Invention Grant
- Patent Title: Phosphor and light emitting device
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Application No.: US15106780Application Date: 2014-12-22
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Publication No.: US10093854B2Publication Date: 2018-10-09
- Inventor: Hiroaki Toyoshima , Ryo Yoshimatsu
- Applicant: Denka Company Limited
- Applicant Address: JP Tokyo
- Assignee: Denka Company Limited
- Current Assignee: Denka Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Bozicevic, Field & Francis LLP
- Agent Carol L. Francis; Rudy J. Ng
- Priority: JP2013/269044 20131226
- International Application: PCT/JP2014/083863 WO 20141222
- International Announcement: WO2015/098814 WO 20150702
- Main IPC: C09K11/79
- IPC: C09K11/79 ; C09K11/77 ; C09K11/08 ; H05B33/14 ; H01L33/50
Abstract:
The present invention relates to a complex oxynitride phosphor which is efficiently excited in the UV to near-UV wavelength region and emits green to yellow light, and a light emitting device using the phosphor. The phosphor according to the present invention is characterized in that it is represented by general formula: M1aM2bRecSidOeNf; wherein M1 is one or more elements selected from Y, Sc, La, and Al; M2 is one or more elements selected from Zn, Sr, Ba, Ca, and Mg; Re is one or more elements selected from Ce, Pr, Sm, Eu, Dy, Ho, Er, Tm, Yb, Ti, Cr, and Mn among rare-earth elements and transition metal elements; and a, b, c, d, e, and fin the formula satisfy the relationships: a+b+c=1, 0.20
Public/Granted literature
- US20180163128A1 Phosphor and Light Emitting Device Public/Granted day:2018-06-14
Information query
