Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device
Patent
1994-08-04
1996-02-27
Duda, Kathleen
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making electrical device
430311, 430315, 430318, 430945, G03F 726
Patent
active
054947812
ABSTRACT:
A method for manufacturing a printed circuit board is to form on a top surface of an insulating substrate a layer of such plating ground as a metal film, to irradiate such electromagetic wave as a laser to a boundary edge zone of non-circuit parts with respect to circuit-printing parts on the insulating substrate in correspondence to a pattern of the non-circuit parts to remove the plating ground layer at the part irradiate by the electromagnetic wave with the plating ground layer at the non-irradiated part left as formed, and thereafter to form a plating on the surface of the plating ground layer at the non-irradiated parts, whereby it is enabled to allow the laser irradiation to be carried out only with respect to the boundary edge zone of the non-circuit parts, without irradiating all over the non-circuit parts.
REFERENCES:
patent: 5338645 (1994-08-01), Henderson
Kamada Kazuo
Nakamura Yoshimitsu
Nakashima Kunzi
Ohtani Ryuji
Okamoto Takeshi
Duda Kathleen
Matsushita Electric & Works Ltd.
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