Methods of manufacturing board having throughholes filled...

Details Methods of manufacturing board having throughholes filled... Methods of manufacturing board having throughholes filled...

2005-09-06

2005-09-06

Arbes, Carl J. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S846000, C029S853000, C029S847000, C029S848000, C029S849000, C029S850000, C029S851000, C174S255000, C174S261000, C428S209000

Reexamination Certificate

active

06938336

ABSTRACT:
A resin filled board is manufactured by forming roughened surfaces on a conductive layer in a throughhole before it is filled with a resin, forming smooth surfaces on conductive layers on the top and bottom of the board, printing the resin using a mask having an opening at a position corresponding to the throughhole to selectively fill the resin in the throughhole, and curing the resin. In this way, the surface of the conductive layer around the throughhole is smoothed, so that hardly any of the resin remains on the surfaces near the throughhole when the surfaces of the board is mechanically polished after the resin is cured. Also, the filling resin will not fall down into the throughhole.

REFERENCES:
patent: 6242079 (2001-06-01), Mikado et al.
patent: 6376049 (2002-04-01), Asai et al.
patent: 6512186 (2003-01-01), Nishiwaki et al.
patent: 6532651 (2003-03-01), Andou et al.

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