CN103078046A - White light-emitting diode (LED) and manufacturing method thereof - Google Patents
White light-emitting diode (LED) and manufacturing method thereof Download PDFInfo
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- CN103078046A CN103078046A CN2013100326853A CN201310032685A CN103078046A CN 103078046 A CN103078046 A CN 103078046A CN 2013100326853 A CN2013100326853 A CN 2013100326853A CN 201310032685 A CN201310032685 A CN 201310032685A CN 103078046 A CN103078046 A CN 103078046A
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Abstract
The invention discloses a white light-emitting diode (LED) and a manufacturing method thereof. The white LED comprises an insulating base, a bowl-shaped reflector and a blue LED chip, wherein the bowl-shaped reflector is arranged on the insulating base; a heat-conducting fin is arranged between the bowl-shaped reflector and the insulating base; the blue LED chip is fixed in the bowl-shaped reflector; two electrodes which connected with the blue LED chip are arranged on the insulating base; and silane functionalized carbon points cover electrode welding wires, the bowl-shaped reflector and the blue LED chip. Organic polyatomic acid is added into a silane liquid boiling and reflowing under the protection of nitrogen, so that the organic polyatomic acid is pyrolyzed and synthesized into the silane functionalized carbon points; the blue LED chip is fixed in the bowl-shaped reflector; and the silane functionalized carbon points are coated on the electrode welding wires, the bowl-shaped reflector and the blue LED chip. According to the white LED and the manufacturing method disclosed by the invention, the problems that the prior LED is low in color rendering property, narrow in color gamut, poor in stability and uniformity and the like are solved; and the light-emitting efficiency, stability in use and service life of the LED are increased.
Description
Technical field
The present invention relates to a kind of white light LEDs and preparation method thereof, excite silane-functionalized carbon to put a kind of white light LEDs of luminous manufacturing by blue-ray LED specifically, belong to technical field of semiconductor illumination.
Background technology
LED is a kind of New Solid light source, has energy-conservation, firm, environmental protection, an advantage such as the life-span is long and volume is little, and oneself becomes the study hotspot in the fields such as photoelectron, illumination.Wherein, white light LEDs has become the lighting source of a new generation, is widely used in the fields such as large display screen, Landscape Lighting, lamps for vehicle, backlight of LCD and decoration.
At present, white light LEDs mainly contains the three-primary color LED chip portfolio and the fluorescent material Wavelength-converting obtains, and the latter is the mainstream technology that obtains at present white light LEDs.As utilize InGaN blue-light LED chip excitation rare-earth fluorescent material, and perhaps exciting outer three primary colors fluorescent powder with the ultraviolet LED chip, the polychromatic light of generation mixes the formation white light.But lack red composition in the spectrum of current fluorescent RE powder, cause its color rendering index and luminous efficiency not high, and the traditional high temperature solid-state method of the common employing of the preparation of fluorescent material, synthesis temperature is high, causes cost high, is unfavorable for the commercialized development of LED.Simultaneously, the absorption of the different fluorescent material of three primary colors/excitation/emission spectrum, life-span, heat-resisting, chemical stability is inconsistent, chromaticity coordinates and colour gamut are difficult for modulation, and have reduced the LED fluorescent yield because of inhaling mutually alternately of light between the luminescent material, and the application of white light LEDs has been caused huge obstruction.Phosphor material powder is the opaque particle of solid of micron or tens micron dimensions, has the more serious problem that is in the light, and causes non-uniform light.And fluorescent material is scattered in the packaging plastic with the suspension-turbid liquid form when white light LEDs assembles, and has settlement issues, and it is inhomogeneous to cause fluorescent material to apply, and causes luminance nonuniformity.
Therefore, need that the novel cost of research and development one class is low, colour gamut is wide, color rendering index is high, good stability, transparent, homodisperse fluorescence transition material prepare the problem and shortage that white light LEDs exists to solve prior art.
Summary of the invention
Problem for existing white light LEDs technology exists the invention provides the luminous white light LEDs of a kind of blue-light excited carbon point, to solve that present white light LEDs color rendering is on the low side, colour gamut is partially narrow and the problem such as poor stability.The present invention also provides a kind of preparation method of this white light LEDs.
White light LEDs of the present invention, by the following technical solutions:
This white light LEDs, comprise insulator foot, bowl-type speculum and blue-light LED chip, the bowl-type speculum is arranged on the insulator foot, be provided with conducting strip between bowl-type speculum and the insulator foot, blue-light LED chip is fixed in the bowl-type speculum, be provided with two electrodes that are connected with blue-light LED chip on the insulator foot, be coated with silane-functionalized carbon point on electrode bonding wire, bowl-type speculum and the blue-light LED chip.
The emission wavelength of described blue-light LED chip is 420nm-480nm.
Described silane-functionalized carbon point is that organic multicomponent acid is added the functionalized carbon point that the synthetic silane covalent bond that obtains of organic multicomponent acid heat solution is modified; a kind of transparent, even, stable colloid luminescent material, avoided sedimentation, bad dispersibility, the particle of conventional fluorescent powder in packaging plastic inhomogeneous, absorb and see through the problems such as inhomogeneous.The advantages such as the equal temperature of the preparation of carbon point is lower, compares with the high temperature production technique of conventional fluorescent powder, and it is low to have operating temperature, and Production Time is short.
The emission wavelength of described silane-functionalized carbon point is from green glow 520nm to ruddiness 650nm, excite rubescent greenish-yellow smooth carbon to press the mixed silane-functionalized carbon point of different proportion by blue-ray LED, can obtain the white light LEDs of different colours, chromatic value, colour temperature, color rendering index.
The preparation method of above-mentioned white light LEDs may further comprise the steps:
(1) preparation silane-functionalized carbon point: make silane boiling reflux under nitrogen protection, the ratio of organic multicomponent acid with 0.002g/mL-5g/mL added in the silane liquid that refluxes, make the functionalized carbon point of organic multicomponent acid heat solution synthesizing silane covalent bonds, purifying namely obtains transparent, even, stable colloid luminescent material silane-functionalized carbon point after the cooling; The silane-functionalized carbon point that can obtain Yellow light-emitting low temperature, green glow and ruddiness by the control addition of citric acid and reaction time;
(2) at the fixing conducting strip of insulator foot, again the bowl-type speculum is fixed on the conducting strip;
(3) be that the blue-light LED chip of 420nm-480nm is fixed in the bowl-type speculum with emission wavelength, two electrodes placed respectively the both sides of insulator foot, and be in the same place with the N electrode welding by the P electrode of gold thread and blue-light LED chip respectively;
The 0.2 μ L-10 μ L silane-functionalized carbon point that (4) will prepare covers on tie point, gold thread, bowl-type speculum and the blue-light LED chip of two electrodes and gold thread, then place to heat under the baking oven 80-160 ° C to make silane-functionalized carbon point crosslinking curing in 1 hour-3 hours, namely obtain white light LEDs after the curing.
Silane-functionalized carbon point in the step (4) can be the silane-functionalized carbon point of Yellow light-emitting low temperature, can be glow, the mixture of any two kinds of arbitrary proportions in three kinds of silane-functionalized carbon points of green glow and gold-tinted, also can be glow, the mixture of three kinds of silane-functionalized carbon point arbitrary proportions of green glow and gold-tinted.
The present invention utilizes blue-light LED chip to excite carbon to put luminous preparation white light LEDs, solved that color rendering is on the low side in the present LED lighting technology, colour gamut is narrower and the problem such as poor stability, avoided the sedimentation in packaging plastic of conventional fluorescent powder, bad dispersibility, particle inhomogeneous, absorb and see through the problems such as inhomogeneous, the luminous efficiency, stability in use and the life-span that are conducive to improve LED.
Description of drawings
Fig. 1 is the structural representation of white light LEDs of the present invention.
Fig. 2 is the luminescent spectrum figure of the white light LEDs for preparing of the present invention.
Fig. 3 is the chromaticity coordinate figure of the white light LEDs for preparing of the present invention.
Wherein: 1, insulator foot, 2, conducting strip, 3, the bowl-type speculum, 4, gold thread, 5, blue-light LED chip, 6, silane-functionalized carbon point, 7, electrode.
Embodiment
As shown in Figure 1, white light LEDs of the present invention comprises insulator foot 1, bowl-type speculum 3 and blue-light LED chip 5, bowl-type speculum 3 is arranged on the insulator foot 1, be provided with conducting strip 2 between bowl-type speculum 3 and the insulator foot 1, blue-light LED chip is fixed in the bowl-type speculum 3, the both sides of insulator foot 1 respectively arrange 7, two electrodes 7 of an electrode and are connected with blue-light LED chip 5 by a gold thread 4 respectively, are coated with silane-functionalized carbon point 6 at gold thread 4, bowl-type speculum 3 and blue-light LED chip 5.Wherein the emission wavelength of blue-light LED chip 5 is 420nm-480nm.
The preparation method of above-mentioned white light LEDs may further comprise the steps:
(1) preparation silane-functionalized carbon point: make silane (as: γ-(β-aminoethyl) aminopropyl triethoxysilane; γ-(β-aminoethyl) aminopropyl trimethoxysilane; gamma-mercaptopropyltriethoxysilane; γ-mercaptopropyl trimethoxysilane; anilinomethyl triethoxysilane; anilinomethyl trimethoxy silane; γ-(2; 3-epoxy the third oxygen) propyl-triethoxysilicane etc.) boiling reflux under nitrogen protection; with organic multicomponent acid (as: tartaric acid; citric acid; butanedioic acid; Pyromellitic Acid; malic acid etc.) ratio with 0.002g/mL-5g/mL adds in the silane liquid that refluxes; make the functionalized carbon point of polyacid pyrolysis synthesizing silane covalent bonds, namely obtain transparent behind the cooling purifying; evenly; stable colloid luminescent material silane-functionalized carbon point.
Organic multicomponent acid adds the silane liquid that refluxes with the ratio of 0.002g/mL-0.05g/mL, reacts to obtain green light carbon point in 1 minute-60 minutes; Polyacid adds the silane liquid that refluxes with the ratio of 0.05g/mL-0.4g/mL, reacts to obtain Yellow light-emitting low temperature carbon point in 1 minute-90 minutes; Polyacid adds the silane liquid that refluxes with the ratio of 0.4g/mL-5g/mL, reacts 1 minute-100 minutes carbon points that obtain glowing.
(2) at the fixing conducting strip 2 of insulator foot 1, again bowl-type speculum 3 is fixed on the conducting strip 2.
(3) be that the blue-light LED chip of 420nm-480nm is fixed in the bowl-type speculum 3 with emission wavelength, two electrodes 7 placed respectively the both sides of insulator foot 1, and be in the same place with the N electrode welding by gold thread 4 and the P electrode of blue-light LED chip 5 respectively.
The 0.2 μ L-10 μ L silane-functionalized carbon point that (4) will prepare is coated on tie point, gold thread 4, bowl-type speculum 3 and the blue-light LED chip 5 of two electrodes and gold thread, tie point, gold thread 4, bowl-type speculum 3 and the blue-light LED chip 5 of two electrodes and gold thread are covered, then place to heat under the baking oven 80-160 ° C silane-functionalized carbon point is solidified, namely obtain white light LEDs after the curing.
Silane-functionalized carbon point in the step (4) can be the silane-functionalized carbon point of Yellow light-emitting low temperature, can be glow, the mixture of any two kinds of arbitrary proportions in three kinds of silane-functionalized carbon points of green glow and gold-tinted, also can be glow, the mixture of three kinds of silane-functionalized carbon point arbitrary proportions of green glow and gold-tinted.
Wherein, adopt the luminescent spectrum figure send the white light LEDs that the silane-functionalized carbon point of gold-tinted and blue-light LED chip that emission wavelength is 460nm obtain and chromaticity coordinate figure as shown in Figures 2 and 3.
Claims (8)
1. white light LEDs, comprise insulator foot, bowl-type speculum and blue-light LED chip, it is characterized in that: the bowl-type speculum is arranged on the insulator foot, be provided with conducting strip between bowl-type speculum and the insulator foot, blue-light LED chip is fixed in the bowl-type speculum, be provided with two electrodes that are connected with blue-light LED chip on the insulator foot, be coated with silane-functionalized carbon point on electrode bonding wire, bowl-type speculum and the blue-light LED chip.
2. white light LEDs according to claim 1, it is characterized in that: the emission wavelength of described blue-light LED chip is 420nm-480nm.
3. white light LEDs according to claim 1 is characterized in that: described silane-functionalized carbon point is that organic multicomponent acid is added the functionalized carbon point that the synthetic silane covalent bond that obtains of organic multicomponent acid heat solution is modified.
4. the preparation method of the described white light LEDs of claim 1 is characterized in that: may further comprise the steps:
(1) ratio of organic multicomponent acid with 0.002g/mL-5g/mL added in the silane liquid that refluxes, the functionalized carbon point that organic multicomponent acid heat solution synthesizing silane covalent bond is modified namely obtains silane-functionalized carbon point behind the cooling purifying;
(2) at the fixing conducting strip of insulator foot, again the bowl-type speculum is fixed on the conducting strip;
(3) be that the blue-light LED chip of 420nm-480nm is fixed in the bowl-type speculum with emission wavelength, two electrodes placed respectively the both sides of insulator foot, and be in the same place with the N electrode welding by the P electrode of gold thread and blue-light LED chip respectively;
The 0.2 μ L-10 μ L silane-functionalized carbon point that (4) will prepare covers on tie point, gold thread, bowl-type speculum and the blue-light LED chip of two electrodes and gold thread, then place to heat under the baking oven 80-160 ° C to make silane-functionalized carbon point crosslinking curing in 1-3 hour, namely obtain white light LEDs after the curing.
5. the preparation method of white light LEDs according to claim 4, it is characterized in that: organic multicomponent acid adds the silane liquid that refluxes with the ratio of 0.002g/mL-0.05g/mL in the described step (1), reacts to obtain green light silane-functionalized carbon point in 1 minute-60 minutes.
6. the preparation method of white light LEDs according to claim 4 is characterized in that: organic multicomponent acid adds the silane liquid that refluxes with the ratio of 0.05g/mL-0.4g/mL in the described step (1), reacts to obtain Yellow light-emitting low temperature silane-functionalized carbon point in 1 minute-90 minutes.
7. the preparation method of white light LEDs according to claim 4 is characterized in that: organic multicomponent acid adds the silane liquid that refluxes with the ratio of 0.4g/mL-5g/mL in the described step (1), reacts 1 minute-100 minutes silane-functionalized carbon points that obtain glowing.
8. the preparation method of white light LEDs according to claim 4, it is characterized in that: the silane-functionalized carbon point in the described step (4) is the silane-functionalized carbon point of Yellow light-emitting low temperature, or glow, the mixture of any two kinds of arbitrary proportions in three kinds of silane-functionalized carbon points of green glow and gold-tinted, or glow, the mixture of three kinds of silane-functionalized carbon point arbitrary proportions of green glow and gold-tinted.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103338544A (en) * | 2013-06-30 | 2013-10-02 | 上海科润光电技术有限公司 | White electroluminescent device realized by carbon quantum dots |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070200133A1 (en) * | 2005-04-01 | 2007-08-30 | Akira Hashimoto | Led assembly and manufacturing method |
| CN102339937A (en) * | 2011-09-26 | 2012-02-01 | 南京工业大学 | White-light LED (Light-emitting Diode) manufactured by utilizing quantum-dot fluorescent powder and manufacturing method thereof |
| CN102403426A (en) * | 2011-12-09 | 2012-04-04 | 江苏康纳思光电科技有限公司 | Method for manufacturing white light LED with wide color gamut |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070200133A1 (en) * | 2005-04-01 | 2007-08-30 | Akira Hashimoto | Led assembly and manufacturing method |
| CN102339937A (en) * | 2011-09-26 | 2012-02-01 | 南京工业大学 | White-light LED (Light-emitting Diode) manufactured by utilizing quantum-dot fluorescent powder and manufacturing method thereof |
| CN102403426A (en) * | 2011-12-09 | 2012-04-04 | 江苏康纳思光电科技有限公司 | Method for manufacturing white light LED with wide color gamut |
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|---|
| ZHENG XIE, ET.AL: "Organic-Inorganic Hybrid Function Carbon Dot Gel Glasses", 《ADVANCED MATERIALS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338544A (en) * | 2013-06-30 | 2013-10-02 | 上海科润光电技术有限公司 | White electroluminescent device realized by carbon quantum dots |
| CN103338544B (en) * | 2013-06-30 | 2016-03-16 | 上海科润光电技术有限公司 | A kind of white electroluminescence device realized by carbon quantum dot |
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