Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Electrostatic ultrasonic transducer and ultrasonic speaker










Image Number 17 for United States Patent #8126171.

An electrostatic ultrasonic transducer includes a first electrode that has through-holes, a second electrode that has through-holes, and a vibrating membrane that is disposed such that the through-holes of the first electrode and the through-holes of the second electrode form a pair, interposed between a pair of electrodes composed of the first electrode and the second electrode, and having a conductive layer applied with a direct current bias voltage. The first electrode and the second electrode each have counter electrode portions that are formed in the through-holes to face the vibrating membrane, and a modulated wave, which is obtained by modulating a carrier wave in an ultrasonic frequency band with a signal wave in an audible frequency band, is applied between the pair of electrodes.








 
 
  Recently Added Patents
Managing breakpoints in a multi-threaded environment
Methods and systems for optimizing data accesses
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
Subpixel-based image down-sampling
Plants and seeds of hybrid corn variety CH367819
Vehicle window opening and closing control device
DFPase enzymes from Aplysia californica
  Randomly Featured Patents
Method and system for providing direct access recovery using seekable tape device
Method for testing semiconductor device having embedded nonvolatile memory
Multilayer ceramic substrate and manufacture thereof
Method and apparatus for managing flow information in a communication system
Process for producing heavy-duty high-pressure ferrous metal cup-shaped products having a cylindrical barrel
Integrated battery service system
Distortion compensation apparatus and apparatus and method for transmitting signal
Method for heteroepitaxial growth using multiple MBE chambers
Connector structure
Topology for a single ended input dual balanced mixer