Invention Grant
- Patent Title: White light emitting device
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Application No.: US17124246Application Date: 2020-12-16
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Publication No.: US11929353B2Publication Date: 2024-03-12
- Inventor: Hidesato Hisanaga , Tetsuya Kamada , Shigeo Hayashi , Takashi Kuwaharada
- Applicant: NUVOTON TECHNOLOGY CORPORATION JAPAN
- Applicant Address: JP Kyoto
- Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
- Current Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
- Current Assignee Address: JP Kyoto
- Agency: Rimon P.C.
- Priority: JP 18118277 2018.06.21
- Main IPC: H01L25/075
- IPC: H01L25/075 ; F21K9/00 ; H01L33/48 ; H01L33/50 ; H01L33/60 ; H01L33/62

Abstract:
A white light emitting device includes: first light-emitting units to which a first current is applied; and second light-emitting units to which a second current which is different from the first current is applied. When the first current is applied to the first light-emitting units and the second current is applied to the second light-emitting units, an average emission chromaticity of the first light-emitting units and an average emission chromaticity of the second light-emitting units are identical colors. When the same current is applied to both the first light-emitting units and the second light-emitting units, the average emission chromaticity of the first light-emitting units and the average emission chromaticity of the second light-emitting units are non-identical colors.
Public/Granted literature
- US20210104501A1 WHITE LIGHT EMITTING DEVICE Public/Granted day:2021-04-08
Information query
IPC分类: