US 12,068,438 B2
Phosphor substrate, light emitting substrate, and lighting device
Masahiro Konishi, Omuta (JP)
Assigned to DENKA COMPANY LIMITED, Tokyo (JP)
Appl. No. 17/415,448
Filed by DENKA COMPANY LIMITED, Tokyo (JP)
PCT Filed Dec. 18, 2019, PCT No. PCT/JP2019/049689
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/137762, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-244544 (JP), filed on Dec. 27, 2018.
Prior Publication US 2022/0278257 A1, Sep. 1, 2022
Int. Cl. H01L 33/50 (2010.01); H01L 25/075 (2006.01); H01L 33/40 (2010.01)
CPC H01L 33/502 (2013.01) [H01L 25/0753 (2013.01); H01L 33/40 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A phosphor substrate having at least one light emitting element mounted on one surface, the phosphor substrate comprising:
an insulating substrate;
an electrode layer disposed on one surface of the insulating substrate and bonded to the light emitting element; and
a phosphor layer which is disposed on the one surface of the insulating substrate and includes a phosphor in which a light emission peak wavelength, in a case where light emitted by the light emitting element is used as excitation light, is in a visible light region; and
an electronic component which is not the light emitting element and is mounted on the one surface of the insulating substrate,
wherein a surface of the electrode layer facing an outer side in a thickness direction of the insulating substrate is a flat surface, and
at least a part of the phosphor layer is disposed around a bonded portion of the electrode layer with the light emitting element.