Invention Grant
- Patent Title: Narrow-band red photoluminescence materials for solid-state light emitting devices and filaments
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Application No.: US16628577Application Date: 2018-06-22
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Publication No.: US11492550B2Publication Date: 2022-11-08
- 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
- Agency: CrossPond Law
- International Application: PCT/US2018/038928 WO 20180622
- International Announcement: WO2019/005597 WO 20190103
- Main IPC: C09K11/88
- IPC: C09K11/88 ; F21K9/232 ; H01L33/50 ; C09K11/61 ; C09K11/77 ; F21Y115/10

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
- US20200270520A1 Narrow-Band Red Photoluminescence Materials for Solid-State Light Emitting Devices and Filaments Public/Granted day:2020-08-27
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