Invention Grant
- Patent Title: Fluorescent substance containing rare earth metal, luminous composition comprising the same, process for manufacturing thereof, and light-emitting element comprising the fluorescent substance
- Patent Title (中): 含有稀土金属的荧光物质，含有它们的发光组合物，其制造方法以及包含该荧光物质的发光元件
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Application No.: US12178199Application Date: 2008-07-23
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Publication No.: US08080173B2Publication Date: 2011-12-20
- Inventor: Takahiro Sato , Hiroki Iwanaga , Akio Amano , Shinji Murai
- Applicant: Takahiro Sato , Hiroki Iwanaga , Akio Amano , Shinji Murai
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-213638 20070820
- Main IPC: C09K11/06
- IPC: C09K11/06
Abstract:
The present invention provides a fluorescent substance excellent in emission intensity and in emission efficiency. The substance can be excited by light at a longer wavelength than ever. The present invention also provides a luminous composition comprising the fluorescent substance and a light-emitting element using the substance. The fluorescent substance comprises a rare earth metal and a phosphine oxide ligand which coordinates to said rare earth metal and said ligand containing at least one siloxane bond in its structure. The fluorescent substance can be produced from a reaction between a compound having a siloxane bond and a rare earth complex coordinated by a phosphine oxide ligand. The luminous composition comprises the fluorescent substance.
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