CN102368496A - Light conversion module - Google Patents
Light conversion module Download PDFInfo
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- CN102368496A CN102368496A CN2011102767194A CN201110276719A CN102368496A CN 102368496 A CN102368496 A CN 102368496A CN 2011102767194 A CN2011102767194 A CN 2011102767194A CN 201110276719 A CN201110276719 A CN 201110276719A CN 102368496 A CN102368496 A CN 102368496A
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Abstract
The invention relates to a module possessing a light conversion function. An organic silicone rubber is taken as a carrier. An LED phosphor and an organic light diffuser agent are added to form the light conversion module. The module is soft and elastic. A preparation method is characterized by: mixing organic silicon glue, the LED phosphor and the organic light diffuser agent uniformity; injecting into a mould, heating, curing and molding. The module can be used in a blue ray LED light source. The LED phosphor can be excited to glow by the blue ray emitted by the blue ray LED light source, and through reflection, refraction and scattering effects of the organic light diffuser agent, the light of the LED phosphor and the blue ray which is not be absorbed are composited into the white light or the light with other colors. The light color and intensity of the obtained compound light distribute uniformly, and are soft without glare. The compound light can realize the wide-angle light and can be applied in LEC illumination and decorative lamps.
Description
Technical field
The present invention relates to a kind of module, belong to the LED lighting technical field with photochromic translation function.
Technical background
At present along with the petering out of the energy, the progressively deterioration of environment, low-carbon environment-friendly all advocating green economy, green living, is advocated in the whole world.Under the promotion of this overall background, the LED lighting technology is because characteristics such as its energy-saving and environmental protection, high light efficiency, life-span length have obtained development energetically.
Present LED light fixture all is to adopt the blue chip excitated fluorescent powder mostly, receives the excited fluorescent powder and launches coloured light such as green, yellow, orange, red again, is becoming white light with the blue light that is not absorbed by fluorescent material.Under this principle, blue light is directly emitted by semiconductor chip, belongs to point-source of light; Luminous point quantity is by the quantity decision of chip, and the directivity of light is very strong, points to pcb board one side; Other coloured light of being launched by fluorescent material are then emitted by numerous fluorescent powder grain; Light points to from all directions, belongs to area source, does not have the direction of confirming.Cause transmit blue not overlap fully thus, thereby cause the photochromic uniformity of LED light fixture relatively poor with other coloured light transmit directions; Simultaneously, comparatively dazzling because blue chip is a point-source of light, be easy to generate dazzle, people's eyes are damaged.
In addition, the light conversion film layer thickness that some packaging technologies obtain is inhomogeneous, also can cause the fluorescent material skewness, makes that the absorbed degree of blue light is different, can make that equally the photochromic uniformity of the white light that obtains is relatively poor.
For the problem of the photochromic uniformity, the way that adopts at present is summarised as following several kinds basically:
1. packaging technology is done improvement; Made to make in advance the method for directly putting glue into fluorescent material lamella or modes such as rete or module; As: CN201096279, CN201062757, these class methods can solve the problem of the inhomogeneous emitted fluorescence colourity inequality that causes of fluorescent material CONCENTRATION DISTRIBUTION in the glue and the colour temperature difference of different lamps; But the exit direction of blue light does not change, and the distribution of blue light still has uneven phenomenon.
2. outside phosphor powder layer, increase diffusion barrier or frosted cover; These class methods are used a lot, can realize improving the distribution consistency degree of light is whole, but these class methods tend to cause the decline of light extraction efficiency; If reach the desirable photochromic uniformity, can use light efficiency losses usually more than 10%.
3. in packaging plastic, add inorganic diffusant; These class methods also can realize improving the distribution consistency degree of light is whole; But can use light efficiency losses equally more than 5%, and the cost of this type of diffusant is very high, and the viscosity of silica gel is obviously risen; Influence the flowability of silica gel, make injecting glue become difficult more.
4. what have increases lens arrangement outside phosphor powder layer, CN201096279, these class methods of CN201363572 can effectively change rising angle usually, but can not well solve the problem of the photochromic uniformity, dazzle, aperture phenomenon still can occur.And the design more complicated of lens shape.
Summary of the invention
In order to overcome above-mentioned defective, the present invention adopts organic silicon rubber as moulding material, and interpolation LED fluorescent material, organic light diffusing agent mix the back and process module through being heating and curing through the form of casting.Situation according to using can become different shape with mold design, processes the module of different shape.Like hemisphere, candle flame type etc., and different thickness can be arranged.Module after the moulding is pliable and tough flexible, can directly be sleeved on the pedestal of the wiring board that has encapsulated led chip, and blended rubber sticks the agent permanent fixation.Blue-light LED chip is launched the blue light in 440～475nm scope; LED fluorescent material in the module excites; LED fluorescent material absorbs blue emission and goes out the emission spectrum of at least more than one peak wavelength in 525～650nm scope; All light finally is combined into the light of the high white light of the uniformity or other color through processes such as the reflection of organic light diffusing agent, refraction, scatterings.
The module that technical scheme of the present invention is related is made up of organic silicon rubber, LED fluorescent material, organic light diffusing agent jointly, and each constituent component and mass percent are formed as follows:
Organic silicon rubber 30.0-95.9%
LED fluorescent material 4.0-65.0%
Organic light diffusing agent 0.1-5.0%
Wherein:
Said organic silicon rubber is the dual composition addition type sulfuration liquid silastic of heating;
Said LED fluorescent material is one or both in aluminate fluorescent material, silicate fluorescent material, nitride/nitrogen oxide fluorescent material, sulfide/oxysulfide fluorescent material, composite oxides fluorescent material, molybdate fluorescent material or the borate fluorescent material; LED fluorescent material is excited by the blue-ray LED of emission spectrum spectrum spike length in 440～475nm scope, launches the emission spectrum of at least one peak wavelength in 525～650nm scope; LED fluorescent material issued light and blue-ray LED issued light are combined into the light of white or other color;
Said organic light diffusing agent is polymethyl methacrylate, polystyrene or organosilicon.
The thickness of said smooth modular converter is 1.0-3.0mm.
The preferred 3-15 micron of LED fluorescent material particle diameter, LED fluorescent material is uniformly dispersed in the product of preparing, and illumination effect is good.LED fluorescent material can be by ultraviolet or blue-ray LED stimulated luminescence, and is combined into the light of white light or other color with residue ultraviolet or blue light.Described various its body colour of LED fluorescent material and glow color take on a different character; When making module, can select for use, can select silicate, aluminate fluorescent material, be called for short orange, yellow fluorescent material as orange, Yellow luminous fluorescent material according to condition of different separately; Select silicon nitride, oxysulfide fluorescent material as red fluorescence material; Can be with yellow fluorescent material, fluorescent orange material and the compound use of red fluorescence material, compound use can be adjusted chromaticity coordinates, colour temperature and color rendering index, reaches to be applicable to multi-purpose purpose; Adopt yellow fluorescent material and the compound use of red fluorescence material; Improve color rendering index, obtain the white light of high color rendering index (CRI), it is applicable in the luminescent device that needs high color rendering index (CRI).
The organic silicon rubber that adopts is transparency dual composition addition type good, soft, good springiness the sulfuration liquid silastic of heating.Like bi-component organosilicon material SR-5000A/B, TCS-1310T/A/B, SN130P/A/B, ZS-0020A/B, 170/A/B.This resin has good, the excellent electrical insulation capability of thermo oxidative stability, remarkable moisture resistance, waterproof, antirust, cold-resistant, anti-ozone and weather resistance.This resin is worked under the long-time condition of high temperature can xanthochromia yet.
The organic light diffusing agent that adopts is the powder that a kind of macromolecular material is processed; Particle size distribution range is at 1-20 μ m; Preferred 3-15 μ m, powder particle inside is the highly transparent structure, high temperature resistant more than 200 ℃ not xanthochromia do not decompose; Having higher refractive index, can be materials such as polymethyl methacrylate, polystyrene, organosilicon.Light diffusing agent is added on organic silicon rubber the inside according to predetermined addition, through various dispersing apparatus make it with its in fluorescent powder grain fully mix, the diffusant that is added into is filled in the gap of fluorescent powder grain; Can the light that blue light and fluorescent material send be reflected, refraction, scattering, and then make all light change transmit direction, all point to from all directions; And there is not special direction; And then make it to reach even mixing, and make led chip become area source by point-source of light, light is softer; Eliminate dazzling dazzle, significantly increase rising angle.
Said organic light diffusing agent addition can be adjusted according to the thickness of light transfer medium and the photochromic uniformity difference of requirement flexibly.
Dispersing apparatus can be a high speed dispersor, the various equipment that possess the grinding divergent function such as perhaps centrifugal dispersion machine, ball mill, glue-injection machine.Because organic spread powder specific area is bigger, methods such as conventional stirring are difficult to it is disperseed fully, must use above several method could it be disperseed fully, give full play to its light diffusion function.
Organic siliconresin, LED fluorescent material, organic light diffusing agent mix the back through the casting form through the moulding that is heating and curing.Can be cast into different shape according to the needs of light fixture, like hemisphere, flame type etc.The casting that the present invention adopts be dispersion through heated polymerizable and curing molding, promptly organic silicon rubber, LED fluorescent material and organic light diffusing agent mix the back and inject in the mould, through heated polymerizable and curing molding becomes the goods identical with the dies cavity shape.
Beneficial effect of the present invention is:
1. in the light modular converter, add organic diffusant; Can the blue light that is not absorbed by fluorescent powder grain be reflected, effects such as refraction, scattering, to change the transmit direction of blue light, blue light is overlapped fully with the transmit direction of other coloured light; And make it even mixing; And then improve the photochromic uniformity, and eliminate dazzle, significantly increase the light source rising angle.
2. because organic diffusant makes blue light no longer have specific direction, can not directly see through module, point-source of light has become area source, and evenly disperses, and has eliminated dazzle, and it is softer that light becomes, and avoids injuring eyes.
3. because the granule interior of employed organic diffusant is a transparent configuration, can not form absorption, only can form reflection, refraction and scattering process, thereby guarantee that light extraction efficiency can not descend light to light.
4. organic diffusant is compared with inorganic diffusant, and its diameter is very little, and its amounts of particles of the diffusant of equal in quality is many; Thereby can fully be distributed in the middle of the slit of fluorescent powder grain; Make even optical efficiency very high, only need very little use amount just can reach very high even light effect, and cost is lower.
5. the organic diffusant that uses does not have thixotropy, can not improve the viscosity of packaging plastic after adding, and can not increase the difficulty of cast, and is fine with various smooth transfer medium compatibilities.
Description of drawings
The fitting structure figure that Fig. 1 hemisphere light modular converter is processed;
The fitting structure figure that Fig. 2 candle light type light modular converter is processed;
Wherein:
The 1-support
The 2-PCB plate
The 3-LED blue chip
4-leaded light glue
5-light modular converter
The 6-lampshade
Embodiment
Embodiment 1:
Organic silicon rubber 10g (93.4%)
Organic light diffusing agent 0.2g (1.9%)
Aluminate yellow fluorescent material: 0.5g (4.7%)
Organic silicon rubber wherein is the dual composition addition type sulfuration liquid silastic of heating.
Liquid charging stock in the prescription is added in the proportion container, stir, under stirring, add fluorescent material, stir and carry out the vacuum defoamation processing.The raw mix of liquid state is joined in the hemisphere mould, put into 145 ℃ of baking ovens and be cured, time 20min takes out the light modular converter of moulding after the curing and gets final product from mould, and the module thickness of preparation is 1.0mm.
The module of preparing is sleeved on the pedestal of the wiring board that has encapsulated led chip, and blended rubber sticks the agent permanent fixation.Fluorescent material is luminous by the optical excitation that blue-ray LED sent, and is combined into white light with unabsorbed blue light, colour temperature 6500K, lighting angle 180 degree.
Embodiment 2:
Organic silicon rubber wherein is the dual composition addition type sulfuration liquid silastic of heating.
Liquid charging stock in the prescription is added in the proportion container, stir, under stirring, add fluorescent material, stir and carry out the vacuum defoamation processing.The raw mix of liquid state is joined in the hemisphere mould, put into 145 ℃ of baking ovens and be cured, time 20min takes out the module of moulding after the curing and gets final product from mould, and the module thickness of preparation is 1.2mm.
The module of preparing is sleeved on the pedestal of the wiring board that has encapsulated led chip, and blended rubber sticks the agent permanent fixation.Fluorescent material is luminous by the optical excitation that blue-ray LED sent, and is combined into warm white with unabsorbed blue light, colour temperature 2700K, rising angle 175 degree.
Embodiment 3:
Embodiment 4:
Organic silicon rubber 10g (93.0%)
Organic light diffusing agent 0.1g (0.9%)
Aluminate yellow fluorescent material 0.65g (6.1%)
Organic silicon rubber wherein is the dual composition addition type sulfuration liquid silastic of heating.
Liquid charging stock in the prescription is added in the proportion container, stir, under stirring, add fluorescent material, stir and carry out the vacuum defoamation processing.The raw mix of liquid state is joined in the hemisphere mould; Putting into 145 ℃ of baking ovens is cured; Time 20min; After the curing module of moulding taken out from mould and get final product, the module thickness of preparation is that the module that 1.5mm prepares is sleeved on the pedestal of the wiring board that has encapsulated led chip, and blended rubber sticks the agent permanent fixation.Fluorescent material is luminous by the optical excitation that blue-ray LED sent, and is combined into white light with unabsorbed blue light, colour temperature 6500K, rising angle 180 degree.
Embodiment 5:
Organic silicon rubber wherein is the dual composition addition type sulfuration liquid silastic of heating.
Liquid charging stock in the prescription is added in the proportion container, stir, under stirring, add fluorescent material, stir and carry out the vacuum defoamation processing.The raw mix of liquid state is joined in the hemisphere mould; Putting into 145 ℃ of baking ovens is cured; Time 20min; After the curing module of moulding taken out from mould and get final product, the module thickness of preparation is that the module that 3.0mm prepares is sleeved on the pedestal of the wiring board that has encapsulated led chip, and blended rubber sticks the agent permanent fixation.Fluorescent material is luminous by the optical excitation that blue-ray LED sent, and is combined into warm white with unabsorbed blue light, colour temperature 2700K, rising angle 180 degree.
Claims (4)
1. light modular converter, the mass percent of its constituent is:
Organic silicon rubber 30.0%～95.9%
LED fluorescent material 4.0%～65.0%
Organic light diffusing agent 0.1%～5.0%
Wherein: said organic silicon rubber is the dual composition addition type sulfuration liquid silastic of heating;
Said LED fluorescent material is one or both in aluminate fluorescent material, silicate fluorescent material, nitride/nitrogen oxide fluorescent material, sulfide/oxysulfide fluorescent material, composite oxides fluorescent material, molybdate fluorescent material or the borate fluorescent material; LED fluorescent material is excited by the blue-ray LED of emission spectrum spectrum spike length in 440～475nm scope, launches the emission spectrum that at least one peak wavelength is 525～650nm; LED fluorescent material issued light and blue-ray LED issued light are combined into the light of white or other color;
Said organic light diffusing agent is polymethyl methacrylate, polystyrene or organosilicon, and particle size range is 1-20 μ m.
2. smooth modular converter according to claim 1 is characterized in that organic light diffusing agent particle size range is 3-15 μ m.
3. smooth modular converter according to claim 1 is characterized in that described LED fluorescent material particle diameter scope is 3-15 μ m.
4. smooth modular converter according to claim 1, the thickness that it is characterized in that said smooth modular converter is 1.0-3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102767194A CN102368496A (en) | 2011-09-16 | 2011-09-16 | Light conversion module |
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| CN2011102767194A CN102368496A (en) | 2011-09-16 | 2011-09-16 | Light conversion module |
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| CN102368496A true CN102368496A (en) | 2012-03-07 |
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| CN102916110A (en) * | 2012-09-05 | 2013-02-06 | 肇庆市立得电子有限公司 | Packaging technology for white LED (Light Emitting Diode) |
| CN103013491A (en) * | 2012-12-20 | 2013-04-03 | 杭州纳晶科技有限公司 | Silica gel fitting and fabrication method thereof, and LED lamp provided with silica gel fitting |
| CN103915545A (en) * | 2014-03-14 | 2014-07-09 | 苏州晶品光电科技有限公司 | Semiconductor led white light source |
| CN105765744A (en) * | 2013-10-24 | 2016-07-13 | 东丽株式会社 | Phosphor composition, phosphor sheet, phosphor sheet laminate, LED chip and LED package each using said phosphor composition, phosphor sheet or phosphor sheet laminate, and method for manufacturing LED package |
| CN105845812A (en) * | 2016-05-09 | 2016-08-10 | 深圳市聚飞光电股份有限公司 | LED fluorescent glue and packaging method for improving luminescence uniformity, and LED |
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| CN110970543A (en) * | 2019-12-05 | 2020-04-07 | 江西省晶能半导体有限公司 | Fluorescent diaphragm and white light LED chip |
| CN113437052A (en) * | 2021-05-06 | 2021-09-24 | 福州大学 | Color conversion layer for improving microminiature LED backlight or display uniformity and preparation method thereof |
| CN113831837A (en) * | 2021-10-18 | 2021-12-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | Particle size controllable laser scatterer and preparation method and application thereof |
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| CN102916110B (en) * | 2012-09-05 | 2016-12-07 | 肇庆市立得电子有限公司 | A kind of packaging technology of white light LEDs |
| CN102916110A (en) * | 2012-09-05 | 2013-02-06 | 肇庆市立得电子有限公司 | Packaging technology for white LED (Light Emitting Diode) |
| CN103013491A (en) * | 2012-12-20 | 2013-04-03 | 杭州纳晶科技有限公司 | Silica gel fitting and fabrication method thereof, and LED lamp provided with silica gel fitting |
| CN103013491B (en) * | 2012-12-20 | 2015-06-10 | 纳晶科技股份有限公司 | Silica gel fitting and fabrication method thereof, and LED lamp provided with silica gel fitting |
| TWI657599B (en) * | 2013-10-24 | 2019-04-21 | 日商東麗股份有限公司 | Fluorescent substance composition, fluorescent substance sheet, fluorescent substance sheet laminate and led chip using them, led package and method for producing the same |
| CN105765744A (en) * | 2013-10-24 | 2016-07-13 | 东丽株式会社 | Phosphor composition, phosphor sheet, phosphor sheet laminate, LED chip and LED package each using said phosphor composition, phosphor sheet or phosphor sheet laminate, and method for manufacturing LED package |
| CN105765744B (en) * | 2013-10-24 | 2019-01-22 | 东丽株式会社 | Fluorescencer composition, fluorophor sheet material, fluorophor sheet material lamilate and the LED chip, LED package and its manufacturing method that have used them |
| CN103915545A (en) * | 2014-03-14 | 2014-07-09 | 苏州晶品光电科技有限公司 | Semiconductor led white light source |
| CN103915545B (en) * | 2014-03-14 | 2017-05-17 | 苏州晶品新材料股份有限公司 | Semiconductor led white light source |
| CN106848031A (en) * | 2015-12-04 | 2017-06-13 | 财团法人工业技术研究院 | The encapsulating structure of ultraviolet light-emitting diodes |
| US10134963B2 (en) | 2015-12-04 | 2018-11-20 | Industrial Techology Research Institute | Package structure of an ultraviolet light emitting diode |
| CN105845812A (en) * | 2016-05-09 | 2016-08-10 | 深圳市聚飞光电股份有限公司 | LED fluorescent glue and packaging method for improving luminescence uniformity, and LED |
| WO2018219346A1 (en) * | 2017-06-01 | 2018-12-06 | 苏州欧普照明有限公司 | Led heating method, device, component, bathroom heater, and warmer |
| CN110047399A (en) * | 2019-03-18 | 2019-07-23 | 厦门仁尚光电科技有限公司 | Luminescent characters even photosphere and preparation method thereof, luminescent characters |
| CN110165040A (en) * | 2019-06-14 | 2019-08-23 | 深圳市晶锐光电有限公司 | A kind of fluorescent glue and its packaging technology improving hot spot |
| CN110970543A (en) * | 2019-12-05 | 2020-04-07 | 江西省晶能半导体有限公司 | Fluorescent diaphragm and white light LED chip |
| CN113437052A (en) * | 2021-05-06 | 2021-09-24 | 福州大学 | Color conversion layer for improving microminiature LED backlight or display uniformity and preparation method thereof |
| CN113437052B (en) * | 2021-05-06 | 2024-01-30 | 福州大学 | Color conversion layer for improving backlight or display uniformity of micro-LED and preparation method thereof |
| CN113831837A (en) * | 2021-10-18 | 2021-12-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | Particle size controllable laser scatterer and preparation method and application thereof |
| CN113831837B (en) * | 2021-10-18 | 2022-12-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | Particle size controllable laser scatterer and preparation method and application thereof |
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Application publication date: 20120307 |