Fluorescent mixture and light-emitting device thereof

A light-emitting device and phosphor technology, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as poor chemical stability, limited spectral coverage, long-term light decay of light-emitting devices, etc., and achieve the effect of protection
CN109545941AActive Publication Date: 2019-03-29JIANGSU BREE OPTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU BREE OPTRONICS CO LTD
Publication Date
2019-03-29

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Abstract

The invention provides a full-spectrum fluorescent mixture and a light-emitting device manufactured by using the same. The fluorescent mixture comprises blue fluorescent powder, green or green-yellowfluorescent powder, red fluorescent powder, and crimson or near-infrared fluorescent powder. A purple-light LED chip is selected for excitation; and a light spectrum of over 700nm in the fluorescent mixture is made up effectively and a natural-light-similar light spectrum is formed.
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Description

【Technical field】

[0001] The invention relates to a phosphor mixture for converting an LED light source, in particular to a phosphor mixture for converting a violet LED into a white light source for lighting applications and a light-emitting device thereof. 【Background technique】

[0002] At present, LED white light emitting devices are formed by combining blue LEDs to excite yellow phosphors. The phosphor absorbs a part of the radiated light of the LED and converts it into yellow for color mixing to emit white light. However, in the white color spectrum, the spectral radiation intensity of the blue-green and red parts cannot be fully obtained, which leads to the color reduction of the illuminated object. Poor, that is, the color rendering index is low.

[0003] CN 100477256C discloses a light-emitting device, which includes a 250nm-450nm semiconductor excitation light source and red, orange, green and blue phosphor materials, and obtains a full-spectrum light-emitting devi...

Claims

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