CN105938868A - High-color gamut fluorescent powder composition, white LED and preparation method of white LED - Google Patents
High-color gamut fluorescent powder composition, white LED and preparation method of white LED Download PDFInfo
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- CN105938868A CN105938868A CN201610420119.3A CN201610420119A CN105938868A CN 105938868 A CN105938868 A CN 105938868A CN 201610420119 A CN201610420119 A CN 201610420119A CN 105938868 A CN105938868 A CN 105938868A
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- 239000000843 powder Substances 0.000 title claims abstract description 175
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 title claims abstract description 19
- 239000003292 glue Substances 0.000 claims abstract description 63
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [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
- 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
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 92
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 61
- 239000000741 silica gel Substances 0.000 claims description 61
- 229910002027 silica gel Inorganic materials 0.000 claims description 61
- 229910052917 strontium silicate Inorganic materials 0.000 claims description 26
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical group [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 claims description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 24
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 11
- 230000005284 excitation Effects 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 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
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical group [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 claims description 3
- -1 halogen silicate Chemical class 0.000 claims 2
- UJCTVZQEMVMROF-UHFFFAOYSA-N [Sr].[Si](O)(O)(O)O Chemical compound [Sr].[Si](O)(O)(O)O UJCTVZQEMVMROF-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005303 weighing Methods 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 description 23
- 239000004945 silicone rubber Substances 0.000 description 23
- 238000002474 experimental method Methods 0.000 description 16
- 238000001228 spectrum Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 8
- 238000009877 rendering Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 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
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant 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
- 230000006872 improvement Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 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
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 125000005624 silicic acid group Chemical group 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
-
- 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
- H01L33/005—Processes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention relates to the technical field of white LED backlight, in particular to a high-color gamut fluorescent powder composition. The fluorescent powder composition comprises red-light fluorescent powder, green-light fluorescent powder and yellow-light fluorescent powder at the mass ratio of (1-4) to (0.5-2) to (0.5-2), wherein the red-light fluorescent powder is potassium fluosilicate; and the yellow-light fluorescent powder is silicate. The invention further provides a white LED. The white LED comprises fluorescent glue which is prepared from the fluorescent powder composition. The invention further provides a preparation method of the white LED. The method comprises the steps of: weighing the red-light fluorescent powder, the green-light fluorescent powder and the yellow-light fluorescent powder at the mass ratio of (1-4) to (0.5-2) to (0.5-2); mixing the fluorescent powder with colloid to obtain the fluorescent glue; and further preparing the required white LED by the fluorescent glue. By the high-color gamut fluorescent powder composition and the preparation method of the white LED, the high-color gamut white LED can be obtained; and the high-color gamut white LED has the advantages of being relatively high in color saturation level and more realistic.
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 preparation method thereof.
[background technology]
Existing market is increasing to the demand of white light LEDs.Generally white light LEDs
Main implementation has following several: 1, by Red Green Blue LED
Chip hybrid realizes white light, by the chip package by these three kinds of colors, mainly
Advantage is that color rendering properties is good, but relatively costly, and three kinds of color LED chip
Light decay different, thus easily produce the defects such as metachromatism；2, in order to make
LED product color is more perfect, and color intensity is more rich, closer to true generation
The color on boundary, numerous research and development technology personnel are devoted to find raising LED product
Color gamut value, by utilizing ultraviolet light or near ultraviolet excitated three primary color phosphor, from
And send white light, this method is decided by the performance of three primary color phosphor, although
There is high colour gamut and preparation technology simple, but to there is luminous efficiency low for it,
The shortcomings such as temperature stability is poor, ultraviolet light easily leakage.3, by by blue light
LED chip excites yellow fluorescent powder to send gold-tinted, and gold-tinted sends with chip again
Residue blue light is combined into white light.This scheme efficiency is the highest, but owing to lacking
HONGGUANG component, spectrum is the widest, the turgor of its color about at 60%-70%,
The bright-coloured degree of its picture and verisimilitude are poor, thus can not meet all colour temperatures
Technological requirement, therefore its application scenario has certain limitation.
Therefore, on the whole, it is achieved the method for high colour gamut white light LEDs is also deposited
In the biggest problem, people need continue innovation research and development on this basis, overcome this
A little technical barriers.
[summary of the invention]
For overcoming the technical barrier that existing LED product colour gamut area coverage is less,
The high colour gamut that the invention provides a kind of LED product colour gamut area coverage big is glimmering
The combination of light powder, 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 glimmering
Light powder combines, and it includes 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 HONGGUANG fluorescence
Powder is potassium fluosilicate, and yellow fluorescent powder is silicate.
Preferably, described green light fluorescent powder is halogen silicate, sulfide, silicic acid
The mixture of one or more in salt and nitrogen oxides, described silicate is silicon
The mixture of one or more in acid strontium, magnesium silicate and strontium silicate barium.
Preferably, described green light fluorescent powder may further be Sialon green-emitting fluorescent
Powder, described yellow fluorescent powder may further be strontium silicate, described red light fluorescent powder,
The mean diameter of green light fluorescent powder and yellow fluorescent powder is 5um～30um.
Preferably, described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder
Mass ratio 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
LED preparation method, it comprises the following steps: weigh mass ratio for (1～4):
(0.5～2): red light fluorescent powder, green light fluorescent powder and the gold-tinted of (0.5～2) are glimmering
Light powder, wherein, described red light fluorescent powder is potassium fluosilicate, and yellow fluorescent powder is
Silicate, is mixed to get fluorescent glue by above-mentioned fluorescent material and colloid, uses described
Fluorescent glue prepares required white light LEDs.
Preferably, described colloid is silica gel, and the quality of described fluorescent material accounts for fluorescence
Powder and the 30%～50% of silica gel gross mass.
Preferably, described in be mixed into ball milling mixing, mixing time add at least one
Abrading-ball, a diameter of the 3 of described abrading-ball～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
LED, it includes that fluorescent glue, described fluorescent glue include 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 potassium fluosilicate, and yellow fluorescent powder is silicate.
Preferably, described white light LEDs is sent white by blue light or ultraviolet excitation
Light.
Compared with prior art, one provided by the present invention high colour gamut fluorescent material
Combination, wherein, red light fluorescent powder, yellow fluorescent powder and green light fluorescent powder quality
Than for (1～4): (0.5～2): (0.5～2), described red light fluorescent powder is fluorine silicon
Acid potassium, yellow fluorescent powder is silicate and by described phosphor combination and colloid
Carry out being mixed to get fluorescent glue, and use described fluorescent glue to prepare further
Required white light LEDs, by using above-mentioned technique to be packaged into white light LEDs, its
The spectral absorption peak of white light LEDs can narrow further.Due to when fluorescent material
When half-wave width is the narrowest, its whole spectrum then trends towards monochromatic spectrum, now
The excitation that fluorescent material is corresponding is the highest, the white light light that thus fluorescent material is mixed into
Spectrum is then closer to preferable white-light spectrum, and the turgor of its color can reach
More than 90%, 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 more clear bright
In vain, below in conjunction with accompanying drawing and embodiment, the present invention is carried out the most in detail
Explanation.Should be appreciated that specific embodiment described herein is only in order to explain
The present invention, is not intended to limit the present invention.
First embodiment of the invention provides a kind of high colour gamut phosphor combination, its bag
Include mass ratio for (1～4): (0.5～2): the red light fluorescent powder of (0.5～2),
Green light fluorescent powder and yellow fluorescent powder, wherein, described red light fluorescent powder is fluorine silicon
Acid potassium, yellow fluorescent powder is silicate.
Further, red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder
Mass ratio be (1～3): (0.5～1.5): (0.5～1.5).In the present invention one
In a little preferred embodiments, can be described red light fluorescent powder, green light fluorescent powder and
The quality of yellow fluorescent powder accounts for the 62.7% of fluorescent material gross mass respectively, and 17.2%,
20.1%.Can be again that described red light fluorescent powder, green light fluorescent powder and gold-tinted are glimmering
The quality of light powder accounts for the 55% of fluorescent material gross mass respectively, and 20%, 25%.Also
It can be the quality of described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder
Account for the 59% of fluorescent material gross mass, 17%, 24% respectively.Can also be described
The quality of red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder accounts for fluorescence respectively
The 66% of powder gross mass, 14%, 20%.
Preferably, described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder account for glimmering respectively
The 60%, 18% and 22% of light powder total amount.
In the present invention, described green light fluorescent powder can be halogen silicate, sulfide,
The combination of one or more in silicate and nitrogen oxides.The present invention some
In specific embodiment, described green light fluorescent powder concretely Sialon.
Preferably, during described silicate is strontium silicate, magnesium silicate and strontium silicate barium
The mixture of one or more, in particular embodiments of the invention, institute
State yellow fluorescent powder and may further be strontium silicate.
Preferably, described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder
Mean diameter be 5um～30um.In some preferably embodiment, red
The mean diameter of emitting phosphor, green light fluorescent powder and yellow fluorescent powder can be further
It is 16um～25um.
The preparation method of the white light LEDs that the second embodiment of the present invention provides is:
Weigh mass ratio for (1～4): (0.5～2): the HONGGUANG of (0.5～2) is glimmering
Light powder, green light fluorescent powder and yellow fluorescent powder, wherein, described red light fluorescent powder
For potassium fluosilicate, yellow fluorescent powder is silicate, by above-mentioned fluorescent material and colloid
It is mixed to get fluorescent glue, uses described fluorescent glue to prepare required white light
LED。
In the present invention, described fluorescent material and colloid are carried out mixed glue, the most glimmering
The quality of light powder accounts for the 30%～50% of fluorescent material and colloid total amount.
Described colloid can be including but not limited to: organic silica gel and inorganic silica gel,
Wherein, organic silica gel includes: one in silicone rubber, silicones and silicone oil or
Several mixture, inorganic silica gel includes Type B silica gel, silochrom and thin
The mixture of one or more in the silica gel of hole.Described organic silica gel and described nothing
The mixing quality of machine silica gel is than being (1～4): (2～7).Further, institute
State the organic silica gel mixing quality with described inorganic silica gel than being (1～2):
(5～7).In some specific embodiments of the present invention, described colloid specifically may be used
Mix, with mass ratio, the colloid obtained with Type B silica gel for 1:7, also for silicone rubber
Can be that silicone rubber, Kiselgel A mix for 1:1:5 with mass ratio with Type B silica gel
The colloid obtained.
In some embodiments of the invention, in order to make fluorescent glue mixing more equal
Even, at least one abrading-ball, the material selection oxygen of abrading-ball can be added during mixed glue
Change zirconium.It is good that zirconium oxide has high tenacity, anti-wear performance.Ball radius is preferably
3～10mm, because ball radius is the biggest, it is impossible to reach mixed glue uniform, mill
Bulb diameter is the least, may can cause the pulverizing of fluorescent material, nothing during mixed glue
Method reaches the requirements such as the brightness of later stage packaging part.Similarly, the quantity of abrading-ball is also
Be there is impact in mixed adhesive process.When ball radius is less, abrading-ball quantity can be relative
More；When ball radius is bigger, abrading-ball quantity can be relatively fewer.As at this
In brighter preferably embodiment, the quantity of the abrading-ball of a diameter of 3～5mm with
The ratio of number of the abrading-ball of a diameter of 5～10mm is (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 and be provided with chip
It is packaged in LED support, specifically, by the bottom of described LED support
Glue on portion's point, then on described LED support point, the position of glue is fixed
One LED chip.Further, by the positive pole of described LED chip with described
The positive pole correspondence welding of LED support, 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 covers described LED chip.LED after envelope is filled fluorescent glue props up
Toast in being placed on baking box, make fluorescent glue solidify, obtain LED product.
Preferably, in the preparation method of the white light LEDs of the present invention, LED core
Sheet is blue chip or black light chip.In some preferably embodiment,
LED chip is blue chip.
The third embodiment of the present invention provides a white light LEDs product, described in vain
Light LED product it include that fluorescent glue, described fluorescent glue include that mass ratio is
(1～4): (0.5～2): the red light fluorescent powder of (0.5～2), green light fluorescent powder
And yellow fluorescent powder, wherein, described red light fluorescent powder is potassium fluosilicate, gold-tinted
Fluorescent material is silicate.
Preferably, described white light LEDs is by by blue light or ultraviolet excitation fluorescence
Powder sends white light, and the white color purity of described white light LEDs is higher, and it is white
Light spectrum is close to ideal white light, and its color gamut value can reach more than 90%.
In order to further to the preparation method of white light LEDs provided by the present invention
Explanation, the present invention provides the most concrete experimental group.
Experimental group 1: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 1.26g, plug
Grand green light fluorescent powder 0.42g, strontium silicate yellow fluorescent powder 0.42g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 60%, 20% and 20% of fluorescent material gross mass.Fluorescent material is carried out with silica gel
Ball milling mixes.Use the zirconium oxide balls of a diameter of 3～10mm.By fluorescent glue
Injecting 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 and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 1.05g, plug
Grand green light fluorescent powder 0.53g, strontium silicate yellow fluorescent powder 0.52g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 50%, 25% and 25% of fluorescent material gross mass.Other condition and experimental group 1
Experiment condition identical.
Experimental group 3: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 1.47g, plug
Grand green light fluorescent powder 0.32g, strontium silicate yellow fluorescent powder 0.31g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 70%, 15% and 15% of fluorescent material gross mass.Other condition and experimental group 1
Experiment condition identical.
Experimental group 4: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 3.3g, the quality of fluorescent material accounts for silica gel and fluorescent material is total
The 40% of quality, other condition is identical with the experiment condition of experimental group 1.
Experimental group 5: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 5.0g, the quality of fluorescent material accounts for silica gel and fluorescent material is total
The 50% of quality, other condition is identical with the experiment condition of experimental group 1.
Matched group 1: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 0.21g, plug
Grand green light fluorescent powder 0.95g, strontium silicate yellow fluorescent powder 0.94g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 10% of fluorescent material gross mass, 45% and 45%.Other condition and experimental group 1
Experiment condition identical.
Matched group 2: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 0.42g, plug
Grand green light fluorescent powder 0.84g, strontium silicate yellow fluorescent powder 0.84g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 20% of fluorescent material gross mass, 40% and 40%.Other condition and experimental group 1
Experiment condition identical.
Matched group 3: weigh silica gel 5.0g and (include 0.63g silicone rubber and 4.37gB
Type silica gel), fluorescent material 2.1g (potassium fluosilicate red light fluorescent powder 1.89g, plug
Grand green light fluorescent powder 0.11g, strontium silicate yellow fluorescent powder 0.10g).Fluorescent material
Quality account for fluorescent material and colloid gross mass 30%, potassium fluosilicate HONGGUANG is glimmering
The quality of light powder, Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder accounts for respectively
The 90% of fluorescent material gross mass, 5% and 5%.Other condition and experimental group 1
Experiment condition is identical.
Matched group 4: weigh silica gel 5.0g before mixed glue and (include 0.63g silicone rubber
And 4.37gB type silica gel), fluorescent material 1.7g, the quality of fluorescent material accounts for total amount
25%, other condition is identical with the experiment condition of experimental group 1.
Matched group 5: weigh silica gel 5.0g before mixed glue and (include 0.63g silicone rubber
And 4.37gB type silica gel), fluorescent material 6.1g, the quality of fluorescent material accounts for total amount
55%, other condition is identical with the experiment condition of experimental group 1.
Matched group 6: weigh before mixed glue silica gel 5.0g (include 0g silicone rubber and
5.0gB type silica gel), fluorescent material 2.1g, the quality of fluorescent material accounts for silica gel and glimmering
The 30% of light powder gross mass, the experiment condition phase of other condition and experimental group 1
With.
Matched group 7: weigh silica gel 5.0g before mixed glue and (include 4.37g silicone rubber
And 0.63gB type silica gel), fluorescent material 2.1g, the quality of fluorescent material account for silica gel and
The 30% of fluorescent material gross mass, the experiment condition phase of other condition and experimental group 1
With.
Matched group 8: weigh silica gel 5.0g before mixed glue and (include 5.0g silicone rubber
And 0gB type silica gel), fluorescent material 2.1g, the quality of fluorescent material accounts for silica gel and glimmering
The 30% of light powder gross mass, the experiment condition phase of other condition and experimental group 1
With.
In order to glimmering to obtain prepared by above-mentioned experimental group 1-5 and matched group 1-8
Optical cement carries out performance test, and the present invention provides following method of testing:
Concrete detection method 1, the LED that relatively different phosphor combination cause
The detection of product color gamut value difference
Experimental technique: take what above-mentioned experimental group 1～3 and matched group 1～3 obtained
LED product carries out the test of colour gamut, LED product successively furnishing is red,
Green and blue picture, and when LED product is monochromatic, test it corresponding
Colour gamut coordinate (R/G/B), be calculated corresponding LED by its colour gamut coordinate
The color gamut value of product.
Experimental result: as shown in table 1.
Color gamut value corresponding under the different phosphor combination of table 1
Interpretation of result: can obtain according to the LED product obtained by experimental group 1～3
Obtaining the color gamut value product more than 80%, the color gamut value of matched group 1～3 correspondence is obvious
Relatively low.
From above-mentioned table 1, in experimental group 1, potassium fluosilicate red light fluorescent powder,
Sialon green light fluorescent powder and strontium silicate yellow fluorescent powder account for fluorescent material total amount respectively
60%, 20% and 20%, the color gamut value of its obtained LED colour gamut product
Higher, it is possible to realize high colour gamut.
In experimental group 2, potassium fluosilicate red light fluorescent powder, Sialon green light fluorescent powder
And strontium silicate yellow fluorescent powder account for respectively fluorescent material total amount 50%, 25% and
When 25%, the color gamut value of obtained LED colour gamut product is preferable.
In experimental group 3, potassium fluosilicate red light fluorescent powder, Sialon green light fluorescent powder
And strontium silicate yellow fluorescent powder account for respectively fluorescent material total amount 70%, 15% and
When 15%, the color gamut value of obtained LED colour gamut product is preferable.
In matched group 1～3, when potassium fluosilicate red light fluorescent powder, Sialon green glow are glimmering
Light powder and strontium silicate yellow fluorescent powder exceed provided by the present invention or restriction
During scope, the color gamut value of its correspondence is relatively low.
Further, in order to phosphor combination provided by the present invention and white
Light LED product detects, with the experimental group 1 of the present invention obtained white
Light LED product carries out spectral detection, as it is shown in figure 1, common normal white light
Absworption peak shown by the spectrogram of encapsulating products is wider, and only two suctions
Receiving peak, lay respectively at 445nm and at 550nm, corresponding color gamut value is
72%.As in figure 2 it is shown, high colour gamut phosphor combination of the present invention and white light LEDs
In the spectrogram corresponding to experimental group 1 of preparation method, fluorescent material is at blue light core
Under the exciting of sheet, it is emitted in the blue light of 445nm, at the green glow of 545nm,
HONGGUANG at 632nm, 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 this
Bright other provided experimental grouies or the prepared white light LEDs obtained of embodiment
Product obtains and above-mentioned experimental group 1 same or like spectrogram detection knot equally
Really.
Concrete detection method 2, detection is compared between the silica gel of addition and fluorescent material
The difference of component causes fluorescent glue performance difference
Experimental technique: take above-mentioned experimental group 1, experimental group 4 and experimental group 5 with
The fluorescent glue that matched group 4～5 prepares obtains after passing through common encapsulation
LED lamp bead 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
Analyze understand, above-mentioned experimental group 1, experimental group 4～5 light efficiency apparently higher than right
According to the light efficiency of group 4～5, and between experimental group and matched group, color rendering index is without substantially
Change.Wherein, light efficiency in experimental group 1, experimental group 4～5 and matched group 4～5
The difference of performance, its reason is as follows: along with the rising of fluorescent material content, LED
The light efficiency of lamp bead presents and first raises the trend reduced afterwards, and during beginning, fluorescent material is gradually
Increasing, light-emitting phosphor accounts for total light efficiency ratio and is also gradually increased；Work as fluorescent material
Content exceed a certain marginal value after, owing to fluorescent material is too much, equal volume
In fluorescent glue, the content of fluorescent material is on the high side, hinders some blue light and gold-tinted
Pass through, therefore, the decline of light efficiency can be directly contributed.
Visible, experimental group 1 of the present invention, experimental group 4 and experimental group 5 are adopted
Fluorescent material percentage when being 30%～50%, corresponding light efficiency is higher,
The fluorescent material amount selecting this scope is preferable.
Concrete detection method 3, silica gel is mixed at different silica gel content ratio from fluorescent material
Close the detection causing fluorescent glue performance difference
Experimental technique: by carrying out mixed glue at different silica gel content ratios, observe glimmering
Optical cement reaches 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
It is that 70%～85% expression is general；The uniformity is poor less than 70% expression.
Interpretation of result: add more Type B silica gel and less in experimental group 1
Silicone rubber, it is possible to obtain the preferable fluorescent glue of the uniformity.And matched group 6
The composition of middle silica gel all uses Type B silica gel, and its uniformity coefficient is general；Right
Selecting more silicone rubber and less Type B silica gel according in group 7, it is uniform
Degree is poor；In matched group 8, the composition of silica gel all uses silicone rubber, and it is equal
Even degree is poor.Owing to density and the silicone rubber density contrast of fluorescent material is away from relatively big,
Therefore the mixed process of fluorescent glue can add more with the sedimentation of fluorescent material
Silicone rubber can cause the best problem of mixed glue uniformity coefficient.And Type B silica gel
Because its density is less with phosphor's density gap, slow down fluorescent material sedimentation speed
Degree, therefore adds more Type B silica gel and makes uniformity coefficient preferable.And test
Group 1 can obtain uniformity more preferable than matched group 6, is owing to silicone rubber is a small amount of
Addition be advantageous for mixing uniformity, silicone rubber in whipping process due to
Its surface tension is weak, and surface can the little effect that can play froth breaking, stabilized mixture.
Visible, experimental group 1 can obtain the fluorescent glue of the preferable uniformity, addition
The kind of colloid is different from the ratio of various colloids, can cause its mixed glue effect
Impact.
Above-mentioned experimental result is equally applicable to other be embodied as of the present invention
In example, it is seen then that use that mixed adhesive process provided by the present invention prepares is glimmering
Optical cement has the advantage that mixing is homogeneous and mixing efficiency is high, has described fluorescent glue
LED lamp bead there is light efficiency and color developing preferably feature.
Compared with prior art, high colour gamut fluorescent material group provided by the present invention
Conjunction, white light LEDs and preparation method thereof have the advantage that
A kind of high colour gamut phosphor combination of the present invention and the preparation of white light LEDs
Method has the advantage that
(1) a kind of high colour gamut phosphor combination includes that mass ratio is (1～4):
(0.5～2): red light fluorescent powder, green light fluorescent powder and the gold-tinted of (0.5～2)
Fluorescent material, described red light fluorescent powder is potassium fluosilicate, and yellow fluorescent powder is silicic acid
Salt.By carrying out being mixed to get fluorescent glue by above-mentioned phosphor combination and colloid,
The LED product prepared by this phosphor combination, its spectral absorption peak enters one
Step narrows.The spectrogram that fluorescent material obtains after being stimulated, when its half-wave width is the narrowest,
Its whole spectrum then trends towards monochromatic spectrum, the now colour purity of this fluorescent material
Spending the highest, the white-light spectrum that thus fluorescent material is mixed into is then closer to preferably
White-light spectrum, the turgor of its color can reach more than 90%, its picture
Bright-coloured degree and verisimilitude are preferable.
(2) green light fluorescent powder is halogen silicate, sulfide, silicate and nitrogen
Oxide, described green light fluorescent powder is Sialon further, selects the green of this series
Emitting phosphor can obtain the white light LEDs product that colour gamut is higher.
(3) silicate yellow fluorescent powder is strontium silicate, magnesium silicate and strontium silicate
The mixture of one or more in baryta yellow emitting phosphor, described silicate gold-tinted
Fluorescent material 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), can make under this ratio LED light compose into
One step narrows, so that excitation improves thus can make acquisition LED product
There is more excellent gamut range.
(5) mean diameter of fluorescent material is 10um～25um, and particle diameter is less,
Beneficially mix homogeneous with colloid.The size of fluorescent powder grain not only affects mixed glue
Technique, and color rendering properties and the luminescent properties of LED product can be affected,
Grain is unfavorable for more greatly mixing uniformly with colloid, in limited range of the present invention
In, acquisition LED product can be made to have more excellent gamut range.
(6) a kind of white light LEDs preparation method, including step: S1, offer
The fluorescent material needed and colloid are uniformly mixed to get fluorescent glue, described fluorescence
Powder uses phosphor combination described above to obtain；S2, described fluorescent glue is noted
Entering to be provided with in the LED support of chip, described fluorescent glue covers chip, baking
Described fluorescent glue so that it is solidification obtains LED product.The method can obtain mixed glue
Uniform fluorescent glue, the LED product using described fluorescent glue to be obtained has relatively
Excellent light efficiency and color developing effect.
(7), in the most described white light LEDs preparation method, used
Fluorescent material percentage when being 30%～50%, prepared acquisition LED produces
The light efficiency that product are corresponding 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 ball
The function of mill mix homogeneously；And ball radius is the least, fluorescent material may be entered
Row grinds, and makes the particle diameter of fluorescent material diminish, is unfavorable for the brightness of LED product
Deng requirement.Therefore, a diameter of the 3～10mm of abrading-ball can make fluorescent material and colloid
Sufficiently mixing, and fluorescent powder crushing will not be made, the abrading-ball under this diameter mixes
Close best results.
(9) in white light LEDs preparation method provided by the present invention, described
The temperature in mixed glue stage is set to 30～60 DEG C, because at such a temperature, and colloid
Viscosity is relatively low, is beneficial to mix, thus the fluorescent glue being uniformly mixed, uniformly
Fluorescent glue obtain the more preferable LED product of color developing effect.
(10) in white light LEDs provided by the present invention, its excitation is more
Good, 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 blue light or three kinds of face of ultraviolet excitation
The fluorescent material of color can get three kinds of narrower absworption peaks corresponding to color, the most whole
Spectrum trends towards monochromatic spectrum, and thus the prepared white light LEDs obtained is white
Light spectrum is more preferable.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit
The present invention processed, all any amendments made within the principle of the present invention, equivalent
Within replace 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: bag
Include mass ratio for (1～4): (0.5～2): the HONGGUANG of (0.5～2) is glimmering
Light powder, green light fluorescent powder and yellow fluorescent powder, described HONGGUANG fluorescence
Powder is potassium fluosilicate, and yellow fluorescent powder is silicate.
A kind of high colour gamut fluorescent material group the most as claimed in claim 1
Close, it is characterised in that: described green light fluorescent powder be halogen silicate,
Mixing of one or more in sulfide, silicate and nitrogen oxides
Compound, described silicate is strontium silicate, magnesium silicate and strontium silicate barium
In the mixture of one or more.
A kind of high colour gamut fluorescent material group the most as claimed in claim 2
Close, it is characterised in that: described green light fluorescent powder may further be plug
Grand green light fluorescent powder, described yellow fluorescent powder may further be silicic acid
Strontium, described red light fluorescent powder, green light fluorescent powder and yellow fluorescent powder
Mean diameter be 5um～30um.
4. the high color of one as according to any one of claim 1-3
Territory phosphor combination, it is characterised in that: described phosphor combination matter
Amount 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: bag
Include and weigh mass ratio for (1～4): (0.5～2): (0.5～2) red
Emitting phosphor, green light fluorescent powder and yellow fluorescent powder are uniform with colloid
Being mixed to get fluorescent glue, wherein, described red light fluorescent powder is fluorine silicon
Acid potassium, yellow fluorescent powder is silicate, and uses described further
Fluorescent glue prepares required white light LEDs.
6. a kind of white light LEDs preparation side as claimed in claim 5
Method, it is characterised in that: described colloid is silica gel, described fluorescent material
Quality account for the 30%～50% of fluorescent material and silica gel gross mass.
7. a kind of white light LEDs preparation side as claimed in claim 5
Method, it is characterised in that be mixed into ball milling mixing described in:, in mixing
Time add at least one abrading-ball, a diameter of the 3 of described abrading-ball～10mm.
8. a kind of white light LEDs preparation side as claimed in claim 7
Method, 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 fluorescent glue,
Described fluorescent glue is for (1～4) by mass ratio: (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 potassium fluosilicate, and gold-tinted is glimmering
Light powder is silicate.
10. a kind of white light LEDs as claimed in claim 9, it is special
Levy and be: described white light LEDs is by blue light or ultraviolet excitation gained.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922957A (en) * | 2018-06-27 | 2018-11-30 | 朗昭创新控股（深圳）有限公司 | Fluorescent glue, fluorescent film and preparation method thereof |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922957A (en) * | 2018-06-27 | 2018-11-30 | 朗昭创新控股（深圳）有限公司 | Fluorescent glue, fluorescent film and preparation method thereof |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
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