Invention Grant
- Patent Title: Luminescent material
- Patent Title (中): 发光材料
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Application No.: US13601070Application Date: 2012-08-31
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Publication No.: US08974697B2Publication Date: 2015-03-10
- Inventor: Keiko Albessard , Masahiro Kato , Yumi Fukuda , Iwao Mitsuishi , Takahiro Sato , Shigeya Kimura , Aoi Okada , Naotoshi Matsuda , Ryosuke Hiramatsu , Yasushi Hattori , Kunio Ishida , Hironori Asai
- Applicant: Keiko Albessard , Masahiro Kato , Yumi Fukuda , Iwao Mitsuishi , Takahiro Sato , Shigeya Kimura , Aoi Okada , Naotoshi Matsuda , Ryosuke Hiramatsu , Yasushi Hattori , Kunio Ishida , Hironori Asai
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-268212 20111207
- Main IPC: C09K11/59
- IPC: C09K11/59 ; C09K11/77 ; H05B33/12 ; H01L33/50
Abstract:
According to one embodiment, the luminescent material shows a luminescence peak in a wavelength range of 570 to 670 nm when excited with light having an emission peak in a wavelength range of 250 to 520 nm. The luminescent material includes a host material having a crystal structure substantially same as the crystal structure of Sr2Si7Al3ON13. The host material is activated by Eu, and includes Sr and Ca to satisfy a relationship of 0.008≦MCa/(MSr+MCa)≦0.114, where MCa is a number of moles of Ca and MSr is a number of moles of Sr.
Public/Granted literature
- US20130234585A1 LUMINESCENT MATERIAL Public/Granted day:2013-09-12
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