CN103589431A - Red phosphor paste powder for plasma display panels - Google Patents

Red phosphor paste powder for plasma display panels Download PDF

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Publication number
CN103589431A
CN103589431A CN201310580682.3A CN201310580682A CN103589431A CN 103589431 A CN103589431 A CN 103589431A CN 201310580682 A CN201310580682 A CN 201310580682A CN 103589431 A CN103589431 A CN 103589431A
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red fluorescence
powder
mass percent
fluorescence powder
powder slurry
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CN201310580682.3A
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金焱
聂思永
段冰
陈富贵
彭钦华
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Sichuan COC Display Devices Co Ltd
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Sichuan COC Display Devices Co Ltd
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Abstract

The invention belongs to the technical field of electronic paste, and particularly relates to a red phosphor paste powder for plasma display panels (PDPs). The red phosphor paste powder for the PDPs is characterized in that the powder consists of (Y, Gd) O3 and (Y, Eu) (PV) O4, and accounts for 20 to 40 percent of the total weight of red phosphor paste; based on the total mass of the red phosphor paste, the mass percent of (Y, Gd) O3 is 14 to 35.5, and the mass percent of (Y, Eu) (PV) O4 is 4.5 to 14. The red phosphor paste powder for the PDPs has the advantages that (Y, Gd) BO3: Eu is replaced with (Y, Gd) O3 with a lower cost, and the percentage of (Y, Gd) O3 is increased on the basis of the unchanged total phosphor powder solid content, so as to further reduce the costs of the phosphor paste.

Description

A kind of used for plasma display screen red fluorescence powder slurry powder
Technical field
The invention belongs to electric slurry technical field, relate in particular to a kind of used for plasma display screen red fluorescence powder slurry powder.
  
Background technology
Plasma panel is that a kind of geseous discharge that utilizes carries out the flat-panel display device from main light emission, by a large amount of plasma cell, is rearranged, and each discharge cell consists of bus electrode, medium protective layer, barrier structure, fluorescent material, rare gas element.When the bus electrode covering under medium protective layer adds high pressure; be enclosed in rare gas element in barrier structure and be discharged the UV-light that can launch 140~200nm after exciting; thereby the UV-light producing excites the red-green-blue phosphor powder layer of barrier structure inwall; send visible ray, by colored demonstration of control realization of drive waveforms.。
The Main Function of fluorescent material in plasma panel is to send visible ray under ultraviolet excitation.Fluorescent material technology of preparing is one of core technology of preparing of plasma panel, directly affects the quality of plasma panel.
When but fluorescent powder paste material is made, be subject to the impact of the cost of material own, in three-color phosphor, the price of red fluorescence powder is the highest, its price has even surpassed the price of closing of green emitting phosphor slurry and the blue phosphor slurry of identical weight, from the angle of accounting cost control, make a kind of performance suitable, lower-cost red fluorescence powder slurry manufactures instinct and plays great role reducing.But, the luminophore of directly evaluating with eyes as human consumer, the quality of phosphor material powder is directly determining the quality of PDP.So how to reduce the cost of red fluorescence powder, can keep quality again, be the problem of present required solution.
  
Summary of the invention
For solving above technical problem, the invention provides low of a kind of one-tenth, performance can meet again the red fluorescence powder slurry powder of plasma panel to fluorescent material necessary requirement.
Solve a kind of used for plasma display screen red fluorescence powder slurry powder in the present invention of above technical problem, it is characterized in that: described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for the 20-40% of red fluorescence powder slurry gross weight;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 14-35.5%, and (Y, Eu) be O (PV) 4mass percent is 4.5%-14%.
Optimization of C/C composites is that described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for the 30-33% of red fluorescence powder slurry gross weight, wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 20-28%, and (Y, Eu) be O (PV) 4mass percent is 5%-10%.
Described red fluorescence powder slurry is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 60%-80% and adjusting adhesive mass percent be 0.1%-2%.
In described organic carrier, contain the polymkeric substance of mass percent 3%-15%, the film coalescence aid of the organic solvent of 76%-95%, 3%-16% and the hyper-dispersant of 0.1%-0.9%.
Described organic carrier is comprised of resin, organic solvent, film coalescence aid and hyper-dispersant, polymkeric substance is ethyl cellulose, organic solvent is Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.
Described adjusting adhesive is oleic acid.
Described organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
The chromaticity coordinates that in the present invention, use cost is lower is at the XXm of (0.643 ± 0.01,0.337 ± 0.01), medium particle diameter 3.0 ± 1.0um, specific surface area 2(Y, Gd) O of/g 3replace (Y, Gd) B 3o:Eu, and in the situation that total fluorescent material powder solid content is constant, increase (Y, Gd) O 3ratio, the cost of minimizing fluorescent powder paste material.And make (Y, Gd) O 3> (Y, Eu) is O (PV) 4proportion.Use sunset glow shorter, (Y, Gd) O that price is more cheap 3fluorescent material powder replaces (Y, Gd) BO 3: Eu fluorescent material powder, further reduces the cost of fluorescent powder paste material.
Can reduce the cost of red fluorescence powder slurry: three kinds of its prices of red fluorescence powder of above-mentioned narration are (Y, Eu) (PV) O 4> (Y, Gd) BO 3: Eu > (Y, Gd) O 3, and in the front slurry of change, powder ratio is (Y, Eu) (PV) O 4> (Y, Gd) BO 3: Eu=(Y, Gd) O 3, in slurry of the present invention, powder ratio is (Y, Gd) O 3: > Y, Eu) (PV) O 4.
In the composition of slurry, the price of fluorescent material powder is far above the price of carrier and solvent, and therefore, the solid content that reduces slurry will significantly reduce material cost, improve the competitive power of PDP screen.Under present case, (Y, Eu) be O (PV) 4(Y, Gd) O 3: the price of two kinds of powders of Eu is respectively 2136 yuan/Kg and 1581 yuan/Kg, and their proportionings in slurry are 8:2, the solid content of the red fluorescence powder slurry using in tradition volume production is 36%~37%, and the solid content of novel slurry is only 32%-33%, powder usage quantity has declined approximately 4%, approximately 81 yuan of the cost savings of per kilogram slurry.
Red fluorescence powder slurry powder in the present invention, becomes low, and performance can meet again plasma panel to fluorescent material necessary requirement.
Embodiment
Embodiment 1
Powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, accounting for red fluorescence powder slurry total mass per-cent is 20%;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 14%, and (Y, Eu) be O (PV) 4mass percent is 6%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 79.8% and adjusting adhesive mass percent be 0.2%.
In organic carrier containing the polymkeric substance of mass percent 15%, 76% organic solvent, 8.9% film coalescence aid and 0.1% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Red fluorescence powder is by Y (P, V) O 4: Eu and (Y, Gd) O 3mixing makes, and can effectively reduce the time of persistence of fluorescent material, can complete respectively the demonstration of two pictures in left and right within the cycle of every 16.67ms, realizes 3D PDP display display effect.
Polymkeric substance is solid composition main in organic carrier, and for fluorescent powder paste material provides film-forming properties, good dispersion fluorescent material, for phosphor particles provides bonding force, gives the flow leveling of fluorescent powder paste material, is conducive to the spraying property of fluorescent powder paste material.Fluorescent powder paste material has higher requirement to the selection of polymkeric substance, mainly comprises: adhesive property is good, be easy to be dissolved in various organic solvents, carbon residual volume is few.
The Main Function of organic solvent is to dissolve high molecular polymer, moistening and disperse fluorescent material, adjusts the solid content of fluorescent powder paste material, improves the flow leveling of fluorescent powder paste material.Fluorescent powder paste material has higher requirement to the selection of organic solvent, mainly comprises: favorable solubility, spraying property are good, wettability well, not volatile, moderate boiling point.Performance requriements more than meeting because organic solvent is very difficult separately, the present invention selects Terpineol 350, Diethylene Glycol butyl ether, three kinds of organic solvents of Diethylene Glycol butyl ether acetic ester to carry out Mixed adjustment.
The Main Function of film coalescence aid is the Van der Waals force weakening between polymer molecule, reduce the crystallinity of polymer molecular chain, increase the plasticity of polymkeric substance, improve elongation, flexibility and the snappiness of polymkeric substance, improve the film forming properties of fluorescent powder paste material, make fluorescent powder paste material face smooth, smooth.The present invention selects dibutyl phthalate and two kinds of film coalescence aid of lauryl alcohol ester to carry out Mixed adjustment.
In order to improve the defects such as plug-hole in fluorescent powder paste material spraying process, drain spray, the present invention adds succinic acid series hyper-dispersant in organic carrier.
Hyper-dispersant can be adsorbed onto the combination functional group of particle surface and can provide the polymer segment of stable space steric hindrance to form by one.
Pbz polymer segment in hyper-dispersant, more stable than traditional fatty acid dispersion agent, be more conducive to prevent that solidifying wadding from occurring.
In fluorescent powder paste material, add hyper-dispersant, be conducive to stop or slow down the settling velocity of fluorescent material in slurry, strengthen the dispersiveness of fluorescent material, after sedimentation occurs, easily again stir.
Oleic acid, for fluorescent powder paste material viscosity is adjusted, improves the spraying adaptive of fluorescent powder paste material.
Embodiment 2
Powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, accounting for red fluorescence powder slurry total mass per-cent is 40%;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 26%, and (Y, Eu) be O (PV) 4mass percent is 14%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 59.6% and adjusting adhesive mass percent be 0.4%.
In organic carrier containing the polymkeric substance of mass percent 15%, 76% organic solvent, 8.9% film coalescence aid and 0.1% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 3
Powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, accounting for red fluorescence powder slurry total mass per-cent is 35%;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 30.5%, and (Y, Eu) be O (PV) 4mass percent is 4.5%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 64% and adjusting adhesive mass percent be 1%.
In organic carrier containing the polymkeric substance of mass percent 15%, 76% organic solvent, 8.9% film coalescence aid and 0.1% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 4
Powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, accounting for red fluorescence powder slurry total mass per-cent is 40%;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 35.5%, and (Y, Eu) be O (PV) 4mass percent is 4.5%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 59.5% and adjusting adhesive mass percent be 0.5%.
In organic carrier containing the polymkeric substance of mass percent 15%, 76% organic solvent, 8.9% film coalescence aid and 0.1% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 5
Described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for 30% of red fluorescence powder slurry gross weight, wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 20%, and (Y, Eu) be O (PV) 4mass percent is 10%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 69% and adjusting adhesive mass percent be 1%.
In organic carrier containing the polymkeric substance of mass percent 15%, 76% organic solvent, 8.9% film coalescence aid and 0.1% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 6
Described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for 33% of red fluorescence powder slurry gross weight, wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 28%, and (Y, Eu) be O (PV) 4mass percent is 5%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 65% and adjusting adhesive mass percent be 2%.
In organic carrier containing the polymkeric substance of mass percent 6.1%, 90% organic solvent, 3% film coalescence aid and 0.9% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 7
Described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for 32% of red fluorescence powder slurry gross weight, wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 25%, and (Y, Eu) be O (PV) 4mass percent is 7%.
In application the present invention, the red fluorescence powder slurry of powder is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent be 67.9% and adjusting adhesive mass percent be 0.1%.
In organic carrier containing the polymkeric substance of mass percent 3.5%, 80% organic solvent, 16% film coalescence aid and 0.5% hyper-dispersant.Wherein polymkeric substance is ethyl cellulose, and organic solvent is the mixture of Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, and hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.Adjusting adhesive is oleic acid,
Organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
Embodiment 8
After by mass percentage the hyper-dispersant of 3% polymkeric substance ethyl cellulose, 93% organic solvent Terpineol 350 and Diethylene Glycol butyl ether acetic ester, 3.5% film coalescence aid dibutyl phthalate and 0.5% being mixed, put in whipping device, 70 ℃ of-150 ℃ of heating in water bath, 100-200rpm speed stirs 10-15 hour, obtains organic carrier; Then by mass percentage by 30% Y (P, V) O 4: Eu and (Y, Gd) O of 70% 3mix, obtain red fluorescence powder; Finally by mass percentage 40% red fluorescence powder is mixed with 59% organic carrier, under 50-80rpm rotating speed, stir 3-6 hour, adjust solid content, after three-high mill grinding distribution, adding weight percent is that 1% oleic acid is adjusted viscosity.
Fluorescent material adopts solid-phase synthesis preparation, after porphyrize mixes, 900 ℃ of-1500 ℃ of sintering 8 hours, obtains sample.
Use rouge and powder in the present invention coordinate the powder allotment slurry of ratio adjustment and be applied to the making that PDP shields, the screen contrast that its optical characteristics and conventional powder are made is as shown in the table:
Figure 2013105806823100002DEST_PATH_IMAGE001
Three kinds of red fluorescence powder Y (P, V) O 4: Eu, (Y, Gd) O 3, (Y, Gd) BO 3: in Eu, relative brightness is (Y, Gd) O respectively 3≈ (Y, Gd) O 3> Y (P, V) O 4: Eu, therefore improve (Y, Gd) O in wet end furnish 3during content, improve Red Square brightness, and then improve white brightness.In this testing size, (Y, Gd) O3 content is higher, and Red Square brightness is compared and improved 18.32% with contrast screen.
The luminophore of directly evaluating with eyes as human consumer, the quality of phosphor material powder is directly determining the quality of PDP.Fluorescent powder paste material is comprised of powder, organic solvent, carrier and dispersion agent, by processing steps such as pre-mixing, viscosity reduction degree, three three rollers, stirring, filtration and deaerations, makes slurry.The effect of slurry is that fluorescent material powder is scattered in carrier and solvent, and then the mode by spraying uniformly sprays in each cell on substrate.In the composition of slurry, the price of fluorescent material powder is far above the price of carrier and solvent, and therefore, the solid content that reduces slurry will significantly reduce material cost, improve the competitive power of PDP screen.Under present case, (Y, Eu) be O (PV) 4(Y, Gd) O 3: the price of two kinds of powders of Eu is respectively 2136 yuan/Kg and 1581 yuan/Kg, and their proportionings in slurry are 8:2, the solid content of the red fluorescence powder slurry using in tradition volume production is 36%~37%, and the solid content of novel slurry is only 32%-33%, powder usage quantity has declined approximately 4%, approximately 81 yuan of the cost savings of per kilogram slurry.

Claims (7)

1. a used for plasma display screen red fluorescence powder slurry powder, is characterized in that: described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, accounting for red fluorescence powder slurry total mass per-cent is 20-40%;
Wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 14-35.5%, and (Y, Eu) be O (PV) 4mass percent is 4.5%-14%.
2. a kind of used for plasma display screen red fluorescence powder slurry powder according to claim 1, is characterized in that: described powder is by (Y, Gd) O 3(Y, Eu) be O (PV) 4form, account for the 30-33% of red fluorescence powder slurry gross weight, wherein, with red fluorescence powder slurry total mass, calculate (Y, Gd) O 3mass percent is 20-28%, and (Y, Eu) be O (PV) 4mass percent is 5%-10%.
3. a kind of used for plasma display screen red fluorescence powder slurry powder according to claim 1 and 2, it is characterized in that: described red fluorescence powder slurry is comprised of powder, organic carrier and adjusting adhesive, wherein with red fluorescence powder slurry total mass, calculate, organic carrier mass percent is that 58-79.9% and adjusting adhesive mass percent are 0.1-2%.
4. a kind of used for plasma display screen red fluorescence powder slurry powder according to claim 3, it is characterized in that: described organic carrier is comprised of mass percent polymkeric substance 3-15%, organic solvent 76-95%, film coalescence aid 3-16% and hyper-dispersant 0.1-0.9%, content meets very.
5. according to a kind of used for plasma display screen red fluorescence powder slurry powder described in claim 4 any one, it is characterized in that: described polymkeric substance is ethyl cellulose, organic solvent is Diethylene Glycol single-butyl ether acetic ester, Terpineol 350, hyper-dispersant is Diethylene Glycol butyl ether, and film coalescence aid is dibutyl phthalate.
6. a kind of used for plasma display screen red fluorescence powder slurry powder according to claim 2, is characterized in that: described adjusting adhesive is oleic acid.
7. a kind of used for plasma display screen red fluorescence powder slurry powder according to claim 2, is characterized in that: described organic solvent boiling point is below 250 ℃, and the decomposition temperature of described resin is below 350 ℃.
CN201310580682.3A 2013-11-19 2013-11-19 Red phosphor paste powder for plasma display panels Pending CN103589431A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108949178A (en) * 2017-05-19 2018-12-07 上海汉邦普净节能科技有限公司 Embedded photoluminescent material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585817A (en) * 2011-12-31 2012-07-18 四川虹欧显示器件有限公司 Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof
CN102766457A (en) * 2012-06-29 2012-11-07 彩虹集团电子股份有限公司 Preparation method for yttrium gadolinium europium oxide red fluorescent powder applicable to 3D PDP
CN103224794A (en) * 2013-05-08 2013-07-31 四川大学 Near ultraviolet excitation type red phosphor and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585817A (en) * 2011-12-31 2012-07-18 四川虹欧显示器件有限公司 Red fluorescent powder for PDP (Plasma Display Panel) and preparation method thereof
CN102766457A (en) * 2012-06-29 2012-11-07 彩虹集团电子股份有限公司 Preparation method for yttrium gadolinium europium oxide red fluorescent powder applicable to 3D PDP
CN103224794A (en) * 2013-05-08 2013-07-31 四川大学 Near ultraviolet excitation type red phosphor and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108949178A (en) * 2017-05-19 2018-12-07 上海汉邦普净节能科技有限公司 Embedded photoluminescent material

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