Invention Publication
- Patent Title: Narrow-Band Red Photoluminescence Materials for Solid-State Light Emitting Devices and Filaments
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Application No.: US17983137Application Date: 2022-11-08
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Publication No.: US20230174862A1Publication Date: 2023-06-08
- Inventor: Yi-Qun Li
- Applicant: Intematix Corporation
- Applicant Address: US CA Fremont
- Assignee: Intematix Corporation
- Current Assignee: Intematix Corporation
- Current Assignee Address: US CA Fremont
- Main IPC: C09K11/88
- IPC: C09K11/88 ; F21K9/232 ; C09K11/61 ; C09K11/77 ; H01L33/50

Abstract:
Light emitting devices and LED-filaments comprise an excitation source (e.g. LED) and a photoluminescence material comprising a combination of a first narrow-band red photoluminescence material which generates light with a peak emission wavelength in a range 580 nm to 628 nm and a full width at half maximum emission intensity in a range 45 nm to 60 nm and a second narrow-band red photoluminescence material generates light with a peak emission wavelength in a range 628 nm to 640 nm and a full width at half maximum emission intensity in a range 5 nm to 20 nm. At least one of the first and second narrow-band red photoluminescence materials can comprise a narrow-band red phosphor or a quantum dot (QD) material.
Public/Granted literature
- US11781065B2 Narrow-band red photoluminescence materials for solid-state light emitting devices and filaments Public/Granted day:2023-10-10
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