Title:
エレクトレット化フィルムおよび電子装置
Document Type and Number:
Japanese Patent JP6705975
Kind Code:
B2
Abstract:
An electretized film of the present invention includes a cyclic olefin polymer, in which the electretized film is a non-porous film, and a piezoelectric constant d33in a thickness direction, which is measured by applying a pressing force to the electretized film in the thickness direction, under conditions of a load of 0.5 N, a dynamic load of ±0.25 N, a frequency of 110 Hz, a temperature of 23°C, and a humidity of 50%, is equal to or more than 100 pC/N.
Inventors:
Yoshiro Tami
Yuzo Nakamura
Tomoya Matayoshi
Takayuki Watanabe
Masao Eriguchi
Yuzo Nakamura
Tomoya Matayoshi
Takayuki Watanabe
Masao Eriguchi
Application Number:
JP2019503114A
Publication Date:
June 03, 2020
Filing Date:
March 01, 2018
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
Kansai University
Kansai University
International Classes:
H01G7/02; H01L41/09; H01L41/113; H01L41/193
Domestic Patent References:
| JP2014141651A | ||||
| JP2011086924A | ||||
| JP2002505034A |
Attorney, Agent or Firm:
Shinji Hayami