Abstract:
An electro-acoustic transducer includes a plurality of elements that each includes a plurality of cells. The plurality of cells includes at least two membranes that have different thicknesses. The respective frequency bands of the plurality of elements are broader than respective frequency bands of the plurality of cells that configure the plurality of elements.
Abstract:
An electro-acoustic transducer includes a plurality of elements, in which each of the plurality of elements includes a plurality of cells, of which at least one of the plurality of cells includes a trench that is formed in a membrane.
Abstract:
An ultrasonic transducer includes a plurality of transducer modules, a substrate on which each of the plurality of transducer modules is arranged, and a buffer member which buffers the movements of the upper portions of the transducer modules, wherein the buffer member is disposed on the substrate between the plurality of transducer modules and on the substrate outside of the plurality of transducer modules.
Abstract:
An ultrasonic transducer includes a substrate; and a plurality of capacitive ultrasonic cells arranged on the substrate in a predetermined direction. Thicknesses of cavities in the plurality of capacitive ultrasonic cells are determined based on locations of the plurality of capacitive ultrasonic cells in the predetermined direction.
Abstract:
An ultrasonic transducer and a method of manufacturing the same are disclosed. The ultrasonic transducer includes a first electrode layer which is disposed to cover a conductive substrate and an inner wall and a top of a via hole penetrating a membrane and has a top surface at a same height as a top surface of the membrane; a second electrode layer which is disposed on a bottom surface of the conductive substrate to be spaced apart from the first electrode layer; and a top electrode which is disposed on the top surface of the membrane and which contacts the top surface of the first electrode layer.