CN101294664A - High color temperature LED light source system and manufacturing method thereof - Google Patents

High color temperature LED light source system and manufacturing method thereof Download PDF

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Publication number
CN101294664A
CN101294664A CNA2008101110234A CN200810111023A CN101294664A CN 101294664 A CN101294664 A CN 101294664A CN A2008101110234 A CNA2008101110234 A CN A2008101110234A CN 200810111023 A CN200810111023 A CN 200810111023A CN 101294664 A CN101294664 A CN 101294664A
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China
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green
source
light
white
light emitting
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张亚衔
林信吾
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AU Optronics Corp
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AU Optronics Corp
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Abstract

The invention discloses an LED light source system, the manufacturing method thereof and the applied backlight module thereof. The LED light source system is mainly composed of a plurality of white light emitting sources and at least one green light emitting source is adulterated among the white light emitting sources. The ratio of the light emitting energy of the green light emitting source to the light emitting energy of the white light emitting sources is ranged from 1/5 to 1/20. The color temperature of the ray outputted by the whole light source system is improved to a certain extent by mixing the green light emitting source and the white light emitting sources in the above energy ratio. The manufacturing method includes the following steps: a plurality of penetration spectrums of the white light emitting sources are obtained; then the penetration spectrums are analyzed to obtain a green light recruitment; and finally at least one green light emitting source is set according to the green light recruitment.

Description

High color temperature LED light source system and manufacture method thereof
Technical field
The invention relates to a kind of LED light source system and manufacture method thereof, and the backlight module that uses this light-source system; Particularly, the present invention system is about a kind of LED light source system and manufacture method thereof with high colour temperature.
Background technology
The display apparatus of display floater and use display floater becomes the main flow of all kinds of display unit gradually.The display screens of flat-plate type monitor, mobile phone and the digital camera of flat-surface television, personal computer and the laptop computer of for example various panel display screen, family expenses etc. are the product of a large amount of use display floaters.Particularly the market demand of liquid crystal indicator is significantly grown up in recent years, and for the fluid,matching crystal device reaches apparent requirement on function, the employed backlight module design of liquid crystal indicator also becomes more diversified.
Be the power consumption of pursuing more frivolous size and saving, light-emitting diode component is used as the source that light is provided by a large amount of.In various light-emitting diode component, white light emitting diode more often is used as the backlight module light source.Commercially available white light emitting diode mostly is with blue chip and excites white fluorescent powder at present, to produce white light.Figure 1 shows that the colourity distribution map of common commercially available white light emitting diode emitted light at present.As shown in Figure 1, this type of white light emitting diode emitted light is between its many boundaries of distribution in the cie color coordinate in (0.261,0.222) to (0.268,0.234).Because this chromaticity range has relatively low colour temperature than being partial to low color temperature regions, therefore representing this type of white light emitting diode the white light that is sent relatively in the white light scope.
With the undersized display panels of tradition, make light source and the no problem of the white light of the low colour temperature of apparatus as backlight module.Yet for the display panels of large-size, particularly for the LCD TV panel, because the standard of industry needs the setting of higher color temperature, the white light that therefore makes the low colour temperature of apparatus often causes the problem that does not meet design standard as the light source of backlight module.For example the light of Chan Shenging need reach (0.2788,0.292) in the cie color coordinate the position to obtain the colour temperature performance of 10000K.For solving this problem, how under the situation that increases cost not significantly, to promote the colour temperature of light, be problem to be overcome at present.
Summary of the invention
The object of the present invention is to provide a kind of LED light source system and manufacture method thereof, can produce the output light of higher color temperature.
Another object of the present invention is to provide a kind of LED light source system and manufacture method thereof, can under the situation of control production cost, produce required output light condition.
Another object of the present invention is to provide a kind of backlight module, have the light output of higher color temperature.
LED light source system of the present invention mainly comprises a plurality of white-light emittings source and mix between the white-light emitting source at least one green luminescence source.The ratio of the luminous energy in green luminescence source and white-light emitting source luminous energy is between 1/5 to 1/20.By the green luminescence source and the white-light emitting source of mixing the above-mentioned energy ratio of tool, the colour temperature that is promoted integrated light source system output light acquires a certain degree.Green luminescence source and white-light emitting source can be respectively complete light-emitting diode component, also can be different chips or fluorescent material in the same light-emitting diode component.
LED light source system manufacture method of the present invention comprises the following step: at first obtain the spectrum that penetrates in a plurality of white-light emittings source, with the intensity that obtains light and the relation of wavelength.Secondly analyze and penetrate spectrum to obtain the green glow magnitude of recruitment.According to the green glow magnitude of recruitment at least one green luminescence source is set at last.
Description of drawings
Fig. 1 is the chrominance space distribution schematic diagram of conventional white light light emitting diode;
Fig. 2 a is the first embodiment schematic diagram of LED light source system of the present invention;
Fig. 2 b is the alternate embodiment of Fig. 2 a illustrated embodiment;
Fig. 3 is the side view of Fig. 2 a illustrated embodiment;
Fig. 4 is that the light of green light LED penetrates angle and strength relationship schematic diagram;
Fig. 5 is another alternate embodiment of Fig. 2 a illustrated embodiment;
Fig. 6 a is the second embodiment schematic diagram of LED light source system;
Fig. 6 b enclosed seat is the embodiment schematic diagram of substrate;
Fig. 7 is the 3rd an embodiment schematic diagram of LED light source system;
Figure 8 shows that the embodiment flow chart of LED light source system manufacture method.
[primary clustering symbol description]
210 white light emitting diodes
230 green LEDs
300 blooming pieces
410 independent current sources
510 enclosed seats
530 blue chips
550 encapsulation prisms
571 gold-tinted fluorescent material
573 green glow chips
575 green light fluorescent powders
The specific embodiment
The invention provides a kind of LED light source system and manufacture method thereof, and the backlight module that uses this light-source system.With preferred embodiment, this backlight module feed flow crystal device uses.Yet in different embodiment, this backlight module also can need the device of planar light source to use for computer keyboard, mobile phone button, billboard and other.Furthermore, the present invention more comprises the liquid crystal indicator that uses this light supply apparatus and backlight module.In preferred embodiment, liquid crystal indicator of the present invention comprises a color liquid crystal display arrangement.Yet in different embodiment, liquid-crystal apparatus of the present invention also can comprise monochromatic liquid crystal indicator.In addition, liquid crystal indicator general reference is used the display unit of liquid crystal panel, comprises the LCDs etc. of LCD monitor, mobile phone and digital camera of LCD TV, personal computer and the laptop computer of family expenses.
LED light source system of the present invention mainly comprises a plurality of white-light emittings source and mix between the white-light emitting source at least one green luminescence source.The ratio of the luminous energy in green luminescence source and white-light emitting source luminous energy is between 1/5 to 1/20.By the green luminescence source and the white-light emitting source of mixing the above-mentioned energy ratio of tool, the colour temperature that is promoted integrated light source system output light acquires a certain degree, for example can be in the cie color coordinate obtain the colour temperature performance of 10000K on the position of (0.2788,0.292).This energy ratio preferable can luminous flux as representative, be that unit is calculated for example with lumen (Lm).Yet this energy ratio can also be represented in light intensity (Intensity) conduct, and for example the spectrum with green luminescence source and white-light emitting source compares, and can obtain the ratio of both intensity.In addition, this energy ratio can also illumination or briliancy as representative, or the parameter of and tool absoluteness or relativity relevant with energy or index representative, and calculate with other.
In preferred embodiment, the ratio of the luminous energy in green luminescence source and white-light emitting source luminous energy can further be controlled at about 1/10, to obtain preferable result.In addition, green luminescence source and white-light emitting source can be respectively complete light-emitting diode component, also can be different chips or fluorescent material in the same light-emitting diode component.
Fig. 2 a is depicted as first embodiment of LED light source system.In this embodiment, LED light source system is the array that a plurality of light emitting diode is formed.The white-light emitting source is a white light emitting diode 210, and the green luminescence source is a green LED 230.Each green light LED 230 all is provided with and is adjacent to white light emitting diode 210, and is surrounded by white light emitting diode 210.Shown in Fig. 2 a, first row and the 3rd row's light emitting diode are white light emitting diode 210; Second row and the 4th row's light emitting diode then are spaced by white light emitting diode 210 and green light LED 230.In other words, each green light LED 230 around be equipped with white light emitting diode 210.Yet in different embodiment, green light LED 230 can be adjusted according to both energy ratio demands with arrangement mode, order and the density etc. of white light emitting diode 210.For example in Fig. 2 b illustrated embodiment, second row and the 4th row's light emitting diode can be equipped with two white light emitting diodes 210 at per two 230 of adjacent green light LEDs, with the arranging density of reduction green light LED 230 and the light energy of output.
With preferred embodiment, for making green light LED 230 and white light emitting diode 210 mixed light effect is preferably arranged, the illumination of green light LED 230 when output is penetrated the zone and is penetrated region overlapping with the illumination of white light emitting diode 210.As shown in Figure 3, be provided with blooming piece 300 on green light LED 230 and the white light emitting diode 210, region R is penetrated in the illumination of green light LED 230 on blooming piece 300 GBe the R of both sides white light emitting diode 210 W1And R W2Cover.With the LCD is example, and when not being provided with blooming piece 300 as if backlight module, the zone is penetrated in illumination can also the range of exposures representative of light emitting diode on liquid crystal panel.In addition, in preferred embodiment, for making green light LED 230 and white light emitting diode 210 mixed light effect is preferably arranged, full width at half maximum (Full width half maximum) the angle θ of green light LED 230 irradiations is greater than 120 degree.As shown in Figure 4, so-called full width at half maximum angle θ means that can keep half both sides of forward luminous intensity adds up to inclined to one side firing angle degree; In other words, when the inclined to one side firing angle degree of a side is that 60 light when spending still have forward luminous intensity one half, full width at half maximum angle θ is 120 degree.
In alternate embodiment shown in Figure 5, the mode that LED light source system can also light-emitting diode light bar (LED light bar) exists.In this embodiment, can in several white light emitting diodes 210, mix one or more green light LED 230 is set, to promote the colour temperature of whole output light.As shown in Figure 5, green light LED 230 can separate on power supply with white light emitting diode 210, and independently-powered with independent current source 410.By the supply voltage of adjusting independent current source 410 and electric current etc., can control the luminous energy of green light LED 230, and adjust green light LED 230 and the ratio of white light emitting diode 210 on luminous energy simultaneously.
Fig. 6 a is depicted as second embodiment of LED light source system.In this embodiment, LED light source system is single light emitting diode.This light emitting diode comprises enclosed seat 510, blue chip 530 and encapsulation prism 550.Blue chip is arranged in the enclosed seat 510, and encapsulation prism 550 then coats blue chip 530 and is filled in the cavity of this enclosed seat 510.In the embodiment shown in Fig. 6 a, enclosed seat 510 is the cavity of indent, and therefore encapsulating prism 550 can be filled in inside cavity.Yet in alternate embodiment, shown in Fig. 6 b, enclosed seat 510 also can be a substrate, encapsulates prism 550 this moment and coats blue chips 530 and be formed on the enclosed seat 510.
In Fig. 6 a illustrated embodiment, the white-light emitting source is the gold-tinted fluorescent material 571 in the light emitting diode for this reason, is present in the encapsulation prism 550 in the mode of mixed distribution.When blue chip 530 was luminous, light can excite gold-tinted fluorescent material 571 outwards to penetrate white light.The gold-tinted fluorescent material 571 preferable fluorescent material that comprise yttrium-aluminium-garnet (YAG) fluorescent material, silicate (Silicate) fluorescent material or other kind.The green luminescence source then is a green glow chip 573, all is arranged in the enclosed seat 510 with blue chip 530, and is coated by encapsulation prism 550.In preferred embodiment, the emission wavelength of green glow chip 573 is between 515nm and 540nm.When blue chip 530 and green glow chip 573 were all luminous, blue chip 530 excited gold-tinted fluorescent material 571 to penetrate white light, and green glow chip 573 then directly sends green light.When the energy proportion of the energy of white light and green light was suitable, the mixed light of white light and green light can tool promotes the effect of colour temperature.
In addition, shown in Fig. 6 a, green glow chip 573 can separate on power supply with blue chip 530, and independently-powered with independent current source 410.When the power supply of blue chip 530 fixedly the time, gold-tinted fluorescent material 571 promptly can be excited to send the white light of stable energy.Can control luminous energy that green glow chip 573 emit beam, and simultaneously adjust green glow and white light ratio on luminous energy by the supply voltage of adjusting independent current source 410 and electric current etc. this moment.Yet, except that this mode, also can adjust green glow and the ratio of white light on luminous energy by alternate manner.For example change green glow and the ratio of white light on luminous energy in modes such as the concentration of adjusting gold-tinted fluorescent material 571 or proportionings.In addition, this embodiment also can merge use with aforesaid embodiment, to reach different effects.
Figure 7 shows that the 3rd embodiment of LED light source system.In this embodiment, LED light source system also is single light emitting diode.With second embodiment shown in Fig. 6 a different be in, green light fluorescent powder 575 is adopted in the green luminescence source, but not the green glow chip.In other words, in this embodiment, green luminescence source and white-light emitting source are respectively the fluorescent material of green glow and white light, and both be mixed with each other and be distributed in the encapsulation prism 550 in.When blue chip 530 was luminous, light can excite gold-tinted fluorescent material 571 outwards to penetrate white light, and excited green light fluorescent powder 575 outwards to penetrate green lights simultaneously.Green light promptly produces the mixed light effect with white light, to promote whole colour temperature.
Green light fluorescent powder 575 preferable silicates, the Ba of comprising 2SiO 4Or the fluorescent material of other kind.Be the energy ratio of control green glow and white light, can wait the luminous energy that changes green glow by composition, concentration, the quantity of adjusting green light fluorescent powder 575.Because generally speaking the luminous efficiency of green light fluorescent powder 575 is higher, so the preferable energy ratio less than green glow and white light of concentration ratio of green light fluorescent powder 575 and gold-tinted fluorescent material 571, and preferable less than 1/10.Yet when using the lower green light fluorescent powder 575 of luminous efficiency, also can heighten the concentration of green light fluorescent powder 575.In addition, this embodiment also can merge use with aforesaid embodiment, so that the more selection of diversification in the design to be provided.
Figure 8 shows that the embodiment flow chart of LED light source system manufacture method of the present invention.As shown in Figure 8, step 1810 comprises the spectrum that penetrates of obtaining a plurality of white-light emittings source, with the intensity that obtains light and the relation of wavelength.The preferable system of mode that obtains spectrum comprise with experiment method obtain, calculating obtains or otherwise obtain.Embodiment is described as described above, and the white-light emitting source can be independent white light emitting diode, the white fluorescent powder in the light emitting diode or other is applied to the white light source of light emitting diode.The spectrum that penetrates herein is preferably to pass the spectrum that light is analyzed behind the colored filter; Yet in different embodiment, penetrate spectrum and also can comprise with behind the diaphragm that passes backlight module or pass the spectrum that the line behind the liquid crystal layer is analyzed.
In preferred embodiment, when penetrating the spectrum that spectral representation analyzes with light after passing colored filter, this step is preferable to comprise following step: the initial spectrum that obtains the white-light emitting source; Obtain the optical filtering spectrum of chromatic filter layer; And analyze initial spectrum and optical filtering spectrum penetrates spectrum with generation.The mode that obtains initial spectrum and optical filtering spectrum comprise with experiment method obtain, calculating obtains or otherwise obtain.After obtaining initial spectrum and optical filtering spectrum, compare both intensity when each wavelength and in addition analytical calculation, the Strength Changes after deduction filters can produce and penetrate spectrum.
Step 1830 comprises analysis and penetrates spectrum to obtain the green glow magnitude of recruitment.In preferred embodiment, the mode of analysis comprises the spectrum that penetrates that penetrates spectrum and green luminescence source in comparison white-light emitting source, analyzes both spectral shape and intensity distributions.When analyzing, the predeterminable spatial distribution that target is arranged is by the energy proportion of adjusting green luminescence source and white-light emitting source, so that the mixing resultant of both spectrum levels off to the spatial distribution of target.The spatial distribution of this target is preferably to convert in the mode that set to promote the colour temperature degree and obtains.When the green luminescence source penetrate spectrum and penetrating of white-light emitting source when leveling off to the spatial distribution of target after spectrum mixes, can obtain the energy proportion in green luminescence source and white-light emitting source, and obtain the green glow magnitude of recruitment with this ratio.This ratio is preferable between 1/5 to 1/20.The energy ratio in green luminescence source and white-light emitting source preferable can luminous flux as representative, be that unit is calculated for example with lumen (Lm).Yet this energy ratio can also be represented in light intensity (Intensity) conduct, and for example the spectrum with green luminescence source and white-light emitting source compares, and can obtain the ratio of both intensity.In addition, this energy ratio can also illumination or briliancy as representative, or the parameter of and tool absoluteness or relativity relevant with energy or index representative, and calculate with other.
In step 1830, the analysis that penetrates spectrum can also be reached by alternate manner.The for example earlier default colour temperature lifting values of desiring to reach, counter again push off to calculate obtain the green glow magnitude of recruitment that should supply.Yet the ratio of green glow magnitude of recruitment and white-light emitting source luminous energy is also controlled between 1/5 to 1/20, and can further be limited near 1/10 to obtain preferable result.
Step 1850 comprises according to the green glow magnitude of recruitment at least one green luminescence source is set.As previously mentioned, the kind in green luminescence source comprises the green glow chip in green light LED, the light emitting diode, the green light fluorescent powder in the light emitting diode etc.When the green luminescence source is green light LED, can be according to the quantity of required green glow magnitude of recruitment decision green light LED, with the arrangement mode in white-light emitting source etc.In addition, also can be according to the power supply provision parameter of green glow magnitude of recruitment decision green light LED, for example electric current, voltage etc. are with the luminous energy of control green light LED.
In different embodiment, when the green luminescence source was the green glow chip, step 1850 item was contained in blue chip and green glow chip is set in the enclosed seat, and the encapsulation prism is set coated blue chip and green glow chip.Be distributed with gold-tinted fluorescent material in the encapsulation prism; When blue chip was luminous, gold-tinted fluorescent material promptly was excited to send white light.Can determine the power supply provision parameter of this green glow chip in this embodiment according to the green glow magnitude of recruitment, for example electric current, voltage etc. are with the luminous energy of control green light LED.
When green luminescence source and white-light emitting source were the fluorescent material that is mixed in the encapsulation prism, both relative concentration ratios can be determined according to the green glow magnitude of recruitment.Because generally speaking the luminous efficiency of green light fluorescent powder is higher, so the preferable energy ratio less than green glow and white light of the concentration ratio of green light fluorescent powder and gold-tinted fluorescent material, and preferable less than 1/10.Yet when using the lower green light fluorescent powder of luminous efficiency, also can heighten the concentration of green light fluorescent powder.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, being contained in the modification of the spirit of claim and scope and equalization is provided with and all is contained in the scope of the present invention.

Claims (18)

1. a LED light source system uses for a backlight module, it is characterized in that, comprises:
A plurality of white-light emittings source; And
Mix between this a plurality of white-light emittings source at least one green luminescence source; Wherein, the ratio of this green luminescence source luminous energy and this white-light emitting source luminous energy is between 1/5 to 1/20.
2. LED light source system as claimed in claim 1 is characterized in that, the ratio of this green luminescence source luminous energy and this white-light emitting source luminous energy is 1/10.
3. LED light source system as claimed in claim 1, it is characterized in that, this a plurality of white-light emittings source comprises a plurality of white light emitting diodes, this green luminescence source comprises a plurality of green light LEDs, each green light LED is surrounded by a plurality of these white light emitting diodes, and the illumination that forms of those green light LEDs is penetrated the zone and penetrated region overlapping with the illumination that those white light emitting diodes form.
4. LED light source system as claimed in claim 3 is characterized in that, full width at half maximum (the full width half maximum) angle of this green light LED irradiation is greater than 120 degree.
5. LED light source system as claimed in claim 3, it is characterized in that, further comprise an independent current source and be electrically connected those green light LEDs, wherein this independent current source luminous energy of controlling those green light LEDs is to adjust the ratio between itself and white-light emitting energy.
6. LED light source system as claimed in claim 1 is characterized in that, further comprises:
One enclosed seat;
One blue chip is arranged in this enclosed seat; And
One encapsulation prism coats this blue chip and fills this enclosed seat;
Wherein, this white-light emitting source comprises gold-tinted fluorescent material mixed distribution in this encapsulation prism, and this green luminescence source comprises a green glow chip, is arranged in this enclosed seat, and is coated by this encapsulation prism.
7. LED light source system as claimed in claim 6, it is characterized in that, further comprise an independent current source and be electrically connected this green glow chip, wherein when gold-tinted fluorescent material stimulated luminescence, the luminous energy that this independent current source is controlled this green glow chip is to adjust the ratio between itself and white-light emitting energy.
8. LED light source system as claimed in claim 6 is characterized in that the emission wavelength of this green glow chip is between between the 515nm to 540nm.
9. LED light source system as claimed in claim 1 is characterized in that, further comprises:
One enclosed seat;
One blue chip is arranged in this enclosed seat; And
One encapsulation prism coats this blue chip and is formed on this enclosed seat;
Wherein, this white-light emitting source comprises gold-tinted fluorescent material, and this green luminescence source comprises green light fluorescent powder, and this gold-tinted fluorescent material and this green light fluorescent powder mixed together are distributed in this encapsulation prism.
10. LED light source system as claimed in claim 9 is characterized in that, the concentration of this green light fluorescent powder is less than 1/10 of this gold-tinted fluorescent material concentration.
11. the backlight module manufacture method of LED light source system is characterized in that, comprises the following step:
Obtain one of a plurality of white-light emittings source and penetrate spectrum;
Analyze this and penetrate spectrum to obtain a green glow magnitude of recruitment, wherein the ratio of the luminous energy of this green glow magnitude of recruitment generation and this white-light emitting source luminous energy is between 1/5 to 1/20; And
According to this green glow magnitude of recruitment at least one green luminescence source is set.
12. manufacture method as claimed in claim 11 is characterized in that, this white-light emitting source penetrates the spectrum calculation procedure and comprises:
Obtain an initial spectrum in this white-light emitting source;
Obtain an optical filtering spectrum of a chromatic filter layer; And
Analyze this initial spectrum and this optical filtering spectrum penetrates spectrum to produce this.
13. manufacture method as claimed in claim 11 is characterized in that, the luminous energy that this green glow magnitude of recruitment produces and the ratio of this white-light emitting source luminous energy are 1/10.
14. manufacture method as claimed in claim 11, it is characterized in that, this a plurality of white-light emittings source comprises a plurality of white light emitting diodes, this green luminescence source comprises a plurality of green light LEDs, and this a plurality of green luminescences source is provided with step and comprises the quantity that determines this green light LED according to this green glow magnitude of recruitment.
15. manufacture method as claimed in claim 11, it is characterized in that, this a plurality of white-light emittings source comprises a plurality of white light emitting diodes, this green luminescence source comprises a plurality of green light LEDs, and this a plurality of green luminescences source is provided with step and comprises the power supply provision parameter that determines this green light LED according to this green glow magnitude of recruitment.
16. manufacture method as claimed in claim 11 is characterized in that, this a plurality of green luminescences source is provided with step and comprises:
One blue chip is set in an enclosed seat;
This green luminescence source is set in this enclosed seat, and wherein this green luminescence source comprises a green glow chip;
Determine the power supply provision parameter of this green glow chip according to this green glow magnitude of recruitment; And
One encapsulation prism is set to coat this blue chip and fills this enclosed seat; Wherein, this white-light emitting source comprises gold-tinted fluorescent material mixed distribution in this encapsulation prism.
17. manufacture method as claimed in claim 11 is characterized in that, this a plurality of green luminescences source is provided with step and comprises:
One blue chip is set in an enclosed seat;
Determine the relative concentration in this green luminescence source and this white-light emitting source according to this green glow magnitude of recruitment; Wherein this white-light emitting source comprises gold-tinted fluorescent material, and this green luminescence source comprises green light fluorescent powder; And
One encapsulation prism is set to coat this blue chip and fills this enclosed seat; Wherein, this gold-tinted fluorescent material and this green light fluorescent powder mixed distribution are in this encapsulation prism.
18. manufacture method as claimed in claim 11 is characterized in that, this a plurality of green luminescences source is provided with step and comprises:
One blue chip is set in an enclosed seat;
Adjust the spectrum that penetrates in this green luminescence source according to this green glow magnitude of recruitment; Wherein this green luminescence source comprises green light fluorescent powder; And
One encapsulation prism is set to coat this blue chip and fills this enclosed seat; Wherein, this white-light emitting source comprises gold-tinted fluorescent material, and this gold-tinted fluorescent material and this green light fluorescent powder mixed distribution are in this encapsulation prism.
CNA2008101110234A 2008-05-29 2008-05-29 High color temperature LED light source system and manufacturing method thereof Pending CN101294664A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943344A (en) * 2010-09-24 2011-01-12 鸿富锦精密工业(深圳)有限公司 Tricolor mixed LED point light source device
CN101943343A (en) * 2010-09-24 2011-01-12 鸿富锦精密工业(深圳)有限公司 Dual-color mixed-light LED point light source device
CN102052624A (en) * 2009-11-09 2011-05-11 亿光电子工业股份有限公司 Dimmer lighting assembly and manufacturing method thereof
CN102800789A (en) * 2011-05-27 2012-11-28 东芝照明技术株式会社 Light-emitting module and lighting apparatus
CN108257948A (en) * 2017-12-29 2018-07-06 广东晶科电子股份有限公司 White light emitting diode and backlight module
CN108983466A (en) * 2017-05-31 2018-12-11 群创光电股份有限公司 Show equipment
CN110456565A (en) * 2019-07-31 2019-11-15 上海天马微电子有限公司 Backlight module and manufacturing method, display module and manufacturing method and display device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102052624A (en) * 2009-11-09 2011-05-11 亿光电子工业股份有限公司 Dimmer lighting assembly and manufacturing method thereof
CN101943344A (en) * 2010-09-24 2011-01-12 鸿富锦精密工业(深圳)有限公司 Tricolor mixed LED point light source device
CN101943343A (en) * 2010-09-24 2011-01-12 鸿富锦精密工业(深圳)有限公司 Dual-color mixed-light LED point light source device
CN102800789A (en) * 2011-05-27 2012-11-28 东芝照明技术株式会社 Light-emitting module and lighting apparatus
CN108983466A (en) * 2017-05-31 2018-12-11 群创光电股份有限公司 Show equipment
CN108257948A (en) * 2017-12-29 2018-07-06 广东晶科电子股份有限公司 White light emitting diode and backlight module
CN108257948B (en) * 2017-12-29 2024-03-26 广东晶科电子股份有限公司 White light LED and backlight module
CN110456565A (en) * 2019-07-31 2019-11-15 上海天马微电子有限公司 Backlight module and manufacturing method, display module and manufacturing method and display device

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