WO2020200327A1 - White light led and lamp for healthy lighting - Google Patents

White light led and lamp for healthy lighting Download PDF

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Publication number
WO2020200327A1
WO2020200327A1 PCT/CN2020/089160 CN2020089160W WO2020200327A1 WO 2020200327 A1 WO2020200327 A1 WO 2020200327A1 CN 2020089160 W CN2020089160 W CN 2020089160W WO 2020200327 A1 WO2020200327 A1 WO 2020200327A1
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WIPO (PCT)
Prior art keywords
phosphor
peak wavelength
activated
red
fluorescent material
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PCT/CN2020/089160
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French (fr)
Chinese (zh)
Inventor
陈磊
卢淑芬
赵文
林旺东
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旭宇光电（深圳）股份有限公司
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Publication of WO2020200327A1 publication Critical patent/WO2020200327A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502—Wavelength conversion materials
    • H01L33/504—Elements with two or more wavelength conversion materials

Definitions

  • the invention belongs to the technical field of semiconductor lighting, and specifically relates to a white light LED and a lamp for health lighting.
  • LED Light Emitting Diode
  • the LED lighting industry has gone from the pursuit of light efficiency, energy saving and cost to the demand for light quality, light health, photobiological safety and light environment.
  • the blue light hazards caused by LEDs, human rhythm disorders, and human eye retinal damage have become increasingly apparent, making the industry aware of the urgent need for the popularization of healthy lighting.
  • Short-wave blue light (430-450nm) has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiates the retina to produce free radicals, and these free radicals can cause the retinal pigment epithelial cells to die and the epithelial cells can lose nutrients to light-sensitive cells, which can cause vision damage, macular degeneration, and myopia.
  • the purpose of the present invention is to provide a white light LED and a lamp for health lighting, aiming to solve the technical problem that the short-wave blue light excitation in the existing white light LED is too strong, and the long-wave blue light excitation is low in quantum efficiency and light efficiency.
  • a white light LED comprising a blue chip and a fluorescent material excited by the blue chip, the blue chip has a peak wavelength of 470-480nm, and the fluorescent material includes a peak wavelength suitable for excitation at 470-480nm. 540nm-560nm yellow phosphor and red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm and red with a peak wavelength of 600-660nm Phosphor.
  • the present invention provides a white light LED which is excited by a blue chip with a peak wavelength of 470-480nm to excite fluorescent materials to achieve healthy lighting.
  • the blue chip has a longer peak wavelength and is less harmful than short-wave blue light.
  • the blue light hazard of the light source can reach the Rg0 standard and is located
  • the 470-480nm peak band can inhibit the secretion of melatonin, which is conducive to staying excited when studying and going to work.
  • the yellow phosphor with the peak wavelength at 540nm-560nm is matched with the red phosphor with the peak wavelength at 600-660nm.
  • the combination of a green phosphor with a peak wavelength of 500-540nm and a red phosphor with a peak wavelength of 600-660nm can show high quantum efficiency under excitation at 470-480nm, and can improve the LED's high index The light effect of white LED.
  • the lamp for health lighting includes the white LED of the present invention.
  • the health lighting lamp provided by the present invention is provided with the unique white light LED of the present invention. Therefore, the health lighting lamp shows high quantum efficiency, high light efficiency, and low light effect blue light harm, which is beneficial for studying and going to work to maintain an excited state. It has good applications in educational lighting and office lighting applications.
  • FIG. 1 is a schematic diagram of the structure of a white LED provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a white light LED, including a blue chip and a fluorescent material excited by the blue chip, the peak wavelength of the blue chip is 470-480 nm, and the fluorescent material includes a suitable 470-480 nm excitation Yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes a green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm and a green phosphor with a peak wavelength of 600 -660nm red phosphor.
  • the embodiment of the present invention provides a white light LED that uses a blue chip with a peak wavelength of 470-480 nm to excite fluorescent materials to achieve healthy lighting.
  • the blue chip has a longer peak wavelength and is less harmful than short-wave blue light.
  • the blue light hazard of the light source can reach the Rg0 standard.
  • the peak wavelength of 470-480nm can inhibit the secretion of melatonin, which is conducive to staying excited when studying and going to work.
  • the yellow phosphor with the peak wavelength of 540nm-560nm and the red phosphor with the peak wavelength of 600-660nm are Matching, or the combination of a green phosphor with a peak wavelength of 500-540nm and a red phosphor with a peak wavelength of 600-660nm, can show high quantum efficiency under excitation at 470-480nm, and under the condition of ensuring high LED display index, It can improve the light efficiency of white LED.
  • the fluorescent material in the white light LED may form a light-emitting layer, which is excited by the blue chip, that is, the blue LED chip.
  • the blue light chip may be located inside the package support, for example, fixed at the bottom of the package support, the light exit surface of the blue light chip faces upward, and the upper surface of the light exit surface of the blue light chip can be covered with the above fluorescent material to form a light emitting layer, the structure is as As shown in Figure 1 (the package bracket is not drawn).
  • the number of the blue light chip can be one or more; a certain distance can be allowed between the blue light chip and the light emitting layer, for example, the blue light chip and the light emitting layer are separated by a preset distance.
  • the luminescent material layer on the blue chip can be a planar structure or an arc structure.
  • the angle of the beam emitted from the optical device can be multiple angles, such as 15°, 30°, 60°, 120°, 150°, and so on.
  • the yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm when excited at 470-480nm, the above-mentioned yellow phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength
  • the color rendering index can be above 80.
  • the green phosphor with a peak wavelength of 500-540nm is matched with a red phosphor with a peak wavelength of 600-660nm.
  • the above-mentioned green phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength.
  • the index can be above 90.
  • the fluorescent material is composed of yellow phosphor with a peak wavelength of 540 nm-560 nm and a red phosphor with a peak wavelength of 600-660 nm. In another embodiment, the fluorescent material is composed of a green phosphor with a peak wavelength of 500-540 nm and a red phosphor with a peak wavelength of 600-660 nm.
  • the peak wavelength of the blue chip in the white light LED is preferably 475-480nm
  • the fluorescent material is composed of yellow phosphor with a peak wavelength of 540nm-550nm and a red phosphor with a peak wavelength of 610-630nm.
  • the peak wavelength of the blue chip in the white light LED is preferably 475-480 nm
  • the fluorescent material is composed of a green phosphor with a peak wavelength of 520-540 nm and a red phosphor with a peak wavelength of 610-630 nm.
  • the yellow phosphor is any of Ce 3+ activated aluminate phosphor and Ce 3+ activated nitride phosphor One;
  • the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor;
  • the yellow phosphor and red Phosphors have relatively high excitation efficiency under the excitation conditions of 470-480nm.
  • the mass ratio of the yellow phosphor and the red phosphor in the fluorescent material is 1: (0.1-0.5).
  • the color temperature of the white LED can be controlled in the range of 2000K-6500K.
  • the yellow phosphor is Ce 3+ activated aluminate phosphor
  • the Ce 3+ activated aluminate phosphor is selected from Y 3 Al 5 O 12 :Ce 3+ , (Y,Lu) 3 Al 5 O 12 :Ce 3+ and Y 3 (Al,Ga) 5 O 12 :Ce 3+
  • the yellow phosphor is Ce 3+ activated Nitride phosphor
  • the Ce 3+ activated nitride phosphor is selected from La 3 Si 6 N 11 : Ce 3+ , Y 3 Si 6 N 11 : Ce 3+ , Lu 3 Si 6 N 11 : Ce 3+ , (La,Lu) 3 Si 6 N 11 :Ce 3+, and (La,Y) 3 Si 6 N 11 :Ce 3+ .
  • the red phosphor is a nitride phosphor activated by Eu 2+
  • the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+
  • the red phosphor is an Eu 3+ activated oxide phosphor
  • the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+
  • the red phosphor is Mn 4+ activated fluoride phosphor
  • the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 (Si,Ge)F 6 : Mn 4+ at least one kind.
  • the fluorescent material in the white light LED is composed of yellow fluorescent powder and red fluorescent powder
  • the yellow fluorescent powder is La 3 Si 6 N 11 :Ce 3+
  • the red fluorescent powder is (Y, Gd)(W,P)O 4 :Eu 3+ .
  • the fluorescent material in the white light LED is composed of green fluorescent powder and red fluorescent powder
  • the green fluorescent powder is any of Eu 2+ activated oxynitride fluorescent powder and Eu 2+ activated sulfide fluorescent powder One
  • the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor
  • the above-mentioned green phosphor and red The phosphor has a better excitation effect at 470-480nm, and its luminous efficiency is higher when the white LED is packaged.
  • the mass ratio of the green phosphor and the red phosphor in the fluorescent material is 1: (0.05-0.5).
  • the color temperature of the white LED can be controlled in the range of 2000K-6500K.
  • the green phosphor is Eu 2+ activated oxynitride phosphor, and the Eu 2+ activated oxynitride phosphor is selected from ⁇ -Sialon:Eu 2+ ;
  • the green phosphor is Eu 2+ activated sulfide phosphor, and the Eu 2+ activated sulfide phosphor is selected from SrGa 2 S 4 :Eu 2+ and SrAl 2 S 4 :Eu 2+ At least one of.
  • the red phosphor is a nitride phosphor activated by Eu 2+
  • the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+
  • the red phosphor is an Eu 3+ activated oxide phosphor
  • the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+
  • the red phosphor is Mn 4+ activated fluoride phosphor
  • the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 (Si,Ge)F 6 : Mn 4+ at least one kind.
  • the green phosphor is ⁇ -Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+
  • the red phosphor is (Y,Gd)(W,P)O 4 : Eu 3+
  • the green phosphor is ⁇ -Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+ which has high excitation efficiency at 470-480nm
  • an embodiment of the present invention also provides a health lighting lamp, and the health lighting lamp includes the white LED described in the embodiment of the present invention.
  • the white light LED provided in the health lighting lamp of the embodiment of the present invention includes a blue chip and a fluorescent material excited by the blue chip, the peak wavelength of the blue chip is 470-480 nm, and the fluorescent material includes Suitable for excitation at 470-480nm, a yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes a green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm And the red phosphor with peak wavelength at 600-660nm.
  • the fluorescent material selection of the white light LED in this health lighting fixture please refer to the detailed description above.
  • the health lighting lamp provided by the embodiment of the present invention is provided with the white light LED unique to the embodiment of the present invention. Therefore, the health lighting lamp shows high quantum efficiency, high luminous efficiency, and low blue light damage of the luminous efficiency, which is conducive to study and work. Stay excited and have good applications in educational lighting and office lighting applications.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is La 3 Si 6 N 11 :Ce 3+ and the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ and the peak wavelength is between 620-630nm; yellow
  • the mass ratio of phosphor to red phosphor is 1:0.2.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , and the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , and the peak wavelength is between 620-630nm; yellow
  • the mass ratio of phosphor to red phosphor is 1:0.22.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is Lu 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm; yellow fluorescence
  • the mass ratio of pink to red phosphor is 1:0.25.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is (Y,Lu) 3 Al 5 O 12 :Ce 3+ with peak wavelength between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ with peak wavelength Located between 620-630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.34.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is Y 3 Al 5 O 12 : Ce 3+ , and the peak wavelength is between 545-550 nm; the red phosphor is K 2 SiF 6 : Mn 4+ , and the peak wavelength is between 620-630 nm; the yellow phosphor is with The mass ratio of the red phosphor is 1:0.34.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is (La,Y) 3 Si 6 N 11 : Ce 3+ , and the peak wavelength is between 545-550 nm; the red phosphor is K 2 GeF 6 : Mn 4+ , and the peak wavelength is between 620-630 nm;
  • the mass ratio of yellow phosphor to red phosphor is 1:0.35.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm ;
  • the mass ratio of yellow phosphor to red phosphor is 1:0.34.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is La 3 Si 6 N 11 :Ce 3+ and the peak wavelength is between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is at 620- Between 630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.36.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is 475-480 nm
  • the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder.
  • the yellow phosphor is (La,Lu) 3 Si 6 N 11 :Ce, the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm ;
  • the mass ratio of yellow phosphor to red phosphor is 1:0.24.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is ⁇ -Sialon:Eu 2+ with a peak wavelength between 520-540nm
  • the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ with a peak wavelength between 620-630nm
  • the green phosphor is with The mass ratio of red phosphor is 1:0.26.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the green phosphor
  • the mass ratio with the red phosphor is 1:0.26.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrAl 2 S 4 :Eu 2+ , and the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , and the peak wavelength is between 620-630nm; the green phosphor is compatible with The mass ratio of red phosphor is 1:0.23.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm;; the green phosphor
  • the mass ratio with the red phosphor is 1:0.25.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ and the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is between 620-630nm
  • the mass ratio of green phosphor to red phosphor is 1:0.34.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ , and the peak wavelength is between 520-540nm; the red phosphor is K 2 SiF 6 :Mn 4+ , and the peak wavelength is between 620-630nm; the green phosphor and red fluorescence
  • the mass ratio of powder is 1:0.35.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 GeF 6 :Mn 4+ , the peak wavelength is between 620-630nm; the green phosphor and red fluorescence
  • the mass ratio of powder is 1:0.37.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm; green
  • the mass ratio of phosphor to red phosphor is 1:0.38.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is located at 475-480 nm
  • the fluorescent material is a combination of green fluorescent powder and red fluorescent powder.
  • the green phosphor is ⁇ -Sialon:Eu 2+ and the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is between 620-630nm ;
  • the mass ratio of green phosphor to red phosphor is 1:0.36.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is La 3 Si 6 N 11 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is Y 3 Si 6 N 11 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is Lu 3 Si 6 N 11 : Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is (La,Lu) 3 Si 6 N 11 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is (La, Y) 3 Si 6 N 11 : Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is Y 3 Al 5 O 12 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is (Y,Lu) 3 Al 5 O 12 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • a white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip.
  • the peak wavelength of the chip is between 475-480 nm
  • the fluorescent material is Y 3 (Al,Ga) 5 O 12 :Ce 3+ yellow phosphor
  • the peak wavelength is between 545-555 nm.
  • the color rendering index and color temperature are shown in Table 1.
  • Table 1 shows the performance test results of the white LEDs in the above embodiments and comparative examples.

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Abstract

The present application relates to the technical field of semiconductor lighting, and specifically relates to a white light LED and a lamp for healthy lighting. The white light LED comprises a blue light chip and a fluorescent material stimulated by the blue light chip. The peak wavelength of the blue light chip is 470 to 480 nm. The fluorescent material comprises a yellow fluorescent powder having a peak wavelength between 540 nm and 560 nm and a red fluorescent powder having a peak wavelength between 600 nm and 660 nm, both being suitable for 470 to 480 nm stimulation. Or, the fluorescent material comprises a green fluorescent powder having a peak wavelength between 500 nm and 540 nm and a red fluorescent powder having a peak wavelength between 600 nm and 660 nm, both being suitable for 470 to 480 nm stimulation. The white light LED causes low blue light damage, exhibits high quantum efficiency under 470 to 480 nm stimulation, and can enhance white light LED luminous efficacy while guaranteeing a high LED color rendering index.

Description

白光LED和健康照明用灯具White LED and health lighting lamps 技术领域Technical field
本发明属于半导体照明技术领域，具体涉及一种白光LED和健康照明用灯具。The invention belongs to the technical field of semiconductor lighting, and specifically relates to a white light LED and a lamp for health lighting.
背景技术Background technique
随着发光二极管（Light Emitting Diode，LED）的快速发展，LED照明行业已经从对光效、节能和成本的追求，上升到对光品质、光健康、光生物安全和光环境的需求。尤其是近年LED造成的蓝光危害、人体节律紊乱、人眼视网膜损害的问题日渐显现，使行业意识到健康照明的普及刻不容缓。With the rapid development of Light Emitting Diode (LED), the LED lighting industry has gone from the pursuit of light efficiency, energy saving and cost to the demand for light quality, light health, photobiological safety and light environment. Especially in recent years, the blue light hazards caused by LEDs, human rhythm disorders, and human eye retinal damage have become increasingly apparent, making the industry aware of the urgent need for the popularization of healthy lighting.
短波蓝光（430-450nm）具有极高能量，能够穿透晶状体直达视网膜。蓝光照射视网膜会产生自由基，而这些自由基会导致视网膜色素上皮细胞衰亡，上皮细胞的衰亡会导致光敏感细胞缺少养分从而引起视力损伤，造成黄斑病变，进而容易导致近视。Short-wave blue light (430-450nm) has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiates the retina to produce free radicals, and these free radicals can cause the retinal pigment epithelial cells to die and the epithelial cells can lose nutrients to light-sensitive cells, which can cause vision damage, macular degeneration, and myopia.
在教育照明及办公照明应用领域中，开发一款长波蓝光激发荧光粉实现白光的LED，减少蓝光危害并能适度抑制褪黑素分泌具有十分重要的意义。但现有荧光粉方案中，长波激发下，量子效率太低，不宜产业化应用；因此，现有技术有待改进。In the field of education lighting and office lighting applications, it is of great significance to develop a long-wave blue LED that excites phosphors to achieve white light, which reduces the harm of blue light and moderately inhibits the secretion of melatonin. However, in the existing phosphor solution, under long-wave excitation, the quantum efficiency is too low and it is not suitable for industrial application; therefore, the existing technology needs to be improved.
技术问题technical problem
本发明的目的在于提供一种白光LED和健康照明用灯具，旨在解决现有白光LED中短波蓝光激发太强，而长波蓝光激发的量子效率和光效低的技术问题。The purpose of the present invention is to provide a white light LED and a lamp for health lighting, aiming to solve the technical problem that the short-wave blue light excitation in the existing white light LED is too strong, and the long-wave blue light excitation is low in quantum efficiency and light efficiency.
技术解决方案Technical solutions
为实现上述发明目的，本发明采用的技术方案如下：In order to achieve the above-mentioned purpose of the invention, the technical solutions adopted by the present invention are as follows:
本发明一方面提供一种白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。One aspect of the present invention provides a white light LED, comprising a blue chip and a fluorescent material excited by the blue chip, the blue chip has a peak wavelength of 470-480nm, and the fluorescent material includes a peak wavelength suitable for excitation at 470-480nm. 540nm-560nm yellow phosphor and red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm and red with a peak wavelength of 600-660nm Phosphor.
本发明提供一种由峰值波长为470-480nm的蓝光芯片激发荧光材料实现健康照明的白光LED，其中蓝光芯片峰值波长较长，相比短波蓝光危害低，光源蓝光危害能够达到Rg0标准，且位于470-480nm峰值波段能够抑制褪黑素的分泌，有利于学习和上班能够保持兴奋状态，而荧光材料中峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，或者峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，能够在470-480nm激发下显示出高量子效率，而且在保证LED高显指的条件下，能够提升白光LED的光效。The present invention provides a white light LED which is excited by a blue chip with a peak wavelength of 470-480nm to excite fluorescent materials to achieve healthy lighting. The blue chip has a longer peak wavelength and is less harmful than short-wave blue light. The blue light hazard of the light source can reach the Rg0 standard and is located The 470-480nm peak band can inhibit the secretion of melatonin, which is conducive to staying excited when studying and going to work. In the fluorescent material, the yellow phosphor with the peak wavelength at 540nm-560nm is matched with the red phosphor with the peak wavelength at 600-660nm. Or the combination of a green phosphor with a peak wavelength of 500-540nm and a red phosphor with a peak wavelength of 600-660nm can show high quantum efficiency under excitation at 470-480nm, and can improve the LED's high index The light effect of white LED.
本发明另一方面提供一种健康照明用灯具，所述健康照明用灯具包括本发明所述的白光LED。Another aspect of the present invention provides a lamp for health lighting. The lamp for health lighting includes the white LED of the present invention.
有益效果Beneficial effect
本发明提供的健康照明用灯具设置有本发明特有的白光LED，因此该健康照明用灯具显示出高量子效率，光效高，而且光效蓝光危害低，有利于学习和上班能够保持兴奋状态，在教育照明及办公照明应用领域具有很好的应用。The health lighting lamp provided by the present invention is provided with the unique white light LED of the present invention. Therefore, the health lighting lamp shows high quantum efficiency, high light efficiency, and low light effect blue light harm, which is beneficial for studying and going to work to maintain an excited state. It has good applications in educational lighting and office lighting applications.
附图说明Description of the drawings
图1为本发明实施例提供的白光LED的结构示意图。FIG. 1 is a schematic diagram of the structure of a white LED provided by an embodiment of the present invention.
本发明的实施方式Embodiments of the invention
为了使本发明要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
一方面，本发明实施例提供了一种白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。On the one hand, an embodiment of the present invention provides a white light LED, including a blue chip and a fluorescent material excited by the blue chip, the peak wavelength of the blue chip is 470-480 nm, and the fluorescent material includes a suitable 470-480 nm excitation Yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes a green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm and a green phosphor with a peak wavelength of 600 -660nm red phosphor.
本发明实施例提供一种由峰值波长为470-480nm的蓝光芯片激发荧光材料实现健康照明的白光LED，其中蓝光芯片峰值波长较长，相比短波蓝光危害低，光源蓝光危害能够达到Rg0标准，且位于470-480nm峰值波段能够抑制褪黑素的分泌，有利于学习和上班能够保持兴奋状态，而荧光材料中峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，或者峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，能够在470-480nm激发下显示出高量子效率，而且在保证LED高显指的条件下，能够提升白光LED的光效。The embodiment of the present invention provides a white light LED that uses a blue chip with a peak wavelength of 470-480 nm to excite fluorescent materials to achieve healthy lighting. The blue chip has a longer peak wavelength and is less harmful than short-wave blue light. The blue light hazard of the light source can reach the Rg0 standard. And the peak wavelength of 470-480nm can inhibit the secretion of melatonin, which is conducive to staying excited when studying and going to work. In the fluorescent material, the yellow phosphor with the peak wavelength of 540nm-560nm and the red phosphor with the peak wavelength of 600-660nm are Matching, or the combination of a green phosphor with a peak wavelength of 500-540nm and a red phosphor with a peak wavelength of 600-660nm, can show high quantum efficiency under excitation at 470-480nm, and under the condition of ensuring high LED display index, It can improve the light efficiency of white LED.
在一实施例中，该白光LED中的荧光材料可以形成一发光层，被蓝光芯片即蓝光LED芯片激发。所述蓝光芯片可以位于封装支架内部，例如，固定在封装支架的底部，所述蓝光芯片的出光面朝向上方，在蓝光芯片的出光面的上表面可以覆盖上述荧光材料形成发光层，结构如图1所示（封装支架未画）。另外，所述蓝光芯片的个数可以是1个还可以是多个；蓝光芯片和发光层之间可以允许留有一段距离，例如，蓝光芯片和发光层之间相距预设距离，预设距离可以为范围值，蓝光芯片和发光层之间还可以设置其它结构或者材料层。作为其中一个示例，所述蓝光芯片上的发光材料层可以为平面结构，也可以为弧形结构。从光学装置中发出的光束角度可以是多个角度，如15°、30°、60°、120°、150°等等。In an embodiment, the fluorescent material in the white light LED may form a light-emitting layer, which is excited by the blue chip, that is, the blue LED chip. The blue light chip may be located inside the package support, for example, fixed at the bottom of the package support, the light exit surface of the blue light chip faces upward, and the upper surface of the light exit surface of the blue light chip can be covered with the above fluorescent material to form a light emitting layer, the structure is as As shown in Figure 1 (the package bracket is not drawn). In addition, the number of the blue light chip can be one or more; a certain distance can be allowed between the blue light chip and the light emitting layer, for example, the blue light chip and the light emitting layer are separated by a preset distance. It can be a range value, and other structures or material layers can be provided between the blue chip and the light-emitting layer. As an example, the luminescent material layer on the blue chip can be a planar structure or an arc structure. The angle of the beam emitted from the optical device can be multiple angles, such as 15°, 30°, 60°, 120°, 150°, and so on.
具体地，对于峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，当470-480nm激发时，上述特有峰值波长的黄色荧光粉搭配特有峰值波长的红色荧光粉其显色指数能够做到80以上。而峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，当470-480nm激发时，上述特有峰值波长的绿色荧光粉搭配特有峰值波长的红色荧光粉其显色指数能够做到90以上。Specifically, for the yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm, when excited at 470-480nm, the above-mentioned yellow phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength The color rendering index can be above 80. The green phosphor with a peak wavelength of 500-540nm is matched with a red phosphor with a peak wavelength of 600-660nm. When excited at 470-480nm, the above-mentioned green phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength. The index can be above 90.
在一实施例中，所述荧光材料由峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。在另一实施例中，所述荧光材料由峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。In one embodiment, the fluorescent material is composed of yellow phosphor with a peak wavelength of 540 nm-560 nm and a red phosphor with a peak wavelength of 600-660 nm. In another embodiment, the fluorescent material is composed of a green phosphor with a peak wavelength of 500-540 nm and a red phosphor with a peak wavelength of 600-660 nm.
更进一步，该白光LED中蓝光芯片的峰值波长优选为475-480nm，而荧光材料由峰值波长位于540nm-550nm的黄色荧光粉和峰值波长位于610-630nm的红色荧光粉组成。或者，该白光LED中蓝光芯片的峰值波长优选为475-480nm，而荧光材料由峰值波长位于520-540nm的绿色荧光粉和峰值波长位于610-630nm的红色荧光粉组成。Furthermore, the peak wavelength of the blue chip in the white light LED is preferably 475-480nm, and the fluorescent material is composed of yellow phosphor with a peak wavelength of 540nm-550nm and a red phosphor with a peak wavelength of 610-630nm. Alternatively, the peak wavelength of the blue chip in the white light LED is preferably 475-480 nm, and the fluorescent material is composed of a green phosphor with a peak wavelength of 520-540 nm and a red phosphor with a peak wavelength of 610-630 nm.
在白光LED中的荧光材料由黄色荧光粉和红色荧光粉组成的实施例中，所述黄色荧光粉为Ce 3+激活的铝酸盐荧光粉和Ce 3+激活的氮化物荧光粉中的任意一种；所述红色荧光粉为Eu 2+激活的氮化物荧光粉、Eu 3+激活的氧化物荧光粉和Mn 4+激活的氟化物荧光粉中的任意一种；上述黄色荧光粉和红色荧光粉在470-480nm激发条件下，其激发效率相对较高。 In the embodiment in which the fluorescent material in the white LED is composed of yellow phosphor and red phosphor, the yellow phosphor is any of Ce 3+ activated aluminate phosphor and Ce 3+ activated nitride phosphor One; the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; the yellow phosphor and red Phosphors have relatively high excitation efficiency under the excitation conditions of 470-480nm.
在一实施例中，所述荧光材料中的黄色荧光粉和红色荧光粉的质量比为1：（0.1~0.5）。上述黄色荧光粉和红色荧光粉的质量比范围内，能够实现该白光LED的色温控制在2000K-6500K范围内。In one embodiment, the mass ratio of the yellow phosphor and the red phosphor in the fluorescent material is 1: (0.1-0.5). Within the range of the mass ratio of the yellow phosphor and the red phosphor, the color temperature of the white LED can be controlled in the range of 2000K-6500K.
对于上述黄色荧光粉和红色荧光粉：所述黄色荧光粉为Ce 3+激活的铝酸盐荧光粉，且所述Ce 3+激活的铝酸盐荧光粉选自Y 3Al 5O 12:Ce 3+、(Y,Lu) 3Al 5O 12:Ce 3+和Y 3(Al,Ga) 5O 12:Ce 3+中的至少一种；或者，所述黄色荧光粉为Ce 3+激活的氮化物荧光粉，且所述Ce 3+激活的氮化物荧光粉选自La 3Si 6N 11:Ce 3+、Y 3Si 6N 11:Ce 3+、Lu 3Si 6N 11:Ce 3+、(La,Lu) 3Si 6N 11:Ce 3+和(La,Y) 3Si 6N 11:Ce 3+的任一种。而所述红色荧光粉为Eu 2+激活的氮化物荧光粉，且所述Eu 2+激活的氮化物荧光粉选自Sr 2Si 5N 8:Eu 2+、CaAlSiN 3:Eu 2+和(Sr,Ca)AlSiN 3:Eu 2+中的至少一种；或者，所述红色荧光粉为Eu 3+激活的氧化物荧光粉，且所述Eu 3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O 4:Eu 3+；或者，所述红色荧光粉为Mn 4+激活的氟化物荧光粉，且所述Mn 4+激活的氟化物荧光粉选自K 2SiF 6:Mn 4+、K 2GeF 6:Mn 4+和K 2(Si,Ge)F 6:Mn 4+中的至少一种。 For the above-mentioned yellow phosphor and red phosphor: the yellow phosphor is Ce 3+ activated aluminate phosphor, and the Ce 3+ activated aluminate phosphor is selected from Y 3 Al 5 O 12 :Ce 3+ , (Y,Lu) 3 Al 5 O 12 :Ce 3+ and Y 3 (Al,Ga) 5 O 12 :Ce 3+ ; or, the yellow phosphor is Ce 3+ activated Nitride phosphor, and the Ce 3+ activated nitride phosphor is selected from La 3 Si 6 N 11 : Ce 3+ , Y 3 Si 6 N 11 : Ce 3+ , Lu 3 Si 6 N 11 : Ce 3+ , (La,Lu) 3 Si 6 N 11 :Ce 3+, and (La,Y) 3 Si 6 N 11 :Ce 3+ . The red phosphor is a nitride phosphor activated by Eu 2+ , and the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+ ; or, the red phosphor is an Eu 3+ activated oxide phosphor, and the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+ ; or, the red phosphor is Mn 4+ activated fluoride phosphor, and the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 (Si,Ge)F 6 : Mn 4+ at least one kind.
在一优选实施例中，白光LED中的荧光材料由黄色荧光粉和红色荧光粉组成，所述黄色荧光粉为La 3Si 6N 11:Ce 3+，且所述红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+。采用La 3Si 6N 11:Ce 3+黄色荧光粉和(Y,Gd)(W,P)O 4:Eu 3+红色荧光粉进行组合搭配，其激发效率在470nm和480nm处较现有铝酸盐黄粉和氮化物红粉高，能够实现白光LED高光效方案。 In a preferred embodiment, the fluorescent material in the white light LED is composed of yellow fluorescent powder and red fluorescent powder, the yellow fluorescent powder is La 3 Si 6 N 11 :Ce 3+ , and the red fluorescent powder is (Y, Gd)(W,P)O 4 :Eu 3+ . Using La 3 Si 6 N 11 : Ce 3+ yellow phosphor and (Y, Gd) (W, P) O 4 : Eu 3+ red phosphor for combination, its excitation efficiency is better than existing aluminum at 470nm and 480nm The salt yellow powder and nitride red powder are high, which can realize the high luminous efficiency scheme of white LED.
在白光LED中的荧光材料由绿色荧光粉和红色荧光粉组成的实施例中，所述绿色荧光粉为Eu 2+激活的氮氧化物荧光粉和Eu 2+激活的硫化物荧光粉中的任意一种；所述红色荧光粉为Eu 2+激活的氮化物荧光粉、Eu 3+激活的氧化物荧光粉和Mn 4+激活的氟化物荧光粉中的任意一种；上述绿色荧光粉和红色荧光粉在在470-480nm处的激发效果更好，封装白光LED时其光效更高。 In the embodiment where the fluorescent material in the white light LED is composed of green fluorescent powder and red fluorescent powder, the green fluorescent powder is any of Eu 2+ activated oxynitride fluorescent powder and Eu 2+ activated sulfide fluorescent powder One; the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; the above-mentioned green phosphor and red The phosphor has a better excitation effect at 470-480nm, and its luminous efficiency is higher when the white LED is packaged.
在一实施例中，所述荧光材料中的绿色荧光粉和红色荧光粉的质量比为1：（0.05~0.5）。上述绿色荧光粉和红色荧光粉的质量比范围内，能够实现该白光LED的色温控制在2000K-6500K范围内。In one embodiment, the mass ratio of the green phosphor and the red phosphor in the fluorescent material is 1: (0.05-0.5). Within the range of the mass ratio of the green phosphor and the red phosphor, the color temperature of the white LED can be controlled in the range of 2000K-6500K.
对于上述绿色荧光粉和红色荧光粉：所述绿色荧光粉为Eu 2+激活的氮氧化物荧光粉，且所述Eu 2+激活的氮氧化物荧光粉选自β-Sialon:Eu 2+；或者，所述绿色荧光粉为Eu 2+激活的硫化物荧光粉，且所述Eu 2+激活的硫化物荧光粉选自SrGa 2S 4:Eu 2+和SrAl 2S 4:Eu 2+中的至少一种。而所述红色荧光粉为Eu 2+激活的氮化物荧光粉，且所述Eu 2+激活的氮化物荧光粉选自Sr 2Si 5N 8:Eu 2+、CaAlSiN 3:Eu 2+和(Sr,Ca)AlSiN 3:Eu 2+中的至少一种；或者，所述红色荧光粉为Eu 3+激活的氧化物荧光粉，且所述Eu 3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O 4:Eu 3+；或者，所述红色荧光粉为Mn 4+激活的氟化物荧光粉，且所述Mn 4+激活的氟化物荧光粉选自K 2SiF 6:Mn 4+、K 2GeF 6:Mn 4+和K 2(Si,Ge)F 6:Mn 4+中的至少一种。 For the above-mentioned green phosphor and red phosphor: the green phosphor is Eu 2+ activated oxynitride phosphor, and the Eu 2+ activated oxynitride phosphor is selected from β-Sialon:Eu 2+ ; Alternatively, the green phosphor is Eu 2+ activated sulfide phosphor, and the Eu 2+ activated sulfide phosphor is selected from SrGa 2 S 4 :Eu 2+ and SrAl 2 S 4 :Eu 2+ At least one of. The red phosphor is a nitride phosphor activated by Eu 2+ , and the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+ ; or, the red phosphor is an Eu 3+ activated oxide phosphor, and the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+ ; or, the red phosphor is Mn 4+ activated fluoride phosphor, and the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 (Si,Ge)F 6 : Mn 4+ at least one kind.
在一优选实施例中，所述绿色荧光粉为β-Sialon:Eu 2+或SrGa 2S 4:Eu 2+，且所述红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+。绿色荧光粉为β-Sialon:Eu 2+或SrGa 2S 4:Eu 2+的在470-480nm均具备较高的激发效率，和红色荧光粉(Y,Gd)(W,P)O 4:Eu 3+搭配，封装白光LED光效更高。 In a preferred embodiment, the green phosphor is β-Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+ , and the red phosphor is (Y,Gd)(W,P)O 4 : Eu 3+ . The green phosphor is β-Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+ which has high excitation efficiency at 470-480nm, and the red phosphor (Y, Gd) (W, P) O 4 : With Eu 3+ , the luminous efficiency of the packaged white LED is higher.
另一方面，本发明实施例还提供了一种健康照明用灯具，所述健康照明用灯具包括本发明实施例所述的白光LED。On the other hand, an embodiment of the present invention also provides a health lighting lamp, and the health lighting lamp includes the white LED described in the embodiment of the present invention.
具体地，本发明实施例的所述健康照明用灯具中设置的白光LED包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。该健康照明用灯具中，白光LED的荧光材料选择参见上文的详细阐述。Specifically, the white light LED provided in the health lighting lamp of the embodiment of the present invention includes a blue chip and a fluorescent material excited by the blue chip, the peak wavelength of the blue chip is 470-480 nm, and the fluorescent material includes Suitable for excitation at 470-480nm, a yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes a green phosphor with a peak wavelength of 500-540nm suitable for excitation at 470-480nm And the red phosphor with peak wavelength at 600-660nm. For the fluorescent material selection of the white light LED in this health lighting fixture, please refer to the detailed description above.
本发明实施例提供的健康照明用灯具设置有本发明实施例特有的白光LED，因此该健康照明用灯具显示出高量子效率，光效高，而且光效蓝光危害低，有利于学习和上班能够保持兴奋状态，在教育照明及办公照明应用领域具有很好的应用。The health lighting lamp provided by the embodiment of the present invention is provided with the white light LED unique to the embodiment of the present invention. Therefore, the health lighting lamp shows high quantum efficiency, high luminous efficiency, and low blue light damage of the luminous efficiency, which is conducive to study and work. Stay excited and have good applications in educational lighting and office lighting applications.
本发明先后进行过多次试验，现举一部分试验结果作为参考对发明进行进一步详细描述，下面结合具体实施例进行详细说明。The present invention has been tested for many times. A part of the test results will be used as a reference to further describe the invention in detail, and the following will be described in detail with reference to specific examples.
实施例1Example 1
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为La 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为（Sr,Ca）AlSiN 3:Eu 2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.2。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is La 3 Si 6 N 11 :Ce 3+ and the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ and the peak wavelength is between 620-630nm; yellow The mass ratio of phosphor to red phosphor is 1:0.2. The color rendering index and color temperature are shown in Table 1.
实施例2Example 2
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为（Sr,Ca）AlSiN 3:Eu 2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.22。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , and the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , and the peak wavelength is between 620-630nm; yellow The mass ratio of phosphor to red phosphor is 1:0.22. The color rendering index and color temperature are shown in Table 1.
实施例3Example 3
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Lu 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为Sr 2Si 5N 8:Eu 2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.25。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is Lu 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm; yellow fluorescence The mass ratio of pink to red phosphor is 1:0.25. The color rendering index and color temperature are shown in Table 1.
实施例4Example 4
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(Y,Lu) 3Al 5O 12:Ce 3+峰值波长位于545-550nm之间；红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is (Y,Lu) 3 Al 5 O 12 :Ce 3+ with peak wavelength between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ with peak wavelength Located between 620-630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.34. The color rendering index and color temperature are shown in Table 1.
实施例5Example 5
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y 3Al 5O 12:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为K 2SiF 6:Mn 4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is Y 3 Al 5 O 12 : Ce 3+ , and the peak wavelength is between 545-550 nm; the red phosphor is K 2 SiF 6 : Mn 4+ , and the peak wavelength is between 620-630 nm; the yellow phosphor is with The mass ratio of the red phosphor is 1:0.34. The color rendering index and color temperature are shown in Table 1.
实施例6Example 6
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(La,Y) 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为K 2GeF 6:Mn 4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.35。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is (La,Y) 3 Si 6 N 11 : Ce 3+ , and the peak wavelength is between 545-550 nm; the red phosphor is K 2 GeF 6 : Mn 4+ , and the peak wavelength is between 620-630 nm; The mass ratio of yellow phosphor to red phosphor is 1:0.35. The color rendering index and color temperature are shown in Table 1.
实施例7Example 7
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为K 2(Si,Ge)F 6:Mn 4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm ; The mass ratio of yellow phosphor to red phosphor is 1:0.34. The color rendering index and color temperature are shown in Table 1.
实施例8Example 8
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为La 3Si 6N 11:Ce 3+，峰值波长位于545-550nm之间；红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.36。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is La 3 Si 6 N 11 :Ce 3+ and the peak wavelength is between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is at 620- Between 630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.36. The color rendering index and color temperature are shown in Table 1.
实施例9Example 9
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(La,Lu) 3Si 6N 11:Ce，峰值波长位于545-550nm之间；红色荧光粉为(Sr,Ca)AlSiN 3:Eu 2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.24。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is 475-480 nm, and the fluorescent material is a combination of yellow fluorescent powder and red fluorescent powder. The yellow phosphor is (La,Lu) 3 Si 6 N 11 :Ce, the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm ; The mass ratio of yellow phosphor to red phosphor is 1:0.24. The color rendering index and color temperature are shown in Table 1.
实施例10Example 10
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为β-Sialon:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN 3:Eu 2+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.26。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is β-Sialon:Eu 2+ with a peak wavelength between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ with a peak wavelength between 620-630nm; the green phosphor is with The mass ratio of red phosphor is 1:0.26. The color rendering index and color temperature are shown in Table 1.
实施例11Example 11
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN 3:Eu 2+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.26。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the green phosphor The mass ratio with the red phosphor is 1:0.26. The color rendering index and color temperature are shown in Table 1.
实施例12Example 12
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrAl 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN 3:Eu 2+，峰值波长位于620-630nm之；绿色荧光粉与红色荧光粉的质量比为1：0.23。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrAl 2 S 4 :Eu 2+ , and the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , and the peak wavelength is between 620-630nm; the green phosphor is compatible with The mass ratio of red phosphor is 1:0.23. The color rendering index and color temperature are shown in Table 1.
实施例13Example 13
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为Sr 2Si 5N 8:Eu 2+，峰值波长位于620-630nm之间；；绿色荧光粉与红色荧光粉的质量比为1：0.25。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm;; the green phosphor The mass ratio with the red phosphor is 1:0.25. The color rendering index and color temperature are shown in Table 1.
实施例14Example 14
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ and the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is between 620-630nm The mass ratio of green phosphor to red phosphor is 1:0.34. The color rendering index and color temperature are shown in Table 1.
实施例15Example 15
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为K 2SiF 6:Mn 4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.35。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , and the peak wavelength is between 520-540nm; the red phosphor is K 2 SiF 6 :Mn 4+ , and the peak wavelength is between 620-630nm; the green phosphor and red fluorescence The mass ratio of powder is 1:0.35. The color rendering index and color temperature are shown in Table 1.
实施例16Example 16
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为K 2GeF 6:Mn 4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.37。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 GeF 6 :Mn 4+ , the peak wavelength is between 620-630nm; the green phosphor and red fluorescence The mass ratio of powder is 1:0.37. The color rendering index and color temperature are shown in Table 1.
实施例17Example 17
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa 2S 4:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为K 2(Si,Ge)F 6:Mn 4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.38。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm; green The mass ratio of phosphor to red phosphor is 1:0.38. The color rendering index and color temperature are shown in Table 1.
实施例18Example 18
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为β-Sialon:Eu 2+，峰值波长位于520-540nm之间；红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.36。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is located at 475-480 nm, and the fluorescent material is a combination of green fluorescent powder and red fluorescent powder. The green phosphor is β-Sialon:Eu 2+ and the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ and the peak wavelength is between 620-630nm ; The mass ratio of green phosphor to red phosphor is 1:0.36. The color rendering index and color temperature are shown in Table 1.
对比例1Comparative example 1
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为La 3Si 6N 11:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is La 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例2Comparative example 2
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y 3Si 6N 11:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is Y 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例3Comparative example 3
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Lu 3Si 6N 11:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is Lu 3 Si 6 N 11 : Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例4Comparative example 4
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(La,Lu) 3Si 6N 11:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is (La,Lu) 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例5Comparative example 5
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(La,Y) 3Si 6N 11:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is (La, Y) 3 Si 6 N 11 : Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例6Comparative example 6
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y 3Al 5O 12:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is Y 3 Al 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例7Comparative example 7
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(Y,Lu) 3Al 5O 12:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, and the fluorescent material is (Y,Lu) 3 Al 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
对比例8Comparative example 8
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y 3(Al,Ga) 5O 12:Ce 3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。 A white light LED for health lighting includes a blue chip and a fluorescent material excited by the blue chip. Specifically, the peak wavelength of the chip is between 475-480 nm, the fluorescent material is Y 3 (Al,Ga) 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555 nm. The color rendering index and color temperature are shown in Table 1.
上述实施例和对比例中白光LED的性能测试结果如表1所示。Table 1 shows the performance test results of the white LEDs in the above embodiments and comparative examples.
表1Table 1
项目 Item 芯片波段 Chip band 显色指数 Color rendering index 色温 Color temperature 相对光效 Relative light effect
对比例1 Comparative example 1 475-480nm 475-480nm 75 75 4000K 4000K 94 94
对比例2 Comparative example 2 475-480nm 475-480nm 74 74 4000K 4000K 92 92
对比例3 Comparative example 3 475-480nm 475-480nm 73 73 4000K 4000K 93 93
对比例4 Comparative example 4 475-480nm 475-480nm 75 75 4000K 4000K 92 92
对比例5 Comparative example 5 475-480nm 475-480nm 74 74 4000K 4000K 95 95
对比例6 Comparative example 6 475-480nm 475-480nm 72 72 4000K 4000K 100 100
对比例7 Comparative example 7 475-480nm 475-480nm 73 73 4000K 4000K 99 99
对比例8 Comparative example 8 475-480nm 475-480nm 75 75 4000K 4000K 103 103
实施例1 Example 1 475-480nm 475-480nm 80 80 4000K 4000K 95 95
实施例2 Example 2 475-480nm 475-480nm 81 81 4000K 4000K 97 97
实施例3 Example 3 475-480nm 475-480nm 82 82 4000K 4000K 99 99
实施例4 Example 4 475-480nm 475-480nm 84 84 4000K 4000K 101 101
实施例5 Example 5 475-480nm 475-480nm 85 85 4000K 4000K 124 124
实施例6 Example 6 475-480nm 475-480nm 85 85 4000K 4000K 135 135
实施例7 Example 7 475-480nm 475-480nm 85 85 4000K 4000K 140 140
实施例8 Example 8 475-480nm 475-480nm 85 85 4000K 4000K 142 142
实施例9 Example 9 475-480nm 475-480nm 84 84 4000K 4000K 98 98
实施例10 Example 10 475-480nm 475-480nm 85 85 4000K 4000K 110 110
实施例11 Example 11 475-480nm 475-480nm 85 85 4000K 4000K 118 118
实施例12 Example 12 475-480nm 475-480nm 85 85 4000K 4000K 115 115
实施例13 Example 13 475-480nm 475-480nm 83 83 4000K 4000K 110 110
实施例14 Example 14 475-480nm 475-480nm 85 85 4000K 4000K 140 140
实施例15 Example 15 475-480nm 475-480nm 85 85 4000K 4000K 121 121
实施例16 Example 16 475-480nm 475-480nm 90 90 4000K 4000K 125 125
实施例17 Example 17 475-480nm 475-480nm 90 90 4000K 4000K 126 126
实施例18 Example 18 475-480nm 475-480nm 90 90 4000K 4000K 135 135
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims (10)

  1. 一种白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料，其特征在于，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。 A white light LED includes a blue chip and a fluorescent material excited by the blue chip, wherein the blue chip has a peak wavelength of 470-480 nm, and the fluorescent material includes a peak wavelength suitable for excitation at 470-480 nm at 540 nm -560nm yellow phosphor and red phosphor with peak wavelength at 600-660nm, or the fluorescent material includes green phosphor with peak wavelength at 500-540nm suitable for excitation at 470-480nm and red phosphor with peak wavelength at 600-660nm powder.
  2. 如权利要求1所述的白光LED，其特征在于，所述荧光材料由峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。 3. The white LED of claim 1, wherein the fluorescent material is composed of yellow phosphor with a peak wavelength of 540 nm-560 nm and a red phosphor with a peak wavelength of 600-660 nm.
  3. 如权利要求2所述的白光LED，其特征在于，所述黄色荧光粉为Ce 3+激活的铝酸盐荧光粉和Ce 3+激活的氮化物荧光粉中的任意一种，所述红色荧光粉为Eu 2+激活的氮化物荧光粉、Eu 3+激活的氧化物荧光粉和Mn 4+激活的氟化物荧光粉中的任意一种；和/或， The white LED of claim 2, wherein the yellow phosphor is any one of Ce 3+ activated aluminate phosphor and Ce 3+ activated nitride phosphor, and the red phosphor The powder is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; and/or,
    所述荧光材料中的黄色荧光粉和红色荧光粉的质量比为1：（0.1~0.5）。The mass ratio of the yellow phosphor and the red phosphor in the fluorescent material is 1: (0.1-0.5).
  4. 如权利要求3所述的白光LED，其特征在于，所述黄色荧光粉为Ce 3+激活的铝酸盐荧光粉，且所述Ce 3+激活的铝酸盐荧光粉选自Y 3Al 5O 12:Ce 3+、(Y,Lu) 3Al 5O 12:Ce 3+和Y 3(Al,Ga) 5O 12:Ce 3+中的至少一种；或者， The white LED according to claim 3, wherein the yellow phosphor is Ce 3+ activated aluminate phosphor, and the Ce 3+ activated aluminate phosphor is selected from Y 3 Al 5 At least one of O 12 : Ce 3+ , (Y, Lu) 3 Al 5 O 12 : Ce 3+ and Y 3 (Al, Ga) 5 O 12 : Ce 3+ ; or,
    所述黄色荧光粉为Ce 3+激活的氮化物荧光粉，且所述Ce 3+激活的氮化物荧光粉选自La 3Si 6N 11:Ce 3+、Y 3Si 6N 11:Ce 3+、Lu 3Si 6N 11:Ce 3+、(La,Lu) 3Si 6N 11:Ce 3+和(La,Y) 3Si 6N 11:Ce 3+的任一种；或者， The yellow phosphor is a Ce 3+ activated nitride phosphor, and the Ce 3+ activated nitride phosphor is selected from La 3 Si 6 N 11 : Ce 3+ , Y 3 Si 6 N 11 : Ce 3 + , Lu 3 Si 6 N 11 :Ce 3+ , (La,Lu) 3 Si 6 N 11 :Ce 3+ and (La,Y) 3 Si 6 N 11 :Ce 3+ ; or,
    所述红色荧光粉为Eu 2+激活的氮化物荧光粉，且所述Eu 2+激活的氮化物荧光粉选自Sr 2Si 5N 8:Eu 2+、CaAlSiN 3:Eu 2+和(Sr,Ca)AlSiN 3:Eu 2+中的至少一种；或者， The red phosphor is a nitride phosphor activated by Eu 2+ , and the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and (Sr ,Ca) At least one of AlSiN 3 :Eu 2+ ; or,
    所述红色荧光粉为Eu 3+激活的氧化物荧光粉，且所述Eu 3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O 4:Eu 3+；或者， The red phosphor is an oxide phosphor activated by Eu 3+ , and the oxide phosphor activated by Eu 3+ is selected from (Y, Gd)(W, P)O 4 :Eu 3+ ; or,
    所述红色荧光粉为Mn 4+激活的氟化物荧光粉，且所述Mn 4+激活的氟化物荧光粉选自K 2SiF 6:Mn 4+、K 2GeF 6:Mn 4+和K 2(Si,Ge)F 6:Mn 4+中的至少一种。 The red phosphor is a fluoride phosphor activated by Mn 4+ , and the fluoride phosphor activated by Mn 4+ is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 At least one of (Si,Ge)F 6 :Mn 4+ .
  5. 如权利要求2所述的白光LED，其特征在于，所述黄色荧光粉为La 3Si 6N 11:Ce 3+，且所述红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+。 The white light LED of claim 2, wherein the yellow phosphor is La 3 Si 6 N 11 :Ce 3+ , and the red phosphor is (Y, Gd) (W, P) O 4 :Eu 3+ .
  6. 如权利要求1所述的白光LED，其特征在于，所述荧光材料由峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。 The white light LED of claim 1, wherein the fluorescent material is composed of a green phosphor with a peak wavelength of 500-540 nm and a red phosphor with a peak wavelength of 600-660 nm.
  7. 如权利要求6所述的白光LED，其特征在于，所述绿色荧光粉为Eu 2+激活的氮氧化物荧光粉和Eu 2+激活的硫化物荧光粉中的任意一种，所述红色荧光粉为Eu 2+激活的氮化物荧光粉、Eu 3+激活的氧化物荧光粉和Mn 4+激活的氟化物荧光粉中的任意一种；和/或， The white LED according to claim 6, wherein the green phosphor is any one of Eu 2+ activated oxynitride phosphor and Eu 2+ activated sulfide phosphor, and the red phosphor The powder is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; and/or,
    所述荧光材料中的绿色荧光粉和红色荧光粉的质量比为1：（0.05~0.5）。The mass ratio of the green phosphor and the red phosphor in the fluorescent material is 1: (0.05-0.5).
  8. 如权利要求6所述的白光LED，其特征在于，所述绿色荧光粉为Eu 2+激活的氮氧化物荧光粉，且所述Eu 2+激活的氮氧化物荧光粉选自β-Sialon:Eu 2+；或者， 7. The white LED of claim 6, wherein the green phosphor is Eu 2+ activated oxynitride phosphor, and the Eu 2+ activated oxynitride phosphor is selected from β-Sialon: Eu 2+ ; or,
    所述绿色荧光粉为Eu 2+激活的硫化物荧光粉，且所述Eu 2+激活的硫化物荧光粉选自SrGa 2S 4:Eu 2+和SrAl 2S 4:Eu 2+中的至少一种；或者， The green phosphor is Eu 2+ activated sulfide phosphor, and the Eu 2+ activated sulfide phosphor is selected from at least one of SrGa 2 S 4 :Eu 2+ and SrAl 2 S 4 :Eu 2+ One kind; or,
    所述红色荧光粉为Eu 2+激活的氮化物荧光粉，且所述Eu 2+激活的氮化物荧光粉选自Sr 2Si 5N 8:Eu 2+、CaAlSiN 3:Eu 2+和(Sr,Ca)AlSiN 3:Eu 2+中的至少一种；或者， The red phosphor is a nitride phosphor activated by Eu 2+ , and the nitride phosphor activated by Eu 2+ is selected from Sr 2 Si 5 N 8 : Eu 2+ , CaAlSiN 3 : Eu 2+ and (Sr ,Ca) At least one of AlSiN 3 :Eu 2+ ; or,
    所述红色荧光粉为Eu 3+激活的氧化物荧光粉，且所述Eu 3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O 4:Eu 3+；或者， The red phosphor is an oxide phosphor activated by Eu 3+ , and the oxide phosphor activated by Eu 3+ is selected from (Y, Gd)(W, P)O 4 :Eu 3+ ; or,
    所述红色荧光粉为Mn 4+激活的氟化物荧光粉，且所述Mn 4+激活的氟化物荧光粉选自K 2SiF 6:Mn 4+、K 2GeF 6:Mn 4+和K 2(Si,Ge)F 6:Mn 4+中的至少一种。 The red phosphor is a fluoride phosphor activated by Mn 4+ , and the fluoride phosphor activated by Mn 4+ is selected from K 2 SiF 6 : Mn 4+ , K 2 GeF 6 : Mn 4+ and K 2 At least one of (Si,Ge)F 6 :Mn 4+ .
  9. 如权利要求6所述的白光LED，其特征在于，所述绿色荧光粉为β-Sialon:Eu 2+或SrGa 2S 4:Eu 2+，且所述红色荧光粉为(Y,Gd)(W,P)O 4:Eu 3+。 The white LED according to claim 6, wherein the green phosphor is β-Sialon: Eu 2+ or SrGa 2 S 4 : Eu 2+ , and the red phosphor is (Y, Gd) ( W,P)O 4 :Eu 3+ .
  10. 一种健康照明用灯具，其特征在于，所述健康照明用灯具包括如权利要求1-9任一项所述的白光LED。 A lamp for health lighting, characterized in that the lamp for health lighting comprises the white light LED according to any one of claims 1-9.
PCT/CN2020/089160 2019-08-23 2020-05-08 White light led and lamp for healthy lighting WO2020200327A1 (en)

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