Definitions for "Buried Via"
Keywords:  via, hole, substrate, extend, inner
See Blind Via.
A plated through hole buried within internal layers of a circuit. There is no direct access to the via.
A via that is drilled through inner layers prior to lamination. Buried vias provide interconnection for a pair of inner layers (such as layers 2 and 3 of a 4-layer printed wiring board). When the printed wiring board is laminated, the via is buried by the surface layers.