Patent ID: 11948838
Assignee: QORVO US, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 22:
23. The apparatus of claim 2 wherein:
the plurality of first protrusions includes a plurality of first bias pillar bases and a plurality of first ground pillar bases, the at least one first via hole includes a plurality of first bias via holes, and the bottom surface of the first substrate base includes a plurality of first isolation areas;
each of the plurality of first bias via holes is located at a center of a corresponding first bias pillar base, and extends vertically through the corresponding first bias pillar base and the first substrate base;
each of the plurality of first isolation areas surrounds a corresponding first bias pillar base;
the first metal layer fully covers exposed surfaces of each of the plurality of first bias pillar bases, fully covers inner surfaces of each of the plurality of first bias via holes, fully covers exposed surfaces of each of the plurality of first ground pillar bases, and fully covers exposed portions of the bottom surface of the first substrate base except for the plurality of first isolation areas;
the plurality of second protrusions includes a plurality of second bias pillar bases and a plurality of second ground pillar bases, the at least one second via hole includes a plurality of second bias via holes, and the bottom surface of the second substrate base includes a plurality of second isolation areas;
each of the plurality of second bias via holes is located at a center of a corresponding second bias pillar base, and extends vertically through the corresponding second bias pillar base and the second substrate base;
each of the plurality of second isolation areas surrounds a corresponding second bias pillar base; and
the second metal layer fully covers exposed surfaces of each of the plurality of second bias pillar bases, fully covers inner surfaces of each of the plurality of second bias via holes, fully covers exposed surfaces of each of the plurality of second ground pillar bases, and fully covers exposed portions of the bottom surface of the second substrate base except for the plurality of second isolation areas.