Method of manufacturing surface acoustic ware modules
First Claim
1. A method of manufacturing a surface acoustic wave module comprising the steps of:
- forming a conductive metallic film on a sheet of a surface acoustic wave transmitting substrate;
forming electrodes for driving and receiving a surface acoustic wave on said conductive metallic film;
cutting said sheet into a plurality of surface acoustic wave modules; and
thentreating said conductive metallic film so as to increase its resistivity to at least 103 Ω
cm.
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Accused Products
Abstract
A surface acoustic module is stable, and its operation frequencies can be varied with high precision. A method of manufacturing the surface acoustic module prevents the module'"'"'s electrodes from being broken during separation of a sheet of modules into individual components. The surface acoustic module includes electrodes for transmitting and receiving a surface acoustic wave, a surface acoustic wave transmitting substrate, a high resistance thin film, and a thin film for differentiating the transmission velocity of a surface acoustic wave at the high resistance thin film from that at the substrate. The method includes the steps of forming a metallic film on a sheet of the surface acoustic wave transmitting substrate, of forming the electrodes on the metallic film, and of irradiating light or the like to the metallic film so as to increase the film'"'"'s resistivity.
29 Citations
10 Claims
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1. A method of manufacturing a surface acoustic wave module comprising the steps of:
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forming a conductive metallic film on a sheet of a surface acoustic wave transmitting substrate; forming electrodes for driving and receiving a surface acoustic wave on said conductive metallic film; cutting said sheet into a plurality of surface acoustic wave modules; and
thentreating said conductive metallic film so as to increase its resistivity to at least 103 Ω
cm. - View Dependent Claims (3, 4, 5, 6)
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2. A method of manufacturing a surface acoustic wave module comprising the steps of:
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forming electrodes for driving and receiving a surface acoustic wave on a sheet of a surface acoustic wave transmitting substrate; forming a conductive metallic film on said electrodes for driving and receiving a surface acoustic wave; cutting said sheet into a plurality of surface acoustic wave modules; and
thentreating said conductive metallic film so as to increase its resistivity to at least 103 Ω
cm. - View Dependent Claims (7, 8, 9, 10)
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Specification