Title:
REFLECTIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2020/066367
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a reflective sheet having a reflective layer which has a wide reflected wavelength band and an excellent diffuse reflection property, and in which defects are inconspicuous. The problem is solved by means of a reflective sheet having a configuration in which a plurality of reflective layers, in which a cholesteric liquid crystal phase is immobilized, are stacked, wherein: in a cross section of the reflective layer when observed with a scanning electron microscope, at least a portion of light sections and dark sections derived from the cholesteric liquid crystal phase have a wavy structure; for one or more of the reflective layers the helical pitch changes in the thickness direction; and a reflective layer that forms a surface with a layer other than a reflective layer is thinner than the other reflective layer.
Inventors:
ISHIGURO MAKOTO (JP)
KANEIWA HIDEKI (JP)
ICHIHARA NOBUHIKO (JP)
YAMAMOTO AKIRA (JP)
SANETO RYUJI (JP)
NAGAI MICHIO (JP)
KANEIWA HIDEKI (JP)
ICHIHARA NOBUHIKO (JP)
YAMAMOTO AKIRA (JP)
SANETO RYUJI (JP)
NAGAI MICHIO (JP)
Application Number:
PCT/JP2019/032419
Publication Date:
April 02, 2020
Filing Date:
August 20, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/08; B32B7/023; G02B5/30
Domestic Patent References:
| WO2018159751A1 | 2018-09-07 | |||
| WO2016098799A1 | 2016-06-23 | |||
| WO2016017728A1 | 2016-02-04 |
Foreign References:
| JP2006154865A | 2006-06-15 | |||
| JP2004302388A | 2004-10-28 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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