CN109740176A - Three-color phosphor LED proportion and dispensing amount recommended method based on least square method - Google Patents
Three-color phosphor LED proportion and dispensing amount recommended method based on least square method Download PDFInfo
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 172
- 238000012546 transfer Methods 0.000 claims abstract description 43
- 239000003292 glue Substances 0.000 claims description 26
- 239000000084 colloidal system Substances 0.000 claims description 18
- 239000012296 anti-solvent Substances 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 15
- 230000004907 flux Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003086 colorant Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 8
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 4
- 241001025261 Neoraja caerulea Species 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The present invention relates to a kind of three-color phosphor LED proportion and dispensing amount recommended method based on least square method, comprising: choose three-color phosphor chromaticity coordinates；According to three-color phosphor chromaticity coordinates, mixed fluorescent powder chromaticity coordinates is calculated；According to mixed fluorescent powder chromaticity coordinates, target color coordinates are calculated；According to target color coordinates, fluorescent powder unit volume transfer efficiency is calculated；According to target color coordinates and fluorescent powder unit volume transfer efficiency, fluorescent powder volume is calculated；According to fluorescent powder volume, fluorescent powder quality is calculated；According to fluorescent powder quality, quality proportioning is calculated；According to quality proportioning, dispensing amount is calculated.Recommended method proposed by the present invention, when enterprise customer inputs correlative information and product information, it can recommend three color different colours fluorescent powder quality proportioning out by this method, the data-optimized iteration of sustainable utilization obtains, be conducive to improve the accuracy rate of proportion, it helps engineer to shorten sample, test-manufactr ing time, reduces production cost, improve production efficiency and yield.
Description
Technical field
The invention belongs to fluorescent powder LED proportion technique fields, and in particular to a kind of three fluorescence based on least square method
Powder LED proportion and dispensing amount recommended method.
Background technique
In recent years, the LED industry in China has apparent industry development advantage, especially in environmentally protective development and consumption
Under the promotion of demand, LED application product field is huge in the fields such as display, illumination, optic communication market potential.White-light LED encapsulation
Critical material --- the main body chemical composition of fluorescent powder, the type of activator and cosolvent, concentration, the appearance of crystal of process application
Looks, crystal structure, granular size, thermal stability etc. all directly affect luminous efficiency, and then influence the luminescent properties of LED.
Currently, realizing that white light for illumination LED mainly uses " Blue-Ray technology " to cooperatively form with fluorescent powder, specific method is main
There are three colors: blue-ray LED+yellow fluorescent powder；The light of three chips is directly mixed into white light by RGB three-color LED；Ultraviolet LED+
Multicolor phosphor.Wherein, blue-ray LED+yellow fluorescent powder is current main stream approach, i.e., by the yellow fluorescence with certain wave band
After powder is mixed with epoxy or silica gel, it is potted in blue-light LED chip surrounding, chip blue light and fluorescent powder are stimulated the sodium yellow of generation
It is mixed to form white light.
Due to the higher cost of yellow fluorescent powder, and it is lower using single yellow fluorescent powder colour rendering index, so generally
White light LEDs seldom are made with single yellow fluorescent powder, but pass through red fluorescence powder, green emitting phosphor, yellow fluorescent powder allotment
Equiwavelength's yellow.But influence of the three-color phosphor to LED colour rendering index, colour temperature is different, reasonable fluorescent powder proportion and fluorescence
The proportion (abbreviation rubber powder ratio) of powder and glue is most important to white light LEDs luminescent properties.The dispensing amount of every glass of glue also can shadow simultaneously
Ring white-light emitting efficiency.And the setting of fluorescent powder proportion and dispensing amount at present depends on the artificial experience of engineer, it is time-consuming
Effort, low efficiency, cost of labor is larger, and is easy error.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of three colors based on least square method
Fluorescent powder LED proportion and dispensing amount recommended method.The technical problem to be solved in the present invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of, and the three-color phosphor LED based on least square method is matched and dispensing amount recommendation side
Method, comprising:
S1, three-color phosphor chromaticity coordinates is chosen；
S2, according to the three-color phosphor chromaticity coordinates, calculate mixed fluorescent powder chromaticity coordinates；
S3, according to the three-color phosphor chromaticity coordinates, calculate target color coordinates；
S4, according to the target color coordinates, calculate three-color phosphor unit volume transfer efficiency；
S5, according to the target color coordinates and the three-color phosphor unit volume transfer efficiency, calculate three-color phosphor
Volume；
S6, according to the three-color phosphor volume, calculate three-color phosphor quality；
S7, according to the three-color phosphor quality, calculate quality proportioning；
S8, according to the quality proportioning, calculate dispensing amount.
In one embodiment of the invention, step S1 includes:
It is glimmering as three color to choose red fluorescence powder chromaticity coordinates, green emitting phosphor chromaticity coordinates, yellow fluorescent powder chromaticity coordinates
Light pink colour coordinate.
In one embodiment of the invention, step S2 includes:
Establish secondary colour coordinate model；
According to the secondary colour coordinate model and the three-color phosphor chromaticity coordinates, mixed fluorescent powder chromaticity coordinates is calculated.
In one embodiment of the invention, the mixed fluorescent powder chromaticity coordinates expression formula are as follows:
Wherein, (x4,y4) it is mixed fluorescent powder chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is green
Fluorescent powder chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, VR is red fluorescence powder volume, and VG is green emitting phosphor volume,
VY is yellow fluorescent powder volume, and L1, L2 are respectively fluorescent powder unit volume transfer efficiency ratio, and L1=LG/LR, L2=LY/
LR, LR are red fluorescence powder unit volume transfer efficiency, and LG is green emitting phosphor unit volume transfer efficiency, and LY is yellow fluorescence
Powder unit volume transfer efficiency.
In one embodiment of the invention, step S3 includes:
Establish luminous flux model and target color coordinates model；
According to the luminous flux model, the target color coordinates model and the three-color phosphor chromaticity coordinates, described in calculating
Target color coordinates.
In one embodiment of the invention, the target color coordinates expression formula are as follows:
Wherein, (xt,yt) it is target color coordinates, (xb,yb) it is blue chip chromaticity coordinates, (xr,yr) it is red fluorescence pink colour
Coordinate, (xg,yg) it is green emitting phosphor chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, h is colloid thickness, and VR is red
Fluorescent powder volume, VG are green emitting phosphor volume, and VY is yellow fluorescent powder volume, and L1, L2 are respectively that fluorescent powder unit volume turns
Rate ratio is changed, and L1=LG/LR, L2=LY/LR, LR are red fluorescence powder unit volume transfer efficiency, LG is green emitting phosphor
Unit volume transfer efficiency, LY are yellow fluorescent powder unit volume transfer efficiency.
In one embodiment of the invention, step S5 includes:
According to the target color coordinates and the three-color phosphor unit volume transfer efficiency, least square method, meter are utilized
Calculate the three-color phosphor volume.
In one embodiment of the invention, step S7 includes:
Establish dispensing amount model；
According to the dispensing amount model and the three-color phosphor quality, the quality proportioning is calculated.
In one embodiment of the invention, the quality proportioning are as follows:
Wherein, mrFor red fluorescence powder quality, mgFor green emitting phosphor quality, myFor yellow fluorescent powder quality, mAjFor A glue
Quality, krationFor antisolvent precipitation powder ratio.
In one embodiment of the invention, the dispensing amount expression formula are as follows:
Wherein, V is dispensing amount, and VR is red fluorescence powder volume, and VG is green emitting phosphor volume, and VY is yellow fluorescence powder
Product, mAjFor A colloid amount, pAjFor A glue density, pBjFor B glue density, pkFor antisolvent precipitation powder density, krationFor antisolvent precipitation powder ratio.
Compared with prior art, beneficial effects of the present invention:
The present invention utilizes algorithm and historical data based on big data, provides a kind of fluorescent powder quality proportioning and dispensing amount
Recommended method can recommend out that three kinds not by this method when enterprise customer inputs correlative information and when product information
With color fluorescence powder quality proportioning, the data-optimized iteration of sustainable utilization is obtained, and is conducive to the accuracy rate for improving proportion, is helped engineering
Teacher shortens sample, test-manufactr ing time, reduces production cost, improves production efficiency and yield.
Detailed description of the invention
Fig. 1 is a kind of three-color phosphor LED proportion and dispensing amount based on least square method provided in an embodiment of the present invention
The flow diagram of recommended method.
Specific embodiment
Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment one
Referring to Figure 1, Fig. 1 is that a kind of three-color phosphor LED based on least square method provided in an embodiment of the present invention matches
Than the flow diagram with dispensing amount recommended method.
A kind of three-color phosphor LED proportion and dispensing amount recommendation side based on least square method provided in an embodiment of the present invention
Method, comprising:
S1, three-color phosphor chromaticity coordinates is chosen；
S2, according to three-color phosphor chromaticity coordinates, calculate mixed fluorescent powder chromaticity coordinates；
S3, according to three-color phosphor chromaticity coordinates, calculate target color coordinates；
S4, according to target color coordinates, calculate three-color phosphor unit volume transfer efficiency；
S5, according to target color coordinates and three-color phosphor unit volume transfer efficiency, calculate three-color phosphor volume；
S6, according to three-color phosphor volume, calculate three-color phosphor quality；
S7, according to three-color phosphor quality, calculate quality proportioning；
S8, according to quality proportioning, calculate dispensing amount.
Before calculating quality proportioning and dispensing amount, it is necessary first to provide basic modeling conditions.
Specifically, the practical each quality of material proportion of definition are as follows:
mr:mg:my:mAj:mBj:mk=a:b:c:kAj:kBj:kk (1-1)
Wherein, mr,mg,my,mAj,mBj,mkRespectively red fluorescence powder quality, green emitting phosphor quality, yellow fluorescence silty
Amount, A colloid amount, B colloid amount and antisolvent precipitation silty amount.
The density of corresponding each material are as follows: pr,pg,py,pAj,pBj,pk, then have
It enables:
R=rr+rg+ry+rAj+rBj+rk (1-3)
According to practical each quality of material proportion, each material density and formula (1-2), can be calculated in three-color phosphor each
Fluorescent powder product is respectively as follows:
Wherein, VR, VG, VY are each fluorescent powder volume, and V is overall volume,For each fluorescent powder fraction.
LR is defined, LG, LY are respectively the unit volume transfer efficiency of each fluorescent powder, LR, LG, the build-in attribute of LY and material
It is related, when data volume is larger, it is believed that LR, LG, LY are a more stable constants, but when data volume is smaller, can be led to
Least Square Method is crossed to obtain.
Each fluorescent powder conversion ratio is defined to be respectively as follows:
Wherein, betaR, betaG, betaY are respectively each fluorescent powder conversion ratio, are equal to each fluorescent powder unit volume conversion effect
Each fluorescent powder volume of rate * can also be expressed as each fluorescent powder integral of each fluorescent powder unit volume transfer efficiency * overall volume *
Number, LR, LG, LY are respectively each fluorescent powder unit volume transfer efficiency, and VR, VG, VY is each fluorescent powder volume.
Again from luminous flux kernel model:
Wherein, PB is blue chip luminous flux, and PR, PG, PY is each fluorescent powder luminous flux, PB0For blue light unit luminous flux,
AlphaB is blue light energy loss coefficient, and betaR, betaG, betaY is each fluorescent powder conversion ratio, and h is colloid thickness, if without going through
History dispensing amount replaces colloid thickness with cavity volume.
PB, PG, PY can be obtained with divided by PR:
It is right againTaylor series expansion is carried out, then can be incited somebody to action under first approximationIt is write as:
1-7 and 1-8 can be write as by formula 1-5
Wherein: LR, LG, LY are each fluorescent powder unit volume transfer efficiency；My each fluorescent powder volume of VR, VG, VY, h is glue
Body thickness.
After having introduced basic modeling conditions, need to carry out LED proportion selection.
Here setting three-color phosphor is respectively red fluorescence powder, green emitting phosphor, yellow fluorescent powder, corresponding chromaticity coordinates point
It Wei not (xr,yr), (xg,yg),(xy,yy), white light needs to mix this three-color phosphor in order to obtain.
Particularly, in the specific embodiment of the invention, step S2 includes:
Establish secondary colour coordinate model；
According to secondary colour coordinate model and three-color phosphor chromaticity coordinates, mixed fluorescent powder chromaticity coordinates is calculated.
Particularly, in the specific embodiment of the invention, mixed fluorescent powder chromaticity coordinates are as follows:
Wherein, (x4,y4) it is mixed fluorescent powder chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is green
Fluorescent powder chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, VR is red fluorescence powder volume, and VG is green emitting phosphor volume,
VY is yellow fluorescent powder volume, and L1, L2 are respectively fluorescent powder unit volume transfer efficiency ratio, and L1=LG/LR, L2=LY/
LR, LR are red fluorescence powder unit volume transfer efficiency, and LG is green emitting phosphor unit volume transfer efficiency, and LY is yellow fluorescence
Powder unit volume transfer efficiency.
Define (x4,y4) it is the mixed chromaticity coordinates of this three-color phosphor, which is that blue chip chromaticity coordinates and aim colour are sat
Certain point on mark connection extended line, the maximum fluorescent powder chromaticity coordinates of wavelength difference is connected with other two fluorescent powder chromaticity coordinates
It connects, and meets at the extended line, taking two intersection point average values is (x4,y4).It is theoretical according to any chromaticity coordinates of CIE, it can be by (x4,y4)
It indicates are as follows:
Wherein, (x4,y4) it is mixed fluorescent powder chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is green
Fluorescent powder chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, PR, PG, PY is each fluorescent powder luminous flux.
To formula (1-11) simultaneously divided by PR, and formula (1-5) is substituted into, obtains following formula:
Wherein, (x4,y4) it is mixed fluorescent powder chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is green
Fluorescent powder chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, VR is red fluorescence powder volume, and VG is green emitting phosphor volume,
VY is yellow fluorescent powder volume, and LR is red fluorescence powder unit volume transfer efficiency, and LG is the conversion of green emitting phosphor unit volume
Efficiency, LY are yellow fluorescent powder unit volume transfer efficiency.
It enablesFormula (1-10) can be obtained in substitution formula (1-12).
Particularly, in the specific embodiment of the invention, step S3 includes:
Establish luminous flux model and target color coordinates model；
According to luminous flux model, target color coordinates model and mixed fluorescent powder chromaticity coordinates, target color coordinates are calculated.
Particularly, in the specific embodiment of the invention, target color coordinates expression formula are as follows:
Wherein, (xt,yt) it is target color coordinates, (xb,yb) it is blue chip chromaticity coordinates, (xr,yr) it is red fluorescence pink colour
Coordinate, (xg,yg) it is green emitting phosphor chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, h is colloid thickness, and VR is red
Fluorescent powder volume, VG are green emitting phosphor volume, and VY is yellow fluorescent powder volume, and L1, L2 are respectively that fluorescent powder unit volume turns
Rate ratio is changed, and L1=LG/LR, L2=LY/LR, LR are red fluorescence powder unit volume transfer efficiency, LG is green emitting phosphor
Unit volume transfer efficiency, LY are yellow fluorescent powder unit volume transfer efficiency.
Specifically, (x is definedt,yt) it is target color coordinates, (x theoretical according to any chromaticity coordinates of CIEt,yt) may be expressed as:
Wherein, (xb,yb) it is blue chip chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is that green is glimmering
Light pink colour coordinate, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, PB is blue chip luminous flux, and PR, PG, PY is respectively each fluorescent powder
Luminous flux.
To formula (1-14) molecule denominator with divided by PR, and by formula (1-9) andSubstitution formula (1-14)
To formula (1-13).
Each fluorescent powder unit volume transfer efficiency is calculated using least square method further according to target color coordinates.
Specifically, after obtaining target color coordinates, each fluorescent powder unit volume can be calculated according to least square method
Transfer efficiency LR.
The LR that finds out andSolve LG, LY.
For product to be produced, (xt,yt) it is known that corresponding (xb,yb),(xr,yr),(xg,yg),(xy,yy) can be from
Chip wavelength parameter and fluorescent powder excitation wavelength parameter obtain, and for baking rear model offline, colloid thickness h is cavity depth
H, for the model after line is roasting, colloid thickness h need to be calculated according to dispensing amount and support parameter.White light is matched, three fluorescence
The mixed chromaticity coordinates of powder is on blue chip chromaticity coordinates and target color coordinates line extended line.
Particularly, in the specific embodiment of the invention, step S5 includes:
It is glimmering to calculate three colors using least square method according to target color coordinates and three-color phosphor unit volume transfer efficiency
The volume of light powder.
V1=VG/VR, V2=VY/VR are enabled, V1, V2 can be solved by formula (1-10),
Specifically, by target color coordinates (xt,yt), each fluorescent powder unit volume transfer efficiency LR, LG, LY and colloid thickness h
VR can be calculated using least square method in substitution formula (1-13).
Definition further according to V1, V2 and obtained VR, can solve VG, VY.
After completing fluorescent powder proportion selection, need to carry out dispensing amount recommendation.
Particularly, in the specific embodiment of the invention, step S7 includes:
Establish dispensing amount model；
According to the quality of dispensing amount model and three-color phosphor, quality proportioning is calculated.
Particularly, in the specific embodiment of the invention, quality proportioning are as follows:
Wherein, mrFor red fluorescence powder quality, mgFor green emitting phosphor quality, myFor yellow fluorescent powder quality, mAjFor A glue
Quality, krationFor antisolvent precipitation powder ratio.
Each material quality may be expressed as: m in dispensing linkr、mg、my、mAj、mBj、mk, corresponding density is represented by pr、pg、
py、pAj、pBj、pk.The quality m of each fluorescent powder can be obtained according to obtained VR, VG, VY and corresponding density is solvedr、mg、my。
mr=pr*VR (1-15)
mg=pg*VG (1-16)
my=py*VY (1-17)
According to the specified requirements in dispensing, since the ratio of A glue, B glue is fixed as 0.4:1.6, the ratio of A glue and antisolvent precipitation powder
Example is not fixed, i.e. krationPossible value has: 0.016,0.02,0.03, as shown in formula (1-18) and formula (1-19):
mAj:mBj=0.4:1.6 (1-18)
mAj:mk=0.4:kration (1-19)
If A colloid product, B colloid product, antisolvent precipitation powder product are respectively VAj, VBj, VK, dispensing amount V, according to above-mentioned quality
VR, VG, VY that proportion and solution obtain, can be obtained the quality formula of A glue are as follows:
And according to constraint condition, m can be acquiredBj,mk。
After above-mentioned quality is found out, m is converted by mass ratioAj=0.4, quality proportioning can be obtained are as follows:
Wherein, mrFor red fluorescence powder quality, mgFor green emitting phosphor quality, myFor yellow fluorescent powder quality, mAjFor A glue
Quality, krationFor antisolvent precipitation powder ratio.
Client matches specific mass according to recommended ratio data weighing material, based on practical every glass of glue, solves the point of every glass of glue
Glue amount.
Particularly, in the specific embodiment of the invention, dispensing amount expression formula are as follows:
Wherein, V is dispensing amount, and VR is red fluorescence powder volume, and VG is green emitting phosphor volume, and VY is yellow fluorescence powder
Product, mAjFor A colloid amount, pAjFor A glue density, pBjFor B glue density, pkFor antisolvent precipitation powder density, krationFor antisolvent precipitation powder ratio.
Specifically, in the present embodiment, the wavelength chip_params=454nm of blue chip, support parameter (rectangular, bottom
Length, bottom width, mouth be long, mouth width, depth are respectively 2.12mm, 1.3mm, 2.8mm, 2.16mm, 0.5mm), antisolvent precipitation powder parameter is (close
Degree=50g/L, quality=0.03g), A glue density=1.7g/cm3, A colloid amount=0.4g, B glue density=1.7g/cm3, B colloid
Amount=1.6g.Fluorescent powder parameter mainly includes excitation wavelength, particle diameter, density, quality.Red, green, yellow fluorescent powder ginseng
Number is respectively (626nm, 3um, 3.8g/cm3,0.53316g)、(535nm、3um、4.8g/cm3、0.04312g)、(535nm、
1nm、4.8g/cm3、0.43g)。
Specific solution procedure is as follows:
The volume of each fluorescent powder in a LED particle is solved first；
Firstly, solving each fluorescent powder volume VR, VG, VY in a LED particle according to least square method.In this example,
Acquiring each fluorescent powder volume VR, VG, VY according to least square method is respectively 1.14502065e-05cm3、2.44564961e-06cm3、
0.00013343cm3。
Further according to each fluorescent powder volume VR, VG, VY, each fluorescent powder chromaticity coordinates (xy,yy)、(xy,yy)、(xy,yy) and blue
Chip chromaticity coordinates (xb,yb), red fluorescence powder unit volume transfer efficiency LR and target color coordinates (xt,yt) and each fluorescent powder
Ratio L1, L2 convolution (1-13) of unit volume transfer efficiency solve the glue thickness h that should currently use.L1 in this example,
L2, LR be respectively 4.46861,0.10887,8533480.79363, consequently recommended glue thickness h be 0.0300mm.
Finally according to the above-mentioned glue thickness h acquired, dispensing amount V is calculated.In this example, consequently recommended dispensing amount V
For 0.00119cm3。
Method proposed by the present invention, using algorithm and historical data based on big data, when enterprise customer inputs correlative
When expecting information and product information, fluorescent powder quality proportioning, the data-optimized iterative algorithm mould of sustainable utilization can be recommended by algorithm
Type is conducive to improve proportion speed rate, engineer is helped to shorten sample, test-manufactr ing time, reduce production cost, improves production efficiency
And yield.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of three-color phosphor LED proportion and dispensing amount recommended method based on least square method characterized by comprising
S1, three-color phosphor chromaticity coordinates is chosen；
S2, according to the three-color phosphor chromaticity coordinates, calculate mixed fluorescent powder chromaticity coordinates；
S3, according to the three-color phosphor chromaticity coordinates, calculate target color coordinates；
S4, according to the target color coordinates, calculate three-color phosphor unit volume transfer efficiency；
S5, according to the target color coordinates and the three-color phosphor unit volume transfer efficiency, calculate three-color phosphor volume；
S6, according to the three-color phosphor volume, calculate three-color phosphor quality；
S7, according to the three-color phosphor quality, calculate quality proportioning；
S8, according to the quality proportioning, calculate dispensing amount.
2. the method according to claim 1, wherein step S1 includes:
Red fluorescence powder chromaticity coordinates, green emitting phosphor chromaticity coordinates, yellow fluorescent powder chromaticity coordinates are chosen as the three-color phosphor
Chromaticity coordinates.
3. the method according to claim 1, wherein step S2 includes:
Establish secondary colour coordinate model；
According to the secondary colour coordinate model and the three-color phosphor chromaticity coordinates, mixed fluorescent powder chromaticity coordinates is calculated.
4. according to the method described in claim 3, it is characterized in that, the mixed fluorescent powder chromaticity coordinates expression formula are as follows:
Wherein, (x4,y4) it is mixed fluorescent powder chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates, (xg,yg) it is green fluorescence
Pink colour coordinate, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, VR is red fluorescence powder volume, and VG is green emitting phosphor volume, and VY is
Yellow fluorescent powder volume, L1, L2 are respectively fluorescent powder unit volume transfer efficiency ratio, and L1=LG/LR, L2=LY/LR, LR
For red fluorescence powder unit volume transfer efficiency, LG is green emitting phosphor unit volume transfer efficiency, and LY is yellow fluorescent powder list
Position volume transfer efficiency.
5. the method according to claim 1, wherein step S3 includes:
Establish luminous flux model and target color coordinates model；
According to the luminous flux model, the target color coordinates model and the three-color phosphor chromaticity coordinates, the target is calculated
Chromaticity coordinates.
6. according to the method described in claim 5, it is characterized in that, the target color coordinates expression formula are as follows:
Wherein, (xt,yt) it is target color coordinates, (xb,yb) it is blue chip chromaticity coordinates, (xr,yr) it is red fluorescence powder chromaticity coordinates,
(xg,yg) it is green emitting phosphor chromaticity coordinates, (xy,yy) it is yellow fluorescent powder chromaticity coordinates, h is colloid thickness, and VR is red fluorescence powder
Volume, VG are green emitting phosphor volume, and VY is yellow fluorescent powder volume, and L1, L2 are respectively fluorescent powder unit volume conversion ratio ratio
Value, and L1=LG/LR, L2=LY/LR, LR are red fluorescence powder unit volume transfer efficiency, LG is green emitting phosphor unit bodies
Product transfer efficiency, LY are yellow fluorescent powder unit volume transfer efficiency.
7. the method according to claim 1, wherein step S5 includes:
Institute is calculated using least square method according to the target color coordinates and the three-color phosphor unit volume transfer efficiency
State three-color phosphor volume.
8. the method according to claim 1, wherein step S7 includes:
Establish dispensing amount model；
According to the dispensing amount model and the three-color phosphor quality, the quality proportioning is calculated.
9. according to the method described in claim 8, it is characterized in that, the quality proportioning are as follows:
Red fluorescence powder: green emitting phosphor: yellow fluorescent powder: A glue: B glue: antisolvent precipitation powder=
Wherein, mrFor red fluorescence powder quality, mgFor green emitting phosphor quality, myFor yellow fluorescent powder quality, mAjFor A colloid amount,
krationFor antisolvent precipitation powder ratio.
10. the method according to claim 1, wherein the dispensing amount expression formula are as follows:
Wherein, V is dispensing amount, and VR is red fluorescence powder volume, and VG is green emitting phosphor volume, and VY is yellow fluorescent powder volume,
mAjFor A colloid amount, pAjFor A glue density, pBjFor B glue density, pkFor antisolvent precipitation powder density, krationFor antisolvent precipitation powder ratio.
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