Activating catalytic solution for electroless plating and method

Details Activating catalytic solution for electroless plating and method Activating catalytic solution for electroless plating and method

1998-03-13

1999-02-23

Talbot, Brian K

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427304, 427305, 427437, 427553, 427559, 205210, B05D 512

Patent

active

058741259

ABSTRACT:
There is provided a method of forming a conductive film having a predetermined pattern in hybrid ICs, high frequency dielectric filters and the like which makes it possible to safely and efficiently perform a series of the steps of preparing an activating catalytic solution for forming a photoreactive film on a base, forming the photoreactive film through the application of the activating catalytic solution, producing an activating catalyst by exposing particular regions of the photoreactive film, developing by flushing away the photoreactive film in unexposed regions, and immersing the base in an electroless plating bath without using an organic solvent and which allows the formation of a plating film having high electrical conductivity and high strength of adherence. A hydrophilic activating catalytic solution is used which is obtained by dissolving copper oxalate, a palladium salt such as palladium chloride into an alkaline solution such as ammonia. Since the activating catalytic solution itself does not include any organic solvent, the photoreactive film can be flushed away in unexposed regions using water at the developing step, which allows immediate immersion into an electroless plating bath.

REFERENCES:
patent: 3791340 (1974-02-01), Ferrara
patent: 4425378 (1984-01-01), Maher
patent: 4806159 (1989-02-01), De Keyser et al.
patent: 5153023 (1992-10-01), Orlowski et al.
patent: 5746809 (1998-05-01), Kanoh et al.

Affiliated with

Also associated with

Rating

Activating catalytic solution for electroless plating and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Activating catalytic solution for electroless plating and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Activating catalytic solution for electroless plating and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-304504