CN105762257A - Phosphor composition and white light emitting device composed of phosphor - Google Patents
Phosphor composition and white light emitting device composed of phosphor Download PDFInfo
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- CN105762257A CN105762257A CN201610316871.3A CN201610316871A CN105762257A CN 105762257 A CN105762257 A CN 105762257A CN 201610316871 A CN201610316871 A CN 201610316871A CN 105762257 A CN105762257 A CN 105762257A
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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
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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
- C09K11/0883—Arsenides; Nitrides; Phosphides
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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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
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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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7734—Aluminates
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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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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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 provides a phosphor composition and a white light emitting device composed of phosphor. The problems are solved, and a high-quality white light source is achieved. The white light emitting device comprises a blue light emitting diode and the phosphor composition arranged on the blue light emitting diode, the phosphor composition comprises 1 part by weight of yellow lanthanum-silicon-nitrogen compound, 1 part by weight of yellow beta-silicon-aluminum-oxygen-nitrogen compound and 0.3-0.45 part by weight of red calcium-aluminum-silicon-nitrogen compound.
Description
The application is to apply on August 2nd, 2011, and Application No. 201110218861.3 is invention entitled
The division of the application for a patent for invention of " white light emitting device that fluorescent material forms and uses this fluorescent material to form "
Application
Technical field
The invention relates to a kind of fluorescent material composition and the white light emitting device using this fluorescent material to form, and
In particular to a kind of, there is preferable light type, the fluorescent material composition of thermally-stabilised and noenergy saturation problem and white
Color light-emitting device.
Background technology
Based on carbon reduction and the environmental consciousness of Sustainable Development, advanced person various countries of the current world are all phased out height
The traditional lighting of power consumption, and then select white light-emitting diode.The advantage of white light-emitting diode is that volume is little,
Can adjust with fit applications equipment, its response speed is fast, is therefore especially suitable for high-frequency operation.White luminous
The power consumption of diode is low, only the 1/8 to 1/10 of conventional bulb, the 1/2 of daylight lamp, and its life-span is long,
Up to more than 100,000 hours, the problem that incandescent lamp bulb highly energy-consuming can be solved, its can as new illumination with
And display light source, and have power saving and environmental protection concept concurrently, therefore it is called green illumination light source.
The technology of white light-emitting diode was suggested in generation nineteen ninety, and it is by blue light-emitting diode (blue
LED) excite by yttrium aluminium garnet fluorescent powder (Ce-doped YAG phosphor) the generation gold-tinted of doped with cerium, glimmering
The gold-tinted that light powder is sent produces white light with remaining blue light.But, yttrium aluminium garnet fluorescent powder uses
The problem having energy saturated (power saturation) in white light technology, i.e. after the luminance raising of excitation source,
Yttrium aluminium garnet fluorescent powder absorbs excitation source and sends the brightness of gold-tinted after the degree of arrival, can increase again
The brightness added just is restricted.
Therefore, after 2000, propose white based on yellow silicate fluorescent powder (silicate phosphor) and send out
Optical diode is as the another kind of selection of white light technology.Although silicate fluorescent powder does not has the problem that energy is saturated,
But but face the puzzlement of thermally-stabilised (heat stability), i.e. silicate fluorescent powder and be in luminous two for a long time
In the produced high thermal environment of pole pipe, its gold-tinted brightness can gradually decay (decay), causes the fall of white brightness
Low and the skew of colour temperature, and moisture-sensitive and decompose.Therefore develop a kind of new, the problems referred to above can be avoided
Fluorescent material forms, and is one important problem of current industrial circle.
Summary of the invention
The present invention provides a kind of fluorescent material composition and the white light emitting device using this fluorescent material to form, in order to solve
The most above-mentioned known problem also realizes high-quality white radiant.
The present invention provides a kind of white light emitting device, has emission wavelength range including one and contains 440-470nm
Light emitting diode and be arranged on this blue light-emitting diode fluorescent material composition, wherein this fluorescent material group
Becoming to include one first yellow fluorescent powder, peak luminous wavelength is 535-545nm；One second yellow fluorescent powder,
Peak luminous wavelength is 545-555nm；And a red fluorescence powder, peak luminous wavelength is 645-655nm,
Wherein the chromaticity coordinate scope of white light is CIE x:0.25-0.3 and CIE y:022-0.28.
In an embodiment of the present invention, this first yellow fluorescent powder, this second yellow fluorescent powder and this redness are glimmering
The percentage by weight of light powder is 1:1:0.3～0.45.
In an embodiment of the present invention, the ratio of this red fluorescence powder is 0.4.
In an embodiment of the present invention, this first yellow fluorescent powder includes lanthanum silicon-nitrogen compound.
In an embodiment of the present invention, this first yellow fluorescent powder includes La3Si6N11:Ce3+。
In an embodiment of the present invention, this second yellow fluorescent powder includes β-silicon aluminum oxygen nitrogen compound
(β-SiAlON)。
In an embodiment of the present invention, this second yellow fluorescent powder includes Si6-zAlzNzO8-z:Eu2+,0<z<4.2。
In an embodiment of the present invention, this red fluorescence powder includes calcium aluminum silicon-nitrogen compound.
In an embodiment of the present invention, this red fluorescence powder includes CaAlSiN3:Eu2+。
In an embodiment of the present invention, this light emitting diode has peak luminous wavelength 450-460nm.
The present invention provides a kind of white light emitting device, is arranged in this blue light including a blue light-emitting diode and one
Fluorescent material composition on light emitting diode, this fluorescent material composition includes a yellow lanthanum silicon-nitrogen compound, a yellow
β-silicon aluminum oxygen nitrogen compound and a red calcium aluminum silicon-nitrogen compound, wherein this yellow lanthanum silicon-nitrogen compound, this Huang
The percentage by weight of color β-silicon aluminum oxygen nitrogen compound and this redness calcium aluminum silicon-nitrogen compound is 1:1:0.3～0.45.
In an embodiment of the present invention, the ratio of this redness calcium aluminum silicon-nitrogen compound is 0.4.
In an embodiment of the present invention, this yellow lanthanum silicon-nitrogen compound includes La3Si6N11:Ce3+。
In an embodiment of the present invention, this yellow β-silicon aluminum oxygen nitrogen compound includes Si6-zAlzNzO8-z:Eu2+,
0<z<4.2。
In an embodiment of the present invention, this redness calcium aluminum silicon-nitrogen compound includes CaAlSiN3:Eu2+。
The present invention provides a kind of white light emitting device, is arranged in this blue light including a blue light-emitting diode and one
Fluorescent material composition on light emitting diode, this fluorescent material composition include one first nitrogen compound fluorescent material, one the
Nitride compound fluorescent material and one the 3rd nitrogen compound fluorescent material, wherein this second nitrogen compound fluorescent material send out
Optical wavelength peak value between this first nitrogen compound fluorescent material and the 3rd nitrogen compound emission wavelength peak value it
Between.
In an embodiment of the present invention, this first Nitride phosphor includes lanthanum silicon-nitrogen compound, this second nitrogen
Compound fluorescent material includes β-silicon aluminum oxygen nitrogen compound, and the 3rd nitrogen compound fluorescent material includes calcium aluminum silicon nitrification
Thing.
In an embodiment of the present invention, this second nitrogen compound fluorescent material includes Si6-zAlzNzO8-z:Eu2+,
0<z<4.2。
In an embodiment of the present invention, this first Nitride phosphor, this second Nitride phosphor and this
The percentage by weight of three nitrogen compound fluorescent material is 1:1:0.3～0.45.
In an embodiment of the present invention, the ratio of the 3rd nitrogen compound fluorescent material is 0.4.
The present invention provides a kind of fluorescent material composition, including one first fluorescent material, one second fluorescent material and one the 3rd
Fluorescent material, wherein this first fluorescent material includes a lanthanum silicon-nitrogen compound, and this second fluorescent material includes one β-sial
Oxynitrides, the 3rd fluorescent material includes a calcium aluminum silicon-nitrogen compound, and wherein this fluorescent material composition has
The blue light source of emission wavelength peak value 450-460nm excites down, and mixed light produces a white light, the NTSC of this white light
Color saturation is more than 70%.
In an embodiment of the present invention, this first fluorescent material includes La3Si6N11:Ce3+。
In an embodiment of the present invention, this first fluorescent material, the second fluorescent material and the 3rd fluorescent material weight
Percentage ratio is 1:1:0.3～0.45.
In an embodiment of the present invention, the ratio of the 3rd fluorescent material is 0.4.
In an embodiment of the present invention, this second fluorescent material includes Si6-zAlzNzO8-z:Eu2+,0<z<4.2。
In an embodiment of the present invention, the 3rd fluorescent material includes CaAlSiN3:Eu2+。
The white light emitting device of the present invention and the fluorescent material composition that used thereof are to thermally-stabilised and noenergy is saturated
And the problem decomposed of making moist, the fluorescent material composition disclosed by white light emitting device of the present invention can replace known yttrium
Aluminum stone gold-plating stone fluorescent material and silicate fluorescent powder, therefore for for lighting source and display light source, Ke Yiti
White light source for higher quality.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing to this
Bright detailed description of the invention elaborates, wherein:
Fig. 1 illustrates the generalized section of the white light emitting device of one embodiment of the invention.
Fig. 2 illustrate respectively fluorescent material out of the ordinary in embodiment of the present invention fluorescent material composition luminescent spectrum curve chart
Fig. 3 illustrates the luminescent spectrum curve chart of white light emitting device according to an embodiment of the invention.
Fig. 4 illustrates the white light of white light emitting device according to embodiments of the present invention in cie color coordinate diagram
Coordinate range.
Main element symbol description:
100: white light emitting device
101: blue light-emitting diode
103: reflection housing
105: conducting bracket
107: bonding wire
109: adhesive layer
111: fluorescent material forms
Detailed description of the invention
Fig. 1 illustrates the generalized section of the white light emitting device of one embodiment of the invention.Refer to Fig. 1, in vain
Light light-emitting device 100 includes blue light-emitting diode 101, reflection housing 103 and a conducting bracket 105,
Within blue light-emitting diode 101 is arranged at reflection housing 103, and by bonding wire 107 and conducting bracket electricity
Property connect.One adhesive layer 109 is inserted in reflection housing 103 and encapsulates blue light-emitting diode 101, and one is glimmering
Light powder composition 111 is mixed in adhesive layer 109 and is positioned on blue light-emitting diode 101, and fluorescent material forms
111 include the first yellow fluorescent powder, the second yellow fluorescent powder and red fluorescence powder, in order to by blue light emitting two
A part for the blue light that wavelength that pole pipe 101 is sent is shorter is converted into the visible ray of longer wavelength, afterwards with
Remaining blue light and form white light.
In above-mentioned white light emitting device 100, for producing the white light of good chromaticity coordinate, fluorescent material is formed
The first yellow fluorescent powder, the second yellow fluorescent powder and red fluorescence powder in 111 mix in the proper ratio,
Fluorescent material composition 111 emission wavelength range (range of emission wavelength) about from 480nm to
730nm, is the gold-tinted of about 540nm, peak wavelength including peak wavelength (peak wavelength)
Gold-tinted and peak wavelength for about 550nm are the HONGGUANG of about 650nm, and blue light-emitting diode 101
Luminous wave-length coverage is about from 410nm to 480nm, and its peak wavelength is about 450nm-460nm.
Fluorescent material in the invention described above embodiment forms in 111, and the first yellow fluorescent powder includes doped with cerium
Lanthanum silicon-nitrogen compound, its peak luminous wavelength is about 540 ± 5nm, half-wave width (FWHM, full width at
Half maximum) it is 80-100nm, its molecular formula e.g. La3Si6N11:Ce3+, it is available from Mitsubishi Chemical
Company (MCC), model is BY201A.Second yellow fluorescent powder includes with the β-silicon aluminum oxygen nitrogen of europium activation
Compound (Eu-activated β-SiAlON), its peak luminous wavelength is about 550 ± 5nm, a width of 80-100 of half-wave
Nm, its molecular formula e.g. Si6-zAlzNzO8-z:Eu2+, 0 < z < 4.2, it is available from electrochemical (Denka
Chemicals), model is GR230LW.Red fluorescence powder includes with the calcium aluminum silicon-nitrogen compound of europium activation
(Eu-activated CaAlSiN), its peak luminous wavelength is about 650 ± 5nm, a width of 80-110nm of half-wave,
Its molecular formula e.g. CaAlSiN3:Eu2+, it being available from Mitsubishi Chemical Ind, model is BR101D.
Fig. 2 illustrate respectively fluorescent material out of the ordinary in embodiment of the present invention fluorescent material composition 111 luminescent spectrum bent
Line chart.Refer to Fig. 2, the first yellow fluorescent powder is La3Si6N11:Ce3+, under blue light excites, it is luminous
Peak wavelength is about 540nm；Second yellow fluorescent powder is Si6-zAlzNzO8-z:Eu2+,
0 < z < 4.2 (β-SiAlON), under blue light excites, its peak luminous wavelength is about 550nm；Red fluorescence powder
For CaAlSiN3:Eu2+, under blue light excites, its peak luminous wavelength is about 650nm.Reference Fig. 1,
In white light emitting device 100 of the present invention, the assorted fluorescent material shown in Fig. 2 can be mixed in the proper ratio
Close and form fluorescent material composition 111, and after mix with printing opacity sealing, insert formation sealing in reflection housing 103
Layer 109, whereby encapsulation blue light-emitting diode 101.
The luminescent spectrum curve of white light emitting device according to an embodiment of the invention is illustrated with reference to Fig. 3, Fig. 3
Figure.By the first yellow fluorescent powder " La depicted in Fig. 23Si6N11:Ce3+", the second yellow fluorescent powder
“Si6-zAlzNzO8-z:Eu2+, 0 < z < 4.2 " and red fluorescence powder " CaAlSiN3:Eu2+" mix according to a specific ratio
Close and obtain a fluorescent material composition, this luminescent powder composition is put on there is the indigo plant that peak wavelength is 450-460nm
On light-emitting diode, and obtain the luminescent spectrum curve of the white light emitting device such as Fig. 3 embodiment of the present invention
Figure, wherein in fluorescent material composition, the ratio of assorted fluorescent material is respectively the first yellow: the second yellow: red=1:
1:0.3～0.45 (w/w, weight ratio), and more preferably ratio is the first yellow: the second yellow: redness=1:1:
0.4(w/w)。
As it is shown on figure 3, the luminescent spectrum of the white light emitting device of the present embodiment has about 460nm and 545
The peak value of about nm, and whole luminescent spectrum is distributed in comparatively wide wave-length coverage (400nm-730nm)
In, the luminescent spectrum of the present embodiment shows the white mixed light with good colourity coordinate characteristic, and its NTSC
The demand of the LCD backlight such as TV or dynamic display can be particularly well suited for more than 72%.It addition, value
Obtain one to be mentioned that, in above-mentioned fluorescent material forms, add 5-15% (w/w) and size D50For 1-10 μm
Diffusant (diffuser), will can increase the luminosity of whole white light emitting device, above-mentioned diffusant example
As included zinc oxide (ZnO2), silicon oxide (SiO2), titanium oxide (TiO2), aluminium oxide (Al2O3) or a combination thereof.
Fig. 4 illustrates the white light of white light emitting device according to embodiments of the present invention in cie color coordinate diagram
Coordinate range.With reference to Fig. 4, by the first yellow fluorescent powder changed in the invention described above fluorescent material composition,
Second yellow fluorescent powder and the mixed proportion of red fluorescence powder, can obtain in chromaticity coordinate in the range from
CIE x:0.25-0.3 and the white light of CIE y:022-0.28, adjust white-light emitting dress by visual actual demand
The luminous characteristic put, it is achieved the white light of high-quality, therefore it is particularly suitable for the backlight such as TV or dynamic display
Demand.
Furthermore, in embodiment of the present invention fluorescent material forms, lanthanum silicon nitride fluorescent material (yellow) contained therein,
β-silicon aluminum oxygen nitrogen compound fluorescent material (yellow) and calcium aluminum silicon-nitrogen compound (red) are the most steady for the reaction of heat
Fixed, even if being in for a long time in high thermal environment produced by illuminating source, asking of brightness decay can't occur
Topic, is not easy to decompose because making moist, or the problem saturated just like known yttrium aluminium garnet fluorescent powder energy.
It is noted that for increasing the light emitting diode 101 launching efficiency for fluorescent material composition 111,
Fluorescent material composition 111 concentration can also by adhesive layer 109 surface gradually to light emitting diode 101 surface by
Cumulative add, or, can be covered on light emitting diode 101 by conformal fluorescent material composition 111 simultaneously,
And conformal fluorescent material composition 111 can by spraying, mold, the mode such as printing formed.Meanwhile, fluorescence
Powder composition 111 is not limited to need to directly be covered on light emitting diode 101, and fluorescent material composition 111 also can be borrowed
Excited by light emitting diode 101 by the mode away from light emitting diode 101, such as in display or in
In lighting module, fluorescent material composition 111 can form fluorescent material template or a light guide plate with mixed with resin,
Or the top of resin template or light guide plate can be coated, the most also can promote the light uniformity, increase glimmering
Light powder composition 111 is for the toleration of high temperature produced by light emitting diode 101.
In sum, the fluorescent material composition that the white light emitting device of the present invention is used does not has known fluorescent material heat
The problem that instability, moisture-sensitive and energy are saturated, it addition, by suitably changing the invention described above fluorescent material group
The ratio of each fluorescent material in one-tenth, is dynamically adapted the spectrum kenel (spectrum of the white light emitting device of the present invention
Pattern) to meet the demand of reality, the fluorescent material composition disclosed by white light emitting device the most of the present invention is permissible
Effectively replace existing yttrium aluminium garnet fluorescent powder or silicate fluorescent powder, therefore for supplying lighting source and showing
Show device light source, it is provided that the white light source of higher quality.
Although the present invention discloses as above with preferred embodiment, so it is not limited to the present invention, Ren Heben
Skilled person, without departing from the spirit and scope of the present invention, when making a little amendment and perfect,
Therefore protection scope of the present invention is when with being as the criterion that claims are defined.
Claims (14)
1. a white light emitting device, including:
One blue light-emitting diode, has emission wavelength range and contains 440-470nm；And
One fluorescent material composition at least includes three kinds of fluorescent material and is arranged on this blue light-emitting diode, wherein should
The emission wavelength peak value essence of three kinds of fluorescent material is different, and emission wavelength peak value circle of at least one fluorescent material is in it
Between the emission wavelength peak value of his two kinds of fluorescent material, and the half-wave width of two kinds of fluorescent material of at least a part of which is substantially identical,
Wherein the chromaticity coordinate scope of white light is CIE x:0.25-0.3 and CIE y:022-0.28.
2. white light emitting device as claimed in claim 1, it is characterised in that wherein this fluorescent material forms
Concentration is increased to this blue light-emitting diode surface by adhesive layer.
3. white light emitting device as claimed in claim 1, it is characterised in that wherein this fluorescent material forms
Light emitting region is from 480nm to 730nm.
4. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
One fluorescent material, the second fluorescent material and the 3rd fluorescent material, this first fluorescent material, the second fluorescent material and the 3rd
Fluorescent material at least includes a kind of Nitride phosphor.
5. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
One fluorescent material, the second fluorescent material and the 3rd fluorescent material, this first fluorescent material, the second fluorescent material and the 3rd
Fluorescent material is all Nitride phosphor.
6. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
One fluorescent material, the second fluorescent material and the 3rd fluorescent material, this first fluorescent material, the second fluorescent material and the 3rd are glimmering
Light powder percentage by weight be 1:1:0.3～0.45.
7. white light emitting device as claimed in claim 1, it is characterised in that the NTSC color of this white light
Saturation is more than 72%.
8. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
One fluorescent material, this first fluorescent material includes La3Si6N11:Ce3+。
9. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
Two fluorescent material, this second fluorescent material includes Si6-zAlzNzO8-z:Eu2+,0<z<4.2。
10. white light emitting device as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
Three fluorescent material, the 3rd fluorescent material includes CaAlSiN3:Eu2+。
11. white light emitting devices as claimed in claim 1, it is characterised in that this blue light-emitting diode has
There is peak luminous wavelength 450-460nm.
12. white light emitting devices as claimed in claim 1, it is characterised in that add in this fluorescent material forms
Add 5-15% (w/w) and size D50Diffusant (diffuser) for 1-10 μm.
13. white light emitting devices as claimed in claim 12, it is characterised in that this diffusant includes oxidation
Zinc (ZnO2), silicon oxide (SiO2), titanium oxide (TiO2), aluminium oxide (Al2O3) or a combination thereof.
14. white light emitting devices as claimed in claim 1, it is characterised in that this fluorescent material composition includes the
One fluorescent material and the second fluorescent material, the percentage by weight of this first fluorescent material and the second fluorescent material is substantially identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316871.3A CN105762257A (en) | 2011-08-02 | 2011-08-02 | Phosphor composition and white light emitting device composed of phosphor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316871.3A CN105762257A (en) | 2011-08-02 | 2011-08-02 | Phosphor composition and white light emitting device composed of phosphor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110218861.3A Division CN102916113B (en) | 2011-08-02 | 2011-08-02 | The white luminous device that fluorescent material forms and uses this fluorescent material to form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105762257A true CN105762257A (en) | 2016-07-13 |
Family
ID=56322946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610316871.3A Pending CN105762257A (en) | 2011-08-02 | 2011-08-02 | Phosphor composition and white light emitting device composed of phosphor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105762257A (en) |
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Application publication date: 20160713 |