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Title:
LUMINESCENT DISPLAY DEVICE AND LIGHT-BLOCKING LAYER-EQUIPPED FIBER SHEET FOR USE IN LUMINESCENT DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/131989
Kind Code:
A1
Abstract:
This luminescent display device is provided with a luminescent member and a light-blocking layer-equipped fiber sheet for covering a light-emitting face of the luminescent member. The light-blocking layer-equipped fiber sheet comprises a fiber sheet and a light-blocking layer that is printed partially on at least one surface of the fiber sheet. The surface having the light-blocking layer formed thereon has an arithmetic average height Sa of 3-20 μm as measured in accordance with ISO 25178, and has an apparent density of at least 0.5 g/cm3.

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Inventors:
DAIMON TATSUYA (JP)
ITO TOSHIYUKI (JP)
EGUCHI DAISUKE (JP)
Application Number:
PCT/JP2020/047052
Publication Date:
July 01, 2021
Filing Date:
December 16, 2020
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
D06N3/00; F21S2/00; G09F13/04
Foreign References:
JP2016081817A2016-05-16
JP2017133133A2017-08-03
JP2001277409A2001-10-09
JP2013177714A2013-09-09
US4180934A1980-01-01
JP2013177714A2013-09-09
JP2014173203A2014-09-22
JP2016081817A2016-05-16
Other References:
See also references of EP 4083312A4
Attorney, Agent or Firm:
EGAWA Masaru et al. (JP)
Download PDF:
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