BGA semiconductor device using insulating film

Year	Description
2001	Invention patented by Noriaki Kikuchi on August 7th, 2001. Abstract: A BGA semiconductor device using an insulating film and having air purge holes situated between metal through-holes in a base film serving as a substrate Stagnant air can be purged from voids formed between the insulating film arranged on the upper face of a wiring pattern on the base film and the wiring pattern via the air purge holes before electronic elements formed with chip bonding are packaged with asealing resin.
Source: selected by the editor from original sources.

Invention: BGA semiconductor device using insulating film