Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Manufacturing method of acoustic sensor










Image Number 4 for United States Patent #7080442.

The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a semiconductor chip 110 forming necessary electronic circuits 111A to 111C, and opening a through hole 112 away from the electronic circuits 111A to 111C, an electrode layer 120 formed on the surface of the semiconductor chip 110 away from the through hole 112, an electret member 130 laminated away from part of the electrode layer 120 and through hole 112, and a diaphragm 140 provided with a spacing 160 to the electret member 130, in which the electrode layer 120 exposed from the electret member 130 is connected to the electrode 111a of the electronic circuit 111A through the case 200 (FIG. 6).








 
 
  Recently Added Patents
Plants and seeds of hybrid corn variety CH817100
Reliable event broadcaster with multiplexing and bandwidth control functions
Perspective runway system
Pyridyldiamido transition metal complexes, production and use thereof
Methods of preventing and treating viral infections by inhibiting the deISGylation activity of OTU domain-containing viral proteins
Information processing apparatus, method for controlling information processing apparatus, and storage medium
Polypeptides and immunizing compositions containing gram positive polypeptides and methods of use
  Randomly Featured Patents
Synchronized envelope and transient simulation of circuits
Apparatus for and method of cleaning substrates
Microcantilever apparatus and methods for detection of enzymes, enzyme substrates, and enzyme effectors
X-ray filter having dynamically displaceable x-ray attenuating fluid
Archery apparatus and archery method
Apparatus and method for processing collision information in graphic system
Electronic image color plane reconstruction
Shelter with armoring composite walls and doors
Tunable optical filter
Reducing aqueous boron concentrations with reverse osmosis membranes operating at a high pH