Circuit board

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices

Reexamination Certificate

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Details

Other Related Categories

C174S255000, C174S256000, C174S257000, C174S258000, C361S770000, C361S771000, C361S772000, C361S774000

Type

Reexamination Certificate

Status

active

Patent number

07817441

Description

ABSTRACT:
Provided is a circuit board including: a circuit board body with at least one surface having a plurality of electrically connecting pads; an insulating protection layer formed on the circuit board body and formed with an opening corresponding in position to one of the electrically connecting pads, being larger than the electrically connecting pad, and not being in contact with the periphery of the electrically connecting pad; and a soldering material formed on, and confined to, the electrically connecting pad; thus allowing an electrically conductive element limited in the opening formed in the insulating protection layer to be fabricated from the soldering material by a reflow process with a view to forming a fine-pitch electrically connecting structure.

REFERENCES:
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patent: 6018197 (2000-01-01), Saiki et al.
patent: 6165885 (2000-12-01), Gaynes et al.
patent: 6443351 (2002-09-01), Huang et al.
patent: 6472608 (2002-10-01), Nakayama
patent: 6512182 (2003-01-01), Takeuchi et al.
patent: 6570251 (2003-05-01), Akram et al.
patent: 6809415 (2004-10-01), Tsukada et al.
patent: 6998293 (2006-02-01), Achari et al.
patent: 2004/0084206 (2004-05-01), Tung
patent: 2006/0087039 (2006-04-01), Cheng et al.

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