Title:
エレクトレットおよび静電誘導型変換素子
Document Type and Number:
Japanese Patent JP5267555
Kind Code:
B2
Abstract:
To provide an electret having a high surface charge density, and an electrostatic induction conversion device comprising such an electret. An electret comprising a laminate wherein a layer (A) containing a polymer compound (a) having a relative dielectric constant of from 1.8 to 3.0 and a layer (B) containing a polymer compound (b) or inorganic substance (c) having a relative dielectric constant higher than the polymer compound (a) are directly laminated, wherein the difference between the relative dielectric constant of the polymer compound (b) or inorganic substance (c) and the relative dielectric constant of the polymer compound (a) is at least 0.3; the layer (A) is disposed on the outermost surface on a side opposite to the side where electric charge is injected at the time of injecting electric charge into the laminate to form the electret; and the layer (B) has a thickness of at least 1 µm.
Inventors:
Kashiwagi
Kuniko Okano
Kuniko Okano
Application Number:
JP2010505738A
Publication Date:
August 21, 2013
Filing Date:
March 25, 2009
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
H01G7/02; B32B7/02; B32B9/00; B32B27/00
Domestic Patent References:
| JP2004128361A | 2004-04-22 | |||
| JP2006180450A | 2006-07-06 | |||
| JP2004128361A | 2004-04-22 | |||
| JP2005537358A | 2005-12-08 | |||
| JP2005262497A | 2005-09-29 | |||
| JP2003199197A | 2003-07-11 | |||
| JP2005191467A | 2005-07-14 |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai