发明申请
- 专利标题: LED illumination device with layered phosphor pattern
- 专利标题(中): 具有层状磷光体图案的LED照明装置
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申请号: US10813338申请日: 2004-03-30
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公开(公告)号: US20050227388A1公开(公告)日: 2005-10-13
- 发明人: Anant Setlur , Joseph Shiang , Alok Srivastava , Holly Comanzo , Stanton Weaver , Charles Becker
- 申请人: Anant Setlur , Joseph Shiang , Alok Srivastava , Holly Comanzo , Stanton Weaver , Charles Becker
- 主分类号: C09K11/66
- IPC分类号: C09K11/66 ; C09K11/77 ; H01J1/62 ; H01J63/04 ; H01L21/00 ; H01L33/50
摘要:
A method of applying at least two phosphors to an LED, wherein a first phosphor material having a lower absorption, shorter luminescence decay time, and/or lower thermal quenching than a second phosphor material is positioned closer to the LED than the second phosphor. Such an arrangement provides a light emitting device with improved lumen output and color stability over a range of drive currents.
公开/授权文献
- US07327078B2 LED illumination device with layered phosphor pattern 公开/授权日:2008-02-05
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