Title:
ELECTRET STRUCTURE AND METHOD FOR MANUFACTURING SAME, AND ELECTROSTATIC INDUCTION-TYPE CONVERSION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2013/157505
Kind Code:
A1
Abstract:
Provided is an electret structure (1) having: a fluorine resin film (21); a back electrode (22) formed on one surface of the fluorine resin film (21); and a silica layer (20) formed on the other surface of the fluorine resin film (21); the silica layer (20) comprising a plurality of insular silica regions (201) covering the fluorine resin film (21) in a mutually isolated state, a negative charge being attached to the insular silica regions (201). An electrostatic induction-type conversion element in which the electret structure (1) is used can be mounted on a substrate by reflow using a Pb-free solder.
Inventors:
KAGEYAMA KENSUKE (JP)
Application Number:
PCT/JP2013/061130
Publication Date:
October 24, 2013
Filing Date:
April 12, 2013
Export Citation:
Assignee:
UNIV SAITAMA NAT UNIV CORP (JP)
International Classes:
H01G7/02; H04R19/01; H04R19/04; H04R31/00
Domestic Patent References:
| WO2010095554A1 | 2010-08-26 | |||
| WO2009125773A1 | 2009-10-15 |
Foreign References:
| JP2004166262A | 2004-06-10 | |||
| JP2009267649A | 2009-11-12 | |||
| JP2006287279A | 2006-10-19 | |||
| JP2005151026A | 2005-06-09 | |||
| JP2005045553A | 2005-02-17 | |||
| JP2013040305A | 2013-02-28 | |||
| JP2013075945A | 2013-04-25 | |||
| JP2006287279A | 2006-10-19 | |||
| JP2009253050A | 2009-10-29 | |||
| JP2002033241A | 2002-01-31 |
Other References:
See also references of EP 2840581A4
Attorney, Agent or Firm:
SUZUKI SOHBE (JP)
Sobei Suzuki (JP)
Sobei Suzuki (JP)
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