Improved white light source excited by purple light LED
A technology of white light source and purple light, which is applied in the field of phosphor materials, can solve the problems of poor luminous efficiency, insufficient stability and lack, etc., and achieve the effect of good white light intensity, high energy conversion efficiency and good durability
Inactive Publication Date: 2020-07-17
深圳市汉唐邦科技有限公司
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Problems solved by technology
[0008] In order to solve the above technical problems, the present invention provides an improved white light source excited by purple LEDs to solve the problem that the existing white light sources lack an effective light source that uses purple light to excite white light, and the luminous efficiency is poor and not stable enough
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[0042] as attached figure 1 As shown, the present invention provides an aluminum nitride-based phosphor powder for an improved white light source excited by a purple light LED, including the following components: europium-doped aluminum nitride-based red phosphor powder, terbium-doped aluminum nitride-based green phosphor powder and dysprosium-doped aluminum nitride-based blue phosphors, the europium-doped aluminum nitride-based red phosphors, terbium-doped aluminum nitride-based green phosphors and dysprosium-doped aluminum nitride-based blue phosphors The color phosphor is in a weight ratio of 1:0.5:0.5.
[0043] In the above embodiment, specifically, the preparation method of the aluminum nitride-based phosphor specifically includes the following steps:
[0044] S101: Weighing of Al and mixed materials;
[0045] S102: Tablet processing of Al and mixed materials;
[0046] S103: Ammonia gas treatment of the finished tablet;
[0047] S104: Nitrogen gas treatment of the fin...
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Abstract
The invention provides an improved white light source excited by a purple light LED. The improved white light source discloses a light source mounting base, an LED wafer, a silica gel filling body anda fluorescent powder body. The LED wafer is fixed on the light source mounting base, then, the light source mounting base is placed in the fluorescent powder body, the silica gel filling body is filled in the fluorescent powder body, and light emitted by the LED wafer is excited by the fluorescent powder body to generate white light. The white light source generated by the invention is excited bypurple light, so that the energy conversion efficiency is high, and the intensity of the emitted white light is good; according to the white light source manufactured in the invention, only one kindof fluorescent powder is needed, and the preparation process of the fluorescent powder is simple; the spectral accuracy and reproducibility of mass production are good; the manufacturing method is quite suitable for mass production of high-quality white light sources; and the light-emitting effect is high, the color temperature is adjustable, and the durability of the manufactured white-light LEDis good.
Description
technical field [0001] The invention belongs to the technical field of fluorescent powder materials, and in particular relates to an improved white light source excited by purple light LEDs. Background technique [0002] In 1996, Nichia Chemical Corporation of Japan developed a blue light-emitting diode, which excited phosphors to produce yellow light, and then mixed the light and color to produce high-brightness white light. In the age of lighting. It uses the blue light of the blue LED to irradiate a fluorescent substance to produce yellow light complementary to the blue light, and then uses the lens principle to mix the yellow light and blue light to make the human eye produce white light vision. However, the white light produced by this method will be uncomfortable to the naked eye for a long time due to its poor color rendering. [0003] At present, the main method of realizing white LED is to excite YAG yellow phosphor powder with blue LED chip. This method has the a...
Claims
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IPC IPC(8): H01L33/48H01L33/50C09K11/64F21K9/64
CPCC09K11/0883C09K11/7706C09K11/7734C09K11/7749F21K9/64H01L33/48H01L33/504H01L2933/0033H01L2933/0041Y02B20/00
Inventor 李达明吴明华
Owner 深圳市汉唐邦科技有限公司