Method of forming an insulating layer on a printed circuit board

Details Method of forming an insulating layer on a printed circuit board Method of forming an insulating layer on a printed circuit board

1990-10-31

1993-08-10

Lusigan, Michael

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427 96, 428901, 430315, C23C 2600

Patent

active

052347451

ABSTRACT:
A method of forming an insulating layer on a printed circuit board for use in a manufacture of the printed circuit board is disclosed. The method comprises steps of providing a base material plate for the printed circuit board, forming a circuit pattern on the base material plate, providing an insulating layer on the circuit pattern, providing a conducting circuit on the insulating layer, and forming the insulating layer by a dry film.

REFERENCES:
patent: 4045636 (1977-08-01), Yoder
patent: 4336320 (1982-06-01), Cummings
patent: 4737446 (1988-04-01), Cohen
patent: 4983252 (1991-01-01), Masui
patent: 5045975 (1991-09-01), Cray
patent: 5055164 (1991-10-01), Hawkins
patent: 5078831 (1992-01-01), Miyazaki

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