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
Reduced sorbent utilization for circulating dry scrubbers
Method and device for processing broadcast packets/multicast control messages
Method and apparatus to adjust received signal
Antibodies to CCR2
Mode detection for DVB receiver
Methods and devices for creating, compressing and searching binary tree
Stack and folding-typed electrode assembly and method for preparation of the same
  Randomly Featured Patents
Preparation of aryl intermediates
Formable, heat-stabilizable textile pile material
Medical balloon folding into predetermined shapes and method
Programmable pulse generating system
Service booth for stores and the like
Information retrieval system
Two-component developer
Parameter-free synthesis of zero-impedance converter
Adjustable vane centrifugal pump impeller construction
Golf club of the driver type