High-colour-gamut fluorescent powder combination, white-light LED and preparation method of white-light LED

Abstract

The invention relates to the technical field of backlight of white-light LEDs, and in particular relates to a high-colour-gamut fluorescent powder combination. The fluorescent powder combination comprises red-light fluorescent powder, green-light fluorescent powder and yellow-light fluorescent powder, the mass ratio of which is (1-4):(0.5-2):(0.5-2), wherein the red-light fluorescent powder is potassium fluorogermanium; and the yellow-light fluorescent powder is yttrium aluminium garnet. The invention further provides a white-light LED; and the white-light LED comprises fluorescent glue prepared by the fluorescent powder combination. The invention further provides a preparation method of the white-light LED. The preparation method of the white-light LED comprises the following steps of: weighing the red-light fluorescent powder, the green-light fluorescent powder and the yellow-light fluorescent powder, the mass ratio of which is (1-4):(0.5-2):(0.5-2), mixing the fluorescent powder with a colloid to obtain the fluorescent glue, and further preparing the required white-light LED by adopting the fluorescent glue. By means of the high-colour-gamut fluorescent powder combination and the preparation method of the white-light LED disclosed by the invention, the high-colour-gamut white-light LED can be obtained; and the high-colour-gamut white-light LED has the advantages of being relatively high in colour saturation and more real.

Description

【Technical field】 [0001] The invention relates to the technical field of white LED backlights, in particular to a high color gamut fluorescent powder combination, a white LED and a preparation method thereof. 【Background technique】 [0002] At present, the market demand for white LED is increasing. Usually, the main implementation methods of white light LEDs are as follows: 1. Realize white light by mixing LED chips of red, green and blue primary colors. By packaging the chips of these three colors, the main advantage is good color rendering, but the cost is relatively high, and The light attenuation of the three color LED chips is different, which is prone to defects such as discoloration; 2. In order to make the color of LED products more perfect, the color degree is richer, and the color closer to the real world, many R&D technicians are committed to finding ways to improve LED products. The color gamut value, by using ultraviolet light or near ultraviolet to excite the ...

AI Technical Summary

Problems solved by technology

This solution is very efficient, but due to the lack of red light components, the spectrum is not wide enough, the fullness of the color is about 60%-70%, and the vividness and fidelity of the picture are poor, so it cannot meet the process of all color temperatures Requirements, so its application has certain limitations

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