WO2020034390A1 - Led white light device and preparation method therefor, and led backlight module - Google Patents

Led white light device and preparation method therefor, and led backlight module Download PDF

Info

Publication number
WO2020034390A1
WO2020034390A1 PCT/CN2018/111517 CN2018111517W WO2020034390A1 WO 2020034390 A1 WO2020034390 A1 WO 2020034390A1 CN 2018111517 W CN2018111517 W CN 2018111517W WO 2020034390 A1 WO2020034390 A1 WO 2020034390A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
white light
phosphor
blue light
light device
Prior art date
Application number
PCT/CN2018/111517
Other languages
French (fr)
Chinese (zh)
Inventor
王海军
黄杨程
刘发波
闫钟海
彭伟健
龚丹雷
陈翔
陈均华
李丹伟
陈子豪
王焕乙
Original Assignee
佛山市国星光电股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山市国星光电股份有限公司 filed Critical 佛山市国星光电股份有限公司
Publication of WO2020034390A1 publication Critical patent/WO2020034390A1/en

Links

Images

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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to the field of LED devices, in particular to an LED white light device capable of preventing blue light, a method for preparing the LED white light device, and an LED backlight module made of the LED white light device.
  • white light LED As a new type of solid-state light source, white light LED has great application prospects in the field of lighting and display due to its many advantages such as energy saving, environmental protection, long life and small size.
  • white LED packages with transparent substrates are used. They are mainly used in advertising signs and general lighting. Typical products such as filaments and luminous characters use transparent (translucent) glass, ceramics, and polymers.
  • the substrate is used as a packaging carrier.
  • white light LED devices currently on the market usually use fluorescent glue to coat blue light LED chips to emit white light.
  • the active layer of blue light LED chips is generally grown on a transparent substrate.
  • the light emitted from the active layer of the blue LED chip is emitted from all directions of the blue LED chip, including the back of the blue LED chip; if the blue LED chip is packaged on a transparent substrate, the back of the LED device thus packaged is also Will leak blue light.
  • the blue light LED chips are coated with fluorescent glue, and most of them are solving the problem of how to improve the performance of the white light devices, such as brightness and color gamut.
  • the prior art 1 is CN103215036B, which discloses a phosphor particle group and a light-emitting device using the same.
  • the white light-emitting device includes: a light-emitting element, which is a nitrided semiconductor that emits primary light having a peak wavelength of 440 to 470 nm; And a wavelength conversion unit that absorbs a part of the primary light to emit a secondary light having a wavelength longer than the wavelength of the primary light, the wavelength conversion unit having a general formula Eu a Si b Al
  • the ⁇ -type SiAION that is substantially expressed by c O d N e , that is, the group of phosphor particles of divalent europium-activated oxynitride green-based phosphor particles, has a fluorescence ratio of 3.0 or less when the ratio of the major axis to the minor axis exceeds 1.0.
  • the technical problem to be solved by the present invention is to provide an LED white light device, and simultaneously achieve the effects of preventing blue light, high color gamut and pure white.
  • the technical problem to be solved by the present invention is also to provide an LED white light device, which has good color uniformity and consistency, and has three continuous colors of blue, green and red, which is closer to the solar spectrum.
  • the technical problem to be solved by the present invention is also to provide a method for manufacturing the above LED white light device.
  • the technical problem to be solved by the present invention is also to provide an LED backlight module made by using the LED white light device.
  • the present invention provides an LED white light device including a blue light chip and a phosphor mixture, and the wavelength range of the blue light chip is (455-470) nm;
  • the phosphor powder mixture includes a green phosphor powder having a peak wavelength range of excited light (525-545) nm and a red phosphor powder having a peak wavelength range of excited light (610-660) nm;
  • the green phosphor and the red phosphor are mixed at a ratio of 1: (0.05-0.5) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (450-465) nm ;
  • the ratio between the energy of the spectrum of the packaged LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.2).
  • the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32.
  • the NTSC color gamut value of the LED white light device is ⁇ 72%.
  • the green phosphor is a nitride green phosphor, a silicate green phosphor, or an aluminate green phosphor.
  • the green phosphor includes SiAlON: Eu, and its peak wavelength is 525-550 nm.
  • the red phosphor is a nitride red phosphor or a Mn 4+ doped fluoride red phosphor.
  • the red phosphor includes (SrCa) AlSiN 3 : Eu, and its peak wavelength is (610-660) nm.
  • the present invention provides a method for manufacturing an LED white light device, which is characterized by including:
  • the fluorescent glue mixture is set on an LED bracket on which a blue light chip is placed, and an LED white light device is obtained after curing.
  • the present invention provides an LED backlight module including the above-mentioned LED white light device.
  • the present invention adopts a blue light chip with a long wavelength of (455-470) nm and is equipped with a redesigned phosphor powder.
  • the green phosphor powder having a peak wavelength range of excited light (525-545) nm and the peak wavelength range of excited light are (610-660) nm red phosphor, green phosphor and red phosphor are mixed at a ratio of 1: (0.05-0.5), which can simultaneously achieve the effects of preventing blue light, high color gamut and pure white, as follows:
  • the present invention can convert more than 95% of harmful blue light into long-wave low-energy light above 450nm, solve the problem of blue light harming eyes from the perspective of hardware, and reduce the damage caused by high-risk blue light to users;
  • the invention has blue, green, and red three-color continuous spectrum, which is closer to the solar spectrum, and the emitted light makes people feel comfortable and natural, which is conducive to achieving healthy lighting;
  • the present invention uses two kinds of phosphors, the proportion of the amount of phosphors is easy to adjust, and can be evenly distributed in the packaging colloid, thereby improving the light emitting performance of the LED device, and the color uniformity and consistency of the LED device are good;
  • the invention has high brightness, which is almost the same as that of the conventional phosphor
  • the color gamut of the present invention is high, and the NTSC value can reach more than 72%, which is higher than 68% of the conventional LED device;
  • the LED device of the present invention can achieve pure white.
  • FIG. 1 is a schematic structural diagram of an LED white light device according to the present invention.
  • Embodiment 1 is a spectrum diagram of Embodiment 1 of an LED white light device according to the present invention.
  • Embodiment 3 is a color gamut diagram of Embodiment 1 of an LED white light device according to the present invention.
  • FIG. 4 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the white LED device according to Example 1 of the present invention
  • FIG. 5 is a spectral comparison diagram of Embodiment 1 of the LED white light device of the present invention and the prior art;
  • Embodiment 2 is a spectrum diagram of Embodiment 2 of an LED white light device according to the present invention.
  • Embodiment 7 is a color gamut diagram of Embodiment 2 of an LED white light device according to the present invention.
  • FIG. 8 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the embodiment 2 of the LED white light device according to the present invention.
  • FIG. 9 is a spectrum diagram of Embodiment 3 of an LED white light device according to the present invention.
  • Embodiment 10 is a color gamut diagram of Embodiment 3 of an LED white light device according to the present invention.
  • FIG. 11 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the white LED device according to Embodiment 3 of the present invention.
  • the present invention provides an LED white light device for preventing blue light pollution applied to a backlight system, which includes an LED bracket 1, a blue light chip 2, and a phosphor mixture 3.
  • the blue light chip 2 is electrically connected to the LED bracket 1.
  • the wavelength range of the blue light chip 2 is (455-470) nm.
  • the invention uses a long-wavelength blue light chip. Due to the change of the chip wavelength, if a traditional phosphor combination is used, the color gamut is narrow and the light emitted is greenish, which cannot meet the requirements of color gamut and pure white. Therefore, the present invention needs to be re-matched with a new phosphor combination, specifically:
  • the phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (525-545) nm and a red phosphor having a peak wavelength range of excited light (610-660) nm; the green phosphor and red
  • the phosphor is mixed at a ratio of 1: (0.05-0.5) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (450-465) nm; the packaged white LED device
  • the ratio of the energy of the spectrum to the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.2).
  • the phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (531-545) nm and a red phosphor having a peak wavelength range of excited light (630-650) nm; the green fluorescence Pink and red phosphor are mixed at a ratio of 1: (0.05-0.25) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (455-465) nm; The ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.15).
  • the phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (531-545) nm and a red phosphor having a peak wavelength range of excited light (630-650) nm;
  • the phosphor and red phosphor are mixed at a ratio of 1: (0.05-0.15) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (460-465) nm; after packaging
  • the ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.1).
  • the green phosphor is a nitride green phosphor, a silicate green phosphor, or an aluminate green phosphor, but it is not limited thereto.
  • the green phosphor includes SiAlON: Eu, and its peak wavelength is (525-550) nm.
  • the red phosphor is a nitride red phosphor or a Mn 4+ doped fluoride red phosphor, but it is not limited thereto.
  • the red phosphor includes (SrCa) AlSiN 3 : Eu, and its peak wavelength is (610-660) nm.
  • the ratio of the green phosphor and the red phosphor refers to a mass percentage.
  • red phosphors include, but are not limited to, the above substances, as long as each color meets the corresponding specified wavelength range.
  • the present invention also includes packaging glue. It should be noted that the amount of the packaging glue can also be adjusted according to the performance of the LED white light device.
  • the present invention adopts a (455-470) nm long-wavelength blue light chip, matches a redesigned phosphor, and covers the blue light chip to obtain an LED white light device.
  • the peak wavelength range of the blue light emitted by the LED white light device is (450-465) nm
  • the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the wavelength range of (400-450) nm is 1 : (0.05-0.2)
  • the present invention can convert more than 95% of harmful blue light into long-wave low-energy light above 450nm, solve the problem of blue light harming eyes from the perspective of hardware, and reduce the damage caused by high-risk blue light to users.
  • the present invention provides a method for manufacturing an LED white light device, which is characterized by including:
  • the fluorescent glue mixture is set on an LED bracket on which a blue light chip is placed, and an LED white light device is obtained after curing.
  • the present invention provides an LED backlight module including the above-mentioned LED white light device.
  • the technical details of the green phosphor, the red phosphor, and the blue light chip used by the LED white light device are the same as described above, and are not repeated here.
  • nitride green phosphors composition: SiAlON: Eu
  • nitride red phosphors composition: (SrCa) AlSiN 3 : Eu
  • the red and green phosphors and the encapsulant are mixed uniformly by stirring, and a vacuum gel mixture is obtained after vacuum degassing.
  • the peak wavelength of the blue light band of the white LED device is 460 nm
  • the peak wavelength of the green light band is 543 nm
  • the half-wave width is 55 nm
  • the peak wavelength of the red light band is 630 nm
  • the half-wave width is 75 nm.
  • the invention has blue and green wavelengths.
  • the red, three-color continuous spectrum is closer to the solar spectrum, and the light emitted makes people feel comfortable and natural, which is conducive to achieving healthy lighting.
  • the NTSC color gamut value of the LED white light device is ⁇ 72%, and the color gamut is high, which is 4% higher than that of a conventional LED device.
  • the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.057, and the harmful blue light content is low.
  • the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
  • the peak wavelength of the blue light band of the white LED device is 456 nm
  • the peak wavelength of the green light band is 537 nm
  • the peak wavelength of the red light band is 630 nm
  • the half-wave width is 75 nm.
  • the present invention has three continuous colors of blue, green, and red. Closer to the solar spectrum, the light emitted makes people feel comfortable and natural, which is conducive to achieving healthy lighting.
  • the NTSC color gamut value of the LED white light device is ⁇ 72%, and the color gamut is high.
  • the ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.111, and the harmful blue light content is low.
  • the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
  • the peak wavelength of the blue light band of the white LED device is 452 nm
  • the peak wavelength of the green light band is 537 nm
  • the peak wavelength of the red light band is 630 nm
  • the half-wave width is 75 nm.
  • the NTSC color gamut value of the LED white light device is ⁇ 72%, and the color gamut is high.
  • the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.171, and the harmful blue light content is low.
  • the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
  • Embodiment 1-3 The technical comparison between Embodiment 1-3 and the prior art is as follows:
  • a blue light chip is used to excite yttrium alumina vermiculite phosphor (YAG powder) and mix to produce white light.
  • the present invention has high brightness, natural color performance, and anti-blue light properties. It can convert more than 95% of harmful blue light into long-wave low-energy light above 450 nm, which solves the problem of blue light harming the eyes from a hardware perspective Problem, reducing the damage caused to users by high-risk blue light.
  • the present invention has three continuous colors of blue, green, and red, which are closer to the solar spectrum. The emitted light makes people feel comfortable and natural, and is conducive to achieving healthy lighting.
  • the red light component of the light emission spectrum of the prior art is less, the color of the LED display effect is green, the color gamut value reaches 68% NTSC, the color expression is poor, and the anti-blue light effect is not obvious.

Landscapes

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

Abstract

Provided is an LED white light device, comprising a blue light chip (2) and a phosphor mixture (3), wherein a waveband of the blue light chip (2) is (455-470) nm; the phosphor mixture (3) comprises a green phosphor with an excited light peak wavelength range of (525-545) nm and a red phosphor with an excited light peak wavelength range of (610-660) nm; and the green phosphor and the red phosphor are mixed in a ratio of 1:(0.05-0.5), and cover the blue light chip (2), so that the encapsulated LED white light device emits blue light with a peak wavelength range of (450-465) nm. Correspondingly, further provided are a preparation method for an LED white light device, and an LED backlight module using the LED white light device. The LED white light device can realize the effects of anti-blue light, high color gamut and pure white at the same time, and has good color uniformity and consistency and has a continuous spectrum with three colors of blue, green and red, which is closer to the solar spectrum.

Description

LED白光器件及其制备方法、LED背光模组LED white light device, preparation method thereof, and LED backlight module 技术领域Technical field
本发明涉及LED器件领域，特别涉及一种可以防蓝光的LED白光器件，以及该LED白光器件的制备方法，采用该LED白光器件制成的LED背光模组。The invention relates to the field of LED devices, in particular to an LED white light device capable of preventing blue light, a method for preparing the LED white light device, and an LED backlight module made of the LED white light device.
背景技术Background technique
白光LED作为一种新型的固体光源,以其节能、绿色环保、寿命长、体积小等诸多优点，在照明和显示领域有着巨大的应用前景。As a new type of solid-state light source, white light LED has great application prospects in the field of lighting and display due to its many advantages such as energy saving, environmental protection, long life and small size.
目前国内白光LED的生产规模已经很大，一般采用透明基板白光LED封装，主要应用在广告标示、及通用照明领域，典型产品如灯丝、发光字，采用透明(半透明)玻璃、陶瓷、高分子基板作为封装载体，然而由于生产成本及工艺等条件的限制，目前市场上的白光LED器件通常采用荧光胶涂覆在蓝光LED芯片，从而发出白光，蓝光LED芯片的有源层一般生长在透明衬底上，蓝光LED芯片的有源层发出的光从蓝光LED芯片的各个方向射出，包括蓝光LED芯片的背面；若该蓝光LED芯片封装在透明基板上，则由此封装的LED器件的背面也会泄露蓝光。At present, the production scale of white LEDs in China is already very large. Generally, white LED packages with transparent substrates are used. They are mainly used in advertising signs and general lighting. Typical products such as filaments and luminous characters use transparent (translucent) glass, ceramics, and polymers. The substrate is used as a packaging carrier. However, due to production cost and process constraints, white light LED devices currently on the market usually use fluorescent glue to coat blue light LED chips to emit white light. The active layer of blue light LED chips is generally grown on a transparent substrate. On the bottom, the light emitted from the active layer of the blue LED chip is emitted from all directions of the blue LED chip, including the back of the blue LED chip; if the blue LED chip is packaged on a transparent substrate, the back of the LED device thus packaged is also Will leak blue light.
早在1966年Nell等研究发现蓝光的照射可以引起视网膜细胞的损伤，导致视力下降甚至丧失。其中，波长400-450纳米之间的短波蓝光对视网膜的危害程度最大。在2010年国际光协会年会中，世界顶尖光学专家一致指出：短波蓝光具有极高能量，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，而且这些损伤是不可逆的。As early as 1966, Nell et al. Found that blue light irradiation can cause damage to retinal cells, leading to decreased vision or even loss of vision. Among them, the short-wave blue light between 400-450 nanometers is the most harmful to the retina. At the 2010 annual meeting of the International Light Association, the world's top optics experts unanimously pointed out that short-wave blue light has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiates the retina to generate free radicals, and these free radicals can cause the death of retinal pigment epithelial cells. The death of epithelial cells can cause the lack of nutrients in light-sensitive cells and cause visual damage. These damages are irreversible.
现有的LED白光器件中，通过荧光胶涂覆在蓝光LED芯片，大多 都在解决如何提高白光器件的性能问题，例如亮度和色域。In the existing LED white light devices, the blue light LED chips are coated with fluorescent glue, and most of them are solving the problem of how to improve the performance of the white light devices, such as brightness and color gamut.
现有技术1为CN103215036B，其公开了荧光体粒子组以及使用其的发光装置，所述白色发光装置包括:发光元件，其是发出峰值波长为440～470nm的一次光的氮化嫁系半导体；以及波长变换部，其对上述一次光的一部进行吸收，以发出具有比所述一次光的波长更长的波长的二次光，所述波长变换部中，由一般式Eu aSi bAl cO dN e实质地表达的β型SiAION、即2价的铕活化氧氮化物绿色系发光荧光体粒子的荧光体粒子组，由长径与短径的比值超过1.0而为3.0以下的荧光体粒子构成60％以上，其中，0.005≤a≤0.4，b+c＝12，d+e＝16。即，现有技术1是采用蓝光芯片激发绿色荧光粉+红色荧光粉的技术方案，但是其解决的是亮度和色域比的问题，无法解决蓝光的问题。 The prior art 1 is CN103215036B, which discloses a phosphor particle group and a light-emitting device using the same. The white light-emitting device includes: a light-emitting element, which is a nitrided semiconductor that emits primary light having a peak wavelength of 440 to 470 nm; And a wavelength conversion unit that absorbs a part of the primary light to emit a secondary light having a wavelength longer than the wavelength of the primary light, the wavelength conversion unit having a general formula Eu a Si b Al The β-type SiAION that is substantially expressed by c O d N e , that is, the group of phosphor particles of divalent europium-activated oxynitride green-based phosphor particles, has a fluorescence ratio of 3.0 or less when the ratio of the major axis to the minor axis exceeds 1.0. The body particle composition is 60% or more, in which 0.005 ≦ a ≦ 0.4, b + c = 12, and d + e = 16. That is, the prior art 1 uses a blue light chip to excite a green phosphor + a red phosphor, but it solves the problems of brightness and color gamut ratio, and cannot solve the problem of blue light.
发明内容Summary of the Invention
本发明所要解决的技术问题在于，提供一种LED白光器件，同时实现防蓝光、色域高及纯白的效果。The technical problem to be solved by the present invention is to provide an LED white light device, and simultaneously achieve the effects of preventing blue light, high color gamut and pure white.
本发明所要解决的技术问题还在于，提供一种LED白光器件，颜色均匀性、一致性好，且具有蓝、绿、红三色连续光谱，更接近太阳光谱。The technical problem to be solved by the present invention is also to provide an LED white light device, which has good color uniformity and consistency, and has three continuous colors of blue, green and red, which is closer to the solar spectrum.
本发明所要解决的技术问题还在于，提供一种上述LED白光器件的制备方法。The technical problem to be solved by the present invention is also to provide a method for manufacturing the above LED white light device.
本发明所要解决的技术问题还在于，提供一种采用上述LED白光器件制得的LED背光模组。The technical problem to be solved by the present invention is also to provide an LED backlight module made by using the LED white light device.
为达到上述技术效果，本发明提供了一种LED白光器件，包括蓝光芯片和荧光粉混合物，所述蓝光芯片的波段为(455-470)nm；In order to achieve the above technical effects, the present invention provides an LED white light device including a blue light chip and a phosphor mixture, and the wavelength range of the blue light chip is (455-470) nm;
所述荧光粉混合物包括受激发光峰值波长范围为(525-545)nm的绿色荧光粉和受激发光峰值波长范围为(610-660)nm的红色荧光粉；The phosphor powder mixture includes a green phosphor powder having a peak wavelength range of excited light (525-545) nm and a red phosphor powder having a peak wavelength range of excited light (610-660) nm;
所述绿色荧光粉和红色荧光粉以1:(0.05-0.5)的配比混合，并覆盖在蓝光芯片上，以使封装后的LED白光器件出射蓝光的峰值波长范围为(450-465)nm；封装后的LED白光器件的光谱的能量与(400-450) nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.2)。The green phosphor and the red phosphor are mixed at a ratio of 1: (0.05-0.5) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (450-465) nm ; The ratio between the energy of the spectrum of the packaged LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.2).
作为上述方案的改进，所述LED白光器件的白光的色度坐标范围为：CIE x:0.22-0.32以及CIE y：0.20-0.32。As an improvement of the above scheme, the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32.
作为上述方案的改进，所述LED白光器件的NTSC色域值≥72％。As an improvement of the above solution, the NTSC color gamut value of the LED white light device is ≥72%.
作为上述方案的改进，所述绿色荧光粉为氮化物绿色荧光粉、硅酸盐绿色荧光粉或铝酸盐绿色荧光粉。As an improvement of the above scheme, the green phosphor is a nitride green phosphor, a silicate green phosphor, or an aluminate green phosphor.
作为上述方案的改进，所述绿色荧光粉包括SiAlON:Eu，其峰值波长为525-550nm。As an improvement of the above scheme, the green phosphor includes SiAlON: Eu, and its peak wavelength is 525-550 nm.
作为上述方案的改进，所述红色荧光粉为氮化物红色荧光粉或Mn 4+掺杂氟化物红色荧光粉。 As an improvement of the above scheme, the red phosphor is a nitride red phosphor or a Mn 4+ doped fluoride red phosphor.
作为上述方案的改进，所述红色荧光粉包括(SrCa)AlSiN 3:Eu，其峰值波长为(610-660)nm。 As an improvement of the above scheme, the red phosphor includes (SrCa) AlSiN 3 : Eu, and its peak wavelength is (610-660) nm.
相应的，本发明提供了一种LED白光器件的制备方法，其特征在于，包括：Accordingly, the present invention provides a method for manufacturing an LED white light device, which is characterized by including:
(1)将绿色荧光粉和红色荧光粉按配比混合，然后加入封装胶中，搅拌均匀，再经抽真空脱泡得到荧光胶混合物；(1) Mix the green fluorescent powder and the red fluorescent powder according to the mixing ratio, then add them to the encapsulant, stir well, and degas by vacuuming to obtain a fluorescent gel mixture;
(2)将荧光胶混合物设于置有蓝光芯片的LED支架上，经固化得到LED白光器件。(2) The fluorescent glue mixture is set on an LED bracket on which a blue light chip is placed, and an LED white light device is obtained after curing.
相应的，本发明提供了一种LED背光模组，包括上述LED白光器件。Accordingly, the present invention provides an LED backlight module including the above-mentioned LED white light device.
实施本发明具有如下有益效果：The implementation of the present invention has the following beneficial effects:
本发明采用(455-470)nm长波长的蓝光芯片，并搭配重新设计的荧光粉,具体是受激发光峰值波长范围为(525-545)nm的绿色荧光粉和受激发光峰值波长范围为(610-660)nm的红色荧光粉,绿色荧光粉和红色荧光粉以1:(0.05-0.5)的配比混合,可以同时实现防蓝光、色域高及纯白的效果，具体如下：The present invention adopts a blue light chip with a long wavelength of (455-470) nm and is equipped with a redesigned phosphor powder. Specifically, the green phosphor powder having a peak wavelength range of excited light (525-545) nm and the peak wavelength range of excited light are (610-660) nm red phosphor, green phosphor and red phosphor are mixed at a ratio of 1: (0.05-0.5), which can simultaneously achieve the effects of preventing blue light, high color gamut and pure white, as follows:
(1)本发明能够将95％以上的有害蓝光转换为450nm以上的长波低能光线，从硬件的角度解决了蓝光危害眼睛的问题，降低了高危蓝 光对用户所造成的伤害；(1) The present invention can convert more than 95% of harmful blue light into long-wave low-energy light above 450nm, solve the problem of blue light harming eyes from the perspective of hardware, and reduce the damage caused by high-risk blue light to users;
(2)本发明具有蓝、绿、红三色连续光谱，更接近太阳光谱，发出的光使人感觉舒适自然，利于实现健康照明；(2) The invention has blue, green, and red three-color continuous spectrum, which is closer to the solar spectrum, and the emitted light makes people feel comfortable and natural, which is conducive to achieving healthy lighting;
(3)本发明采用两种荧光粉，荧光粉用量比例易于调配，且能够均匀分布于封装胶体内，从而提高LED器件的出光性能，LED器件的颜色均匀性、一致性好；(3) The present invention uses two kinds of phosphors, the proportion of the amount of phosphors is easy to adjust, and can be evenly distributed in the packaging colloid, thereby improving the light emitting performance of the LED device, and the color uniformity and consistency of the LED device are good;
(4)本发明亮度高，和常规荧光粉几乎等同亮度；(4) The invention has high brightness, which is almost the same as that of the conventional phosphor;
(5)本发明色域高，NTSC值可以达到72％以上，高于常规LED器件的68％；(5) The color gamut of the present invention is high, and the NTSC value can reach more than 72%, which is higher than 68% of the conventional LED device;
(6)本发明LED器件可实现纯白。(6) The LED device of the present invention can achieve pure white.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明LED白光器件的结构示意图；1 is a schematic structural diagram of an LED white light device according to the present invention;
图2为本发明LED白光器件实施例1的光谱图；2 is a spectrum diagram of Embodiment 1 of an LED white light device according to the present invention;
图3为本发明LED白光器件实施例1的色域图；3 is a color gamut diagram of Embodiment 1 of an LED white light device according to the present invention;
图4为本发明LED白光器件实施例1的光谱中波长范围为(400-450)nm的蓝光能量比例图；FIG. 4 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the white LED device according to Example 1 of the present invention; FIG.
图5为本发明LED白光器件实施例1与现有技术的光谱对比图；FIG. 5 is a spectral comparison diagram of Embodiment 1 of the LED white light device of the present invention and the prior art; FIG.
图6为本发明LED白光器件实施例2的光谱图；6 is a spectrum diagram of Embodiment 2 of an LED white light device according to the present invention;
图7为本发明LED白光器件实施例2的色域图；7 is a color gamut diagram of Embodiment 2 of an LED white light device according to the present invention;
图8为本发明LED白光器件实施例2的光谱中波长范围为(400-450)nm的蓝光能量比例图；FIG. 8 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the embodiment 2 of the LED white light device according to the present invention; FIG.
图9为本发明LED白光器件实施例3的光谱图；FIG. 9 is a spectrum diagram of Embodiment 3 of an LED white light device according to the present invention; FIG.
图10为本发明LED白光器件实施例3的色域图；10 is a color gamut diagram of Embodiment 3 of an LED white light device according to the present invention;
图11为本发明LED白光器件实施例3的光谱中波长范围为(400-450)nm的蓝光能量比例图。FIG. 11 is a blue light energy ratio diagram of a wavelength range of (400-450) nm in the spectrum of the white LED device according to Embodiment 3 of the present invention.
具体实施方式detailed description
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图 对本发明作进一步地详细描述。To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.
如图1所示，本发明提供了一种应用于背光系统的防蓝光污染的LED白光器件，包括LED支架1、蓝光芯片2和荧光粉混合物3，蓝光芯片2与LED支架1电性连接。As shown in FIG. 1, the present invention provides an LED white light device for preventing blue light pollution applied to a backlight system, which includes an LED bracket 1, a blue light chip 2, and a phosphor mixture 3. The blue light chip 2 is electrically connected to the LED bracket 1.
所述蓝光芯片2的波段为(455-470)nm。本发明采用长波长的蓝光芯片，由于芯片波长改变，如果使用传统的荧光粉组合，其色域较窄，且发出的光偏绿，不能满足色域及纯白的要求。因此，本发明需要重新搭配新的荧光粉组合，具体是：The wavelength range of the blue light chip 2 is (455-470) nm. The invention uses a long-wavelength blue light chip. Due to the change of the chip wavelength, if a traditional phosphor combination is used, the color gamut is narrow and the light emitted is greenish, which cannot meet the requirements of color gamut and pure white. Therefore, the present invention needs to be re-matched with a new phosphor combination, specifically:
所述荧光粉混合物3包括受激发光峰值波长范围为(525-545)nm的绿色荧光粉和受激发光峰值波长范围为(610-660)nm的红色荧光粉；所述绿色荧光粉和红色荧光粉以1:(0.05-0.5)的配比混合，并覆盖在蓝光芯片上，以使封装后的LED白光器件出射蓝光的峰值波长范围为(450-465)nm；封装后的LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.2)。The phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (525-545) nm and a red phosphor having a peak wavelength range of excited light (610-660) nm; the green phosphor and red The phosphor is mixed at a ratio of 1: (0.05-0.5) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (450-465) nm; the packaged white LED device The ratio of the energy of the spectrum to the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.2).
优选的，所述荧光粉混合物3包括受激发光峰值波长范围为(531-545)nm的绿色荧光粉和受激发光峰值波长范围为(630-650)nm的红色荧光粉；所述绿色荧光粉和红色荧光粉以1:(0.05-0.25)的配比混合，并覆盖在蓝光芯片上，以使封装后的LED白光器件出射蓝光的峰值波长范围为(455-465)nm；封装后的LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.15)。Preferably, the phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (531-545) nm and a red phosphor having a peak wavelength range of excited light (630-650) nm; the green fluorescence Pink and red phosphor are mixed at a ratio of 1: (0.05-0.25) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (455-465) nm; The ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.15).
更佳的，所述荧光粉混合物3包括受激发光峰值波长范围为(531-545)nm的绿色荧光粉和受激发光峰值波长范围为(630-650)nm的红色荧光粉；所述绿色荧光粉和红色荧光粉以1:(0.05-0.15)的配比混合，并覆盖在蓝光芯片上，以使封装后的LED白光器件出射蓝光的峰值波长范围为(460-465)nm；封装后的LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.1)。More preferably, the phosphor mixture 3 includes a green phosphor having a peak wavelength range of excited light (531-545) nm and a red phosphor having a peak wavelength range of excited light (630-650) nm; The phosphor and red phosphor are mixed at a ratio of 1: (0.05-0.15) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (460-465) nm; after packaging The ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.1).
其中，所述绿色荧光粉为氮化物绿色荧光粉、硅酸盐绿色荧光粉 或铝酸盐绿色荧光粉，但并不以此为限。优选的,所述绿色荧光粉包括SiAlON:Eu，其峰值波长为(525-550)nm。The green phosphor is a nitride green phosphor, a silicate green phosphor, or an aluminate green phosphor, but it is not limited thereto. Preferably, the green phosphor includes SiAlON: Eu, and its peak wavelength is (525-550) nm.
所述红色荧光粉为氮化物红色荧光粉或Mn 4+掺杂氟化物红色荧光粉，但并不以此为限。优选的,所述红色荧光粉包括(SrCa)AlSiN 3:Eu，其峰值波长为(610-660)nm。 The red phosphor is a nitride red phosphor or a Mn 4+ doped fluoride red phosphor, but it is not limited thereto. Preferably, the red phosphor includes (SrCa) AlSiN 3 : Eu, and its peak wavelength is (610-660) nm.
需要说明的是，绿色荧光粉和红色荧光粉的配比是指质量百分比。It should be noted that the ratio of the green phosphor and the red phosphor refers to a mass percentage.
还需要说明的是，上述绿色荧光粉和红色荧光粉包括但不限于以上物质，只要是各个颜色符合相应规定的波长范围即可。It should also be noted that the above green phosphors and red phosphors include, but are not limited to, the above substances, as long as each color meets the corresponding specified wavelength range.
进一步，本发明还包括封装胶水，需要说明的是，所述封装胶水的用量还可以根据LED白光器件的性能进行调整。Further, the present invention also includes packaging glue. It should be noted that the amount of the packaging glue can also be adjusted according to the performance of the LED white light device.
综上，本发明采用(455-470)nm长波长的蓝光芯片，并搭配重新设计的荧光粉，并覆盖在蓝光芯片上，得到LED白光器件。In summary, the present invention adopts a (455-470) nm long-wavelength blue light chip, matches a redesigned phosphor, and covers the blue light chip to obtain an LED white light device.
本发明中，LED白光器件的出射蓝光的峰值波长范围为(450-465)nm，LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.2)，故本发明能够将95％以上的有害蓝光转换为450nm以上的长波低能光线，从硬件的角度解决了蓝光危害眼睛的问题，降低了高危蓝光对用户所造成的伤害。In the present invention, the peak wavelength range of the blue light emitted by the LED white light device is (450-465) nm, and the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the wavelength range of (400-450) nm is 1 : (0.05-0.2), so the present invention can convert more than 95% of harmful blue light into long-wave low-energy light above 450nm, solve the problem of blue light harming eyes from the perspective of hardware, and reduce the damage caused by high-risk blue light to users.
相应的，本发明提供了一种LED白光器件的制备方法，其特征在于，包括：Accordingly, the present invention provides a method for manufacturing an LED white light device, which is characterized by including:
(1)将绿色荧光粉和红色荧光粉按配比混合，然后加入封装胶中，搅拌均匀，再经抽真空脱泡得到荧光胶混合物；(1) Mix the green fluorescent powder and the red fluorescent powder according to the mixing ratio, then add them to the encapsulant, stir well, and degas by vacuuming to obtain a fluorescent gel mixture;
(2)将荧光胶混合物设于置有蓝光芯片的LED支架上，经固化得到LED白光器件。(2) The fluorescent glue mixture is set on an LED bracket on which a blue light chip is placed, and an LED white light device is obtained after curing.
该制备方法采用的绿色荧光粉、红色荧光粉和蓝光芯片的技术细节同上所述，在此不再赘述。The technical details of the green phosphor, red phosphor, and blue light chip used in the preparation method are the same as those described above, and details are not described herein again.
相应的，本发明提供了一种LED背光模组，包括上述LED白光器件。该LED白光器件采用的绿色荧光粉、红色荧光粉和蓝光芯片的技术细节同上所述，在此不再赘述。Accordingly, the present invention provides an LED backlight module including the above-mentioned LED white light device. The technical details of the green phosphor, the red phosphor, and the blue light chip used by the LED white light device are the same as described above, and are not repeated here.
下面以具体实施例进一步阐述本发明The present invention is further explained below with specific examples.
实施例1Example 1
(1)将市售的氮化物绿色荧光粉(成分为：SiAlON:Eu)和氮化物红色荧光粉(成分为：(SrCa)AlSiN 3:Eu)按比例1:0.05加入到LED用封装胶中，通过搅拌使红、绿荧光粉和封装胶混合均匀，抽真空脱泡后得到荧光胶混合物。 (1) Add commercially available nitride green phosphors (composition: SiAlON: Eu) and nitride red phosphors (composition: (SrCa) AlSiN 3 : Eu) to the encapsulant for LED at a ratio of 1: 0.05. The red and green phosphors and the encapsulant are mixed uniformly by stirring, and a vacuum gel mixture is obtained after vacuum degassing.
(2)将荧光胶混合物滴入到置有蓝光芯片的LED支架中，同时放入烘箱中烘烤一定时间后使胶体混合物固化，得到防蓝光的LED白光器件。该LED器件所选用的蓝光芯片波段为：(455-470)nm，对应LED出射光谱的蓝光峰值波长为：(450-465)nm。(2) Drop the fluorescent glue mixture into the LED holder with the blue light chip, and simultaneously place it in an oven to bake for a certain period of time to cure the colloid mixture to obtain a blue light-proof LED white light device. The blue light chip band selected for this LED device is: (455-470) nm, and the blue light peak wavelength corresponding to the LED emission spectrum is: (450-465) nm.
对实施例1中的LED白光器件进行光谱测试和色域计算，结果如图2、3、4、5所示。Spectral tests and color gamut calculations were performed on the LED white light device in Example 1. The results are shown in Figures 2, 3, 4, and 5.
由图2、5和表1可知，LED白光器件的蓝光波段峰值波长460nm，绿光波段峰值波长543nm，半波宽55nm，红光波段峰值波长630nm，半波宽75nm，本发明具有蓝、绿、红三色连续光谱，更接近太阳光谱，发出的光使人感觉舒适自然，利于实现健康照明。As can be seen from Figs. 2, 5 and Table 1, the peak wavelength of the blue light band of the white LED device is 460 nm, the peak wavelength of the green light band is 543 nm, the half-wave width is 55 nm, the peak wavelength of the red light band is 630 nm, and the half-wave width is 75 nm. The invention has blue and green wavelengths. The red, three-color continuous spectrum is closer to the solar spectrum, and the light emitted makes people feel comfortable and natural, which is conducive to achieving healthy lighting.
由图3可知，所述LED白光器件的NTSC色域值≥72％，色域高，比常规LED器件高4％。It can be known from FIG. 3 that the NTSC color gamut value of the LED white light device is ≥72%, and the color gamut is high, which is 4% higher than that of a conventional LED device.
由图4可知，LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:0.057，有害蓝光含量低。As can be seen from FIG. 4, the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.057, and the harmful blue light content is low.
所述LED白光器件的白光的色度坐标范围为：CIE x:0.22-0.32以及CIE y：0.20-0.32，亮度高，色彩表现自然且具备防蓝光特性，使人眼观感更舒适。The chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
实施例2Example 2
(1)将市售的氮化物绿色荧光粉(成分为：SiAlON:Eu)和氮化物红色荧光粉(成分为：(SrCa)AlSiN 3:Eu)按比例1:0.0588加入到LED用封装胶中，通过搅拌使红、绿荧光粉和封装胶混合均匀，抽真空脱泡后得到荧光胶混合物。 (1) Add commercially available nitride green phosphors (composition: SiAlON: Eu) and nitride red phosphors (composition: (SrCa) AlSiN 3 : Eu) to the encapsulant for LEDs in a ratio of 1: 0.0588 The red and green phosphors and the encapsulant are mixed uniformly by stirring, and a vacuum gel mixture is obtained after vacuum degassing.
(2)将荧光胶混合物滴入到置有蓝光芯片的LED支架中，同时 放入烘箱中烘烤一定时间后使胶体混合物固化，得到防蓝光的LED白光器件。该LED器件所选用的蓝光芯片波段为：(455-470)nm，对应LED出射光谱的蓝光峰值波长为：(450-465)nm。(2) Drop the fluorescent glue mixture into the LED holder with the blue light chip, and place it in an oven to bake for a certain period of time to cure the colloid mixture to obtain a blue light-proof LED white light device. The blue light chip band selected for this LED device is: (455-470) nm, and the blue light peak wavelength corresponding to the LED emission spectrum is: (450-465) nm.
对实施例2的LED白光器件进行光谱测试和色域计算，结果如图6、7、8所示。Spectral tests and color gamut calculations were performed on the LED white light device of Example 2. The results are shown in Figures 6, 7, and 8.
由图6和表1可知，LED白光器件的蓝光波段峰值波长456nm，绿光波段峰值波长537nm，红光波段峰值波长630nm，半波宽75nm，本发明具有蓝、绿、红三色连续光谱，更接近太阳光谱，发出的光使人感觉舒适自然，利于实现健康照明。It can be known from FIG. 6 and Table 1 that the peak wavelength of the blue light band of the white LED device is 456 nm, the peak wavelength of the green light band is 537 nm, the peak wavelength of the red light band is 630 nm, and the half-wave width is 75 nm. The present invention has three continuous colors of blue, green, and red. Closer to the solar spectrum, the light emitted makes people feel comfortable and natural, which is conducive to achieving healthy lighting.
由图7可知，所述LED白光器件的NTSC色域值≥72％，色域高。As can be seen from FIG. 7, the NTSC color gamut value of the LED white light device is ≧ 72%, and the color gamut is high.
由图8可知，LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:0.111，有害蓝光含量低。As can be seen from FIG. 8, the ratio between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.111, and the harmful blue light content is low.
所述LED白光器件的白光的色度坐标范围为：CIE x:0.22-0.32以及CIE y：0.20-0.32，亮度高，色彩表现自然且具备防蓝光特性，使人眼观感更舒适。The chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
实施例3Example 3
(1)将市售的氮化物绿色荧光粉(成分为：SiAlON:Eu)和氮化物红色荧光粉(成分为：(SrCa)AlSiN 3:Eu)按比例1:0.5加入到LED用封装胶中，通过搅拌使红、绿荧光粉和封装胶混合均匀，抽真空脱泡后得到荧光胶混合物。 (1) Add commercially available nitride green phosphors (composition: SiAlON: Eu) and nitride red phosphors (composition: (SrCa) AlSiN 3 : Eu) to the encapsulant for LED in a ratio of 1: 0.5 The red and green phosphors and the encapsulant are mixed uniformly by stirring, and a vacuum gel mixture is obtained after vacuum degassing.
(2)将荧光胶混合物滴入到置有蓝光芯片的LED支架中，同时放入烘箱中烘烤一定时间后使胶体混合物固化，得到防蓝光的LED白光器件。该LED器件所选用的蓝光芯片波段为：(455-470)nm，对应LED出射光谱的蓝光峰值波长为：(450-465)nm。(2) Drop the fluorescent glue mixture into the LED holder with the blue light chip, and simultaneously place it in an oven to bake for a certain period of time to cure the colloid mixture to obtain a blue light-proof LED white light device. The blue light chip band selected for this LED device is: (455-470) nm, and the blue light peak wavelength corresponding to the LED emission spectrum is: (450-465) nm.
对实施例3的LED白光器件进行光谱测试和色域计算，结果如图9、10、11所示。Spectral tests and color gamut calculations were performed on the LED white light device of Example 3. The results are shown in Figures 9, 10, and 11.
由图9和表1可知，LED白光器件的蓝光波段峰值波长452nm，绿光波段峰值波长537nm，红光波段峰值波长630nm，半波宽75nm， 本发明具有蓝、绿、红三色连续光谱，更接近太阳光谱，发出的光使人感觉舒适自然，利于实现健康照明。It can be seen from FIG. 9 and Table 1 that the peak wavelength of the blue light band of the white LED device is 452 nm, the peak wavelength of the green light band is 537 nm, the peak wavelength of the red light band is 630 nm, and the half-wave width is 75 nm. Closer to the solar spectrum, the light emitted makes people feel comfortable and natural, which is conducive to achieving healthy lighting.
由图10可知，所述LED白光器件的NTSC色域值≥72％，色域高。It can be known from FIG. 10 that the NTSC color gamut value of the LED white light device is ≧ 72%, and the color gamut is high.
由图11可知，LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:0.171，有害蓝光含量低。As can be seen from FIG. 11, the ratio relationship between the energy of the spectrum of the LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: 0.171, and the harmful blue light content is low.
所述LED白光器件的白光的色度坐标范围为：CIE x:0.22-0.32以及CIE y：0.20-0.32，亮度高，色彩表现自然且具备防蓝光特性，使人眼观感更舒适。The chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32, with high brightness, natural color performance and anti-blue light characteristics, making the human eye more comfortable.
将实施例1-3与现有技术做技术对比，具体如下：The technical comparison between Embodiment 1-3 and the prior art is as follows:
(1)现有技术：采用蓝光芯片激发钇铝石镏石荧光粉(YAG粉)，混合产生白光。(1) Existing technology: a blue light chip is used to excite yttrium alumina vermiculite phosphor (YAG powder) and mix to produce white light.
(2)对比结果：(2) Comparison results:
本发明与现有技术的技术参数如下表1所示，The technical parameters of the present invention and the prior art are shown in Table 1 below.
Figure PCTCN2018111517-appb-000001
Figure PCTCN2018111517-appb-000001
结合表1和图2-11，本发明亮度高，色彩表现自然且具备防蓝光特性，能够将95％以上的有害蓝光转换为450nm以上的长波低能光线，从硬件的角度解决了蓝光危害眼睛的问题，降低了高危蓝光对用户所造成的伤害。而且，本发明具有蓝、绿、红三色连续光谱，更接近太阳光谱，发出的光使人感觉舒适自然，利于实现健康照明。Combining Table 1 and Figures 2-11, the present invention has high brightness, natural color performance, and anti-blue light properties. It can convert more than 95% of harmful blue light into long-wave low-energy light above 450 nm, which solves the problem of blue light harming the eyes from a hardware perspective Problem, reducing the damage caused to users by high-risk blue light. In addition, the present invention has three continuous colors of blue, green, and red, which are closer to the solar spectrum. The emitted light makes people feel comfortable and natural, and is conducive to achieving healthy lighting.
而现有技术的发光光谱的红光成分较少，LED显示效果颜色偏绿，色域值达68％NTSC，色彩表现力较差，且抗蓝光效果不明显。However, the red light component of the light emission spectrum of the prior art is less, the color of the LED display effect is green, the color gamut value reaches 68% NTSC, the color expression is poor, and the anti-blue light effect is not obvious.
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made. It is the protection scope of the present invention.

Claims (9)

  1. 一种LED白光器件，包括蓝光芯片和荧光粉混合物，其特征在于，所述蓝光芯片的波段为(455-470)nm；An LED white light device comprising a blue light chip and a phosphor mixture, characterized in that the wavelength range of the blue light chip is (455-470) nm;
    所述荧光粉混合物包括受激发光峰值波长范围为(525-545)nm的绿色荧光粉和受激发光峰值波长范围为(610-660)nm的红色荧光粉；The phosphor powder mixture includes a green phosphor powder having a peak wavelength range of excited light (525-545) nm and a red phosphor powder having a peak wavelength range of excited light (610-660) nm;
    所述绿色荧光粉和红色荧光粉以1:(0.05-0.5)的配比混合，并覆盖在蓝光芯片上，以使封装后的LED白光器件出射蓝光的峰值波长范围为(450-465)nm；封装后的LED白光器件的光谱的能量与(400-450)nm波长范围的蓝光光谱的能量之间的比值关系为1:(0.05-0.2)。The green phosphor and the red phosphor are mixed at a ratio of 1: (0.05-0.5) and covered on the blue light chip, so that the peak wavelength range of the blue light emitted by the packaged LED white light device is (450-465) nm ; The ratio between the energy of the spectrum of the packaged LED white light device and the energy of the blue light spectrum in the (400-450) nm wavelength range is 1: (0.05-0.2).
  2. 如权利要求1所述的LED白光器件，其特征在于，所述LED白光器件的白光的色度坐标范围为：CIE x:0.22-0.32以及CIE y：0.20-0.32。The LED white light device according to claim 1, wherein the chromaticity coordinate range of the white light of the LED white light device is: CIEx: 0.22-0.32 and CIEy: 0.20-0.32.
  3. 如权利要求1所述的LED白光器件，其特征在于，所述LED白光器件的NTSC色域值≥72％。The LED white light device according to claim 1, wherein an NTSC color gamut value of the LED white light device is ≥72%.
  4. 如权利要求1所述的LED白光器件，其特征在于，所述绿色荧光粉为氮化物绿色荧光粉、硅酸盐绿色荧光粉或铝酸盐绿色荧光粉。The LED white light device according to claim 1, wherein the green phosphor is a nitride green phosphor, a silicate green phosphor, or an aluminate green phosphor.
  5. 如权利要求4所述的LED白光器件，其特征在于，所述绿色荧光粉包括SiAlON:Eu，其峰值波长为(525-550)nm。The white LED device according to claim 4, wherein the green phosphor comprises SiAlON: Eu, and its peak wavelength is (525-550) nm.
  6. 如权利要求1所述的LED白光器件，其特征在于，所述红色荧光粉为氮化物红色荧光粉或Mn 4+掺杂氟化物红色荧光粉。 The white LED device according to claim 1, wherein the red phosphor is a nitride red phosphor or a Mn 4+ doped fluoride red phosphor.
  7. 如权利要求6所述的LED白光器件，其特征在于，所述红色 荧光粉包括(SrCa)AlSiN 3:Eu，其峰值波长为(610-660)nm。 The white LED device according to claim 6, wherein the red phosphor comprises (SrCa) AlSiN 3 : Eu, and its peak wavelength is (610-660) nm.
  8. 一种如权利要求1-7任一项所述的LED白光器件的制备方法，其特征在于，包括：The method for manufacturing an LED white light device according to any one of claims 1 to 7, further comprising:
    (1)将绿色荧光粉和红色荧光粉按配比混合，然后加入封装胶中，搅拌均匀，再经抽真空脱泡得到荧光胶混合物；(1) Mix the green fluorescent powder and the red fluorescent powder according to the mixing ratio, then add them to the encapsulant, stir well, and degas by vacuuming to obtain a fluorescent gel mixture;
    (2)将荧光胶混合物设于置有蓝光芯片的LED支架上，经固化得到LED白光器件。(2) The fluorescent glue mixture is set on an LED bracket on which a blue light chip is placed, and an LED white light device is obtained after curing.
  9. 一种LED背光模组，其特征在于，包括如权利要求1-7任一项所述的LED白光器件。An LED backlight module, comprising the LED white light device according to any one of claims 1-7.
PCT/CN2018/111517 2018-08-16 2018-10-23 Led white light device and preparation method therefor, and led backlight module WO2020034390A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810933810.0A CN109301050A (en) 2018-08-16 2018-08-16 LED white light parts and preparation method thereof, LED backlight mould group
CN201810933810.0 2018-08-16

Publications (1)

Publication Number Publication Date
WO2020034390A1 true WO2020034390A1 (en) 2020-02-20

Family

ID=65165139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/111517 WO2020034390A1 (en) 2018-08-16 2018-10-23 Led white light device and preparation method therefor, and led backlight module

Country Status (2)

Country Link
CN (1) CN109301050A (en)
WO (1) WO2020034390A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110429169A (en) * 2019-07-29 2019-11-08 旭宇光电（深圳）股份有限公司 White light LEDs
CN110456565A (en) * 2019-07-31 2019-11-15 上海天马微电子有限公司 Backlight module and manufacturing method thereof, display module and manufacturing method thereof, and display device
CN110504348A (en) * 2019-08-23 2019-11-26 旭宇光电（深圳）股份有限公司 White light LEDs and Healthy Lighting lamps and lanterns
CN111146324A (en) * 2019-11-25 2020-05-12 华中科技大学鄂州工业技术研究院 White light LED device with ultrahigh color rendering index
CN117936528A (en) * 2020-12-31 2024-04-26 惠州市聚飞光电有限公司 Fresh lighting device
CN115505304A (en) * 2021-06-23 2022-12-23 北京科技大学 Film capable of absorbing blue light and emitting red light and green light as well as preparation method and application thereof
CN115437182B (en) * 2022-09-21 2024-05-07 北京科技大学 Preparation method and application of light conversion diffusion film for backlight module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040207311A1 (en) * 2003-04-18 2004-10-21 Jung-Pin Cheng White light emitting device
CN101699154A (en) * 2009-10-15 2010-04-28 深圳雷曼光电科技股份有限公司 LED white lamp and encapsulation method thereof
CN107369742A (en) * 2017-07-18 2017-11-21 中国计量大学 A kind of high S/P values white light LEDs of high color rendering index (CRI) and its preparation method and application
CN108257948A (en) * 2017-12-29 2018-07-06 广东晶科电子股份有限公司 White light emitting diode and backlight module

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10026875B2 (en) * 2013-06-18 2018-07-17 Sharp Kabushiki Kaisha Light-source device and light-emitting device
CN104051601A (en) * 2014-06-26 2014-09-17 江门朗天照明有限公司 LED packaging light source free from damage to visual system and manufacturing method thereof
CN104537954A (en) * 2014-11-24 2015-04-22 苏州佳世达电通有限公司 Flat panel display device and backlight generation method
CN107621724A (en) * 2016-08-22 2018-01-23 深圳市欧弗德光电科技有限公司 Backlight and application containing organic green light embedded photoluminescent material and the OFED structures of organic red light embedded photoluminescent material composition
CN107623064B (en) * 2017-09-06 2020-02-07 中国科学院长春光学精密机械与物理研究所 LED light source for simulating blackbody radiation spectrum and preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040207311A1 (en) * 2003-04-18 2004-10-21 Jung-Pin Cheng White light emitting device
CN101699154A (en) * 2009-10-15 2010-04-28 深圳雷曼光电科技股份有限公司 LED white lamp and encapsulation method thereof
CN107369742A (en) * 2017-07-18 2017-11-21 中国计量大学 A kind of high S/P values white light LEDs of high color rendering index (CRI) and its preparation method and application
CN108257948A (en) * 2017-12-29 2018-07-06 广东晶科电子股份有限公司 White light emitting diode and backlight module

Also Published As

Publication number Publication date
CN109301050A (en) 2019-02-01

Similar Documents

Publication Publication Date Title
WO2020034390A1 (en) Led white light device and preparation method therefor, and led backlight module
CN107565006B (en) LED light source with sunlight visible light part spectrum structure and lamp
CN105870303B (en) Full-spectrum LED light source
WO2019109867A1 (en) White led device and manufacturing method thereof, and led lamp
CN112470296A (en) Full-spectrum white light emitting device
TWI469396B (en) Applied to the backlight of the LED light-emitting structure
CN103779346A (en) Near ultraviolet or ultraviolet excited LED light-emitting device
WO2020034391A1 (en) Led white light device and preparation method therefor, and led backlight module
JP7311818B2 (en) light emitting device
WO2024109778A1 (en) Near-natural-light led light source and lighting apparatus
CN108922955A (en) A kind of light source module group and the lighting device including the light source module group
CN112608750A (en) Full-spectrum LED fluorescent powder composition and full-spectrum white LED device
CN110395913B (en) Preparation method of fluorescent glass with layered arrangement structure for full-spectrum LED
CN110233197A (en) A kind of light source module group and the lighting device including the light source module group
CN108899311A (en) A kind of LED light source manufacturing method
CN107680959A (en) Contain the light source body of organic green light and gold-tinted embedded photoluminescent material with the OFED structures of inorganic red light fluorescent powder composition and application
WO2020220669A1 (en) Novel light emitting lamp bead and lamp
TW201000602A (en) Organic membrane for transmitting optical spectrum and LED chip package module
CN209496889U (en) A kind of light source module group and the lighting device including the light source module group
CN208460799U (en) A kind of novel light-emitting device
WO2020211876A1 (en) White light led
CN111146324A (en) White light LED device with ultrahigh color rendering index
TW200927882A (en) Phosphors and lighting apparatus
CN109786538A (en) A kind of imitative natural light LED Healthy Lighting device and preparation method thereof
KR102159984B1 (en) LED lighting source for high-rendering vision safeguard

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18930298

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18930298

Country of ref document: EP

Kind code of ref document: A1