CN106098907A - High colour gamut phosphor combination, white light LEDs and preparation method thereof - Google Patents
High colour gamut phosphor combination, white light LEDs and preparation method thereof Download PDFInfo
- Publication number
- CN106098907A CN106098907A CN201610414233.5A CN201610414233A CN106098907A CN 106098907 A CN106098907 A CN 106098907A CN 201610414233 A CN201610414233 A CN 201610414233A CN 106098907 A CN106098907 A CN 106098907A
- Authority
- CN
- China
- Prior art keywords
- fluorescent powder
- fluorescent
- white light
- powder
- silicate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 171
- 239000000463 material Substances 0.000 claims abstract description 86
- 239000003292 glue Substances 0.000 claims abstract description 64
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011591 potassium Substances 0.000 claims abstract description 28
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 28
- 239000002253 acid Substances 0.000 claims abstract description 27
- 239000000084 colloidal system Substances 0.000 claims abstract description 27
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005303 weighing Methods 0.000 claims abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 60
- 239000000741 silica gel Substances 0.000 claims description 60
- 229910002027 silica gel Inorganic materials 0.000 claims description 60
- 229910052917 strontium silicate Inorganic materials 0.000 claims description 28
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 17
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000391 magnesium silicate Substances 0.000 claims description 4
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 4
- 235000019792 magnesium silicate Nutrition 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 1
- 125000005624 silicic acid group Chemical group 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229920002379 silicone rubber Polymers 0.000 description 23
- 239000004945 silicone rubber Substances 0.000 description 23
- 238000002474 experimental method Methods 0.000 description 17
- 238000001228 spectrum Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009877 rendering Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- -1 halogen silicate Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/61—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Led Device Packages (AREA)
Abstract
The present invention relates to a kind of white light LEDs backlight technology field, particularly to a kind of high colour gamut phosphor combination, this phosphor combination includes that mass ratio is (1～4): (0.5～2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), wherein red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate.The present invention also provides for a kind of white light LEDs, and it includes the fluorescent glue prepared by above-mentioned phosphor combination.The present invention farther includes the preparation method of white light LEDs, it includes weighing mass ratio for (1～4): (0.5～2): above-mentioned red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), obtain fluorescent glue after being mixed with colloid by above-mentioned fluorescent material, and use fluorescent glue to prepare required white light LEDs further.The high colour gamut phosphor combination of the present invention and white light LEDs preparation method can obtain high colour gamut white light LEDs, have color saturation higher, more life-like advantage.
Description
[technical field]
The present invention relates to white light LEDs backlight technology field, particularly to a kind of high colour gamut phosphor combination, white light LEDs and
Its preparation method.
[background technology]
Existing market is increasing to the demand of white light LEDs.The generally main implementation of white light LEDs has following several: 1,
Realizing white light by the mixing of Red Green Blue LED chip, by the chip package by these three kinds of colors, major advantage is aobvious
Color is good, but relatively costly, and the light decay of three kinds of color LED chip is different, thus easily produces the defects such as metachromatism；
2, in order to make LED product color more perfect, color intensity is more rich, color closer to real world, numerous research and development technologies
Personnel are devoted to find the color gamut value improving LED product, by utilizing ultraviolet light or near ultraviolet excitated three primary color phosphor, thus
Sending white light, this method is decided by the performance of three primary color phosphor, although have high colour gamut and preparation technology is simple, but
The shortcomings such as it is low that it exists luminous efficiency, and temperature stability is poor, ultraviolet light easily leakage.3, by blue-light LED chip is excited Huang
Color fluorescent material sends gold-tinted, and the residue blue light that gold-tinted sends with chip again is combined into white light.This scheme efficiency is the highest, but by
In lacking HONGGUANG component, spectrum is the widest, the turgor of its color about at 60%-70%, the bright-coloured degree of its picture and forcing
True property is poor, thus can not meet the technological requirement of all colour temperatures, and therefore its application scenario has certain limitation.
Therefore, on the whole, it is achieved the method for high colour gamut white light LEDs there is also the biggest problem, need people at this base
Continue innovation research and development on plinth, overcome these technical barriers.
[summary of the invention]
For overcoming the technical barrier that existing LED product colour gamut area coverage is less, the invention provides a kind of LED product color
High colour gamut phosphor combination that territory area coverage is big, white light LEDs and preparation method thereof.
The present invention solves that the scheme of technical problem is to provide a kind of high colour gamut phosphor combination, it includes that mass ratio is (1
～4): (0.5～2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), described red light fluorescent powder is fluorine
Germanic acid potassium, yellow fluorescent powder is silicate.
Preferably, one or more during described green light fluorescent powder is halogen silicate, sulfide, silicate and nitrogen oxides
Mixture, described silicate is the mixture of one or more in strontium silicate, magnesium silicate and strontium silicate barium.
Preferably, described green light fluorescent powder may further be Sialon green light fluorescent powder, and described yellow fluorescent powder can be further
For strontium silicate, the mean diameter of described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder is 5um～30um.
Preferably, the mass ratio of described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder may further be (1～3):
(0.5～1.5): (0.5～1.5).
The present invention solves that the yet another aspect of technical problem is to provide a kind of white light LEDs preparation method, it includes following step
Rapid: to weigh mass ratio for (1～4): (0.5～2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), its
In, described red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate, and above-mentioned fluorescent material and colloid are mixed to get fluorescence
Glue, uses described fluorescent glue to prepare required white light LEDs.
Preferably, described colloid is silica gel, the quality of described fluorescent material account for fluorescent material and silica gel gross mass 30%～
50%.
Preferably, described in be mixed into ball milling mixing, mixing time add at least one abrading-ball, described abrading-ball a diameter of 3～
10mm。
Preferably, described ball milling mixing temperature is 30 DEG C～60 DEG C.
The present invention solves that the yet another aspect of technical problem is to provide a kind of white light LEDs, it includes fluorescent glue, described fluorescence
Glue includes that mass ratio is (1～4): (0.5～2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), its
In, described red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate.
Preferably, described white light LEDs is sent white light by blue light or ultraviolet excitation.
Compared with prior art, one provided by the present invention high colour gamut phosphor combination, wherein, red light fluorescent powder, Huang
Emitting phosphor and green light fluorescent powder mass ratio are (1～4): (0.5～2): (0.5～2), and described red light fluorescent powder is fluogermanic acid
Potassium, yellow fluorescent powder is silicate and carries out being mixed to get fluorescent glue by described phosphor combination and colloid, and adopts further
Required white light LEDs is prepared with described fluorescent glue, by using above-mentioned technique to be packaged into white light LEDs, the spectrum of its white light LEDs
Absworption peak can narrow further.Owing to when the half-wave width of fluorescent material is the narrowest, its whole spectrum then trends towards monochromatic spectrum,
The excitation that now fluorescent material is corresponding is the highest, and the white-light spectrum that thus fluorescent material is mixed into is then closer to preferable white light light
Spectrum, the turgor of its color can reach more than 90%, and bright-coloured degree and the degree true to nature of its picture are higher.
[accompanying drawing explanation]
Fig. 1 is the spectrogram of common normal white light encapsulating products.
Fig. 2 is the spectrogram corresponding to experimental group 1 of the present invention.
[detailed description of the invention]
In order to realize the purpose of the present invention, technical scheme and advantage are clearer, real below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only in order to explain this
Bright, it is not intended to limit the present invention.
First embodiment of the invention provides a kind of high colour gamut phosphor combination, and it includes that mass ratio is (1～4): (0.5～
2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), wherein, described red light fluorescent powder is fluogermanic acid potassium,
Yellow fluorescent powder is silicate.
Further, the mass ratio of red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder is (1～3): (0.5～
1.5): (0.5～1.5).In some preferred embodiments of the present invention, can be described red light fluorescent powder, green light fluorescent powder and Huang
The quality of emitting phosphor accounts for the 64% of fluorescent material gross mass respectively, and 16%, 20%.Can be again described red light fluorescent powder, green glow
The quality of fluorescent material and yellow fluorescent powder accounts for the 58.4% of fluorescent material gross mass respectively, and 17.2%, 24.4%.Can also is that described
The quality of red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder accounts for the 68% of fluorescent material gross mass respectively, and 14%, 18%.Also
Can be that the quality of described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder accounts for the 52% of fluorescent material gross mass respectively,
22%, 26%.
Preferably, described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder account for the 60% of fluorescent material total amount respectively,
18% and 22%.
In the present invention, described green light fluorescent powder can be the one in halogen silicate, sulfide, silicate and nitrogen oxides
Or several combinations.In particular embodiments of the invention, described green light fluorescent powder concretely Sialon.
Preferably, described silicate is the mixture of one or more in strontium silicate, magnesium silicate and strontium silicate barium, at this
Inventing in some specific embodiments, described yellow fluorescent powder may further be strontium silicate.
Preferably, the mean diameter of described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder is 5um～30um.
In some preferably embodiment, the mean diameter of red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder can be further
16um～25um.
The preparation method of white light LEDs that the second embodiment of the present invention provides is: weigh mass ratio for (1～4): (0.5～
2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), wherein, described red light fluorescent powder is fluogermanic acid potassium,
Yellow fluorescent powder is silicate, above-mentioned fluorescent material and colloid is mixed to get fluorescent glue, uses described fluorescent glue to prepare institute
Need white light LEDs.
In the present invention, described fluorescent material and colloid carrying out mixed glue, wherein the quality of fluorescent material accounts for fluorescent material and colloid
The 30%～50% of total amount.
Described colloid can be including but not limited to: organic silica gel and inorganic silica gel, and wherein, organic silica gel includes: silicone rubber,
The mixture of one or more in silicones and silicone oil, inorganic silica gel includes in Type B silica gel, silochrom and Kiselgel A
The mixture of one or more.Described organic silica gel is (1～4) with the mixing quality ratio of described inorganic silica gel: (2～7).More enter
One step ground, described organic silica gel is (1～2) with the mixing quality ratio of described inorganic silica gel: (5～7).In the present invention, some are concrete
Embodiment in, described colloid concretely silicone rubber and Type B silica gel mix, with mass ratio, the colloid obtained for 1:7, can be also
Silicone rubber, Kiselgel A mix, with mass ratio, the colloid obtained with Type B silica gel for 1:1:5.
In some embodiments of the invention, in order to make fluorescent glue mixing more uniform, can add at least during mixed glue
One abrading-ball, the material selection zirconium oxide of abrading-ball.It is good that zirconium oxide has high tenacity, anti-wear performance.Ball radius be preferably 3～
10mm, because ball radius is the biggest, it is impossible to reaching mixed glue uniform, ball radius is the least, can may cause glimmering during mixed glue
The pulverizing of light powder, it is impossible to the requirement such as brightness reaching later stage packaging part.Similarly, also there is shadow to mixed adhesive process in the quantity of abrading-ball
Ring.When ball radius is less, abrading-ball quantity can be the most；When ball radius is bigger, abrading-ball quantity can be relatively fewer.As at this
Invent some preferably in embodiment, the quantity of the abrading-ball of a diameter of 3～5mm with a diameter of 5～10mm abrading-ball quantity it
Than being (2～6): (1～3).
During mixed glue, temperature is preferably arranged to 30～60 DEG C, because at such a temperature, silica gel viscosity is relatively low, is beneficial to mixing.
Finally by mixed glue uniformly after described fluorescent glue inject be provided with the LED support of chip in be packaged, specifically,
By glue in described LED support base point, then on described LED support point, a LED chip is fixed at the position of glue.Enter
One step ground, by corresponding with the positive pole of described LED support for the positive pole of described LED chip welding, simultaneously by the negative pole of described LED chip
Welding corresponding with the negative pole of described LED support.Described fluorescent glue injects LED support planted agent and covers described LED chip.Envelope is filled glimmering
LED support after optical cement toasts in being placed in baking box, makes fluorescent glue solidify, obtains LED product.
Preferably, in the preparation method of the white light LEDs of the present invention, LED chip is blue chip or black light chip.?
Some are preferably in embodiment, and LED chip is blue chip.
The third embodiment of the present invention provides a white light LEDs product, described white light LEDs product it include fluorescent glue, described
Fluorescent glue includes that mass ratio is (1～4): (0.5～2): the red light fluorescent powder of (0.5～2), green light fluorescent powder and gold-tinted fluorescence
Powder, wherein, described red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate.
Preferably, described white light LEDs is sent white light by by blue light or ultraviolet excitation fluorescent material, described white light LEDs
White color purity is higher, and its white-light spectrum is close to ideal white light, and its color gamut value can reach more than 90%.
For the preparation method further instruction to white light LEDs provided by the present invention, the present invention provides following concrete
Experimental group.
Experimental group 1: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 1.26g, Sialon green light fluorescent powder 0.42g, strontium silicate yellow fluorescent powder 0.42g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 60%, 20% and 20% of fluorescent material gross mass respectively.With silica gel, fluorescent material is carried out ball milling mix.Use diameter
It it is the zirconium oxide balls of 3～10mm.Being injected by fluorescent glue in the LED support being provided with blue chip, fluorescent glue covers blue light core
Sheet, baking envelope fills the LED support of fluorescent glue, makes fluorescent glue solidification obtain LED product.
Experimental group 2: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 1.05g, Sialon green light fluorescent powder 0.53g, strontium silicate yellow fluorescent powder 0.52g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 50%, 25% and 25% of fluorescent material gross mass respectively.Other condition is identical with the experiment condition of experimental group 1.
Experimental group 3: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 1.47g, Sialon green light fluorescent powder 0.32g, strontium silicate yellow fluorescent powder 0.31g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 70%, 15% and 15% of fluorescent material gross mass respectively.Other condition is identical with the experiment condition of experimental group 1.
Experimental group 4: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 3.3g, fluorescent material
Quality account for silica gel and the 40% of fluorescent material gross mass, other condition is identical with the experiment condition of experimental group 1.
Experimental group 5: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 5.0g, fluorescent material
Quality account for silica gel and the 50% of fluorescent material gross mass, other condition is identical with the experiment condition of experimental group 1.
Matched group 1: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 0.21g, Sialon green light fluorescent powder 0.95g, strontium silicate yellow fluorescent powder 0.94g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 10% of fluorescent material gross mass, 45% and 45% respectively.Other condition is identical with the experiment condition of experimental group 1.
Matched group 2: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 0.42g, Sialon green light fluorescent powder 0.84g, strontium silicate yellow fluorescent powder 0.84g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 20% of fluorescent material gross mass, 40% and 40% respectively.Other condition is identical with the experiment condition of experimental group 1.
Matched group 3: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 2.1g (fluogermanic acid
Potassium red light fluorescent powder 1.89g, Sialon green light fluorescent powder 0.11g, strontium silicate yellow fluorescent powder 0.10g).The quality of fluorescent material accounts for glimmering
The 30% of the gross mass of light powder and colloid, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder
Quality account for the 90% of fluorescent material gross mass, 5% and 5% respectively.Other condition is identical with the experiment condition of experimental group 1.
Matched group 4: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 1.7g before mixed glue,
The quality of fluorescent material accounts for the 25% of total amount, and other condition is identical with the experiment condition of experimental group 1.
Matched group 5: weigh silica gel 5.0g (including 0.63g silicone rubber and 4.37gB type silica gel), fluorescent material 6.1g before mixed glue,
The quality of fluorescent material accounts for the 55% of total amount, and other condition is identical with the experiment condition of experimental group 1.
Matched group 6: weigh silica gel 5.0g (including 0g silicone rubber and 5.0gB type silica gel), fluorescent material 2.1g, fluorescence before mixed glue
The quality of powder accounts for silica gel and the 30% of fluorescent material gross mass, and other condition is identical with the experiment condition of experimental group 1.
Matched group 7: weigh silica gel 5.0g (including 4.37g silicone rubber and 0.63gB type silica gel), fluorescent material 2.1g before mixed glue,
The quality of fluorescent material accounts for silica gel and the 30% of fluorescent material gross mass, and other condition is identical with the experiment condition of experimental group 1.
Matched group 8: weigh silica gel 5.0g (including 5.0g silicone rubber and 0gB type silica gel), fluorescent material 2.1g, fluorescence before mixed glue
The quality of powder accounts for silica gel and the 30% of fluorescent material gross mass, and other condition is identical with the experiment condition of experimental group 1.
In order to the fluorescent glue obtained prepared by above-mentioned experimental group 1-5 and matched group 1-8 is carried out performance test, the present invention carries
Method of testing for following:
Concrete detection method 1, the relatively detection of the LED product color gamut value difference that different phosphor combination cause
Experimental technique: take the LED product that above-mentioned experimental group 1～3 and matched group 1～3 obtain and carry out the test of colour gamut, will
LED product furnishing successively redness, green and blue picture, and when LED product is monochromatic, test the colour gamut coordinate of its correspondence
(R/G/B) color gamut value of corresponding LED product, it is calculated by its colour gamut coordinate.
Experimental result: as shown in table 1.
Color gamut value corresponding under the different phosphor combination of table 1
Interpretation of result: the color gamut value product more than 80% can be obtained according to the LED product obtained by experimental group 1～3, comparison
The color gamut value of group 1～3 correspondences is significant lower.
From above-mentioned table 1, in experimental group 1, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate gold-tinted
Fluorescent material accounts for the 60%, 20% and 20% of fluorescent material total amount respectively, and the color gamut value of its obtained LED colour gamut product is higher, energy
Enough realize high colour gamut.
In experimental group 2, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder account for glimmering respectively
Light powder total amount 50%, 25% and 25% time, the color gamut value of obtained LED colour gamut product is preferable.
In experimental group 3, fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder account for glimmering respectively
Light powder total amount 70%, 15% and 15% time, the color gamut value of obtained LED colour gamut product is preferable.
In matched group 1～3, when fluogermanic acid potassium red light fluorescent powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder are super
Cross provided by the present invention or limit scope time, the color gamut value of its correspondence is relatively low.
Further, in order to phosphor combination provided by the present invention and white light LEDs product are detected, with this
The white light LEDs product that bright experimental group 1 is obtained carries out spectral detection, as it is shown in figure 1, the light of common normal white light encapsulating products
Absworption peak shown by spectrogram is wider, and only two absworption peaks, lays respectively at 445nm and at 550nm, corresponding colour gamut
Value is 72%.As in figure 2 it is shown, high colour gamut phosphor combination of the present invention and the light corresponding to experimental group 1 of white light LEDs preparation method
In spectrogram, fluorescent material, under the exciting of blue chip, is emitted in the blue light of 445nm, at the green glow of 542nm, and red at 628nm
Light, it is seen then that narrowing further of spectrogram, brings the lifting that excitation is breakthrough, it is achieved that the colour gamut of more than 90%.Use
Other experimental grouies provided by the present invention or the prepared white light LEDs product obtained of embodiment obtain and above-mentioned experimental group 1 equally
Same or like spectrogram testing result.
Concrete detection method 2, detection is compared the different of component between the silica gel of addition and fluorescent material and is caused fluorescent glue performance
Difference
Experimental technique: take above-mentioned experimental group 1, experimental group 4 and experimental group 5 logical with the fluorescent glue that matched group 4～5 prepares
The LED lamp bead obtained after crossing common encapsulation carries out light efficiency and color rendering index test.
Experimental result: as shown in table 2.
The different rubber powder of table 2 is than the light efficiency of corresponding lamp bead and color rendering index table
Interpretation of result: Comprehensive Experiment group 1, experimental group 4～5 and matched group 9～10 are analyzed and understood, above-mentioned experimental group 1, experiment
The light efficiency of group 4～5 is apparently higher than the light efficiency of matched group 4～5, and between experimental group and matched group, color rendering index is without significant change.
Wherein, the difference of light efficiency performance in experimental group 1, experimental group 4～5 and matched group 4～5, its reason is as follows: along with fluorescent material content
Rising, the light efficiency of LED lamp bead presents and first raises the trend reduced afterwards, and during beginning, fluorescent material is gradually increased, and light-emitting phosphor accounts for
Total light efficiency ratio is also gradually increased；After the content of fluorescent material exceedes a certain marginal value, owing to fluorescent material is too much, equal volume
Fluorescent glue in, the content of fluorescent material is on the high side, hinders passing through of some blue light and gold-tinted, therefore, can directly contribute light efficiency
Decline.
Visible, fluorescent material percentage employed in experimental group 1 of the present invention, experimental group 4 and experimental group 5 be 30%～
When 50%, corresponding light efficiency is higher, and the fluorescent material amount selecting this scope is preferable.
Concrete detection method 3, silica gel causes the inspection of fluorescent glue performance difference at different silica gel content than mixing from fluorescent material
Survey
Experimental technique: by carrying out mixed glue at different silica gel content ratios, observe fluorescent glue and reach uniform situation.
Experimental result: as shown in table 3.
The different silica gel content information slip more uniform than the fluorescent glue of lower correspondence of table 3
Note: in table 3, the uniformity is that 85%～100% expression is good；The uniformity is that 70%～85% expression is general；Uniformly
Degree is poor less than 70% expression.
Interpretation of result: add more Type B silica gel and less silicone rubber in experimental group 1, it is possible to obtain the uniformity preferable
Fluorescent glue.And the composition of silica gel all uses Type B silica gel in matched group 6, its uniformity coefficient is general；Matched group 7 is selected relatively
Many silicone rubber and less Type B silica gel, its uniformity coefficient is poor；In matched group 8, the composition of silica gel all uses silicone rubber, its
Uniformity coefficient is poor.Owing to density and the silicone rubber density contrast of fluorescent material is away from relatively big, can be with glimmering in the mixed process of fluorescent glue
The sedimentation of light powder, therefore adds more silicone rubber and can cause mixing the problem that glue uniformity coefficient is the best.And Type B silica gel is because of its density
Less with phosphor's density gap, slow down fluorescent material sedimentation velocity, therefore add more Type B silica gel and make uniformity coefficient relatively
Good.And experimental group 1 can obtain uniformity more preferable than matched group 6, it is owing to the addition that silicone rubber is a small amount of is advantageous for mixing all
Even property, silicone rubber is weak due to its surface tension in whipping process, and surface can the little work that can play froth breaking, stabilized mixture
With.
Visible, experimental group 1 can obtain the ratio of the fluorescent glue of the preferable uniformity, the kind of the colloid of addition and various colloids
Difference, can impact its mixed glue effect.
Above-mentioned experimental result is equally applicable in other specific embodiment of the present invention, it is seen then that use the present invention to be carried
The fluorescent glue that the mixed adhesive process of confession prepares has the advantage that mixing is homogeneous and mixing efficiency is high, has described fluorescent glue
LED lamp bead has light efficiency and color developing preferably feature.
Compared with prior art, high colour gamut phosphor combination provided by the present invention, white light LEDs and preparation method thereof have
Advantages below:
A kind of high colour gamut phosphor combination of the present invention and the preparation method of white light LEDs have the advantage that
(1) a kind of high colour gamut phosphor combination includes that mass ratio is (1～4): (0.5～2): the HONGGUANG fluorescence of (0.5～2)
Powder, green light fluorescent powder and yellow fluorescent powder, described red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate.By inciting somebody to action
Above-mentioned phosphor combination and colloid carry out being mixed to get fluorescent glue, the LED product prepared by this phosphor combination, and its spectrum is inhaled
Receive peak to narrow further.The spectrogram that fluorescent material obtains after being stimulated, when its half-wave width is the narrowest, its whole spectrum then trends towards list
The spectrum of coloured light, now the excitation of this fluorescent material is the highest, and the white-light spectrum that thus fluorescent material is mixed into is then closer to ideal
White-light spectrum, the turgor of its color can reach more than 90%, and the bright-coloured degree of its picture and verisimilitude are preferable.
(2) green light fluorescent powder is halogen silicate, sulfide, silicate and nitrogen oxides, and described green light fluorescent powder is further
For Sialon, select the green light fluorescent powder of this series can obtain the white light LEDs product that colour gamut is higher.
(3) one or more during silicate yellow fluorescent powder is strontium silicate, magnesium silicate and strontium silicate baryta yellow emitting phosphor
Mixture, described silicate yellow fluorescent powder is strontium silicate yellow fluorescent powder further, and its luminous efficiency is higher.
(4) in the present invention, the proportioning of fluorescent material may further be (1～3): (0.5～1.5): (0.5～1.5), at this
LED light spectrum can be made under ratio to narrow further, so that excitation improves thus that acquisition LED product can be made to have is more excellent
Gamut range.
(5) mean diameter of fluorescent material is 10um～25um, and particle diameter is less, beneficially mixes homogeneous with colloid.Fluorescent material
The size of grain not only affects mixed adhesive process, and can affect color rendering properties and the luminescent properties of LED product, and granule is the most unfavorable
In mixing uniformly with colloid, in limited range of the present invention, acquisition LED product can be made to have more excellent gamut range.
(6) a kind of white light LEDs preparation method, including step: the fluorescent material that S1, offer need uniformly mixes with colloid
Obtaining fluorescent glue, described fluorescent material uses phosphor combination described above to obtain；S2, by described fluorescent glue inject be provided with chip
LED support in, described fluorescent glue cover chip, toast described fluorescent glue so that it is solidification obtain LED product.The method can obtain
Must mix the uniform fluorescent glue of glue, the LED product using described fluorescent glue to be obtained has preferably light efficiency and color developing effect.
(7) in the most described white light LEDs preparation method, the fluorescent material percentage used be 30%～
When 50%, light efficiency corresponding to prepared acquisition LED product is higher, and the fluorescent material amount selecting this scope is preferable.
(8) in the present invention, the diameter of abrading-ball is too big, then be unable to reach the function of ball milling mix homogeneously；And ball radius
The least, fluorescent material may be ground, make the particle diameter of fluorescent material diminish, the requirement such as brightness being unfavorable for LED product.Cause
This, a diameter of the 3 of abrading-ball～10mm can make fluorescent material sufficiently mix with colloid, and will not make fluorescent powder crushing, this diameter
Under abrading-ball mixed effect optimal.
(9) in white light LEDs preparation method provided by the present invention, the temperature in described mixed glue stage is set to 30～60
DEG C, because at such a temperature, colloid viscosity is relatively low, is beneficial to mix, thus the fluorescent glue being uniformly mixed, uniform fluorescent glue
Obtain the more preferable LED product of color developing effect.
(10) in white light LEDs provided by the present invention, its excitation more preferably, closer to preferable white light.
(11) in white light LEDs provided by the present invention, described chip is blue chip or black light chip, by indigo plant
The fluorescent material of light or three kinds of colors of ultraviolet excitation can get three kinds of narrower absworption peaks corresponding to color, and the most whole spectrum tends to
In monochromatic spectrum, thus the white-light spectrum of the prepared white light LEDs obtained is more preferable.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all former in the present invention
Any amendment made within then, within equivalent and improvement etc. all should comprise protection scope of the present invention.
Claims (10)
1. one kind high colour gamut phosphor combination, it is characterised in that: include that mass ratio is (1～4): (0.5～2): (0.5～2)
Red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder, described red light fluorescent powder is fluogermanic acid potassium, and yellow fluorescent powder is silicic acid
Salt.
A kind of high colour gamut phosphor combination the most as claimed in claim 1, it is characterised in that: described green light fluorescent powder is halogen silicic acid
The mixture of one or more in salt, sulfide, silicate and nitrogen oxides, described silicate be strontium silicate, magnesium silicate and
The mixture of one or more in strontium silicate barium.
A kind of high colour gamut phosphor combination the most as claimed in claim 2, it is characterised in that: described green light fluorescent powder can be further
For Sialon green light fluorescent powder, described yellow fluorescent powder may further be strontium silicate, described red light fluorescent powder, green light fluorescent powder and Huang
The mean diameter of emitting phosphor is 5um～30um.
4. the one high colour gamut phosphor combination as according to any one of claim 1-3, it is characterised in that: described fluorescent material group
Closing mass ratio is (1～3) further: (0.5～1.5): (0.5～1.5).
5. a white light LEDs preparation method, it is characterised in that: include weighing mass ratio for (1～4): (0.5～2): (0.5～2)
Red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder and colloid be uniformly mixed to get fluorescent glue, wherein, described HONGGUANG fluorescence
Powder is fluogermanic acid potassium, and yellow fluorescent powder is silicate, and uses described fluorescent glue to prepare required white light LEDs further.
6. a kind of white light LEDs preparation method as claimed in claim 5, it is characterised in that: described colloid is silica gel, described fluorescence
The quality of powder accounts for the 30%～50% of fluorescent material and silica gel gross mass.
7. a kind of white light LEDs preparation method as claimed in claim 5, it is characterised in that be mixed into ball milling mixing described in:, mixed
At least one abrading-ball, a diameter of the 3 of described abrading-ball～10mm is added during conjunction.
8. a kind of white light LEDs preparation method as claimed in claim 7, it is characterised in that: described ball milling mixing temperature is 30 DEG C
～60 DEG C.
9. a white light LEDs, it is characterised in that: include that fluorescent glue, described fluorescent glue are for (1～4) by mass ratio: (0.5～
2): red light fluorescent powder, green light fluorescent powder and the yellow fluorescent powder of (0.5～2), wherein, described red light fluorescent powder is fluogermanic acid potassium,
Yellow fluorescent powder is silicate.
10. a kind of white light LEDs as claimed in claim 9, it is characterised in that: described white light LEDs is by blue light or ultraviolet excitation
Gained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414233.5A CN106098907A (en) | 2016-06-13 | 2016-06-13 | High colour gamut phosphor combination, white light LEDs and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414233.5A CN106098907A (en) | 2016-06-13 | 2016-06-13 | High colour gamut phosphor combination, white light LEDs and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106098907A true CN106098907A (en) | 2016-11-09 |
Family
ID=57845490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610414233.5A Withdrawn CN106098907A (en) | 2016-06-13 | 2016-06-13 | High colour gamut phosphor combination, white light LEDs and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106098907A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065297A (en) * | 2016-12-08 | 2017-08-18 | 郭少平 | A kind of high colour gamut display backlight process |
| CN107384372A (en) * | 2017-08-14 | 2017-11-24 | 苏州轻光材料科技有限公司 | A kind of LED fluorescent powder composition |
| CN107446573A (en) * | 2017-08-18 | 2017-12-08 | 苏州轻光材料科技有限公司 | A kind of UV excited white lights LED fluorescent material and preparation method thereof |
| CN107474832A (en) * | 2017-08-16 | 2017-12-15 | 苏州轻光材料科技有限公司 | A kind of preparation method of gold-tinted quantum dot |
| CN107557003A (en) * | 2017-09-28 | 2018-01-09 | 苏州轻光材料科技有限公司 | A kind of blue-fluorescence graphene quantum dot preparation method and in white light LEDs application |
| CN107674674A (en) * | 2017-09-28 | 2018-02-09 | 苏州轻光材料科技有限公司 | The preparation method of a kind of gold-tinted quantum dot and in white light LEDs application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097999A (en) * | 2014-05-06 | 2015-11-25 | 四川新力光源股份有限公司 | LED light-emitting device and manufacturing method thereof |
| CN105659396A (en) * | 2013-10-18 | 2016-06-08 | 夏普株式会社 | Light-emitting device |
-
2016
- 2016-06-13 CN CN201610414233.5A patent/CN106098907A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105659396A (en) * | 2013-10-18 | 2016-06-08 | 夏普株式会社 | Light-emitting device |
| CN105097999A (en) * | 2014-05-06 | 2015-11-25 | 四川新力光源股份有限公司 | LED light-emitting device and manufacturing method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065297A (en) * | 2016-12-08 | 2017-08-18 | 郭少平 | A kind of high colour gamut display backlight process |
| CN107384372A (en) * | 2017-08-14 | 2017-11-24 | 苏州轻光材料科技有限公司 | A kind of LED fluorescent powder composition |
| CN107474832A (en) * | 2017-08-16 | 2017-12-15 | 苏州轻光材料科技有限公司 | A kind of preparation method of gold-tinted quantum dot |
| CN107474832B (en) * | 2017-08-16 | 2020-07-21 | 苏州轻光材料科技有限公司 | Preparation method of yellow light quantum dots |
| CN107446573A (en) * | 2017-08-18 | 2017-12-08 | 苏州轻光材料科技有限公司 | A kind of UV excited white lights LED fluorescent material and preparation method thereof |
| CN107557003A (en) * | 2017-09-28 | 2018-01-09 | 苏州轻光材料科技有限公司 | A kind of blue-fluorescence graphene quantum dot preparation method and in white light LEDs application |
| CN107674674A (en) * | 2017-09-28 | 2018-02-09 | 苏州轻光材料科技有限公司 | The preparation method of a kind of gold-tinted quantum dot and in white light LEDs application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106098907A (en) | High colour gamut phosphor combination, white light LEDs and preparation method thereof | |
| CN104241507B (en) | Wide colour gamut LED and its backlight assembly | |
| CN103608938B (en) | Semiconductor light-emitting apparatus, display material irradiate to irradiate to be irradiated with illuminator, vegetable with illuminator, meat and are irradiated with illuminator, typically used illuminator and semiconductor light emitting system with illuminator, fresh fish | |
| CN105304793B (en) | A kind of isolated liquid-packing LED and preparation method thereof | |
| CN107678207A (en) | A kind of backlight with OFED structures and its application in full-color display | |
| CN107546301B (en) | white glue, LED lamp bead and packaging method thereof | |
| CN105428497B (en) | LED light-emitting structure applied to backlight source | |
| CN109301050A (en) | LED white light parts and preparation method thereof, LED backlight mould group | |
| CN112608750A (en) | Full-spectrum LED fluorescent powder composition and full-spectrum white LED device | |
| CN115948162A (en) | High-color-rendering fluorescent powder composition and LED packaging device | |
| AU2015284080B2 (en) | Oxyfluoride phosphor compositions and lighting apparatus thereof | |
| CN106085424A (en) | High colour gamut phosphor combination, white light LEDs and preparation method thereof | |
| WO2020034391A1 (en) | Led white light device and preparation method therefor, and led backlight module | |
| CN105938868A (en) | High-color gamut fluorescent powder composition, white LED and preparation method of white LED | |
| CN208460799U (en) | A kind of novel light-emitting device | |
| CN107654864A (en) | A kind of light source body with OFED structures and its application in illumination | |
| CN103242835B (en) | Fluorophore and light emitting device | |
| CN103242844B (en) | Fluorophore and light emitting device | |
| CN202259428U (en) | White light LED packaging structure | |
| CN106058014A (en) | High-colour-gamut fluorescent powder combination, white-light LED and preparation method of white-light LED | |
| CN1950481A (en) | Wave length shifting compositions for white emitting diode systems | |
| CN111146324A (en) | White light LED device with ultrahigh color rendering index | |
| CN208460785U (en) | A kind of luminescent device | |
| CN106229402A (en) | A kind of high colour gamut white light LEDs preparation method using green light fluorescent powder collocation red light fluorescent powder | |
| CN102097571A (en) | Yellow/green light diode, backlight, mobile phone and illumination indicating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161109 |
|
| WW01 | Invention patent application withdrawn after publication |