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

A fluorescent powder and high color gamut technology, which is applied in the field of white LED backlight, can solve the problems of poor vividness and fidelity of the picture, cannot meet the process requirements, lack of red light components, etc., and achieve the effect of high vividness and fidelity

Inactive Publication Date: 2016-11-09
SHENZHEN LT OPTOELECTRONICS CO LTD
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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

Method used

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  • High-gamut fluorescent powder combination, white-light LED and fabrication method of white-light LED
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  • High-gamut fluorescent powder combination, white-light LED and fabrication method of white-light LED

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Embodiment Construction

[0018] In order to achieve the purpose of the present invention, the technical solutions and advantages are more clearly understood, and the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The first embodiment of the present invention provides a high color gamut phosphor combination, which includes red phosphors, green phosphors and yellow phosphors with a mass ratio of (1-4):(0.5-2):(0.5-2). Light phosphor, wherein, the red light phosphor is potassium fluorogermanate, and the yellow light phosphor is silicate.

[0020] Furthermore, the mass ratio of the red phosphor, the green phosphor and the yellow phosphor is (1-3):(0.5-1.5):(0.5-1.5). In some preferred embodiments of the present invention, the mass of the red phosphor, the gre...

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Abstract

The invention relates to the technical field of backlight of a white-light LED, in particular to a high-gamut fluorescent powder combination. The fluorescent powder combination comprises red-light fluorescent powder, green-light fluorescent powder and yellow-light fluorescent powder in mass ratio of (1-4):(0.5-2):(0.5-2), wherein the red-light fluorescent powder is potassium fluorogermanate, and the yellow-light fluorescent powder is silicate. The invention also provides the white-light LED. The white-light LED comprises fluorescent glue obtained by combining the above fluorescent powder. The invention further comprises a fabrication method of the white-light LED. The fabrication method comprises the following steps of weighing the above red-light fluorescent powder, the green-light fluorescent powder and the yellow-light fluorescent powder in mass ratio of (1-4):(0.5-2):(0.5-2), mixing the above fluorescent powder with a colloid to obtain the fluorescent glue, and further fabricating to obtain the required white-light LED by adopting the fluorescent glue. By the high-gamut fluorescent powder combination and the fabrication method of the white-light LED, a high-gamut white-light LED can be obtained, has the advantages of relatively high color saturation and is more realistic.

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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50C09K11/61
CPCC09K11/61H01L33/504H01L2933/0041Y02B20/00
Inventor 王磊
Owner SHENZHEN LT OPTOELECTRONICS CO LTD
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