CN110504348A - Luminaires for white LED and health lighting - Google Patents
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 267
- 239000000463 material Substances 0.000 claims abstract description 89
- 239000000843 powder Substances 0.000 claims abstract description 58
- 230000005284 excitation Effects 0.000 claims abstract description 19
- 150000004767 nitrides Chemical class 0.000 claims description 19
- XPIIDKFHGDPTIY-UHFFFAOYSA-N F.F.F.P Chemical class F.F.F.P XPIIDKFHGDPTIY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 12
- 102100032047 Alsin Human genes 0.000 claims description 10
- 101710187109 Alsin Proteins 0.000 claims description 10
- 150000004645 aluminates Chemical class 0.000 claims description 6
- 150000003568 thioethers Chemical class 0.000 claims description 6
- 229910052765 Lutetium Inorganic materials 0.000 claims description 4
- SBFDPWWVJYLRGG-UHFFFAOYSA-N [N]=O.[P] Chemical class [N]=O.[P] SBFDPWWVJYLRGG-UHFFFAOYSA-N 0.000 claims description 4
- 229910003668 SrAl Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 241001465382 Physalis alkekengi Species 0.000 abstract 1
- 238000005286 illumination Methods 0.000 abstract 1
- 238000009877 rendering Methods 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 9
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005281 excited state Effects 0.000 description 3
- DRLFMBDRBRZALE-UHFFFAOYSA-N melatonin Chemical compound COC1=CC=C2NC=C(CCNC(C)=O)C2=C1 DRLFMBDRBRZALE-UHFFFAOYSA-N 0.000 description 3
- 229960003987 melatonin Drugs 0.000 description 3
- 230000028327 secretion Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 206010057430 Retinal injury Diseases 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000002919 epithelial cell Anatomy 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 208000002780 macular degeneration Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 210000000844 retinal pigment epithelial cell Anatomy 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
- H10H20/8512—Wavelength conversion materials
- H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials
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Abstract
Description
技术领域technical field
本发明属于半导体照明技术领域，具体涉及一种白光LED和健康照明用灯具。The invention belongs to the technical field of semiconductor lighting, and in particular relates to a white light LED and a lamp for health lighting.
背景技术Background technique
随着发光二极管(Light Emitting Diode，LED)的快速发展，LED照明行业已经从对光效、节能和成本的追求，上升到对光品质、光健康、光生物安全和光环境的需求。尤其是近年LED造成的蓝光危害、人体节律紊乱、人眼视网膜损害的问题日渐显现，使行业意识到健康照明的普及刻不容缓。With the rapid development of light emitting diodes (Light Emitting Diode, LED), the LED lighting industry has risen from the pursuit of light efficiency, energy saving and cost to the demand for light quality, light health, light biological safety and light environment. Especially in recent years, the blue light hazards caused by LEDs, human rhythm disorders, and human retinal damage have become increasingly apparent, making the industry aware of the urgency of popularizing healthy lighting.
短波蓝光(430-450nm)具有极高能量，能够穿透晶状体直达视网膜。蓝光照射视网膜会产生自由基，而这些自由基会导致视网膜色素上皮细胞衰亡，上皮细胞的衰亡会导致光敏感细胞缺少养分从而引起视力损伤，造成黄斑病变，进而容易导致近视。Short-wave blue light (430-450nm) has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiating the retina will produce free radicals, and these free radicals will lead to the decline of retinal pigment epithelial cells. The decline of epithelial cells will cause light-sensitive cells to lack nutrients, resulting in visual impairment, macular degeneration, and myopia.
在教育照明及办公照明应用领域中，开发一款长波蓝光激发荧光粉实现白光的LED，减少蓝光危害并能适度抑制褪黑素分泌具有十分重要的意义。但现有荧光粉方案中，长波激发下，量子效率太低，不宜产业化应用；因此，现有技术有待改进。In the field of educational lighting and office lighting applications, it is of great significance to develop an LED that excites phosphor powder with long-wave blue light to achieve white light, which can reduce the harm of blue light and moderately inhibit the secretion of melatonin. However, in the existing phosphor solution, the quantum efficiency is too low under long-wave excitation, which is not suitable for industrial application; therefore, the existing technology needs to be improved.
发明内容Contents of the invention
本发明的目的在于提供一种白光LED和健康照明用灯具，旨在解决现有白光LED中短波蓝光激发太强，而长波蓝光激发的量子效率和光效低的技术问题。The purpose of the present invention is to provide a white light LED and a lamp for health lighting, aiming to solve the technical problem that the short-wave blue light excitation is too strong in the existing white light LED, and the quantum efficiency and light efficiency of the long-wave blue light excitation are low.
为实现上述发明目的，本发明采用的技术方案如下：For realizing above-mentioned purpose of the invention, the technical scheme that the present invention adopts is as follows:
本发明一方面提供一种白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。One aspect of the present invention provides a white light LED, including a blue light chip and a fluorescent material excited by the blue light chip, the peak wavelength of the blue light chip is 470-480nm, and the fluorescent material includes a peak wavelength suitable for excitation of 470-480nm located at 540nm-560nm yellow phosphor and red phosphor with a peak wavelength at 600-660nm, or the fluorescent material includes green phosphor with a peak wavelength at 500-540nm and red phosphor with a peak wavelength at 600-660nm suitable for excitation at 470-480nm Phosphor.
本发明提供一种由峰值波长为470-480nm的蓝光芯片激发荧光材料实现健康照明的白光LED，其中蓝光芯片峰值波长较长，相比短波蓝光危害低，光源蓝光危害能够达到Rg0标准，且位于470-480nm峰值波段能够抑制褪黑素的分泌，有利于学习和上班能够保持兴奋状态，而荧光材料中峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，或者峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，能够在470-480nm激发下显示出高量子效率，而且在保证LED高显指的条件下，能够提升白光LED的光效。The invention provides a white light LED that uses a blue light chip with a peak wavelength of 470-480nm to excite fluorescent materials to achieve healthy lighting. The peak wavelength of the blue light chip is longer, which is less harmful than short-wave blue light. The 470-480nm peak band can inhibit the secretion of melatonin, which is conducive to maintaining an excited state during study and work. In fluorescent materials, the yellow phosphor with the peak wavelength at 540nm-560nm and the red phosphor with the peak wavelength at 600-660nm are matched. Or the combination of green phosphor with a peak wavelength of 500-540nm and red phosphor with a peak wavelength of 600-660nm can show high quantum efficiency under excitation at 470-480nm, and under the condition of ensuring high CRI of LED, it can improve The light effect of white LED.
本发明另一方面提供一种健康照明用灯具，所述健康照明用灯具包括本发明所述的白光LED。Another aspect of the present invention provides a lamp for health lighting, which includes the white LED described in the present invention.
本发明提供的健康照明用灯具设置有本发明特有的白光LED，因此该健康照明用灯具显示出高量子效率，光效高，而且光效蓝光危害低，有利于学习和上班能够保持兴奋状态，在教育照明及办公照明应用领域具有很好的应用。The lamp for healthy lighting provided by the present invention is equipped with the unique white LED of the present invention, so the lamp for healthy lighting shows high quantum efficiency, high luminous efficiency, and low luminous effect blue light hazard, which is conducive to maintaining an excited state for studying and going to work. It has a good application in the field of educational lighting and office lighting applications.
附图说明Description of drawings
图1为本发明实施例提供的白光LED的结构示意图。FIG. 1 is a schematic structural diagram of a white LED provided by an embodiment of the present invention.
具体实施方式Detailed ways
为了使本发明要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
一方面，本发明实施例提供了一种白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。On the one hand, an embodiment of the present invention provides a white light LED, comprising a blue light chip and a fluorescent material excited by the blue light chip, the peak wavelength of the blue light chip is 470-480nm, and the fluorescent material includes Yellow phosphor with peak wavelength at 540nm-560nm and red phosphor with peak wavelength at 600-660nm, or the fluorescent material includes green phosphor with peak wavelength at 500-540nm and peak wavelength at 600nm suitable for excitation at 470-480nm -660nm red phosphor.
本发明实施例提供一种由峰值波长为470-480nm的蓝光芯片激发荧光材料实现健康照明的白光LED，其中蓝光芯片峰值波长较长，相比短波蓝光危害低，光源蓝光危害能够达到Rg0标准，且位于470-480nm峰值波段能够抑制褪黑素的分泌，有利于学习和上班能够保持兴奋状态，而荧光材料中峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，或者峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，能够在470-480nm激发下显示出高量子效率，而且在保证LED高显指的条件下，能够提升白光LED的光效。The embodiment of the present invention provides a white light LED that uses a blue light chip with a peak wavelength of 470-480nm to excite fluorescent materials to achieve healthy lighting. The peak wavelength of the blue light chip is longer, which is less harmful than short-wave blue light. And the 470-480nm peak band can inhibit the secretion of melatonin, which is conducive to maintaining an excited state for studying and going to work. Among the fluorescent materials, the yellow phosphor with the peak wavelength at 540nm-560nm and the red phosphor with the peak wavelength at 600-660nm Matching, or the combination of green phosphor with a peak wavelength of 500-540nm and red phosphor with a peak wavelength of 600-660nm, can show high quantum efficiency under 470-480nm excitation, and under the condition of ensuring high CRI of LED, It can improve the light efficiency of white LED.
在一实施例中，该白光LED中的荧光材料可以形成一发光层，被蓝光芯片即蓝光LED芯片激发。所述蓝光芯片可以位于封装支架内部，例如，固定在封装支架的底部，所述蓝光芯片的出光面朝向上方，在蓝光芯片的出光面的上表面可以覆盖上述荧光材料形成发光层，结构如图1所示(封装支架未画)。另外，所述蓝光芯片的个数可以是1个还可以是多个；蓝光芯片和发光层之间可以允许留有一段距离，例如，蓝光芯片和发光层之间相距预设距离，预设距离可以为范围值，蓝光芯片和发光层之间还可以设置其它结构或者材料层。作为其中一个示例，所述蓝光芯片上的发光材料层可以为平面结构，也可以为弧形结构。从光学装置中发出的光束角度可以是多个角度，如15°、30°、60°、120°、150°等等。In an embodiment, the fluorescent material in the white LED can form a light-emitting layer, which is excited by the blue chip, that is, the blue LED chip. The blue light chip can be located inside the packaging bracket, for example, fixed on the bottom of the packaging bracket, the light emitting surface of the blue light chip is facing upward, and the above-mentioned fluorescent material can be covered on the upper surface of the light emitting surface of the blue light chip to form a light emitting layer. The structure is as follows: As shown in Figure 1 (the package bracket is not drawn). In addition, the number of the blue light chip can be one or more; a certain distance can be allowed between the blue light chip and the light-emitting layer, for example, a preset distance between the blue light chip and the light-emitting layer, the preset distance It can be a range value, and other structures or material layers can also be arranged between the blue light chip and the light emitting layer. As an example, the luminescent material layer on the blue chip may be a planar structure or an arc-shaped structure. The angle of the light beam emitted from the optical device can be various angles, such as 15°, 30°, 60°, 120°, 150° and so on.
具体地，对于峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，当470-480nm激发时，上述特有峰值波长的黄色荧光粉搭配特有峰值波长的红色荧光粉其显色指数能够做到80以上。而峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉搭配，当470-480nm激发时，上述特有峰值波长的绿色荧光粉搭配特有峰值波长的红色荧光粉其显色指数能够做到90以上。Specifically, for the combination of yellow phosphor with a peak wavelength of 540nm-560nm and red phosphor with a peak wavelength of 600-660nm, when excited at 470-480nm, the above-mentioned yellow phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength Its color rendering index can reach more than 80. The green phosphor with a peak wavelength of 500-540nm is matched with the red phosphor with a peak wavelength of 600-660nm. When excited at 470-480nm, the above-mentioned green phosphor with a unique peak wavelength is matched with a red phosphor with a unique peak wavelength. The index can achieve more than 90.
在一实施例中，所述荧光材料由峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。在另一实施例中，所述荧光材料由峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉组成。In one embodiment, the fluorescent material is composed of a yellow phosphor with a peak wavelength of 540nm-560nm and a red phosphor with a peak wavelength of 600-660nm. In another embodiment, the fluorescent material is composed of a green phosphor with a peak wavelength of 500-540nm and a red phosphor with a peak wavelength of 600-660nm.
更进一步，该白光LED中蓝光芯片的峰值波长优选为475-480nm，而荧光材料由峰值波长位于540nm-550nm的黄色荧光粉和峰值波长位于610-630nm的红色荧光粉组成。或者，该白光LED中蓝光芯片的峰值波长优选为475-480nm，而荧光材料由峰值波长位于520-540nm的绿色荧光粉和峰值波长位于610-630nm的红色荧光粉组成。Furthermore, the peak wavelength of the blue chip in the white LED is preferably 475-480nm, and the fluorescent material is composed of yellow phosphor powder with peak wavelength at 540nm-550nm and red phosphor powder with peak wavelength at 610-630nm. Alternatively, the peak wavelength of the blue chip in the white LED is preferably 475-480nm, and the fluorescent material is composed of green phosphor with a peak wavelength at 520-540nm and red phosphor with a peak wavelength at 610-630nm.
在白光LED中的荧光材料由黄色荧光粉和红色荧光粉组成的实施例中，所述黄色荧光粉为Ce3+激活的铝酸盐荧光粉和Ce3+激活的氮化物荧光粉中的任意一种；所述红色荧光粉为Eu2+激活的氮化物荧光粉、Eu3+激活的氧化物荧光粉和Mn4+激活的氟化物荧光粉中的任意一种；上述黄色荧光粉和红色荧光粉在470-480nm激发条件下，其激发效率相对较高。In the embodiment where the fluorescent material in the white LED is composed of yellow phosphor and red phosphor, the yellow phosphor is any one of Ce 3+ activated aluminate phosphor and Ce 3+ activated nitride phosphor. One; the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; the above yellow phosphor and red The excitation efficiency of the phosphor is relatively high under the excitation condition of 470-480nm.
在一实施例中，所述荧光材料中的黄色荧光粉和红色荧光粉的质量比为1：(0.1～0.5)。上述黄色荧光粉和红色荧光粉的质量比范围内，能够实现该白光LED的色温控制在2000K-6500K范围内。In one embodiment, the mass ratio of the yellow fluorescent powder and the red fluorescent powder in the fluorescent material is 1:(0.1˜0.5). Within the mass ratio range of the above-mentioned yellow phosphor powder and red phosphor powder, the color temperature of the white light LED can be controlled within the range of 2000K-6500K.
对于上述黄色荧光粉和红色荧光粉：所述黄色荧光粉为Ce3+激活的铝酸盐荧光粉，且所述Ce3+激活的铝酸盐荧光粉选自Y3Al5O12:Ce3+、(Y,Lu)3Al5O12:Ce3+和Y3(Al,Ga)5O12:Ce3+中的至少一种；或者，所述黄色荧光粉为Ce3+激活的氮化物荧光粉，且所述Ce3+激活的氮化物荧光粉选自La3Si6N11:Ce3+、Y3Si6N11:Ce3+、Lu3Si6N11:Ce3+、(La,Lu)3Si6N11:Ce3+和(La,Y)3Si6N11:Ce3+的任一种。而所述红色荧光粉为Eu2+激活的氮化物荧光粉，且所述Eu2+激活的氮化物荧光粉选自Sr2Si5N8:Eu2+、CaAlSiN3:Eu2+和(Sr,Ca)AlSiN3:Eu2+中的至少一种；或者，所述红色荧光粉为Eu3+激活的氧化物荧光粉，且所述Eu3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O4:Eu3+；或者，所述红色荧光粉为Mn4+激活的氟化物荧光粉，且所述Mn4+激活的氟化物荧光粉选自K2SiF6:Mn4+、K2GeF6:Mn4+和K2(Si,Ge)F6:Mn4+中的至少一种。For the above yellow phosphor and red phosphor: the yellow phosphor is Ce 3+ activated aluminate phosphor, and the Ce 3+ activated aluminate phosphor is selected from Y 3 Al 5 O 12 :Ce 3+ , (Y,Lu) 3 Al 5 O 12 :Ce 3+ and Y 3 (Al,Ga) 5 O 12 :Ce 3+ at least one; or, the yellow phosphor is activated by Ce 3+ Nitride phosphor, and the Ce 3+ activated nitride phosphor is selected from La 3 Si 6 N 11 :Ce 3+ , Y 3 Si 6 N 11 :Ce 3+ , Lu 3 Si 6 N 11 :Ce Any of 3+ , (La,Lu) 3 Si 6 N 11 :Ce 3+ and (La,Y) 3 Si 6 N 11 :Ce 3+ . The red phosphor is Eu 2+ activated nitride phosphor, and the Eu 2+ activated nitride phosphor is selected from Sr 2 Si 5 N 8 :Eu 2+ , CaAlSiN 3 :Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+ ; or, the red phosphor is Eu 3+ activated oxide phosphor, and the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+ ; or, the red phosphor is Mn 4+ activated fluoride phosphor, and the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : at least one of Mn 4+ , K 2 GeF 6 :Mn 4+ , and K 2 (Si,Ge)F 6 :Mn 4+ .
在一优选实施例中，白光LED中的荧光材料由黄色荧光粉和红色荧光粉组成，所述黄色荧光粉为La3Si6N11:Ce3+，且所述红色荧光粉为(Y,Gd)(W,P)O4:Eu3+。采用La3Si6N11:Ce3+黄色荧光粉和(Y,Gd)(W,P)O4:Eu3+红色荧光粉进行组合搭配，其激发效率在470nm和480nm处较现有铝酸盐黄粉和氮化物红粉高，能够实现白光LED高光效方案。In a preferred embodiment, the fluorescent material in the white LED is composed of yellow phosphor and red phosphor, the yellow phosphor is La 3 Si 6 N 11 :Ce 3+ , and the red phosphor is (Y, Gd)(W,P)O 4 :Eu 3+ . Using La 3 Si 6 N 11 :Ce 3+ yellow phosphor and (Y,Gd)(W,P)O 4 :Eu 3+ red phosphor for combination, its excitation efficiency at 470nm and 480nm is higher than that of existing aluminum Salt yellow powder and nitride red powder are high, which can realize the high light efficiency scheme of white light LED.
在白光LED中的荧光材料由绿色荧光粉和红色荧光粉组成的实施例中，所述绿色荧光粉为Eu2+激活的氮氧化物荧光粉和Eu2+激活的硫化物荧光粉中的任意一种；所述红色荧光粉为Eu2+激活的氮化物荧光粉、Eu3+激活的氧化物荧光粉和Mn4+激活的氟化物荧光粉中的任意一种；上述绿色荧光粉和红色荧光粉在在470-480nm处的激发效果更好，封装白光LED时其光效更高。In the embodiment where the fluorescent material in the white LED is composed of green phosphor and red phosphor, the green phosphor is any one of Eu 2+ activated nitrogen oxide phosphor and Eu 2+ activated sulfide phosphor. One; the red phosphor is any one of Eu 2+ activated nitride phosphor, Eu 3+ activated oxide phosphor and Mn 4+ activated fluoride phosphor; the above green phosphor and red The excitation effect of the phosphor is better at 470-480nm, and the light efficiency is higher when the white light LED is packaged.
在一实施例中，所述荧光材料中的绿色荧光粉和红色荧光粉的质量比为1：(0.05～0.5)。上述绿色荧光粉和红色荧光粉的质量比范围内，能够实现该白光LED的色温控制在2000K-6500K范围内。In one embodiment, the mass ratio of the green fluorescent powder and the red fluorescent powder in the fluorescent material is 1:(0.05˜0.5). The color temperature of the white LED can be controlled within the range of 2000K-6500K within the mass ratio range of the above-mentioned green phosphor powder and red phosphor powder.
对于上述绿色荧光粉和红色荧光粉：所述绿色荧光粉为Eu2+激活的氮氧化物荧光粉，且所述Eu2+激活的氮氧化物荧光粉选自β-Sialon:Eu2+；或者，所述绿色荧光粉为Eu2+激活的硫化物荧光粉，且所述Eu2+激活的硫化物荧光粉选自SrGa2S4:Eu2+和SrAl2S4:Eu2+中的至少一种。而所述红色荧光粉为Eu2+激活的氮化物荧光粉，且所述Eu2+激活的氮化物荧光粉选自Sr2Si5N8:Eu2+、CaAlSiN3:Eu2+和(Sr,Ca)AlSiN3:Eu2+中的至少一种；或者，所述红色荧光粉为Eu3+激活的氧化物荧光粉，且所述Eu3+激活的氧化物荧光粉选自(Y,Gd)(W,P)O4:Eu3+；或者，所述红色荧光粉为Mn4+激活的氟化物荧光粉，且所述Mn4+激活的氟化物荧光粉选自K2SiF6:Mn4+、K2GeF6:Mn4+和K2(Si,Ge)F6:Mn4+中的至少一种。For the above-mentioned green phosphor and red phosphor: the green phosphor is Eu 2+ activated nitrogen oxide phosphor, and the Eu 2+ activated nitrogen oxide phosphor is selected from β-Sialon:Eu 2+ ; Alternatively, the green phosphor is Eu 2+ activated sulfide phosphor, and the Eu 2+ activated sulfide phosphor is selected from SrGa 2 S 4 :Eu 2+ and SrAl 2 S 4 :Eu 2+ at least one of . The red phosphor is Eu 2+ activated nitride phosphor, and the Eu 2+ activated nitride phosphor is selected from Sr 2 Si 5 N 8 :Eu 2+ , CaAlSiN 3 :Eu 2+ and ( Sr, Ca) AlSiN 3 : at least one of Eu 2+ ; or, the red phosphor is Eu 3+ activated oxide phosphor, and the Eu 3+ activated oxide phosphor is selected from (Y ,Gd)(W,P)O 4 :Eu 3+ ; or, the red phosphor is Mn 4+ activated fluoride phosphor, and the Mn 4+ activated fluoride phosphor is selected from K 2 SiF 6 : at least one of Mn 4+ , K 2 GeF 6 :Mn 4+ , and K 2 (Si,Ge)F 6 :Mn 4+ .
在一优选实施例中，所述绿色荧光粉为β-Sialon:Eu2+或SrGa2S4:Eu2+，且所述红色荧光粉为(Y,Gd)(W,P)O4:Eu3+。绿色荧光粉为β-Sialon:Eu2+或SrGa2S4:Eu2+的在470-480nm均具备较高的激发效率，和红色荧光粉(Y,Gd)(W,P)O4:Eu3+搭配，封装白光LED光效更高。In a preferred embodiment, the green phosphor is β-Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+ , and the red phosphor is (Y,Gd)(W,P)O 4 : Eu 3+ . The green phosphor is β-Sialon:Eu 2+ or SrGa 2 S 4 :Eu 2+ with high excitation efficiency at 470-480nm, and the red phosphor (Y,Gd)(W,P)O 4 : With Eu 3+ , the luminous efficiency of packaged white LED is higher.
另一方面，本发明实施例还提供了一种健康照明用灯具，所述健康照明用灯具包括本发明实施例所述的白光LED。On the other hand, the embodiment of the present invention also provides a lamp for healthy lighting, which includes the white LED described in the embodiment of the present invention.
具体地，本发明实施例的所述健康照明用灯具中设置的白光LED包括蓝光芯片和被所述蓝光芯片激发的荧光材料，所述蓝光芯片的峰值波长为470-480nm，所述荧光材料包括适合470-480nm激发的峰值波长位于540nm-560nm的黄色荧光粉和峰值波长位于600-660nm的红色荧光粉，或者所述荧光材料包括适合470-480nm激发的峰值波长位于500-540nm的绿色荧光粉和峰值波长位于600-660nm的红色荧光粉。该健康照明用灯具中，白光LED的荧光材料选择参见上文的详细阐述。Specifically, the white light LED provided in the health lighting lamp of the embodiment of the present invention includes a blue chip and a fluorescent material excited by the blue chip, the peak wavelength of the blue chip is 470-480nm, and the fluorescent material includes A yellow phosphor with a peak wavelength of 540nm-560nm suitable for 470-480nm excitation and a red phosphor with a peak wavelength of 600-660nm, or the fluorescent material includes green phosphor with a peak wavelength of 500-540nm suitable for 470-480nm excitation And a red phosphor with a peak wavelength at 600-660nm. In the lighting fixture for health lighting, please refer to the detailed description above for the selection of the fluorescent material of the white LED.
本发明实施例提供的健康照明用灯具设置有本发明实施例特有的白光LED，因此该健康照明用灯具显示出高量子效率，光效高，而且光效蓝光危害低，有利于学习和上班能够保持兴奋状态，在教育照明及办公照明应用领域具有很好的应用。The lamps for healthy lighting provided by the embodiments of the present invention are equipped with white LEDs unique to the embodiments of the present invention, so the lamps for healthy lighting show high quantum efficiency, high luminous efficiency, and low luminous effect blue light hazards, which is conducive to learning and working. Keep excited, it has a good application in the field of educational lighting and office lighting applications.
本发明先后进行过多次试验，现举一部分试验结果作为参考对发明进行进一步详细描述，下面结合具体实施例进行详细说明。The present invention has been tested many times successively, and a part of the test results are given as a reference to further describe the invention in detail, and will be described in detail below in conjunction with specific examples.
实施例1Example 1
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为La3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.2。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is La 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the yellow The mass ratio of phosphor to red phosphor is 1:0.2. Its color rendering index and color temperature are shown in Table 1.
实施例2Example 2
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.22。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the yellow The mass ratio of phosphor to red phosphor is 1:0.22. Its color rendering index and color temperature are shown in Table 1.
实施例3Example 3
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Lu3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为Sr2Si5N8:Eu2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.25。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is Lu 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm; the yellow phosphor The mass ratio of pink to red phosphor is 1:0.25. Its color rendering index and color temperature are shown in Table 1.
实施例4Example 4
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(Y,Lu)3Al5O12:Ce3+峰值波长位于545-550nm之间；红色荧光粉为(Y,Gd)(W,P)O4:Eu3+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is (Y,Lu) 3 Al 5 O 12 :Ce 3+ with peak wavelength between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ , with peak wavelength Located between 620-630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.34. Its color rendering index and color temperature are shown in Table 1.
实施例5Example 5
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y3Al5O12:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为K2SiF6:Mn4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is Y 3 Al 5 O 12 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is K 2 SiF 6 :Mn 4+ , the peak wavelength is between 620-630nm; the yellow phosphor and The mass ratio of red phosphor is 1:0.34. Its color rendering index and color temperature are shown in Table 1.
实施例6Example 6
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(La,Y)3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为K2GeF6:Mn4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.35。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is (La,Y) 3 Si 6 N 11 :Ce 3+ , with a peak wavelength between 545-550nm; the red phosphor is K 2 GeF 6 :Mn 4+ , with a peak wavelength between 620-630nm; The mass ratio of yellow phosphor to red phosphor is 1:0.35. Its color rendering index and color temperature are shown in Table 1.
实施例7Example 7
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为Y3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为K2(Si,Ge)F6:Mn4+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is Y 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm ; The mass ratio of yellow phosphor to red phosphor is 1:0.34. Its color rendering index and color temperature are shown in Table 1.
实施例8Example 8
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为La3Si6N11:Ce3+，峰值波长位于545-550nm之间；红色荧光粉为(Y,Gd)(W,P)O4:Eu3+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.36。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is La 3 Si 6 N 11 :Ce 3+ , the peak wavelength is between 545-550nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ , the peak wavelength is between 620- Between 630nm; the mass ratio of yellow phosphor to red phosphor is 1:0.36. Its color rendering index and color temperature are shown in Table 1.
实施例9Example 9
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为黄色荧光粉和红色荧光粉的组合。黄色荧光粉为(La,Lu)3Si6N11:Ce，峰值波长位于545-550nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之间；黄色荧光粉与红色荧光粉的质量比为1：0.24。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of yellow phosphor powder and red phosphor powder. The yellow phosphor is (La,Lu) 3 Si 6 N 11 :Ce, the peak wavelength is between 545-550nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm ; The mass ratio of yellow phosphor to red phosphor is 1:0.24. Its color rendering index and color temperature are shown in Table 1.
实施例10Example 10
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为β-Sialon:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.26。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is β-Sialon:Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the green phosphor and The mass ratio of red phosphor is 1:0.26. Its color rendering index and color temperature are shown in Table 1.
实施例11Example 11
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.26。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the green phosphor is The mass ratio to red phosphor is 1:0.26. Its color rendering index and color temperature are shown in Table 1.
实施例12Example 12
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrAl2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为(Sr,Ca)AlSiN3:Eu2+，峰值波长位于620-630nm之；绿色荧光粉与红色荧光粉的质量比为1：0.23。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrAl 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Sr,Ca)AlSiN 3 :Eu 2+ , the peak wavelength is between 620-630nm; the green phosphor and The mass ratio of red phosphor is 1:0.23. Its color rendering index and color temperature are shown in Table 1.
实施例13Example 13
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为Sr2Si5N8:Eu2+，峰值波长位于620-630nm之间；；绿色荧光粉与红色荧光粉的质量比为1：0.25。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is Sr 2 Si 5 N 8 :Eu 2+ , the peak wavelength is between 620-630nm;; the green phosphor is The mass ratio with red phosphor is 1:0.25. Its color rendering index and color temperature are shown in Table 1.
实施例14Example 14
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为(Y,Gd)(W,P)O4:Eu3+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.34。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ , the peak wavelength is between 620-630nm between; the mass ratio of green phosphor to red phosphor is 1:0.34. Its color rendering index and color temperature are shown in Table 1.
实施例15Example 15
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为K2SiF6:Mn4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.35。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 SiF 6 :Mn 4+ , the peak wavelength is between 620-630nm; the green phosphor and red phosphor The mass ratio of powder is 1:0.35. Its color rendering index and color temperature are shown in Table 1.
实施例16Example 16
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为K2GeF6:Mn4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.37。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 GeF 6 :Mn 4+ , the peak wavelength is between 620-630nm; the green phosphor and red phosphor The mass ratio of powder is 1:0.37. Its color rendering index and color temperature are shown in Table 1.
实施例17Example 17
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为SrGa2S4:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为K2(Si,Ge)F6:Mn4+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.38。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is SrGa 2 S 4 :Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is K 2 (Si,Ge)F 6 :Mn 4+ , the peak wavelength is between 620-630nm; the green The mass ratio of phosphor to red phosphor is 1:0.38. Its color rendering index and color temperature are shown in Table 1.
实施例18Example 18
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为绿色荧光粉和红色荧光粉的组合。绿色荧光粉为β-Sialon:Eu2+，峰值波长位于520-540nm之间；红色荧光粉为(Y,Gd)(W,P)O4:Eu3+，峰值波长位于620-630nm之间；绿色荧光粉与红色荧光粉的质量比为1：0.36。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, its chip peak wavelength is located at 475-480nm, and its fluorescent material is a combination of green phosphor powder and red phosphor powder. The green phosphor is β-Sialon:Eu 2+ , the peak wavelength is between 520-540nm; the red phosphor is (Y,Gd)(W,P)O 4 :Eu 3+ , the peak wavelength is between 620-630nm ; The mass ratio of green phosphor to red phosphor is 1:0.36. Its color rendering index and color temperature are shown in Table 1.
对比例1Comparative example 1
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为La3Si6N11:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is La 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例2Comparative example 2
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y3Si6N11:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is Y 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例3Comparative example 3
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Lu3Si6N11:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is Lu 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例4Comparative example 4
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(La,Lu)3Si6N11:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is (La,Lu) 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例5Comparative example 5
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(La,Y)3Si6N11:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is (La,Y) 3 Si 6 N 11 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例6Comparative example 6
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y3Al5O12:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is Y 3 Al 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例7Comparative example 7
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为(Y,Lu)3Al5O12:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is (Y,Lu) 3 Al 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is at 545-555nm. Its color rendering index and color temperature are shown in Table 1.
对比例8Comparative example 8
一种健康照明用白光LED，包括蓝光芯片和被所述蓝光芯片激发的荧光材料。具体地，其芯片峰值波长位于475-480nm，其荧光材料为Y3(Al,Ga)5O12:Ce3+黄色荧光粉，峰值波长位于545-555nm之间。其显色指数和色温如表1所示。A white light LED for health lighting, comprising a blue light chip and a fluorescent material excited by the blue light chip. Specifically, the peak wavelength of the chip is at 475-480nm, the fluorescent material is Y 3 (Al,Ga) 5 O 12 :Ce 3+ yellow phosphor, and the peak wavelength is between 545-555nm. Its color rendering index and color temperature are shown in Table 1.
上述实施例和对比例中白光LED的性能测试结果如表1所示。Table 1 shows the performance test results of the white light LEDs in the above examples and comparative examples.
表1Table 1
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
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Application publication date: 20191126 |