CN103227268B - A kind of LED fluorescent material coating process - Google Patents
A kind of LED fluorescent material coating process Download PDFInfo
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- CN103227268B CN103227268B CN201310107768.4A CN201310107768A CN103227268B CN 103227268 B CN103227268 B CN 103227268B CN 201310107768 A CN201310107768 A CN 201310107768A CN 103227268 B CN103227268 B CN 103227268B
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Abstract
The invention discloses a kind of LED fluorescent material coating process, aluminum alloy surface is used as the diffuse surface of LED light source, aluminium alloy is through surface treatment, surface treatment comprises aluminium alloy anode oxide processing, nano-phosphor finishing processing, the filling processing of nano-phosphor and sealing of hole processing, aluminum alloy surface is converted to gold-tinted by the blue light of LED transmitting through the transformation part of nano-phosphor as diffuse surface, and gold-tinted and blue light become white light. Technique effect of the present invention is: fluorescent material is no longer the obstruction of LED heat radiation, and fluorescent material also can not worked at higher temperature simultaneously, is the preferred technical scheme of one of ultra high power LED light source.
Description
Technical field
The invention belongs to LED lighting technical field, be specifically related to a kind of LED fluorescent material coating process.
Background technology
At present, first LED fluorescent material mix with glue conventionally, then drips glue and be coated on LED surface, taking blue-ray LED as example, after blue light light emits from LED, part blue light light and fluorescent material effect are converted into gold-tinted, gold-tinted and blue light, what emit like this has just become white light. Due to the glue non-conductor of heat often, blue light is absorbed rear section by fluorescent material and is converted to heat energy, so just there will be glue aging, after fluorescent material is heated, luminous efficiency reduces, the problem of the aspects such as colour temperature drift, the temperature of LED also can raise simultaneously, shortens the service life of LED. In addition, the light directly emitting from LED is very dazzling, often needs diffuse-reflective material to make light become soft, and in diffuse reflection process, the light splitting of diffuse-reflective material meeting absorbent portion, causes LED brightness step-down, also can raise the cost in LED lamp source simultaneously.
Therefore propose a kind of new LED fluorescent material coating process, can overcome the defect of existing encapsulation technology.
Summary of the invention
For the shortcoming of existing LED fluorescent powder packaging, an important component part in the whole LED fluorescent material application techniques scheme that the present invention proposes as inventor, a kind of LED fluorescent material coating process is provided, is applied to LED illumination, overcome the shortcoming of existing LED fluorescent powder packaging.
The present invention realizes like this, a kind of LED fluorescent material coating process, aluminum alloy surface is used as the reflecting surface of LED light source, aluminium alloy is through surface treatment, surface treatment comprises aluminium alloy anode oxide processing, nano-phosphor finishing processing, the filling processing of nano-phosphor and sealing of hole processing, and each step is described below:
Aluminium alloy anode oxide processing is divided into following steps, the first step, aluminum alloy surface polishing, second step, the processing of aluminum alloy surface roughening, the 3rd step, aluminum alloy surface anodic oxidation, the 4th step, aluminum alloy surface activation processing, the polishing of described first step aluminum alloy surface is using aluminium alloy as anode, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, and the temperature of the mixed solution of perchloric acid and ethanol maintains below 10 degrees Celsius by refrigeration system, and the time of aluminum alloy surface polishing is in 60 seconds; The processing of described second step aluminum alloy surface roughening is the mixed liquor of aluminium alloy being put into NaOH, water and ethanol, and the temperature of this mixed solution maintains below 20 degrees Celsius by refrigeration system; Described the 3rd step aluminum alloy surface anodic oxidation is using aluminium alloy as anode; put into the mixed solution of phosphoric acid, water and ethanol; anode voltage is 120 volts to 250 volts, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains below 10 degrees Celsius by refrigeration system; Described the 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in coupling agent, and the temperature of coupling agent maintains between 80 degrees Celsius to 120 degrees Celsius.
Nano-phosphor finishing processing is that nano-phosphor and coupling agent are mixed, the mass ratio of nano-phosphor and coupling agent is 100 to 5 to 100 to 1, in mixed process, the temperature of coupling agent is between 80 degrees Celsius to 120 degrees Celsius, the time of mixing is 1 hour to 24 hours, processes for 30 seconds to 300 seconds having under hyperacoustic environment.
The filling processing of nano-phosphor is that the aluminium alloy that after nano-phosphor finishing is processed, the nano-phosphor that obtains and above-mentioned aluminum alloy surface processing obtain mixes, the frequency of carrying out ultrasonic wave processing under the environment of the ultrasonic powers of every cubic metre 30 watts to 200 watts be 60kHz to 80kHz, the processing time is 300 seconds to 1000 seconds.
Sealing of hole processing is that filling nano-phosphor aluminium alloy after treatment is carried out to sealing of hole processing, the parameter of sealing of hole processing is, temperature is 80 degrees Celsius to 100 degrees Celsius, and air pressure is that 1 atmosphere is pressed onto 5 atmospheric pressure, the volumetric concentration of steam is 30% to 50%, and the processing time is 30 minutes to 60 minutes.
Better, described aluminum alloy surface is converted to gold-tinted by the blue light of LED transmitting through the transformation part of described nano-phosphor as diffuse surface, and gold-tinted and blue light become white light.
Know-why of the present invention: make aluminum alloy surface occur mirror effect by polishing, be conducive to the reflection of light, by the immersion of sodium hydroxide solution, make aluminum alloy surface within the scope of micro-meter scale, occur coarse surface, form diffuse surface, by anodizing technology aluminium alloy show produce hole diameter in 200 nanometers to 350 nanometers, the degree of depth of hole is in 300 nanometers to 3 micron, after aluminum alloy surface activation processing, nano aperture inwall will adhere to coupling agent; The effect of nano-phosphor finishing processing is to make coupled dose of parcel of nano-phosphor; In nano-phosphor pouring process, nano-phosphor enters in the nano aperture of aluminum alloy surface, and under the help of coupling agent, nano-phosphor is attracted in the nano aperture of aluminum alloy surface; By sealing of hole processing, make the hole sealing of the pellumina of aluminum alloy surface, and then sealing nano-phosphor. Process so later aluminum alloy surface, as reflecting surface, the blue light of LED transmitting is converted to gold-tinted through the transformation part of nano-phosphor, after aluminum alloy surface reflection, gold-tinted and blue light become white light.
Creativeness of the present invention is:
A, fluorescent material are away from LED light emitting source, and the temperature of fluorescent material work approaches room temperature, and the job stability of fluorescent material improves, and the life-span increases;
B, LED light-emitting area do not have stopping of fluorescent material, and the heat dispersion of LED improves;
C, fluorescent material composition can be different at the different parts of aluminum alloy surface, can realize like this light of same LED light source generation multiple color.
D, aluminum alloy surface is processed and the application of fluorescent material combines, aluminium alloy can provide good heat radiation for fluorescent material, can provide better design for ultra high power LED light source.
E, aluminum alloy surface be through roughening processing, and emission of light becomes and diffuses, and has avoided dazzling situation, has controlled the cost of LED lamp simultaneously.
Technique effect of the present invention is: fluorescent material is no longer the obstruction of LED heat radiation, fluorescent material also can not worked at higher temperature simultaneously, be the preferred technical scheme of one of ultra high power LED light source, aluminum alloy surface can realize diffuse reflection, has avoided dazzling situation.
Brief description of the drawings
Fig. 1 is the schematic cross-section of the aluminum alloy surface after the aluminum alloy surface anodized of the embodiment of the present invention.
Fig. 2 is the schematic cross-section of the aluminum alloy surface after the aluminum alloy surface activation processing of the embodiment of the present invention.
Fig. 3 is the schematic cross-section of the filling aluminum alloy surface after treatment of nano-phosphor of the embodiment of the present invention.
Fig. 4 is the schematic cross-section of the sealing of hole aluminum alloy surface after treatment of the embodiment of the present invention.
Fig. 5 is the schematic diagram of the aluminum alloy surface reflection LED light source of the embodiment of the present invention.
Description of reference numerals: 1, aluminium alloy; 10, aluminum alloy surface; 11, porous anodic aluminium oxide; 21, the coupling agent on porous anodic aluminium oxide surface; 50, nano-phosphor; 51, the coupling agent on nano-phosphor surface; 31, the blue light of LED transmitting; 32, mixed light; 41, LED; 42, LED support.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with above-mentioned drawings and Examples, the present invention is described in further detail.
The embodiment of the present invention is as shown in Figures 1 to 5: the present invention realizes like this, a kind of LED fluorescent material coating process, aluminum alloy surface is used as the reflecting surface of LED light source, aluminium alloy is through surface treatment, surface treatment comprises aluminium alloy anode oxide processing, nano-phosphor finishing processing, the filling processing of nano-phosphor and sealing of hole processing, and each step is described below.
Aluminium alloy anode oxide processing is divided into following steps, the first step, aluminum alloy surface polishing, second step, the processing of aluminum alloy surface roughening, the 3rd step, aluminum alloy surface anodic oxidation, the 4th step, aluminum alloy surface activation processing, the polishing of first step aluminum alloy surface is using aluminium alloy as anode, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, and the temperature of the mixed solution of perchloric acid and ethanol maintains 4 degrees Celsius by refrigeration system, and the time of aluminum alloy surface polishing is 30 seconds; The processing of second step aluminum alloy surface roughening is the mixed liquor of aluminium alloy being put into NaOH, water and ethanol, the temperature of this mixed liquor maintains 15 degrees Celsius by refrigeration system, wherein in the mixed liquor of NaOH, water and ethanol, the mass concentration of NaOH is 15%, and the mass concentration of ethanol is 30%; The 3rd step aluminum alloy surface anodic oxidation is using aluminium alloy as anode, put into the mixed solution of phosphoric acid, water and ethanol, anode voltage is 200 volts, the mass concentration of phosphoric acid is 1%, and the mass concentration of ethanol is 50%, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains 4 degrees Celsius by refrigeration system, anodizing time is 30 minutes, as shown in Figure 1, the hole diameter of the porous anodic aluminium oxide 11 of the aluminum alloy surface 10 obtaining is about 350 nanometers, and the degree of depth is 2 microns; The 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in coupling agent, the temperature of coupling agent maintains 90 degrees Celsius, coupling agent is monoalkoxytitanates, and as shown in Figure 2, the coupling agent 21 on porous anodic aluminium oxide surface is attached to porous anodic aluminium oxide 11 surfaces.
Nano-phosphor finishing processing is that nano-phosphor and coupling agent are mixed, the mass ratio of nano-phosphor and coupling agent is 100 to 2, in mixed process, the temperature of coupling agent is 90 degrees Celsius, the time of mixing is 3 hours, processed for 100 seconds having under hyperacoustic environment, coupling agent is monoalkoxytitanates.
The filling processing of nano-phosphor is that the aluminium alloy that the nano-phosphor that obtains after above-mentioned nano-phosphor finishing is processed and aluminum alloy surface processing obtain mixes, the frequency of carrying out ultrasonic wave processing under the environment of the ultrasonic powers of 100 watts every cubic metre is 70kHz, processing time is 500 seconds, as shown in Figure 3, the surface of nano-phosphor 50 is wrapped up by the coupling agent 51 on nano-phosphor surface, by the coupled action of coupling agent, nano-phosphor 50 is adsorbed in the inside, cavity of porous anodic aluminium oxide 11.
Sealing of hole processing is that filling above-mentioned nano-phosphor aluminium alloy after treatment is carried out to sealing of hole processing, the parameter of sealing of hole processing is, environment temperature is 90 degrees Celsius, air pressure is 3 atmospheric pressure, the volumetric concentration of steam is 40%, and the processing time is 40 minutes, as shown in Figure 4, porous anodic aluminium oxide 11 is under water and effect, and the oxidized aluminium of hole of porous anodic aluminium oxide 11 seals.
As shown in Figure 4, LED41 is fixed on LED support 42, the light-emitting area of LED41 is towards aluminium alloy 1, and the surface of aluminium alloy 1 is converted to gold-tinted by the blue light 31 of LED41 transmitting through the transformation part of nano-phosphor as diffuse surface, and the mixed light 32 of gold-tinted and blue light is white light.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, for example, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a LED fluorescent material coating process, aluminum alloy surface is used as the reflecting surface of LED light source, it is characterized in that: described aluminium alloy is through surface treatment, surface treatment comprises aluminium alloy anode oxide processing, nano-phosphor finishing processing, the filling processing of nano-phosphor and sealing of hole processing, and each step is described below:
Described aluminium alloy anode oxide processing is divided into following steps, the first step, aluminum alloy surface polishing, second step, the processing of aluminum alloy surface roughening, the 3rd step, aluminum alloy surface anodic oxidation, the 4th step, aluminum alloy surface activation processing, the polishing of described first step aluminum alloy surface is using aluminium alloy as anode, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, the temperature of the mixed solution of perchloric acid and ethanol maintains below 10 degrees Celsius by refrigeration system, the time of aluminum alloy surface polishing is in 60 seconds, the processing of described second step aluminum alloy surface roughening is the mixed liquor of aluminium alloy being put into NaOH, water and ethanol, and the temperature of this mixed liquor maintains below 20 degrees Celsius by refrigeration system, described the 3rd step aluminum alloy surface anodic oxidation is using aluminium alloy as anode, put into the mixed solution of phosphoric acid, water and ethanol, anode voltage is 120 volts to 250 volts, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains below 10 degrees Celsius by refrigeration system, described the 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in coupling agent, and the temperature of coupling agent maintains between 80 degrees Celsius to 120 degrees Celsius,
Described nano-phosphor finishing processing is that nano-phosphor and coupling agent are mixed, the mass ratio of nano-phosphor and coupling agent is 100 to 5 to 100 to 1, in mixed process, the temperature of coupling agent is between 80 degrees Celsius to 120 degrees Celsius, the time of mixing is 1 hour to 24 hours, processes for 30 seconds to 300 seconds having under hyperacoustic environment;
The filling processing of described nano-phosphor is that the aluminium alloy that after nano-phosphor finishing is processed, the nano-phosphor that obtains and above-mentioned aluminum alloy surface processing obtain mixes, the frequency of carrying out ultrasonic wave processing under the environment of the ultrasonic powers of every cubic metre 30 watts to 200 watts be 60kHz to 80kHz, the processing time is 300 seconds to 1000 seconds;
Described sealing of hole processing is that filling nano-phosphor aluminium alloy after treatment is carried out to sealing of hole processing, the parameter of sealing of hole processing is, temperature is 80 degrees Celsius to 100 degrees Celsius, and air pressure is that 1 atmosphere is pressed onto 5 atmospheric pressure, the volumetric concentration of steam is 30% to 50%, and the processing time is 30 minutes to 60 minutes.
2. LED fluorescent material coating process according to claim 1, is characterized in that: described aluminum alloy surface is converted to gold-tinted by the blue light of LED transmitting through the transformation part of described nano-phosphor as diffuse surface, and gold-tinted and blue light become white light.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960016A (en) * | 2005-11-02 | 2007-05-09 | 西铁城电子股份有限公司 | Light emitting diode |
| CN101813254A (en) * | 2009-02-23 | 2010-08-25 | 优志旺电机株式会社 | Light supply apparatus |
| CN202633384U (en) * | 2012-04-26 | 2012-12-26 | 刘晓博 | Reflective fluorescent surface for LED illumination |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5393274B2 (en) * | 2009-06-10 | 2014-01-22 | 富士フイルム株式会社 | Fine structure and light emitting device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960016A (en) * | 2005-11-02 | 2007-05-09 | 西铁城电子股份有限公司 | Light emitting diode |
| CN101813254A (en) * | 2009-02-23 | 2010-08-25 | 优志旺电机株式会社 | Light supply apparatus |
| CN202633384U (en) * | 2012-04-26 | 2012-12-26 | 刘晓博 | Reflective fluorescent surface for LED illumination |
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