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
Scanning transmission electron microscope and axial adjustment method thereof
Selection of system parameters based on non-acoustic sensor information
Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using
Managing deduplication density
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
Distributed IPv6 neighbor discovery for large datacenter switching systems
Semiconductor process
  Randomly Featured Patents
Synergistic mixtures of selected amino acids
Bidirectional, transconductance, DC amplifier having high output compliance voltage
Binding protein as biosensors
Protection circuits
Aluminum-lithium alloys having improved corrosion resistance and method
Process for beneficiating oxide ores
Method of making a resistor, method of making a diode, and SRAM circuitry and other integrated circuitry
Ceramic/metallic articulation component and prothesis
Moving picture coding method, moving picture coding apparatus, and moving picture coding program
Method for updating and preserving data when performing a software upgrade