Invention Grant
- Patent Title: Light-emitting device, method for producing the same and fluorescent device
- Patent Title (中): 发光装置及其制造方法及荧光装置
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Application No.: US11685416Application Date: 2007-03-13
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Publication No.: US07960909B2Publication Date: 2011-06-14
- Inventor: Akio Amano , Hiroki Iwanaga
- Applicant: Akio Amano , Hiroki Iwanaga
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Turocy & Watson, LLP
- Priority: JP2006-069066 20060314
- Main IPC: H05B33/04
- IPC: H05B33/04 ; H01L33/00

Abstract:
A light-emitting device assured of high reliability, high efficiency and high color rendering, is provided. The light-emitting device includes a frame, an LED chip provided on the frame, and a fluorescent layer containing an inorganic fluorescent material and an organic fluorescent material and being provided on the LED chip. In the fluorescent layer, the concentration of the inorganic fluorescent material is decreased toward the top from the bottom of the fluorescent layer, and the concentration of the organic fluorescent material is decreased toward the bottom from the top of the fluorescent layer.
Public/Granted literature
- US20070228932A1 LIGHT-EMITTING DEVICE, METHOD FOR PRODUCING THE SAME AND FLUORESCENT DEVICE Public/Granted day:2007-10-04
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