Title:
ELECTRET DEVICE
Document Type and Number:
Japanese Patent JP2014217178
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electret device capable of increasing the stabilization of charge holding.SOLUTION: An electret device 100 includes: a substrate 108; an electret film 103 formed over the substrate 108; and a conductive electrode 104 which is formed in an area where the electret film 103 is not formed on the substrate 108. A concave structure 105 is formed between the electret film 103 and the conductive electrode 104 to prevent electric charge held by the electret film 103 from flowing to the conductive electrode 104.
Inventors:
TAKEUCHI HIROKI
NAITO YASUYUKI
NAITO YASUYUKI
Application Number:
JP2013092860A
Publication Date:
November 17, 2014
Filing Date:
April 25, 2013
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H02N1/08; H01G7/02
Attorney, Agent or Firm:
Mutsumi Sameshima
Yasuo Tamura
On a word Keiichi
Yamao 憲人
Sanae Genba
Yasuo Tamura
On a word Keiichi
Yamao 憲人
Sanae Genba