Resources Contact Us Home
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
Mobile terminal and method for displaying information
Highly specialized application protocol for email and SMS and message notification handling and display
Sense-amplifier monotizer
Creating and manufacturing documents that initially exceed equipment finishing capacity
System and method of verification of analog circuits
Verbena plant named `Duempsopicha`
Determining ill conditioning in square linear system of equations
  Randomly Featured Patents
FPC connector
Apparatus for investigating a sample with ultrasound
Vaccine composition comprising a fibronectin binding protein or a fibronectin binding peptide
Composite shoulder prosthesis
Aldimines based on 2-methyl-1,5-pentane diamine and their use for the production of polyurea coatings
Screwcapping machine
Method and apparatus for establishing, reading, and rapidly clearing a translation table memory
Method for enhancing the performance and general condition of a subject
Membrane protein having proteolytic activity obtainable from plasmodium falciparum blood schizonts and merozoites
Multifunction peripheral with efficient use of memory resources