CN101307865A - Light source device - Google Patents
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- CN101307865A CN101307865A CNA2008100369970A CN200810036997A CN101307865A CN 101307865 A CN101307865 A CN 101307865A CN A2008100369970 A CNA2008100369970 A CN A2008100369970A CN 200810036997 A CN200810036997 A CN 200810036997A CN 101307865 A CN101307865 A CN 101307865A
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Abstract
The invention discloses a light source device, comprising a luminescent device, a reflected light part, a light guide part, a diffusion part, photoluminescence parts and a fixed mechanism and so on. The luminescent device is arranged on one side of a reflector panel, the wavelength range of light emitted by the luminescent device is between 350 and 560 nm, the front of the luminescent device is provided with one or more than one photoluminescence part; red, green, blue, an intermediate color between the green and red and the intermediate color between the green and the blue are emitted by the photoluminescence parts under optical excitation of the luminescent device to be synthetized to white light. The light source of the photoluminescence parts adopts the luminescent device with monocolor or multicolor to obtain white light source having different color temperature and color-rendering indexes. Because the luminescent device with monocolor is configured and the electro-optical property is basically identical, thereby simplifying an electric control system and also avoiding the influence on illumination property due to different aging progresses generated by using the luminescent device with different colors.
Description
Technical field
The present invention relates to a kind of light supply apparatus and manufacture method of showing and throwing light on of being used to.
Background technology
Common planar light source device comprises optics and fixed mechanisms such as luminescent device, reflector, LGP, diffuser plate, condensing film.Luminescent device employing cold cathode (CCFL) or hot-cathode fluorescent lamp (HCFL), electrodeless florescent lamp, Organic Light Emitting Diode, inorganic light-emitting diode (LED), electroluminescent device, feds etc.
Common white light LEDs excites yellow fluorescent powder to obtain with blue-ray LED.This device normally is packaged together blue-light LED chip and gold-tinted fluorescent material and forms independently unit component.The white light that excites gold-tinted fluorescent material to obtain with blue-ray LED is also referred to as pseudo-white light, and its efficient is higher, but colour rendering index is lower.White light also can excite indigo plant, green, red fluorescence powder to obtain with ultraviolet or blue purple LED, and this device also is led chip and fluorescent material to be packaged together form independently unit component, and this white light colour rendering index is than higher, but efficient is lower.Another method is the LED die groupings of three kinds of different glow colors of red, green, blue (RGB) is lumped together and to obtain white light, and its advantage is that colour rendering is good, and shortcoming is that the LED decay of different colours is inconsistent, color drift, and luminous efficiency is lower, the cost height.
Summary of the invention
The purpose of this invention is to provide a kind of have light supply apparatus and manufacture method that be easy to realize, high efficiency, high color development area.
The objective of the invention is to be achieved through the following technical solutions:
A kind of light supply apparatus comprises luminescent device, reflection part, light guide member, proliferation part and fixed mechanism.The place ahead at the luminescent device of this light source is provided with more than one luminescence generated by light merit parts, the wave-length coverage of the light emitted line of this luminescent device arrives blueish green region in ultraviolet, and luminescence generated by light merit parts excite down at the light emitted line of above-mentioned luminescent device, launch to the intermediate color between red, green, blue and red, green, the blueness, be mixed into white light.
Wherein reflection part, light guide member, light diffusing member are to adopt multi-form functional part according to different occasions, and for example reflection part, light guide member, light diffusing member manufacture film or thin plate.
The wavelength peak scope of the light emitted line of this luminescent device is 350-560nm.
Be partially transparent at 350-560nm in this photoluminescent film.
This light source be quiescent operation or control by signal.
This luminescent device is cold-cathode fluorescence lamp or hot-cathode fluorescent lamp, flat florescent lamp, glow discharge spot lamp, electroluminescent device, one or more inorganic light-emitting diode, Organic Light Emitting Diode or field emission light source.And this luminescent device can be spot light, line source or area source.
LED source can adopt forms such as surface encapsulation, COB (Chip on Board) encapsulation.When adopting the COB encapsulation, its substrate (board) is shaped on reflective optical texture.
During a plurality of series and parallel such as LED source, can exchange with 100-380V and drive, can utilize self rectification characteristic of light emitting diode this moment, also can pass through the bridge rectifier rear drive.
This luminescent device is illuminated or be called straight-down negative under LGP for the side that can be positioned at LGP is called side.
These luminescence generated by light parts are made of luminescence generated by light functional membrane and substrate, and method film forming such as this luminescence generated by light functional membrane physical vapor, chemical gaseous phase, Sol-Gel, coating, printing, injection moulding are on substrate.
This luminescence generated by light functional membrane is made by inorganic material, organic material or organic/inorganic composite material and complementary functional material, and the photoluminescence quantum efficiencies of this luminescent film is greater than 30%.
This luminescence generated by light functional membrane can further be made into and comprise pixel graphics (pattern), uses mask, photoetching, heat and laser transfer, laser lift-off, the preparation of methods such as printing, wherein printing process can be contact or contactless as inkjet printing or other known methods.
Positive progressive effect of the present invention is:
1, in the device of the present invention, adopted monochromatic source, the luminescent device photoelectric characteristic of configuration is identical, has avoided employing different color luminescent device asynchronous because of ager process, and to the influence of color developing.
2, in the display unit of the present invention, use the luminescence generated by light functional membrane that monochromatic source is converted to white light source, regulate colour temperature by the component of regulating photoluminescent film.
3, in the display unit of the present invention, luminescent device and photoluminescent film are prepared into discrete unit component, make luminescent device be easier to heat radiation, simplify the optical design of luminescent device.
Description of drawings
Fig. 1 is the structural representation of the photometry formula device of invention.310 luminescent devices, 312 LGPs, 313 reflecting plates, 314 luminescence generated by light parts, 315 diffuser plates.
Fig. 2 is the structural representation of straight-down negative device of the present invention.310 luminescent devices, 313 reflecting plates, 314 luminescence generated by light parts, 315 diffuser plates.
Fig. 3 is the embodiment one blue-light excited white-light spectrum figure that contains green and the acquisition of red illuminating material photoluminescent film.
Fig. 4 is the embodiment two blue-light excited white-light spectrum figure that contain Yellow luminous material photoluminescent film acquisition.
The specific embodiment
Accompanying drawings technical scheme of the present invention.。
Light supply apparatus as depicted in figs. 1 and 2, it includes: active illuminating device 310, LGP 312, reflecting plate (film) 313, diffuser plate (film) 314, solar panel (film) 315, photoluminescent sheet (film) 316, fixed mechanism etc.
The wave-length coverage of the light that this luminescent device 310 is launched is at ultraviolet or blueish green region, with 350-550nm is best, and this photoluminescent film 316 can issue the intermediate color that is emitted as between redness, green, blueness and redness, green, the blueness exciting of above-mentioned luminescent device 310.
This light source can use the side-light type described in the background technology, straight-down negative to be provided with, and its structure can be identical with Fig. 1,2 shown devices.
Use CCFL and HCFL light source or electrodeless florescent lamp.Adopt single fluorescent tube, two fluorescent tube or many fluorescent tubes, tube diameter is the 1.8-10mm scope, and length is decided according to mechanism size.Realizing on the ultraviolet light emission ultraviolet ray (need filter visible light) that can directly utilize Hg among CCFL and the HCFL and inert gas etc. to send; The ultraviolet light (350-400nm) of ultraviolet ray fluorescent material (as CaWO4:Bi) conversion in light of sending by gas etc.; The blue light (peak value 400-500nm) of ultraviolet ray fluorescent material conversion in light of sending by gas etc.
Ultraviolet, blue-green LED by ZnO, SiC, ZnS, ZnSe, Ga (In, Al) known semiconductor material such as N is made; The preferred LED that makes of (Al) Ga (In) N.Light emitting source adopts the LED tube core to be fixed on (PCB, MCPCB, FPCB etc.) on heat conduction, the insulated substrate, and periphery is equipped with control circuit and power supply.LED tube core general size is 0.3-1mm, and single tube power is 0.001-10W, and typical power is 10mW-1W.Adopt the encapsulation of single tube or multitube, organize the LED series connection more and mix with in parallel, surface mount (SMT) or COB mode encapsulate.When adopting the COB mode to encapsulate, on substrate, made the optical reflection structure.Concrete steps are side (side-light type) or the diffuser plate downsides (straight-down negative) that LED lamp bar (Light Bar) (LED is installed in the device on PCB, MCPCB, the FPCB etc.) are fixed on LGP, determine to use the number of LED according to the requirement of brightness.Side is illuminated sees Fig. 1, and straight-down negative is seen Fig. 2.For side-light type, LED lamp bar is installed in the LGP side, and diffusion barrier, condensing film, polarisation reflectance coating are installed in the LGP top, the reflecting plate of LGP below; LED drives with straight, AC power.When exchange driving, can realize, also can drive with common bridge rectifier with self rectification characteristic of light emitting diode.
In addition, light source can not need LGP for flat florescent lamp (FFL) yet.The FFL light source is fixed on diffuser plate downside (straight-down negative), and there are diffusion barrier, condensing film, polarisation reflectance coating, fixed mechanism etc. in the light source top.
Use inorganic EL (EL) light source, comprise powder, film, the inorganic EL of thick film.Inorganic EL is an area source, does not need LGP, adopts straight-down negative.Inorganic EL thickness is the 1-10mm scope, and the length and width degree is decided according to mechanism size, drives with exchanging usually.EL light source top is installed diffusion barrier, condensing film, polarisation reflectance coating etc. usually.
Make use emission (FED), surface field emission (SED) light source.FED/SED is an area source, does not need LGP, adopts straight-down negative.FED/SED thickness is the 1mm-50mm scope, and the length and width degree is decided according to panel size.FED light source top is diffusion barrier, condensing film, polarisation reflectance coating etc.
Use Organic Light Emitting Diode (OLED) light source.OLED is an area source, does not need LGP, adopts straight-down negative.OLED thickness is 0.1-10mm, and the length and width degree is decided according to panel size.OLED can organize series connection more and mix with in parallel, and OLED drives with AC and DC usually.Top, oled light source is the mechanism in diffusion barrier, condensing film, polarisation reflectance coating, the outside etc.
The characteristics of photoluminescent film be this as passive illuminator, under peak value 350-400nm ultraviolet or 400-550nm blue-green monochrome or polychromatic light excite, send visible light (380-780nm).The ultraviolet that has a peak and light source at least or the blue-green overlap of peaks that excite (excitation) spectrum of luminescent material, the conversion quantum efficiency is greater than 50%.Luminescent material is made by organic and inorganic, organic and inorganic mixture and miscellaneous function material.
Phosphor:
Blue phosphor comprises:
Aluminate rare earth luminescent material, its general formula be (Me1) (alkaline-earth metal 1 is as Ba, Sr) (Me2) 2 (alkaline-earth metal 2 is as Mg) AlxOy (x=16, y=27)/Eu; (Me) (alkaline-earth metal such as Ba, Sr, Ca, Mg) AlxOy (x=2, y=4)/Eu; Silicate rare earth luminescent material, its general formula be (Me1) (alkaline-earth metal 1 is as Ba, Sr, Ca) (Me2) (alkaline-earth metal 2 is as Mg, Al) SixOy (x=2, y=6)/Eu; Y2SiO5/Ce; Phosphate rare earth luminescent material, its general formula are (Sr, Ca, Ba) 10 (PO4) 6Cl2/Eu; (Sr, Ca, Ba) 10 (PO4) 6Cl2B2O3/Eu; 3 (Sr, Ca, Ba) 3 (PO4) 2/Eu; LaPO4/Eu; Sulfide luminescent material, its general formula be (Zn, Ca, Sr) S (Se, O)/Ag (Ce, Tm, Eu), Ba (Mg) Al2S4/Eu etc.
Green phosphor comprises:
Aluminate rare earth luminescent material, its general formula be Me (alkaline-earth metal such as Mg) AlxOy (x=11, y=19)/Ce, Tb; Me (alkaline-earth metal such as Sr, Ba) AlxOy (as x=2, y=4)/Eu, Dy; Me1 (alkaline-earth metal 1 is as Ba, Sr, Ca) Me2 (alkaline-earth metal 2 is as Mg) AlxOy (x=10, y=17)/Eu, Mn; Silicate luminescent material, its general formula be (Me1) (alkaline-earth metal 1 is as Ba, Sr, Ca) 2 (Me2) (alkaline-earth metal 2 is as Mg, Al) 2SixOy (x=2, y=8)/Eu; Zn2SiO4/Mn; Y2SiO5/Tb; Phosphate rare earth luminescent material, its general formula are La2O30.2SiO20.9P2O5/Ce, Tb; LaPO4/Ce, Tb; Sulfide luminescent material, its general formula be Zn (Ca, Sr) S/Cu (Ce, Tb); SrGa2S4/Eu, CaAl2S4/Eu; Green-yellow light material Y3Al5O12/Ce, ZnS/Mn etc.
Red phosphor comprises:
Oxygen (sulphur) is changed thing, and general formula is: Y (Gd) 2O3/Eu, Y2O2S/Eu, Sr (Ca, Zn) S/Eu (Sm); Ca (Sr) Y2S4/Eu, MgGa2O4Eu, the aluminate rare earth luminescent material, its general formula is: Me1 (alkaline-earth metal 1 is as Sr) Me2 (alkaline-earth metal 2 is as Ba) AlxOy/Eu, Mn etc.
The red, green, blue luminescent material can mix auxiliary energy transmission material such as green luminescent material mixes a certain amount of blue light emitting material, Yellow luminous material mixes a certain amount of green light luminescent material, red illuminating material mixes a certain amount of green or Yellow luminous material etc., is used for improving energy conversion efficiency.
Phosphor can be distributed to, apply, deposit to auxiliary filmogen such as glass, polyethylene, polyvinyl chloride, polypropylene, polyacrylate, polymethyl methacrylate, polyvinyl alcohol, polystyrene, Merlon, phenolic resins, alkyd resins, epoxy resin, polyurethane resin or other known, on the saturating macromolecular material of visible light.Can also add simultaneously other miscellaneous function materials such as photosensitive material, cross-linked material, dispersion, solvent etc.
Luminescent material is when mixing use with non-luminescent material, and in order to prevent the quencher of luminescent material, the surface of luminescent material need be shifted to prevent the energy of luminescent material when exciting with covering layer of transparent organic or inorganic insulating materials.
The organic low molecular luminescent material:
Blue organic low molecular luminescent material comprises:
Cumarin 4 (coumarin4); Anthracene anthracene and derivative diphenylanthracene (DPA) thereof; 9,10-di-2-naphthylanthracene (AND) ， perylene (perylene) and derivative tetra (t-butyl) thereof-perylene (TBP); Pyrene and derivative thereof such as tetra (phenyl)-pyrene (TPP), distyrylarylene (DSA) and derivative (DSA-Ph) thereof; Fluorenes (fluorene) and derivative such as DBSF, stilbene and derivative thereof; TPD (triphenyldiamine); N, N '-diphenyl-N, N '-bis (1-naphthyl)-(1,1 '-biphenyl)-4,4 '-diamine (NPB); 4,4 '-N, N-dicarbazole-biphenyl (CBP); Oxazole derivatives (2-(4-biphenyl)-5-(4-tert-butyl)-1.3.4-ozadiazole) (PBD), 3-phenyl-4-(8-naphthyl)-5-phenyl-1,2,4-triazole (TAZ); Silole and derivative 2 thereof, 5-diarylsiloes; Dithienosiles; Aluminum metal complex B Alq; Iridium metal complex ridium (III) bis[(4 ,-6difluorophenyl)-and pyridinato-N, C] picolinate (FIrpic) etc.
Green organic low molecular luminescent material comprises:
Cumarin Coumarin series derivates such as 3-(2-benzothiazolyl-tetrahydro)-7-(diethylamino)-2H-1-benzopyran-2-one (C6), C7, C545MT; The quinoxaline derivative (6-N, N-dimethylamino-1-methyl-3-phenyl-1-H-Pyrazolo[3,4-b]-quinoline (PAQ-Net2), quinacridone quinacridone series derivates such as dimethyl-quinaridone (DMQA); Naphthacene and derivative DPT (diphenyltetracene) thereof, fluorene derivative, Al metal complex tris (8-hydroxy-quinoline)-aluminum (Alq), Mg metal complex Mgq, Zn metal complex ZnPBO, ZnPBT, Tb metal complex Tb (acac)
3Phen, iridium metal complex tris (2-phenylpyridine) iridium i.e. (Ir (ppy)
3(2-phenylpyridine) iridium (III) acetylacetonate is (ppy)
3Ir (acac) etc.
Yellow organic low molecular luminescent material comprises:
Naphthacene derivative rubrene, three fragrant ammonia derivative DCTP, phenoxazine ketone (BTX), bis (8-hydroxy-quinoline)-zinc (Znq), Rohdamine B, Rohdamine 6G etc.
Red organic low molecular luminescent material comprises:
Pyrans series derivates (4-(dicyano methylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) (DCM2); DCJTB; Three fragrant ammonia derivatives 1,1 '-dicyano-substituted bis-styry-naphthalene (BSN); NPAFN; Pentacene derivative diphenylpentacence (DPP); Rohdamine B, rohdamine6G, Eu metal complex Eu (DBM)
3Bath, Eu (acac)
3Phen; Iridium metal complex bis (2-(2 '-benzo[4,5-a] thienyl) pyridinato-N, C) iridium (acetylacetonate) is Btp
2Ir (acac) etc.
For the better energy transmission is an auxiliary dopant with preventing that concentration quenching, luminescent material from can mix use.Can mix auxiliary dopant TPD as blue light material DSA-Ph; Green light material C6 can mix DMQD, and red light material DCM2 can mix green glow C6 and gold-tinted adulterant such as rubrene etc.
Can join non-gripping altogether on high molecular main chain or the side chain to above-listed luminescent organic molecule by chemical synthesis as polypropylene, polyacrylate, polyvinyl alcohol, polyimides, polymethyl methacrylate, polystyrene, poly-carbonic acid, poly-silicones is on poly-silica resin or other known polymeric mains, the side chain.
The organic molecule luminescent material also can dissolve, be distributed to auxiliary filmogen such as polypropylene, polyacrylate, polymethyl methacrylate, polyvinyl alcohol, polyimides, polystyrene, Merlon, phenolic resins, alkyd resins, epoxy resin, polyurethane resin or other known macromolecular materials.Can also add simultaneously other miscellaneous function materials such as photosensitive material, cross-linked material, dispersion, solvent etc.
The organic macromolecular LED material:
Light emitting-type is gripped macromolecular material altogether and is comprised polyphenyl PPP and derivative thereof, poly-fluorenes PF and derivative thereof, poly-to styrene support PPV and derivative P-PPV thereof, OR-PPV, MEH-PPV, CN-PPV etc., polyacetylene derivative PDPA, PHPA etc., polythiophene (PT) and derivative thereof, polypyridine PPY and derivative thereof, polyvinylpyridine PVY and derivative thereof etc., the copolymer of above polymer, as the copolymer (TFB) of poly-fluorenes and three fragrant ammonia, the copolymer (F8BT) of poly-fluorenes and benzene sulphur diazole, the copolymer (F8T2) of poly-fluorenes and thiophene phenol; The copolymer of benzene sulphur diazole and thiophene phenol, the dendritic of above material (dendrimer), oligomer (oligomer) be film forming directly.
Light emitting-type is gripped macromolecule altogether and also can be added auxiliary type polymer (oligomer) and comprise polypropylene, polyacrylate, polymethyl methacrylate, polyvinyl alcohol, polyimides, polystyrene, Merlon, phenolic resins, alkyd resins, epoxy resin, polyurethane resin or other known macromolecular materials.Can also add simultaneously miscellaneous function material such as photosensitive material, auxiliary light emission material, cross-linked material, dispersion, solvent etc.Can add light and thermal polymerization sexual function group to grip altogether on light emitting-type high polymer main chain or the side chain by chemical synthesis makes photosensitive and temperature-sensitive material.
The luminescent material that satisfies requirement of the present invention excites down at 350-550nm ultraviolet, blue green light, the peak value of blue light emitting is at 400-500nm, the peak value of green luminescence is at 500-550nm, the peak value of red light-emitting is at 600-700nm, more than 50%, preferred value is more than 90% to luminescent material in the photoluminescence quantum efficiencies of excitation light wave strong point.The photoluminescent film thickness range is at 0.1 micron-30mm, and typical thickness is 0.3mm.Luminescent material has good thermostable type, air-stable type, excellent dissolution in macromolecule or dispersing characteristic etc.Auxiliary film forming macromolecular material is at visible region transparent (transmitance is more than 30%), and preferred value is more than 70%.
Luminescent material adopts directly film forming on substrate of physical vapor deposition (PVD), chemical vapor deposition (CVD), Sol-Gel method, coating, printing.Be made into figure with methods such as mask, photoetching, laser lift-off, printing, transfer printing, inkjet printings.
Other film build method is that luminescent material is disperseed, is dissolved in the transparent macromolecular material, and more than 70%, preferred value is more than 90% in the 350-780nm transmitance for suitable main body macromolecular material.The phosphor particles diameter that is fit to is the 0.01-10 micron, and the diameter of optimization is 0.1 micron.The proportion of the adding of luminescent material is 0.1-99wt%, and preferred concentration range for is 1-20wt%.Available macromolecular material has polyethylene, polyvinyl chloride, polypropylene, polyacrylic acid, polypropylene cyanogen, PMA, polymethyl methacrylate, poly-epoxy acrylic, polyurethane acryloyl, polyester acrylate, polybutene, polyvinyl alcohol, polyvinylpyrrolidone, polystyrene, polyvinyl acetate, Merlon, polyurethane, polyimides, phenolic resins, epoxy resin, poly-silicones, poly-silica resin, polysulfones, polyphenylene oxide, polyether-ketone, acetate fiber, nitrocellulose etc., above mixture of polymers, copolymer, oligomer etc.
The film forming macromolecular material also needs to add miscellaneous function material such as polymer monomer (monomer), oligomer (oligomer), polymerization atarting material, cross-linked material, dispersion, coupling material, solvent etc.Polymerization atarting material such as 1-hydroxyl-cyclobenzene base ketone (HCPK); 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone (HMPP) etc.Dispersion such as polyoxyethylene alkyl phenyl ether, polyvinyl alcohol diester etc.Coupling material such as organic silane etc.Solvent comprises that aromatic hydrocarbon is like toluene, dimethylbenzene; Alcohols such as ethanol, isopropyl alcohol; Ketone such as acetone, cyclohexanone; Ester class such as ethyl acetate, butyl acetate, water etc.
The transmitance of material (luminescent material, macromolecular material, complementary material) in visible-range that forms is greater than 30%.The luminescent film thickness range is at 0.1 micron-30mm, and typical thickness is 0.3-30mm.
Directly be that luminescent material is scattered in the transparent photoresist, as the acrylic resin of optical polymerism, the polyvinyl alcohol of photocrosslinking reaction etc.The photo-polymerization type acrylic resin contains Photoepolymerizationinitiater initiater, acrylic monomers and oligomer, other polymer of adjustment film forming character and solvent etc.To the transparent photoresist that the is mixed with phosphor steps such as (UV), curing that apply respectively, expose, the preparation light-emitting film.The thin film physics characteristic depends on the selection and the incorporation of luminescent material, the particle size of material and surface treatment, process for dispersing etc.
Print process is the polyvinyl chloride that luminescent material is dispersed in visible transparent, melmac, phenolic resins, alkyd resins, epoxy resin, polyurethane resin, mylar, maleic acid resin, polymethyl methacrylate, polyacrylate, Merlon, polyvinyl alcohol, polyvinylpyrrolidone, hydroxyethylcellulose, resin such as carboxymethyl cellulose and other functional auxiliary material etc. are made printing ink.
Embodiment one
Light supply apparatus in the present embodiment can adopt any one structure shown in Fig. 1 or 2, has used blue CCFL or led light source 310, is provided with photoluminescent film 316.
The preparation green luminescent material is chosen to be (MDQD) series derivates of cumarin (C6) or dimethyl quinacridine (dimetheylquinacrodone), or two kinds, the mixture of two or more luminescent materials, and filmogen is acrylic acid or poly-carbonic acid resinoid.Cumarin (C6) is 0.1-30% with third resin (solid constituent) weight ratio.
Red luminescent material selected DCM2 (4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) or DPP (diphenylpentacence), also can mix (MDQD) series derivates of green luminescent material such as cumarin (C6) or dimethyl quinacridine (dimetheylquinacrodone), Yellow luminous material waits and improves blue light-ruddiness conversion efficiency.Filmogen is acrylic acid or poly-carbonic acid resinoid.Luminescent material such as DCM2 etc. are 0.1-30% with resin (solid constituent) weight ratio.
Below its operation principle is described, the blue light that light source 310 sends passes through LGP.Photoluminescent film is made with green luminescent material and water white resin by red, and blue light (as 20%) the part transmission that enters photoluminescent film is gone out; Green luminescent material in the photoluminescent film partially absorbs (as 50%) blue light, send green glow (500-570nm), the light of outgoing depends on quantity and the luminous efficiency with luminescent material, for example adopts that 6 efficient of C are about 80%, so absorbed blue light is converted to green glow; Red illuminating material in the photoluminescent film partially absorbs blue light (as 30%), sends ruddiness (570-700nm), for example adopts that DCM2 efficient is about 80%, so the absorbed blue light of part is converted to orange red light.Realize being easy to adjust colour temperature and white plane light source by above technology with high color rendering index (CRI).Can be used for general illumination and FPD such as liquid crystal backlight.
What Fig. 3 showed is to excite C6 to be converted to green glow (peak value 530nm) with blue-ray LED (460nm) in the embodiment of the invention one, excite DCM2 to be converted to the white-light spectrum figure that ruddiness (peak value 610nm) obtains, the technical scheme of presentation of results present embodiment can realize.
Embodiment two
Light supply apparatus in the present embodiment can adopt any one structure shown in Fig. 1 or 2, has used blue CCFL or led light source 310, is provided with photoluminescent film 316.
Prepare the selected P-PPV of green high-molecular luminous material, PF8T or derivatives thereof, or two kinds, the mixture of two or more luminescent materials, filmogen is acrylic acid or poly-carbonic acid resinoid.With resin (solid constituent) weight ratio be 1-99%.
Selected MEH of red high-molecular luminous material or CN-PPV, or PFT (the copolymerization fluorenes of polythiophene and poly-fluorenes) and derivative thereof, also can Yellow luminous material such as PPV wait and improve blue light-ruddiness conversion efficiency.Filmogen is acrylic acid or poly-carbonic acid resinoid.Luminescent material and resin (solid constituent) weight ratio is 1-99%.
Embodiment three
The apparatus structure of present embodiment such as Fig. 1 or 2, identical with embodiment one, two with principle, difference is:
The preparation green luminescent material selects ZnS/Cu or SrGa2O4/Eu phosphor, or two kinds, the mixture of two or more luminescent materials, and weight ratio is 1-99% (to the acrylic resin solid constituent).
The preparation red illuminating material selects Y2O2S/Eu or SrS/Eu phosphor, or two kinds, the mixture of two or more luminescent materials, and weight ratio is 1-99% (to the resin solid composition).
Embodiment four
The apparatus structure of present embodiment is identical with embodiment one to three shown in Fig. 1 or 2, and difference is:
Light source has adopted ultraviolet CCFL or led light source;
Blue emitting material is chosen to be anthracene (anthracene), TPD (triphenyldiamine), poly-fluorenes, polyphenyl luminous organic materials such as (or derivatives thereofs), or BaMg2Al6O27/Eu, (Ca, Sr) 10 (PO4) 6Cl2/Eu phosphor, or the mixture of two class luminescent materials.Red, green luminescent material is identical with embodiment one to three.
Its principle is sent blue light (400-500nm) for the photoluminescent film blue emitting material absorbs purple light, the light of outgoing depends on and luminescent material quantity and photoluminescence efficiency, the photoluminescent film green luminescent material absorbs blue light and sends green glow (500-570nm), and the green glow of outgoing depends on quantity and the photoluminescence efficiency with luminescent material; The photoluminescent film red illuminating material absorbs blue light, sends ruddiness (600-700nm), and the ruddiness of outgoing depends on the quantity photoluminescence efficiency with luminescent material.Realize white light by above technology.Owing to adopted burst of ultraviolel, expanded the luminescent material range of choice, expanded the colour gamut of display, realized comprising dark blue, indigo plant, green, yellowish green, Huang, magenta, the height colour developing white light of red primary.
Embodiment five
The apparatus structure of present embodiment is identical with embodiment one to four shown in Fig. 1 or 2, and difference is: use organic material Rubrene, PPV or the Yellow luminous material of inorganic material Y3Al5O12:Ce.Operation principle: light source sends blue light and enters photoluminescent film, and photoluminescent film is made by Yellow luminous material and water white resin, and blue light partly sees through photoluminescent film and goes out; The Yellow luminous material of photoluminescent film partially absorbs blue light and sends gold-tinted (550-580nm), and the gold-tinted of outgoing depends on quantity and the photoluminescence efficiency with luminescent material, and blue light forms white light with mixing of gold-tinted.Fig. 5 is the white-light spectrum figure that blue-ray LED excites the photoluminescent film that contains Yellow light emitting material Rubrene to obtain, and the result shows that motion of the present invention is feasible technically.
Embodiment six
The apparatus structure of present embodiment is identical with embodiment one to five, and difference is: except that having used organic material Rubrene or inorganic material Y3Al5O12:Ce as the Yellow luminous material, also increased green, red luminescent material.By above technology, realized high colour developing white light.
Embodiment seven
The apparatus structure of present embodiment is identical with embodiment one to six, difference is: it is inorganic blue and organic blue light that luminescent material has used luminous organic material, inorganic organic complex system, inorganic green glow mixes with organic green light, and is inorganic red or yellow or mix use with organic red or Yellow light emitting material.
Embodiment eight
Device is with embodiment one to seven, and difference is that luminescent device 310 is area source such as FFL (flat florescent lamp), EL (electroluminescent), FED (emission), OLED (organic light emission) etc., and this device does not need LGP and reflecting plate.
Embodiment nine:
Device is with embodiment one to eight, and difference is that the direct film forming of method such as luminescent material physical vapor, chemical gaseous phase, coating, printing are on substrate.
Claims (7)
1, a kind of light supply apparatus comprises luminescent device, reflection part, light guide member, light diffusing member and fixed mechanism, it is characterized in that, luminescent device is arranged on reflection part one side, and one or more luminescence generated by light parts are set in luminescent device the place ahead; The wavelength peak scope of the light that this luminescent device is launched is 350-560nm; The luminescence generated by light parts excite the intermediate color of launching down between redness, green, blueness and red green intermediate color, the green blueness at above-mentioned luminescent device, form white light.
2, luminescent device as claimed in claim 1 is characterized in that, this light source is quiescent operation or can controls by signal.
3, the luminescent device described in claim 1 is characterized in that luminescent device is one or more cold-cathode fluorescence lamp or hot-cathode fluorescent lamp, electrodeless glow discharge spot lamp, inorganic light-emitting diode, Organic Light Emitting Diode, electroluminescent device and field emission light source.
4, luminescent device as claimed in claim 1 is characterized in that luminescent device is the illuminated or straight-down negative of side.
5, luminescence generated by light parts as claimed in claim 1, it is characterized in that these luminescence generated by light parts are made of luminescence generated by light functional membrane and substrate, make by inorganic material, organic material or organic/inorganic composite material by the luminescence generated by light functional membrane, the photoluminescence quantum efficiencies of this photoluminescent film is greater than 30%, and substrate is made by glass or resin material.
6, luminescence generated by light functional membrane as claimed in claim 5 is characterized in that this luminescence generated by light functional membrane can use method film forming such as physical vapor, chemical gaseous phase, coating method, printing, injection moulding.
7, luminescence generated by light functional membrane as claimed in claim 5 is characterized in that this luminescence generated by light functional membrane is a partially transparent in the blue excitation light district.
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| CNA2008100369970A CN101307865A (en) | 2008-05-06 | 2008-05-06 | Light source device |
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| CNA2008100369970A CN101307865A (en) | 2008-05-06 | 2008-05-06 | Light source device |
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| CN101307865A true CN101307865A (en) | 2008-11-19 |
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Effective date of registration: 20090515 Address after: Science and Education City, 801 middle Wu Road, Changzhou Applicant after: Bex Technologies (Jiangsu) Co., Ltd. Address before: Room 23, building 475, Lane 102, Tacheng Road, Jiading District, Shanghai Applicant before: Sun Runguang |
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Application publication date: 20081119 |