KR20190114582A - Method for manufacturing quantum wires and quantum fabric, quantum wires and fabric manufactured by the same - Google Patents

Abstract

The present invention relates to a quantum wire manufacturing method and a quantum wire and a quantum fabric manufactured thereby. Quantum dot enhanced film (QDEF) used in a display can be replaced, and for this purpose, the quantum wire manufacturing method for weaving quantum wire is provided to manufacture quantum wires for quantum dot application and implement various types of display, and a quantum wire and a quantum fabric manufactured thereby are provided. Specifically, the provided quantum wire manufacturing method comprises: a raw material supply step of supplying a quantum dot mixed with a polymer; and a quantum line forming step of forming a polymer mixed with quantum dots into a line after the raw material supply step.

Description

Method for manufacturing quantum wires and quantum wires and quantum wires, quantum wires and fabric manufactured by the same

The present invention is a method for manufacturing quantum wires and quantum wires and quantum fabrics produced thereby, which can replace QDEF (Quantum Dot Enhanced Film) used in displays, and for this purpose, quantum wires for quantum dot applications are manufactured. The present invention relates to a quantum wire manufacturing method for weaving quantum wires to realize various types of displays, and quantum wires and quantum fabrics produced thereby.

Patent Invention 001 comprises a step of growing a lattice matched InAlAs thin film on the InP substrate, and forming a layer on the InP on the InAlAs thin film, and repeatedly performing the above steps to form a multi-layer It is about a line manufacturing method.

Patent 002 is an electrospray or electrospinning to form a quantum dot layer having a plurality of quantum dots disposed therein; It relates to a quantum dot film manufacturing method comprising the step of forming a barrier layer covering the quantum dot layer by electrospraying or electrospinning on the quantum dot layer.

Patent Inventive 003 is a core layer comprising indium and phosphorus; A coating layer comprising indium oxide and disposed on the core layer; And a shell layer including zinc and sulfur and disposed on the core layer, wherein the coating layer and the shell layer are mixed with each other.

Patent Invention 004 is a quantum dot sheet using a quantum dot of several nanometers in size to convert blue light from green to red, and is a base film such as PET. There is formed a release layer 402a coated with a silicone resin (Silicone Resin), a hard coat layer is formed by coating on the release layer, and a barrier layer (Barrier) to suppress the permeation of water vapor and oxygen on the hard coat layer Layer) formed by coating, quantum dot layer mixed with quantum dot and resin on barrier layer by coating, cured quantum dot layer, coated adhesive layer on cured quantum dot layer, adhesive Base film such as PET film with barrier layer, hard coating layer and release layer on the layer is attached with barrier layer adhered with adhesive, and separates both sides of base film and release layer. As is for a quantum dot sheet (Quantum Dot Sheet) which on both sides of the quantum dot layer, wherein a hard coating layer formed on the barrier layer and the barrier layer and then.

KR 10-1998-067652A (published 15 October 1998) KR 10-2016-0064537 A (published June 08, 2016) KR 10-1641016 B1 (Registered July 13, 2016) KR 10-2017-0023376A (published March 03, 2017)

The present invention is a method for manufacturing quantum wires and quantum wires and quantum fabrics produced thereby, which can replace QDEF (Quantum Dot Enhanced Film) used in displays, and for this purpose, quantum wires for quantum dot applications are manufactured. The present invention relates to a quantum wire manufacturing method for weaving quantum wires to realize various types of displays, and quantum wires and quantum fabrics produced thereby.

In order to solve the problems of the conventional invention, the present invention relates to a method for manufacturing a quantum wire, a raw material supply step of supplying a quantum dot mixed with a polymer ;, after the raw material supply step, molding a polymer mixed with a quantum dot by a line It includes; forming a quantum line.

In accordance with an aspect of the present invention, there is provided a method of manufacturing a quantum wire, wherein in the raw material supply step and the quantum wire forming step, the first curing step of curing the quantum wire after the quantum wire forming step; After, the surface treatment step of coating a quantum line; includes.

It is an invention for a quantum wire manufacturing method of the present invention, after the second curing step in the above-described invention, winding the quantum wire wound on the reel; includes.

It is an invention for a quantum wire manufacturing method of the present invention, in the invention presented above, after the winding step, weaving step of weaving the quantum wire with a cloth; includes.

The present invention relates to a quantum wire, is a columnar form, can be deformable, and includes the drawing by the manufacturing method of claim 2.

The present invention relates to a quantum fabric, and includes a plurality of quantum wires described above, which are intersected and woven.

The present invention is to produce a quantum wire having a thin plate shape, flexible, and to produce a quantum fabric to implement various types of displays. The present invention has the effect of automatically producing quantum wires continuously, and has the effect of weaving by mixing a plurality of quantum wires.

1 is a process chart showing a quantum wire manufacturing method of the present invention.
2 is a photograph showing quantum dots illuminated by ultraviolet irradiation.
Figure 3 is a photograph showing a quantum line of the present invention.
Figure 4 is a photograph showing a quantum cloth of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

Example 1-1 The present invention relates to a method for manufacturing a quantum wire, comprising: a raw material supplying step of supplying a quantum dot mixed with a polymer; and a quantum wire molding a polymer having a mixed quantum dot into a line after the raw material supplying step It includes a molding step.

A large amount of quantum dots having a nano-sized particle diameter is present in a mixed state with a polymer, and the polymer serves as a binder. That is, they have quantum dots contained in the polymer. The polymer produces quantum wires through an extrusion process.

Example 1-2 (a) In Example 1-1 of the quantum wire manufacturing method of the present invention, before the raw material supply step, the storage step of storing the quantum dots by size; includes.

Quantum dots change the response color depending on the size. Therefore, separate the quantum dots of the same size and store the quantum dots in each container by size. Prior to quantum dot storage, the crude quantum dot solution contains reaction by-products and reaction residues, so it is washed with solvents (ethanol, acetone, etc.) to remove them. Washed quantum dots are stored separately in particle size by particle size. Quantum dot nanoparticles are dispersed and stored in solvents such as hexane, toluene and chloroform so as not to entangle each other.

Example 1-2 (b) In Example 1-1 of the quantum wire manufacturing method of the present invention, a quantum dot synthesizing step of synthesizing the quantum dots before the storage step is included.

Quantum dots are synthesized by a solution process method, and quantum dots use CdSe-based quantum dots or InP-based quantum dots. Quantum dot synthesis generates precursors to suit each composition, and prepares cores using the precursors and elements, and synthesizes quantum dots by stacking shells using the precursors and elements of the cores.

[Example 1-3] In Example 1-1 of the quantum wire manufacturing method of the present invention, before the raw material supply step, the stirring step of stirring the polymer containing the quantum dot; The stirring step, the first mixing step; And a polymerization step.

The stirring step includes a monomer mixing step and an oligomer polymerization step. In the monomer mixing step, the weight ratio of the quantum dot and the monomer is 1: 3 to 1:10, and preferably 1: 5. In the oligomer polymerization step, the weight ratio of the quantum dot monomer and the oligomer is 1: 4 to 1:10. Preferably 1: 6. Through the monomer mixing step and oligomer polymerization step described above, the polymer is easily cured by UV, can secure a refractive index similar to air, and can transmit visible light. In addition, due to the excellent heat resistance, there is little change in physical properties due to temperature change, and excellent moisture resistance does not change the quantum dot characteristics due to moisture.

[Example 1-4] In Examples 1-3 of the quantum wire manufacturing method of the present invention, a second mixing step of mixing a diffusion agent and a dispersant during the medium pressure step.

In the polymerization step, the viscosity forms 2000cp to 2500cp. This has the critical meaning that the polymer can stably maintain the nanowire morphology. Quantum dot resin (polymerized with monomer and oligomer) is stored in a stirring vessel.

[Example 1-5] In Example 1-1 of the quantum wire manufacturing method of the present invention, the molding step includes an extrusion step of extruding a quantum dot resin by a nozzle.

The quantum dot resin stored in the stirring vessel changes shape into quantum lines through the nozzle. The thickness of the quantum wire discharged from the nozzle is determined by the ejection speed and the nozzle diameter of the resin. The nozzle diameter may be changed through nozzle replacement, or may be changed by an actuator whose nozzle diameter is variable. The resin ejection rate can be varied by adjusting the internal pressure of the stirring vessel. That is, the controller controls the quantum wire diameter by changing the internal pressure and the nozzle inner diameter of the stirring vessel. The internal pressure of the stirring vessel is achieved by supplying air pressure to the stirring vessel. The air pressure purifies and supplies air in the atmosphere.

Example 1-6 The method for manufacturing quantum wires according to the present invention of Example 1-1 includes, after the extruding step, a detection step of measuring the appearance of the quantum wires extruded from the nozzle.

The present invention determines the appearance quality of quantum wires. The appearance of the quantum wires extruded from the nozzle is continuously measured by a plurality of cameras, and size defects are detected by image processing.

The detecting step includes a vision sensor 510 for capturing the external appearance of a quantum line to generate an image signal, and a controller 520 for determining the external appearance using the signal of the vision sensor. The vision sensor checks the quantum wire for defects in a non-contact manner. The vision sensor measures the external appearance of a quantum wire in real time and transmits an image signal to a controller. The controller analyzes the video signal to determine the accuracy of the size. The camera used in the vision sensor uses a line scan camera or a frame camera.

[Example 1-7] In Example 1-1 of the quantum wire manufacturing method of the present invention, the raw material supply step includes a quantitative supply step of receiving a quantum dot and the polymer from the raw material supply unit to quantitatively supply to the mixing unit.

Quantum dots and polymers should be fed exactly to the stirrer.

[Example 1-8] In Example 1-7 of the quantum wire manufacturing method of the present invention, before the quantitative supply step, the polymer container 100 for receiving a liquid polymer in the polymer supply unit; And a material preparation step of preparing a quantum dot container 200 formed to individually accommodate quantum dots of the same size in each container.

The quantum dots vary in absorbance and emission characteristics due to the difference in the band gap of the nanoparticles according to the particle size and shape. Therefore, when the particle size of the quantum dot is small, the band gap becomes wider and purple, and when the particle size increases, the band gap becomes red as the band gap approaches the bulk state. This phenomenon is generally found in semiconductor quantum dots, and manifests according to the particle size and composition of the quantum dots. To implement this, quantum dots with various particle sizes are used. In the case of mixing the polymer and the quantum dots in one container, there is a disadvantage that a plurality of mixing containers must be used for each quantum dot particle size. To overcome this, only one polymer is contained in one container, and the other different containers only contain quantum dots of various sizes. The stirrer mixes the polymer and the quantum dots.

[Example 1-9] In Examples 1-7 and 1-8 of the quantum wire manufacturing method of the present invention, the stirring vessel is a polymer supply tube 310 in communication with the polymer container; A polymer supply valve 320; a quantum dot supply pipe 330 in communication with the quantum dot container; a quantum dot supply valve 340 formed in the quantum dot supply pipe; a stirring vessel 350 in which the polymer supply pipe and the quantum dot supply pipe communicate with each other; It includes.

The stirring vessel receives the polymer from the polymer supply pipe, and receives only the quantum dots selected from the quantum dot supply pipe. The polymer and the quantum dots are mixed inside the stirring vessel, which is mixed by the stirrer. The mixing vessel may be formed in plural.

[Example 1-10] In Example 2-9 of the quantum wire manufacturing method of the present invention, a stirrer 360 formed inside the stirring vessel; includes.

The polymer and the quantum dots are stirred, which is made by the stirring blade. The stirrer is rotated by receiving power applied from a motor. The stirring blade is coupled to the outer circumferential surface of the rotating shaft, it is formed in plurality in the circumferential direction.

[Example 1-11] The method of manufacturing quantum wires of Examples 1-9 and 1-10 includes a controller 370 for controlling the operation of the polymer supply valve, the quantum dot supply valve, and the agitator.

The controller controls the polymer supply valve and the quantum dot supply valve to supply a certain amount of polymer and quantum dot. The controller also controls the stirrer operation.

[Example 1-12] In the quantum wire manufacturing method of Examples 1-9, the nozzle 380 is detachably coupled to one side of the mixing container and discharges the mixture contained in the mixing container. .

The nozzle may clog the nozzles due to the mixture. Therefore, the nozzles must be disconnected, requiring parts replacement and maintenance. To this end, the nozzle is screwed to the mixing vessel or fastened to the mixing vessel using a fastening member such as a bolt. The bolt may be replaced, and an object having the same purpose and effect may be substituted and used.

[Example 1-13] The quantum wire manufacturing method of the present invention in Example 1-9, is formed on one side of the stirring vessel, the air supply unit 400 for supplying compressed air into the mixing vessel; includes.

Compressed air supplied into the stirring vessel is supplied by an air supply device. The air supply device includes an air supply pipe 410 connected to one side of the stirring vessel; an air compressor 420 formed on one side of the air supply pipe and generating compressed air; and formed on one side of the air supply pipe, It includes; a pressure control valve 430 to adjust.

[Example 1-14] In Examples 1-13 of the quantum wire manufacturing method of the present invention, the filter 440 is formed on one side of the air supply pipe; includes.

The air supplied into the stirring vessel shall not contain fine dust. When foreign matters are supplied to the inside of the stirring vessel together with air, problems such as fine cracking of quantum wires and mixing of foreign matters are caused. To prevent this, one side of the air supply pipe is equipped with a filter for removing foreign substances. The filter is manufactured in the form of a cartridge and can be replaced periodically.

[Example 2-1] The quantum wire manufacturing method of the present invention includes the first curing step of curing the quantum wire after the quantum wire forming step in Example 1-1; It includes; surface treatment step of coating a line.

[Example 2-2] In Example 2-1 of the quantum wire manufacturing method of the present invention, after the surface treatment step, a second curing step of re-curing the quantum wire; includes.

The discharged quantum wire is cured while passing through the UV curing device. The cured quantum wire is coated with Cd 2+ or the like on the surface to increase the brightness as needed. The quantum wire is cured by the UV curing machine 600, ultraviolet (UV) curing through the chemical reaction of the ultraviolet light, the state of the polymer in the liquid state or viscous state to a solid state. As another example, the photoinitiator may be accommodated in the extruded quantum wire to improve the chemical reaction efficiency according to the ultraviolet reaction.

The surface of the quantum wire is coated with a metallic material (such as cadmium), which increases the brightness of the quantum wire. After the first elapsed step, the quantum wire is moved into the reactor 700, and the quantum wire is surface treated during the movement process. Surface-treated quantum wires can prevent the penetration of external oxygen or other chemicals, and can enhance the luminous effect.

After the surface step, it is possible to increase the quantum line binding of the surface-treated material through the re-curing step by UV.

[Example 3-1] In Example 2-1 of the quantum wire manufacturing method of the present invention, after the second curing step, winding the quantum wire wound on the reel; includes.

Quantum lines have a diameter of 420 nm to 670 nm. The quantum wire is wound on a rotating reel. The circumferential speed of the reel is set equal to the ejection speed of the quantum wires in order to minimize the tensile stress of the wound quantum wires. The reel locates the winding guide. The winding guide is reciprocated in the axial direction of the reel, the winding guide is to change the winding position of the quantum wire, to uniformly wound on the reel surface. In another embodiment, the reel makes axial reciprocating movement simultaneously with circumferential rotation. This is to make the quantum wire uniformly wound on the surface of the reel as described above.

[Example 4-1] In Example 3-1 of the quantum wire manufacturing method of the present invention, after the winding step, weaving step of weaving the quantum wire with a cloth; includes.

The quantum wire wound on the reel is woven into a light emitting cloth by a loom. The light emitting fabric may be woven with only one type of quantum wire, or may be woven by mixing a plurality of quantum wires.

[Example 5-1] The present invention relates to a quantum wire, which is columnar shaped, can be deformed, and includes the drawing according to the manufacturing method of Example 2-1 and Example 2-2.

[Example 6-1] The present invention relates to a quantum fabric, which includes a plurality of quantum lines of Example 5-1 formed and intersected and woven.

100: polymer container 200: quantum dot container
310: polymer supply pipe 320: polymer supply valve
330: quantum dot supply pipe 340: quantum dot supply valve
350: stirring vessel 360: stirrer
370 controller 380 nozzle
400: air supply device 410: air supply pipe
420: air compressor 430: pressure control valve
440: filter 510: vision sensor
520 controller 600 UV curing
700 reactor 800 vessel

Claims (6)

In the quantum wire manufacturing method,
A raw material supply step of supplying a quantum dot mixed with a polymer;
And a quantum line forming step of forming a polymer mixed with quantum dots into a line after the raw material supplying step.
The method according to claim 1,
A first curing step of curing the quantum wire after the quantum wire forming step;
And a surface treatment step of coating the quantum wires after the first curing step.
The method according to claim 2,
After the second curing step, winding the quantum wire wound on the reel; quantum wire manufacturing method comprising a.
The method according to claim 3,
After the winding step, weaving step of weaving the quantum wire with a cloth; quantum wire manufacturing method comprising a.
In the quantum line,
A quantum wire which is cylindrical in shape, deformable, and which is drawn by the manufacturing method of claim 2.
In quantum fabric,
A quantum fabric comprising a plurality of quantum wires of claim 5, wherein the quantum wires are interwoven and interwoven.

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