CN104710766A - Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof - Google Patents
Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof Download PDFInfo
- Publication number
- CN104710766A CN104710766A CN201510108634.3A CN201510108634A CN104710766A CN 104710766 A CN104710766 A CN 104710766A CN 201510108634 A CN201510108634 A CN 201510108634A CN 104710766 A CN104710766 A CN 104710766A
- Authority
- CN
- China
- Prior art keywords
- white light
- rare
- uvioresistant
- fluorescent
- earth fluorescent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 28
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004417 polycarbonate Substances 0.000 title abstract 6
- 229920000515 polycarbonate Polymers 0.000 title abstract 2
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 11
- 239000003112 inhibitor Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000004533 oil dispersion Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001556 precipitation Methods 0.000 abstract description 2
- 230000006750 UV protection Effects 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 230000002045 lasting effect Effects 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000005286 illumination Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 238000010008 shearing Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 206010020751 Hypersensitivity Diseases 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005090 crystal field Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- GNOIPBMMFNIUFM-UHFFFAOYSA-N hexamethylphosphoric triamide Chemical compound CN(C)P(=O)(N(C)C)N(C)C GNOIPBMMFNIUFM-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000007539 photo-oxidation reaction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- 238000005618 Fries rearrangement reaction Methods 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000009725 powder blending Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7706—Aluminates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses an anti-ultraviolet rare earth fluorescent PC (polycarbonate) for a white light LED (light-emitting diode) and a preparation method thereof3+Improving the excitation of the YAG fluorescent powder by blue lightThe stability of the white light is achieved, the precipitation of an ultraviolet absorbent in the PC is effectively prevented, and the ultraviolet resistance of the invention can be improved by the synergistic compatibility of the white light and the YAG and the PC. The invention slows down the performance decline of the rare earth fluorescent powder, prolongs the outdoor service life and ensures that the white light LED lamp has lasting and excellent light-emitting effect.
Description
[technical field]
The present invention relates to a kind of white light LEDs fluorescence PC and preparation method thereof, particularly relate to a kind of white light LEDs uvioresistant rare-earth fluorescent PC and preparation method thereof.
[background technology]
LED adopts fluorescent material to realize white light and mainly contains three kinds of methods, but they do not have fully matured, seriously affect the application of white light LEDs at lighting field thus.
Specifically, first method is that coating can by blue-light excited yellow fluorescent powder on blue LED die, and the blue light that chip sends and the gold-tinted that fluorescent material sends complementation form white light.This technology is by Japanese Nichia company monopolizing, and the shortcoming of this scheme principle is exactly Ce in this fluor
3+the emmission spectrum of ion does not have a continuous spectrum characteristic, and color developing is poor, and be difficult to the requirement meeting the illumination of low colour temperature, luminous efficiency is high not enough simultaneously, needs to be improved by the high-efficiency fluorescence powder of development of new.
Second method is coating green and red fluorescence powder on blue LED die, and the green glow that the blue light sent by chip and fluorescent material are sent and ruddiness compound obtain white light, and color developing is better.But the effective efficiency of conversion of this method fluorescent material used is lower, especially the efficiency of red fluorescence powder needs raising by a relatively large margin.
The third method purple LED chip applies three primary colors fluorescent powder (fluorescent material of multiple color), the long wave ultraviolet light of this chip emission (370nm ~ 380nm) or purple light (380nm ~ 410nm) is utilized to carry out excitated fluorescent powder and realize white light emission, the method color developing is better, but same exist the problem similar with second method, and the redness that efficiency of conversion is higher at present and green emitting phosphor mostly are sulfide systems, this kind of light-emitting phosphor poor stability, light decay are larger.When LED works, chip is heated and distributes a large amount of heat, and the temperature of chip circumference raises rapidly, thus makes LED have obvious light decay, affects the life-span of luminous efficiency and LED.
Current up-to-date white LED lamp manufacturing technology causes fluorescent RE powder performance degradation to solve the rising of LED chip surrounding temperature thus makes the problem that LED luminous efficiency declines, take the method for PC resin and fluorescent RE powder blending and modifying to substitute method that conventional fluorescent powder applies LED chip, rare-earth fluorescent PC after blending and modifying is made as lampshade, make fluorescent RE powder away from LED chip, solve the too high problem causing fluorescent RE powder performance degradation of LED chip surrounding temperature, but PC resin resistance ultraviolet capability is poor, passing in time illumination effect can be affected because of the variable color of PC when the LED that this method obtains uses out of doors.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, provide one can to slow down fluorescent RE powder performance degradation, extend outdoor work-ing life, the white light LEDs uvioresistant rare-earth fluorescent PC that illumination effect is excellent lastingly.
Another object of the present invention is to provide the preparation method of a kind of above-mentioned uvioresistant rare-earth fluorescent PC.
The present invention to achieve these goals, by the following technical solutions:
A kind of white light LEDs uvioresistant rare-earth fluorescent PC, is characterized in that being made up of following weight percent composition:
A kind of white light LEDs uvioresistant rare-earth fluorescent PC of the present invention, further optimum ratio is for be made up of following heavy percent composition:
Light diffusing agent in the present invention is organosilicon light diffusing agent.
Oxidation inhibitor in the present invention is preferably oxidation inhibitor 2921.
Lubricant in the present invention is preferably lubricant PETS.
Dispersion agent in the present invention is preferably silicone oil dispersion agent.
Middle-ultraviolet lamp absorption agent UVHPT of the present invention is HMPA.
YAG fluorescent powder major ingredient is Y
3al
5o
12, according to rare earth luminous theory, yellow emission peak (583nm) the corresponding Dy in Dy:YAG emmission spectrum
3+'s
4f
9/2→
6h
13/2transition (difference (△ L)=2 of total orbital quantum number, the difference (△ J)=2 of total angular momentum quantum number), belong to hypersensitive transition, the impact being subject to crystal field environment is around larger; And blue emission peak (481nm) corresponding Dy
3+'s
4f
9/2→
6h
15/2transition belongs to non-hypersensitive transition, is subject to the impact of the crystal field of residing environment around hardly, whether belongs to hypersensitive transition and Dy
3+residing crystal field symmetry is relevant, works as Dy
3+when replacing the case of low-symmetry, corresponding in emmission spectrum
4f
9/2→
6h
13/2the yellow light intensity of transition is stronger; And it is corresponding in (having inversion center of symmetry) emmission spectrum when replacement has symmetric case
4f
9/2→
6h
15/2the blue light strength of transition is stronger; In the crystalline structure of YAG, Y
3+the position occupied has D
2symmetry, D
2symmetry and D
2hsymmetry is similar, all has an inversion center of symmetry, therefore works as Dy
3+replace Y in YAG matrix
3+position time, in the emmission spectrum of DY:YAG, blue light strength is higher than yellow light intensity, obviously along with Dy
3+in YAG crystalline structure change in location finally can affect YAG excited after luminous effect, but Dy
3+mainly YAG produces under the irradiation of UV-light (353nm), so will produce Dy when being subject to UV-irradiation when YAG white-light LED fluorescence PC uses out of doors
3+, thus affect YAG fluorescent powder by the stability emitted white light after blue-light excited; When in white light rare-earth fluorescent PC material, PC resin is subject to the irradiation of length ultraviolet light of about 290nm in atmosphere in addition, photooxidation resistance can be there is, Fries rearrangement can be there is produce free radical under light and oxygen effect, bring out PC molecular chain photooxidation droping, the structure of PC material is changed, shock strength and toughness reduce, and tensile strength and flexural strength improve.The present invention considers to select the reason of UV light absorber UVHPT (HMPA) to be that it effectively can absorb the UV-light of 270-380nm wavelength, except effectively guaranteeing to excite YAG to produce Dy
3+353nm UV-light outside; effectively can also absorb about the 290nm length ultraviolet light making PC produce the reaction of light oxygen; good uvioresistant provide protection can be played; UVHPT (HMPA) is better with PC resin compatible in addition; effectively can prevent the precipitation of UV light absorber, can be good at working in coordination with compatibility with YAG and PC and improve uvioresistant performance of the present invention.
The preparation method of a kind of white light LEDs uvioresistant of the present invention rare-earth fluorescent PC, is characterized in that comprising the following steps:
By PC, oxidation inhibitor, lubricant and dispersant evenly after put into twin screw extruder melt blending, feed melt blending by side mode of feeding third from the bottom the saving of twin screw extruder after YAG type fluorescent RE powder and light diffusing agent being pre-mixed, obtain white light LEDs uvioresistant rare-earth fluorescent PC.
Preferably, side feeding section to twin-screw extrusion machine head section screw combinations adopts low sheraing combination, and the shearing force that namely YAG type fluorescent RE powder and light diffusing agent premixture are subject in twin screw extruder is less than the shearing force that in leading portion, other components are subject to.
Further preferably, twin screw extruder has 8 joint cylindrical shells, and the premixture of YAG type fluorescent RE powder and light diffusing agent feeds in Section 6 side of twin screw extruder, and dual-screw-stem machine Section 6 adopts low sheraing combination to Section 8 cylindrical shell.
The present invention adopts side feeding manner to add YAG type fluorescent RE powder and light diffusing agent, fluorescent RE powder and light diffusing agent are only subject to the shearing of three joint cylindrical shells, guarantee that YAG type fluorescent RE powder and light diffusing agent microballoon can not be subject to undue shearing and damaged, affect illumination effect.
The present invention has following advantage relative to prior art:
The present invention compares traditional YAG type white light LEDs material, effectively can suppress D y in the agent of YAG rare-earth fluorescent
3+generation, when guaranteeing that YAG fluorescent RE powder is subject to blue-light excited, the light of invariable colour coordinate can be produced, guarantee that the final white light produced is reliable and stable.
The present invention, according to the light stability mechanism of YAG fluorescent RE powder and PC resin, have selected UVHPT as photostabilizer, the ultraviolet absorption scope of its 270-380nm, can meet the uvioresistant demand of PC resin and YAG fluorescent RE powder simultaneously.
The present invention adds YAG type fluorescent RE powder and light diffusing agent by side feeding and reduces the shearing force of melt blending, ensures that the mixing micro-sphere structure of YAG type fluorescent RE powder and light diffusing agent has good illumination effect.
[embodiment]
Below in conjunction with specific embodiment, the present invention is described in further detail:
The each weight percentages of components of white light LEDs uvioresistant rare-earth fluorescent PC of embodiment 1-6 is as shown in table 1:
Table 1:
The preparation method of embodiment 1-3 is: by PC, oxidation inhibitor, lubricant and dispersant evenly after put into the twin screw extruder melt blending of 8 joint cylindrical shells, feed melt blending extrusion moulding by side mode of feeding in forcing machine Section 6 after YAG type fluorescent RE powder and light diffusing agent being pre-mixed, obtain uvioresistant rare-earth fluorescent PC.
The preparation method of embodiment 4-6 is: by PC, oxidation inhibitor, lubricant and dispersant evenly after put into the twin screw extruder melt blending of 9 joint cylindrical shells, feed melt blending extrusion moulding by side mode of feeding in forcing machine Section 7 after YAG type fluorescent RE powder and light diffusing agent being pre-mixed, obtain uvioresistant rare-earth fluorescent PC.
Wherein in embodiment 1-6, twin screw pusher side feeding to head section spiro rod section is low sheraing combination.
It is as shown in table 2 that embodiment of the present invention 1-6 irradiates performance after 1000 hours under fluorescent ultraviolet lamp:
Table 2:
Embodiment of the present invention 1-6 is as shown in table 3 in fluorescent ultraviolet lamp pre-irradiation performance:
Table 3:
The mechanical property not obvious degradation phenomena at embodiment of the present invention 1-6 after 1000 hours UV illumination can be found out by table 2 and table 3 Data Comparison, elongation and shock strength conservation rate are more than 95%, this aspect embodiment 1-6 is after 1000 hours UV illumination in addition, still send normal white light, transmittance and mist degree do not have deterioration.So material of the present invention uses under UV-irradiation out of doors steadily in the long term.
Claims (9)
1. a white light LEDs uvioresistant rare-earth fluorescent PC, is characterized in that being made up of following weight percent composition:
2. a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 1, is characterized in that being made up of following weight percent composition:
3. a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 1 and 2, is characterized in that described light diffusing agent is organosilicon light diffusing agent.
4. a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 1 and 2, is characterized in that described oxidation inhibitor is 2921 oxidation inhibitor.
5. a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 1 and 2, is characterized in that described lubricant is PETS lubricant.
6. a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 1 and 2, is characterized in that described dispersion agent is silicone oil dispersion agent.
7. the preparation method of uvioresistant rare-earth fluorescent PC of the white light LEDs described in claim 1 or 2, is characterized in that comprising the following steps:
By PC, oxidation inhibitor, lubricant and dispersant evenly after put into twin screw extruder melt blending, feed melt blending by side mode of feeding third from the bottom the saving of twin screw extruder after YAG type fluorescent RE powder and light diffusing agent being pre-mixed, obtain white light LEDs uvioresistant rare-earth fluorescent PC.
8. the preparation method of a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 7, is characterized in that described side feeding section to twin-screw extrusion machine head section screw combinations adopts low sheraing combination.
9. the preparation method of a kind of white light LEDs uvioresistant rare-earth fluorescent PC according to claim 7, it is characterized in that described twin screw extruder has 8 joint cylindrical shells, the premixture of described YAG type fluorescent RE powder and light diffusing agent feeds in Section 6 side of twin screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108634.3A CN104710766B (en) | 2015-03-12 | 2015-03-12 | Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108634.3A CN104710766B (en) | 2015-03-12 | 2015-03-12 | Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104710766A true CN104710766A (en) | 2015-06-17 |
| CN104710766B CN104710766B (en) | 2016-08-17 |
Family
ID=53410512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510108634.3A Active CN104710766B (en) | 2015-03-12 | 2015-03-12 | Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104710766B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633750A (en) * | 2015-11-02 | 2017-05-10 | 丹阳市米可汽车零部件厂 | Method for manufacturing car light lampshade |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337017A (en) * | 2011-08-17 | 2012-02-01 | 金发科技股份有限公司 | Polycarbonate composition with LED (Light-emitting Diode) photoconversion function and application thereof |
| CN102532854A (en) * | 2012-01-17 | 2012-07-04 | 中山赛特工程塑料有限公司 | Rare-earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method of rare-earth fluorescent PC |
| CN103319871A (en) * | 2013-05-30 | 2013-09-25 | 傅轶 | Remotely-excited fluorescent polycarbonate composite material and preparation method thereof |
-
2015
- 2015-03-12 CN CN201510108634.3A patent/CN104710766B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337017A (en) * | 2011-08-17 | 2012-02-01 | 金发科技股份有限公司 | Polycarbonate composition with LED (Light-emitting Diode) photoconversion function and application thereof |
| CN102532854A (en) * | 2012-01-17 | 2012-07-04 | 中山赛特工程塑料有限公司 | Rare-earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method of rare-earth fluorescent PC |
| CN103319871A (en) * | 2013-05-30 | 2013-09-25 | 傅轶 | Remotely-excited fluorescent polycarbonate composite material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633750A (en) * | 2015-11-02 | 2017-05-10 | 丹阳市米可汽车零部件厂 | Method for manufacturing car light lampshade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104710766B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101946115B (en) | Gls-alike led light source | |
| CN101387379B (en) | Plant growth lamp of high-efficiency high-power LED light source | |
| CN102792473B (en) | White light illumination device | |
| TW200801159A (en) | Phosphor, method for producing the same, phosphor-containing composition, light-emitting device, image display, and illuminating device | |
| CN202598208U (en) | White light light-emitting diode (LED) with adjustable color-temperature and color-rendering index | |
| EP3997733A1 (en) | Full spectrum white light emitting devices | |
| CN102095093A (en) | Novel high-power LED (light emitting diode) integrated light source | |
| CN101872825A (en) | Novel method for preparing high-power white LED with low color temperature and high color rendering property | |
| CN101858492A (en) | LED illumination device and application thereof in lamp | |
| CN102532854B (en) | Rare-earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method of rare-earth fluorescent PC | |
| CN102211867B (en) | Silver-europium co-doped alkali aluminum phosphate glass and preparation method thereof | |
| CN108314332B (en) | Far-red fluorescent glass ceramic, preparation method thereof and plant lamp | |
| CN104710766A (en) | Ultraviolet-resistant rare earth fluorescent PC (polycarbonate) for white light LED (light-emitting diode) and preparation method thereof | |
| CN201875453U (en) | High-CRI (color rendering index) high-lighting effect LED (light-emitting diode) bulb | |
| CN117383824A (en) | Fluorescent glass material for high-power LED, and preparation method and application thereof | |
| JP4752067B2 (en) | Phosphor for light emitting diode | |
| CN204648124U (en) | A kind of ultraviolet LED lamp | |
| CN201992383U (en) | Led lamp | |
| EP2546896B1 (en) | White light emitting diode (led) lighting device driven by pulse current | |
| CN202791846U (en) | Simulated sunlight spectrum integrated optical source | |
| CN102558820B (en) | Rare earth fluorescent poly carbonate (PC) and preparation method thereof | |
| CN100462621C (en) | Luminous diode transmitting white light | |
| CN109929555A (en) | A kind of borophosphate white fluorescent powder and its preparation method and application | |
| CN201944630U (en) | Heat-dissipation-type high-power light-emitting diode (LED) lamp | |
| CN109250910B (en) | Fluorescent glass material, preparation method thereof, lampshade and plant lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170721 Address after: 528300, Foshan District, Guangdong City, Shunde Province town (street) Jane village, two ring road, South 02 plots Patentee after: GUANGDONG SUNWILL SAITECH ENGINEERING PLASTICS DEVELOPMENT CO., LTD. Address before: 528400, 2, Dayan South Road, Dayan industrial area, Huang Zhen Town, Guangdong, Zhongshan Patentee before: Zhongshan Saite Engineering Plastic Co., Ltd. |