Invention Grant
- Patent Title: Light-emitting unit and surface-emission light source
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Application No.: US16945046Application Date: 2020-07-31
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Publication No.: US11594665B2Publication Date: 2023-02-28
- Inventor: Takuya Nakabayashi , Toshinobu Katsumata , Noriaki Hiraide
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2019-143127 20190802,JPJP2020-019135 20200206,JPJP2020-074798 20200420,JPJP2020-126638 20200727
- Main IPC: H01L33/62
- IPC: H01L33/62 ; H01L27/15 ; H01L33/10 ; H01L33/60 ; H01L33/48 ; H01L33/50 ; H05K1/18

Abstract:
A light-emitting unit includes: a wiring board; light-emitting elements on the wiring board; a light reflecting member on the wiring board, the light reflecting member covering a lateral surface of each of the light-emitting elements; wavelength conversion layers each provided on or above an emission surface of a corresponding one of the plurality of light-emitting elements; light reflecting layers on the wavelength conversion layers, respectively; and a protecting layer configured to transmit light and provided on the light reflecting member. The light-transmitting protecting layer covers at least a lateral surface of the wavelength conversion layers and at least a lateral surfaces of the light reflecting layers. An upper surface of the protecting layer has a first recess in a region where the plurality of light reflecting layers are not present in a top view. The first recess includes at least one concave surface.
Public/Granted literature
- US20210036198A1 LIGHT-EMITTING UNIT AND SURFACE-EMISSION LIGHT SOURCE Public/Granted day:2021-02-04
Information query
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