A full-spectrum CSP package light source and its manufacturing method

Abstract

The invention provides a full-spectrum CSP packaging light source. A high-color temperature white CSP light source, a low-color temperature white CSP light source, a blue CSP light source, a green CSP light source and a red CSP light source are packaged on a packaging bracket at a certain number ratio; the high-color temperature white CSP light source and the low-color temperature white CSP light source can adjust a color temperature and the light emitting intensity as main light sources, and the blue CSP light source, the green CSP light source and the red CSP light source supplement a missing band as single-color light filling sources, so that the overall light source is high in saturability and the spectrum continuity is good. The high-color temperature white CSP light source and the low-color temperature white CSP light source are alternately packaged on the packaging bracket on the periphery of a light filling source region, so that the full-spectrum CSP packaging light source has a uniform light mixing characteristic in color temperature adjustment of the single-color light sources in the light filling source region or the high-color temperature white CSP light source and the low-color temperature white CSP light source, and has the advantages of a good light effect, excellent light quality and an adjustable color temperature.

Description

technical field [0001] The invention relates to the field of semiconductor lighting, in particular to a full-spectrum CSP (Chip Scale Package, that is, a point light source formed by chip-level packaging) package with adjustable color temperature, good spectral continuity, high saturation, uniform light mixing and excellent light quality. Light source and method of manufacture thereof. Background technique [0002] LED is a small and power-saving solid-state light source, known as green light source, which can be widely used in various general lighting and display fields, and in the field of LED applications, white light has the widest application range and demand It is also the largest, and because sunlight has the characteristics of a full spectrum, it is the key to giving people comfort and is generally accepted by the public, so the existing white light sources are biased towards light sources with a full spectrum. [0003] There are three main ways to form white light ...

AI Technical Summary

Problems solved by technology

[0004] The first is to excite yellow phosphor powder through a blue light chip. The spectrum of this method mainly includes blue light and yellow light, and other spectra lack more, such as figure 1 As shown, the traditional blue light chip plus phosphor powder mixed white light method, compared with the wave peak around 440nm, its spectrum in the 460-500nm blue light, 600-700nm red light and other bands is missing;

[0005] The second is achieved by mixing red, green, and blue light chips, but the bandwidth of each color light is quite narrow, and red light, blue light, and green light are superimposed to form a discontinuous spectrum, so that the full spectrum cannot be presented characteristics, and the luminous efficiency of the monochrome chip is low, and the color temperature is single;

But in this way, it is difficult to adjust the spectral characteristics after the phosphor powder is prepared, such as color temperature parameters

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