Patent ID: 11862532
Assignee: QORVO US, INC.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 12:
13. An apparatus comprising:
a device region including a back-end-of-line (BEOL) portion and a front-end-of-line (FEOL) portion residing over the BEOL portion, wherein:
the BEOL portion comprises a plurality of connecting layers;
the FEOL portion comprises an active layer, a contact layer, and isolation sections;
the active layer and the isolation sections reside over the contact layer, wherein the isolation sections surround the active layer and extend vertically beyond a top surface of the active layer to define an opening within the isolation sections and over the active layer; and

the isolation sections consist of silicon dioxide;
a plurality of first bump structures formed at a bottom surface of the BEOL portion, wherein the plurality of first bump structures is electrically coupled to the FEOL portion via the plurality of connecting layers;
a first mold compound formed over the bottom surface of the BEOL portion and partially encapsulating each of the plurality of first bump structures, wherein a bottom portion of each of the plurality of first bump structures is not covered by the first mold compound;
a plurality of second bump structures, wherein each of the plurality of second bump structures is in contact with a corresponding one of the plurality of first bump structures, and protrudes from the first mold compound; and
a second mold compound residing over the active layer of the FEOL portion to fill the opening, wherein:
silicon crystal, which has no germanium content, does not exist between the second mold compound and the active layer; and
a portion of the second mold compound resides over the isolation sections.