WO2018000698A1 - Procédé de production et système de production de barre lumineuse à points quantiques - Google Patents

Procédé de production et système de production de barre lumineuse à points quantiques Download PDF

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Publication number
WO2018000698A1
WO2018000698A1 PCT/CN2016/106438 CN2016106438W WO2018000698A1 WO 2018000698 A1 WO2018000698 A1 WO 2018000698A1 CN 2016106438 W CN2016106438 W CN 2016106438W WO 2018000698 A1 WO2018000698 A1 WO 2018000698A1
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WO
WIPO (PCT)
Prior art keywords
glass tube
tank
quantum dot
heating
protective gas
Prior art date
Application number
PCT/CN2016/106438
Other languages
English (en)
Chinese (zh)
Inventor
华路
李欣
张洁君
彭辉
杨真
Original Assignee
东莞轩朗实业有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 东莞轩朗实业有限公司 filed Critical 东莞轩朗实业有限公司
Publication of WO2018000698A1 publication Critical patent/WO2018000698A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/06—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus using counterpressure, i.e. filling while the container is under pressure
    • B67C3/10—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus using counterpressure, i.e. filling while the container is under pressure preliminary filling with inert gases, e.g. carbon dioxide
    • 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
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence

Definitions

  • the invention relates to the technical field of quantum dot light strips, in particular to a method and a production system for producing quantum dot light strips.
  • a quantum dot is a series of nanoparticles having fluorescence, which is usually a material having a crystal structure in the range of 1 to 20 nm. Quantum dots have dimensionally tunable optical properties, high quantum efficiency, relatively narrow half-width and resistance to photodegradation. As a new generation of luminescent materials, quantum dots are being used in LED displays.
  • the photoelectric characteristics of quantum dot tubes are unique. They are stimulated by electricity or light, and emit very pure high-quality monochromatic light of various colors according to the diameter of quantum dots.
  • the main principle of applying quantum dots to display technology is to emit quantum dot crystals of different sizes in quantum dot tubes through pure blue light sources, thereby releasing pure red photons and pure green photons, and projecting the remaining pure blue light into the imaging system.
  • quantum dots it is possible to emit high-quality red/green monochromatic light with concentrated spectrum and very pure color by means of quantum dots, completely surpassing the fluorescent light-emitting characteristics of the conventional LED backlight to achieve better imaging color.
  • the quantum dot colloidal material in the quantum dot tube is very special and easily reacts with oxygen and water in the air, so it must be placed in a closed space of anaerobic and water-tight, which forms a difficulty, how to quantum
  • the puncture material is potted into a closed glass tube, and there is no water and air in the glass tube, which is a technical problem to be solved currently.
  • a method for producing a quantum dot strip includes:
  • the glass tube comprising an open end and a closed end, the open end of the glass tube is facing downward, and the quantum dot colloid material is loaded from the open end under vacuum In the glass tube;
  • the glass tube is annealed in an atmosphere of a shielding gas.
  • a quantum dot light strip production system comprising:
  • the filling mechanism includes a filling tank, a liquid supply tank, and a filling mechanism a vacuum pump, a second vacuum pump, a first protective gas tank and a second protective gas tank;
  • the filling tank comprising a tank body and a sealing block, the tank body having an opening, the sealing block being located at an opening of the tank body And a first perforation, the first perforation being concentric with the opening, the filling tank being in communication with the first protective gas tank and the first vacuum pump;
  • the liquid supply tank and the filling tank Connected by a pipe, the pipe is provided with a liquid supply valve, and the liquid supply tank is in communication with the second protective gas tank and the second vacuum pump;
  • the baking mechanism for heating the glass tube and the quantum dot colloidal material under a protective gas atmosphere;
  • the baking mechanism comprises a vacuum box, an infrared heating furnace, and a fourth protection a gas tank and a third vacuum pump, the vacuum box is located in the infrared heating furnace and is in communication with the third vacuum pump, wherein the vacuum box is provided with a plurality of gas tubes, the gas tubes and the fourth protective gas tank Connected
  • the sealing mechanism for heating and melting the open end of the glass tube and annealing the glass tube under a protective gas atmosphere;
  • the sealing mechanism comprises a fixing frame, a first heating source, and an annealing a chamber, a fourth vacuum pump, a third shielding gas tank, and a second heating source, the first heating source being disposed under the fixing frame; the second heating source being disposed in the annealing chamber, the third Both the protective gas cylinder and the fourth vacuum pump are in communication with the annealing chamber.
  • a method for producing a quantum dot strip includes:
  • the glass tube comprising an open end and a closed end, the open end of the glass tube is facing downward, and the open end is extended from the sealing block into the filling tank to open the first
  • the vacuum pump vacuums the filling tank, opens the second vacuum pump to evacuate the liquid supply tank, then opens the second protective gas tank to fill the liquid supply tank with nitrogen gas, and then opens the liquid supply valve, and the liquid supply tank injects into the filling tank
  • Quantum dot colloidal material when the liquid level of the quantum dot colloidal material in the filling tank is higher than the open end of the glass tube, the quantum dot colloid material is filled into the glass tube by the open end of the glass tube, and the quantum dot colloid material is filled with the glass tube and then opened.
  • the first protective gas tank is filled with nitrogen gas into the filling tank, and the nitrogen gas enters the glass tube to form a nitrogen plug in the glass tube;
  • the glass tube with the quantum dot colloidal material is placed in a vacuum box, the vacuum box is evacuated by a third vacuum pump, and then the protective gas is filled in the inflation tube of the vacuum box through the fourth protective gas tank, and then the infrared heating furnace is used.
  • the glass tube is subjected to heat treatment;
  • the glass tube is placed in an annealing chamber having a second heating source, and the fourth vacuum pump evacuates the annealing chamber, and then the protective gas is filled in the annealing chamber through the third protective gas tank, and the glass tube is annealed. That is, the quantum dot light strip is obtained.
  • the production system of the above quantum dot light strip comprises a filling mechanism, a baking mechanism, a sealing mechanism, etc., and vacuums and a protective gas are introduced in the filling tank, the liquid supply tank, the vacuum box and the annealing chamber to ensure the quantum dots.
  • the light strip does not enter the air during the production process, avoiding the oxidation reaction of the quantum dot strip.
  • 1 is a process flow diagram of a method of producing a quantum dot strip of an embodiment
  • FIG. 2 is a schematic structural view of a production system of a quantum dot strip according to an embodiment
  • FIG. 3 is a schematic structural view of a filling mechanism of the production system of the quantum dot light strip shown in FIG. 2;
  • Figure 4 is a schematic view showing the structure of the filling tank of the filling mechanism shown in Figure 3;
  • FIG. 5 is a schematic structural view of a baking mechanism of the production system of the quantum dot strip of FIG. 2;
  • FIG. 6 is a schematic structural view of a conveyor belt, a fixing frame, and a first heating source in a sealing mechanism of the production system of the quantum dot light strip of FIG. 2;
  • FIG. 7 is a schematic view showing the structure of an annealing chamber in a sealing mechanism of the production system of the quantum dot strip of FIG. 2.
  • a method for producing a quantum dot strip of an embodiment includes:
  • Step S10 providing a quantum dot colloid material and a glass tube.
  • the glass tube comprises an open end and a closed end. The open end of the glass tube is facing downward, and the quantum dot colloid material is loaded into the glass tube from the open end under vacuum.
  • Step S20 filling a glass tube with a shielding gas to form a gas plug.
  • the shielding gas is specifically nitrogen. It is believed that other inert gases may also be used as shielding gas for forming gas plugs.
  • the atmosphere of the shielding gas has a gas pressure of 0.7 to 1.0 atm.
  • Step S30 heat treatment of the glass tube and the quantum dot colloidal material under a protective gas atmosphere.
  • the glass tube and the quantum dot colloid material are heated by an infrared heating furnace, and the heating temperature is 150 ° C to 200 ° C, and the heating time is 2 min to 30 min.
  • Step S40 heating and sintering the open end of the glass tube.
  • the open end of the glass tube is heated and melted and sintered in a hydrogen-oxygen generator at a heating temperature of 1900 ° C to 2000 ° C and a heating time of 0.5 min to 10 min.
  • Step S50 annealing the glass tube under an atmosphere of a shielding gas.
  • the shielding gas is nitrogen and the atmosphere of the shielding gas has a gas pressure of 0.7 to 1.0 atmospheres.
  • the temperature at which the glass tube is annealed is 80 ° C to 90 ° C, and the annealing time is 0.5 min to 30 min.
  • a production system system 100 for a quantum dot strip of an embodiment includes a filling mechanism 10, a baking mechanism 20, and a sealing mechanism 30.
  • the filling mechanism 10 is for loading a quantum dot colloid material into a glass tube
  • the baking mechanism 20 is for baking the glass tube 40
  • the sealing mechanism 30 is for sealing the open end of the glass tube.
  • the filling mechanism 10 includes a filling tank 12, a liquid supply tank 13, a first vacuum pump 14, a second vacuum pump 15, and a first protective gas tank 16 and a second protective gas tank 17, a filling tank.
  • 12 includes a can body 121 and a sealing block 122.
  • the can body 121 has an opening.
  • the sealing block 122 is located at the opening of the can body 121 and a first through hole is formed in the middle of the sealing block 122.
  • the first through hole is coaxially disposed with the opening.
  • the tube passes through the sealing block 122 into the can body 121.
  • the filling can 12 further includes a pressing block 123 and a pressing mechanism 124.
  • the pressing block 123 is placed on the sealing block 122, and a second perforation is formed in the middle, and the second perforation is concentric with the first perforation.
  • the pressing mechanism 124 is used to press the pressing block 123.
  • the pressing mechanism 124 includes a pressing rod 125, a pressing block 126 at the first end of the pressing rod 125, and a handle 127 at the second end of the pressing rod 125.
  • the pressing block 126 is located on the pressing block 123, and the pressing block is pressed.
  • the middle portion of the 126 is provided with a third through hole, and the third through hole is concentric with the first through hole, and the glass tube 40 sequentially passes through the pressing block 126, the pressing block 123 and the sealing block 122 to enter the can body 121.
  • the pressing block 126 can apply pressure to the pressing block 123, so that the pressing block 123 presses the sealing block 122, and the sealing block 122 is contracted by force, and the glass tube 40 is tightly clamped, thereby the glass tube 40 and the can body 121.
  • the joint is sealed.
  • the filling tank 12 is in communication with the first protective gas tank 16 and the first vacuum pump 14, and when the first vacuum pump 14 is opened, the air in the filling tank 12 is evacuated to form a vacuum filling tank.
  • a shielding gas is introduced into the filling tank 12.
  • the shielding gas is nitrogen.
  • the liquid supply tank 13 and the filling tank 12 are connected by a pipe 18, which is provided with a liquid supply valve 19, and when the filling is required, the liquid supply valve 19 is opened, and when the filling is completed, the liquid supply valve 19 is closed.
  • the liquid supply tank 13 communicates with the second protective gas tank 17 and the second vacuum pump 15, and when the second vacuum pump 15 is opened, the air in the liquid supply tank 13 is evacuated, and when the second protective gas tank 17 is opened, it is introduced into the liquid supply tank 13.
  • the shielding gas is nitrogen.
  • the liquid supply tank 13 and the filling tank 12 are respectively connected with a vacuum pump and high-purity nitrogen gas, which are both a power source for controlling the liquid level and an environmental protection control means for protecting the quantum dot material.
  • the quantum dot colloidal material is poured into the pre-vacuum glass tube 40. Since the specific gravity of the quantum dot colloidal material is close to that of water, a theoretically vacuumed glass tube can be filled under a vacuum condition of 10 meters. Therefore, the filling work can be easily carried out, and the filling height of the conventional product is less than 600 mm.
  • the vacuum function of the liquid supply tank 13 can also effectively remove fine bubbles in the quantum dot colloidal material, thereby ensuring that there are no bubbles generated by the heating in the filling glass tube 40, thereby ensuring product quality.
  • the baking mechanism 20 includes a vacuum box 21, an infrared heating furnace 22, a fourth shielding gas tank 27 and a third vacuum pump 23.
  • the vacuum box 21 is located in the infrared heating furnace 22 and communicates with the third vacuum pump 24, and the vacuum box 21 is provided with a plurality of gas tubes 25, and the gas tubes 25 are in communication with the fourth protective gas tank 27 for charging the protective gas through the fourth protective gas tank 27 to ensure that the vacuum chamber 21 has an exact degree of vacuum, which is more favorable for drying.
  • the steps are carried out.
  • the inner wall of the infrared heating furnace 22 is provided with an infrared heating furnace tube 221, which emits infrared rays and performs infrared heating.
  • the infrared heating is used here to ensure a long-time heating effect, and the heating is stable.
  • the gas tube 25 is filled with a shielding gas, here nitrogen gas.
  • the shielding gas maintains the vacuum environment within the vacuum chamber 21 and effectively maintains any vacuum at a stable level for 12 hours during the baking process.
  • a quartz holder 26 is also provided in the vacuum box 21 for holding the glass tube 40, holding the glass tube 40 in the vacuum box 21, and also functioning as a glass tube 40 for peace and temperature.
  • An insulating layer 28 is also coated on the outer wall of the vacuum box 21 for heat preservation.
  • the sealing mechanism 30 includes a conveyor belt 31 , a fixing frame 32 , a first heating source 33 , an annealing chamber 34 , a fourth vacuum pump 35 , a third shielding gas tank 36 , and a second heating source 37 . It is fixed to the conveyor belt 31 and moves as the conveyor belt 31 operates.
  • the first heating source 33 is disposed under the conveyor belt 31 for heating the glass tube 40 placed on the fixing frame 32. The first heating source 33 heats the open end of the glass tube 40, melts the open end, and cools to achieve the sealing effect. .
  • the second heating source 37 is placed in the annealing chamber 34, and the fourth vacuum pump 35 and the third protective gas tank 36 are both in communication with the annealing chamber 34.
  • the sealed glass tube 40 is placed in the annealing chamber 34, and the fourth vacuum pump 35 will be an annealing chamber.
  • a protective gas is introduced through the third protective gas tank 36, and the protective gas is high-purity nitrogen.
  • the second heating source 37 heats the glass tube 40 for annealing.
  • the temperature of the second heating source 37 is lower than the temperature of the first heating source 33, thereby heating and cooling the temperature to achieve the purpose of annealing.
  • the first heating source 33 is a hydrogen-oxygen generator that emits a high-temperature oxyhydrogen flame.
  • the second heating source 37 is a conventional heating device.
  • a support frame 38 is disposed within the annealing chamber 34, and the glass tube 40 is placed on the support frame 38.
  • the method for producing a quantum dot strip by the above system is:
  • a quantum dot colloid material is provided, and the glass tube 40 is open at one end and closed at the other end. Therefore, the open end and the closed end are provided, and the open end of the glass tube 40 is extended from the sealing block 122 into the filling tank 12 to open the first
  • a vacuum pump 14 draws the filling tank 12 under vacuum.
  • the air in the liquid supply tank 13 is partially evacuated by the second vacuum pump 15, and then the high-purity nitrogen shielding gas is filled into the liquid supply tank 13 through the second protective gas tank 17, thereby protecting the quantum dot colloid material from entering the air and Other impurities.
  • the liquid supply valve 19 is opened, and the liquid supply tank 13 injects the quantum dot colloidal material into the filling tank 13.
  • the filling tank 12 and the liquid supply tank 13 are in a vacuum environment, the liquid level in the filling tank 12 rises, and the filling tank
  • the liquid level of the quantum dot colloidal material in 12 is higher than the open end of the glass tube 40
  • the quantum dot colloid material is filled into the glass tube 40 from the open end of the glass tube 40, and the first protective gas is opened after the quantum dot colloid material fills the glass tube.
  • the tank 16 is filled with nitrogen gas into the filling tank 12, and nitrogen gas enters the open end of the glass tube 40, and a nitrogen plug is formed at the open end of the glass tube 40 so that the air does not enter the glass tube 40.
  • the vacuum degree of the filling tank 12 and the liquid supply tank 13 is maintained at 7*10 -2 Mpa-5*10 -2 Mpa, specifically 6*10 -2 Mpa.
  • the glass tube 40 containing the quantum dot colloid material is placed in the vacuum box 21 (the open end of the glass tube 40 is facing downward during the movement), the third vacuum pump 24 is turned on to evacuate the vacuum box 21, and then the fourth protective gas tank is turned on. 27, in the gas tube 25 of the vacuum box 21 is filled with high-purity nitrogen gas, the heating furnace tube 221 of the infrared heating furnace 22 is turned on, the temperature is raised to 150 ° C -200 ° C, and the first preset time is heated, the first preset time is The quantum dot colloidal material in the glass tube 40 is heat-cured at 2 min to 30 min.
  • the glass tube 40 is placed on the quartz holder 26 in the vacuum box 21, and the quartz holder 26 is used to support the glass tube 40, and the glass tube 40 is held in the vacuum box 21, and Glass tube 40 for peace and temperature functions.
  • the vacuum of the vacuum box 21 is 0.7 to 1.0 atm, specifically 0.8 atm.
  • the glass tube 40 is taken out from the vacuum box 21 and placed on the holder 32.
  • the open end of the glass tube 40 faces downward, and the conveyor belt 31 drives the glass tube 40 to the hydrogen-oxygen generator 33 to heat the open end of the glass tube 40.
  • the second preset time is 0.5min-10min, and is heated to the open end of the glass tube 40 to be heated and melted, thereby achieving the purpose of sealing.
  • the glass tube 40 is placed in the annealing chamber 34 having the second heating source 37, and the fourth vacuum pump 35 evacuates the annealing chamber 34, and then the third shielding gas tank 36 is filled with the high purity nitrogen gas into the annealing chamber 34.
  • the second heating source 37 is heated to 80 ° C - 90 ° C, and is kept for a third preset time, the third preset time is 0.5 Min-30 min, adjusted according to the state of the glass tube 40.
  • the temperature of the second heating source 37 is lower than the temperature of the first heating source 33, thereby heating and cooling the temperature to achieve the purpose of annealing.
  • the glass tube 40 is taken out, that is, a quantum dot light strip is obtained.
  • the heating temperature of the oxyhydrogen generator is 1900 ° C to 2100 ° C.
  • the second heating source is heated to between 80 °C and 90 °C.
  • the opening of the glass tube 40 needs to be performed downward to prevent nitrogen from escaping from the glass tube 40, and the air enters the glass tube 40.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un procédé de production et un système de production de barre lumineuse à points quantiques. Le procédé comprend les étapes suivantes consistant à : fournir un matériau colloïdal à points quantiques et un tube en verre (40), le tube en verre (40) comprenant une extrémité ouverte et une extrémité fermée ; placer l'extrémité ouverte du tube en verre (40) vers le bas pour placer le matériau colloïdal à points quantiques dans le tube en verre (40) à partir de l'extrémité ouverte (S10) ; remplir le tube en verre (40) avec un gaz protecteur pour former un bouchon de gaz (S20) ; soumettre le tube en verre (40) à un traitement thermique dans l'atmosphère du gaz protecteur (S30) ; chauffer l'extrémité ouverte du tube en verre (40) jusqu'à ce qu'elle soit fondue et frittée (S40) ; et soumettre le tube en verre (40) à un traitement de recuit dans l'atmosphère du gaz protecteur (S50).
PCT/CN2016/106438 2016-06-30 2016-11-18 Procédé de production et système de production de barre lumineuse à points quantiques WO2018000698A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610514288.3 2016-06-30
CN201610514288.3A CN106122776B (zh) 2016-06-30 2016-06-30 量子点光条的生产方法

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WO2018000698A1 true WO2018000698A1 (fr) 2018-01-04

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Publication number Priority date Publication date Assignee Title
CN106122776B (zh) * 2016-06-30 2019-01-25 东莞轩朗实业有限公司 量子点光条的生产方法

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CN106122776A (zh) * 2016-06-30 2016-11-16 东莞轩朗实业有限公司 量子点光条的生产方法
CN205914359U (zh) * 2016-06-30 2017-02-01 东莞轩朗实业有限公司 量子点光条后处理装置
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