| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive surface acoustic wave device, of high performance characteristics. SOLUTION: The device is provided with an electromagnetic shielding layer 8, which is made is a conductive organic polymer, grounded via a flat shape or vessel shape package base member 1 so as to cover a surface acoustic wave element 6, which is electrically connected to the package base member 1; and the device is also provided with an electrical insulating layer 7 which is made of an organic polymer and arranged between the electromagnetic shielding layer 8 and the surface acoustic wave element 6 for preventing short-circuiting between the signal line of the surface acoustic wave element 6 and a cable way which forms the ground. Or the device is provided with the conductive organic polymer-made electromagnetic shielding layer 8 directly on the surface acoustic wave element, which is arranged on the vessel shape package base member 1 leaving a small gap.
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