WO2020200327A1 - Del à lumière blanche et lampe pour éclairage sain - Google Patents

Del à lumière blanche et lampe pour éclairage sain 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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Prior art keywords
phosphor
peak wavelength
activated
red
fluorescent material
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Ceased
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PCT/CN2020/089160
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English (en)
Chinese (zh)
Inventor
陈磊
卢淑芬
赵文
林旺东
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Xuyu Optoelectronics Shenzhen Co Ltd
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Xuyu Optoelectronics Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H10H20/8513—Wavelength conversion materials having 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

La présente invention se rapporte au domaine technique de l'éclairage à semi-conducteur, et concerne en particulier une DEL à lumière blanche et une lampe pour éclairage sain. La DEL à lumière blanche comprend une puce de lumière bleue et un matériel fluorescent stimulé par la puce de lumière bleue. La longueur d'onde de crête de la puce de lumière bleue est de 470 à 480 nm. Le matériau fluorescent comprend une poudre fluorescente jaune ayant une longueur d'onde de crête comprise entre 540 nm et 560 nm et une poudre fluorescente rouge ayant une longueur d'onde de crête comprise entre 600 nm et 660 nm, les deux étant appropriées pour une stimulation de 470 à 480 nm. Ou, le matériau fluorescent comprend une poudre fluorescente verte ayant une longueur d'onde de crête comprise entre 500 nm et 540 nm et une poudre fluorescente rouge ayant une longueur d'onde de crête comprise entre 600 nm et 660 nm, les deux étant appropriées pour une stimulation de 470 à 480 nm. La DEL à lumière blanche provoque une faible détérioration de la lumière bleue, présente une efficacité quantique élevée sous une stimulation de 470 à 480 nm, et peut améliorer l'efficacité lumineuse de DEL à lumière blanche tout en garantissant un indice de rendu de couleur de DEL élevé.
PCT/CN2020/089160 2019-08-23 2020-05-08 Del à lumière blanche et lampe pour éclairage sain Ceased WO2020200327A1 (fr)

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CN201910782722.XA CN110504348A (zh) 2019-08-23 2019-08-23 白光led和健康照明用灯具

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CN110504348A (zh) * 2019-08-23 2019-11-26 旭宇光电（深圳）股份有限公司 白光led和健康照明用灯具
CN111092140B (zh) * 2019-11-27 2021-12-14 安徽锐拓电子有限公司 发光二极管光源及显示装置
CN111223979B (zh) * 2019-12-04 2021-04-16 旭宇光电（深圳）股份有限公司 健康照明用的发光装置和灯具
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