; one or more integrated patch antenna structure in the top-side redistribution wiring structure, wherein the one or more integrated patch antenna structure is coupled to the RF IC die; an antenna cavity within the molding compound layer under each of the one or more integrated patch antenna structure, wherein each of the antenna cavity is defined by a cavity sidewall structure and the ground plane, wherein the cavity sidewall structure is provided within the molding compound layer and in electrical contact with the ground plane and extending from the ground plane through the thickness of the molding compound layer.