KR20160122985A - Polarizer plate and method for preparing the polarizer plate and display device comprising the same - Google Patents

Abstract

A polarizing plate, a display including the polarizing plate, and a method of manufacturing the polarizing plate are provided. The polarizer may comprise a polarizer comprising a quantum dot material, and a protective film disposed on at least one side of the polarizer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarizing plate and a polarizing plate,

The present invention relates to a polarizing plate, a method of manufacturing a polarizing plate, and a display device including the same.

In a liquid crystal display device or an electro luminescence device, the transmitted light is optically modulated in accordance with an input video signal, or a luminance pixel corresponding to a video signal is self-emitted, thereby obtaining a grayscale for each pixel. The layer for modulating the transmitted light or the light emission luminance for each pixel is referred to as a modulation function layer. In the liquid crystal display device, the liquid crystal layer corresponds to the modulation function layer, and in the organic light emitting element, the organic EL light emission layer corresponds to the modulation function layer.

Since the liquid crystal layer itself is not a light valve that completely blocks light, a polarizing plate may be disposed on both sides in the vertical direction of both liquid crystal layers in the vertical direction of the liquid crystal layer, that is, on the backlight side and the viewer side of the viewer have.

On the other hand, since the light emitting layer of the organic light emitting device does not irradiate light when no voltage is applied, it is possible to display a full black color and provide a relatively high contrast as compared with a liquid crystal display device. Therefore, the organic light emitting element does not arrange the polarizer for the purpose of shielding the light emission. However, in the organic light emitting device, the external light can be reflected by the metal wiring therein, which causes a decrease in contrast. Therefore, a polarizing plate is disposed to prevent this.

Therefore, in recent years, studies for producing a polarizing plate having excellent optical properties are underway.

Accordingly, it is an object of the present invention to provide a polarizing plate having excellent optical characteristics and a display device including the polarizing plate.

It is another object of the present invention to provide a polarizing plate manufacturing method having excellent optical properties.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing the same.

According to an aspect of the present invention, a polarizing plate may include a polarizer including a quantum dot material, and a protective film disposed on at least one surface of the polarizer.

The quantum dot material may include any one of Si-based nanocrystals, II-VI-based compound semiconductor nanocrystals, III-V-based compound semiconductor nanocrystals, IV-VI-based compound semiconductor nanocrystals, .

The II-VI group compound semiconductor nanocrystals may be selected from the group consisting of CdS, CdTe, ZnSe, At least one selected from the group consisting of CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HggZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnSTe.

The III-V group compound semiconductor nanocrystals may be at least one selected from the group consisting of GaPAs, AlNP, AlNAs, AlPAs, InNP, InNAs, InPAs, GaAlNP, GaAlNAs, GaAlPAs, GaInNP, GaInNAs, GaInPAs, InAlNP, InAlNAs, And may include one or more.

In addition, the IV-VI group compound semiconductor nanocrystals may include SbTe.

In addition, the quantum dot material may be contained in the polarizer in a range of more than 0 wt% to 5 wt% or less.

According to an aspect of the present invention, there is provided a polarizing plate manufacturing method comprising the steps of preparing a polyvinyl alcohol film, dyeing and crosslinking iodine or a dichroic dye to the polyvinyl alcohol film, And arranging the quantum dot material in the vinyl alcohol-based film.

Also, the arranging step may be performed simultaneously with the step of performing the dyeing and crosslinking.

In addition, the arranging step may be performed by applying a dispersion solvent in which a quantum dot material is dispersed onto the polyvinyl alcohol-based film.

The method may further include the step of laminating a protective film on at least one side of the polarizer with an adhesive interposed therebetween.

According to an aspect of the present invention, there is provided a display device including a display panel and a polarizer disposed on at least one surface of the display panel, wherein the polarizer includes a polarizer including a quantum dot material, And may include a protective film disposed on one side.

Further, the display panel may include a liquid crystal cell.

The polarizing plate may be disposed on the viewer side of the display panel.

The details of other embodiments are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

The polarizing plate of the present invention and the display device including the same can have excellent optical characteristics.

In addition, a polarizing plate having excellent optical properties as described above can be produced by the polarizing plate producing method of the present invention.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a cross-sectional view of a polarizer according to an embodiment of the present invention.
2 is a cross-sectional view of a polarizer according to an embodiment of the present invention.
3 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
4 is a cross-sectional view schematically showing a polarizer attached to a display panel according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

It is to be understood that elements or layers are referred to as being "on " other elements or layers, including both intervening layers or other elements directly on or in between. Like reference numerals refer to like elements throughout the specification.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

It should also be understood that the steps constituting the manufacturing method described herein may be sequential or sequential, or one step and the other step constituting one manufacturing method may be performed in the order described in the specification It is not construed as limited. Therefore, the order of the steps of the manufacturing method can be changed within a range that can be easily understood by a person skilled in the art, and a change apparent to a person skilled in the art accompanying thereto is included in the scope of the present invention.

Polarizer

FIG. 1 is a cross-sectional view of a polarizer according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a polarizer according to an embodiment of the present invention.

1 and 2, a polarizing plate 1 according to an embodiment of the present invention may include a polarizer 10 including a quantum dot material and a protective film 20 disposed on at least one side of the polarizer 10. [ have.

The polarizer 10 is a film which can convert natural light or polarized light into arbitrary polarized light, and can generally be converted into specific linearly polarized light. As the polarizer 10, a hydrophilic polymer film such as a polyvinyl alcohol film, a partially porous polyvinyl alcohol film or a partially saponified ethylene-vinyl acetate copolymer film may be produced by adsorbing a dichroic substance such as iodine or a dichroic dye, , A polyene-based oriented film such as a dehydrated product of phlyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride, and the like, but the present invention is not limited to these. In the exemplary embodiment, a polyvinyl alcohol-based film having iodine which can have a high degree of polarization and is excellent in adhesion to the protective film 120 is exemplified, but not limited thereto.

The polarizer 10 may include a quantum dot material. The quantum dot material may be a semiconductor nanoparticle having a size of several nanometers to several tens of nanometers. The quantum dot material may have a quantum quinfinement effect Different light means I have a characteristic. More specifically, the quantum dot material generates strong light in a narrow wavelength band, and the light emitted by the quantum dot material is generated as electrons in an unstable (excited) state from a conduction band to a valence band. At this time, the quantum dot material has a property of emitting light with a shorter wavelength as the particle size is smaller and emitting light with a longer wavelength as the particle size is larger. Therefore, by regulating the size of the quantum dot material, it is possible to emit light in a visible light region of a desired wavelength.

The quantum dot material may include any one of Si-based nanocrystals, II-VI-based compound semiconductor nanocrystals, III-V-based compound semiconductor nanocrystals, IV-VI-based compound semiconductor nanocrystals, .

The II-VI group compound semiconductor nanocrystals may be selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, And at least one selected from the group consisting of CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HggZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnSTe.

The III-V group compound semiconductor nanocrystals may be at least one selected from the group consisting of GaPAs, AlNP, AlNAs, AlPAs, InNP, InNAs, InPAs, GaAlNP, GaAlNAs, GaAlPAs, GaInNP, GaInNAs, GaInPAs, InAlNP, InAlNAs, . ≪ / RTI >

The IV-VI group compound semiconductor nanocrystal may include SbTe.

The smaller the particle size of the quantum dot material, the shorter wavelength light is generated. The larger the particle size, the longer wavelength light is generated. For example, a size of 55 to 65 Å generates red light, a size of 40 to 50 Å generates green light, and a size of 20 to 35 Å produces blue light. As described above, the quantum dot material can enhance the optical efficiency of the polarizing plate by generating strong light in a narrow wavelength band at a wavelength corresponding to each color, according to the size of the particles.

The quantum dot material may be contained in the polarizer 10 in a range of more than 0 wt% to 5 wt% or less. If the amount of the quantum dot material exceeds 5% by weight, cross-linking of the crosslinked iodine or the dichroic dye in the polarizer 10 may be decomposed to degrade the polarization function.

On the other hand, according to the polarizing plate 2 shown in Fig. 2, the protective film 20 is disposed on only one side of the polarizer 10, and the adhesive 5 is interposed between the polarizer 10 and the protective film 20 The polarizer 10 and the protective film 20 can be bonded. On the other side of the polarizer 10, an adhesive 30 for attaching the polarizing plate 2 to a display panel to be described later may be disposed. As shown in Fig. 2, by arranging the protective film 20 on only one surface of the polarizer 10, a thinner polarizing plate can be manufactured.

The adhesive may include an aqueous adhesive or an ultraviolet curable adhesive, which is well known in the art, and thus a detailed description thereof will be omitted.

3 is a cross-sectional view of a polarizer according to another embodiment of the present invention. 3, the polarizing plate 3 may be provided with protective films 20 and 40 on both sides of the polarizer 10 and may be provided with an adhesive agent 5 between the protective films 20 and 40 and the polarizer 10. [ , 15) may be interposed. Thereby, the polarizer 10 can be more stably protected.

The protective film 20, 40 may include a polyester-based material. Examples of the polyester include terephthalic acid, isophthalic acid, orthophthalic acid, 2,5-naphthalenedicarboxylic acid, 2, Naphthalene dicarboxylic acid, 1,5-naphthalene dicarboxylic acid, diphenylcarboxylic acid, diphenoxyethane dicarboxylic acid, diphenylsulfone carboxylic acid, Anthracene dicarboxylic acid, 1,3-cyclopentanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, hexahydroterephthalic acid, hexahydroisophthalic acid, malonic acid , Dimethyl malonic acid, succinic acid, 3,3-diethyl succinic acid, glutaric acid, 2,2-dimethylglutaric acid, adipic acid, 2-methyladipic acid, trimethyladipic acid, pimelic acid, Dimer acid, sebacic acid, suberic acid, dodecadicarboxylic acid and the like, and aliphatic dicarboxylic acids such as ethylene glycol, propylene glycol, Cyclohexanedimethanol, 1,4-cyclohexanedimethanol, decamethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, Diols such as 1,6-hexadiol, 2,2-bis (4-hydroxyphenyl) propane and bis (4-hydroxyphenyl) sulfone. A homopolymer obtained by polycondensing one kind of each of the above materials or a copolymer obtained by polycondensing at least one kind of dicarboxylic acid and two or more kinds of diols or a copolymer obtained by polycondensing two or more kinds of dicarboxylic acids and one or more kinds of diols And a blend resin obtained by blending two or more of these homopolymers or copolymers.

In an exemplary embodiment, an aromatic polyester may be used from the viewpoint that the polyester exhibits crystallinity, and examples thereof include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and copolymers thereof However, the present invention is not limited to these.

Further, the protective films 20 and 40 may be a triple coextruded structure including a polyethylene terephthalate type, a polyethylene naphthalate type, or a copolymer resin containing them.

Method for producing polarizer

A polarizing plate manufacturing method according to an embodiment of the present invention includes the steps of preparing a polyvinyl alcohol film, dyeing and crosslinking iodine or a dichroic dye to the polyvinyl alcohol film, And arranging the material.

The polyvinyl alcohol film used as the polarizer may be composed of materials as described above for the polarizing plate, and the description has been given above, and a detailed description thereof will be omitted.

The dyeing is a step of introducing, for example, iodine or dyes, pigments, or mixtures thereof into a polyvinyl alcohol-based film, and adsorbing them to the inside of the film. The iodine, dye, or pigment molecules absorb light that oscillates in the direction of stretching of the polarizer, and light that oscillates in the vertical direction is transmitted to obtain polarized light having a specific vibration direction.

Sealing can be achieved, for example, by impregnating a laminated film laminated on a substrate with a solution of iodine or a dichroic substance, such as a polyvinyl alcohol-based film or a polyvinyl alcohol-based film. For example, the temperature of the iodine solution may be in the range of 20 ° C to 50 ° C, and the duration of the iodine solution may be in the range of 10 to 300 seconds. When an iodine solution is used as the iodine solution, an aqueous solution containing iodine (I ₂ ) and iodide ions, for example, potassium iodide (KI) used as a solubilizing agent may be used. In an exemplary embodiment, the concentration of iodine (I ₂ ) ranges from 0.01 to 0.5 wt% based on the total weight of the aqueous solution, and the concentration of potassium iodide (KI) ranges from 0.01 to 10 wt% based on the total weight of the aqueous solution have.

In an exemplary embodiment, it may further comprise a swelling step prior to performing the staining. The swelling step may soften the molecular chains of the polyvinyl alcohol-based film and loosen the molecular chains so that the dichroic materials are homogeneously dyed in the polyvinyl alcohol-based film during the dyeing process, have. In this swelling process, the polyvinyl alcohol film may be stretched. In an exemplary embodiment, it may be carried out in a wet process in a swelling tank containing a swelling liquid. In addition, the swelling temperature may vary depending on the film thickness and the like, and may range, for example, from 15 캜 to 40 캜.

Also, after the salt-adhering step, a crosslinking process may be included. When the molecules of iodine or dichroic substance are dyed on the polyvinyl alcohol film in the step of salt-adsorption, the dichroic molecules are adsorbed on the polymer matrix of the polyvinyl alcohol-based film by using boric acid, borate, or the like. Examples of the crosslinking method include a deposition method in which a polyvinyl alcohol-based film is immersed in an aqueous solution of boric acid or the like, but the present invention is not limited thereto. The crosslinking method may be carried out by a coating method or a spraying method, It is possible.

On the other hand, the step of arranging the quantum dot material in the polyvinyl alcohol-based film may be carried out simultaneously with the step of dying and crosslinking, and may be performed by applying a dispersion solvent in which the quantum dot material is dispersed onto the polyvinyl alcohol- have. However, the present invention is not limited to this. It may be performed by impregnating the polyvinyl alcohol film with a dispersed solvent phase in which the quantum dot material is dispersed, or a solution of iodine or a dichroic substance in a dyeing or crosslinking step, By so doing, the quantum dot material can be contained in the polyvinyl alcohol-based film.

Next, the step of stretching the polyvinyl alcohol-based film may be included. The stretching step may be a wet stretching method and / or a dry stretching method common to the art in the polyvinyl alcohol film.

Examples of the dry stretching method include inter-roll stretching method, heating roll stretching method, compression stretching method, tenter stretching method, and the like, and the wet stretching method Non-limiting examples include a tenter stretching method and a roll-to-roll stretching method.

In the case of the wet drawing method, drawing can be performed in an alcohol, water, or boric acid aqueous solution. For example, solvents such as methyl alcohol and propyl alcohol may be used, but the present invention is not limited thereto.

The stretching temperature and time may be appropriately selected depending on the material of the film, the desired elongation, the method of use, and the like. The stretching step may be uniaxial stretching or biaxial stretching.

The steps of the stranding and stretching need not always be the same order, but may be carried out by appropriately selecting the order according to the processing equipment and equipment, and in some cases, the stretching step may proceed simultaneously with the stranding or crosslinking. When the stretching step is carried out simultaneously with the salting, the stretching step can be carried out in the iodine solution. On the other hand, in the case where the stretching step proceeds simultaneously with the crosslinking, the stretching step can be performed in an aqueous solution of boric acid. At the same time, since the quantum dot material is contained in the iodine solution or the boric acid aqueous solution, the quantum dot material can be contained in the polyvinyl alcohol film together with the dyeing, crosslinking, and stretching processes.

On the other hand, when a base film is used, the base film may be removed to obtain a polyvinyl alcohol-based film in which a quantum dot material is contained and iodine or a dichroic dye is oriented in a roughened orientation, that is, a polarizer.

The steps of preparing the polarizer are exemplary and any of various methods used in the art for producing the polarizer can be applied. For example, without using the base film, only the polyvinyl alcohol film, , And the like, but the present invention is not limited thereto.

Meanwhile, the method may further include a step of bonding the protective film to at least one side of the polarizer produced through the adhesive. That is, a protective film may be laminated on one surface or both surfaces of the polarizer.

The method for bonding the protective film is not particularly limited and may be carried out using an adhesive or a pressure sensitive adhesive widely known in the art. The pressure sensitive adhesive or adhesive may be suitably selected in consideration of the material of the protective film to be used, .

Display device

A display device according to an embodiment of the present invention includes a display panel and a polarizer disposed on at least one surface of the display panel, wherein the polarizer includes a polarizer including a quantum dot material, and a protective film disposed on at least one surface of the polarizer, . ≪ / RTI > That is, the display device includes the polarizer including the quantum dot material in the above-described polarizer, so that the optical efficiency can be further increased.

The display panel may be an organic light emitting display panel or a liquid crystal cell including a liquid crystal layer, for example, but not limited to, a portion for displaying an image in accordance with an applied signal.

In the case where the display panel of the present invention is an organic light emitting display panel, the organic light emitting display panel may include a plurality of pixels, and each of the pixels may include an organic light emitting layer (OLED) an organic light emitting diode (OLED) and a pixel circuit for independently driving the OLED. The pixel circuit may mainly include a switching thin film transistor (TFT), a capacitor, and a driving TFT. The switching thin film transistor charges a data voltage in a capacitor in response to a scan pulse, and the driving TFT controls an amount of current supplied to the OLED according to a data voltage charged in the capacitor, thereby adjusting an amount of light emitted from the OLED, Can be displayed. On the other hand, the organic light emitting display panel is widely known in the art, and a detailed description thereof will be omitted.

The polarizing plate may be disposed on the viewing side of the organic light emitting display panel. That is, the polarizer may be attached to the side where the viewer observes the image displayed from the OLED panel. Therefore, it is possible to prevent a decrease in contrast caused by reflection of external light.

In another embodiment, the display device may further include a retardation film disposed between the polarizing plate and the display panel. That is, the display panel, the retardation film, and the polarizing plate may be sequentially stacked.

The retardation film compensates the phase difference of light by a desired value to improve the viewing angle, the contrast ratio, the color characteristic, and the like. It is possible to apply a retardation film having a retardation value required by a person skilled in the art And can be omitted if necessary. Also, as the retardation film, a film having an inverse wavelength dispersion characteristic may be used to improve anti-reflection characteristics. The retardation film is widely known in the art, and a detailed description thereof will be omitted.

4 is a cross-sectional view schematically showing a polarizer attached to a display panel in the case where the display panel includes a liquid crystal cell according to an embodiment of the present invention. Hereinafter, with reference to FIG. 4, Hereinafter, the display device will be described.

The liquid crystal cell 100 may include a liquid crystal layer 130 interposed between the first substrate 110 and the second substrate 120. One of the first substrate 110 and the second substrate 120 A liquid crystal driving electrode, a wiring pattern, a thin film transistor element, an alignment film, and the like may be formed on the other substrate.

The operation mode of the liquid crystal cell may be, for example, a twisted nematic mode or an electrically controlled birefringence mode. The birefringence control mode may include a vertical alignment method, an OCB (Optically Compensated) method, and an IPS (In-Plane Switching) method.

In the display device, the polarizing plate may be formed on the upper and lower portions of the display panel. That is, the polarizing plate may be interposed between the backlight unit and the display panel. It is possible to transmit only the light that vibrates in a specific direction among the light incident from the backlight unit by the polarizing plate positioned under the display device.

Further, the polarizing plate may be located on the upper side of the display panel. At this time, the polarizing plate including the quantum dot material of the present invention inside the polarizer is disposed on the viewer side of the display panel, so that light finally emitted from the liquid crystal cell can be made stronger in a narrower wavelength band. As a result, a clearer image can be displayed. However, the present invention is not limited thereto, and if necessary, a polarizing plate positioned under the display panel may include a quantum dot material in the polarizer 70.

When two polarizing plates are disposed with the liquid crystal cell therebetween, the transmission axis of the polyvinyl alcohol-based film constituting each polarizing plate may be orthogonal or parallel. In addition, a retardation film may be further included between the display panel including the liquid crystal cell and the upper and / or lower polyvinyl alcohol film. The phase difference film has already been described above, and a duplicate description will be omitted.

4, the polarizing plates positioned on both surfaces of the display panel are provided with protective films 20, 40, 80 , 90) may be attached to the polarizing plate, and the adhesive 50, 60 may be disposed on one side of the polarizing plate to attach the polarizing plate to the display panel. However, the present invention is not limited to this, and as described in the polarizing plate, the protective film on one surface of the polarizer may be omitted and only the adhesive may be formed.

It will be appreciated that the embodiments described above are all exemplary and that different embodiments may be applied in combination.

1: Polarizer
2, 3: polarizer
4: Display device
10: Polarizer
20, 40, 80, 90: protective film
5, 15, 25, 35: Adhesive
30, 40, 60: Adhesive
100: liquid crystal cell
110: first substrate
120: second substrate
130: liquid crystal layer

Claims (13)

A polarizer comprising a quantum dot material; And
And a protective film disposed on at least one surface of the polarizer. The method according to claim 1,
Wherein the quantum dot material comprises a nanocrystal of any one of Si-based nanocrystals, II-VI-based compound semiconductor nanocrystals, III-V-based compound semiconductor nanocrystals, IV-VI-based compound semiconductor nanocrystals and mixtures thereof. 3. The method of claim 2,
The II-VI group compound semiconductor nanocrystals may be selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, At least one polarizer selected from the group consisting of CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HggZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnSTe. 3. The method of claim 2,
The III-V group compound semiconductor nanocrystals may be at least one selected from the group consisting of GaPAs, AlNP, AlNAs, AlPAs, InNP, InNAs, InPAs, GaAlNP, GaAlNAs, GaAlPAs, GaInNP, GaInNAs, GaInPAs, InAlNP, InAlNAs, . 3. The method of claim 2,
Wherein the IV-VI group compound semiconductor nanocrystal comprises SbTe. The method according to claim 1,
Wherein the quantum dot material is contained in the polarizer in a range of more than 0 wt% to 5 wt% or less. Preparing a polyvinyl alcohol-based film;
Dyeing and crosslinking the polyvinyl alcohol-based film with iodine or a dichroic dye; And
And arranging a quantum dot material in the polyvinyl alcohol-based film. 8. The method of claim 7,
Wherein the arranging step is performed simultaneously with the step of dyeing and crosslinking. 9. The method of claim 8,
Wherein the arranging step is performed by applying a dispersion solvent in which a quantum dot material is dispersed to the polyvinyl alcohol film. The method of claim 7, wherein
Further comprising laminating a protective film on at least one side of the polyvinyl alcohol-based film with an adhesive interposed therebetween. Display panel; And
And a polarizing plate disposed on at least one side of the display panel,
Wherein the polarizer comprises a polarizer including a quantum dot material, and a protective film disposed on at least one surface of the polarizer. 12. The method of claim 11,
Wherein the display panel includes a liquid crystal cell. 13. The method of claim 12,
And the polarizing plate is disposed on the viewer side of the display panel.

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