Patent ID: 11916007
Assignee: INFINEON TECHNOLOGIES AG
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of forming an electrical device, the method comprising:
attaching a first portion of a flexible circuit to a first substrate, wherein the first substrate comprises an antenna in a first metal layer of the first substrate, wherein the first portion of the flexible circuit has an opening, wherein after the attaching, the antenna is exposed by the opening, wherein a second portion of the flexible circuit extends beyond lateral extents of the first substrate after the attaching, the second portion of the flexible circuit having an electrical connector at a distal end; and
after the attaching, bonding conductive pillars of a radio frequency integrated circuit (RFIC) to conductive features of the first substrate disposed at a first surface of the first substrate, wherein after the bonding, the RFIC is electrically coupled to the first substrate and the flexible circuit, wherein the bonding comprises:
forming openings in the first substrate to expose the conductive features of the first substrate; and
bonding the conductive pillars of the RFIC with the conductive features of the first substrate.