CN106601892A - Full spectrum LED phosphor composition and high color white light LED lamp - Google Patents
Full spectrum LED phosphor composition and high color white light LED lamp Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
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- 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
- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- 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
Abstract
The invention discloses a full spectrum LED phosphor composition and a high color white light LED lamp. The composition comprises 78% to 88% of green phosphor with the emission peak of 500 nm to 550 nm under blue light excitation and 12% to 22% of red phosphor with the emission peak of 625 nm to 670 nm under blue light excitation, the phosphor composition has a general color rendering index larger than 95 under CCT of about 2700K to 6000K has a full spectrum close to natural light, the package of 2700K to 6000K color temperature can be realized, the yield is high, and the phosphor composition can be widely applied to an occasion with a strict color discrimination requirement such as lighting, printing and dyeing, jewelry, and cosmetics.
Description
Technical field
The present invention relates to lighting technical field, aobvious more particularly to a kind of full-spectrum LED containing fluorescent powder composition and height
Color white LED lamp.
Background technology
Specify 15 standard color samples in the world, and broader CRI (R1-R15) can be calculated by its mean value, but generally
CRI is defined as into the mean value of 8 standard color samples (R1-R8), its so-called general colour rendering index, and it is abbreviated as Ra.Especially
Ground, the red colour rendering of R9 saturations is very important for the application of some scopes.
At present, the white light LEDs of main flow are to excite YAG using InGaN blue chips:Ce3+Fluorescent material produces complementary with blue light
Gold-tinted, and then mix to realize.But, due to YAG:Ce3+In fluorescent material, red-light spectrum energy accounts for total spectral energy
8～15%, far below the ratio of green-yellow light.Therefore, the product colour rendering index for manufacturing in this way is low, typically left 70
The right side, and colour temperature is higher, substantially in more than 5500K, requires that (3000～5000K) is present with the optimum visual of human eye certain inclined
Difference, therefore it is not used to domestic lighting.For this purpose, researcher is wished by YAG:Ce3+Middle addition rouge and powder is shown with reaching to be lifted
The purpose of colour index.Existing but (Lu, Y)3(Al,Ga)5O12:In Ce systems, YAG:Ce3+Its Emission Spectrum Peals wavelength model
Enclose for 540-580nm, GAG system peak wavelengths scope is 515-550nm, LuAG system peak wavelengths scope is 515-545nm,
The half-peak breadth of these three systems is wider, and peak value ripple is yellow green wave band, if while reaching full spectrum, adjustable color section and showing
Colour index is up to more than 90 target, and only the combination by existing bloom+rouge and powder is impossible.Although this kind of LED is fitted
Together in some applications, but many users expect a kind of light source with higher Ra values, and a kind of Ra values are similar to the white heat of 95-100
The light source of lamp.
Also some LED, which employs UV transmitting chips and phosphor blends, the phosphor blends include be designed as by
UV radiation is converted into red, the green and blue emitting phophor of visible ray.Its spectrum often in the deep red region of spectrum, especially exists
There is gap (spectral intensity is essentially 0) or larger disappearance, this seriously reduces R9 values near 650nm.
In sum, exploitation is new (is defined as 400 to very close to each other between 700nm, i.e., does not exist and send out with full spectrum
Penetrate the region that spectral intensity is about 0), and have with high Ra values, the phosphor blends of R1-R15 values and reliable mixed powder scheme
Beneficial to the fast development for promoting LED illumination.
The content of the invention
It is an object of the invention to provide a kind of full-spectrum LED containing fluorescent powder composition and high colour developing white LED lamp, to solve
Fluorescent material used by prior art or its combination colour rendering index are low, and colour temperature is higher, is not suitable for the problem of domestic lighting LED.
The purpose of the present invention is achieved through the following technical solutions：A kind of full-spectrum LED containing fluorescent powder composition, including matter
The following component of amount percentage：In blue light lower emission peak is excited in green emitting phosphor accounting 78%- of 500nm～550nm
88%；In blue light lower emission peak is excited in red fluorescence powder accounting 12%-22% of 625nm～670nm.
The green emitting phosphor consists of improvement (Lu, Y)3(Al,Ga)5O12:Ce, it is at routine (Lu, Y)3(Al,Ga)5O12:Add special elementses on the basis of Ce powder formulas, change sintering process and be obtained, it has lower peak wavelength 500-
550nm。
The improvement (Lu, Y)3(Al,Ga)5O12:The chemical general formula of Ce is Y3-a-bCeaAbAl5-c-2dGacSidMdO12；Formula
In, A is at least one in Lu, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, and M is Mg, Ca, Sr, Ba
In at least one；And 0.003≤a≤0.3,0≤b≤2.997,0.001≤c≤4,0.001<d≤0.5.The fluorescent material
Preparation method is comprised the following steps：
A, according to chemical general formula Y3-a-bCeaAbAl5-c-2dGacSidMdO12Middle each element stoichiometric proportion weighs respectively each unit
The oxide or carbonated starting material of element, by each raw material for weighing 1h is mixed in three-dimensional material mixer, then weighs raw material gross mass
1%～15% flux (BaCl2With the mixture of NaCl), and by the raw material for being weighed and flux in three-dimensional material mixer
Mix 2h again；
B, mixture obtained in step a is warming up to 1300～1450 DEG C under reducing atmosphere condition, and it is incubated 0.5～
2.5h, is down to afterwards room temperature, and sintered product is obtained；
C, sintered product is taken out, after ball milling, pickling, drying, obtain final product this kind of improvement green emitting phosphor, its peak value ripple
A length of 500-550nm.
The improvement (Lu, Y)3(Al,Ga)5O12:The chemical general formula of Ce is CexLu3-x-yMyAl5O12, in formula, M be La, Gd,
At least one in Pr, Nd, Sm, Eu, Ga, Tb, Dy, Ho, Er, Tm, Yb, Sc, and 0<x<0.1,0<y<0.05, x: y=2: 1.
The preparation method of the fluorescent material is comprised the following steps：
A, by chemical general formula CexLu3-x-yMyAl5O12Middle each element stoichiometric proportion is weighed containing Ce, Lu, M, Al element
Oxide or carbonate, mixing, grinding obtains mixture；
B, sintering：The flux of mixture gross mass 0.5%-5% is added in the mixture, and flux is H3BO3Or
BaF2In one or two with arbitrary proportion constitute mixtures, with 5-10 DEG C of heating rate liter under reducing atmosphere condition
Temperature is incubated 1-3h to 1300-1500 DEG C, is down to room temperature naturally afterwards, obtains fluorescent material crude product；
It is c, the fluorescent material crude product is ground, washed with the hydrochloric acid solution that mass percent concentration is 5%-20% afterwards
After washing, being dried 2-3h at 40-80 DEG C, this kind of improvement green emitting phosphor is obtained final product, its peak wavelength scope is 510-550nm.
The red fluorescence powder consists of SrLiAl3N4:Eu or (Ca, Sr, Mg) AlSiN3:Eu。
The green emitting phosphor and red fluorescence powder grain diameter are uniformly unified, and its K value meets 0.4≤K=(D90-
D50)/D10≤1.4。
The color dot of the containing fluorescent powder composition is located on the black body locus of 1931CIE chromatic diagrams or color dot is on black body locus
Deviation x=± 0.02, y=± 0.02.
Present invention also offers a kind of high colour developing white LED lamp, the LED is by above-mentioned containing fluorescent powder composition collocation blue light core
Piece is made, and blue chip wavelength band is 450nm-455nm.The LED has the average color rendering index Ra (R1-R8) more than 95
With the colour rendering index CRI (R1-R14) more than 90, CRI (R1-R14) refers to the mean value of R1-R14.In addition, the white light of the LED
The full spectrum of the correlated colour temperature with 2700K～6000K and 400nm～700nm.
The launching light spectrogram colour rendering of improvement containing fluorescent powder composition provided by the present invention is good, can realize 2700K-6000K
The encapsulation of colour temperature.Two kinds of powder are only needed to when making LED to be mixed, matching is high between more convenient and fluorescent powder grain, goes out
Optical uniformity is good, is remarkably improved the Bin rates that fall of LED product, and powder Spectrum attenuation uniformity is good, and avoid at high temperature because
Performance difference between several powder and the color drift phenomenon that causes.
LED yield rate provided by the present invention is higher, can be widely applied to illuminate, prints and dyes, jewelry, cosmetic etc. distinguish color
Strict place is not required, blue light harm, protection eyesight can be weakened, alleviated visual fatigue, improve working and learning efficiency, reached
The high-quality of light source is required.Additionally, selected SrLiAl3N4:Eu rouge and powder also contributes to the yield rate of lamp bead.
Description of the drawings
The launching light spectrogram of Fig. 1 comparative examples 1 (5000K).
The launching light spectrogram of Fig. 2 embodiments 1 (2700K).
The launching light spectrogram of Fig. 3 embodiments 4 (5000K).
Fig. 4 is the light-emitting uniformity test result of the encapsulating products of comparative example 1 and embodiment 4.
Fig. 5 is the change curve of double 85 test Ra of comparative example 1 and embodiment 4.
Fig. 6 is the change curve of double 85 test CIE x chromaticity coordinates of comparative example 1 and embodiment 4.
Fig. 7 is the change curve of double 85 test colour temperatures Tc of comparative example 1 and embodiment 4.
Fig. 8 is Spectrum attenuation curve of double 85 tests of comparative example 2 (5000K) with the time.
Fig. 9 is Spectrum attenuation curve of double 85 tests of embodiment 4 (5000K) with the time.
Specific embodiment
Embodiment 1
Blue chip+full spectrum fluorescent compound powder：2700K colour temperatures
A kind of full spectrum fluorescent compound powder of 2700K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 525nm3(Al,Ga)5O12:Ce：79.2%, blue light excites lower emission peak
In the red fluorescence powder SrLiAl of 650nm3N4:Eu：20.8%.The blue chip wavelength of collocation is：450nm-452.5nm.Gained
The launching light spectrogram of product is as shown in Figure 2.
Embodiment 2
Blue chip+full spectrum fluorescent compound powder：3000K colour temperatures
A kind of full spectrum fluorescent compound powder of 3000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 515nm3(Al,Ga)5O12:Ce：78.0%, blue light excites lower emission peak
In the red light fluorescent powder SrLiAl of 650nm3N4:Eu：22.0%.The blue chip wavelength of collocation is：450nm-452.5nm.
Embodiment 3
Blue chip+full spectrum fluorescent compound powder：4000K colour temperatures
A kind of full spectrum fluorescent compound powder of 4000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 520nm3(Al,Ga)5O12:Ce：81.3%, blue light excites lower emission peak
In the red fluorescence powder SrLiAl of 650nm3N4:Eu：18.7%.The blue chip wavelength of collocation is：450nm-452.5nm.
Embodiment 4
Blue chip+full spectrum fluorescent compound powder：5000K colour temperatures
A kind of full spectrum fluorescent compound powder of 5000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 530nm3(Al,Ga)5O12:Ce：85.45%, blue light excites lower emission peak
It is worth the red fluorescence powder SrLiAl in 650nm3N4:Eu：14.55%.The blue chip wavelength of collocation is：452.5nm-455nm.
The launching light spectrogram of products obtained therefrom is as shown in Figure 3.
Embodiment 5
Blue chip+full spectrum fluorescent compound powder：6000K colour temperatures
A kind of full spectrum fluorescent compound powder of 6000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 545nm3(Al,Ga)5O12:Ce：88.0%, blue light excites lower emission peak
In the red fluorescence powder SrLiAl of 650nm3N4:Eu：12.0%.The blue chip wavelength of collocation is：452.5nm-455nm.
Embodiment 6
Blue chip+full spectrum fluorescent compound powder：5000K colour temperatures
A kind of full spectrum fluorescent compound powder of 5000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Improvement green emitting phosphor (Lu, Y) of the emission peak in 525nm3(Al,Ga)5O12:Ce：83.95%, blue light excites lower emission peak
It is worth red light fluorescent powder (Ca, Sr, the Mg) AlSiN in 625nm3:Eu：16.05%.The blue chip wavelength of collocation is：450nm-
452.5nm。
Comparative example 1
With 2 blue chips of embodiment of document CN201410466575.2+full spectrum fluorescent powder：5000K colour temperatures are contrast
Example 1
A kind of full spectrum fluorescent powder of 5000K colour temperatures, including the component that mass percent is following：Blue light excites lower emission peak
It is worth bluish-green emitting phosphor (Sr, Ba, the Sm) Si in 495nm2O2N2:Eu：25.5%, blue light excites lower emission peak 530nm's
Green light fluorescent powder (Lu, Y)3(Al,Ga)5O12:Ce：40%, blue light excite lower emission peak 555nm yellow fluorescent powder (Sr,
Ba)2SiO4:Eu：25.5%, blue light excites lower emission peak in the red light fluorescent powder (Ca, Sr) of 620nm2Si5N8:Eu：9%.Take
The blue chip wavelength matched somebody with somebody is：462.5nm-465nm.The launching light spectrogram of products obtained therefrom is as shown in Figure 1.
Comparative example 2
Blue chip+full spectrum fluorescent compound powder：5000K colour temperatures
A kind of full spectrum fluorescent compound powder of 5000K colour temperatures, including the component that mass percent is following：Blue light is excited down
Normal green phosphor (Lu, Y) of the emission peak in 520nm3(Al,Ga)5O12:Ce：86.17%, blue light excites lower emission peak
It is worth the red light fluorescent powder SrLiAl in 650nm3N4:Eu：13.83%.The blue chip wavelength of collocation is：452.5nm-455nm.
Luminescent properties test is carried out to embodiment 1-6, comparative example 1 and comparative example 2, containing fluorescent powder composition is in LED blue light cores
Piece excite under luminescent properties parameter as shown in Table 1 and Table 2.
Table 1：
As shown in Table 1, peak wavelength is the red fluorescence powder SrLiAl of 650nm3N4:Eu：Application greatly improve encapsulation
The yield rate of lamp bead, the maximum fluorescent material of consumption is cheap improvement (Lu, Y) in scheme provided by the present invention3(Al,
Ga)5O12:Ce green emitting phosphors, it is better than conventional (Lu, Y) in the yield rate of same colour temperature3(Al,Ga)5O12:Ce green emitting phosphors,
Yield rate within the scope of the present invention is superior to comparative example 1, and can realize the encapsulation of wide scope colour temperature.
Table 2：
| Numbering | Ra | CRI | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 | R11 | R12 | R13 | R14 | R15 |
| Comparative example 1 | 89.6 | 84.6 | 91 | 95 | 86 | 90 | 87 | 87 | 85 | 96 | 74 | 79 | 57 | 84 | 97 | 76 | 79.3 |
| Embodiment 1 | 98.3 | 97.4 | 99 | 100 | 97 | 98 | 99 | 98 | 98 | 97 | 92 | 99 | 92 | 99 | 97 | 99 | 99 |
| Embodiment 2 | 97.1 | 96.4 | 99 | 99 | 94 | 94 | 98 | 98 | 97 | 98 | 96 | 95 | 92 | 94 | 99 | 96 | 99 |
| Embodiment 3 | 97.4 | 96.8 | 97 | 99 | 97 | 95 | 97 | 99 | 98 | 97 | 96 | 98 | 91 | 96 | 97 | 98 | 99 |
| Embodiment 4 | 97.6 | 97.6 | 99 | 99 | 98 | 94 | 97 | 99 | 97 | 98 | 99 | 99 | 92 | 98 | 99 | 99 | 99 |
| Embodiment 5 | 96.1 | 95.7 | 99 | 97 | 95 | 93 | 97 | 97 | 95 | 96 | 96 | 95 | 92 | 92 | 98 | 98 | 98 |
| Embodiment 6 | 96 | 94.9 | 95 | 96 | 97 | 96 | 95 | 96 | 97 | 96 | 90 | 93 | 91 | 93 | 96 | 98 | 96 |
| Comparative example 2 | 96.1 | 94.9 | 96 | 97 | 96 | 95 | 96 | 97 | 96 | 96 | 92 | 94 | 92 | 86 | 97 | 98 | 97 |
CRI refers to CRI (R1-R14) in table 2, can be seen that from data in table 2, is combined using the full spectrum fluorescent powder of the present invention
Emission spectrum continuity obtained by thing is good, colour rendering is high, with its average color rendering index Ra of colour temperature Solution Embodiments 4 compared with comparative example
1 is higher by 8%, and by comparative example 2 from the point of view of, normal green phosphor (Lu, Y)3(Al, Ga)5O12：R12 is relatively low in the mixed powder schemes of Ce,
The full Spectroscopy Protocol that R1-R15 is all higher than 90 can not be obtained.
Embodiment 7
Blue chip+full spectrum fluorescent compound powder
A kind of full spectrum fluorescent compound powder of 6000K colour temperatures, including the component that mass percent is following：Blue light is excited down
There is improvement green emitting phosphor (Lu, Y) of the peak for 500nm3(Al, Ga)5O12：Ce：84.71%, blue light excites lower peak wavelength
In red fluorescence powder (Ca, Sr, the Mg) AlSiN of 650nm3：Eu：15.39%.The blue chip wavelength of collocation is：450nm-
452.5nm。
Embodiment 8-20
Using the blue chip of wavelength same as Example 7, using the improvement (Lu, Y) of different peak wavelengths3(Al, Ga)5O12：Ce green emitting phosphors and (Ca, Sr, Mg) AlSiN3：Eu red fluorescence powders, while change both adding proportions, final
To different-colour and the full Spectroscopy Protocol of colour rendering index.Its result is as shown in table 3：
CRI refers to CRI (R1-R14) in table 3, as can be seen from Table 3, by using improvement green emitting phosphor (Lu, Y)3
(Al,Ga)5O12:Ce and red fluorescence powder (Ca, Sr, Mg) AlSiN3:Eu can effectively realize different-colour, and the aobvious fingers of Ra are more than
90 full Spectroscopy Protocol.
The product light-emitting uniformity test of 5000K lamp beads
Comparative example 1 and the two schemes of embodiment 4 are encapsulated into respectively 105 lamp beads and carrys out test product light-emitting uniformity, tested
As a result it is as shown in Figure 4.
Double 85 tests one of 5000K lamp beads
By comparative example 1 and the products obtained therefrom of embodiment 4 temperature be 85 DEG C, humidity be to carry out double 85 lamp beads in the environment of 85%
Test, interruption carries out 1000h, refers to that Ra, CIE x chromaticity coordinates, colour temperature Tc, as Testing index, are detected once, institute every 200h with aobvious
The result of variations for obtaining parameter is shown in Table shown in 4, Fig. 5, Fig. 6, Fig. 7.
Table 4：
The stability that can be seen that the products obtained therefrom of the embodiment of the present invention 4 by the data in upper table is substantially better than the institute of comparative example 1
Obtain product.
Double 85 tests two of 5000K lamp beads
By comparative example 2 and the products obtained therefrom of embodiment 4 temperature be 85 DEG C, humidity be to carry out double 85 lamp beads in the environment of 85%
Test, interruption carries out 1000h, and every 200h once its emission spectrum attenuation curve is detected, test result is as shown in Fig. 8, Fig. 9.
As seen from the figure the anti-attenuation of embodiment 4 is substantially better than comparative example 2.
Claims (10)
1. a kind of full-spectrum LED containing fluorescent powder composition, it is characterised in that including the following component of mass percent：Swash in blue light
Give green emitting phosphor accounting 78%-88% of the emission peak in 500nm～550nm；Lower emission peak is excited to exist in blue light
Red fluorescence powder accounting 12%-22% of 625nm～670nm.
2. full-spectrum LED containing fluorescent powder composition according to claim 1, it is characterised in that the green emitting phosphor composition
To improve (Lu, Y)3(Al,Ga)5O12:Ce。
3. full-spectrum LED containing fluorescent powder composition according to claim 2, it is characterised in that the improvement (Lu, Y)3(Al,
Ga)5O12:The chemical general formula of Ce is Y3-a-bCeaAbAl5-c-2dGacSidMdO12；In formula, A be Lu, La, Pr, Nd, Pm, Sm, Eu,
At least one in Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, M is at least one in Mg, Ca, Sr, Ba；And 0.003≤a≤
0.3,0≤b≤2.997,0.001≤c≤4,0.001<d≤0.5.
4. full-spectrum LED containing fluorescent powder composition according to claim 2, it is characterised in that the improvement (Lu, Y)3(Al,
Ga)5O12:The chemical general formula of Ce is CexLu3-x-yMyAl5O12, in formula, M be La, Gd, Pr, Nd, Sm, Eu, Ga, Tb, Dy, Ho,
At least one in Er, Tm, Yb, Sc, and 0<x<0.1,0<y<0.05, x: y=2: 1.
5. full-spectrum LED containing fluorescent powder composition according to claim 1, it is characterised in that the red fluorescence powder composition
For SrLiAl3N4:Eu or (Ca, Sr, Mg) AlSiN3:Eu。
6. full-spectrum LED containing fluorescent powder composition according to claim 1, it is characterised in that the green emitting phosphor and red
The K values of color fluorescent material meet 0.4≤K=（D90-D50）/D10≤1.4.
7. full-spectrum LED containing fluorescent powder composition according to claim 1, it is characterised in that the color of the containing fluorescent powder composition
Deviation x=± 0.02 that point is on the black body locus of 1931CIE chromatic diagrams or color dot is on black body locus, y=± 0.02.
8. a kind of high colour developing white LED lamp, it is characterised in that the LED arbitrary containing fluorescent powder composition by described in claim 1-7
Collocation blue chip is made.
9. high colour developing white LED lamp according to claim 8, it is characterised in that the LED has average aobvious more than 95
Colour index Ra（R1-R8）, with the colour rendering index CRI more than 90（R1-R14）.
10. high colour developing white LED lamp according to claim 8, it is characterised in that the LED has 2700K ~ 6000K's
Correlated colour temperature, the full spectrum with 400nm ~ 700nm.
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