US 12,031,069 B2
Wavelength conversion member, and light emitting device using same
Naoki Fujita, Otsu (JP); and Takashi Murata, Otsu (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Filed by NIPPON ELECTRIC GLASS CO., LTD., Otsu (JP)
Filed on Nov. 29, 2021, as Appl. No. 17/536,297.
Application 17/536,297 is a continuation of application No. 16/090,595, granted, now 11,254,862, previously published as PCT/JP2017/021376, filed on Jun. 8, 2017.
Claims priority of application No. 2016-126535 (JP), filed on Jun. 27, 2016.
Prior Publication US 2022/0081612 A1, Mar. 17, 2022
Int. Cl. C09K 11/08 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 3/095 (2006.01); C03C 3/097 (2006.01); C03C 4/12 (2006.01); C03C 14/00 (2006.01); C09K 11/02 (2006.01); C09K 11/64 (2006.01); C09K 11/77 (2006.01); F21S 41/141 (2018.01); F21S 41/176 (2018.01); H01L 33/50 (2010.01); F21Y 115/10 (2016.01)
CPC C09K 11/025 (2013.01) [C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/095 (2013.01); C03C 3/097 (2013.01); C03C 4/12 (2013.01); C03C 14/00 (2013.01); C03C 14/004 (2013.01); C09K 11/0883 (2013.01); C09K 11/646 (2013.01); C09K 11/7706 (2013.01); C09K 11/77348 (2021.01); C09K 11/77747 (2021.01); F21S 41/141 (2018.01); F21S 41/176 (2018.01); H01L 33/50 (2013.01); C03C 2214/04 (2013.01); F21Y 2115/10 (2016.08)] 6 Claims
OG exemplary drawing
 
1. A wavelength conversion member formed of an inorganic phosphor dispersed in a glass matrix, wherein
the glass matrix contains, in % by mole, 30 to 63.5% SiO2, 8.5 to 18% B2O3, 0 to 25% Al2O3, 0 to 3% Li2O, 0 to 3% Na2O, 0 to 3% K2O, 0 to 3% Li2O+Na2O+K2O, 0 to 35% MgO, 0 to 11.3% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 5% ZnO,
the glass matrix has a softening point of 918° C. to 1100° C., and
the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.