Title:
PHOSPHOR PARTICLES, COMPOSITE, WAVELENGTH CONVERSION MEMBER, AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2022/024720
Kind Code:
A1
Abstract:
Provided are phosphor particles for manufacturing a wavelength conversion member for a projector, the phosphor particles comprising β-SiAlON. A cured sheet that has a film thickness of 50±5 µm and that is fabricated using the phosphor particles satisfies the following optical characteristics. Optical characteristics: It/Ii is 0.50 or less and Ip/Ii is 0.03 or greater, where Ii [W/nm] is the intensity at a peak wavelength of blue light emitted by a blue LED having a peak wavelength within the range of 450-460 nm, and, when one side of the cured sheet is irradiated with the blue light, It [W/nm] is the intensity of light emitted from the other side of the cured sheet at a peak wavelength within the range of 450-460 nm, and Ip [W/nm] is the intensity of said light at a peak wavelength within the range of 500-560 nm.
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Inventors:
MITANI SHUNSUKE (JP)
KOBAYASHI KEITA (JP)
KOBAYASHI KEITA (JP)
Application Number:
PCT/JP2021/025925
Publication Date:
February 03, 2022
Filing Date:
July 09, 2021
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C09K11/64; G02B5/20; G03B21/14; H01L33/50
Domestic Patent References:
| WO2020054350A1 | 2020-03-19 | |||
| WO2019188631A1 | 2019-10-03 | |||
| WO2017122800A1 | 2017-07-20 | |||
| WO2012042957A1 | 2012-04-05 |
Foreign References:
| JP2018135406A | 2018-08-30 | |||
| JP2012052127A | 2012-03-15 |
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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