CN102709450A - Dimmable COB (chip on board) light source module - Google Patents
Dimmable COB (chip on board) light source module Download PDFInfo
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- CN102709450A CN102709450A CN2012100701197A CN201210070119A CN102709450A CN 102709450 A CN102709450 A CN 102709450A CN 2012100701197 A CN2012100701197 A CN 2012100701197A CN 201210070119 A CN201210070119 A CN 201210070119A CN 102709450 A CN102709450 A CN 102709450A
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Abstract
The invention discloses a dimmable COB (chip on board) light source module which comprises a substrate with an installation groove, a chip array arranged in the installation groove, a packaging housing, a fence, first fluorescent powder adhesives and second fluorescent powder adhesives. The fence is arranged on the substrate and separates the chip array in the installation groove into multiple light source areas. Any one of the first fluorescent powder adhesives and the second fluorescent powder adhesives is filled into the light source areas. The dimmable COB light source module solves the technical problem of keeping uniformity between color temperature and color purity in a lighting area of an LED light source. By the aid of the dimmable COB light source module, continuous light dimming of blackbody radiance curves of the chromatic diagram of CIE (commission international eclairage)-1931 is realized, dimming range of the LED light source is broadened, and meanwhile, uniformity between color temperature and color purity in the lighting area of the LED light source is guaranteed.
Description
Technical field
The present invention relates to a kind of led light source module, particularly a kind of tunable optical COB light source module.
Background technology
Current white light LEDs major part of producing is through at blue-ray LED (near-UV; Wavelength 450nm to 470nm) go up to cover that the faint yellow fluorescent coating of one deck processes, this yellow phosphor is normally processed in a kind of dense binder through being mixed in after claying into power YttriumAluminumGarnet (Ce3+:YAG) crystal of having mixed cerium.When led chip sends blue light, the part blue light just can be converted to the yellow light that is mainly of a spectrum broad (spectral centroid is about 580nm) very efficiently by this crystal.(in fact the YAG that mixes Ce of monocrystalline is regarded as scintillator more than phosphor.) because gold-tinted can stimulate ruddiness and green glow acceptor in the naked eyes, mix the blue light of LED itself again, it is seemed just as white light, and its color and luster often is known as " white of moonlight ".The method of this making white light LEDs is to be developed and be used on the production white light LEDs since 1996 by NichiaCorporation.If want the color of the yellowish coloured light of adjustment, available other rare earth metal Tb or gadolinium replace the cerium (Ce) that mixes among the Ce3+:YAG, even can accomplish with the mode of the part among the replacement YAG or whole aluminium.
Fast development along with semiconductor lighting; Light regulating technology receives increasing attention; At present more than all be applied to light regulating technology on the light fixture, for example desk lamp, bulb lamp etc., current the most frequently used light regulating technology basic scheme is: one or many red light chips and blue chip are encapsulated in the same support; Apply yellow fluorescent powder at chip surface then; When in use, supply power for red light chips separately, need only the size of current of regulating red light chips in the time of light modulation; The electric current that also can regulate blue chip that has, the ratio of ratio through regulating red light in the light source light spectrum or blue light just can realize the adjusting of colour temperature and chromaticity coordinates like this.In above light regulating technology scheme; Have distinct issues, that is exactly that the scope of light modulation is less and since at present the red light chips light region of being sent not on the black body radiation line of CIE-1931 chromatic diagram; The 2nd, have more greatly and depart from; When mixing adjusting, just only can in a very little zone, obtain satisfactory light like this, can't continue light modulation along the black body radiation line of CIE-1931 chromatic diagram with cold white light.
Also the someone adopts the LED combination of devices of organizing different spectrum on an aluminium base more, respectively organizes the power of LED through control and realizes photochromic adjusting.But there is defective in this mode, because during each LED all be a point-source of light, this causes the underbelly in the field of illumination to occur brightness ghost image and colourity ghost image easily, influences visual experience.
Summary of the invention
For addressing the above problem; The invention discloses a kind of tunable optical COB light source module; Through led chip being divided into independent light source region, and through in adjacent light source region, filling dissimilar phosphor gel, control through size of current to the light source region that is filled with the same kind phosphor gel; And then realize the colour temperature and the colorimetric purity of whole LED light source are regulated and control; Make tunable optical COB light source module realize blackbody radiance curve continuous light tuning, increased the dimming scope of led light source, also guaranteed the consistency of led light source colour temperature and colorimetric purity in the light area simultaneously at the CIE-1931 chromatic diagram.
Tunable optical COB light source module disclosed by the invention; Comprise the substrate that offers mounting groove, be arranged on chip array, package casing, fence, first phosphor gel and second phosphor gel in the mounting groove; Fence is arranged on the substrate; And mounting groove is drawn interior chip array divide some light source region, first phosphor gel and second phosphor gel are filled into respectively in each light source region, and each light source region is only filled any one in first phosphor gel or second phosphor gel.Tunable optical COB light source module disclosed by the invention is through being divided into different light source region with the chip array on the substrate; And fill dissimilar phosphor gel therein; And then regulate through the luminous intensity to the chip array of the light source region that is filled with different phosphor gel, can realize that the colour temperature and the colorimetric purity of whole LED light source light in irradiation area regulated, workable; Light source modular structure disclosed by the invention is simple; The difficulty of coating fluorescent powder glue is low, and is simple to operate, helps production cost is controlled.
A kind of improvement of tunable optical COB light source module disclosed by the invention is arranged on the blue-light LED chip that is of chip array in the mounting groove, and peak wavelength is 440nm-465nm.This improvement is set to blue-light LED chip through led chip; To realize that product sends a moon candoluminescence; And be filled with the luminous intensity of the light source region of dissimilar phosphor gel through adjusting, and then realize to the light source light area the moon candoluminescence colour temperature and colorimetric purity regulate.
Another of tunable optical COB light source module disclosed by the invention improved, and fills first phosphor gel and second phosphor gel in the adjacent light source region respectively, and the light source region that is filled with phosphor gel of the same race is non-conterminous.This improvement will be filled with the adjacent setting of light source region of dissimilar phosphor gel, help the mixing between the light wave of different wave length, make product be beneficial in use the colour temperature and the colorimetric purity of light source are regulated.
Another of tunable optical COB light source module disclosed by the invention improved, and the fluorescent material that mixes in first phosphor gel is a kind of of aluminate or silicate yellow fluorescent powder or two kinds of mixtures.This improvement is a fluorescent material through in first phosphor gel, adopting aluminate or silicate, has stable excellent luminescent properties, makes light source have good lighting effect.
Another of tunable optical COB light source module disclosed by the invention improved, and the fluorescent material that mixes in second phosphor gel is one or more and the silicate red fluorescence powder in aluminate yellow fluorescent powder, silicate yellow fluorescent powder, the nitride yellow fluorescent powder, one or more the mixture in the nitride red fluorescent powder.This improvement is adopted secondary colour fluorescent material in second phosphor gel, helps improving the toning effect and the ability of light source, improves the quality of product.
Another of tunable optical COB light source module disclosed by the invention improved, and do not have between the chip array in adjacent light source region to electrically connect.This improvement does not have electric connection between the chip array in adjacent light source region; Promptly be filled with nothing electric connection between two types the light source region of first phosphor gel and second phosphor gel respectively; The colour temperature of light source module and the controllability of colorimetric purity have been improved; Avoided influence each other, improved the dimming behavior of light source module the luminous intensity of the chip of two kinds of light source region.
Another of tunable optical COB light source module disclosed by the invention improved, and the connected mode between the chip array of light source region is parallel connection and/or series connection separately.The electric connection of parallel connection and/or series connection will be separately carried out in this improvement between the chip array of light source region; Promptly be filled with between the light source region of fluorescent material of same type of first phosphor gel or second phosphor gel and implement to electrically connect; Help the luminous intensity of the chip in the light source region is controlled; Reduced the complexity of equipment; Also help the consistency of the light source region luminous intensity that guarantees notification type simultaneously, guaranteed luminous stability and the consistency on colour temperature and colorimetric purity and light intensity of whole light source.
Another of tunable optical COB light source module disclosed by the invention improved, and fence surrounds the light source region that forms and is rectangle, and the limit of adjacent two light source region is the shared single-row fence or the fence of distance or and show the fence of spacing continuously side by side.This improvement will adopt fence that light source region is distinguished; Help in coating fluorescent powder glue, operating on it; Prevented that effectively dissimilar phosphor gel from mixing when applying; Influence the luminous mass of light source module, also reduced the difficulty of producing effectively through this setting simultaneously, guaranteed the quality stability of the light source module of batch process.
Another improvement of tunable optical COB light source module disclosed by the invention, light source region are rectangle, and rectangular width edge length is less than 1/4th of long edge lengths, and the length of broadside is greater than 1mm simultaneously.This improvement is disclosed through the light source region specification is provided with; And it is 1mm at least that the length of broadside is set to; Help guaranteeing that light source checks colors in the regulating power of gentle colorimetric purity; Reduce the production complicacy and the degree of difficulty of product, under the situation that guarantees product quality, control production cost of products effectively.
Tunable optical COB light source module disclosed by the invention; Through led chip being divided into independent light source region; And through in adjacent light source region, filling dissimilar phosphor gel, control through size of current, and then realize the colour temperature and the colorimetric purity of whole LED light source are regulated and control the light source region that is filled with the same kind phosphor gel; Make tunable optical COB light source module realize blackbody radiance curve continuous light tuning at the CIE-1931 chromatic diagram; Increased the dimming scope of led light source, also guaranteed the consistency of led light source colour temperature and colorimetric purity in the light area simultaneously, also structurally light source region has been set simultaneously; Help improving the toning ability of light source, also realized control production cost of products.
Description of drawings
The structural representation of the light source region of Fig. 1, tunable optical COB light source module disclosed by the invention;
The cross-sectional view of Fig. 2, tunable optical COB light source module disclosed by the invention;
Fig. 3, first phosphor gel disclosed by the invention and second phosphor gel are coated in independent luminous sign on the CIE1931 chromatic diagram on the chip respectively;
Fig. 4, first phosphor gel disclosed by the invention and second phosphor gel are coated in the sign of adjacent light source region mixed luminescence on the CIE1931 chromatic diagram on the chip simultaneously.
Accompanying drawing is indicated tabulation:
1, the luminous position on the CIE1931 chromatic diagram of first phosphor gel; 2, the luminous position on the CIE1931 chromatic diagram of second phosphor gel;
3, the blackbody radiance curve of CIE-1931 chromatic diagram; 4, the zone at the place of the light behind this COB tunable optical light source module mixed light;
5, substrate; 6, chip; 7, enclosing;
8, first phosphor gel; 9, second phosphor gel
Embodiment
Below in conjunction with accompanying drawing and embodiment, further illustrate the present invention, should understand following embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention.
Extremely shown in Figure 4 like Fig. 1; Tunable optical COB light source module disclosed by the invention; Comprise the substrate 5 that offers mounting groove, be arranged on chip 6 arrays, package casing, fence 7, first phosphor gel 8 and second phosphor gel 9 in the mounting groove; Fence 7 is arranged on the substrate 5; And mounting groove is drawn interior chip array divide some light source region, first phosphor gel 8 and second phosphor gel 9 are filled into respectively in each light source region, and each light source region is only filled any one in first phosphor gel 8 or second phosphor gel 9.Tunable optical COB light source module disclosed by the invention is through being divided into different light source region with the chip array on the substrate; And fill dissimilar phosphor gel therein; And then regulate through the luminous intensity to the chip array of the light source region that is filled with different phosphor gel, can realize that the colour temperature and the colorimetric purity of whole LED light source light in irradiation area regulated, workable; Light source modular structure disclosed by the invention is simple; The difficulty of coating fluorescent powder glue is low, and is simple to operate, helps production cost is controlled.
As a kind of preferred, what be arranged on chip array in the mounting groove is blue-light LED chip 6, and peak wavelength is 440nm-465nm.Be set to blue-light LED chip through led chip; To realize that product sends a moon candoluminescence; And be filled with the luminous intensity of the light source region of dissimilar phosphor gel through adjusting, and then realize to the light source light area the moon candoluminescence colour temperature and colorimetric purity regulate.
As a kind of preferred, fill first phosphor gel 8 and second phosphor gel 9 in the adjacent light source region respectively, the light source region that is filled with phosphor gel of the same race is non-conterminous.With the adjacent setting of the light source region that is filled with dissimilar phosphor gel, help the mixing between the light wave of different wave length, make product be beneficial in use the colour temperature and the colorimetric purity of light source are regulated.
As a kind of preferred, the fluorescent material that mixes in first phosphor gel 8 is a kind of of aluminate or silicate yellow fluorescent powder or two kinds of mixtures.Through in first phosphor gel, adopting aluminate or silicate is fluorescent material, has stable excellent luminescent properties, makes light source have good lighting effect.
As a kind of preferred, the fluorescent material that mixes in second phosphor gel 9 is one or more and the silicate red fluorescence powder in aluminate yellow fluorescent powder, silicate yellow fluorescent powder, the nitride yellow fluorescent powder, one or more the mixture in the nitride red fluorescent powder.Adopt secondary colour fluorescent material in second phosphor gel, help improving the toning effect and the ability of light source, improve the quality of product.
As a kind of preferred, there is not electric connection between the chip array in adjacent light source region.Between the chip array in adjacent light source region, do not have and electrically connect; Promptly be filled with nothing electric connection between two types the light source region of first phosphor gel and second phosphor gel respectively; The colour temperature of light source module and the controllability of colorimetric purity have been improved; Avoided influence each other, improved the dimming behavior of light source module the luminous intensity of the chip of two kinds of light source region.
As a kind of preferred, the connected mode between the chip array of light source region is parallel connection and/or series connection separately.Carry out the electric connection of parallel connection and/or series connection between the chip array with light source region separately; Promptly be filled with between the light source region of fluorescent material of same type of first phosphor gel or second phosphor gel and implement to electrically connect; Help the luminous intensity of the chip in the light source region is controlled; Reduced the complexity of equipment; Also help the consistency of the light source region luminous intensity that guarantees notification type simultaneously, guaranteed luminous stability and the consistency on colour temperature and colorimetric purity and light intensity of whole light source.
As a kind of preferred, fence 7 surrounds the light source region that forms and is rectangle, and the limit of adjacent two light source region is the shared single-row fence 7 or the fence 7 of distance or and show the fence 7 of spacing continuously side by side.To adopt fence that light source region is distinguished; Help in coating fluorescent powder glue, operating on it; Prevented that effectively dissimilar phosphor gel from mixing when applying; Influence the luminous mass of light source module, also reduced the difficulty of producing effectively through this setting simultaneously, guaranteed the quality stability of the light source module of batch process.
As a kind of preferred, light source region is a rectangle, and rectangular width edge length is less than 1/4th of long edge lengths, and the length of broadside is greater than 1mm simultaneously.Through the light source region specification is provided with; And it is 1mm at least that the length of broadside is set to; Help guaranteeing that light source checks colors in the regulating power of gentle colorimetric purity; Reduce the production complicacy and the degree of difficulty of product, under the situation that guarantees product quality, control production cost of products effectively.
A kind of tunable optical COB light source module; Form by base plate for packaging, led chip, fence, first phosphor gel, second phosphor gel; Led chip directly is fixed on the base plate for packaging; Fence is divided into several adjacent light source region with led chip, does not have between each adjacent light source region to electrically connect, and first phosphor gel and second phosphor gel be being filled in the adjacent light source region of interval respectively.
Led chip is launched blue light under the electroluminescence condition, peak wavelength is 440nm ~ 465nm.
Be filled with the light source region of first phosphor gel and second phosphor gel; When electroluminescence; The blue light that led chip sends mixes with the light of fluorescent material emission; The chromaticity coordinates of the light that obtains lays respectively in (X=0.32 ± 0.03, Y=0.34 ± 0.05) and (0.45 ± 0.03, Y=0.40 ± 0.04) interval.
Be mixed with fluorescent material in first phosphor gel; These fluorescent material are a kind of of aluminate or silicate yellow fluorescent powder or two kinds of mixtures; Be mixed with fluorescent material in second phosphor gel, these fluorescent material are one or more and the silicate red fluorescence powder in aluminate yellow fluorescent powder, silicate yellow fluorescent powder, the nitride yellow fluorescent powder, one or more the mixture in the nitride red fluorescent powder.
Connected mode between the light source region separately is series connection or parallel connection or connection in series-parallel.
All light source region are rectangle, join with rectangular long limit between the adjacent light source region.
The width edge length of light source region less than long edge lengths 1/4th and greater than 1mm.
Array is arranged 6 rows, 6 row chips; Each row chip 6 is series connection; With enclosing 7 that each row chip 6 is spaced apart, in adjacent light source region, fill first phosphor gel 7 and second phosphor gel 8 respectively respectively, wherein first phosphor gel 7 is the mixture of single yellow fluorescent powder and silica gel; Second phosphor gel 8 is mixtures of red fluorescence powder and yellow fluorescent powder and silica gel composition, this integral body is put into baking oven solidify the tunable optical COB light source module of the present invention that can make; In use; Through regulating the chip 6 operating currents size of first phosphor gel 7 and second phosphor gel, 8 place light source region respectively; Can regulate the colour temperature and the chromaticity coordinates of each light source region respectively; The light that just can realize whole tunable optical COB light source module behind the mixed light is the blackbody radiance curve of CIE-1931 chromatic diagram in wherein zone 3 shown in Figure 4; Zone 4 is the zone at the light place behind the COB tunable optical light source module mixed light disclosed by the invention; With the zone of being interrupted 1 shown in Figure 3 be first phosphor gel 8 to be coated on the chip 6 luminous separately be that second phosphor gel 9 is applied in luminous zone on the CIE1931 chromatic diagram separately on the chip 6 in zone on the CIE1931 chromatic diagram and zone 2, the contrast surface, the dissimilar phosphor gel of alternate setting disclosed by the invention applies light source region; Make light source have the ability of continuous light tuning, and reach lighting effect preferably.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme of being made up of above technical characterictic combination in any.
Tunable optical COB light source module disclosed by the invention; Through led chip being divided into independent light source region; And through in adjacent light source region, filling dissimilar phosphor gel, control through size of current, and then realize the colour temperature and the colorimetric purity of whole LED light source are regulated and control the light source region that is filled with the same kind phosphor gel; Make tunable optical COB light source module realize blackbody radiance curve continuous light tuning at the CIE-1931 chromatic diagram; Increased the dimming scope of led light source, also guaranteed the consistency of led light source colour temperature and colorimetric purity in the light area simultaneously, also structurally light source region has been set simultaneously; Help improving the toning ability of light source, also realized control production cost of products.
Claims (9)
1. tunable optical COB light source module; Comprise the substrate that offers mounting groove, be arranged on chip array and package casing in the mounting groove; It is characterized in that: described tunable optical COB light source module also comprises fence, first phosphor gel and second phosphor gel; Described fence is arranged on the substrate; And mounting groove is drawn interior chip array divide some light source region, described first phosphor gel and second phosphor gel are filled into respectively in each light source region, and each light source region is only filled any one in first phosphor gel or second phosphor gel.
2. tunable optical COB light source module according to claim 1 is characterized in that: the described blue-light LED chip that is that is arranged on the interior chip array of mounting groove, peak wavelength is 440nm-465nm.
3. tunable optical COB light source module according to claim 1 is characterized in that: fill first phosphor gel and second phosphor gel in the said adjacent light source region respectively, the light source region that is filled with phosphor gel of the same race is non-conterminous.
4. according to the tunable optical COB light source module of claim 3, it is characterized in that: the fluorescent material that mixes in described first phosphor gel is a kind of of aluminate or silicate yellow fluorescent powder or two kinds of mixtures.
5. the tunable optical COB light source module of stating according to claim 3 is characterized in that: the fluorescent material that mixes in described second phosphor gel is one or more and the silicate red fluorescence powder in aluminate yellow fluorescent powder, silicate yellow fluorescent powder, the nitride yellow fluorescent powder, one or more the mixture in the nitride red fluorescent powder.
6. according to the described tunable optical COB light source of claim 1 module, it is characterized in that: do not have electric connection between the chip array in described adjacent light source region.
7. tunable optical COB light source module according to claim 1 is characterized in that: the connected mode between the chip array of described light source region separately is parallel connection and/or series connection.
8. tunable optical COB light source module according to claim 1; It is characterized in that: described fence surrounds the light source region that forms and is rectangle, and the limit of adjacent two light source region is the shared single-row fence or the fence of distance or and show the fence of spacing continuously side by side.
9. tunable optical COB light source module according to claim 8 is characterized in that: said light source region is a rectangle, and rectangular width edge length is less than 1/4th of long edge lengths, and the length of broadside is greater than 1mm simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100701197A CN102709450A (en) | 2012-03-16 | 2012-03-16 | Dimmable COB (chip on board) light source module |
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| CN2012100701197A CN102709450A (en) | 2012-03-16 | 2012-03-16 | Dimmable COB (chip on board) light source module |
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| CN102709450A true CN102709450A (en) | 2012-10-03 |
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| CN104851961A (en) * | 2015-03-24 | 2015-08-19 | 湘能华磊光电股份有限公司 | Chip scale packaging method and structure for light-emitting device |
| CN105465645A (en) * | 2016-01-11 | 2016-04-06 | 深圳市立洋光电子股份有限公司 | Color-changeable COB LED for spotlights and production method thereof |
| CN105823009A (en) * | 2015-01-09 | 2016-08-03 | 欧普照明股份有限公司 | Illuminating device and lamp comprising same |
| JP2017163001A (en) * | 2016-03-09 | 2017-09-14 | パナソニックＩｐマネジメント株式会社 | Light-emitting module and lighting device |
| CN114447192A (en) * | 2022-01-20 | 2022-05-06 | 东莞市中麒光电技术有限公司 | Display module manufacturing method, display module and display screen |
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| CN105823009A (en) * | 2015-01-09 | 2016-08-03 | 欧普照明股份有限公司 | Illuminating device and lamp comprising same |
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| CN114447192A (en) * | 2022-01-20 | 2022-05-06 | 东莞市中麒光电技术有限公司 | Display module manufacturing method, display module and display screen |
| CN114447192B (en) * | 2022-01-20 | 2023-09-19 | 东莞市中麒光电技术有限公司 | Display module manufacturing method, display module and display screen |
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Application publication date: 20121003 |