Protection of saw devices comprising metallized regions on diele

Details Protection of saw devices comprising metallized regions on diele Protection of saw devices comprising metallized regions on diele

1984-03-01

1986-12-09

Salce, Patrick R.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

29 2535, 333153, H03H 925, B05D 512

Patent

active

046282220

ABSTRACT:
In devices comprising closely spaced metallized regions deposited upon a dielectric substrate, in particular acoustic wave devices, electric fields may arise between the regions due to pyroelectric effects or acquired static charges during production or subsequently. These fields can cause damage by arcing or cracking of the substrate. The present method overcomes this problem by providing resistive links between such regions so that the fields do not arise. Preferably the links are of metallizing formed simultaneously with the metallized regions. Application to a SAW convolver is described in which the links are strips of metallizing (7,8,9).

REFERENCES:
patent: 4330768 (1982-05-01), Huang et al.
patent: 4445805 (1984-05-01), Lewis

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