http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-200376861-Y1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R17-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R1-2846 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R23-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R19-02 |
| filingDate | 2004-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2005-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-200376861-Y1 |
| titleOfInvention | Condenser type speaker |
| abstract | The disclosed condenser speaker is coated with an electrode forming conductor on one surface of a polymer film to form a conductor coating layer, and a diaphragm having an aerogel applied to the other surface of the polymer film to form an airgel layer, and located on one surface of the vibration plate. And a piezoelectric element which forms an anode with the diaphragm and generates negative pressure by a piezoelectric effect, a PCB electrically connected to the diaphragm and the piezoelectric element to apply an external AC voltage, and a diaphragm opposite to the piezoelectric element. A first insulator located on the other side, and a case for receiving and fixing each of the above components and a negative pressure outlet formed on one side.n n n According to the present invention described above, the piezo element does not have to generate a sufficient sound pressure for driving the condenser speaker to provide a matching transformer or a separate driving circuit, so that the circuit configuration of the audio device is simple and inexpensive. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100697350-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100722688-B1 |
| priorityDate | 2004-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.