LED white lamp and encapsulation method thereof

Abstract

The invention discloses an LED white lamp and an encapsulation method thereof, and the method comprises the following steps: firstly providing a concave stacker and an LED blue light chip fixed in the concave stacker, wherein the LED blue light chip has a positive electric pole and a negative electric pole which can be energized; secondarily connecting the positive and negative electric poles of the LED blue light chip with the positive and negative electric poles of the concave stacker respectively; mixing glue, green phosphor powder of silicate with red phosphor powder of nitride to prepare phosphor glue; then encapsulating the phosphor glue on the surface of the LED blue light chip of the concave stacker, baking and molding; and finally stripping the molded product from the concave stacker and performing spectrophotometric color. The white light of the LED white lamp prepared according to the above method has three wave peaks of blue, green and red, thus satisfying tri-phosphor conditions, improving color gamut by over 20% compared with the traditional LED white light; and the LED white lamp serving as an LCD backlight has high saturation of image color and strong image layering.

Description

technical field [0001] The invention relates to a lamp and a packaging method thereof, in particular to an LED white lamp and a packaging method thereof. Background technique [0002] The application of LED white light as a new generation of liquid crystal backlight has become more and more widespread, but because the existing LED white light is made of blue chips and yellow phosphors, the white light color zone diagram only has two peaks, blue band and green band. ,like figure 1 As shown in the color gamut diagram, the white light produced in this way lacks the red spectrum, and the color gamut value is not high; or the existing LED white light uses ordinary wavelength blue chips and ordinary wavelength green phosphors and ordinary wavelength red phosphors Due to the unreasonable matching of wavelength bands, the produced white light has inconspicuous R, G, and B peaks and unbalanced ratios, so the color gamut value is not high, such as figure 2 The color gamut diagram i...

AI Technical Summary

Problems solved by technology

[0002] The application of LED white light as a new generation of liquid crystal backlight has become more and more widespread, but because the existing LED white light is made of blue chips and yellow phosphors, the white light color zone diagram only has two peaks, blue band and green band. ,like figure 1 As shown in the color gamut diagram, the white light produced in this way lacks the red spectrum, and the color gamut value is not high; or the existing LED white light uses ordinary wavelength blue chips and ordinary wavelength green phosphors and ordinary wavelength red phosphors Due to the unreasonable matching of wavelength bands, the produced white light has inconspicuous R, G, and B peaks and unbalanced ratios, so the color gamut value is not high, such as figure 2 As shown in the color gamut diagram

However, if the color gamut value is not high, it will cause disadvantages such as insufficient color saturation and poor layering of the picture when LED white light is used as LCD backlight.

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