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1. (WO2018044326) AN APPARATUS WITH EMBEDDED FINE LINE SPACE IN A CAVITY, AND A METHOD FOR FORMING THE SAME

Pub. No.:    WO/2018/044326    International Application No.:    PCT/US2016/050268
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Sat Sep 03 01:59:59 CEST 2016
IPC: H05K 3/46
H05K 3/34
H05K 1/18
H05K 3/18
Applicants: INTEL CORPORATION
Inventors: DARMAWIKARTA, Kristof
MAY, Robert A.
DENG, Yikang
PARK, Ji Yong
MOUSSALLEM, Maroun D.
ALUR, Amruthavalli P.
BOYAPATI, Sri Ranga Sai
MAY, Lilia
Title: AN APPARATUS WITH EMBEDDED FINE LINE SPACE IN A CAVITY, AND A METHOD FOR FORMING THE SAME
Abstract:
An apparatus is provided which comprises: a cavity made in a substrate of a printed circuit board (PCB); a plurality of solder balls embedded in the cavity; and a horizontal trace within the substrate, wherein the horizontal trace is partially directly under the plurality of solder balls and is coupled to the plurality of solder balls and another trace or via in the substrate such that a substrate region under the plurality of solder balls is independent of a stop layer under the cavity.