CN103682044A - White light LED device with light transmission ceramic chip used as luminous body - Google Patents
White light LED device with light transmission ceramic chip used as luminous body Download PDFInfo
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- CN103682044A CN103682044A CN201310645307.2A CN201310645307A CN103682044A CN 103682044 A CN103682044 A CN 103682044A CN 201310645307 A CN201310645307 A CN 201310645307A CN 103682044 A CN103682044 A CN 103682044A
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- white light
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- 239000000919 ceramic Substances 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 title abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 239000002223 garnet Substances 0.000 claims description 17
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- RUQSMSKTBIPRRA-UHFFFAOYSA-N yttrium Chemical compound [Y].[Y] RUQSMSKTBIPRRA-UHFFFAOYSA-N 0.000 claims description 5
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000009877 rendering Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 description 20
- 230000005284 excitation Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 241001025261 Neoraja caerulea Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses a white light LED device with a light transmission ceramic chip used as a luminous body, and belongs to white light LED luminescent devices. The white light LED device comprises a light shield, the light transmission ceramic chip, a total internal reflection lens, a supporting body, a blue light chip and a cooling fin. The light shield, the light transmission ceramic chip, the total internal reflection lens, the supporting body, the blue light chip and the cooling fin are sequentially connected. Two electrodes of the blue light chip are welded to an aluminum substrate, the supporting body is arranged on the aluminum substrate where the blue light chip is placed in a sleeved mode, and the total internal reflection lens is placed above the blue light chip and is a free-form curved surface. The light transmission ceramic chip is fixed above the supporting body of the light transmission ceramic chip. By the adoption of the method, the performance of the luminous body for a white light LED can be greatly improved, and the manufactured white light LED device is high in light-out conversion efficiency, high in color rendering index, long in service life and adjustable in color temperature; luminous energy can be efficiently utilized, and the small-sized compactness of the lighting system is also guaranteed; the device is simple in structure, good in heat stability and long in service life.
Description
Technical field
The present invention relates to a kind of white light LED luminescent device, particularly a kind of light transparent ceramic sheet is as the white light LED part of luminous element.
Background technology
Under the demand of global energy-saving and emission-reduction, energy shortage and strengthening environmental protection, White-light LED illumination as after incandescent lamp, fluorescent lamp and high-voltage gas discharging light the 4th generation lighting source progressively replacing traditional lighting device.The technology of preparing of white light LEDs mainly contains three kinds at present: polychrome combined method, Multiple Quantum Well method and light transformation approach.Wherein light transformation approach, adopts light-converting material, and blue light (or purple light) conversion is produced to white light.Utilize blue led for basic light source, the luminous a part of blue light of blue led is used for to excitated fluorescent powder, make fluorescent material send green-yellow light or ruddiness and green glow, another part blue light transmits, and by the yellow-green light of fluorescent material or blue light red and green glow and transmission, forms white light.At present, the business-like white light LEDs product of adopting in this way becomes Developing mainstream, and fluorescent material mainly be take powdered form fluorescent material as main body.This method is mainly that the fluorescent material of rare earth doped luminescent material is scattered in the organic materials such as silica gel or epoxy resin, is then encapsulated on blue chip.By blue-light LED chip excitated fluorescent powder, obtain gold-tinted, with blue light and the yellow light mix of proper proportion, obtain white light.Yet, because of the intrinsic feature of powdered form fluorescent material itself, make current commercial LED have the following problem that is difficult to overcome: the uniformly dispersed difference of (1) fluorescent powder grain in organic material consequently affects the optical homogeneity of white light LED part.(2) poor heat stability of organic substrate, causes the degeneration of organic substrate and aging.For power type white light LED, its junction temperature is higher, and the heat conduction of fluorescent coating and heat dispersion are poor, thereby causes fluorescent material occurrence temperature quencher and aging, and the temperature quenching of fluorescent material will cause the reduction of luminous efficiency, thereby affect resulting devices performance and change photochromic light temperature.(3) light scattering of phosphor surface, has affected its luminous efficiency.(4) disappearance of the red composition of fluorescent material cannot realize the white light of low colour temperature and high color rendering index (CRI), causes colour temperature higher, not soft.(5) disappearance of the autonomous property right of commercial fluorescent material.The fluorescent material major part of using in the market comes from the countries such as Japan, the U.S., has greatly limited research and development and the production of China's fluorescent material.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of light conversion efficiency is high, color rendering index is high, the life-span is long, colour temperature the is adjustable light transparent ceramic sheet white light LED part as luminous element is provided.
The object of the present invention is achieved like this: light transparent ceramic sheet comprises as the white light LED part of luminous element: light shield, light transparent ceramic sheet, total internal reflection lens, supporting body, blue chip and fin; Light shield, light transparent ceramic sheet, total internal reflection lens, supporting body, blue chip and fin are linked in sequence; Two electrode weldings of blue chip are to aluminium base, and supporting body is enclosed within on the aluminium base at blue chip place, and total internal reflection lens is placed in blue chip top, and described total internal reflection lens is free form surface; Light transparent ceramic sheet is fixed on light transparent ceramic sheet supporting body top.
The composition material of described light transparent ceramic sheet is one or more in yttrium-aluminium-garnet, Luetcium aluminum garnet, yttrium yttrium aluminmiu garnet, yittrium oxide, luteium oxide or scandium oxide.
Distance between described blue chip and light transparent ceramic sheet is 2-5cm.
Beneficial effect, owing to having adopted such scheme, increase the middle distance of blue-light LED chip and ceramic luminous element, in total internal reflection optical lens remote fluorescence excitation structure, add secondary optical design, by total internal reflection lens, change long-range blue light paths, select the total internal reflection lens of free form surface, utilize geometric optics to control light trend, effectively collect the large-scale emergent light of LED, make the parallel outgoing of luminous energy and can be irradiated to fully on light transparent ceramic sheet, the utilance that has improved blue-ray LED exciting light, has improved fluorescent illuminant light conversion efficiency; Described lens transmission is 96%, and refractive index is greater than 1.5, and light that blue chip is sent is more and be incident upon uniformly on light transparent ceramic sheet.Adopt remote fluorescence excitation structure and add total internal reflection lens further to improve the utilance of exciting light.By above method, white light LEDs is very significantly improved by the performance of luminous element, prepares the white light LED part that light conversion efficiency is high, color rendering index is high, the life-span is long, colour temperature is adjustable; Both realize the efficient utilization of luminous energy, guaranteed again the small compact of illuminator.This device architecture is simple, Heat stability is good, long service life.
Accompanying drawing explanation
Fig. 1 is light transparent ceramic white-light LED structure figure.
In figure: 1, light shield; 2, light transparent ceramic sheet; 3, TIR lens; 4, supporting body; 5, blue chip; 6, fin.
Embodiment
Embodiment 1: light transparent ceramic sheet comprises as the white light LED part of luminous element: light shield 1, light transparent ceramic sheet 2, total internal reflection lens 3, supporting body 4, blue chip 5 and fin 6, and light shield 1, light transparent ceramic sheet 2, total internal reflection lens 3, supporting body 4, blue chip 5 and fin 6 are linked in sequence; Two electrode weldings of blue chip are to aluminium base, and supporting body is enclosed within on the aluminium base at blue chip place, and total internal reflection lens is placed in blue chip top, and described total internal reflection lens is free form surface; Light transparent ceramic sheet is fixed on light transparent ceramic sheet supporting body top, and utilizes glue to be fixed.
Described light transparent ceramic sheet material is yttrium-aluminium-garnet.
This white light LED part adopts remote fluorescence excitation structure, between blue chip 5 and light transparent ceramic sheet 3, increases the utilance that total reflection lens 4 increases exciting light; By blue chip 5 and light transparent ceramic sheet 3 2-5 cm separately, avoided problem in traditional LED light fixture the problem includes: unidirection luminous, easily cause dazzle, aperture, light decay and design limited problem.
Embodiment 2: described light transparent ceramic sheet material is Luetcium aluminum garnet.Other and embodiment 1 are together.
Embodiment 3: described light transparent ceramic sheet material is yttrium yttrium aluminmiu garnet.Other and embodiment 1 are together.
Embodiment 4: described light transparent ceramic sheet material is yittrium oxide.Other and embodiment 1 are together.
Embodiment 5: described light transparent ceramic sheet material is luteium oxide.Other and embodiment 1 are together.
Embodiment 6: described light transparent ceramic sheet material is scandium oxide.Other and embodiment 1 are together.
Embodiment 7: the composition material of described light transparent ceramic sheet is yttrium-aluminium-garnet, Luetcium aluminum garnet.Other and embodiment 1 are together.
Embodiment 8: the composition material of described light transparent ceramic sheet is yttrium-aluminium-garnet, Luetcium aluminum garnet, yttrium yttrium aluminmiu garnet.Other and embodiment 1 are together.
Embodiment 9: the composition material of described light transparent ceramic sheet is yttrium-aluminium-garnet, Luetcium aluminum garnet, yttrium yttrium aluminmiu garnet, yittrium oxide, luteium oxide and scandium oxide.Other and embodiment 1 are together.
Claims (3)
1. light transparent ceramic sheet, as a white light LED part for luminous element, is characterized in that: light transparent ceramic sheet comprises as the white light LED part of luminous element: light shield, light transparent ceramic sheet, total internal reflection lens, supporting body, blue chip and fin; Light shield, light transparent ceramic sheet, total internal reflection lens, supporting body, blue chip and fin are linked in sequence; Two electrode weldings of blue chip are to aluminium base, and supporting body is enclosed within on the aluminium base at blue chip place, and total internal reflection lens is placed in blue chip top, and described total internal reflection lens is free form surface; Light transparent ceramic sheet is fixed on light transparent ceramic sheet supporting body top.
2. the white light LED part as luminous element by light transparent ceramic sheet claimed in claim 1, is characterized in that: the composition material of described light transparent ceramic sheet is one or more in yttrium-aluminium-garnet, Luetcium aluminum garnet, yttrium yttrium aluminmiu garnet, yittrium oxide, luteium oxide or scandium oxide.
3. the white light LED part as luminous element by light transparent ceramic sheet claimed in claim 1, is characterized in that: the distance between described blue chip and light transparent ceramic sheet is 2-5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645307.2A CN103682044A (en) | 2013-12-05 | 2013-12-05 | White light LED device with light transmission ceramic chip used as luminous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645307.2A CN103682044A (en) | 2013-12-05 | 2013-12-05 | White light LED device with light transmission ceramic chip used as luminous body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103682044A true CN103682044A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310645307.2A Pending CN103682044A (en) | 2013-12-05 | 2013-12-05 | White light LED device with light transmission ceramic chip used as luminous body |
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| Country | Link |
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| CN (1) | CN103682044A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065933A (en) * | 2015-07-29 | 2015-11-18 | 福建师范大学 | Large-angle light-emitting LED lamp and work method thereof |
| CN108458262A (en) * | 2018-04-13 | 2018-08-28 | 调调（北京）科技有限公司 | The lighting system and method for comprehensive a variety of lighting effects |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136541A (en) * | 2010-01-22 | 2011-07-27 | 中国科学院上海硅酸盐研究所 | Transparent ceramic white-light LED (Light-Emitting Diode) device |
-
2013
- 2013-12-05 CN CN201310645307.2A patent/CN103682044A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136541A (en) * | 2010-01-22 | 2011-07-27 | 中国科学院上海硅酸盐研究所 | Transparent ceramic white-light LED (Light-Emitting Diode) device |
Non-Patent Citations (1)
| Title |
|---|
| 胡成华等: "基于ＬＥＤ光源的ＴＩＲ透镜的优化设计", 《ＳＥＭＩＣＯＮＤＵＣＴＯＲ ＯＰＴＯＥＬＥＣＴＲＯＮＩＣＳ》, vol. 33, no. 2, 30 April 2012 (2012-04-30), pages 184 - 187 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065933A (en) * | 2015-07-29 | 2015-11-18 | 福建师范大学 | Large-angle light-emitting LED lamp and work method thereof |
| CN108458262A (en) * | 2018-04-13 | 2018-08-28 | 调调（北京）科技有限公司 | The lighting system and method for comprehensive a variety of lighting effects |
| CN108458262B (en) * | 2018-04-13 | 2024-09-10 | 调调（北京）科技有限公司 | Lighting system and method for integrating multiple light effects |
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Application publication date: 20140326 |