WO2020000519A1 - Colle à luminophore, film à luminophore et procédé de fabrication associé - Google Patents

Colle à luminophore, film à luminophore et procédé de fabrication associé Download PDF

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Publication number
WO2020000519A1
WO2020000519A1 PCT/CN2018/095315 CN2018095315W WO2020000519A1 WO 2020000519 A1 WO2020000519 A1 WO 2020000519A1 CN 2018095315 W CN2018095315 W CN 2018095315W WO 2020000519 A1 WO2020000519 A1 WO 2020000519A1
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WO
WIPO (PCT)
Prior art keywords
phosphor
green phosphor
yellow
fluorescent glue
light
Prior art date
Application number
PCT/CN2018/095315
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English (en)
Chinese (zh)
Inventor
许瑞龙
曾灵芝
曾骄阳
陈俊达
陈道蓉
曾胜
Original Assignee
朗昭创新控股（深圳）有限公司
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Publication of WO2020000519A1 publication Critical patent/WO2020000519A1/fr

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Classifications

    • 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
    • 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
    • H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
    • 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
    • H01L33/52—Encapsulations
    • H01L33/56—Materials, e.g. epoxy or silicone resin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations

Definitions

  • the invention belongs to the technical field of optical materials, and particularly relates to a fluorescent glue, a fluorescent film and a preparation method thereof.
  • Light is one of the necessary conditions for human survival.
  • the emergence of various artificial light sources solves the problem of lighting at night or in a dark environment, and has the effect of rendering the atmosphere of the environment, improving people's quality of life, but ordinary artificial light brings people The harm cannot be ignored.
  • This hazard mainly comes from the spectral incompleteness of artificial light compared to natural light, as well as higher blue light components and shorter wavelength purple and ultraviolet light components.
  • the wavelength of purple light is between 380 and 450nm, and the damage to the eyes is in the front half of the eyeball (such as eyelid cancer, cataracts, blepharoplasia, abnormal patches, etc.).
  • the wavelength of blue light is between 450 and 495 nm.
  • the damage to the eyes is in the second half of the eyeball, which will cause macular lesions. It can even lead to blindness.
  • the damage of blue light to the eyes, especially the visual impairment of underage students and children, is relatively obvious, which will cause children to be weak.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a fluorescent glue, a fluorescent film and a preparation method thereof, so as to solve the technical problem that the spectrum of white light and natural light obtained by the existing fluorescent glue combined with a blue light chip is very different.
  • the fluorescent glue includes silica gel, red phosphor, green phosphor, and yellow-green phosphor;
  • the color coordinates of the red phosphor are (X: 0.660-0.716, Y: 0.286-0.340);
  • the color coordinates of the green phosphor are (X: 0.064-0.081, Y: 0.488-0.507);
  • the color coordinates of the yellow-green phosphor are (X: 0.367-0.424, Y: 0.545-0.571);
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.035): (0.018-0.068): (0.071-0.253).
  • the present invention also provides a method for preparing the above-mentioned fluorescent glue, including the following steps:
  • the silica gel, the red phosphor, the green phosphor, and the yellow-green phosphor are mixed to obtain the fluorescent glue.
  • a fluorescent film is provided.
  • the fluorescent film is composed of the foregoing fluorescent glue of the present invention.
  • the present invention also provides a method for preparing the above-mentioned fluorescent film, including the following steps:
  • the fluorescent glue is coated on a substrate provided with an LED chip and covers the LED chip.
  • the fluorescent glue is uniformly pressed into a synthetic film by a jig, and dried to obtain a fluorescent film with a uniform thickness.
  • the invention provides a fluorescent glue, which contains red fluorescent powder, green fluorescent powder, and yellow-green fluorescent powder with unique color coordinates.
  • the fluorescent glue obtained by combining within the weight ratio range of the three fluorescent powders can well match blue light, that is, the When the fluorescent glue is excited by blue light to generate yellow light or red light, yellow light or red light and blue light are mixed to obtain white light with more optimized relative spectral distribution and near natural light.
  • the relative spectrum in the 480-500nm band is greater than 0.3
  • the relative spectrum in the 500-640nm band is greater than 0.6.
  • the relative spectral ratio of the cyan portion in the white light spectrum is larger than that of a traditional white light source, and is closer to that of natural light.
  • the relative spectral ratio of cyan light makes the white light spectrum generated by the fluorescent glue of the present invention closer to the white light spectrum of natural light.
  • the fluorescent glue can be used to prepare a fluorescent film in an LED device, and the relative spectral power of each wavelength can be increased, so that the relative spectral power of the entire band is closer to natural light.
  • the preparation method of the above-mentioned fluorescent glue provided by the present invention has simple and easy process, does not require large-scale equipment, and can be prepared on a large scale.
  • the resulting fluorescent glue is excited by blue light, yellow or red light is generated, and mixed with blue light to obtain a relative spectral distribution. More optimized, near-natural white light.
  • the fluorescent film provided by the present invention is composed of the unique fluorescent glue of the present invention.
  • the fluorescent film is set on a blue light chip in an LED device, and the yellow or red light is generated by exciting the fluorescent film with blue light.
  • the yellow or red light can be obtained by mixing with blue light.
  • Near-natural white light with a more optimized relative spectral distribution.
  • the relative spectrum in the 480-500nm band is greater than 0.3
  • the relative spectrum in the 500-640nm band is greater than 0.6.
  • the relative spectral ratio of the green part of the white light spectrum is more traditional.
  • the white light source is larger and closer to the relative spectral proportion of natural light.
  • the fluorescent film can increase the relative spectral power of each wavelength in the LED device, make the relative spectral power of the entire band closer to natural light, and can ensure the consistency of the color temperature of the luminous body, effectively ensuring that the color temperature of the light source device is in the same BIN position, eliminating The problem of LED packaging with the same color temperature and multiple BIN bits improves the qualification rate of the light source device.
  • the preparation method of the fluorescent film provided by the present invention uses a jig to uniformly press the fluorescent glue to obtain a fluorescent film with a uniform thickness everywhere, which can solve the fluorescent layer structure and fluorescence caused by the traditional dispensing method due to inconsistent dispensing times and individual dispensing. Inconsistent problems such as powder concentration and distribution can further ensure the consistency of the color temperature of different LED light emitters, effectively ensure that the color temperature of the light source device is in the same BIN position, eliminating the LED packaging problem of the same color temperature and multiple BIN positions, thereby improving Pass rate of the light source device.
  • FIG. 1 is a first schematic structural diagram of an LED light source according to an embodiment of the present invention
  • FIG. 2 is a second schematic structural diagram of an LED light source according to an embodiment of the present invention.
  • FIG. 3 is a spectrum diagram of an LED light source according to an embodiment of the present invention.
  • an embodiment of the present invention provides a fluorescent glue
  • the fluorescent glue includes silica gel, red phosphor, green phosphor, and yellow-green phosphor; wherein,
  • the color coordinates of the red phosphor are (X: 0.660-0.716, Y: 0.286-0.340);
  • the color coordinates of the green phosphor are (X: 0.064-0.081, Y: 0.488-0.507);
  • the color coordinates of the yellow-green phosphor are (X: 0.367-0.424, Y: 0.545-0.571);
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.035): (0.018-0.068): (0.071-0.253).
  • the embodiment of the present invention provides a fluorescent glue, which includes red fluorescent powder, green fluorescent powder, and yellow-green fluorescent powder with unique color coordinates.
  • the fluorescent glue obtained by combining within the weight ratio range of the three fluorescent powders can well match blue light. That is, when the fluorescent glue is excited by blue light to generate yellow light or red light, the yellow light or red light and blue light are mixed to obtain white light with more optimized spectral distribution and near natural light.
  • the relative spectrum in the 480-500nm band is greater than 0.3
  • the relative spectrum in the 500-640nm band is greater than 0.6.
  • the relative spectral ratio of the cyan portion in the white light spectrum is larger than that of a traditional white light source, and is closer to that of natural light.
  • the relative spectral ratio of cyan light makes the white light spectrum generated by the fluorescent glue of the present invention closer to the white light spectrum of natural light.
  • the fluorescent glue can be used to prepare a fluorescent film in an LED device, and the relative spectral power of each wavelength can be increased, so that the relative spectral power of the entire band is closer to natural light.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.020-0.035): (0.018-0.030): (0.140- 0.253).
  • the fluorescent glue obtained in this weight ratio range can form white light with a natural color temperature of 2700K-3000K.
  • the relative spectrum in the 480-500nm band is greater than 0.30, 500-640nm
  • the relative spectrum of the band is greater than 0.70, and the obtained white light spectrum is closer to that of natural light.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.022): (0.020-0.040): (0.080- 0.140).
  • the fluorescent glue obtained in this weight ratio range can form near-natural white light with a color temperature of 4000K-4200K.
  • the relative spectrum of the white light spectrum in the 480-500nm band is greater than 0.45, 500-640nm
  • the relative spectrum of the band is greater than 0.65, and the obtained white light spectrum is closer to that of natural light.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.020): (0.030-0.068): (0.071- 0.130).
  • the fluorescent glue obtained in this weight ratio range can form white light with a natural color temperature of 5500K-6000K.
  • the relative spectrum of the 480-500nm band is greater than 0.40, 500-640nm.
  • the relative spectrum of the band is greater than 0.60, and the obtained white light spectrum is closer to that of natural light.
  • the ratio of the total mass of the red phosphor, the green phosphor, and the yellow-green phosphor to the mass of the silica gel is (17-43): (57-83), that is, in this fluorescent gel, three kinds of fluorescent
  • the sum of the mass of the powder accounts for 17-43% of the total mass of the fluorescent glue.
  • the red phosphor is preferably a nitride red phosphor, and more preferably, the nitride red phosphor includes CaSrAlSiN 3 (1113 structure).
  • the green phosphor is preferably an oxynitride green phosphor, and more preferably, the oxynitride green phosphor includes BaSi 2 O 2 N 2 (1222 structure).
  • the yellow-green phosphor includes Y 3 Al 5 Ga 5 O 12 (that is, gallium-doped yttrium aluminum garnet).
  • CaSrAlSiN 3 nitride red phosphor, BaSi 2 O 2 N 2 nitrogen oxide green phosphor, and Y 3 Al 5 Ga 5 O 12 yellow-green phosphor can all achieve the color coordinates required by each phosphor, and have more The good luminous intensity and stability are very suitable for the fluorescent glue of the embodiment of the present invention. All kinds of the above phosphors are commercially available.
  • the particle size of the red phosphor powder is ⁇ 15 ⁇ m; the particle size of the green phosphor powder is ⁇ 15 ⁇ m; and the particle size of the yellow-green phosphor powder is ⁇ 15 ⁇ m.
  • the three phosphors can be mixed to obtain a more uniformly dispersed fluorescent glue. More preferably, the particle diameter of the red phosphor is 11-15 ⁇ m; the particle diameter of the green phosphor is 11-15 ⁇ m; and the particle diameter of the yellow-green phosphor is 11-15 ⁇ m.
  • the silica gel is preferably AB silica gel, and the A silica gel and the B silica gel made from monomers such as vinyl and auxiliary agents such as silica are used to obtain AB silica gel.
  • This type of silica gel has good mechanical strength and light transmittance, and can fix the phosphor in the LED device well without affecting the performance of the phosphor.
  • an embodiment of the present invention further provides a method for preparing the above-mentioned fluorescent glue, including the following steps:
  • the method for preparing the above-mentioned fluorescent glue provided by the embodiment of the present invention has simple and easy process, does not require large-scale equipment, and can be prepared on a large scale.
  • the resulting fluorescent glue is excited by blue light, it generates yellow light or red light.
  • White light with more optimized spectral distribution and near natural light.
  • step S01 the selection of the silica gel, the red phosphor, the green phosphor, and the yellow-green phosphor has been described above, and the description will not be repeated here.
  • the mixing process includes stirring and mixing. That is, the silica gel, the red phosphor, the yellow-green phosphor, and the green phosphor are weighed, and then stirred and mixed at a specified weight ratio to obtain the fluorescent glue of the embodiment of the present invention.
  • the stirring time is generally 15-30 minutes.
  • a defoaming treatment may be performed after stirring and mixing.
  • the raw materials are stirred and mixed and then defoamed in a defoamer; the defoaming time depends on the situation, There can be no bubbles on the liquid surface of the fluorescent glue, and the defoaming time is over, usually 30-40min.
  • an embodiment of the present invention provides a fluorescent film, and the fluorescent film is composed of the foregoing fluorescent glue according to the embodiment of the present invention.
  • the fluorescent film provided by the embodiment of the present invention is composed of the fluorescent glue peculiar to the embodiment of the present invention.
  • the fluorescent film is set on a blue light chip in an LED device.
  • the blue film excites the fluorescent film to generate yellow or red light. Blue light mixing can obtain white light with more optimized relative spectral distribution and near-natural light.
  • the relative spectrum in the 480-500nm band is greater than 0.3
  • the relative spectrum in the 500-640nm band is greater than 0.6.
  • the cyan part of the white light spectrum is relatively The spectral ratio is larger than that of traditional white light sources, and is closer to the relative spectral ratio of green light than natural light.
  • the fluorescent film can increase the relative spectral power of each wavelength in the LED device, make the relative spectral power of the entire band closer to natural light, and can ensure the consistency of the color temperature of the luminous body, effectively ensuring that the color temperature of the light source device is in the same BIN position, eliminating The problem of LED packaging with the same color temperature and multiple BIN bits improves the qualification rate of the light source device.
  • the mass percentage content of the red phosphor, the green phosphor, and the yellow-green phosphor is 17-43%, that is, the mass of the three phosphors. The sum accounts for 17-43% of the total mass of the fluorescent film.
  • the fluorescent film within the mass percentage content range is excited by a blue chip to generate white light with a natural temperature of 2700K-6000K.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.020-0.035).
  • the mass percentage content of the red phosphor, the green phosphor, and the yellow-green phosphor in the fluorescent film is 33-43%; at this time,
  • the relative spectrum in the 480-500nm band is greater than 0.30, and the relative spectrum in the 500-640nm band is greater than 0.70.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.022).
  • the mass percentage content of the red phosphor, the green phosphor, and the yellow-green phosphor in the fluorescent film is 25-35%; at this time
  • the relative spectrum in the 480-500nm band is greater than 0.45
  • the relative spectrum in the 500-640nm band is greater than 0.65.
  • the weight ratio of the red phosphor, the green phosphor, and the yellow-green phosphor is (0.010-0.020).
  • the mass percentage content of the red phosphor, the green phosphor, and the yellow-green phosphor in the fluorescent film is 17-27%; at this time
  • the relative spectrum in the 480-500nm band is greater than 0.40
  • the relative spectrum in the 500-640nm band is greater than 0.60.
  • the thickness of the fluorescent film is ⁇ 0.3 mm.
  • the thickness of the fluorescent film helps to improve the heat dissipation effect of the luminous body in the LED device, and can further improve the reliability of the light source device.
  • the thickness of the fluorescent film can be 0.1-0.3 mm.
  • an embodiment of the present invention further provides a method for preparing a fluorescent film, including the following steps:
  • T01 preparing the fluorescent glue by using the above-mentioned preparation method of the fluorescent glue according to the embodiment of the present invention
  • T02 The fluorescent glue is coated on the substrate provided with the LED chip and covers the LED chip.
  • the fluorescent glue is uniformly pressed into a synthetic film through a jig, and dried to obtain a fluorescent film with a uniform thickness.
  • the method for preparing the fluorescent film uses a jig to uniformly compress the fluorescent glue to obtain a fluorescent film with a uniform thickness everywhere, which can solve the fluorescent layer structure of the traditional dispensing method due to inconsistent dispensing times and individual dispensing. And inconsistencies such as phosphor concentration and distribution, which can ensure the consistency of the color temperature of the luminous body and effectively ensure that the color temperature of the light source device is in the same BIN position, eliminating the LED packaging problem of the same color temperature and multiple BIN positions, thereby improving the light source. Pass rate of the device.
  • the method further includes a step of defoaming the fluorescent glue.
  • the fluorescent glue is subjected to a defoaming treatment to obtain a more uniform fluorescent film.
  • the fluorescent glue is put into a defoaming machine for defoaming; the defoaming time depends on the situation, and there can be no bubbles on the liquid surface of the fluorescent glue, and the defoaming time ends, generally 30-40 minutes.
  • the defoamed fluorescent glue is immediately coated on a substrate (such as a chip of an LED device) and dried, and a fluorescent film can be obtained through the curing effect of silica gel. Specifically, it can be dried in a low-temperature drying box.
  • the weight ratio of the green phosphor and the Y 3 Al 5 Ga 5 O 12 yellow-green phosphor is (0.020-0.035): (0.018-0.030): (0.140-0.253).
  • the mass of the three phosphors in the fluorescent film is 100%. The content is 33-43%.
  • the fluorescent film is excited by a blue light chip to obtain near-natural white light with a color temperature of 2700K-3000K: in the spectrum, the relative spectrum in the 480-500nm band is greater than 0.30, and the relative spectrum in the 500-640nm band is greater than 0.70.
  • the weight ratio of the green phosphor and the Y 3 Al 5 Ga 5 O 12 yellow-green phosphor is (0.010-0.022): (0.020-0.040): (0.080-0.140).
  • the mass of the three phosphors in the fluorescent film is 100%. The content is 25-35%.
  • the fluorescent film is excited by a blue light chip to obtain near-natural white light with a color temperature of 4000K-4200K: in the spectrum, the relative spectrum in the 480-500nm band is greater than 0.45, and the relative spectrum in the 500-640nm band is greater than 0.65.
  • the weight ratio of the green phosphor and the Y 3 Al 5 Ga 5 O 12 yellow-green phosphor is (0.010-0.020): (0.030-0.068): (0.071-0.130).
  • the mass of the three phosphors in the fluorescent film is 100%. The content is 17-27%.
  • the fluorescent film is excited by a blue light chip to obtain near-natural white light with a color temperature of 5500K-6000K: in the spectrum, the relative spectrum in the 480-500nm band is greater than 0.40, and the relative spectrum in the 500-640nm band is greater than 0.60.
  • An LED light source includes a substrate 10, a blue LED chip 21, a fluorescent film 22, and a circuit 30.
  • the substrate 10 is used to support at least the blue LED chip 21, and the blue LED chip 21 is disposed on the substrate 10.
  • the fluorescent film 22 covers the blue LED chip 21 and is used to generate white light in combination with the blue LED chip 21;
  • the circuit 30 is provided on the surface of the substrate 10 and is connected to the blue LED chip 21 for connection with an external circuit; the wavelength of the blue LED chip 21
  • the range is 450nm to 480nm.
  • the relative spectral power of the 480nm to 500nm band in the white light emitted by the LED light source is greater than 0.30, and the relative spectral power of the 500nm to 640nm band is greater than 0.60.
  • the concept of relative spectral power is as follows: Because the spectrum emitted by a light source is often not a single wavelength, but is composed of a mixture of many different wavelengths, the spectral radiation of the light source is called the wavelength order and the intensity distribution of each wavelength. The spectral power distribution of the light source.
  • the parameters used to characterize the spectral power can be divided into absolute spectral power and relative spectral power, where the absolute spectral power distribution curve refers to the curve made by the absolute value of light energy at various wavelengths of spectral radiation; and the relative spectral power distribution curve refers to It compares the energy of the various wavelengths of the light source's radiation spectrum with each other, and normalizes the spectral power distribution curve that changes the radiant power only within a specified range.
  • the relative spectral power with the largest radiant power is 1, and the other The relative spectral powers of the wavelengths are all less than 1.
  • the working principle of the LED light source is as follows:
  • the circuit 30 of the LED light source is connected to an external circuit.
  • the blue LED chip 21 generates blue light when the power is turned on.
  • the fluorescent film 22 absorbs the blue light and is excited, thereby generating other colored light. Multiple colors are mixed to form white light. .
  • the relative spectral power of the 480nm to 500nm band is greater than 0.30, which corresponds to the blue light, that is, the relative spectral power of the blue light is greater than 0.30, thereby effectively increasing the proportion of the blue light in the white light and solving the mid-to-long-term near-natural light research
  • the existing low blue light makes the white light generated by the LED light source closer to the real natural light, and further improves the color rendering index R12.
  • the relative spectral power of the 500nm to 640nm band is greater than 0.60, and it is close to the spectrum of this band in natural light. When lighting, the colors of objects and the environment are more realistic, which will make people more comfortable and effectively protect eye health.
  • the wavelength range of the blue LED chip 21 is 457.5 nm to 480 nm, and at least 457.5 nm to 460 nm, so as to further increase the green light ratio.
  • the color rendering index R12 corresponding to the green light is also difficult to improve.
  • the LED light source provided in this embodiment selects a blue light LED chip with a wavelength of 457.5nm to 480nm, and at the same time uses the fluorescent film 22 made of the foregoing phosphor composition, so that the relative spectral power of the blue light is significantly improved.
  • the color rendering index R12 is also improved. Furthermore, it can prevent the problem of color weakness caused by low cyan.
  • blue light is very harmful to the human eye, especially the visual impairment of underage students and children is relatively obvious.
  • the blue light in the spectrum is too high, it will cause children's color weakness, reduce children's color discrimination ability, and cause Rising myopia in adults.
  • high blue light will also affect people's visual experience and mental state, and prolonged exposure to this environment is prone to discomfort such as dizziness and fatigue.
  • the proportion of blue light in the existing LED light sources is very high, so it is very harmful to human eyes.
  • the blue light color ratio b of white light is less than 5.7%, so that the blue light ratio in the white light spectrum is effectively reduced while the spectrum is close to natural light, and the visual experience is more comfortable. , Is conducive to the physical health of the user.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention porte sur une colle à luminophore, sur un film à luminophore et sur un procédé de préparation associé. La colle à luminophore comprend un gel de silice, un luminophore rouge, un luminophore vert et un luminophore jaune-vert. Les coordonnées de couleur du luminophore rouge sont (X : entre 0,660 et 0,716, Y : entre 0,340 et 0,286). Les coordonnées de couleur du luminophore vert sont (X : entre 0,064 et 0,081, Y : entre 0,488-0,507). Les coordonnées de couleur du luminophore jaune-vert sont (X : entre 0,367 et 0,424, Y : entre 0,571 et 0,545). Le rapport en poids du luminophore rouge, du luminophore vert et du luminophore jaune-vert est (entre 0,010 et 0,035):(entre 0,018 et 0,068):(entre 0,071 et 0,253). Lorsque la colle à luminophore est excitée par une lumière bleue pour produire une lumière jaune ou une lumière rouge, le mélange de la lumière jaune ou de la lumière rouge avec la lumière bleue peut obtenir une lumière blanche qui présente une distribution spectrale relative plus optimale et qui est proche de la lumière naturelle.
PCT/CN2018/095315 2018-06-27 2018-07-11 Colle à luminophore, film à luminophore et procédé de fabrication associé WO2020000519A1 (fr)

Applications Claiming Priority (2)

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CN201810681450.XA CN108922957A (zh) 2018-06-27 2018-06-27 荧光胶、荧光膜及其制备方法
CN201810681450.X 2018-06-27

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CN115505304A (zh) * 2021-06-23 2022-12-23 北京科技大学 吸收蓝光发红光和绿光的薄膜及其制备方法和应用
CN115513358B (zh) * 2022-11-21 2023-06-23 四川世纪和光科技发展有限公司 荧光组合物、荧光膜和光源
CN115595148B (zh) * 2022-11-21 2023-03-17 四川世纪和光科技发展有限公司 全色仿生荧光组合物、全色仿生荧光膜和全色仿生光源

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