Patent ID: 8163596

Claim:
A method comprising: forming a first chip apparatus comprising: coupling a first die and a first plurality of feed-thru pads to a first side of a first flex layer, the first die comprising a plurality of electrical pads; coupling a first plurality of slugs to the first plurality of feed-thru pads; encapsulating the first die, the first plurality of feed-thru pads, and the first plurality of slugs in a first encapsulant; removing a portion of the first encapsulant to expose the first plurality of slugs; and removing the first plurality of slugs from the first encapsulant to form a first plurality of cavities in the first encapsulant, to expose a portion of the first plurality of feed-thru pads coupled to the first side of the first flex layer, and to reduce a rigidity of the first portion of the first plurality of feed-thru pads.