Illuminating device containing fluorescent powder composition

Abstract

The invention discloses an illuminator with the phosphor powder combination. A phosphor powder layer is formed on a luminescent component through a wet-coating process or a dry-depositing process, the phosphor powder layer contains the phosphor powder layer combination with the dosage component ratio being evenly mixed and prepared, and through the microscopic photochromic mixing effect of the phosphor powder combination particle, the phosphor powder layer can convert various required luminescent frequency spectra according to the different frequency spectrum of the luminescent component, thereby the illuminator has the advantages of low cost, low power consumption, easy quantity production, uniform photochromic, no color cast and long service life.

Description

Technical field: [0001] The invention relates to a light-emitting device with a phosphor composition, in particular to a phosphor composition doped with any rare earth element and a substrate material, which can effectively improve its luminous efficiency. Background technique: [0002] At present, the global light emitting diode (Light Emitting Diode, LED) light source development trend is mainly based on white LED (white LED) and high-brightness light-emitting diodes. In today's era of environmental protection and high-priced energy, white light-emitting diodes are very important for power saving. Features such as thinness, lightness and small size are very urgent needs of the entire display technology and lighting technology at this stage. [0003] According to the materials currently used in making white light emitting diodes, they can be divided into organic light emitting diodes and inorganic light emitting diodes. At present, white light emitting devices of light-emi...

AI Technical Summary

Problems solved by technology

[0006] (1) Since blue light accounts for most of the luminous spectrum, there will be high and uneven color temperature;

[0007] (2) Because the light-emitting wavelength of the blue light-emitting diode will change as the temperature rises, it is difficult to control the color of the white light source; and

[0008] (3) Due to the weak red spectrum of light emission, the color rendition is poor

Although this mixed three-wavelength white light-emitting diode has the advantage of high color rendering, it has the disadvantage of insufficient luminous efficiency, and when using ultraviolet light-emitting diodes as a light source for exciting white light, the shorter the wavelength of ultraviolet light, the more harmful it is to the human eye. The damage is also greater, so it is still necessary to block the ultraviolet light in the structure of the white light emitting diode

[0010] To sum up the above, the current white light-emitting diodes are made of blue-light or ultraviolet light-emitting diodes and phosphors, and their common disadvantages are insufficient luminous brightness and difficulty in uniformity control.

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