Invention Grant
- Patent Title: Light emitting device
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Application No.: US15662287Application Date: 2017-07-28
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Publication No.: US10326060B2Publication Date: 2019-06-18
- Inventor: Daisuke Iwakura
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan-shi
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan-shi
- Agency: Mori & Ward, LLP
- Priority: JP2016-150081 20160729
- Main IPC: H01L33/50
- IPC: H01L33/50 ; H01L33/46 ; H01L33/60 ; H01L33/62

Abstract:
A light emitting device includes a light emitting element to emit a first light having a first peak wavelength. A second wavelength converting member contains a second phosphor to convert the first light into a third light having a third peak wavelength longer than the first peak wavelength and shorter than a second peak wavelength. The second wavelength converting member includes a portion in which the second wavelength converting member has a first concentration of the second phosphor at a height of an upper surface of the light emitting element in a height direction and a second concentration of the second phosphor at a height of a lower surface of the light emitting element in the height direction. The second concentration is higher than the first concentration such that the second phosphor reflects the second light.
Public/Granted literature
- US20180033922A1 LIGHT EMITTING DEVICE AND THE MANUFACTURING METHOD FOR SAME Public/Granted day:2018-02-01
Information query
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