Title:
PIEZOELECTRIC FILM
Document Type and Number:
WIPO Patent Application WO/2015/064328
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a piezoelectric film that has suppressed coloring and, when used in a touch panel or the like, involves high visibility of a display device. The present invention provides a piezoelectric film comprising a polarized fluorinated vinylidene polymer film of which the yellowness (YI) value measured in conformance with JIS K7105 is no greater than 2, and in the L*a*b* color system measured in conformance with JIS K7105, L* is at least 85, a* is at least 0.5, and b* is no greater than 1.5.
Inventors:
KOU MEITEN
KANEMURA TAKASHI
MUKAI ERI
KODANI TETSUHIRO
KANEMURA TAKASHI
MUKAI ERI
KODANI TETSUHIRO
Application Number:
PCT/JP2014/077023
Publication Date:
May 07, 2015
Filing Date:
October 08, 2014
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H01L41/193; G06F3/041; H01L41/257; H01L41/45
Domestic Patent References:
| WO2012029849A1 | 2012-03-08 |
Foreign References:
| JP2011181748A | 2011-09-15 | |||
| JP2011194679A | 2011-10-06 | |||
| JP2008171935A | 2008-07-24 | |||
| JP2010026938A | 2010-02-04 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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