Surface acoustic wave filter and method of producing the same

Details Surface acoustic wave filter and method of producing the same Surface acoustic wave filter and method of producing the same

2008-07-08

2008-07-08

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C310S31300R, C310S340000

Reexamination Certificate

active

07397327

ABSTRACT:
A surface acoustic wave filter includes a device chip, one principal surface of a piezoelectric substrate having a wiring pattern including IDTs and pads electrically connected to the IDTs, that is disposed so as to oppose a mount board, with the pads being electrically connected to lands of the mount board through bumps. A resin film covers the other principal surface of the piezoelectric substrate and the principal surface of the mount board to seal the device chip. In the piezoelectric substrate, the area of the one principal surface is greater than the area of the other principal surface.

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