CN101881420A - LED light source using fluorescence conversion device with transparent base material - Google Patents
LED light source using fluorescence conversion device with transparent base material Download PDFInfo
- Publication number
- CN101881420A CN101881420A CN2009102653069A CN200910265306A CN101881420A CN 101881420 A CN101881420 A CN 101881420A CN 2009102653069 A CN2009102653069 A CN 2009102653069A CN 200910265306 A CN200910265306 A CN 200910265306A CN 101881420 A CN101881420 A CN 101881420A
- Authority
- CN
- China
- Prior art keywords
- light
- led
- fluorescent material
- conversion device
- transparent base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Led Device Packages (AREA)
Abstract
This invention provides an LED light source using a fluorescence conversion device with a transparent base material. The LED light source comprises an LED device and a fluorescence conversion device, wherein the LED device has at least one LED chip; the fluorescence conversion device is arranged on the LED device and has the transparent base material; light emitted from the LED chip is mixed to form white light by using the fluorescence conversion device and emitted to the outside; and the fluorescence conversion device can be arranged on the LED device during package of the LED device and secondary package of the LED device, or a plurality of LED devices share a fluorescence conversion device. The fluorescence conversion device with the transparent base material is formed by coating a fluorescent powder film on the transparent base material shaped from any one material of ARTON, COC, COP, PMMA and optical glass; and the fluorescent powder film on the fluorescence conversion device is excited by a blue ray or an ultraviolet chip to produce visible light of other wave bands, and colors of various sections are mixed to form the white light. The invention further provides the fluorescence conversion device with the ARTON transparent base material and a preparation method thereof.
Description
Technical field
The invention belongs to the LED lighting technical field, especially the coating method of LED fluorescent material.Be specifically related to the sputter coating technology.
Technical background
Along with the appearance of ultra-bright LED, its efficient is more and more higher, and price descends gradually.Simultaneously LED have life-span length, vibration resistance, luminous efficiency height, noiseless, be not afraid of characteristics such as low temperature, no mercury pollution problem and cost performance height, big potentiality commodity of the alternative traditional lighting utensil of being had an optimistic view of by semicon industry.Ultra-high brightness LED has been expanded LED greatly and has been shown and the lighting source Application for Field at various signals, as lamp, various traffic lights inside and outside the automobile, indoor and outdoor information display screen and backlight.The LED product is used for illumination, will provides more wide application space for LED.
A kind of traditional approach that forms white light LEDs is that blue light or ultraviolet chip excite the fluorescent material that covers above the chip, and the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.
Excite the led chip that forms white light to make synthetic by III-V compound semiconductor GaN material by fluorescent material.The backing material that wherein is used for the GaN chip has A1
2O
3And SiC, chip can send the light of blue light, ultraviolet light or other short-wave band.
The fluorescent material that is used to form white light LEDs generally has YAG fluorescent material (be used for blue chip and excite YAG fluorescent material) and RGB fluorescent material (be used for the ultraviolet chip and excite RGB fluorescent material).Wherein adopt YAG fluorescent material to excite the mode that forms white light the most general.
Typical White-light LED package structure: for the small-power white light LEDs, led chip is placed in the reflector in the support, and support had not only used as the carrier of reflector but also as electrode and electrode pin, and the passage of chip heat diffusion also is provided simultaneously.Chip is positioned over the central authorities of reflector, the difference that is provided with according to chip electrode, and coat elargol or insulating cement (for the unipolar chip in top in bowl cup bottom, the bottom is coated with the elargol of conduction, and for the chip of top bipolar electrode, the bottom is coated with insulating cement), they not only can stick and fixed chip but also can realize good Ohmic contact between chip and electrode; The electrode of chip links to each other with another electrode of support by metal wire welding, thick yttrium-aluminium-garnet (YAG) the yellow fluorescence bisque of the about 100um of coating on GaN blue-light-emitting chip, entire bracket and chip epoxy sealing sealing-in at last, the centre gas of not leaving a blank.Blue light that chip sends and fluorescent material effect fully and excitated fluorescent powder sends gold-tinted makes gold-tinted mix the formation white light mutually with the sodium yellow that appears from phosphor powder layer again.And aspect fluorescent powder coated technique, cause photochromic inequality owing to technology is uncontrollable by directly filling the conventional fluorescent powder application pattern that the cup bowl covers chip, and the generation of the fluorescent powder coated mode of directly filling cup bowl local heat owing to exciting makes the reduction of fluorescent material transformation efficiency.Used fluorescent material territory far away and excite in US5962971A, US5959316A, US6294800 a series of patents such as (B1) and document, the Lumileds of LED production firm, companies such as Osram, HP have all proposed the territory far away of fluorescent material separately excitation scheme.It is that a segment distance is arranged between fluorescent material and the chip that fluorescent material territory far away excites, and fluorescent material does not directly contact with chip, the performance that the fluorescent powder coated mode in this far field helps improving light extraction efficiency and improves white light LED part.But, adopt traditional application pattern of the accent fluorescent material of resin or silica gel on consumption, accurately to control difficulty, make that the photochromic difference of making in batch of LED is bigger, controllable color is relatively poor.
Summary of the invention
The invention provides the led light source that a kind of use has the fluorescence conversion device of transparent base.
As shown in Figure 1, the present invention uses the led light source of the fluorescence conversion device with transparent base, comprise LED device 1 with at least one led chip 11, and be installed in the fluorescence conversion device with transparent base 2 on the LED device, wherein the light that sends of led chip is mixed into white light through fluorescence conversion device and is transmitted into the outside; Fluorescence conversion device can just add when packaged LED device 1, also can install when the LED device being carried out the secondary encapsulation, or a plurality of LED device uses a fluorescence conversion device jointly.
The LED device can be monochrome or polychrome, and monochrome is the led chip of a certain emission wavelength of encapsulation in the LED device, makes its light that sends a kind of color, has a led chip in the LED device at least; Polychrome then is that led chip mutual encapsulation with multiple different emission is in a LED device, as the mutual encapsulation of red, blue, green three color chip mutual encapsulation or other color chip portfolio.
Fluorescence conversion device with transparent base is that the transparent base by moulding carries out the fluorescent material plated film and forms; During led light source work, by blue light or the fluorescent powder film layer above the ultraviolet chip fluorescence excitation conversion equipment, the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.
The present invention also provides a kind of fluorescence conversion device with transparent base and preparation method thereof.
Fluorescence conversion device with transparent base carries out plated film by the transparent base of moulding, comprises the lens of the arbitrary surface of moulding, perhaps diaphragm arbitrarily, perhaps arbitrarily the solid geometry shape as transparent base; It is characterized in that: by the transparent base surface plating fluorescent powder film layer of moulding.
Described fluorescent powder film layer forms for the fluorescent material plated film.Fluorescent material comprises following any or following any several combinations:
1) aluminate serial fluorescent material includes but not limited to:
YAG fluorescent material, contain the YAG fluorescent material of alloy, can be used for white light LEDs, wavelength-tunable, exciting light is green, yellow green, yellow or orange fluorescent powder.
2) silicate series fluorescent material includes but not limited to:
Contain rare earth, silicon, alkaline-earth metal, halogen, oxygen, and the silicate fluorescent powder of aluminium or gallium, under blue light, purple light or ultraviolet excitation, send peak value at the broadband of 500～600nm visible light, half-peak breadth is greater than 30nm;
The fluorescent material that forms by multiple element combinations such as alkaline-earth metal, rare earth, transition metal, halogens, can be used as the light-emitting component of the emission spectrum of excitation source in ultraviolet-green glow zone of 240～510nm excites, send the emission spectrum of peak value in 430～630 scopes, can present the light of indigo plant, bluish-green, green, yellowish green, yellow, Huang Hong, red, white colour;
Europkium-activated alkaline-earth metal phosphosilicate fluorescent material, emission wavelength ranges is at the bluish-green yellow orange light that arrives;
Be suitable for the yellow fluorescent powder that 220～530nm excites; With the orange colour silicate fluorescent powder of wavelength greater than 565nm.
3) nitride/nitrous oxides series fluorescent material includes but not limited to:
Be suitable for by the led chip excited fluorescent powder of 420～470nm, produce the emission of gold-tinted-ruddiness;
Can be obtained the wide range emission of 520～780nm by the effective excited fluorescent powder of the light below the 500nm;
At ultraviolet and the blue-light excited fluorescent material that can produce yellowish red color or red emission down;
Mainly, can suitably regulate the position of emission main peak by the ratio of adjusting alkaline-earth metal based on the fluorescent material of transmitting green light;
Can (380～480nm) excite the fluorescent material that produces green-yellow light by blue light and/or ultraviolet ray;
Emission wavelength is the fluorescent material of 550～610nm;
The α of multinomial jaundice green glow, gold-tinted or ruddiness-Sai Long type fluorescent material;
Behind ultraviolet, visible light or the electron beam excitation of 250～500nm wavelength, can be emitted in the fluorescent material of the green glow of 500～600nm.
4) other fluorescent material includes but not limited to:
A kind of can be had the excitation spectrum of broad by the fluorescent material of ultraviolet light and near ultraviolet excitation, can effectively be excited by the light at 300-420nm; By changing component and doping content, can change chromaticity coordinates;
A kind of red fluorescence powder, the emission peak of its excitation band and blue light gallium nitride based LED is overlapping, can effectively be excited, and main emission wavelength is positioned near the 612nm;
A kind of can effectively being excited by ultraviolet, purple light or blue-ray LED and glow, and when burst of ultraviolel another emission peak adjustable fluorescent material from ruddiness to the green glow;
A kind of fluorescent material is that 220 to 550nm visible light or UV radiation are excited the light emission to obtain to wish effectively by wavelength, glows especially efficiently;
A kind of fluorescent material that sends peak position 612nm ruddiness when being excited by LED;
A kind ofly excite the fluorescent material that issues gold-tinted in 300～500nm ultraviolet or blue-ray LED.
Described fluorescent powder membrane layer thickness is: 10～500 microns.
Described fluorescent powder film layer is one deck incessantly, can be as required according to the identical or different fluorescent powder film layer of graded plating several layers.
Aforesaid preparation method with fluorescence conversion device of transparent base is characterized in that comprising the steps:
1) at first transparent base to be coated is cleaned, after the drying, carries out the forevacuum transition; In vacuum equipment, carry out the ion reverse sputtering at last and clean, allow speeding-up ion bombard substrate surface, remove impurity, the transparent base that obtains cleaning;
2) adopt the magnetron sputtering method of being coated with to be coated with rete then:
(1). the preparation target:
Prepare corresponding phosphor material powder, mix and sinter into target.
(2). magnetron sputtering plating: at pure argon or in oxygen argon mixture gas atmosphere transparent base is carried out magnetron sputtering plating, the sputtering pressure scope is 0.10Pa～3.0Pa, during sputter in the argon oxygen gas mixture the shared mass percent of oxygen be 0 to 90%; With ready fluorescent material target transparent base is carried out magnetron sputtering plating and obtain fluorescence conversion device.
Adopting online heating, heat treatment temperature during transparent base plated film described step 2) is 20～160 ℃.
Described step 2) fluorescence conversion device that obtains in adopts off-line heat treatment, and heat treatment temperature is 20～160 ℃, and heat treatment time is 10～240 minutes.
Described transparent base comprises wherein any material of ARTON, COC, COP, PMMA and optical glass.
Wherein ARTON has good optical characteristic, dimensional stability and very high stable on heating transparent resin (cyclic olefin resinoid), in the middle of transparent resin, has very high hear resistance, water absorption rate is low, refractive index is stable, the transparency high (having about transmitance more than 93% in the visible light field), the characteristics that proportion is low are than the optics that is more suitable for led light source.
COC (Cyclic Olefin Copolymer, cyclic olefine copolymer) extremely excellent optical of tool, the high grade of transparency and hear resistance (high glass transition temperature), light weight, low moisture absorption, heat-resisting and excellent processing fluidity, high heat-resisting high optical characteristics, excellently block water, characteristics such as gas barrier property and acid and alkali-resistance solvent, than the optics that is more suitable for led light source.
COP (Cyclo-olefin polymer, cyclic olefin polymer) transparent base of moulding has the characteristics of optical transmittance height (92%), saturated water absorption low (＜0.01%), glass transition temperature and loading flexure temperature higher (being respectively 140 ℃ and 123 ℃), than the optics that is more suitable for led light source.
The transparent base of PMMA (polymethyl methacrylate, acrylic) moulding has that optical transmittance height (92%), water absorption rate are low, shock resistance, wear-resisting, density is little, is widely used optical plastic, than the optics that is more suitable for led light source.
Optical glass is the main material of making optical lens, optical instrument.Optical glass must have highly accurate refractive index, Abbe number and the high grade of transparency, high evenness.Than the optics that is more suitable for led light source.
The present invention uses the led light source of the fluorescence conversion device with transparent base, can make the lighting of Any shape.The present invention is coated with fluorescent powder film layer with magnetron sputtering method on transparent base, the preparation method is simple, and controllability is strong.Led light source of the present invention can improve light extraction efficiency and improve the performance of white light LED part, avoids fluorescent material to be subjected to heat ageing, and improves the uniformity of bulk article on photochromic.
Description of drawings
Fig. 1 is the structural profile schematic diagram of the present invention's led light source of using the fluorescence conversion device with transparent base;
Fig. 2 is the spectral component schematic diagram of an embodiment of led light source of the present invention;
Fig. 3 is the generalized section of the led light source of another embodiment of the present invention;
Fig. 4, Fig. 5, Fig. 6 are the spectral component schematic diagrames of three kinds of embodiment of led light source of the present invention.
The specific embodiment
Embodiment one
See also Fig. 1, a LED device 1 has wherein encapsulated 11, one fluorescence conversion devices 2 of a led chip and has been positioned at led chip 11 tops, and fixing.
During work, the light that led chip 11 sends must be by just being transmitted into the outside behind the fluorescence conversion device 2, by the fluorescent powder film layer above the blue-light excited fluorescence conversion device, the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.
Led chip 11 emission dominant wavelength ranges generally are 420nm～480nm, and the composition of the fluorescent powder film layer on the fluorescence conversion device is for exciting the aluminate YAG fluorescent material of gold-tinted.The blue light that led chip sends is by the fluorescent powder film layer on fluorescence conversion device and the fluorescence excitation conversion equipment, and a part of blue light changes gold-tinted into; Blue light and gold-tinted are mixed just to have produced white light, and chromaticity coordinates, colour temperature depend on the ratio of blue light and gold-tinted.The spectral component of led light source as shown in Figure 2.
Preparation with fluorescence conversion device of transparent base, as an example, present embodiment is selected the ARTON transparent base for use, but also can select COC, COP for use, the transparent base of PMMA or optical glass moulding, other embodiment is identical therewith, comprises the steps:
1) at first ARTON transparent base to be coated is cleaned, after the drying, carries out the forevacuum transition; In vacuum equipment, carry out the ion reverse sputtering at last and clean, allow speeding-up ion bombard substrate surface, remove impurity, the ARTON transparent base that obtains cleaning;
2) adopt the magnetron sputtering method of being coated with to be coated with rete then:
(1). the target of preparation fluorescent material:
(a) YAG fluorescent powder mixture being put into planetary ball mill, is medium with ethanol, and 210r/min wet-milling 24h mixes; (b) grind and sieve; (c) take by weighing the 70g powder and put into homemade graphite jig (Φ 60mm), utilize the multifunctional vacuum hot-pressed sintering furnace, heat up automatically, when temperature reaches 200 ℃, feed the protective gas high-purity N with 5 ℃/min
2(purity 99.995%), when temperature is 1050 ℃, pressurization, hot pressing pressure is 15Mpa, and insulation 2h, cools to room temperature afterwards with the furnace, can obtain the high-compactness target of Φ 60mm * 6mm.
(2). magnetron sputtering plating:
Adopt the vertical three target magnetic control sputtering coating systems of ultrahigh vacuum type, be equipped with rotation system, can make the film thickness of deposition even, reliability is higher.Technological parameter is: sputter gas: 95% argon and 5% oxygen gas mixture (purity 〉=99.9%); Sputter gas flow: 60cm
3/ s; Sputtering pressure: 1.0Pa; Back of the body end vacuum: 6.0 * 10
-5Pa; Sputtering power: 60W, 90W, 120W and 150W; Sputtering time: 3h; The spacing of target and ARTON transparent base is 65mm.The fluorescent powder membrane layer thickness is 210 microns.
Sputter is heat-treated after finishing, and adopts common chamber type electric resistance furnace, is warming up to 160 ℃ with 5～8 ℃/min; Cool to room temperature with the furnace behind the insulation 4h.
In the present embodiment, the ARTON transparent base is circular tabular thin slice.
Embodiment two
Basic identical with embodiment one, the transparent base of different is fluorescence conversion device is shaped to the round lens curved surface, as shown in Figure 3; Clean again and plated film again or be shaped to square lens curved surface.
Embodiment three
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of co-wavelengths, and as two blue chip mutual encapsulation, the emission dominant wavelength ranges generally is 420nm～480nm.
The blue light that led chip sends is by the fluorescent powder film layer on fluorescence conversion device and the fluorescence excitation conversion equipment, and a part of blue light changes gold-tinted into; Blue light and gold-tinted are mixed just to have produced white light, and chromaticity coordinates, colour temperature depend on the ratio of blue light and gold-tinted.The spectral component of led light source as shown in Figure 2.
Embodiment four
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of different wave lengths.Use red LED chip and blue-light LED chip mutual encapsulation in same device.The fluorescent powder membrane composition of layer that plates on the fluorescence conversion device is for can be by blue-light excited silicate or the Nitride phosphor that goes out green glow.Silicate or nitride phosphor material sintering are made into target, transparent base is carried out magnetron sputtering plating, obtain fluorescence conversion device.
The emission dominant wavelength ranges of described blue-light LED chip generally is 380nm～480nm; The emission dominant wavelength ranges of red LED chip generally is 580nm～700nm; The peak wavelength scope of the green light of being launched by blue-light excited fluorescent material generally is: 490nm～570nm.
In the led light source, after the green light that blueness, red light and the fluorescent material that two kinds of led chips send excites is mixed, form white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 4.
The chromaticity coordinates of led light source, colour temperature depend on the ratio of several color of light in the light source.In the light component of led light source, the shared ratio of versicolor light is decided as required.Can perhaps change the luminosity of two kinds of chips by concentration, the thickness of fluorescent powder film layer on configuration quantity of two kinds of chips and the fluorescence conversion device, to change the spectral component of whole light source by the operating current of regulating led chip respectively.In this led light source, ruddiness generally occupies greater than one of percentage ratio in total light intensity or total light flux, specifically according to using needs to decide, accounts for 5%～20% as ruddiness, or 30%～40%, or other arbitrary proportions.
Embodiment five
Basic identical with embodiment one, different is in the LED device, has encapsulated the led chip of a plurality of different wave lengths.Use green light LED chip and blue-light LED chip mutual encapsulation in same device.The fluorescent powder membrane composition of layer that plates on the fluorescence conversion device is for can be by the blue-light excited Nitride phosphor that goes out ruddiness.The nitride phosphor material sintering is made into target, transparent base is carried out magnetron sputtering plating, obtain fluorescence conversion device.
The emission dominant wavelength ranges of described blue-light LED chip generally is 380nm～480nm; The emission dominant wavelength ranges of green light LED chip generally is 490nm～540nm; The peak wavelength scope of the red light of being launched by blue-light excited fluorescent material generally is: 580nm～655nm.
In the led light source, after the red light that blueness, green light and the fluorescent material that two kinds of led chips send excites is mixed, form white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 5.
The chromaticity coordinates of led light source, colour temperature depend on the ratio of several color of light in the light source.In the light component of led light source, the shared ratio of versicolor light is decided as required.Can perhaps change the luminosity of two kinds of chips by concentration, the thickness of fluorescent powder film layer on configuration quantity of two kinds of chips and the fluorescence conversion device, to change the spectral component of whole light source by the operating current of regulating led chip respectively.In this led light source, green glow generally occupies greater than one of percentage ratio in total light intensity or total light flux, specifically according to using needs to decide, accounts for 5%～20% as green glow, or 30%～40%, or other arbitrary proportions.
Embodiment six
Basic identical with embodiment one, different is the preparation of fluorescence conversion device, and comprising in the fluorescent powder film layer can be by the blue-light excited Nitride phosphor that goes out ruddiness and can be by blue-light excited silicate or the Nitride phosphor that goes out green glow.Above-mentioned two kinds of phosphor material powders are mixed in proportion, and sintering is made into target, transparent base is carried out magnetron sputtering plating, obtain fluorescence conversion device.
During work, the light that led chip sends must be by just being transmitted into the outside behind the fluorescence conversion device, by the fluorescent powder film layer above the blue-light excited fluorescence conversion device, and two kinds of phosphor material powders of optical excitation that chip sends under electricity drives, produce ruddiness and green glow respectively, the each several part colour mixture forms white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.The spectral component of led light source as shown in Figure 6.
Embodiment seven
Basic identical with embodiment six, different is the preparation of fluorescence conversion device, two kinds of phosphor material powders sintering respectively are made into target, earlier transparent base is carried out the magnetron sputtering inner layer film by silicate or Nitride phosphor target, on this basis, carry out the magnetron sputtering outer membrane by the Nitride phosphor target again and obtain product; Or by the Nitride phosphor target transparent base is carried out the magnetron sputtering inner layer film earlier, carry out the magnetron sputtering outer membrane by silicate or Nitride phosphor target again and obtain product; Or as required,, form product according to graded plating several layers fluorescent powder film layer.
Embodiment eight
Basic identical with embodiment six, different is the preparation of fluorescence conversion device, contain three kinds of phosphor material powders in the fluorescent powder film layer, comprise can by the blue-light excited Nitride phosphor that goes out ruddiness, can by the blue-light excited silicate that goes out green glow or Nitride phosphor, can be by the blue-light excited YAG fluorescent material that goes out gold-tinted.Above-mentioned three kinds of phosphor material powders are mixed in proportion, and sintering is made into target, transparent base is carried out magnetron sputtering plating, obtain fluorescence conversion device.
During work, the light that led chip sends must be by just being transmitted into the outside behind the fluorescence conversion device, by the fluorescent powder film layer above the blue-light excited fluorescence conversion device, two kinds of phosphor material powders of optical excitation that chip sends under electricity drives, produce ruddiness, green glow and gold-tinted respectively, the each several part colour mixture forms white light.These three kinds of light components form complementary ideally in spectrum, can realize high color developing under high light efficiency.
Equally, similar with embodiment seven, the preparation of fluorescence conversion device also has following scheme: three kinds of phosphor material powders sintering respectively are made into target, successively transparent base are carried out magnetron sputtering plating, obtain product; Or as required,, obtain product according to graded plating several layers fluorescent powder film layer.
Embodiment nine
A plurality of LED devices 1 are combined, and are installed on the PCB 3.At the light direction of all LED devices, a fluorescence conversion device 2 has been installed.
Use a fluorescence conversion device by a plurality of LED devices are common, comprise that also other must element such as PCB, shell, electronic component etc., constitute a led light source; The structure of whole LED light source is decided as required.During this led light source work, the light that led chip in all LED devices sends must be by just being transmitted into the outside behind the fluorescence conversion device, by blue light or the fluorescent powder film layer above the ultraviolet chip fluorescence excitation conversion equipment, the optical excitation fluorescent material that chip sends under electricity drives produces the visible light of other wave band, and the each several part colour mixture forms white light.
Wherein LED device 1 can be monochrome or polychrome, and during for monochrome, the led chip of at least one a certain emission wavelength of encapsulation in the LED device is the blue light of 460nm as dominant wavelength for example.During for polychrome, with the led chip mutual encapsulation of multiple different emission in a LED device, for example as the mutual encapsulation of red, blue two color chip mutual encapsulation or other color chip portfolio.
Embodiment ten
Being a kind of example of light fixture, is by the common led light source that uses a fluorescence conversion device of a plurality of LED devices equally.A plurality of LED device 1 is combined according to certain rule, and a spherical cover 2 of solid has been installed in the outside, and this cover is a fluorescence conversion device.During this led light source work, the light that the led chip in all LED devices sends is mixed into white light through fluorescence conversion device and is transmitted into the outside.
Be suitable for the schematic diagram of the led light source of embodiments of the invention one～embodiment eight as the LCD TV backlight origin system.
The led light source 4 that a plurality of uses have the fluorescence conversion device of transparent base is installed on the PCB5, and led light source is evenly distributed.
Led light source adopts paster that the form of (SMT) is installed, and has made corresponding circuit on the PCB, makes the led light source can operate as normal.
At the light direction of led light source, be arranged in order diffuser plate 6 and a series of blooming 7.
During work, the light that led light source sent all enters diffuser plate, and through fully reflection mixing, by blooming, its effect is that the direction of light is put in order again.Last light shines the rear surface of liquid crystal panel, forms back lighting.
As backlight, present embodiment can be used for various liquid crystal displays, and for example: LCD TV, watch-dog, display are applicable to industry, field such as civilian, military.
More than be that preferred implementation of the present invention is described, those skilled in the art is in the scheme scope of the technology of the present invention, and common variation and the replacement carried out all should be included in protection scope of the present invention.
Claims (9)
1. a use has the led light source of the fluorescence conversion device of transparent base, comprise LED device with at least one led chip, and be installed in fluorescence conversion device on the LED device with transparent base, wherein the light that sends of led chip is mixed into white light through fluorescence conversion device and is transmitted into the outside, it is characterized in that:
Described LED device is monochrome or polychrome, and monochrome is the led chip of a certain emission wavelength of encapsulation in the LED device, and polychrome is that led chip mutual encapsulation with multiple different emission is in a LED device; Described fluorescence conversion device be by ARTON, COC, COP, PMMA and optical glass wherein the transparent base of any forming materials carry out the fluorescent material plated film and form, wherein by the fluorescent powder film layer above the led chip fluorescence excitation converter device, produce the visible light of other wave band, the each several part colour mixture forms white light.
2. led light source according to claim 1, it is characterized in that described fluorescence conversion device can just add when the packaged LED device, also can when the LED device being carried out the secondary encapsulation, install, or fluorescence conversion device of the common use of a plurality of LED device.
3. led light source according to claim 1 is characterized in that described transparent base is shaped to the lens of arbitrary surface, perhaps any diaphragm, perhaps any solid geometry shape.
4. led light source according to claim 1 is characterized in that being produced by blue light or the fluorescent powder film layer above the ultraviolet chip fluorescence excitation conversion equipment visible light of other wave band, and the each several part colour mixture forms white light.
5. led light source according to claim 1 is characterized in that fluorescent material comprises following any or following any several combinations:
1) aluminate serial fluorescent material includes but not limited to:
YAG fluorescent material, contain the YAG fluorescent material of alloy, can be used for white light LEDs, wavelength-tunable, exciting light is green, yellow green, yellow or orange fluorescent powder;
2) silicate series fluorescent material includes but not limited to:
Contain rare earth, silicon, alkaline-earth metal, halogen, oxygen, and the silicate fluorescent powder of aluminium or gallium, under blue light, purple light or ultraviolet excitation, send peak value at the broadband of 500～600nm visible light, half-peak breadth is greater than 30nm;
The fluorescent material that forms by multiple element combinations such as alkaline-earth metal, rare earth, transition metal, halogens, can be used as the light-emitting component of the emission spectrum of excitation source in ultraviolet-green glow zone of 240～510nm excites, send the emission spectrum of peak value in 430～630 scopes, can present the light of indigo plant, bluish-green, green, yellowish green, yellow, Huang Hong, red, white colour;
Europkium-activated alkaline-earth metal phosphosilicate fluorescent material, emission wavelength ranges is at the bluish-green yellow orange light that arrives;
Be suitable for the yellow fluorescent powder that 220～530nm excites; With the orange colour silicate fluorescent powder of wavelength greater than 565nm;
3) nitride/nitrous oxides series fluorescent material includes but not limited to:
Be suitable for by the led chip excited fluorescent powder of 420～470nm, produce the emission of gold-tinted-ruddiness;
Can be obtained the wide range emission of 520～780nm by the effective excited fluorescent powder of the light below the 500nm;
At ultraviolet and the blue-light excited fluorescent material that can produce yellowish red color or red emission down;
Mainly, can suitably regulate the position of emission main peak by the ratio of adjusting alkaline-earth metal based on the fluorescent material of transmitting green light;
Can (380～480nm) excite the fluorescent material that produces green-yellow light by blue light and/or ultraviolet ray;
Emission wavelength is the fluorescent material of 550～610nm;
The α of multinomial jaundice green glow, gold-tinted or ruddiness-Sai Long type fluorescent material;
Behind ultraviolet, visible light or the electron beam excitation of 250～500nm wavelength, can be emitted in the fluorescent material of the green glow of 500～600nm;
4) other fluorescent material includes but not limited to:
A kind of can be had the excitation spectrum of broad by the fluorescent material of ultraviolet light and near ultraviolet excitation, can effectively be excited by the light at 300-420nm; By changing component and doping content, can change chromaticity coordinates;
A kind of red fluorescence powder, the emission peak of its excitation band and blue light gallium nitride based LED is overlapping, can effectively be excited, and main emission wavelength is positioned near the 612nm;
A kind of can effectively being excited by ultraviolet, purple light or blue-ray LED and glow, and when burst of ultraviolel another emission peak adjustable fluorescent material from ruddiness to the green glow;
A kind of fluorescent material is that 220 to 550nm visible light or UV radiation are excited the light emission to obtain to wish effectively by wavelength, glows especially efficiently;
A kind of fluorescent material that sends peak position 612nm ruddiness when being excited by LED;
A kind ofly excite the fluorescent material that issues gold-tinted in 300～500nm ultraviolet or blue-ray LED.
6. led light source according to claim 1 is characterized in that described fluorescent powder membrane layer thickness is: 10～500 microns, fluorescent powder film layer one deck incessantly wherein can be as required according to the identical or different fluorescent powder film layer of graded plating several layers.
7. the preparation method with fluorescence conversion device of transparent base is characterized in that comprising the steps:
1) at first transparent base to be coated is cleaned, after the drying, carries out the forevacuum transition; In vacuum equipment, carry out the ion reverse sputtering at last and clean, allow speeding-up ion bombard substrate surface, remove impurity, the transparent base that obtains cleaning;
2) adopt the magnetron sputtering method of being coated with to be coated with rete then:
(1). the preparation target:
Prepare corresponding phosphor material powder, mix and sinter into target;
(2). magnetron sputtering plating: at pure argon or in oxygen argon mixture gas atmosphere transparent base is carried out magnetron sputtering plating, the sputtering pressure scope is 0.10Pa～3.0Pa, during sputter in the argon oxygen gas mixture the shared mass percent of oxygen be 0 to 90%; With ready fluorescent material target transparent base is carried out magnetron sputtering plating and obtain fluorescence conversion device.
8. the preparation method of fluorescence conversion device according to claim 7 is characterized in that described step 2) in the transparent base plated film time to adopt online heating, heat treatment temperature be 20～160 ℃.
9. the preparation method of fluorescence conversion device according to claim 7, it is characterized in that described transparent base be ARTON, COC, COP, PMMA and optical glass wherein any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102653069A CN101881420B (en) | 2009-06-08 | 2009-12-29 | LED light source using fluorescence conversion device with transparent base material |
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910107692 | 2009-06-08 | ||
| CN200910107690.X | 2009-06-08 | ||
| CN200910107690 | 2009-06-08 | ||
| CN200910107692.9 | 2009-06-08 | ||
| CN200910107691.4 | 2009-06-08 | ||
| CN200910107693.3 | 2009-06-08 | ||
| CN200910107689 | 2009-06-08 | ||
| CN200910107693 | 2009-06-08 | ||
| CN200910107691 | 2009-06-08 | ||
| CN200910107689.7 | 2009-06-08 | ||
| CN2009102653069A CN101881420B (en) | 2009-06-08 | 2009-12-29 | LED light source using fluorescence conversion device with transparent base material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101881420A true CN101881420A (en) | 2010-11-10 |
| CN101881420B CN101881420B (en) | 2012-05-23 |
Family
ID=43053502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102653069A Expired - Fee Related CN101881420B (en) | 2009-06-08 | 2009-12-29 | LED light source using fluorescence conversion device with transparent base material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101881420B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159664A1 (en) * | 2012-04-26 | 2013-10-31 | Qian Zhiqiang | White light led light-emitting device and method for preparing thereof |
| WO2014101602A1 (en) * | 2012-12-24 | 2014-07-03 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | Led packaging structure using distant fluorescent powder layer and manufacturing method thereof |
| CN107146838A (en) * | 2017-07-05 | 2017-09-08 | 廖伟春 | The packaging technology and LED component of a kind of LED component |
| CN107861321A (en) * | 2016-09-22 | 2018-03-30 | 上海激亮光电科技有限公司 | A kind of hybrid laser projection of optical fiber fluorescence wheel and its control method |
| CN109282246A (en) * | 2018-11-01 | 2019-01-29 | 苏州晶清光电科技有限公司 | A kind of Wavelength converter, light source module group and headlamp |
| CN110556466A (en) * | 2019-09-19 | 2019-12-10 | 江门江雷光电科技有限公司 | LED lamp pearl with anti-light cup |
| CN110885195A (en) * | 2018-09-10 | 2020-03-17 | 广州市辉乐医药科技有限公司 | Manufacturing method of anti-laser glasses |
| CN112563382A (en) * | 2019-09-25 | 2021-03-26 | 昆山科技大学 | White light LED structure and its manufacturing method |
| CN112782909A (en) * | 2019-11-07 | 2021-05-11 | 杭州海康威视数字技术股份有限公司 | Light supplementing device for camera |
| CN114777079A (en) * | 2022-04-07 | 2022-07-22 | 浙江光塔安全科技有限公司 | Optical fiber light-emitting line fluorescent lighting setting method convenient for fire-fighting life-saving lighting |
-
2009
- 2009-12-29 CN CN2009102653069A patent/CN101881420B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159664A1 (en) * | 2012-04-26 | 2013-10-31 | Qian Zhiqiang | White light led light-emitting device and method for preparing thereof |
| WO2014101602A1 (en) * | 2012-12-24 | 2014-07-03 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | Led packaging structure using distant fluorescent powder layer and manufacturing method thereof |
| CN107861321A (en) * | 2016-09-22 | 2018-03-30 | 上海激亮光电科技有限公司 | A kind of hybrid laser projection of optical fiber fluorescence wheel and its control method |
| CN107861321B (en) * | 2016-09-22 | 2023-12-01 | 上海激亮光电科技有限公司 | Optical fiber fluorescent wheel hybrid laser projector and control method thereof |
| CN107146838A (en) * | 2017-07-05 | 2017-09-08 | 廖伟春 | The packaging technology and LED component of a kind of LED component |
| CN107146838B (en) * | 2017-07-05 | 2019-02-26 | 深圳市彩立德照明光电科技有限公司 | A kind of packaging technology and LED component of LED component |
| CN110885195A (en) * | 2018-09-10 | 2020-03-17 | 广州市辉乐医药科技有限公司 | Manufacturing method of anti-laser glasses |
| CN109282246A (en) * | 2018-11-01 | 2019-01-29 | 苏州晶清光电科技有限公司 | A kind of Wavelength converter, light source module group and headlamp |
| CN110556466A (en) * | 2019-09-19 | 2019-12-10 | 江门江雷光电科技有限公司 | LED lamp pearl with anti-light cup |
| CN112563382A (en) * | 2019-09-25 | 2021-03-26 | 昆山科技大学 | White light LED structure and its manufacturing method |
| CN112782909A (en) * | 2019-11-07 | 2021-05-11 | 杭州海康威视数字技术股份有限公司 | Light supplementing device for camera |
| CN114777079A (en) * | 2022-04-07 | 2022-07-22 | 浙江光塔安全科技有限公司 | Optical fiber light-emitting line fluorescent lighting setting method convenient for fire-fighting life-saving lighting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101881420B (en) | 2012-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101881420B (en) | LED light source using fluorescence conversion device with transparent base material | |
| CN101881419B (en) | LED light source using optical device with transparent base material | |
| EP2140502B1 (en) | Illumination system | |
| CN201416780Y (en) | LED light source using optical device with ARTON transparent substrate | |
| CN201039523Y (en) | A high color index high-power white light LED part | |
| CN101899301B (en) | LED light-emitting material, LED light-emitting device and manufacturing method | |
| TW200836377A (en) | White light emitting device and white light source module using the same | |
| JP2011509427A (en) | Display device and lighting device | |
| CN101592291A (en) | LED lamp preparation method that a kind of colour temperature is adjustable and LED lamp | |
| CN103779346A (en) | Near ultraviolet or ultraviolet excited LED light-emitting device | |
| CN101314519A (en) | Rare earth doping luminescent glass for white radiation LED and producing thereof | |
| CN201416781Y (en) | LED light source using optical device with COC transparent substrate | |
| CN102136541A (en) | Transparent ceramic white-light LED (Light-Emitting Diode) device | |
| CN101572262A (en) | Wide-spectrum white-light LED | |
| CN109256458A (en) | A kind of LED product encapsulating structure and its packaging method | |
| CN102620167A (en) | Transparent ceramic white light emitting diode (LED) and preparation method thereof | |
| JP2010155891A (en) | Nitride red phosphor and white light emitting diode utilizing the same | |
| CN201209828Y (en) | Wide spectrum white light LED | |
| CN105870306A (en) | Integrated package long-afterglow LED light-emitting chip and manufacturing method thereof | |
| CN201764276U (en) | LED light source using fluorescence conversion device with optical glass transparent base material | |
| CN209658228U (en) | A kind of full spectrum COB light source | |
| CN102959743A (en) | Light emitting device and LED bulb | |
| CN201764275U (en) | Light emitting diode (LED) light source using fluorescence conversion device with ARTON transparent substrate | |
| CN201764278U (en) | Light-emitting diode (LED) light source using fluorescence conversion device with coefficient of performance (COP) transparent substrate | |
| CN201764279U (en) | LED light source using fluorescence conversion device with polymethyl methacrylate (PMMA) transparent base material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Xinyang Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |