Tuning fork-type quartz crystal vibrator and method of forming t

Details Tuning fork-type quartz crystal vibrator and method of forming t Tuning fork-type quartz crystal vibrator and method of forming t

1977-12-27

1981-02-24

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

427100, 427272, 427282, B05D 306

Patent

active

042528399

ABSTRACT:
A metal electrode film is formed by evaporation on a tuning fork-type quartz crystal vibrator by means of a thin flat mask which has a portion of reduced thickness so that the metallic evaporant is deposited beneath the thinner portion of the mask. In forming electrodes on a tuning fork-type quartz crystal vibrator having X, Y and Z surfaces, a mask has a portion which is positioned in the X-plane between the evaporative deposition source and the inner end of the slit between the tines of vibrator so that the metallic film is prevented from being deposited on portions of the X and Y surfaces of the vibrator adjacent to the inner end of the slit.

REFERENCES:
patent: 3548494 (1970-12-01), Haring
patent: 3864161 (1975-02-01), Thompson
patent: 3914836 (1975-10-01), Hafner et al.
patent: 4049857 (1977-09-01), Hammer

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