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Title:
WAVELENGTH CONVERSION MEMBER
Document Type and Number:
WIPO Patent Application WO/2021/066054
Kind Code:
A1
Abstract:
Provided is a wavelength conversion member 1 which comprises a substrate 10 and a wavelength conversion layer 11 that includes a phosphor particle group 12 and a sealing member 13 for sealing the phosphor particle group 12 and that is provided on the substrate 10 directly or with another layer therebetween, wherein: a predetermined region, in which the area ratio of the cross-section of the phosphor particle group 12 is 50% or more, is included in an arbitrary cross-section parallel to the thickness direction of the wavelength conversion layer 11; when the thickness of the wavelength conversion layer 11 is at least 50 μm, the predetermined region is a rectangular region that has a thickness of 50 μm from the bottom surface of the wavelength conversion layer 11 and a width of 700 μm; and when the thickness of the wavelength conversion layer 11 is less than 50 μm, the predetermined region is a rectangular region that has the same thickness as that of the wavelength conversion layer 11 and a width of 700 μm.

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Inventors:
INOMATA DAISUKE (JP)
SUZUKI RIKIYA (JP)
ARAI YUSUKE (JP)
YAMASHITA YOSHIHIRO (JP)
SAWANO HIROYUKI (JP)
SHIMAMURA KIYOSHI (JP)
GARCIA VILLORA ENCARNACION ANTONIA (JP)
Application Number:
PCT/JP2020/037273
Publication Date:
April 08, 2021
Filing Date:
September 30, 2020
Export Citation:
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Assignee:
TAMURA SEISAKUSHO KK (JP)
NAT INST MATERIALS SCIENCE (JP)
International Classes:
C09K11/02; C09K11/64; G02B5/20; H01S5/022
Foreign References:
JP2017137394A2017-08-10
JP2019164302A2019-09-26
JP2018087327A2018-06-07
JP2007191680A2007-08-02
JP2006010388A2006-01-12
JP2019039992A2019-03-14
JP2012008177A2012-01-12
JPS6232951B21987-07-17
Other References:
See also references of EP 4039770A4
Attorney, Agent or Firm:
HIRATA & PARTNERS (JP)
Download PDF:
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