Surface acoustic wave device
First Claim
1. A surface acoustic wave device, comprising:
- a pair of piezo-electric substrates each having one surface formed with interdigital electrodes and a casing for receiving said piezo-electric substrates, said piezo-electric substrates being arranged with said one surfaces facing each other with a predetermined space therebetween, electrode pads on said piezo-electric substrates, electrically conductive members arranged in said predetermined space between said electrode pads, one of said pair of piezo-electric substrates being smaller and the other being larger in size, said larger piezo-electric substrate having bonding pads disposed on said one surface thereof and at opposite sides of said one surface, and said smaller piezo-electric substrate positioned between said bonding pads at opposite sides of said one surface of said larger piezo-electric substrate.
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Accused Products
Abstract
A surface acoustic wave device of the present invention includes piezo-electric substrates 1 and 2 each having one surface formed with interdigital electrodes 12A, 12B, for transmission and receiving of surface acoustic waves, are received in a casing including a stem 4, a seal ring 9 and a cover plate 5, etc. The piezo-electric substrates 1 and 2 are arranged such that the one surfaces thereof face each other with a predetermined space therebetween and electrically conductive members 3 are disposed between the piezo-electric substrates 1 and 2. The electrically conductive members 3 may be gold bumps, solder bumps, metal balls of such as solder or copper, electrically conductive adhesive members or electrically conductive rubber members, etc. The surface acoustic wave device is applicable to such as filters and featured by having small mounting area and easiness of manufacture.
49 Citations
8 Claims
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1. A surface acoustic wave device, comprising:
a pair of piezo-electric substrates each having one surface formed with interdigital electrodes and a casing for receiving said piezo-electric substrates, said piezo-electric substrates being arranged with said one surfaces facing each other with a predetermined space therebetween, electrode pads on said piezo-electric substrates, electrically conductive members arranged in said predetermined space between said electrode pads, one of said pair of piezo-electric substrates being smaller and the other being larger in size, said larger piezo-electric substrate having bonding pads disposed on said one surface thereof and at opposite sides of said one surface, and said smaller piezo-electric substrate positioned between said bonding pads at opposite sides of said one surface of said larger piezo-electric substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification