Process for producing cover coated electronic circuits

Details Process for producing cover coated electronic circuits Process for producing cover coated electronic circuits

1977-08-31

1981-09-01

Pianalto, Bernard D.

Coating processes

Electrical product produced

Welding electrode

427 96, 427282, B05D 306

Patent

active

042872260

ABSTRACT:
A process is described for producing electronic circuits in which a cover coat is used to protect the circuit elements. The process involves a series of steps including covering the electronic circuit, often before complete fabrication with a substance which cures on exposure to ultraviolet radiation, and exposing at least a portion of the coated electronic circuit to ultraviolet radiation through a silk screen mask. The ultraviolet radiation from a mercury lamp source is concentrated on the cover coat by use of reflection optics rather than coventional lenses. The process includes a procedure for compensating for possible distortion due to use of reflection optics so as to produce the desired pattern on the electronic circuit. The primary advantage of this process lies in the efficient use of ultraviolet radiation for the cure of the cover coating, without sacrifice in the definition and accuracy of the pattern.

REFERENCES:
patent: 4020191 (1977-04-01), Nagashiro et al.
patent: 4049844 (1977-09-01), Bolon et al.

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