CN109671836A - A kind of adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of adjustable color temperature - Google Patents
A kind of adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of adjustable color temperature Download PDFInfo
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- 238000001228 spectrum Methods 0.000 claims abstract description 56
- 239000003086 colorant Substances 0.000 claims abstract description 22
- 238000005538 encapsulation Methods 0.000 claims abstract description 21
- 239000002390 adhesive tape Substances 0.000 claims abstract description 19
- 230000005284 excitation Effects 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 43
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- 150000004767 nitrides Chemical class 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 150000004645 aluminates Chemical class 0.000 claims description 13
- 241001062009 Indigofera Species 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 6
- RWLIDFDVLWSKTE-UHFFFAOYSA-N [Si].[N].[La] Chemical compound [Si].[N].[La] RWLIDFDVLWSKTE-UHFFFAOYSA-N 0.000 claims description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000009877 rendering Methods 0.000 description 8
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- 239000010452 phosphate Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
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- 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
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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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
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
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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
- H01L33/52—Encapsulations
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Abstract
The invention discloses a kind of adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of adjustable color temperature, method one: two or more are respectively coated the LED chip encapsulation combination of different colours fluorescent powder；The fluorescent powder of every LED chip excitation monochrome in combination generates identical with fluorescent powder color photochromic；The light of different colours is mixed by circuit drives, generates full spectrum white-light；Alternatively, method two: the LED chip for being coated with transparent adhesive tape is combined with the two or more LED chip encapsulation coated with different colours fluorescent powder；The light of different colours in combination is mixed by circuit drives, generates full spectrum white-light.Implementation method of the invention realizes that white light colour temperature is arbitrarily adjustable than carrying out light mixing by the different photochromic electric currents of regulation, arbitrarily adjustable in the aobvious finger of same color temperature scheme, and the brightness of different-colour can also be arbitrarily adjustable.White light is realized compared to previous traditional LED, is easier to realize by the white light that circuit drives mix, it is more efficient.
Description
Technical field
The invention belongs to technical field of semiconductor illumination.It can be lightened more particularly, to a kind of adjustable aobvious finger of adjustable color temperature
Spend the implementation method of white light LEDs.
Background technique
With the increasingly raising of people's living standard, the requirement to LED illumination is also increasingly turned to from simple environmental protection and energy saving
To healthy comfortable pursuit, i.e. adaptation consumer psychology and physiological health demand is target, leading " Healthy Lighting " board.And it mentions
" health " index of LED illumination, is primarily referred to as colour rendering height, i.e. light source is strong to the color restoration capability of object.But due to light source
Requirement of the light efficiency from colour rendering index to emergent light power profile it is different, this results in improving light efficiency simultaneously and colour rendering index is deposited
In difficulty.Requirement of the lamp terminal user to the light efficiency of LED light source, service life, colour rendering increasingly improves, this is to as white light LEDs
The technology and performance of indispensable fluorescent powder are put forward higher requirements.
Realize that the mode of white light mainly has following three kinds at present: the first implementation method is coated on blue LED die
The yellow fluorescent powder that can be stimulated by blue light, the yellow light that the blue light and fluorescent powder that chip issues issue are complementarily shaped to white light；Although system
Make simply, at low cost but its light efficiency is low, and colour rendering is to be improved, and low color temperature is difficult to realize.Second of implementation method is blue led
Green and red fluorescence powder are coated on chip, the green light that issues with fluorescent powder of blue light that issues by chip and feux rouges is compound obtains
White light, colour rendering are preferable；But although the program improves colour rendering index, and but there is the re-absorptions between different fluorescent powders to ask
Topic, influences the luminous efficiency of white light LEDs.The third implementation method is that coating three color of red, green, blue or polychrome are glimmering on UV-LED chip
Light powder utilizes the long wave ultraviolet (370nm-380nm) or purple light (380nm-410nm) reality come excitated fluorescent powder of the chip emission
Existing white light emission；This method colour rendering is more preferable, but blue powder fluorescent powder has that transfer efficiency is low；And current launching efficiency
Preferable green emitting phosphor is mostly silicate systems, and this kind of fluorescent powder is sensitive to temperature humidity, light decay is larger, is only applicable to small function
The encapsulation of rate form.
Therefore efficient, the high aobvious white light LEDs referred to are developed and have become an extremely urgent job.In order to solve above-mentioned technology
Problem, the present invention provide a kind of implementation method of adjustable aobvious full spectrum white-light LED for referring to brightness-adjustable of adjustable color temperature；This method exists
It realizes and significantly improves light efficiency on the basis of full spectrum and height show finger.
Summary of the invention
In order to solve the above technical problems, it is an object of the present invention to provide a kind of adjustable aobvious fingers of adjustable color temperature to lighten
Spend the implementation method of white light LEDs.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of adjustable color temperature, method one include the following steps:
1) the LED chip encapsulation combination of different colours fluorescent powder two or more is respectively coated；Every LED in combination
The monochromatic fluorescent powder of chip excitation generates identical with fluorescent powder color photochromic；
2) light (non-white light) of different colours in combination is mixed by circuit drives, generates full spectrum white-light；
Alternatively, method two includes the following steps:
1) LED chip and the two or more LED core coated with different colours fluorescent powder of transparent adhesive tape are coated with
Piece encapsulation combination；LED chip coated with transparent adhesive tape generates identical as LED chip color photochromic；Coated with one-color fluorescence powder
It is identical with fluorescent powder color photochromic that single LED chip excites corresponding fluorescent powder to generate；
2) light (non-white light) of different colours in combination is mixed by circuit drives, generates full spectrum white-light.
Further, the LED chip can be share the same light color or different photochromic LED chip；Preferably, the LED chip is indigo plant
One or both of light LED chip, purple LED chip；It is highly preferred that the wavelength of the blue-light LED chip is 445-
485nm；The wavelength of the purple LED chip is 380-445nm.
Further, the fluorescent powder is blue colour fluorescent powder, hanced cyan fluorescent powder, green emitting phosphor, yellow fluorescent powder and red
One of fluorescent powder is a variety of.
Further, the wavelength of the blue colour fluorescent powder is 445-480nm, and the wavelength of the hanced cyan fluorescent powder is 480-
510nm, the wavelength of the green emitting phosphor are 510-570nm.The wavelength of the yellow fluorescent powder is -570-610nm, the Huang
The wavelength of color fluorescent powder is 620-780nm, and the red fluorescence powder wavelength is 610-780nm.
Further, the blue colour fluorescent powder is the blue colour fluorescent powder of phosphate system, silicate systems or Nitride systems；
The hanced cyan fluorescent powder is the hanced cyan fluorescent powder of nitrogen oxides system, aluminates system or silicate systems；The green fluorescence
Powder is the green emitting phosphor of aluminate, silicate, lanthanum silicon nitrogen, Nitride systems.The yellow fluorescent powder is silicate systems, nitrogen
The yellow fluorescent powder of compound system or aluminates system；The red fluorescence powder is Nitride systems or fluoride system, nitrogen oxygen
The red fluorescence powder of compound system.
Further, the coating method is spot printing, mold, spraying or separate coating.
Further, the encapsulation for being encapsulated as the CSP combining form of DOB, COB, 7070,5630,5050,3030 or more.
Further, the adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of a kind of adjustable color temperature, method one include following step
It is rapid:
1) the purple LED chip for being coated with blue colour fluorescent powder is coated with different colours fluorescent powder with two or more
Blue-light LED chip encapsulate combination；The purple LED chip and blue-light LED chip excite respectively fluorescent powder thereon generate with
The identical supersaturated light of fluorescent powder color；
2) the supersaturated light (non-white light) of all different colours inspired is mixed, generates full spectrum white-light；
Alternatively, method two includes the following steps:
1) blue-light LED chip and the two or more blue-light LED chips coated with fluorescent powder of transparent adhesive tape are coated with
Encapsulation combination；The blue-light LED chip coated with transparent adhesive tape generates and blue-light LED chip color same light；It is described to be coated with
The fluorescent powder of the blue-light LED chip excitation of fluorescent powder thereon generates supersaturated light identical with fluorescent powder color；
2) the supersaturated light (non-white light) of all different colours is mixed, generates full spectrum white-light.
Further, the described two or more blue-light LED chips for being coated with fluorescent powder refer to coated with green emitting phosphor
Blue-light LED chip, the blue-light LED chip coated with yellow fluorescent powder, the blue-light LED chip coated with red fluorescence powder and coating
There are two in the blue-light LED chip of hanced cyan fluorescent powder or more.
Further, detailed process is as follows for step 2): by the way that LED described in the current regulation of each LED chip is operated alone
The corresponding optical power of identical with fluorescent powder color spectrum, then the light of all different colours is mixed, obtain on chip
The aobvious finger of required different-colour difference and the full spectrum white-light of different brightness.
Further, by the way that the brightness of full spectrum white-light, colour temperature described in the current regulation of each LED chip is operated alone and shows
Refer to；Adjustable color temperature or the aobvious change referred under same brightness；Adjustable brightness or the aobvious change referred under same color temperature；Same
The one aobvious change for referring to lower adjustable color temperature or brightness.
The present invention also provides a kind of adjustable aobvious encapsulating structure for referring to brightness-adjustable white light LEDs of adjustable color temperature, particular technique sides
Case is as follows:
A kind of adjustable aobvious encapsulating structure for referring to brightness-adjustable white light LEDs of adjustable color temperature, including the bracket with bowl, LED core
Piece and fluorescent powder；The bracket with bowl, LED chip and fluorescent powder are used into DOB, COB, 7070,5630,5050,3030
Or more CSP combining form encapsulation.
Further, the bracket is the bracket of PPA, PCT, EMC, SMC or ceramics；Further, the bracket has good
Good thermal conduction characteristic, bracket bowl cross sectional shape can be circle, rectangle, trapezoidal or irregular shape, and the coat of metal can in bracket
Think Ag, Cu, Au or other alloy layers.
Further, the structure of the chip is vertical structure, horizontal structure or inverted structure.
Further, fixed chip in the bracket is the core that more single wavelength chips formed or be more different wave lengths
Piece composition.
It further, include the array of one or more LED for realizing full spectrum white-light in the LED encapsulation structure.
Further, the method for realizing full spectrum white-light using the encapsulating structure of white light LEDs,
Method one includes the following steps:
1) the purple LED chip, the blue-light LED chip coated with green emitting phosphor, coating of blue colour fluorescent powder are coated with
There are the blue-light LED chip of yellow fluorescent powder and the blue-light LED chip encapsulation combination coated with red fluorescence powder；The purple LED
Blue colour fluorescent powder is coated on chip and generates purple light and blue light, and it is green that the blue-light LED chip coating green emitting phosphor generates supersaturation
Light, the blue-light LED chip coating yellow fluorescent powder generate supersaturated yellow light, and the blue chip coated red fluorescent powder generates
Supersaturated feux rouges；
2) by the way that LED chip brightness and colour temperature described in the current regulation of each LED chip is operated alone, so that purple light, indigo plant
Light, green light, yellow light and feux rouges mixing generate full spectrum white-light；
Method one can also be achieved by the steps of:
1) the purple LED chip, the blue-light LED chip coated with green emitting phosphor and coating of blue colour fluorescent powder are coated with
There is the blue-light LED chip encapsulation combination of red fluorescence powder；Blue colour fluorescent powder is coated on the purple LED chip generates purple light and indigo plant
Light, the blue-light LED chip coating green emitting phosphor generate supersaturated green light, and the blue chip coated red fluorescent powder generates
Supersaturated feux rouges；
2) by the way that LED chip brightness and colour temperature described in the current regulation of each LED chip is operated alone, so that purple light, indigo plant
Light, green light and feux rouges mixing generate full spectrum white-light；
Or, method two includes the following steps:
1) it is coated with the blue-light LED chip of transparent adhesive tape, the blue-light LED chip coated with green emitting phosphor, is coated with Huang
The blue-light LED chip of color fluorescent powder and blue-light LED chip coated with red fluorescence powder encapsulate combination；The blue-light LED chip
The upper transparent adhesive tape that is coated with generates supersaturated blue light, and the blue-light LED chip coating green emitting phosphor generates supersaturated green light, described
Blue-light LED chip coats yellow fluorescent powder and generates supersaturated yellow light, and the blue chip coated red fluorescent powder generates supersaturation
Feux rouges；
2) by the way that LED chip brightness and colour temperature described in the current regulation of each LED chip is operated alone, so that blue light, green
Light, yellow light and feux rouges mixing generate full spectrum white-light；
Method two can also be achieved by the steps of:
1) blue-light LED chip of transparent adhesive tape, the blue-light LED chip coated with green emitting phosphor are coated with and is coated with red
The blue-light LED chip of color fluorescent powder encapsulates combination；It is coated with transparent adhesive tape on the blue-light LED chip and generates supersaturated blue light, institute
It states blue-light LED chip coating green emitting phosphor and generates supersaturated green light, the blue chip coated red fluorescent powder generates satiety
And feux rouges；
2) by the way that LED chip brightness and colour temperature described in the current regulation of each LED chip is operated alone, so that blue light, green
Light and feux rouges mixing generate full spectrum white-light.
Method two can also be achieved by the steps of:
1) blue-light LED chip of transparent adhesive tape and the blue-light LED chip encapsulation combination coated with yellow fluorescent powder are coated with；
It is coated with transparent adhesive tape on the blue-light LED chip and generates supersaturated blue light, the blue-light LED chip coating yellow fluorescent powder generates
Supersaturated yellow light；
2) by the way that LED chip brightness and colour temperature described in the current regulation of each LED chip is operated alone, so that blue light, Huang
Light mixing generates full spectrum white-light.
Further, in step 2), by the way that LED chip brightness and color described in the current regulation of each LED chip is operated alone
Then temperature mixes the photochromic of the different colours and obtains to adjust the photochromic corresponding optical power of different colours in the LED chip
To the aobvious finger of required different-colour difference and the full spectrum white-light of different brightness.
Further, the brightness of the full spectrum white-light, colour temperature and aobvious refer to may be implemented individually to control；It can under same brightness
Adjust colour temperature or the aobvious change referred to；Adjustable brightness or the aobvious change referred under same color temperature；Color is adjusted under same aobvious finger
The change of temperature or brightness.
Further, by be operated alone each LED chip current control different colours spectrum ratio it is whole increase or
It reduces and realizes.
Beneficial effects of the present invention are as follows:
1, the implementation method of the full spectrum white-light LED of the present invention is arbitrarily more adjustable than realization white light colour temperature by adjusting electric current,
The aobvious finger of difference with color temperature scheme is also arbitrarily adjustable, and the brightness of different-colour can also be arbitrarily adjustable.Compared to previous tradition
LED realizes full spectrum white-light, makes the white light of demand be easier to realize by circuit drives.
2, the swing absorption that the implementation method of the full spectrum white-light LED of the present invention is reduced to the greatest extent to the greatest extent between fluorescent powder is asked
Topic improves the light efficiency of white light LEDs while realizing full spectrum to improve aobvious refer to.
3, the implementation method of the full spectrum white-light LED of the present invention simplifies test condition, reduces test equipment, improves LED
Lamp bead utilization rate.The light quality problem of the improvement LED component of high degree, and to the more comfortable safety of human eye.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the spectrogram of the full spectrum white-light of the embodiment of the present invention 1.
Fig. 2 shows the spectrograms of the full spectrum white-light of the embodiment of the present invention 2.
Fig. 3 shows the spectrogram of the full spectrum white-light of the embodiment of the present invention 3.
Fig. 4 shows the spectrogram of the full spectrum white-light of the embodiment of the present invention 4.
Fig. 5 shows the spectrogram of the full spectrum white-light of the embodiment of the present invention 5.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
Embodiment 1
A kind of implementation method of full spectrum white-light LED, includes the following steps:
1) the purple LED chip, the blue-light LED chip coated with hanced cyan fluorescent powder, coating of blue colour fluorescent powder are coated with
There are the blue-light LED chip, the blue-light LED chip coated with yellow fluorescent powder and the indigo plant coated with red fluorescence powder of green emitting phosphor
Light LED chip is using the encapsulation combination of DOB form；Blue colour fluorescent powder is coated on purple LED chip generates purple light and blue light, blue light
The generation of hanced cyan fluorescent powder and supersaturated green light are coated in LED chip, blue-light LED chip coating green emitting phosphor generates supersaturated green
Light, blue-light LED chip coat yellow fluorescent powder and generate supersaturated yellow light, and it is red that blue chip coated red fluorescent powder generates supersaturation
Light；
2) by the way that the current regulation green light of each LED chip, blue and green light, yellow light and the light function of feux rouges is operated alone
Rate, and so that purple light, blue light, green light, green light, yellow light and feux rouges is carried out mixing and generate full spectrum white-light.
Realize that each parameter of Fig. 1 (a) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the silicate systems blue colour fluorescent powder of wavelength 460nm；Hanced cyan fluorescent powder is wave
The nitrogen oxides system hanced cyan fluorescent powder of long 495nm；Green emitting phosphor is wavelength 537nm aluminates system green emitting phosphor；It is yellow
Color fluorescent powder is the silicate systems yellow fluorescent powder of wavelength 595nm；Red fluorescence powder is that wavelength 650nm Nitride systems are red
Fluorescent powder.As shown in Fig. 1 (a), colour temperature CCT=3700K shows and refers to Ra=94.
Realize that each parameter of Fig. 1 (b) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the phosphate system blue colour fluorescent powder of wavelength 470nm；Hanced cyan fluorescent powder is wave
The aluminates system hanced cyan fluorescent powder of long 500nm；Yellow fluorescent powder is the silicate systems yellow fluorescent powder of wavelength 595nm；It is red
Color fluorescent powder is wavelength 650nm Nitride systems red fluorescence powder；Green emitting phosphor is that wavelength 550nm silicate systems green is glimmering
Light powder.As shown in Fig. 1 (b), colour temperature CCT=4000K shows and refers to Ra=91.
Embodiment 2
A kind of implementation method of full spectrum white-light LED, includes the following steps:
1) the purple LED chip, the blue-light LED chip coated with green emitting phosphor, coating of blue colour fluorescent powder are coated with
There are the blue-light LED chip of yellow fluorescent powder and the blue-light LED chip coated with red fluorescence powder using the encapsulation combination of DOB form；
Blue colour fluorescent powder is coated on purple LED chip and generates supersaturated blue light, and blue-light LED chip coats green emitting phosphor and generates supersaturation
Green light, blue-light LED chip coat yellow fluorescent powder and generate supersaturated yellow light, and blue chip coated red fluorescent powder generates supersaturation
Feux rouges；
2) by the way that the current regulation blue and green light of each LED chip, the optical power of yellow light and feux rouges is operated alone, and
So that blue and green light, yellow light and feux rouges is carried out mixing and generates full spectrum white-light.
Realize that each parameter of Fig. 2 (a) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the phosphate system blue colour fluorescent powder of wavelength 470nm；Yellow fluorescent powder is wave
The silicate systems yellow fluorescent powder of long 595nm；Red fluorescence powder is wavelength 650nm Nitride systems red fluorescence powder；Green
Fluorescent powder is wavelength 535nm lanthanum silicon nitrogen systems green emitting phosphor.As shown in Fig. 2 (a), colour temperature CCT=3500K shows and refers to Ra=92.
Realize that each parameter of Fig. 2 (b) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the phosphate system blue colour fluorescent powder of wavelength 470nm；Yellow fluorescent powder is wave
The silicate systems yellow fluorescent powder of long 585nm；Red fluorescence powder is wavelength 650nm Nitride systems red fluorescence powder；Green
Fluorescent powder is wavelength 534nm nitrogen oxides system green emitting phosphor.As shown in Fig. 2 (b), colour temperature CCT=4200K shows and refers to Ra=
92。
Embodiment 3
A kind of implementation method of full spectrum white-light LED, includes the following steps:
1) the purple LED chip, the blue-light LED chip coated with green emitting phosphor and coating of blue colour fluorescent powder are coated with
There is the blue-light LED chip of red fluorescence powder using the encapsulation combination of 5630 forms；Blue colour fluorescent powder is coated on purple LED chip to generate
Supersaturated blue light, blue-light LED chip coat green emitting phosphor and generate supersaturated green light, and blue chip coated red fluorescent powder generates
Supersaturated feux rouges；
2) by the way that the current regulation blue and green light of each LED chip and the optical power of feux rouges is operated alone, and make indigo plant
Light, green light and feux rouges carry out mixing and generate full spectrum white-light.
Realize that each parameter of Fig. 3 (a) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the silicate systems blue colour fluorescent powder of wavelength 460nm；Red fluorescence powder is wave
Long 650nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 534nm lanthanum silicon nitrogen systems green emitting phosphor.Such as Fig. 3
(a) shown in, colour temperature CCT=3200K shows and refers to Ra=96.
Realize that each parameter of Fig. 3 (b) full spectrum white-light is specific as follows: the wavelength of purple LED chip is 400nm, blue-ray LED
The wavelength of chip is 450nm.Blue colour fluorescent powder is the phosphate system blue colour fluorescent powder of wavelength 470nm；Red fluorescence powder is wave
Long 640nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 540nm aluminates system green emitting phosphor.Such as Fig. 3
(b) shown in, colour temperature CCT=3200K shows and refers to Ra=90.
Embodiment 4
A kind of implementation method of full spectrum white-light LED, includes the following steps:
1) be coated with the blue-light LED chip of transparent adhesive tape, the blue-light LED chip coated with hanced cyan fluorescent powder, be coated with it is green
The blue-light LED chip of color fluorescent powder, the blue-light LED chip coated with yellow fluorescent powder and the blue light coated with red fluorescence powder
LED chip is using the encapsulation combination of DOB form；It is coated with transparent adhesive tape on blue-light LED chip and generates supersaturated blue light, blue-ray LED core
Piece coats hanced cyan fluorescent powder and generates supersaturated green light, and blue-light LED chip coats green emitting phosphor and generates supersaturated green light, blue light
LED chip coats yellow fluorescent powder and generates supersaturated yellow light, and blue chip coated red fluorescent powder generates supersaturated feux rouges；
2) by the way that the current regulation green light of each LED chip, blue and green light, yellow light and the light function of feux rouges is operated alone
Rate, and so that green light, blue and green light, yellow light and feux rouges is carried out mixing and generate full spectrum white-light.
Realize that each parameter of Fig. 4 (a) full spectrum white-light is specific as follows: the wavelength of blue-light LED chip is 450nm.Cyan is glimmering
Light powder is the aluminates system hanced cyan fluorescent powder of wavelength 500nm；Yellow fluorescent powder is that the silicate systems yellow of wavelength 595nm is glimmering
Light powder；Red fluorescence powder is wavelength 650nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 532nm lanthanum silicon nitrogen body
It is green emitting phosphor.As shown in Fig. 4 (a), colour temperature CCT=2700K shows and refers to Ra=95.
Realize that each parameter of Fig. 4 (b) full spectrum white-light is specific as follows: the wavelength of blue-light LED chip is 450nm.Cyan is glimmering
Light powder is the aluminates system hanced cyan fluorescent powder of wavelength 500nm；Yellow fluorescent powder is that the silicate systems yellow of wavelength 595nm is glimmering
Light powder；Red fluorescence powder is wavelength 580nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 535nm nitrogen oxides
System green emitting phosphor.As shown in Fig. 4 (b), colour temperature CCT=2700K shows and refers to Ra=92.
Embodiment 5
1) blue-light LED chip of transparent adhesive tape, the blue-light LED chip coated with green emitting phosphor are coated with and is coated with red
The blue-light LED chip of color fluorescent powder is using the encapsulation combination of DOB form；It is coated with transparent adhesive tape on blue-light LED chip and generates supersaturation
Blue light, blue-light LED chip coat green emitting phosphor and generate supersaturated green light, and blue chip coated red fluorescent powder generates supersaturation
Feux rouges；
2) by the way that the current regulation blue and green light of each LED chip and the optical power of feux rouges is operated alone, and make indigo plant
Light, green light and feux rouges carry out mixing and generate full spectrum white-light.
Realize that each parameter of Fig. 5 (a) full spectrum white-light is specific as follows: the wavelength of blue-light LED chip is 450nm.It is red glimmering
Light powder is wavelength 630nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 537nm aluminates system green fluorescence
Powder.As shown in Fig. 5 (a), colour temperature CCT=3200K shows and refers to Ra=90.
Realize that each parameter of Fig. 5 (b) full spectrum white-light is specific as follows: the wavelength of light LED chip is 450nm.Red fluorescence
Powder is wavelength 640nm Nitride systems red fluorescence powder；Green emitting phosphor is wavelength 540nm aluminates system green emitting phosphor.
As shown in Fig. 5 (a), colour temperature CCT=3000K shows and refers to Ra=95.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of adjustable aobvious implementation method for referring to brightness-adjustable white light LEDs of adjustable color temperature, which is characterized in that method one includes as follows
Step:
1) the LED chip encapsulation combination of different colours fluorescent powder two or more is respectively coated；Every LED chip in combination
The monochromatic fluorescent powder of excitation generates identical with fluorescent powder color photochromic；
2) light of different colours in combination is mixed by circuit drives, generates full spectrum white-light；
Alternatively, method two includes the following steps:
1) LED chip and the two or more LED chip coated with different colours fluorescent powder for being coated with transparent adhesive tape are sealed
Dress combination；LED chip coated with transparent adhesive tape generates identical as LED chip color photochromic；Single coated with one-color fluorescence powder
It is identical with fluorescent powder color photochromic that LED chip excites corresponding fluorescent powder to generate；
2) light of different colours in combination is mixed by circuit drives, generates full spectrum white-light.
2. implementation method according to claim 1, which is characterized in that the LED chip can be color or different photochromic of sharing the same light
LED chip；Preferably, the LED chip is one or both of blue-light LED chip, purple LED chip；It is highly preferred that institute
The wavelength for stating blue-light LED chip is 445-485nm；The wavelength of the purple LED chip is 380-445nm.
3. implementation method according to claim 1, which is characterized in that the fluorescent powder is blue colour fluorescent powder, hanced cyan fluorescent
One of powder, green emitting phosphor, yellow fluorescent powder and red fluorescence powder are a variety of.
4. implementation method according to claim 3, which is characterized in that the wavelength of the blue colour fluorescent powder is 445-480nm,
The wavelength of the hanced cyan fluorescent powder is 480-500nm, and the wavelength of the green emitting phosphor is yellow fluorescent powder described in 510-570nm
Wavelength be 570-610nm, the red fluorescence powder wavelength be 610-780nm,；Preferably, the blue colour fluorescent powder is phosphoric acid
The blue colour fluorescent powder of salt system, silicate systems or Nitride systems；The hanced cyan fluorescent powder is nitrogen oxides system, aluminate
The hanced cyan fluorescent powder of system or silicate systems；The green emitting phosphor is aluminate, silicate, lanthanum silicon nitrogen, Nitride systems
Green emitting phosphor；The yellow fluorescent powder is the yellow fluorescent powder of silicate systems, Nitride systems or aluminates system；Institute
State the red fluorescence powder that red fluorescence powder is Nitride systems or fluoride, nitrogen oxides system.
5. implementation method according to claim 1, which is characterized in that the coating method is spot printing, mold, spraying or remote
From coating.
6. implementation method according to claim 1, which is characterized in that it is described be encapsulated as DOB, COB, 7070,5630,
5050, the encapsulation of 3030 or more CSP combining forms.
7. -6 any implementation method according to claim 1, which is characterized in that method one includes the following steps:
1) be coated with blue colour fluorescent powder purple LED chip and the two or more indigo plant coated with different colours fluorescent powder
The encapsulation combination of light LED chip；The purple LED chip and blue-light LED chip excite the generation of fluorescent powder thereon and fluorescence respectively
The identical supersaturated light of powder color；
2) the supersaturated light of all different colours inspired is mixed, generates full spectrum white-light；
Alternatively, method two includes the following steps:
1) blue-light LED chip and the two or more blue-light LED chip coated with fluorescent powder of transparent adhesive tape are coated with
Encapsulation combination；The blue-light LED chip coated with transparent adhesive tape generates and blue-light LED chip color same light；It is described to be coated with
The fluorescent powder of the blue-light LED chip excitation of fluorescent powder thereon generates supersaturated light identical with fluorescent powder color；
2) all different supersaturated light inspired are mixed, generates spectrum white-light.
8. implementation method according to claim 7, which is characterized in that described two or more coated with fluorescent powder
Blue-light LED chip refer to the blue-light LED chip coated with green emitting phosphor, the blue-light LED chip coated with yellow fluorescent powder,
Two or more in blue-light LED chip coated with red fluorescence powder and the blue-light LED chip coated with hanced cyan fluorescent powder.
9. implementation method according to claim 7, which is characterized in that detailed process is as follows for step 2): by individually driving
Photochromic corresponding optical power identical with fluorescent powder color in LED chip described in the current regulation of each LED chip is moved, then will
The light of all different colours is mixed, and the full spectrum white-light of the aobvious finger of required different-colour difference and different brightness is obtained.
10. implementation method according to claim 9, which is characterized in that by the electric current tune that each LED chip is operated alone
Save brightness, colour temperature and the aobvious finger of the full spectrum white-light；Adjustable color temperature or the aobvious change referred under same brightness；With of the same colour
The lower adjustable brightness of temperature or the aobvious change referred to；The change of adjustable color temperature or brightness under same aobvious finger.
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| CN112270893A (en) * | 2020-09-09 | 2021-01-26 | 深圳市奥拓电子股份有限公司 | Ultraviolet LED excited fluorescence display method, device and system |
| CN112594653A (en) * | 2020-12-09 | 2021-04-02 | 广州市雅江光电设备有限公司 | Color temperature adjustable high color rendering white light system and imaging device |
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