Patent ID: 9154886
Filing Date: 2015-10-06
Classification: B06B,B81B,G01D,H04R,Y10T

Abstract:
1. A capacitive transducer, comprising: a substrate having an opening; a first electrode disposed on a surface of the substrate; at least one supporting beam structure disposed on the first electrode, wherein the supporting beam structure connects the substrate and supports the first electrode; a second electrode disposed on the supporting beam structure and opposite the surface of the substrate, wherein the second electrode and the first electrode are separated by a spacing, the second electrode has a center portion opposite the opening and an edge portion surrounding the center portion, the center portion of the second electrode is supported by the supporting beam structure, and the center portion and the edge portion are discontinuous structures, the first electrode suspends between the opening of the substrate and the second electrode through the supporting beam structure; and a first dielectric layer disposed between the supporting beam structure and the first electrode, wherein a bottom of the first electrode is entirely exposed toward the opening without the first dielectric layer.