Patent ID: 9013251
Filing Date: 2015-04-21
Classification: H03H

Abstract:
1. An acoustic wave device, comprising: a substrate; a first IDT electrode on a main surface of the substrate, comprising a second IDT electrode on the main surface of the substrate, comprising a floating member located on the main surface of the substrate, which is located in at least one of: a space defined as between the edges of the first ground bus bar and the second signal connecting bus bar in the direction of the acoustic propagation and the direction orthogonal to the direction of acoustic propagation along the plane of the substrate surface; and a space defined as between the edges of the first signal connecting bus bar and the second ground bus bar in the direction of the acoustic propagation and the direction orthogonal to the direction of acoustic propagation along the plane of the substrate surface; and is not connected to any of the first ground bus bar, the second signal connecting bus bar, the first signal connecting bus bar, and the second ground bus bar; and where one or more fingers that are of at least one of the first electrode fingers and the second electrode fingers, and connected to the same bus bar, are facing to the floating member, and the width of the floating member in the direction of propagation of the acoustic wave is the same or more than the width of the region in which the electrode fingers facing to the floating member are located.