KR20160112499A - Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same - Google Patents
Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same Download PDFInfo
- Publication number
- KR20160112499A KR20160112499A KR1020150038317A KR20150038317A KR20160112499A KR 20160112499 A KR20160112499 A KR 20160112499A KR 1020150038317 A KR1020150038317 A KR 1020150038317A KR 20150038317 A KR20150038317 A KR 20150038317A KR 20160112499 A KR20160112499 A KR 20160112499A
- Authority
- KR
- South Korea
- Prior art keywords
- yellow
- color filter
- resin composition
- curable resin
- weight
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials For Photolithography (AREA)
- Optical Filters (AREA)
Abstract
Description
The present invention relates to a yellow curable resin composition capable of improving the color purity of a color filter and effectively preventing deterioration of light efficiency, thereby realizing a high quality image, a color filter including the same, and an image display device.
A color filter is a thin film type optical component that extracts three colors of red, green, and blue in white light and makes it possible in fine pixel units.
The color filter includes a black matrix layer formed in a predetermined pattern on a transparent substrate so as to shield a boundary portion between each pixel, and a plurality of colors (typically, red (R), green (G) And blue (B)) are arranged in a predetermined order.
In general, a color filter can be produced by coating three or more colors on a transparent substrate by a dyeing method, an electrodeposition method, a printing method, a pigment dispersion method, etc. Recently, a pigment dispersion method using a pigment- It accomplishes.
In the pigment dispersion method, a photosensitive resin composition containing a colorant, an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an epoxy resin, a solvent and other additives is coated on a transparent substrate provided with a black matrix, A method of forming a colored thin film by repeating a series of steps of exposing and then removing a non-exposed portion with a solvent and thermally curing it, and has been actively applied to manufacturing LCDs for mobile phones, notebooks, monitors, TVs and the like.
In recent years, a photosensitive resin composition for a color filter using a pigment dispersion method having various advantages is required not only excellent pattern characteristics but also high color reproducibility and further improved performance such as high brightness and high contrast ratio.
However, in color reproduction, light emitted from a light source is transmitted through a color filter. In this process, a part of light is absorbed by the color filter, resulting in a decrease in light efficiency. Further, due to the pigment characteristics as a color filter, There are fundamental limitations.
To solve this problem, a color filter using a quantum dot photosensitive resin composition has been proposed.
Korean Patent Laid-Open Publication No. 2007-0094679 discloses that a color filter layer formed of quantum dots can be provided to improve color reproducibility. Korean Patent Laid-Open Publication No. 2009-0036373 discloses that a conventional color filter is composed of a light emitting layer It is possible to improve the luminous efficiency and improve the display quality.
When the quantum dots are used as the light emitting material of the color filter, the emission waveform can be narrowed, the high color rendering capability which can not be realized by the pigment, and the excellent luminance characteristic are obtained. However, due to the low stability of the quantum dots performed in the manufacture of color filters, crystals or the like are generated on the surface, resulting in a problem that the luminous efficiency of the quantum dots is greatly lowered.
Particularly, an image display apparatus equipped with a quantum dot color filter uses blue light as a light source, and the blue light used here is mixed with self-emission light in the red, green, and blue pixel layers. That is, there is no problem in the case of the blue pixel layer, but in the case of the red and green pixel layers, the emission of pure red and green becomes difficult. For example, in the case of a green pixel layer, an emission peak appears at 500 to 550 nm by a quantum dot, while when blue light is used, a peak due to blue light at 380 to 400 nm occurs simultaneously and consequently a color purity of a color filter is lowered.
Therefore, there is a disadvantage that image quality is deteriorated because there is a limitation in displaying a desired color reproducibly.
The present applicant has conducted various studies to increase the color purity of the self-luminous pixel layer including quantum dots and to suppress the decrease in the light efficiency. As a result, it has been found that a yellow colorant is contained so as to absorb blue light mixed in red and green The color purity and the light efficiency of the color filter can be effectively protected when the coating film is formed.
Accordingly, an object of the present invention is to provide a yellow curable resin composition.
Another object of the present invention is to provide a color filter capable of effectively preventing the deterioration of color purity and luminous efficiency by forming the yellow curable resin composition on the self-luminescent pixel layer.
It is still another object of the present invention to provide an image display device having the color filter and having high luminance characteristics.
In order to achieve the above object, the present invention provides a color filter comprising a yellow colorant, an alkali-soluble resin, a photocurable compound and an initiator, wherein the yellow colorant has a transmittance (T ? ) Of 50 to 60% at a wavelength of 470 to 510 nm, A yellow curable resin composition which satisfies the transmittance characteristic of the formula (1) is provided:
[Equation 1]
T (? -20 nm ) < 2%
T (? + 20 nm ) ? 90%
(In the above formula (1), T is the transmittance (%) and? Is the wavelength of 470 nm to 510 nm)
In addition,
materials;
A self-emission pixel layer formed on the base material and including quantum dots; And
And a yellow coating layer formed on the self-luminous pixel layer,
The yellow coating layer provides a color filter made of the yellow curable resin composition.
Wherein the yellow coating layer is located on the red pixel layer and the green pixel layer.
Further, the present invention provides an image display apparatus provided with the color filter.
Wherein the color filter is disposed in a direction in which the yellow coating layer is opposed to the light source.
The yellow curable resin composition according to the present invention reduces blue light emission in the red and green emission spectrum self-emitted in the red and green pixel layers in a display device using blue light, thereby improving overall color purity and light efficiency.
This resin composition is formed on the self-luminescent pixel layer of the color filter, and the image display device having the self-luminous pixel layer implements a high-quality image.
1 is a cross-sectional view illustrating a color filter according to an embodiment of the present invention.
2 is a cross-sectional view showing the arrangement of color filters for a light source of the present invention.
3 is an emission spectrum of the color filter manufactured in Example 1 (a) and Comparative Example 4 (b).
In the present invention, a yellow curable resin composition capable of reducing blue wavelengths in self-emitted red and green emission spectra to improve overall color purity and light efficiency, a color filter including the same, and an image display device are provided.
Unlike a color filter including a pigment, a color filter using quantum dots forms a self-luminescent pixel layer on a pixel region so as to emit red, green, and blue light as a self-emitting material. The self-emission pixel layer absorbs the emitted light and has a self-emission characteristic of emitting red light, blue light, and green light by itself. That is, when red, green, and blue quantum dots are irradiated with light, red light is emitted at 600 to 700 nm, green light is emitted at 490 to 590 nm, and blue light is emitted at 400 to 480 nm. At this time, the light source of the image display device on which the color filter is mounted uses blue light. When the emission spectrum of the self-luminous pixel layer of red and green is observed due to the blue light, the emission spectrum of blue light is present at 400 to 480 nm, The color mixture of the pixel layer occurs, which occurs seriously in the red and green pixel layers.
Accordingly, the present invention provides a yellow curable resin composition having an absorption spectrum at 330 to 550 nm so as to quench the emission spectrum of the blue light. This yellow curable resin composition contains a yellow coloring agent, so that a green pixel layer in which green and blue are mixed is colored only in green, and a red pixel layer in which red and blue are mixed in color. Thus, pure green and pure red light So that the color purity and light efficiency of the light emitted by the phosphor can be improved.
≪ Yellow curable composition >
The yellow curable resin composition is prepared using a yellow colorant, an alkali soluble resin, a photopolymerizable compound, an initiator and a solvent.
The yellow colorant needs to absorb the low wavelength region (about 330 to 550 nm) in the visible region in the wavelength region of 380 to 780 nm and transmit or reflect the light in the other region as the spectroscopic characteristic. The transmittance of 470 to 510 nm, which satisfies a specific range, is used, and the transmittance at ± 20 nm of the above range is controlled.
In the case of the red light emitting layer, the blue light and the green light overlap each other in the region of 470 to 510 nm in the case of the green light emitting layer. In this region, it is necessary to minimize the loss of green light and the blue light source as much as possible. In order to satisfy both the transmission and blocking characteristics simultaneously, the spectroscopy (blocking / transmission) of light in the region of 470 nm to 510 nm It should be done with clarity.
Therefore, the larger the difference in transmittance in the ± 20 nm region with respect to the center wavelength is, the more clearly the spectral appears. In the present invention, a yellow colorant having a transmittance controlled at ± 20 nm is used.
If the specific yellow coloring agent is limited to the material itself, the yellow coloring agent can be used or can not be used in accordance with methods such as atomization of the yellow coloring agent or improvement in color purity, and the reproducibility is lowered. .
Preferably, the yellow colorant should have a transmittance (T ? ) Of 50 to 60% at a wavelength of 470 nm to 510 nm and satisfy the transmittance characteristic of the following formula (1) in order to ensure the above effect:
[Equation 1]
T (? -20 nm ) < 2%
T (? + 20 nm ) ? 90%
(In the above formula (1), T is the transmittance (%) and? Is the wavelength of 470 nm to 510 nm)
In the above formula (1), the yellow colorant having a transmittance lower than the above range can not sufficiently prevent the influence of blue light. On the other hand, when the yellow colorant is out of the above range, the yellow peak also appears on the color filter, May be deteriorated. Therefore, it is suitably used within the above range.
A coating film containing a yellow colorant was prepared in Production Example 4 of the present invention, and the transmittance thereof was measured. When the transmittance satisfied the numerical value of the formula (1) (Production Examples 4-1, 4-2 and 4-5) The color purity of the color filter can be increased.
The method of measuring the transmittance is not particularly limited. For example, a method of measuring the transmission spectrum of a dispersion of an aqueous solution of an yellow curable resin composition or an organic solvent system, and a method of measuring a transmission spectrum of the dispersion of the yellow curable resin composition applied to glass, a transparent electrode, or a film.
The yellow colorant is not particularly limited in the present invention, and it is possible to select the red colorant among the following yellow colorants. At this time, a yellow colorant may be used as the yellow colorant, and it may be a pigment, a dye or a pigment. Specifically, the color index (CI. Issued by The Society of Dyers and Colors) is given as follows. However, it is preferable that the colorant is a halogen-free colorant in terms of environmental load reduction and human impact.
Monoazo pigments:
Pyrazolone azo pigments:
Diazo pigments: Pigment Yellow 12, 16, 63, 83, 126, 127, 128, 152, 170, 188;
Azomethine pigments:
Anthraquinone pigments: Pigment Yellow 108, 147, 193, 197, 199, 202;
Isoindolinone pigments: Pigment Yellow 109, 110, 139, 173, 185;
Quinoline pigments: Pigment Yellow 115;
Quinophthalone pigments: Pigment Yellow 138;
Polycyclic pigment: Pigment Yellow 148;
Dioxime pigments: Pigment Yellow 153;
Benzimidazolone pigments: Pigment Yellow 154, 175, 180, 181;
Heterocyclic Pigment: Pigment Yellow 192;
Perinone pigments: Pigment Yellow 196;
Inorganic pigments: pigments 31, 32, 30, 119, 157, 162, 184;
Cyanine pigments; Xanthene type pigments; Merocyanine type pigments; Dipyrrin pigments; Arylmethine pigments; Acridine pigments; Coumarin-based pigments; Oxazine pigments; Tetrapyrrole pigments.
These pigments may be subjected to a surface treatment using a pigment derivative in which a rosin treatment, an acidic group or a basic group is introduced, a surface graft treatment using a polymer compound or the like, a fine particle treatment using sulfuric acid, a cleaning with an organic solvent or water Processing or the like may have been performed.
In particular, among the yellow colorants exemplified above, C.I. Pigment Yellow 185 may preferably be used.
The yellow colorant is used in an amount of 5 to 80% by weight, preferably 10 to 50% by weight in the entire yellow curable resin composition. If the content is less than the above range, it is difficult to expect the above-described color purity and optical efficiency improvement effect due to blocking of blue light. On the contrary, even if the content exceeds the above range, As appropriate.
The yellow colorant in the present invention can be used together with a dispersant and a dispersion aid if necessary.
As the dispersing agent, for example, a suitable dispersing agent such as a cationic, anionic, or nonionic type can be used, but a polymeric dispersant is preferable. Specific examples thereof include acrylic copolymers, polyurethanes, polyesters, polyethyleneimines, polyallylamines, and the like. DISPERBYK-2000, DISPERBYK-2001, BYK-LPN6919 and BYK-LPN21116 (manufactured by BYK), Solsperse 5000 (manufactured by Lubrizol), and the like are commercially available. DisperBYK-162, DisperBYK-163, DisperBYK-165, DisperBYK-167, DisperBYK-170 and DisperBYK-182 (manufactured by BYK , Solsperse 24000 (manufactured by Lubrizol Corporation) as polyethyleneimine, Ajisper PB821, Ajisper PB822 and Ajisper PB880 (manufactured by Ajinomoto Fine Techno Co., Ltd.) as polyesters.
Examples of the dispersion aid include pigment derivatives, specifically, copper phthalocyanine, diketopyrrolopyrrole, and sulfonic acid derivatives of quinophthalone.
These dispersants may be used alone or in combination of two or more. The content of the dispersant is usually 1 part by weight or less, preferably 0.1 to 0.7 part by weight, more preferably 0.05 to 0.5 part by weight, based on 1 part by weight of the yellow colorant. If the content of the dispersing agent is too large, there is a possibility that developability and the like are damaged.
The yellow curable resin composition according to the present invention together with the yellow colorant includes an alkali-soluble resin, a photo-curable compound, an initiator and a solvent.
The alkali-soluble resin constituting the yellow curable resin composition of the present invention has reactivity and alkali solubility due to the action of heat and functions as a binder resin for a solid content including a colorant and functions as a binder resin, Any of the binder resins soluble in the alkaline developer used in the present invention can be used.
The alkali-soluble resin according to the present invention is selected and used having an acid value of 20 to 200 (KOH mg / g). The acid value is a value measured as the amount (mg) of potassium hydroxide necessary to neutralize 1 g of the acrylic polymer, and is related to the solubility. If the acid value of the alkali-soluble resin is less than the above-mentioned range, it is difficult to secure a sufficient developing rate. Conversely, if the acid value exceeds the above range, the adhesion with the substrate is reduced, and short-circuiting of the pattern tends to occur. A problem occurs.
Further, in order to improve the surface hardness of the alkali-soluble resin for use as a color filter, the molecular weight and molecular weight distribution (Mw / Mn) may be limited. Preferably, the weight average molecular weight is 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da, and the molecular weight distribution is 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having the above molecular weight and molecular weight distribution in the above range can improve the hardness and the high residual film ratio as mentioned above, as well as the solubility of the non-exposed portion in the developer and improve the resolution.
The alkali-soluble resin may be an acrylic monomer having an unsaturated double bond. In the case of a dispersion resin having an acid value, it is possible to prepare a copolymer by copolymerizing a monomer having a carboxyl group and an unsaturated bond and a monomer having an unsaturated bond capable of copolymerization therewith.
Specific examples of the monomer having a carboxylic acid group and an unsaturated bond include monocarboxylic acids such as acrylic acid, methacrylic acid and crotonic acid; Dicarboxylic acids such as fumaric acid, mesaconic acid and itaconic acid; And anhydrides of these dicarboxylic acids; (meth) acrylates of a polymer having a carboxyl group and a hydroxyl group at both terminals such as? -carboxypolycaprolactone mono (meth) acrylate, and the like.
More specifically, it is possible to use acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid or alkyl ester of maleic acid. The alkyl maleic acid ester includes monomethyl maleic acid, ethyl maleic acid, n-butyl maleic acid, n-hexyl maleic acid, n-octyl maleic acid, 2-ethylhexyl maleic acid, n-nonyl maleic acid or n-dodecyl maleic acid.
The monomer having a carboxyl group and an unsaturated bond and the copolymerizable monomer thereof may be used alone or in combination of two or more.
The copolymerizable monomer may be an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated ether compound, a cyanide vinyl compound , An unsaturated imide compound, an aliphatic conjugated diene compound, a macromonomer having a monoacryloyl group or monomethacryloyl group at the end of the molecular chain, a vulcanizable monomer, and combinations thereof.
Specifically, the copolymerizable monomers include styrene, vinyltoluene,? -Methylstyrene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m Aromatic vinyl compounds such as vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether or p-vinyl benzyl glycidyl ether; Propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, alkyl (meth) acrylates such as sec-butyl (meth) acrylate or t-butyl (meth) acrylate; Cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0. 2.6 ] alicyclic (meth) acrylates such as decan-8-yl (meth) acrylate, 2-dicyclopentanyloxyethyl (meth) acrylate or isobornyl (meth) acrylate; Aryl (meth) acrylates such as phenyl (meth) acrylate or benzyl (meth) acrylate; Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate or 2-hydroxypropyl (meth) acrylate; N -cyclohexylmaleimide, N -benzylmaleimide, N -phenylmaleimide, N- o-hydroxyphenylmaleimide, N- m-hydroxyphenylmaleimide, N -p-hydroxyphenylmaleimide, N -o--phenyl maleimide, N-phenyl maleimide -m-, N -p- methylphenyl maleimide, N-methoxyphenyl maleimide -o-, -m- N-methoxyphenyl maleimide, N-methoxyphenyl -p- N-substituted maleimide-based compounds such as maleimide; Unsaturated amide compounds such as (meth) acrylamide and N , N' -dimethyl (meth) acrylamide; 3- (methacryloyloxymethyl) -2-trifluoromethyl oxetane, 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) 2- (methacryloyloxymethyl) oxetane, 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane and the like Unsaturated oxetane compounds, and the like.
The content of the alkali-soluble resin according to the present invention is not particularly limited and may be, for example, 2 to 80% by weight, preferably 10 to 70% by weight in 100% by weight of the yellow curable resin composition. If the content falls within the above range, it is easy to form a yellow coating layer. In the process including the developing step, reduction of the film thickness of the pixel portion of the exposed portion is prevented at the time of development, and the dropout of the non-pixel portion is improved.
The photopolymerizable compound is not particularly limited as long as it is a compound capable of polymerizing under the action of a photopolymerization initiator described later, but preferably a monofunctional photopolymerizable compound, a bifunctional photopolymerizable compound or a trifunctional or higher functional polyfunctional photopolymerizable compound .
Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, N- And Arylnix M-101 (Doagosei), KAYARAD TC-110S (Nippon Kayaku) or Biscoat 158 (Osaka Yuki Kagaku Kogyo) are commercially available products.
Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) (Acryloyloxyethyl) ether of bisphenol A and 3-methylpentanediol di (meth) acrylate. Commercially available products include Aronix M-210, M-1100, 1200 (Doagosei), KAYARAD HDDA (Nippon Kayaku), Viscoat 260 (Osaka Yuki Kagaku Kogyo), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., Ltd.).
Specific examples of the polyfunctional photopolymerizable compound having three or more functional groups include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate (Meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (Meth) acrylate such as Aronix M-309, TO-1382 (Doagosei), KAYARAD TMPTA, KAYARAD DPHA or KAYARAD DPHA-40H (Nippon Kayaku).
Of the photopolymerizable compounds exemplified above, trifunctional or higher (meth) acrylate esters and urethane (meth) acrylates are particularly preferable because they have excellent polymerizability and can improve the strength.
The photopolymerizable compounds exemplified above may be used alone or in combination of two or more.
The photopolymerizable compound is preferably contained in an amount of 5 to 70% by weight, more preferably 15 to 50% by weight, based on 100% by weight of the yellow curable resin composition of the present invention. When the photopolymerizable compound is contained in an amount of 5 to 70% by weight based on the above-mentioned criteria, the strength and smoothness of the pixel portion are preferably improved.
The initiator can be used without particular limitation as long as it can polymerize the photopolymerizable compound. As the initiator, a photopolymerization initiator or a thermal polymerization initiator can be used, and a photopolymerization initiator can be used for facilitating the formation of a coating film and for a process advantage.
In particular, from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability, or price, the photopolymerization initiator is preferably an acetophenone based compound, a benzophenone based compound, a triazine based compound, a nonimidazole based compound, It is preferable to use at least one compound selected from the group consisting of
Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2-hydroxy- 1- [4- 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one, 2-methylcyclohexyl phenyl ketone, 2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one -On or 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one.
Examples of the benzophenone compound include benzophenone, methyl 0-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3 ', 4,4'-tetra tert-butylperoxycarbonyl) benzophenone or 2,4,6-trimethylbenzophenone.
Specific examples of the triazine compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6 - (4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, (Trichloromethyl) -6- [2- (5-methylfuran-2- (4-methoxystyryl) -1,3,5-triazine, Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan- , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine or 2,4- ) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine.
Specific examples of the imidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbimidazole, 2,2'-bis (2,3- Phenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) , 2,2'-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) 4 ', 5,5'-tetraphenyl-1,2'-biimidazole or an imidazole compound in which the phenyl group at the 4,4', 5,5 'position is substituted by a carboalkoxy group. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3- , 5,5'-tetraphenylbiimidazole or 2,2-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'- Is used.
Specific examples of the oxime compounds include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and the like. Commercially available products include OXE01 and OXE02 of BASF.
Examples of the thioxanthone compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone or 1-chloro-4-propanecioxanthone .
Further, other photopolymerization initiators and the like may be further used in combination within the range not impairing the effects of the present invention. Examples thereof include a benzoin compound and an anthracene compound. These compounds may be used alone or in combination of two or more.
Examples of the benzoin-based compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin isobutyl ether.
Examples of the anthracene compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, 2-ethyl-9,10-diethoxyanthracene, have.
Other examples include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 10-butyl-2-chloroacridone, 2-ethyl anthraquinone, benzyl-9,10-phenanthrenequinone, camphorquinone, phenylclyoxylic acid A methyl or a titanocene compound may be used in combination as a photopolymerization initiator.
The photopolymerization initiator may be contained in an amount of 0.1 to 40% by weight, preferably 1 to 30% by weight, based on 100% by weight of the yellow curable resin composition of the present invention. Within this content range, the yellow curable resin composition is highly sensitized and the exposure time is shortened, which is preferable because productivity can be improved and high resolution can be maintained. Further, the strength of the pixel portion formed using the composition of the above-described conditions and the smoothness of the surface of the pixel portion can be improved.
In order to improve the sensitivity of the yellow curable resin composition of the present invention, a photopolymerization initiator may further be added. By containing the photopolymerization initiator, the sensitivity can be further increased and the productivity can be improved.
As the photopolymerization initiation auxiliary, for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound and an organic sulfur compound having a thiol group can be preferably used.
As the amine compound, an aromatic amine compound is preferably used. Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- (Dimethylamino) benzophenone (commonly referred to as " N , N -dimethylaminobenzoic acid, 2-ethylhexyl benzoate, N , N -dimethylparatoluidine, 4,4'- Heiller ketone) or 4,4'-bis (diethylamino) benzophenone.
The carboxylic acid compound is preferably an aromatic heteroacetic acid, and more specifically, it is preferably an aromatic heteroaromatic acid such as phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio Acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N -phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N -naphthylglycine, or naphthoxyacetic acid.
Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxyethyl) 1,3,5-triazine -2,4,6 (1 H, 3 H, 5 H) - one tree, trimethylolpropane tris (3-Merced gapto propionate), pentaerythritol tetrakis (3- Mercaptobutylate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate) or tetraethylene glycol bis (3-mercaptopropionate) And the like.
Further, commercially available products such as Darocur 1173, Igacure 184, Igacure 907 and Igacure 1700 (manufactured by Ciba) can also be used. These may be used alone or in combination of two or more.
Such a cationic ion polymerization initiator can be easily obtained as a commercial product, and examples thereof include "Kayarad PCI-220", "Kayarad PCI-620" (trade name, manufactured by Nippon Kayaku Co., "ADEKA OPTMA SP-150", "ADEKA OPTMA SP-170" (trade name, manufactured by ADEKA K.K.), "CI-6990" [manufactured by Union Carbide Co., DPI-101 "," CIT-1370 "," CIT-1682 "," CIP-1866S "," CIP-2048S "," CIP- 2064S " , "DPI-102", "DPI-103", "DPI-105", "MPI-103", "MPI-105", "BBI- TPS-103, TPS-105, MDS-103, MDS-105, DTS-102, DTS- 103 "(manufactured by Midori Kagaku Co., Ltd.) and" PI-2074 "(manufactured by Rhodia).
In particular, "CI-5102" manufactured by Nihon Soda Co., Ltd. is one of preferred initiators.
The content of the photopolymerization initiator is preferably the same as that of the photopolymerization initiator. When the content of the photopolymerization initiator is used in the above-mentioned range, the sensitivity of the yellow curable resin composition becomes higher and the productivity of the color filter formed using the composition is improved Effect.
The solvent according to the present invention is not particularly limited and may be an organic solvent conventionally used in the art. The solvent used in the conventional yellow curable resin composition is not particularly limited so long as it is effective in dissolving other components, and in particular, ethers, aromatic hydrocarbons, ketones, alcohols, esters or amides are preferable Do.
Specific examples include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Propylene glycol dialkyl ethers such as propylene glycol monomethyl ether; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, and methoxypentyl acetate; Aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; cyclic esters such as? -butyrolactone; And the like. These may be used alone or in combination of two or more.
Since the viscosity of the solvent may vary depending on the coating method or apparatus, the content of the yellow curable resin composition having the above-mentioned composition is appropriately adjusted so that the concentration thereof is 5 to 90% by weight, preferably 15 to 80% by weight. Such a content is selected in consideration of dispersion stability of the composition and easiness of process in the production process (for example, applicability).
In addition, the yellow curable resin composition according to the present invention may further contain known additives for various purposes. As such additives, additives such as fillers, other polymer compounds, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, anti-aggregation agents, and curing agents may be used in combination. These additives may be used alone or in combination of two or more, and it is preferable to use 1 wt% or less in the whole composition in consideration of light efficiency and the like.
Specific examples of the filler include glass, silica, alumina and the like.
Specific examples of other polymer compounds include curable resins such as epoxy resin and maleimide resin, and thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane have.
The surfactant is a component that improves the film-forming property of the yellow curable resin composition and includes, for example, polyoxyethylene alkyl ethers, polyoxyethylene alkylpethers, polyethylene glycol diesters, sorbitan fatty phase esters, (Trade name) manufactured by Shin-Etsu Chemical Co., Ltd., POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), FEP (trade name, manufactured by Kyoeisha Chemical Co., Ltd.), and polyvinyl pyrrolidone (EFTOP) (manufactured by TOKEM PRODUCTS CO., LTD.), MEGAFAC (manufactured by Dainippon Ink and Chemicals, Incorporated), Flourad (manufactured by Sumitomo 3M Limited), Asahi guard, Surflon (Manufactured by Asahi Glass Co., Ltd.), SOLSPERSE (manufactured by Genene), EFKA (manufactured by EFKA Chemical), and PB 821 (manufactured by Ajinomoto Co., Ltd.).
Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N Aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (2-aminoethyl) (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3- Methoxysilane and the like.
Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol) and 2,6-di-t-butyl-4-methylphenol.
Specific examples of the ultraviolet absorber include 2- (3-t-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzothiazole and alkoxybenzophenone. Specific examples of the anti-aggregation agent include sodium polyacrylate.
The curing agent is a component for increasing deep curing and mechanical strength, and the type thereof is not particularly limited, and examples thereof include epoxy compounds, polyfunctional isocyanate compounds, melamine compounds, and oxetane compounds.
The epoxy compound is not particularly limited and includes, for example, bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolak epoxy resin, other aromatic epoxy resin, Epoxy resins, glycidyl ester resins, glycidyl amine resins, or brominated derivatives of such epoxy resins; Aliphatic, alicyclic or aromatic epoxy compounds other than epoxy resins and brominated derivatives thereof; Butadiene (co) polymeric epoxide; Isoprene (co) polymeric epoxide; Glycidyl (meth) acrylate (co) polymers; Triglycidyl isocyanurate and the like.
The oxetane compound is not particularly limited and includes, for example, carbonate bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane, cyclohexanedicarboxylic acid bisoxetane and the like .
In order to further increase the degree of curing, the yellow curable resin composition according to the present invention may further comprise a curing aid. The curing aid which can be used is not particularly limited in the present invention, and any curing aid known in the art can be used.
Representative examples are tertiary amines such as benzyldimethylamine, triethanolamine, triethylenediamine, dimethylaminoethanol and tri (dimethylaminomethyl) phenol; Imidazoles such as 2-methylimidazole and 2-phenylimidazole; Organic phosphines such as triphenylphosphine, diphenylphosphine and phenylphosphine; And tetraphenylboron salts such as tetraphenylphosphonium tetraphenylborate and triphenylphosphine tetraphenylborate.
The preparation of the above-mentioned yellow curable composition is not particularly limited in the present invention, but follows the known production method of the curable composition.
For example, a yellow colorant is mixed with a solvent in advance and dispersed using a bead mill or the like until the average particle diameter of the colorant becomes about 0.2 μm or less. At this time, a pigment dispersant may be used if necessary, and some or all of the alkali-soluble resin may be blended. The remaining part of the alkali-soluble resin, the photopolymerizable compound and the photopolymerization initiator, the other components to be used if necessary, and, if necessary, the additional solvent are further added to the obtained dispersion (hereinafter, also referred to as mill base) To obtain a desired yellow curable resin composition.
The yellow curable resin composition thus prepared can be used to produce a color filter by wet coating. In this case, the wet coating method can be applied to a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater) May be used.
<Color filter>
Further, the present invention provides a color filter made of the above-mentioned yellow curable resin composition.
The pixel layer of the color filter according to the present invention is a self-luminescent pixel layer including quantum dots. In order to absorb the blue luminescence spectrum, the yellow colorant is not mixed with the quantum dots in the self-luminescent pixel layer, Layer. That is, the light self-emitted by the quantum dot emits light of a specific wavelength. When the yellow colorant is used in the self-luminescent pixel layer at this time, red, blue, and green self-emitted light are not emitted to the outside of the pixel layer. In addition, since the yellow coloring agent is intended to extinguish red and green blue light that have already been emitted, it should be located on the self-luminescent pixel layer with respect to the light source, and when the light source and the self- none.
FIG. 1 is a cross-sectional view of a color filter according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating an arrangement of color filters for a light source of the present invention.
1 and 2, the
The
In the
The above effect is highly dependent on the content of the yellow coloring agent contained in the
In the
The self-
The quantum dot is a nano-sized semiconductor material. The atoms form molecules, and the molecules form a cluster of small molecules called clusters to form nanoparticles. These nanoparticles are called quantum dots, especially when they have semiconductor properties. The quantum dots emit energy according to the corresponding energy bandgap when they reach the excited state from the outside.
The color filter of the present invention includes such a luminous luminescence quantum dot particle, and the color filter manufactured therefrom can emit light (optical luminescence) by light irradiation.
The quantum dot according to the present invention is not particularly limited as long as it is a quantum dot capable of emitting light by stimulation with light, and for example, a II-VI group semiconductor compound; III-V semiconductor compound; IV-VI semiconductor compound; Group IV elements or compounds containing them; And combinations thereof. These may be used alone or in combination of two or more.
Wherein the II-VI semiconductor compound is selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; Trivalent compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and mixtures thereof; And a Group III-V semiconductor compound may be selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, , GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; A trivalent compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; And a silicate compound selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, , The IV-VI semiconductor compound is selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; Ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And a silane compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. The Group IV element or a compound containing the Group IV element may be selected from the group consisting of Si, Ge, ≪ / RTI > And these elemental compounds selected from the group consisting of SiC, SiGe, and mixtures thereof.
Further, the quantum dots may have a single homogeneous structure; A dual structure such as a core-shell, gradient structure or the like; Or a mixed structure thereof.
In the dual structure of the core-shell, the material forming each core and the shell may be made of the different semiconductor compounds mentioned above. For example, the core may include, but is not limited to, one or more materials selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS and ZnO. The shell may include, but is not limited to, one or more materials selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe.
The color filter of the present invention is characterized in that the color filter of the present invention includes a quantum dot indicating a red color, a quantum dot representing a green color, and a quantum dot representing a blue color, such that the colored photosensitive resin composition used for producing a typical color filter includes red, And may be one selected from the above-mentioned red, green, blue, and combinations thereof.
The quantum dot can be synthesized by a wet chemical process, an organometallic chemical vapor deposition process, or a molecular beam epitaxy process.
The wet chemical process is a method of growing particles by adding a precursor material to an organic solvent. When the crystal is grown, the organic solvent naturally coordinates to the surface of the quantum dot crystal to serve as a dispersing agent to control crystal growth. Therefore, the metal organic chemical vapor deposition (MOCVD) or molecular molecular epitaxy (MBE) beam epitaxy), it is possible to control the growth of nanoparticles through an easier and less expensive process.
The self-luminescent photosensitive resin composition containing such a quantum dot preferably contains 3 to 80% by weight of a quantum dots, 5 to 80% by weight of an alkali soluble resin, 5 to 70% by weight of a photopolymerizable compound, 0.1 to 20% by weight of a photopolymerization initiator %. ≪ / RTI > Further, it may further include the above-mentioned additives.
The manufacture of the color filter according to the invention
S1) forming barrier ribs defining red, blue and green pixel regions on a substrate;
S2) forming a self-emission pixel layer in the pixel region; And
S3) a step of forming the self-luminous pixel layer and the barrier ribs, and forming a yellow coating layer thereon.
At this time, the yellow coating layer is formed only on the red and green pixel regions.
The barrier, the self-luminescent pixel layer, and the yellow coating layer may be formed by applying each composition and exposing, developing, and curing the composition in a predetermined pattern.
If necessary, the color filter may further include a black matrix.
<Image Display Device>
The present invention also provides an image display device including the color filter.
The color filter of the present invention is applicable not only to a general liquid crystal display device but also to various image display devices such as an electroluminescence display device, a plasma display device, and a field emission display device.
The image display apparatus of the present invention may include a color filter including a red pattern layer containing red QD particles, a green pattern layer containing green quantum dot particles, and a blue pattern layer containing blue QDs. In such a case, the emitted light of the light source is not particularly limited when applied to an image display apparatus, but a light source that emits blue light is preferable from the viewpoint of better color reproducibility
According to another embodiment of the present invention, the image display apparatus of the present invention may include a color filter including only a pattern layer of two colors of a red pattern layer, a green pattern layer, and a blue pattern layer. In such a case, the color filter further includes a transparent pattern layer not containing quantum dot particles.
In the case where only the pattern layer of two colors is provided, a light source that emits light having a wavelength that represents the remaining color that is not included can be used. For example, when a red pattern layer and a green pattern layer are included, a light source that emits blue light can be used. In such a case, red quantum dot particles emit red light and rust quantum dot particles emit green light, and the transparent pattern layer transmits blue light as it is and exhibits blue color.
The image display apparatus of the present invention is excellent in light efficiency, exhibits high luminance, excellent in color reproducibility, and has a wide viewing angle.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.
< Manufacturing example 1> CdSe / ZnS Core shell Structural Optical luminescence green Qdot Particle synthesis
CdO (0.4 mmol), zinc acetate (4 mmol) and oleic acid (5.5 mL) were added to the reactor together with 1-Octadecene (20 mL) and heated to 150 ° C. Lt; / RTI > The reaction was then left under vacuum at 100 mTorr for 20 minutes to remove the acetic acid formed by the displacement of oleic acid into zinc.
Then, a transparent mixture was obtained by applying heat at 310 DEG C, and after maintaining the temperature at 310 DEG C for 20 minutes, 0.4 mmol of Se powder and 2.3 mmol of S powder were dissolved in 3 mL of trioctylphosphine, and Se And S solution were rapidly injected into a reactor containing Cd (OA) 2 and Zn (OA) 2 solutions.
The resulting mixture was grown at 310 ° C for 5 minutes, and growth was stopped using an ice bath.
Then, the precipitate was precipitated with ethanol, the quantum dots were separated using a centrifugal separator, and the extra impurities were washed with chloroform and ethanol, whereby particles having a core particle size and a shell thickness summed to 3 to 5 nm, which were stabilized with oleic acid Green CdSe (core) / ZnS (shell) structure was obtained.
Manufacturing example 2: Synthesis of alkali-soluble resin
Preparing a stirrer, a flask equipped with a thermometer a reflux condenser, a dropping funnel and a nitrogen feed pipe and, on the other hand, N - benzyl maleimide 45 parts by weight, methacrylic acid 45 parts by weight, tricyclo decyl methacrylate, 10 parts by weight, t -butyl peroxy-2-ethylhexanoate 4 parts by weight of propylene glycol monomethyl
Thereafter, 395 parts by weight of propylene glycol monomethyl ether acetate was introduced into the flask, the atmosphere in the flask was changed to nitrogen in air, and the temperature of the flask was elevated to 90 DEG C with stirring.
Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The temperature was raised to 110 DEG C for 1 hour and maintained for 3 hours. Thereafter, a gas introduction tube was introduced, and a bubble of oxygen / nitrogen = 5/95 (v / v) I started the ring.
Subsequently, 10 parts by weight of glycidyl methacrylate, 0.4 part by weight of 2,2'-methylenebis (4-methyl-6- t- butylphenol) and 0.8 part by weight of triethylamine were charged into a flask, The reaction was continued and then cooled to room temperature to obtain an alkali-soluble resin having a solid content of 29.1% by weight, a weight average molecular weight of 32,000 and an acid value of 114 mgKOH / g.
Manufacturing example 3: Self-luminous The pixel layer For forming Self-luminous Preparation of Photosensitive Resin Composition
The components were mixed as shown in Table 1, diluted with propylene glycol monomethyl ether acetate so that the total solid content became 20% by weight, and sufficiently stirred to obtain a self-luminescent photosensitive resin composition.
2) Quantum dots 1-2: Lumidot TM CdSe / ZnS 640 (manufactured by Aldrich)
3) Photopolymerizable compound: dipentaerythritol pentaacrylate succinic acid monoester (5-functional photopolymerizable compound containing carboxylic acid) (TO-1382, Donga Synthetic Agent)
4) Polymerization initiator: Irgaquer-907 (manufactured by Ciba)
5) Alkali-soluble resin: The alkali-soluble resin of Production Example 2
Manufacturing example 4: Preparation of yellow curable resin composition for forming yellow coating layer
After mixing the components as shown in Tables 2 to 4 below, the mixture was diluted with propylene glycol monomethyl ether acetate so that the total solid content was 20% by weight, and sufficiently stirred to obtain a yellow curable resin composition. Table 2 shows the types of the yellow colorant used in the curable resin composition for forming the yellow coating layer.
coloring agent
2) Photopolymerizable compound: dipentaerythritol pentaacrylate succinic acid monoester
(5-functional photopolymerizable compound containing carboxylic acid) (TO-1382, Dong-A Synthetic Agent)
3) Polymerization initiator: Irgaquer-907 (manufactured by Ciba)
4) Alkali-soluble resin: The alkali-soluble resin of Production Example 2
Experimental Example 1: Analysis of permeation characteristics of yellow curable resin composition
The permeation characteristics of the yellow curable resin composition prepared in Preparation Example 4 were examined in the following manner.
First, the compositions of Production Examples 4-1 to 4-5 were applied on a glass substrate by spin coating, and then placed on a heating plate and held at a temperature of 100 ° C for 3 minutes to form a thin film.
Then, light was irradiated at an exposure dose of 200 mJ / cm 2 (365 nm) using an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Ushio DENKI Co., Ltd., and no special optical filter was used. Thereafter, the first pixel layer was formed to a thickness of 2 탆 by heating in a heating oven at 150 캜 for 10 minutes
The prepared yellow coating layer was measured for transmittance using an Olympus spectrometer OPS-200, and the obtained results are shown in Table 4 below.
Referring to Table 4, the yellow coating layers of Production Examples 4-1, 4-2 and 4-5 exhibited 90% or more of T λ + 20 nm , and about 74% in Production Examples 4-3 and 4-4 To 75%.
Example 1 to 3 and Comparative Examples 1 to 6: Manufacture of color filters
Using the self-luminescent photosensitive resin composition prepared in Preparation Example 3 and the yellow curable resin composition prepared in Production Example 4, a color filter was prepared with the compositions shown in Tables 5 and 6 below.
(One) Self-luminous The pixel layer formation
First, the self-luminescent photosensitive resin composition of Production Example 3 was coated on a glass substrate by spin coating, and then placed on a heating plate and held at a temperature of 100 캜 for 3 minutes to form a thin film.
Then, light was irradiated at an exposure dose of 200 mJ / cm 2 (365 nm) using an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Ushio DENKI Co., Ltd., and no special optical filter was used.
The thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 80 seconds to develop. The glass plate coated with the thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 캜 for 10 minutes to form a self-luminous pixel layer having a thickness of 5 탆.
(2) Formation of yellow coating layer
A yellow coating layer having a thickness of 2 탆 was formed on the self-luminescent pixel layer in the same manner as in the above (1). At this time, the yellow curable resin composition of Production Example 4 was used as the yellow coating layer.
Experimental Example 1: Emission spectrum analysis of color filters
The emission peaks of the color filters of Example 1 and Comparative Example 4 were measured with a spectrometer manufactured by Ocean Optics, and the results are shown in FIG. In this case, XLamp® XRE-Roy (Royal blue) manufactured by Cree having a center wavelength of 450 nm was used as a blue light source.
3 is an emission spectrum of the color filter manufactured in Example 1 (a) and Comparative Example 4 (b).
3 (a), it can be seen that a peak is present only in the pure green region of 530 to 550 nm in the case of the color filter of the multilayer structure of Example 1. FIG.
In comparison, in the case of the color filter of Comparative Example 4 in which the yellow coating layer of FIG. 3 (b) is not formed (only the self-luminous pixel layer exists), a blue peak appears near 450 nm with a green peak of 530 to 550 nm, It can be seen that color mixing occurs.
Experimental Example 2: Measurement of luminescence intensity of color filter
The light emission intensities of the color filters manufactured in Examples 1 to 3 and Comparative Examples 1 to 6 were measured as follows.
Examples 1, 3, and 4 and Comparative Examples 1 to 6 were prepared by using XLamp® XRE-Roy (Royal blue) manufactured by Cree having a center wavelength of 450 nm as a blue light source. In Examples 1, 3 and 4 and Comparative Examples 1 to 6, And the light intensity at 450 nm in the light source region and at 640 nm in the light conversion region was measured using a spectrometer manufactured by Ocean Optics.
The results obtained are shown in Table 6. The intensity of 450 nm of the measured light source region is small and the intensity value of 520 nm or 640 nm of the light emitting region is higher, which means that the color purity is excellent and the luminescence property is excellent.
In Table 7, in the case of the color filters of Examples 1 to 3 in which the transmission characteristic of the yellow colorant satisfies Equation (1), the light emission intensity at 450 nm of the blue light source region is 50 or less, The emission intensity at 520 nm was 40,000 or more, and the emission intensity at 640 nm, which is a red emission region, was 35,000 or more.
In contrast, in the case of the color filters of Comparative Examples 1 to 3 in which Production Examples 4-4, 4-5, and 4-6 in which the yellow colorant had poor transmission characteristics, the light emission intensity of the self-emission region 520 nm was 30,000 or less There is a falling problem.
In addition, the color filter of Comparative Example 4 in which the yellow coating layer was not formed was excellent in light emission intensity, but the blue light was also strong at 450 nm as a light source region, and as a result, pure green color could not be obtained.
In the case of the color filter of Comparative Example 5 in which the quantum dots and the yellow coloring agent are mixed to form the self-luminescent pixel layer, it is understood that sufficient green light emission is not obtained at 520 nm because the yellow colorant absorbs the blue light source.
In addition, in the case of the color filter of Comparative Example 6 in which the order of stacking the self-luminescent pixel layer and the yellow coating layer is different, it was confirmed that the yellow colored layer interrupted the blue light source to prevent the self-luminous layer from emitting light, The positional relationship of the coating layer is also important.
The color filter according to the present invention improves color purity and light efficiency and realizes a high quality image when introduced into an image display apparatus.
10: color filter 11: substrate
13: Self-luminous pixel layer
13a:
15: yellow coating layer
51a, 51b, 51c:
101: Light source
Claims (7)
[Equation 1]
T (? -20 nm ) < 2%
T (? + 20 nm ) ? 90%
(In the above formula (1), T is the transmittance (%) and? Is the wavelength of 470 nm to 510 nm)
From 5 to 80% by weight of a yellow colorant,
5 to 70% by weight of an alkali-soluble resin,
5 to 70% by weight of a photocurable compound, and
And 0.1 to 20% by weight of an initiator.
A self-emission pixel layer formed on the base material and including quantum dots; And
And a yellow coating layer formed on the self-luminous pixel layer,
Characterized in that the yellow coating layer is made of the yellow curable resin composition of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150038317A KR20160112499A (en) | 2015-03-19 | 2015-03-19 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150038317A KR20160112499A (en) | 2015-03-19 | 2015-03-19 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020180047961A Division KR101932221B1 (en) | 2018-04-25 | 2018-04-25 | Yellow curable resin composition, and color filter and display device comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20160112499A true KR20160112499A (en) | 2016-09-28 |
Family
ID=57101796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150038317A KR20160112499A (en) | 2015-03-19 | 2015-03-19 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20160112499A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219669A (en) * | 2017-07-11 | 2017-09-29 | 深圳市华星光电技术有限公司 | A kind of display device |
| CN107975763A (en) * | 2017-11-28 | 2018-05-01 | 宁波激智科技股份有限公司 | A kind of quantum dot film with anti-blue light effect |
| WO2018093021A1 (en) * | 2016-11-16 | 2018-05-24 | 동우화인켐 주식회사 | Yellow curable resin composition, and color filter and image display device comprising same |
| KR101865499B1 (en) * | 2017-02-14 | 2018-06-07 | 동우 화인켐 주식회사 | Color Filter and Display Device |
| WO2018110808A1 (en) * | 2016-12-14 | 2018-06-21 | 동우화인켐 주식회사 | Yellow curable resin composition, color filter manufactured using same and image display device |
| KR20190108766A (en) * | 2018-03-15 | 2019-09-25 | 동우 화인켐 주식회사 | Yellow curableresin composition, color filter and display device having the same |
| KR20190108710A (en) * | 2018-03-15 | 2019-09-25 | 동우 화인켐 주식회사 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
| US11450714B2 (en) | 2018-12-18 | 2022-09-20 | Samsung Display Co., Ltd. | Display panel and display device including the same |
| US12124124B2 (en) | 2016-12-20 | 2024-10-22 | Samsung Display Co., Ltd. | Display device including a circular polarizer and method of manufacturing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070094679A (en) | 2006-03-18 | 2007-09-21 | 삼성전자주식회사 | Color filter substrate |
| KR20090036373A (en) | 2007-10-09 | 2009-04-14 | 삼성전자주식회사 | Display device |
-
2015
- 2015-03-19 KR KR1020150038317A patent/KR20160112499A/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070094679A (en) | 2006-03-18 | 2007-09-21 | 삼성전자주식회사 | Color filter substrate |
| KR20090036373A (en) | 2007-10-09 | 2009-04-14 | 삼성전자주식회사 | Display device |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018093021A1 (en) * | 2016-11-16 | 2018-05-24 | 동우화인켐 주식회사 | Yellow curable resin composition, and color filter and image display device comprising same |
| KR20180055063A (en) * | 2016-11-16 | 2018-05-25 | 동우 화인켐 주식회사 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
| TWI815801B (en) * | 2016-11-16 | 2023-09-21 | 南韓商東友精細化工有限公司 | Yellow curable resin composition, and color filter and image display device comprising the same |
| JP2020513467A (en) * | 2016-12-14 | 2020-05-14 | 東友ファインケム株式会社Ｄｏｎｇｗｏｏ Ｆｉｎｅ−Ｃｈｅｍ Ｃｏ．， Ｌｔｄ． | Yellow curable resin composition, color filter manufactured using the same, and image display device |
| WO2018110808A1 (en) * | 2016-12-14 | 2018-06-21 | 동우화인켐 주식회사 | Yellow curable resin composition, color filter manufactured using same and image display device |
| KR20180068625A (en) * | 2016-12-14 | 2018-06-22 | 동우 화인켐 주식회사 | Yellow curableresin composition, color filter and display device having the same |
| US12124124B2 (en) | 2016-12-20 | 2024-10-22 | Samsung Display Co., Ltd. | Display device including a circular polarizer and method of manufacturing the same |
| KR101865499B1 (en) * | 2017-02-14 | 2018-06-07 | 동우 화인켐 주식회사 | Color Filter and Display Device |
| CN110291431A (en) * | 2017-02-14 | 2019-09-27 | 东友精细化工有限公司 | Colour filter and image display device |
| WO2018151457A1 (en) * | 2017-02-14 | 2018-08-23 | 동우 화인켐 주식회사 | Color filter and image display device |
| CN110291431B (en) * | 2017-02-14 | 2022-09-02 | 东友精细化工有限公司 | Color filter and image display device |
| US11579346B2 (en) | 2017-02-14 | 2023-02-14 | Dongwoo Fine-Chem Co., Ltd. | Color filter and image display device |
| CN107219669B (en) * | 2017-07-11 | 2020-02-04 | 深圳市华星光电技术有限公司 | Display device |
| CN107219669A (en) * | 2017-07-11 | 2017-09-29 | 深圳市华星光电技术有限公司 | A kind of display device |
| CN107975763A (en) * | 2017-11-28 | 2018-05-01 | 宁波激智科技股份有限公司 | A kind of quantum dot film with anti-blue light effect |
| KR20190108766A (en) * | 2018-03-15 | 2019-09-25 | 동우 화인켐 주식회사 | Yellow curableresin composition, color filter and display device having the same |
| KR20190108710A (en) * | 2018-03-15 | 2019-09-25 | 동우 화인켐 주식회사 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
| US11450714B2 (en) | 2018-12-18 | 2022-09-20 | Samsung Display Co., Ltd. | Display panel and display device including the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101895356B1 (en) | Self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same | |
| KR101996102B1 (en) | Self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same | |
| KR101879016B1 (en) | Self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same | |
| KR101811103B1 (en) | Self emission type photosensitive resin composition, color filter using thereof and image display device having the same | |
| KR101865499B1 (en) | Color Filter and Display Device | |
| KR20160112499A (en) | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same | |
| KR102052101B1 (en) | Self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same | |
| KR102413603B1 (en) | Color filter comprising dichroic mirror and image display device having the same | |
| KR20180025248A (en) | Self emission type photosensitive resin composition, color filter using thereof and image display device having the same | |
| KR20170099016A (en) | Photosensitive resin composition and display device including color conversion layer prepared by using the same | |
| KR101941573B1 (en) | Self emission type photosensitive resin composition, color filter and image display device produced using the same | |
| KR20160035515A (en) | Photosensitive resin composition | |
| KR20170011208A (en) | Color filter, method for producing the same and image display device employing color filter | |
| KR20160091708A (en) | Color filter and image display device using the same | |
| KR20160112506A (en) | Self emission type photosensitive resin composition, and color filter comprising thereof and display device comprising of the same | |
| KR101932221B1 (en) | Yellow curable resin composition, and color filter and display device comprising the same | |
| JP6770196B2 (en) | Yellow curable resin composition, color filter and image display device manufactured using this | |
| KR20160114362A (en) | Color filter and display dece comprising thereof | |
| TWI815801B (en) | Yellow curable resin composition, and color filter and image display device comprising the same | |
| KR102511820B1 (en) | Photosensitive Resin Composition and Color Filter Using the Same | |
| KR20180036053A (en) | Self emission type photosensitive resin composition, color filter and image display device produced using the same | |
| KR102297066B1 (en) | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same | |
| KR20160107739A (en) | Self emission type photosensitive resin composition, and color filter comprising thereof and display device comprising of the same | |
| KR102376959B1 (en) | Yellow curableresin composition, color filter and display device having the same | |
| KR20190108781A (en) | Yellow curableresin composition, color filter and display device having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| A302 | Request for accelerated examination | ||
| E902 | Notification of reason for refusal | ||
| AMND | Amendment | ||
| E601 | Decision to refuse application | ||
| AMND | Amendment | ||
| A107 | Divisional application of patent |