| 摘要 |
PROBLEM TO BE SOLVED: To provide an elastic wave device in which corrosion of a wiring conductor is suppressed. SOLUTION: An SAW (Surface Acoustic Wave) device 1 includes: a substrate 3; a SAW element 11 provided on a first principal plane 3a of the substrate 3; a wiring conductor 12 which is provided on the first principal plane 3a and connected to the SAW element 11; and an insulating protective film 25 covering the SAW element 11 and the wiring conductor 12. The protective film 25 has a thin portion 43 covering the SAW element 11 and a thick portion 45 which covers the wiring conductor 12 and is thicker than the thin portion 43. COPYRIGHT: (C)2011,JPO&INPIT |
