Title:
FLEXIBLE ELECTRONIC ELEMENT SUBSTRATE, ORGANIC THIN FILM SOLAR CELL, LAMINATED STRUCTURE AND METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR MANUFACTURING FLEXIBLE ELECTRONIC ELEMENT
Document Type and Number:
WIPO Patent Application WO/2020/026495
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a flexible electronic element substrate comprising a polyimide layer that has both low ultraviolet transmittance and high visible light transmittance and that is capable of suppressing ultraviolet degradation without any reduction in the performance of an electronic element. In order to solve this problem, the flexible electronic element substrate comprises a polyimide layer that satisfies all of (1) through (3) below: (1) maximum transmittance at a wavelength of 400 ±5 nm is 70% or higher at a thickness of 5 μm; (2) the b* value in an L*a*b* color system is 5 or less at a thickness of 5 μm; and (3) transmittance of light at a wavelength of 350 nm is 10% or less at a thickness of 5 μm.
Inventors:
FUKUDA KENJIRO
KIMURA HIROKI
SOMEYA TAKAO
FUKUKAWA KENICHI
OKAZAKI MASAKI
URAKAMI TATSUHIRO
KIMURA HIROKI
SOMEYA TAKAO
FUKUKAWA KENICHI
OKAZAKI MASAKI
URAKAMI TATSUHIRO
Application Number:
PCT/JP2019/008427
Publication Date:
February 06, 2020
Filing Date:
March 04, 2019
Export Citation:
Assignee:
RIKEN (JP)
MITSUI CHEMICALS INC (JP)
MITSUI CHEMICALS INC (JP)
International Classes:
C08J5/18; B32B27/34; C08G73/10; H01L51/44
Foreign References:
| JP2017203984A | 2017-11-16 | |||
| JP2018125496A | 2018-08-09 | |||
| JP2018197822A | 2018-12-13 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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