US 12,284,848 B2
Phosphor plate, light emitting device, and method for manufacturing phosphor plate
Taiyo Yamaura, Tokyo (JP); Yuki Kubota, Tokyo (JP); Kazuhiro Ito, Tokyo (JP); and Hideyuki Emoto, Tokyo (JP)
Assigned to DENKA COMPANY LIMITED, Tokyo (JP)
Appl. No. 17/769,902
Filed by DENKA COMPANY LIMITED, Tokyo (JP)
PCT Filed Oct. 7, 2020, PCT No. PCT/JP2020/037946
§ 371(c)(1), (2) Date Apr. 18, 2022,
PCT Pub. No. WO2021/079739, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2019-192949 (JP), filed on Oct. 23, 2019.
Prior Publication US 2022/0399480 A1, Dec. 15, 2022
Int. Cl. H01L 33/50 (2010.01); C09K 11/67 (2006.01); H10H 20/851 (2025.01); H10H 20/825 (2025.01)
CPC H10H 20/8512 (2025.01) [C09K 11/676 (2013.01); H10H 20/8514 (2025.01); H10H 20/825 (2025.01)] 10 Claims
OG exemplary drawing
 
1. A phosphor plate comprising:
a complex containing an α-sialon phosphor and a sintered body containing spinel represented by a general formula M2xAl4-4xO6-4x (where M represents at least one of Mg, Mn, and Zn, and 0.2<x<0.6),
wherein a total value of a content of the α-sialon phosphor and the sintered body containing the spinel is equal to or more than 99% by volume and equal to or less than 100% by volume with respect to the entire complex.