公开(公告)号：US20210189234A1

公开(公告)日：2021-06-24

申请号：US17272827

申请日：2019-08-22

Applicant: DENKA COMPANY LIMITED

Inventor： Keita KOBAYASHI ,  Shunsuke MITANI ,  Ryousuke KONDO ,  Kazuya SUGITA ,  Takuya MATSUFUJI ,  Akihisa KAJIYAMA

IPC: C09K11/77 ,  C09K11/08

Abstract: A β-type sialon phosphor represented by the following expression 1, in which D50 is 10 μm or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [μm]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0