CN108601157A - A kind of white light LEDs lamp bead based on RGB three primary colours chips - Google Patents
A kind of white light LEDs lamp bead based on RGB three primary colours chips Download PDFInfo
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- CN108601157A CN108601157A CN201810641513.9A CN201810641513A CN108601157A CN 108601157 A CN108601157 A CN 108601157A CN 201810641513 A CN201810641513 A CN 201810641513A CN 108601157 A CN108601157 A CN 108601157A
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- 239000011324 bead Substances 0.000 title claims abstract description 58
- 239000003086 colorant Substances 0.000 title claims abstract description 17
- 238000004020 luminiscence type Methods 0.000 claims abstract description 51
- 230000004907 flux Effects 0.000 claims abstract description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 8
- 230000003760 hair shine Effects 0.000 claims description 4
- 238000011109 contamination Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 4
- 238000009877 rendering Methods 0.000 abstract description 4
- 235000012431 wafers Nutrition 0.000 description 22
- 241001465382 Physalis alkekengi Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 241000083879 Polyommatus icarus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The present invention proposes a kind of white light LEDs lamp bead based on RGB three primary colours chips, the luminescence unit being connected in parallel including several, each luminescence unit includes l R chip (red) being connected in series with, m G chip (green), n B chip (blue) and Zero-ohm resistor, and l, m, n meetWhereinFor the luminous flux of R chips,For the luminous flux of G chips,For the luminous flux of B chips, l, m, n are positive integer.The present invention can improve the use reliability and quality index of LED lamp bead, extend the service life of LED lamp bead, improve colour rendering index, reduce blue light contamination, realize real green illumination.
Description
Technical field
The invention belongs to White light LED technology field, especially a kind of white light LEDs lamp bead based on RGB three primary colours chips.
Background technology
White light LEDs lamp bead in the market mostly uses blue LED wafers and fluorescent powder is added to generate yellow light, then closed by blue light+yellow light
While it seem that being white light, but it is not real white light at the technology path of white light.This is because human eye cannot correct resolved light
It is outstanding the disadvantage is that having lacked the ingredient of feux rouges in spectrum caused by composing ingredient.Lamps and lanterns are not intended to see, but are used for illuminating
, due to the missing of spectral component, when illumination, leads to cross-color, in turn results in asthenopia, causes myopia.
Second, white light LEDs lamp bead blue peak in the market is very high, there are blue light contaminations, also have harmful effect to eyesight.
Third will produce energy loss by fluorescent powder conversion, reduce luminous efficiency.
Another white light LEDs pattern is that have the effect that shines using tri- kinds of LED luminescent wafers synthesis white lights of three primary colours R, G, B
Can be high, colour rendering is good the advantages that, but due to three kinds of wafer property differences so that their type of drive are more complicated, are easy hair
Add lustre to drift, influences to illuminate stability.Currently, RGB LED lamp pearl is that three kinds of luminescent wafers are drawn respectively, for colored light modulation
Occasion, be used as white-light illuminating and inconvenient.
In addition, it is considered that the service life of LED lamp bead is up to decades, but actually makes the reliability after lamps and lanterns and be not so good as
That envisions is so good, this and the structural manufacturing process of LED lamp etc. are closely related.General lamps and lanterns have a large amount of LED luminescence units to participate in
Wherein, these units are connected with serial or parallel connection mode, and problem is in lamp bead in parallel the Damage by Short Circuit as there are one, entirely simultaneously
Connection lamp group will not work, and equally, not worked in lamp bead of connecting as there are one open circuit breakage, will also result in entirely series connection lamp group.By can
By property theoretical calculation, even if the MTBF (mean free error time) of single led lamp bead is up to decades, and by a lamp bead groups up to a hundred
At lamps and lanterns will break down as long as there are one lamp beads to damage, the MTBF of lamps and lanterns just only has some months.Meanwhile it is in parallel
Lamp bead voltage it is identical, and the forward voltage of each lamp bead is not quite similar, and small voltage differences will result in electric current significantly
Difference, the big acceleration aging of electric current, the small luminous intensity of electric current weaken, cause dark space, also light fitting quality to be made to be badly damaged.LED
The reliability and quality of lamps and lanterns are the problems to be thought better of.
Invention content
Technical problem solved by the invention is to provide a kind of white light LEDs lamp bead based on RGB three primary colours chips, use
Several luminescence units being connected in parallel, each luminescence unit include that l R chip (red) being connected in series with, m G chip are (green
Color), n B chip (blue) and Zero-ohm resistor extend LED light to improve the use reliability and quality index of LED lamp bead
The service life of pearl improves colour rendering index, reduces blue light contamination, realizes real green illumination.
Realize that the technical solution of the object of the invention is：
A kind of LED lamp bead based on RGB three primary colours chips, including several luminescence units for being connected in parallel, it is each to shine
Unit includes l R chip (red) being connected in series with, m G chip (green), n B chip (blue) and Zero-ohm resistor, and
L, m, n meetWhereinFor the luminous flux of R chips,For the luminous flux of G chips,For B
The luminous flux of chip, l, m, n are positive integer.
Preferably, gold wire connection is all made of between R chips, G chips, B chips and Zero-ohm resistor.
Preferably, the quantity of luminescence unit is at least 2.
Preferably, the quantity of luminescence unit meets the following conditions：N=Ie/ie+1, wherein N is the quantity of luminescence unit,
Ie is the rated current of lamp bead, and ie is the rated current of each luminescence unit.
Preferably, the quantity N ∈ [5,50] of luminescence unit.
Preferably, the chip in each luminescence unit is arranged to several delta structures, and each chip and other
Chip constitutes isosceles triangle junior unit, and each isosceles triangle junior unit includes 1 R chip, 1 G chip and 1 B chip.
Preferably, the connection structure that is in line, the chip between adjacent light-emitting units is arranged in the chip in each luminescence unit
At several delta structures, each isosceles triangle junior unit includes 1 R chip, 1 G chip and 1 B chip.
The present invention has the following technical effects using above technical scheme is compared with the prior art：
1, the present invention uses R chips, G chips, B chips and Zero-ohm resistor cascaded structure, even if individual R chips, G are brilliant
Piece, B wafer failure short circuits, branch current increases severely where causing, and open circuit is formed to blow Zero-ohm resistor, without influencing
LED lamp bead Integral luminous effect；
2, luminescence unit of the invention being connected in parallel using redundancy, can improve the use reliability and matter of LED lamp bead
Figureofmerit nor affects on the illumination effect of lamp bead even if there is luminescence unit failure all the way, effectively extends actually making for LED lamp bead
Use the service life；
3, the white light that the present invention is generated using R chips, G chips, B wafer tandem modes, than common blue light+yellow light mode
Generated white light has better colour rendering index；
4, the present invention generates white light using R chips, G chips, B wafer tandem modes, reduces the energy of fluorescence conversion links
Amount loss, makes light efficiency higher；
5, the R chips, G chips of the present invention, the luminous ratio of B chips are 3:6:1, wherein blue light accounting only 10%, effectively
The shortcomings that improving common LED lamp bead blue light contamination is real environmentally protective lighting system.
Description of the drawings
Fig. 1 is the white light LEDs lamp bead circuit diagram of the present invention；
Fig. 2 is the circuit diagram of the white light LEDs lamp bead embodiment 1 of the present invention；
Fig. 3 is the white light LEDs lamp bead circuit structure diagram of the embodiment of the present invention 1；
Fig. 4 is the circuit diagram of the white light LEDs lamp bead embodiment 2 of the present invention；
Fig. 5 is the white light LEDs lamp bead circuit structure diagram of the embodiment of the present invention 2
Reference numeral meaning：1：Lamp bead positive electrode, 2：Zero-ohm resistor, 3：Gold wire, 4：P-type electrode, 5：R chips, 6：N
Type electrode, 7：G chips, 8：B chips, 9：Lamp bead negative electrode
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
To same or similar label eventually and the same or similar element of symbolic indication or element with the same or similar functions.Below
The embodiment described by reference to attached drawing is exemplary, and is only used for explaining the present invention, and cannot be construed to the present invention's
Limitation.
A kind of white light LEDs lamp bead based on RGB three primary colours chips, as shown in Figure 1, shining including what several were connected in parallel
The quantity of unit, luminescence unit is at least 2.Each luminescence unit includes the l R chip, m G chip, n B being connected in series with
Chip and Zero-ohm resistor are all made of gold wire connection between R chips, G chips, B chips and Zero-ohm resistor.And l, m, n are full
FootWhereinFor the luminous flux of R chips,For the luminous flux of G chips,For B chips
Luminous flux, l, m, n are positive integer.The quantity of luminescence unit in parallel meets：N=Ie/ie+1, wherein N is the number of luminescence unit
Amount, Ie are the rated current of lamp bead, and ie is the rated current of each luminescence unit.Preferably, luminescence unit quantity N ∈ [5,
10]。
The quantity N of luminescence unit uses the redundant fashion of Ie/ie+1 in this programme, stays one group of spare LED luminescence unit more
Work is participated in, when there are individual LED wafer failure open circuits, although the series arm no longer shines, other LED wafers are still
It can work normally, individual LED wafers failures in luminescence unit in parallel can be solved and cause lamp bead can not normal luminous, reduction lamp bead
The problem of reliability.When the quantity N of luminescence unit is larger, the distance between LED wafer very little inside lamp bead, in individual LED
After wafer failure, macroscopically see that lamp bead will not generate apparent dark space.
RGB LED wafers and the concatenated combination of Zero-ohm resistor are used in luminescence unit, are failed in individual LED wafers short-circuit
When, which increases severely, and will blow and the concatenated Zero-ohm resistor of LED wafer so that and the luminescence unit forms open circuit,
Then other luminescence units continue to work normally, to which lamp bead can also work normally.
In addition, in production management, the turn-on voltage of LED wafer is accurately measured LED wafer and is sorted, it will be same
The voltage difference of each serial light emitting cell of one lamp bead accomplishes to be less than 100mV.
Embodiment 1
A kind of white light LEDs lamp bead based on RGB three primary colours chips, as shown in Fig. 2, the actual parameter for the RGB chips selected
It is：Ir=Ig=Ib=50mA；
Lm, that is, lumen is lumen；
And meetProportionate relationship, under this parameter configuration, allow R, G, B number of wafers：l
=m=n=1.
The connection structure that is in line, the chip between adjacent light-emitting units is arranged in chip in this implementation in each luminescence unit
At several delta structures, each isosceles triangle junior unit includes 1 R chip, 1 G chip and 1 B chip.The lamp bead knot
Structure as shown in figure 3, including 6 luminescence units that are connected in parallel of row, each column luminescence unit include R chips 5, G chips 6, B chips 7 with
And Zero-ohm resistor 2, described three are connected in series between LED wafer and Zero-ohm resistor using gold wire, luminescence unit and lamp
It is also connected with gold wire between the positive and negative electrode of pearl.The connection type of right several first row luminescence units is：Lamp bead positive electrode 1 and zero
The upper end of Ohmic resistance 2 connects, and the lower end of Zero-ohm resistor 2 is connect with the P-type electrode 4 of R chips 5, the N-type electrode 6 of R chips 5
Connected with the P-type electrode of G chips 7, the N-type electrode of G chips 7 is connected with the P-type electrode of B chips 8, the N-type electrode of B chips 8 and
Lamp bead negative electrode 9 connects；Right several secondary series luminescence unit connection methods are：The p-type of lamp bead positive electrode 1 and the G chips of secondary series
Electrode connects, and the N-type electrode of G chips is connected with the P-type electrode of the B chips of secondary series, the N-type electrode of B chips and the R of secondary series
The P-type electrode of chip connects, and the N-type electrode of R chips is connected with the upper end of the Zero-ohm resistor of secondary series, under Zero-ohm resistor
End is connect with lamp bead negative electrode 9；And so on, the luminescence unit connection type and first row luminescence unit phase of right several odd columns
Together, and the luminescence unit connection type of even column is identical with secondary series.
If some LED wafer failure short circuit in lamp bead, the current surge of the luminescence unit, it will blow concatenated hair
Light chip or Zero-ohm resistor so that the luminescence unit forms open circuit, and then the electric current of the lamp bead is being assigned to other just again
It works in normal luminescence unit.
Embodiment 2
A kind of LED lamp bead based on RGB three primary colours chips, as shown in figure 4, the actual parameter for R, G, B chip selected is：
Ir=Ig=Ib=70mA；
It is unsatisfactory forProportionate relationship.
Under same electric current,It links up, can provide with wafer manufacture factory：Chip, then
It enables
It can obtain：One group of minimum l, m, n value is：L=3, m=3, n=1；
That is (12.5 × 3)：(25×3)：(12.5 × 1)=3:6:1
Fig. 4 includes 6 luminescence units, and each luminescence unit has concatenated three R chips, three G chips and a B crystalline substance
Piece and a concatenated Zero-ohm resistor.It is connected in series with using gold wire between the LED wafer and Zero-ohm resistor.Hair
It is also connected with gold wire between light unit and the positive and negative electrode of lamp bead.
Chip in the present embodiment in each luminescence unit is arranged to several delta structures, and each chip and its
His chip constitutes isosceles triangle junior unit, and each isosceles triangle junior unit includes 1 R chip, 1 G chip and 1 B chip.Fig. 5
A kind of connection type of concrete structure of embodiment 2, the characteristics of this structure be inside luminescence unit, each chip and its
His chip constitutes the small luminescence units of RGB of isosceles triangle, makes the best results of synthesis white light.6 luminescence units are divided into two in Fig. 5
Group, respectively leaded extraction, when use, can be together in parallel on lamp plate item.
According to mentioned above principle, there can also be different connection types, be not listed one by one.
The above is only some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement should be regarded as the guarantor of the present invention
Protect range.
Claims (7)
1. a kind of white light LEDs lamp bead based on RGB three primary colours chips, which is characterized in that shine including what several were connected in parallel
Unit, each luminescence unit include l R chip being connected in series with, m G chip, n B chip and Zero-ohm resistor, and l, m, n
MeetWhereinFor the luminous flux of R chips,For the luminous flux of G chips,For B chips
Luminous flux, l, m, n are positive integer.
2. the white light LEDs lamp bead according to claim 1 based on RGB three primary colours chips, which is characterized in that R chips, G are brilliant
Gold wire connection is all made of between piece, B chips and Zero-ohm resistor.
3. the white light LEDs lamp bead according to claim 1 based on RGB three primary colours chips, which is characterized in that luminescence unit
Quantity is at least 2.
4. the white light LEDs lamp bead according to claim 1 or 3 based on RGB three primary colours chips, which is characterized in that shine single
The quantity of member meets the following conditions：N=Ie/ie+1, wherein N is the quantity of luminescence unit, and Ie is the rated current of lamp bead, ie
For the rated current of each luminescence unit.
5. the white light LEDs lamp bead according to claim 4 based on RGB three primary colours chips, which is characterized in that luminescence unit
Quantity N ∈ [5,50].
6. the white light LEDs lamp bead according to claim 1 based on RGB three primary colours chips, which is characterized in that each list that shines
Chip in member is arranged to several delta structures, and each chip constitutes isosceles triangle junior unit with other chips, each
Isosceles triangle junior unit includes 1 R chip, 1 G chip and 1 B chip.
7. the white light LEDs lamp bead according to claim 1 based on RGB three primary colours chips, which is characterized in that each list that shines
The connection structure that is in line is arranged in chip in member, and the chip between adjacent light-emitting units is at several delta structures, Mei Gepin
Font junior unit includes 1 R chip, 1 G chip and 1 B chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810641513.9A CN108601157A (en) | 2018-06-21 | 2018-06-21 | A kind of white light LEDs lamp bead based on RGB three primary colours chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810641513.9A CN108601157A (en) | 2018-06-21 | 2018-06-21 | A kind of white light LEDs lamp bead based on RGB three primary colours chips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108601157A true CN108601157A (en) | 2018-09-28 |
Family
ID=63628419
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| CN201810641513.9A Withdrawn CN108601157A (en) | 2018-06-21 | 2018-06-21 | A kind of white light LEDs lamp bead based on RGB three primary colours chips |
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| KR20070040710A (en) * | 2005-10-12 | 2007-04-17 | 엘지.필립스 엘시디 주식회사 | Light emitting package and back light unit and liquid crystal display device having the same |
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Application publication date: 20180928 |