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US 12,428,594 B2Granted
Phosphor plate and light emitting device
AssigneeDenka Company Limited
InventorsYuki Kubota, Taiyo Yamaura, Kazuhiro Ito
Life of this patent
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Abstract
A phosphor plate includes a plate-like composite including a base material and an α-type sialon phosphor present in the base material, in which, in an X-ray diffraction analysis pattern using a Cu-Kα ray, in a case in which peak intensity corresponding to the α-type sialon phosphor having a diffraction angle 2θ in a range of 30.2° or more and 30.4° or less is defined as Iα and peak intensity of a peak having a diffraction angle 2θ in a range of 26.6° or more and 26.8° or less is defined as Iβ, Iα, and Iβ satisfy 0<Iβ/Iα≤10.
Claims9
A phosphor plate comprising:
- a plate-like composite including a base material and α-type sialon phosphor present in the base material,
- wherein, in an X-ray diffraction analysis pattern of the phosphor plate using a Cu-Kα ray, in a case in which peak intensity corresponding to the α-type sialon phosphor having a diffraction angle 2θ in a range of 30.2° or more and 30.4° or less is defined as Iα and peak intensity of a peak having a diffraction angle 2θ in a range of 26.6° or more and 26.8° or less is defined as Iβ, Iα and Iβ satisfy 0<Iβ/Iα≤10.
Dependencies are inferred from the claim text.