KR20200014079A - Quantum dot polarizer plate and method for preparing the polarizer plate and display device comprising the same - Google Patents

Abstract

Disclosed are a quantum dot polarizing plate, a manufacturing method thereof, and an image display device including the same. The quantum dot polarizing plate includes a polarizing plate, a quantum dot layer, and a barrier layer so that the thickness is reduced and process costs are reduced. Provided are the quantum dot polarizing plate with a high thin film, low costs, and high efficiency, the manufacturing method thereof, and the image display device including the same.

Description

QUANTUM DOT POLARIZER PLATE AND METHOD FOR PREPARING THE POLARIZER PLATE AND DISPLAY DEVICE COMPRISING THE SAME}

The present invention relates to a quantum dot polarizing plate and a manufacturing method and an image display device including the same, and more particularly, to an integrated quantum dot polarizing plate and manufacturing method including a quantum dot and an image display device including the same.

With the expansion of video services, consumer needs for high-definition, low power consumption, and thin film display devices are increasing. Reflecting such consumer needs, technology development of a video display device employing a liquid crystal display (LCD) is being actively performed today.

In the related art, an image display apparatus using a quantum dot film in a liquid crystal display panel is provided in order to implement an image display apparatus of high quality, low power consumption, and high thickness.

A quantum dot film is a light emitting film that emits green light and red light when blue light is emitted from the outside and emits white light by a combination of the two lights. In this case, since the emitted light has a very narrow spectral wavelength, there is an advantage of excellent color reproduction power and low power consumption.

However, such a quantum dot film is vulnerable to moisture and oxygen, a conventional quantum dot film is provided by coating a PET film having a barrier layer formed on both sides. However, the conventional quantum dot film produced in this way is provided with a thickness of 0.3 ~ 0.5mm thick, there is a disadvantage that is difficult to apply to a small image display device (notebook, tablet pc, mobile phone, etc.).

An object of the present invention for solving the above problems is to provide a high thin film, low cost and high quality quantum dot polarizer.

Another object of the present invention for solving the above problems is to provide a manufacturing method of a high thin film, low cost and high quality quantum dot polarizing plate.

Another object of the present invention for solving the above problems is to provide a high thin film, low cost and high quality image display device.

A quantum dot polarizer according to an embodiment of the present invention for achieving the above object, an adhesive layer, a first protective layer located on one surface of the adhesive layer, the polarizing layer located on one surface of the first protective layer, is located on one surface of the polarizing layer And a second passivation layer, a quantum dot layer disposed on one surface of the second passivation layer, and a barrier layer disposed on one surface of the quantum dot layer.

The barrier layer may be formed by an atmospheric pressure process.

The barrier layer may be formed by coating a surface of the quantum dot layer with a solution containing a barrier material in a solvent-free or aliphatic solvent during an atmospheric process.

The barrier layer may have a thickness of 0.01 mm or less.

In addition, the thickness of the quantum dot layer may be 0.01mm to 0.2mm.

The thickness of the first and second protective layers may be 0.025mm to 0.075mm.

The quantum dot polarizer is positioned between a liquid crystal display panel and a light unit, and the other side of the adhesive layer is attached to one surface of the glass substrate in the liquid crystal display panel, and the other side of the barrier layer is the light source. It may be located facing the.

Method for manufacturing a quantum dot polarizing plate according to an embodiment of the present invention for achieving the above object, preparing a first protective layer, forming a polarizing layer on one surface of the first protective layer, one surface of the polarizing layer Forming a second protective layer on the substrate, forming a quantum dot layer on one surface of the second protective layer, forming a barrier layer on one surface of the quantum dot layer, and forming an adhesive layer on the other surface of the first protective layer Steps.

At this time, the other surface of the adhesive layer may be attached a release protective film.

In addition, the barrier layer may be formed by an atmospheric process.

The barrier layer may be formed by coating a surface of the quantum dot layer with a solution containing a barrier material in a solvent-free or aliphatic solvent during an atmospheric process.

Here, the thickness of the barrier layer may be 0.01 mm or less.

The thickness of the quantum dot layer may be 0.01mm to 0.2mm.

Method of manufacturing a quantum dot polarizing plate according to another embodiment of the present invention for achieving the above object comprises the steps of preparing a substrate, forming a quantum dot layer on one surface of the substrate, attaching a polarizing plate on one surface of the quantum dot layer, Curing the quantum dot layer, detaching the substrate from the quantum dot layer, and forming the barrier layer on the other surface of the quantum dot layer from which the substrate is detached.

In this case, the substrate may be a release processed substrate.

The method of manufacturing the quantum dot polarizing plate may further include cleaning the substrate after preparing the substrate.

In addition, the polarizing plate may include an adhesive layer, a first protective layer positioned on one surface of the adhesive layer, a polarizing layer positioned on one surface of the first protective layer, and a second protective layer positioned on one surface of the polarizing layer.

In the curing of the quantum dot layer, ultraviolet rays (Ultraviolet ray) may be irradiated toward the other surface of the substrate to cure the quantum dot.

In addition, the forming of the barrier layer on the other surface of the quantum dot layer from which the substrate is detached may include applying a solution containing a barrier material and sintering the applied solution with Extreme Ultraviolet Ray having a wavelength of 200 nm or less. It may include the step of.

In the applying of the solution containing the barrier material, a solution containing the barrier material in a solvent-free or aliphatic solvent may be coated on the other surface of the quantum dot layer.

A quantum dot polarizer and a manufacturing method according to an embodiment of the present invention and an image display device including the same by providing an integrated quantum dot polarizer including a quantum dot layer, low cost and high thin film quantum dot polarizer and manufacturing method and an image display device including the same Can be provided.

In addition, the quantum dot polarizing plate and the manufacturing method and the image display device including the same include a barrier layer formed by applying a solution in which a barrier material is dissolved in a solvent-free or aliphatic solvent, the surface quality is even A quantum dot polarizer and a manufacturing method thereof and an image display device including the same can be provided.

In addition, the quantum dot polarizing plate and manufacturing method, and the image display device including the same, the high-quality quantum dot polarizing plate and manufacturing method of preventing deformation of the polarizing layer and the protective layer by thermal curing by using an ultraviolet curable resin when forming the quantum dot layer and the same An image display device may be provided.

1 is a structural diagram of a quantum dot polarizer according to an embodiment of the present invention.
2 is an SEM image of a barrier layer formed using an aliphatic solvent in a quantum dot polarizer according to an embodiment of the present invention.
3 is a flowchart illustrating a method of manufacturing a quantum dot polarizer according to an embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a quantum dot polarizer according to another embodiment of the present invention.
5 is an emission spectrum graph of a quantum dot polarizer according to an experimental example of the present invention.
6 is a graph of color reproducibility of the quantum dot polarizer according to the experimental example of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related items or any of a plurality of related items.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In addition, where a component is mentioned in the present application as being on another component, it means that it may be formed directly on the other component or a third component may be interposed therebetween. In addition, in the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical contents.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. In the following description of the present invention, the same reference numerals are used for the same elements in the drawings and redundant descriptions of the same elements will be omitted.

1 is a structural diagram of a quantum dot polarizer according to an embodiment of the present invention.

Referring to FIG. 1, a quantum dot polarizer according to an exemplary embodiment of the present invention may be used in an image display device having a liquid crystal display panel (LCD panel). In more detail, the quantum dot polarizer may be positioned between a liquid crystal display panel (hereinafter referred to as an LCD panel) and a light source (hereinafter referred to as a BLU) in the image display device. For example, the light source BLU may be a blue light emitting diode (LED).

As described above, the quantum dot polarizer may be positioned between the LCD panel and the light source BLU to convert blue light emitted from the light source BLU into linearly polarized white light.

In more detail, the quantum dot polarizer may include a polarizer 100, a quantum dot layer 300, and a barrier layer 500.

The polarizer 100 may linearly polarize light incident from the light source BLU. In other words, the quantum dot polarizer may selectively transmit light vibrating in a specific direction among the light incident from the light source.

In more detail, the polarizing plate 100 may include an adhesive layer 110, a protective layer 130, and a polarizing layer 150.

The adhesive layer 110 may be a component for adhering onto a liquid crystal display panel. According to an embodiment, the adhesive layer 110 may be formed of a pressure-sensitive adhesive. For example, the adhesive layer 110 may be an acrylic resin adhesive.

The protective layer 130 may be located on the adhesive layer 110. In more detail, the protective layer 130 may include a first protective layer 131 and a second protective layer 135. In this case, the first protective layer 131 may be located between the adhesive layer 110 and the polarizing layer 150 to be described later. In addition, the second protective layer 135 may be located between the polarization layer 150 and the quantum dot layer 300 to be described later. Therefore, the protective layer 130 may protect and support the polarization layer 150 to be described later.

The protective layer 130 may include a triacetyl cellulose film, a polycycloolefin film, a polyethylene terephthalate (PET) film, a polymethylmethacrylate film, or a poly It may be composed of at least one or a combination of carbonate (polycarbonate) film, polyvinyl alcohol (polyvinyl alcohol) film.

The polarization layer 150 may be located on the adhesive layer 110. The polarizing layer 150 may be formed by dyeing a dichroism dye in the stretched polymer film. According to an embodiment, the polarizing layer 150 may be formed by dyeing iodine molecules in the stretched polyvinyl alcohol film.

Here, the dichroism dye may adsorb light in a direction perpendicular to the stretching direction. Therefore, as described above, the polarization layer 150 of the quantum dot polarizer according to the present invention may transmit light oscillating in the stretching direction.

As described above, the structure of the polarizing plate 100 in the quantum dot polarizing plate according to the embodiment of the present invention may be similar to a conventional polarizing plate structure. For example, the conventional polarizing plate may be provided in a structure in which a release film, an adhesive layer, a first protective layer, a polarizing layer, a second protective layer, and a protective film are sequentially stacked. At this time, the release film and the protective film is configured to protect the quantum dot polarizer from scratches and dust generated during the transfer process, it may be easy to remove.

Therefore, the quantum dot polarizer according to an embodiment of the present invention can provide a low cost and high efficiency quantum dot polarizer by removing the release film and the protective film in the quantum dot polarizer used in the prior art.

The quantum dot layer 300 may convert the color of light incident from the outside according to the size of the quantum dot.

Here, the quantum dot may be a semiconductor nanocrystal having a size of several nm or more and several tens of nm or less.

The quantum dot may emit light by a quantum confinement effect. More specifically, light may occur when unstable electrons inside the quantum dot fall from the conduction band to the valence band.

In this case, the size of the energy band gap between the conduction band and the valence band may vary according to the particle size of the quantum dot.

According to one embodiment, when the size of the particle (quantum dot) is large, because the size of the energy band gap (Energe Band Gap) is small can emit a long visible light. For example, the quantum dot may emit red light when the particle size is large.

According to another embodiment, when the size of the particle is small, the size of the energy band gap (Energe Band Gap) is large, it can emit a visible light of short wavelength. For example, a quantum dot may emit green light when the particle size is small.

In other words, the color of the emitted light may vary depending on the size of the quantum dot particles.

Therefore, the quantum dot polarizer according to the embodiment of the present invention includes a quantum dot layer 300 in which quantum dots having different particle sizes are dispersed, and as described above, blue light incident from the light source BLU is converted into red light and green light. White light can be provided.

The quantum dot layer 300 may be formed by curing a solution in which quantum dots are dispersed in an ultraviolet curable resin. In this case, the quantum dot layer 300 is any one of an embodiment formed directly on the second protective layer 135 and another embodiment formed on a substrate (not shown) and bonded on the second protective layer 135. It can be formed by the method of. Quantum dot layer 300 according to one embodiment and another embodiment will be described in more detail when the manufacturing method of the quantum dot polarizing plate according to an embodiment of the present invention.

The barrier layer 500 may be formed on the quantum dot layer 300. The barrier layer 500 may include at least one barrier material.

As described above, the barrier layer 500 may block moisture and oxygen penetrating into the quantum dot layer 300 from the outside.

The conventional quantum dot polarizer is provided in the form of inserting a quantum dot layer between a plurality of barrier layers to block moisture and oxygen from the outside. However, the thickness of the conventional barrier layer is about 0.3mm to 0.5mm, it is difficult to manufacture a thin film type quantum dot polarizer has a disadvantage.

On the other hand, in the quantum dot polarizer according to the embodiment of the present invention, the barrier layer 500 may be formed only on one surface of the quantum dot layer 300, thereby making it possible to manufacture a quantum dot polarizer of a high thin film.

In addition, when the quantum dot polarizing plate according to the embodiment of the present invention is applied to the image display device, one surface of the adhesive layer 110 is attached onto the glass substrate in the LCD panel, and the other surface of the barrier layer 500 is By being positioned to face the light source BLU, one surface of the quantum dot layer 300 is blocked with moisture and oxygen by the barrier layer 500, and the other surface of the quantum dot layer 300 is blocked with moisture and oxygen by a glass substrate. Can be.

Accordingly, the quantum dot polarizing plate according to the embodiment of the present invention may provide a high quality quantum dot polarizing plate which prevents intrusion of moisture and oxygen from the outside.

The barrier layer 500 may be deposited by one of chemical vapor deposition (CVD), physical vapor deposition (PVD), atomic layer deposition (ALD), and atmospheric pressure.

The atmospheric pressure process includes slot-die coating, spin coating, blade coating, bar coating, rod coating, comma coating and pipetting. ), Roll coating, spray coating, dispensing, stamping, imprinting, screen printing, gravure printing, flexo printing, offset ) Printing, inkjet printing and nozzle printing may be used, but is not limited thereto.

According to an embodiment, the barrier layer 500 may be formed to a thickness of 0.01 mm or less by an atmospheric pressure process. Features of the barrier layer 500 deposited by the atmospheric pressure process according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a scanning electron microscope (SEM) image of a barrier layer formed using an aliphatic solvent in a quantum dot polarizer according to an embodiment of the present invention.

Referring to FIG. 2, the barrier layer 500 may be formed on the quantum dot layer 300 by an atmospheric pressure process. In more detail, the barrier layer 500 may be formed by spin coating a solution containing a barrier material on the quantum dot layer 300.

In this case, the barrier layer 500 may be a solution in which the barrier material is dissolved in a solvent-free or aliphatic solvent including the barrier material.

For example, when an aromatic solvent is used when the barrier layer 500 is formed, bending may be formed on the surface of the quantum dot layer 300 by high solubility.

Accordingly, the barrier layer 500 of the quantum dot polarizer according to the embodiment of the present invention is a solvent-free or solvent-free type containing a barrier material for manufacturing a high-quality quantum dot polarizer with minimal surface damage to the quantum dot layer 300. It may be formed by spin coating a solution in which a barrier material is dissolved in an aliphatic solvent. For example, when using a solution in which a barrier material is dissolved in an aliphatic solvent, the barrier material uses perhydropolysilazane, and the aliphatic solvent uses dibutyl ether. Can be.

In addition, the barrier layer 500 of the quantum dot polarizer according to an embodiment of the present invention is not limited to the above description, and a solution in which the barrier material is dissolved in a solvent-free or aliphatic solvent including the barrier material. It can also be provided in the form of a multi-layer thin film by coating the cross.

The water vapor transmission rate (WVTR) of the barrier layer 500 may be 1 g / m² / day or less.

The quantum dot polarizer according to the embodiment of the present invention has been described above. Hereinafter will be described a method of manufacturing a quantum dot polarizer according to the embodiment of the present invention described above.

3 is a flowchart illustrating a method of manufacturing a quantum dot polarizer according to an embodiment of the present invention.

Referring to FIG. 3, the first protective layer 131 may be prepared (S100). According to an embodiment, the first protective layer 131 may be provided as a triacetyl cellulose film having a thickness of 0.025 mm to 0.075 mm.

Thereafter, a polarization layer 150 in which a dichroism dye is dyed on the polymer film 110 may be formed on one surface of the first protective layer 135 (S200). According to the embodiment, the polarizing layer 150 may be prepared by stretching a polymer film mixed with a dichroism dye in one direction. For example, an iodine dye may be used as a dichroism dye, and polyvinyl alcohol may be used as a polymer film. In this case, the polarization layer 150 may be formed to a thickness of 0.008m to 0.025mm.

When the polarization layer 150 is formed, the second protective layer 135 may be formed on one surface of the polarization layer 150 (S300). According to the embodiment, like the first protective layer 131 described above, the second protective layer 135 may use a triacetyl cellulose film having a thickness of 0.025 mm to 0.075 mm.

After the second protective layer 135 is formed, the quantum dot layer 300 may be formed on one surface of the second protective layer 135 (S400). The quantum dot layer 300 may be formed by coating a surface of the second passivation layer 135 with a material obtained by dispersing a quantum dot emitting red light and green light in an ultraviolet curable resin. For example, the thickness of the quantum dot layer 300 may be 0.01 mm to 0.2 mm.

In this case, curing of the UV curable resin may be slow in air. Accordingly, while the UV curable resin is cured, the curable resin may be cured in a state in which a release film is attached to one surface of the quantum dot layer 300.

However, the quantum dot layer 300 is not limited to the description, and is formed by injecting UV curable resin in which a quantum dot is dispersed in a state in which a release film is attached to one surface of the second protective layer 135 and then coating it. can do.

To help cure the quantum dot layer 300, ultraviolet (UV) may be used. In this case, since the ultraviolet light UV may be absorbed by the polarization layer 150, the ultraviolet light UV may be irradiated to enter the one surface of the quantum dot layer 300. For example, the irradiation amount of ultraviolet rays may be 0.1 J / cm 2 to 1 J / cm 2.

When the quantum dot layer 300 is formed, a barrier layer 500 may be formed on one surface of the quantum dot layer 300 (S500). According to an embodiment, the barrier layer 500 may be formed by an atmospheric pressure process, as described with reference to FIG. 3. According to an embodiment, the barrier layer 500 may be applied by spin coating a solution in which the barrier material is dissolved. For example, the barrier layer 500 may be formed to a thickness of 0.01 mm or less.

Thereafter, the applied solution may be sintered to form the barrier layer 500. In this case, the applied solution may be sintered using extreme ultraviolet (Extreme UV).

When the barrier layer 500 is formed, the adhesive layer 110 may be formed on the other surface of the first protective layer 131 (S600). In this case, the adhesive layer 110 may be formed of a pressure-sensitive adhesive. For example, the adhesive layer 110 may be formed of an acrylic resin.

In the quantum dot polarizer according to the exemplary embodiment of the present invention, when one surface of the adhesive layer 110 is attached to a glass substrate in a liquid crystal display panel, the other surface of the barrier layer 500 may be a light source. BLU).

4 is a flowchart illustrating a method of manufacturing a quantum dot polarizer according to another embodiment of the present invention.

Referring to FIG. 4, a substrate (not shown) may be prepared to manufacture a quantum dot polarizer according to another exemplary embodiment of the present invention (S100A). In this case, the substrate (not shown) may be configured to facilitate the formation of the quantum dot layer 300 to be described later. According to an embodiment, the substrate (not shown) may be a release-treated glass substrate.

The prepared substrate (not shown) may be cleaned (S200A). Accordingly, a high quality quantum dot polarizing plate in which performance degradation due to particles is prevented may be provided.

The quantum dot layer 300 may be formed on the cleaned substrate (not shown) (S300A). As described above, the quantum dot layer 300 may be formed by coating a solution in which a quantum dot emitting red light and green light is dispersed in an UV curable resin.

Thereafter, a conventional polarizing plate may be attached to one surface of the quantum dot layer 300 (S400A). In this case, the conventional polarizing plate is provided in a multilayer structure in which a release film, an adhesive layer 110, a first protective layer 131, a polarizing layer 150, a second protective layer 135, and a protective film are sequentially stacked. Thus, when the conventional polarizing plate is attached, the protective film may be removed and the other surface of the second protective layer may be attached to contact one surface of the quantum dot layer 300.

Thereafter, ultraviolet (UV) may be irradiated to cure the quantum dot layer 300 (S500A). As described above, ultraviolet light (UV) may be absorbed by the polarization layer 150. Accordingly, in order to manufacture a high quality quantum dot polarizing plate, ultraviolet rays (UV) may be irradiated to be incident on a substrate (not shown) when the quantum dot layer 300 is cured.

When the quantum dot layer 300 is cured, the substrate (not shown) may be detached from the quantum dot layer 300 (S600A). In other words, as described above, the substrate (not shown) may have a configuration for easily forming the quantum dot layer 300 to be described later. Accordingly, when the formation of the quantum dot layer 300 is completed, the substrate (not shown) may be detached from the polarizing plate 100 to be described later.

Thereafter, the barrier layer 500 may be formed on the other surface of the detached quantum dot layer 300 (S700A). The barrier layer 500 may be formed in the same manner as the barrier layer 500 of the quantum dot polarizer described in the embodiment of the present invention.

The method of manufacturing the quantum dot polarizing plate according to the embodiment of the present invention has been described above. Hereinafter, the results of evaluating the characteristics of the quantum dot polarizer according to the experimental example of the present invention described above.

Preparation of the quantum dot polarizer according to the experimental example of the present invention

The release treated glass substrate was prepared by washing. In addition, the commercially available polarizing film was prepared as a polyvinyl alcohol film in which iodine dye was mixed between triacetyl cellulose (Cellulose Triacetate) film.

Acrylic resin was applied to one surface of the cleaned glass substrate for adhesion of the commercial polarizing film. Thereafter, one surface of the commercially available polarizing film was attached onto the acrylic resin.

On the other side of the commercially available polarizing film, an ultraviolet curable resin (Ultravioletray Curing Resin) containing a quantum dot (Quantum Dot, QD) was blade coated to a height of 0.1 mm.

In order to cure the blade-coated ultraviolet curing resin (Ultravioletray Curing Resin), ultraviolet (UV) was irradiated with 1 J / ㎠. At this time, ultraviolet (UV) was irradiated toward the other surface of the release-treated glass substrate.

After the ultraviolet curing resin (Ultravioletray Curing Resin) was cured, the release-treated glass substrate was separated. Then, a barrier material including perhydropolysilazane and dibutyl ether was spin coated on the cured ultraviolet curing resin (Ultravioletray Curing Resin). At this time, the concentration of the barrier material is 10wt%, spin coating was performed for 30 seconds at 3000 rpm.

Thereafter, the barrier material was irradiated with extreme UV having a wavelength of 200 nm or less for about 20 minutes to sinter perhydropolysilazane.

5 is an emission spectrum graph of a quantum dot polarizer according to an experimental example of the present invention.

Referring to FIG. 5, a 448 nm blue LED was irradiated to the quantum dot polarizer according to the experimental example of the present invention to measure the light emission characteristics of the quantum dot polarizer.

As can be seen in Figure 5, when the quantum dot polarizer is irradiated with a blue LED of 448nm, it can be seen that the green light of 535nm and red light of 630nm is emitted. Therefore, the quantum dot polarizing plate according to the experimental example of the present invention can be seen that blue light and red light are emitted together to form white light.

6 is a graph of color reproducibility of the quantum dot polarizer according to the experimental example of the present invention.

Referring to FIG. 6, the color reproducibility of the quantum dot polarizer was calculated using the emission spectrum of the quantum dot polarizer according to the experimental example of FIG. 5.

As can be seen in Figure 6, it can be seen that the quantum dot polarizer according to the experimental example of the present invention has an excellent color reproduction rate as compared to the display color standard sRGB.

In the above, the quantum dot polarizer and the manufacturing method and the image display apparatus including the same according to the embodiment and the experimental example of the present invention have been described. The quantum dot polarizer and the manufacturing method and the image display device including the same include a polarizing plate, a quantum dot layer and a barrier layer, the thickness is reduced, the process cost is reduced, deterioration prevented high thin film, low cost and high efficiency quantum dot polarizer and manufacturing A method and an image display device including the same can be provided.

Although it has been described above with reference to the preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.

100: polarizing plate 110: adhesive layer
130: protective layer 131: first protective layer
135: second protective layer 150: polarizing layer
300: quantum dot layer 500: barrier layer

Claims (20)

Adhesive layer;
A first protective layer on one surface of the adhesive layer;
The polarizing layer on one surface of the first protective layer;
A second protective layer on one surface of the polarizing layer;
A quantum dot layer disposed on one surface of the second protective layer; And
A quantum dot polarizer comprising a barrier layer located on one surface of the quantum dot layer. According to claim 1,
The barrier layer is formed by a normal pressure (atm) process, quantum dot polarizer. The method of claim 2,
The barrier layer is
The quantum dot polarizing plate is formed by coating a solution containing a barrier material in a solvent-free or aliphatic solvent on one surface of the quantum dot layer during an atmospheric process. According to claim 1,
The barrier layer has a thickness of 0.01 mm or less. According to claim 1,
The thickness of the quantum dot layer is 0.01mm to 0.2mm, quantum dot polarizing plate. According to claim 1,
The first and second protective layers have a thickness of 0.025 mm to 0.075 mm, quantum dot polarizer. According to claim 1,
Located between the liquid crystal display panel (Liqiud Crystal Display Panel) and the light source (Backlight Unit),
The other surface of the adhesive layer is attached to one surface of the glass substrate in the liquid crystal display panel, and the other surface of the barrier layer is positioned to face the light source. Preparing a first protective layer;
Forming a polarizing layer on one surface of the first protective layer;
Forming a second protective layer on one surface of the polarizing layer;
Forming a quantum dot layer on one surface of the second protective layer;
Forming a barrier layer on one surface of the quantum dot layer; And
Forming an adhesive layer on the other surface of the first protective layer, the method of manufacturing a quantum dot polarizing plate. The method of claim 8,
The other surface of the said adhesive layer is a manufacturing method of a quantum dot polarizing plate to which a release protective film is affixed. The method of claim 8,
The barrier layer is formed by a normal pressure (1 atm) process, the method of manufacturing a quantum dot polarizing plate. The method of claim 10,
The barrier layer is
A method of manufacturing a quantum dot polarizing plate is formed by coating a solution containing a barrier material in a solvent-free or aliphatic solvent on one surface of the quantum dot layer during an atmospheric pressure process. The method of claim 8,
The barrier layer has a thickness of 0.01 mm or less. The method of claim 9,
The thickness of the quantum dot layer is 0.01mm to 0.2mm, the manufacturing method of the quantum dot polarizing plate. Preparing a substrate;
Forming a quantum dot layer on one surface of the substrate;
Attaching a polarizing plate to one surface of the quantum dot layer;
Curing the quantum dot layer;
Detaching the substrate from the quantum dot layer; And
And forming the barrier layer on the other surface of the quantum dot layer from which the substrate is detached. The method of claim 14,
The substrate is a method of manufacturing a quantum dot polarizing plate, a release treated substrate. The method of claim 14,
After preparing the substrate,
The method of manufacturing a quantum dot polarizer further comprising the step of cleaning the substrate. The method of claim 14,
The polarizer is
Adhesive layer;
A first protective layer on one surface of the adhesive layer;
A polarizing layer positioned on one surface of the first protective layer; And
Method of manufacturing a quantum dot polarizing plate comprising a second protective layer located on one surface of the polarizing layer. The method of claim 14,
In the step of curing the quantum dot layer
Ultraviolet (Ultravioletray) is irradiated toward the other surface of the substrate to cure the quantum dot, the manufacturing method of the quantum dot polarizer. The method of claim 14,
In the step of forming the barrier layer on the other surface of the quantum dot layer from which the substrate is detached
Applying a solution comprising a barrier material; And
And sintering the applied solution with Extreme Ultraviolet Ray having a wavelength of 200 nm or less. The method of claim 19,
In the step of applying a solution containing the barrier material
A method of manufacturing a quantum dot polarizer by coating a coating solution containing a barrier material in a solvent-free or aliphatic solvent on the other side of the quantum dot layer.

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