Invention Grant
- Patent Title: Phosphor and manufacturing method for the same, and light source
- Patent Title (中): 磷光体及其制造方法相同,而光源
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Application No.: US12292889Application Date: 2008-11-28
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Publication No.: US07803286B2Publication Date: 2010-09-28
- Inventor: Kenji Sakane , Akira Nagatomi , Masahiro Gotoh , Shuji Yamashita , Tetsuya Ikuta
- Applicant: Kenji Sakane , Akira Nagatomi , Masahiro Gotoh , Shuji Yamashita , Tetsuya Ikuta
- Applicant Address: JP Tokyo JP Anan-Shi
- Assignee: Dowa Electronics Materials Co., Ltd.,Nichia Corporation
- Current Assignee: Dowa Electronics Materials Co., Ltd.,Nichia Corporation
- Current Assignee Address: JP Tokyo JP Anan-Shi
- Agency: Oliff & Berridge, PLC
- Priority: JP2004-248405 20040827; JP2005-105126 20050331
- Main IPC: C09K11/08
- IPC: C09K11/08

Abstract:
To provide a phosphor having an emission spectrum with a broad peak in a range from yellow color to red color (580 nm to 680 nm) and an excellent excitation band on the longer wavelength side from near ultraviolet/ultraviolet of excitation light to visible light (250 nm to 550 nm), and having an improved emission intensity. The phosphor is provided, which is given by a general composition formula expressed by MmAaBbOoNn:Z, (wherein element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element B is more than one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element selected from rare earth elements or transitional metal elements, satisfying m>0, a>0, b>0 o≧0, and n=2/3m+a+4/3b−2/3o), and further containing boron and/or fluorine.
Public/Granted literature
- US20090109652A1 Phosphor and manufacturing method for the same, and light source Public/Granted day:2009-04-30
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