Patent ID: 9338900
Filing Date: 2016-05-10
CPC Classification: H01L

Claim Text:
1. An interposer substrate, comprising: a first insulating layer having opposing first and second surfaces; a first wiring layer formed on the first surface of the first insulating layer; a plurality of conductive pillars disposed in the first insulating layer and electrically connected with the first wiring layer; a second wiring layer formed on the second surface of the first insulating layer and electrically connected with the conductive pillars; a plurality of external connection pillars disposed on and electrically connected with the second wiring layer; and a second insulating layer formed on the second surface of the first insulating layer and the second wiring layer, surrounding a periphery of each of the external connection pillars and exposing the external connection pillars, and having at least a trench formed thereon for accommodating an electronic component.