Invention Grant
- Patent Title: Light emission device
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Application No.: US17885903Application Date: 2022-08-11
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Publication No.: US11929387B2Publication Date: 2024-03-12
- Inventor: 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: JP 19143125 2019.08.02
- Main IPC: H01L27/15
- IPC: H01L27/15 ; H01L33/48 ; H01L33/50 ; H01L33/60 ; H01L33/62

Abstract:
A light emission device includes: a wiring board; a plurality of light-emitting elements being disposed on the wiring board and electrically connected to a wiring layer of the wiring board; a first light diffusing member being disposed on the wiring board, the first light diffusing member having a plurality of throughholes and containing a light-diffusive material, each of the plurality of light-emitting elements being disposed in a corresponding one of the plurality of throughholes; a plurality of second light diffusing members covering the plurality of light-emitting elements and being disposed in the plurality of throughholes, each second light diffusing member containing a light-diffusive material, such that a content ratio of the light-diffusive material in each second light diffusing member is higher than a content ratio of the light-diffusive material in the first light diffusing member; and a wavelength converting member.
Public/Granted literature
- US20220384520A1 LIGHT EMISSION DEVICE Public/Granted day:2022-12-01
Information query
IPC分类: