Manufacture of printed circuit boards

Details Manufacture of printed circuit boards Manufacture of printed circuit boards

1981-01-14

1983-09-13

Crosby, Gene

Metal working

Method of mechanical manufacture

Electrical device making

174 685, 228104, 228180A, A05K 336

Patent

active

044034105

ABSTRACT:
A process for the manufacture of a printed circuit board is disclosed in which, during the process, conductive tracks 6 are tested for defects 8 relating to their conductivity and any detected defect 8 is repaired by securing a conductive bridge-piece 9 across the defect 8 by a reflow soldering operation. The repair is encapsulated with a protective layer 16 and the manufacturing process, which includes the further application of heat to the circuit board, is continued.

REFERENCES:
patent: 3795047 (1974-03-01), Abolafia et al.
patent: 4056773 (1977-11-01), Sullivan
patent: 4187339 (1980-02-01), Cayrol
patent: 4191789 (1980-03-01), Brown et al.
patent: 4211603 (1980-07-01), Reed
Hughes Industrial Products Div., pp. 1-24, May 1978, (Literature on Hughes Prod. Equipment).
IBM Tech. Discl. Bull., vol. 8, No. 11, Apr. 1966, p. 1469, Article by Mutnick.
IBM Tech. Discl. Bull., vol. 11, No. 8, Jan. 1969, p. 962, Article by Hermann.

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