CN103288346A - Microcrystalline glass substrate formula of light emitting diode, and preparation method - Google Patents
Microcrystalline glass substrate formula of light emitting diode, and preparation method Download PDFInfo
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- CN103288346A CN103288346A CN2013101506285A CN201310150628A CN103288346A CN 103288346 A CN103288346 A CN 103288346A CN 2013101506285 A CN2013101506285 A CN 2013101506285A CN 201310150628 A CN201310150628 A CN 201310150628A CN 103288346 A CN103288346 A CN 103288346A
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Abstract
The invention relates to a microcrystalline glass substrate formula of a light emitting diode. The raw materials comprise 65-90 wt% of glass powder and 10-35 wt% of an inorganic filler. By employing microcrystalline glass which is a novel material as a raw material of a substrate, the heat radiation problem of LED lamps is solved efficiently; by adding an additive with a high refractive index into the formula, the luminous efficiency is more ideal; and the preparation technology is extremely simple, the cost is low, the usage cost cannot be increased and the lamps have a longer using period.
Description
Technical field
The present invention relates to prescription and the technology of light emitting diode base plate, particularly relate to a kind of devitrified glass that adopts as the prescription of raw-material light emitting diode base plate.
Background technology
Along with the continuous attention of people to energy-conserving and environment-protective, the LED lamp has progressively replaced the blank sheet of paper bulb, and the every aspect in being penetrated into work and having lived, particularly high brightness and high-efficiency LED lamp are widely used in backlight, fields such as illumination, this high brightness and high-efficiency LED lamp in use can produce a problem, heating is serious and dispel the heat undesirable, the long-time thermal accumlation that uses damages light fixture easily, reduce the work-ing life of light fixture, increase client's use cost, make troubles to live and work, the parts that easily produce high temperature mainly are the substrates of LED lamp, adopt which kind of material just to seem particularly important as the material of substrate, in order to overcome this difficult problem, the research staff also proposes a lot of type materials and solves this problem, for example ceramic, metal etc., the substrate of above-mentioned materials is also announced on the net at Chinese patent simultaneously, but the substrate of these materials can not solve this contradiction fully, heating problem can not effectively solve, so the present invention proposes a kind of new material and substitutes traditional old material, can extraordinaryly address this problem, assurance has high emissivity, in the time of high-insulativity, also possesses high heat conductance, heating is not at the obstacle that becomes the development of LED lamp and advance, and with low cost, can not increase enterprise and user's burden.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of crystallite glass substrate prescription of photodiode is proposed, its raw material is formed and is comprised glass powder and mineral filler, the shared score of described glass powder is 65～90 wt.%, the shared score of described mineral filler is 10～35 wt.%, and the composition of described glass powder is composed as follows: Bi
2O
340～75 wt.%, SiO
21.5～5 wt.%, B
2O
38.5～15 wt.%, (SiO
2+ B
2O
3+ Bi
2O
3)=50～90 wt.%, Al
2O
35～15 wt.%, ZnO 0～10 wt.%, (Al
2O
3+ ZnO)=5 ~ 15 wt.%, CuO 0～0.5 wt.%, Fe
2O
30～0.5 wt.%, (CuO+Fe
2O
3)=0～0.5 wt.%, TiO
20～4.5 wt.%, Y
2O
30～4.5 wt.%, La
2O
30～4.5 wt.%, (TiO
2+ Y
2O
3+ La
2O
3)=0.5 ~ 4.5 wt.%, CeO
20～0.5 wt.%, Er
2O
30～0.5 wt.%, Co
2O
30～0.5 wt.%, CaO 0～15 wt.%, MgO 0～18 wt.%, BaO 2～20 wt.%, (CaO+MgO+BaO)=2 ~ 30 wt.%.
As improvement of the present invention, described mineral filler comprises refractive power mineral filler and heat conduction inorganic filler.
As to further improvement of the present invention, described refractive power mineral filler accounts for 5～10 wt.% of total score, and described inorganic heat conductive filler accounts for 5～25 wt.% of total score.
As to further improvement of the present invention, described refractive power mineral filler is blue mineral Co (AlO2) 2.
As to further improvement of the present invention, described refractive power mineral filler is green mineral, and described green mineral are CoTiO or CoCrO.
As to further improvement of the present invention, described heat conduction inorganic filler is AlN, Si, Al2O3 one or more mixing wherein.
A kind of preparation method who utilizes above-mentioned prescription to produce crystallite glass substrate, step comprises: after the preparation of (1) glass powder is finished by above-mentioned formulated, in heating installation, melt, clarification and homogenization, wherein temperature control is in 900～1000 ℃ of scopes, time is 1.5～2.5 h, finish found after, with the glass metal quick cooling, cooled glass frit is broken into largest particle below 100 μ m; (2) preparation granulation powder mixes glass powder and the mineral filler that step 1 obtains by proportioning, the binding agent that adds 8～10 wt.%, stirring makes its granularity in 100～250 μ m, and caking agent is the aqueous solution that contains 5～8 wt.% methylcellulose gum, it is wherein any to contain the aqueous solution of 3～5 wt.% polyvinyl alcohol or contain the alcoholic solution of 1～5 wt.% polyethylene carboxylic butyraldehyde; (3) compression molding is molded into needed shape with the granulation powder that step 2 obtains, and satisfies service requirements.
Beneficial effect of the present invention is: adopt this type material of devitrified glass as the starting material of substrate, can effectively solve the problem of the heating of LED lamp and heat radiation, and in prescription, increase the additive of high refractive index, luminous efficiency is better, and preparation technology is very simple, with low cost, can not increase use cost, the light fixture life cycle is also longer.
Embodiment
Be further detailed below in conjunction with the present invention of embodiment.
A kind of crystallite glass substrate prescription of photodiode, its raw material is formed and is comprised glass powder and mineral filler, and the shared score of described glass powder is 65～90 wt.%, and the shared score of described mineral filler is 10～35 wt.%, and the composition of described glass powder is composed as follows: Bi
2O
340～75 wt.%, SiO
21.5～5 wt.%, B
2O
38.5～15 wt.%, (SiO
2+ B
2O
3+ Bi
2O
3)=50～90 wt.%, Al
2O
35～15 wt.%, ZnO 0～10 wt.%, (Al
2O
3+ ZnO)=5 ~ 15 wt.%, CuO 0～0.5 wt.%, Fe
2O
30～0.5 wt.%, (CuO+Fe
2O
3)=0～0.5 wt.%, TiO
20～4.5 wt.%, Y
2O
30～4.5 wt.%, La
2O
30～4.5 wt.%, (TiO
2+ Y
2O
3+ La
2O
3)=0.5 ~ 4.5 wt.%, CeO
20～0.5 wt.%, Er
2O
30～0.5 wt.%, Co
2O
30～0.5 wt.%, CaO 0～15 wt.%, MgO 0～18 wt.%, BaO 2～20 wt.%, (CaO+MgO+BaO)=2 ~ 30 wt.%, in the above-mentioned recipe ingredient, SiO2 is the main moiety of silicate glass, can improve folding strength and the acid resistance of glass, it is the present invention's requisite composition of filling a prescription, content is in 1.5～5 wt.% scopes, B2O3 is glass-former, it also is the indispensable composition of this prescription, content is in 8.5～15 wt.% scopes, Bi2O3 is glass-former with good conditionsi, be to realize high resistivity, the main component of low softening temperature, make substrate that better physicals be arranged, content is in 40～75 wt.% scopes, and other components also are very important, can guarantee that substrate has desirable physicals and chemical property, for example, CaO, MgO, BaO, these three kinds of components are used for reducing softening temperature, content is in 2 ~ 30 wt.% scopes, also has picture TiO2, La2O3 and Y2O3 are for the optics of regulating substrate and chemical property, and for example, a lot of tinting materials have been increased in the prescription, make in the glass illumination and send specific color, specifically need which kind of color to decide according to customer demand, increased several frequently seen coloring components in the above-mentioned prescription, comprise yellow CeO2, green CuO or Fe2O3, red Er2O3, blue Co2O3 etc.
Among the present invention, described mineral filler comprises refractive power mineral filler and heat conduction inorganic filler, these two kinds of fillers can make substrate have extraordinary emittance and thermal conductivity, luminous efficiency is higher, it is also better to dispel the heat, but both scores have certain influence to prescription, find with using by experiment, and the refractive power mineral filler accounts for 5～10 wt.% of total score, inorganic heat conductive filler accounts for 5～25 wt.% of total score for best.
Among the present invention, described refractive power mineral filler is green mineral or blue mineral, the composition of blue mineral is Co (AlO2) 2, and the composition of green mineral is CoTiO or CoCrO, blue and green is common color during we live, other color effects if desired can increase the mineral of other colors, satisfies more customer demands.
Among the present invention, described heat conduction inorganic filler is AlN, Si, Al2O3 one or more mixing wherein, adopting wherein, the filler of one or more mixing can make substrate have better heat conductivility, can discharge the heat of accumulation timely and effectively, can not use light fixture to exert an influence, the light fixture life cycle is also longer.
All by Test Summary and summarizing, statistic data is as shown in the table for above-mentioned these prescriptions and performance:
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Code name | G 50 | B 50 | R 50 | Y 80 | G 90 | B 90 | R 90 |
| SiO2+B2O3+Bi2O3 | 50 | 50 | 50 | 80 | 90 | 90 | 90 |
| Al2O3+ZnO | 15 | 15 | 15 | 10 | 5 | 5 | 5 |
| CaO+MgO+BaO | 30 | 30 | 30 | 9 | 2 | 2 | 2 |
| Green CuO+Fe2O3 | 0.5 | 0 | 0 | 0 | 0.5 | 0 | 0 |
| Yellow CeO2 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 |
| Blue Co2O3 | 0 | 0.5 | 0 | 0 | 0 | 0.5 | 0 |
| Red Er2O3 | 0 | 0 | 0.5 | 0 | 0 | 0 | 0.5 |
| (TiO2+Y2O3+La2O3) | 4.5 | 4.5 | 4.5 | 0.5 | 2.5 | 2.5 | 2.5 |
| Glass melting temperature | 1000 | 1000 | 1000 | 950 | 900 | 900 | 900 |
| Melting time | 1 | 1 | 1 | 1.5 | 2 | 2 | 2 |
| Glass transformation temperature | 472 | 469 | 476 | 460 | 435 | 438 | 443 |
| Glass transition temperature | 530 | 532 | 528 | 511 | 490 | 500 | 496 |
| The micritization temperature | 551 | 549 | 553 | 520 | 510 | 510 | 510 |
| Thermal expansivity | 106 | 108 | 107 | 91.5 | 89.21 | 88.74 | 89.1 |
| Specific refractory power | 1.95 | 1.98 | 2.03 | 2.07 | 2.7 | 2.8 | 2.277 |
| Thermal conductivity (W/ mK) | 3.36 | 3.39 | 3.37 | 4.10 | 4.58 | 4.67 | 4.59 |
| Ultimate compression strength | 38.05 | 37.68 | 38.1 | 26.98 | 15.27 | 15.18 | 15.48 |
The mineral filler that has increased simultaneously in the above-mentioned prescription has very large influence to the substrate performance equally, and the correlation test data are as shown in the table:
Comprehensive above-mentioned two testing datas can be found out, adopt this described component of filling a prescription, can make substrate have extraordinary physicals and chemical property, particularly refractive index and thermal conductivity, compare with traditional substrate, have comparatively significantly and improve, can very goodly solve two obstacles of its development of restriction in the LED lamp, this also will become the trend of LED lamp development from now on.
A kind of preparation method who utilizes above-mentioned prescription to produce crystallite glass substrate, step comprises: after the preparation of (1) glass powder is finished by above-mentioned formulated, in heating installation, melt, clarification and homogenization, wherein temperature control is in 900～1000 ℃ of scopes, time is 1.5～2.5 h, finish found after, with the glass metal quick cooling, cooled glass frit is broken into largest particle below 100 μ m; (2) preparation granulation powder mixes glass powder and the mineral filler that step 1 obtains by proportioning, the binding agent that adds 8～10 wt.%, stirring makes its granularity in 100～250 μ m, and caking agent is the aqueous solution that contains 5～8 wt.% methylcellulose gum, it is wherein any to contain the aqueous solution of 3～5 wt.% polyvinyl alcohol or contain the alcoholic solution of 1～5 wt.% polyethylene carboxylic butyraldehyde; (3) compression molding is molded into needed shape with the granulation powder that step 2 obtains, and satisfies service requirements.
Above-mentioned preparation method is very simple, does not need the cost of complex apparatus input and great number to drop into, and can not increase business burden and product cost.
Claims (7)
1. the crystallite glass substrate prescription of a photodiode, it is characterized in that: its raw material is formed and is comprised glass powder and mineral filler, the shared score of described glass powder is 65～90 wt.%, and the shared score of described mineral filler is 10～35 wt.%, and the composition of described glass powder is composed as follows: Bi
2O
340～75 wt.%, SiO
21.5～5 wt.%, B
2O
38.5～15 wt.%, (SiO
2+ B
2O
3+ Bi
2O
3)=50～90 wt.%, Al
2O
35～15 wt.%, ZnO 0～10 wt.%, (Al
2O
3+ ZnO)=5 ~ 15 wt.%, CuO 0～0.5 wt.%, Fe
2O
30～0.5 wt.%, (CuO+Fe
2O
3)=0～0.5 wt.%, TiO
20～4.5 wt.%, Y
2O
30～4.5 wt.%, La
2O
30～4.5 wt.%, (TiO
2+ Y
2O
3+ La
2O
3)=0.5 ~ 4.5 wt.%, CeO
20～0.5 wt.%, Er
2O
30～0.5 wt.%, Co
2O
30～0.5 wt.%, CaO 0～15 wt.%, MgO 0～18 wt.%, BaO 2～20 wt.%, (CaO+MgO+BaO)=2 ~ 30 wt.%.
2. the crystallite glass substrate prescription of a kind of photodiode according to claim 1, it is characterized in that: described mineral filler comprises refractive power mineral filler and heat conduction inorganic filler.
3. the crystallite glass substrate prescription of a kind of photodiode according to claim 2, it is characterized in that: described refractive power mineral filler accounts for 5～10 wt.% of total score, and described inorganic heat conductive filler accounts for 5～25 wt.% of total score.
4. the crystallite glass substrate prescription of a kind of photodiode according to claim 2, it is characterized in that: described refractive power mineral filler is blue mineral Co (AlO2) 2.
5. the crystallite glass substrate prescription of a kind of photodiode according to claim 2, it is characterized in that: described refractive power mineral filler is green mineral, described green mineral are CoTiO or CoCrO.
6. the crystallite glass substrate prescription of a kind of photodiode according to claim 2, it is characterized in that: described heat conduction inorganic filler is AlN, Si, Al2O3 one or more mixing wherein.
7. preparation method who utilizes above-mentioned prescription to produce crystallite glass substrate is characterized in that:
Step comprises: after the preparation of (1) glass powder is finished by above-mentioned formulated, in heating installation, melt, clarification and homogenization, wherein temperature control is in 900～1000 ℃ of scopes, time is 1.5～2.5 h, finish found after, with the glass metal quick cooling, cooled glass frit is broken into largest particle below 100 μ m; (2) preparation granulation powder mixes glass powder and the mineral filler that step 1 obtains by proportioning, the binding agent that adds 8～10 wt.%, stirring makes its granularity in 100～250 μ m, and caking agent is the aqueous solution that contains 5～8 wt.% methylcellulose gum, it is wherein any to contain the aqueous solution of 3～5 wt.% polyvinyl alcohol or contain the alcoholic solution of 1～5 wt.% polyethylene carboxylic butyraldehyde; (3) compression molding is molded into needed shape with the granulation powder that step 2 obtains, and satisfies service requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101506285A CN103288346A (en) | 2013-04-27 | 2013-04-27 | Microcrystalline glass substrate formula of light emitting diode, and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101506285A CN103288346A (en) | 2013-04-27 | 2013-04-27 | Microcrystalline glass substrate formula of light emitting diode, and preparation method |
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|---|---|
| CN103288346A true CN103288346A (en) | 2013-09-11 |
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|---|---|---|---|
| CN2013101506285A Pending CN103288346A (en) | 2013-04-27 | 2013-04-27 | Microcrystalline glass substrate formula of light emitting diode, and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108164132A (en) * | 2017-12-26 | 2018-06-15 | 陕西科技大学 | A kind of preparation method for mixing yttrium jaundice green light glass |
| CN113195423A (en) * | 2018-12-20 | 2021-07-30 | 欧罗克拉公司 | Copper aluminoborosilicate glass and use thereof |
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| CN101784637A (en) * | 2007-08-31 | 2010-07-21 | 住友化学株式会社 | Fluor |
| CN102836642A (en) * | 2011-06-22 | 2012-12-26 | 南京髙谦功能材料科技有限公司 | Preparation method of porous ceramic-metal composite film material |
| WO2013054639A1 (en) * | 2011-10-13 | 2013-04-18 | セントラル硝子株式会社 | Bismuth-containing glass composition |
-
2013
- 2013-04-27 CN CN2013101506285A patent/CN103288346A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784637A (en) * | 2007-08-31 | 2010-07-21 | 住友化学株式会社 | Fluor |
| CN102836642A (en) * | 2011-06-22 | 2012-12-26 | 南京髙谦功能材料科技有限公司 | Preparation method of porous ceramic-metal composite film material |
| WO2013054639A1 (en) * | 2011-10-13 | 2013-04-18 | セントラル硝子株式会社 | Bismuth-containing glass composition |
Non-Patent Citations (2)
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|---|
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| 王承遇等: "《玻璃表面装饰》", 31 January 2011, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108164132A (en) * | 2017-12-26 | 2018-06-15 | 陕西科技大学 | A kind of preparation method for mixing yttrium jaundice green light glass |
| CN108164132B (en) * | 2017-12-26 | 2020-11-06 | 陕西科技大学 | Preparation method of yttrium-doped yellow green light-emitting glass |
| CN113195423A (en) * | 2018-12-20 | 2021-07-30 | 欧罗克拉公司 | Copper aluminoborosilicate glass and use thereof |
| CN113195423B (en) * | 2018-12-20 | 2023-04-11 | 欧罗克拉公司 | Copper aluminoborosilicate glass and use thereof |
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Application publication date: 20130911 |