TW201626104A - Self-emission type photosensitive resin composition, color filter and image display device - Google Patents

Abstract

The invention relates to a self-emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the color filter. More specifically, the invention relates to self-emission type photosensitive resin composition comprising quantum dots, scattered particle, photopolymerizable compound, photopolymerization initiator, alkali-soluble resin and solvent, and image display apparatus including color filter made therefrom. The color filter comprising the above composition eliminates reduced optical efficiency of current color filters. When it is introduced into image display apparatus, diverse color display can be ensured by maintaining excellent color representation characteristic and high optical efficiency for carrying out bright and colorful image quality with high grade.

Description

Self-luminous photosensitive resin composition, color filter, and image display device Technical field

The present invention relates to a self-luminous photosensitive resin composition capable of realizing high-quality image quality by ensuring excellent color reproduction characteristics and high light efficiency, a color filter manufactured by the self-luminous photosensitive resin composition, and an image display Device.

Background technique

The display industry has rapidly changed from a CRT (cathode-ray tube) to a flat panel display represented by a PDP (plasma display panel), an OLED (organic light-emitting diode), or an LCD (liquid-crystal display). Among them, LCDs are widely used in image display devices used in almost all industries because of their advantages such as thinness, excellent resolution, and low power consumption, and it is expected that there will be a large market expansion in the future.

For the LCD, the white light generated by the light source passes through the liquid crystal cell to adjust the light transmittance, and the three primary colors from the red, green, and blue color filters are mixed to achieve full color.

The color filter extracts three colors of red, green and blue from white light. A film-type optical member in which a fine pixel unit can be formed, and a pixel has a size of several tens of micrometers to several hundreds of micrometers. In order to shield a boundary portion between pixels, the color filter has a black matrix layer which is sequentially laminated on a transparent substrate to form a fixed pattern, and a plurality of colors (usually red) are arranged in a prescribed order in order to form each pixel. The structure of the pixel portions of the three primary colors of (R), green (G), and blue (B).

Therefore, the color filter is a core component for displaying color in an LCD, and is widely used for notebook computers, monitors, mobile phone terminals, and the like as the popularity of flat panel displays. In order to achieve more vivid image quality and quality advantages compared to other displays, the manufacturing technology of high color purity, high projection and low reflection color filters is being actively studied.

Usually, the color filter is produced by applying three or more kinds of hue on a transparent substrate by a pigment dispersion method, a plating method, a printing method, a dyeing method, a transfer method, an inkjet method, or the like. Recently, a pigment dispersion method using a pigment-dispersed photosensitive resin excellent in quality, degree, and performance has become mainstream.

A pigment dispersion method as one of methods for realizing a color filter is to repeatedly apply a coloring agent and an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an epoxy resin, a solvent, on a transparent substrate providing a black matrix. A photosensitive resin composition of another additive, which is a method for forming a colored film by exposing a pattern to be formed, removing a non-exposed portion with a solvent, and thermally curing, and is actively used for manufacturing a mobile phone, a notebook computer, and a monitor. LCD, TV, etc.

In order to exist in the state of insoluble particles of a solvent, the pigment has reached a limit point in order to display a more vivid and more diverse hue which has recently been required. On the other hand, dyes are superior in pigment color characteristics, and research is being conducted to replace pigments with dyes. However, since the dye is also poor in durability against light and solvent, there is a problem that it is improved or that the solvent is dissolved in the solvent to ensure sufficient solubility for the solvent used for producing the color filter.

Further, when a dye or a pigment is used as a colorant, there arises a problem that the transmission efficiency of the light source is lowered. As a result of the reduction in the transmission efficiency described above, the color reproducibility of the image display device is lowered, and it is finally difficult to realize a high-quality picture.

For this reason, not only the pattern characteristics are excellent, but also based on a wider variety of hue display, high color reproducibility, and higher brightness and high contrast, it is proposed to use self-luminous quantum dots instead of dyes and pigments.

Quantum dots are self-illuminating by a light source and are used to generate light in the visible and infrared regions. The quantum dots are smaller than the bulk exciton Bohr radius and are small crystals of II-IV, III-V, IV-VI materials generally having a diameter of 1 nm to 20 nm. Due to the quantum confinement effect, the energy difference between the electronic states of a quantum dot is a function of both the composition of the quantum dot and the physical size. Thus, the optical and electronic properties of quantum dots can be adjusted and adjusted by varying the physical size of the quantum dots. The quantum dot absorbs light having a shorter wavelength than the onset wavelength and emits light at the absorption starting wavelength. The bandwidth of the luminescence spectrum of a quantum dot is related to the temperature-dependent Doppler broadening, the Heisenberg Uncertainty Principle, and the size distribution of quantum dots. In the provided quantum dots, the emission bandwidth of the quantum dots can be controlled by changing the size. Therefore, quantum dots can produce a range of colors in which ordinary dyes and pigments are unattainable.

However, quantum dots are essentially non-scattering particles due to the size of the nanoscale. Therefore, when light passes through a color filter containing quantum dots, it has a very short optical path as compared with the case of other dyes and pigments. On the basis of insufficient thickness of the color filter, most of the light is absorbed by the quantum dots. For this reason, methods for adjusting the thickness of the color filter, increasing the concentration of quantum dots, introducing scattering particles, and the like have been proposed, but among them, when the thickness or the concentration is adjusted, problems occur in color uniformity.

For this reason, in the method of introducing scattering particles into a color filter, Korean Patent Publication No. 2010-0037283 mentions light diffusion having scattering particles composed of an organic material different from a color conversion medium layer containing quantum dots. Layer liquid crystal display device. In this case, since the layer is added, there arises a problem that the process is complicated and the thickness is increased.

Korean Patent Publication No. 2014-0109327 proposes an illumination device including a scattering particle composed of an inorganic material simultaneously with a layer containing quantum dots. The size of the scattering particles used at this time is from several micrometers to several hundreds of micrometers (μm), and the particle diameter is too large, resulting in a problem that the quality of the coating film is lowered. In particular, when the size of the scattering particles is several hundred micrometers (μm), the thickness of the coating film must be at least a thickness that is fixedly dispersed, resulting in an increase in the overall thickness of the color filter.

These patents expect to increase the light efficiency of a color filter using quantum dots and scattering particles, but adopt a multilayer structure, and since the average particle diameter of the scattering particles used is on the order of micrometer (μm), the effect is insufficient.

Patent literature

Patent Document 1: Korean Patent Publication No. 2010-0037283

Patent Document 2: Korean Patent Publication No. 2014-0109327

Summary of invention

For this reason, in order to easily form a fine pattern, ensure a high color reproduction rate, and light efficiency, the results of the multi-angle study have confirmed that the use of scattering particles of several hundred nanometers in a specific content does not affect the brightness, and can be solved. The above problems have further completed the present invention.

Accordingly, an object of the present invention is to provide a self-luminous photosensitive resin composition which can ensure excellent color reproduction characteristics and high light efficiency.

Further, another object of the present invention is to provide an image display device capable of realizing high-quality vivid image quality by having a color filter including the above-described self-luminous photosensitive resin composition.

In order to achieve the above object, the present invention is characterized in that the self-luminous photosensitive resin composition contains quantum dots, scattering particles, a photopolymerizable compound, a photopolymerization initiator, an alkali-soluble resin, and a solvent, and the scattering particles have an average particle diameter of 30~1000nm metal oxide.

In this case, the metal oxide is characterized by comprising Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, An oxide of a metal of the group consisting of Yb, Ti, Sb, Sn, Zr, Nb, Ce, Ta, In, and combinations thereof.

Further, the present invention is characterized by a color filter manufactured from the self-luminous photosensitive resin composition and an image display device including the color filter.

The self-luminous photosensitive resin composition of the present invention can eliminate the problem of a decrease in light efficiency of a color filter.

The fine pattern of the color filter using the above-described self-luminous photosensitive resin composition is excellent in formation, and the image display device incorporating the color filter described above can achieve high color brightness, ensure excellent color reproduction characteristics and high light efficiency, and can realize vivid color. The quality of the picture.

1‧‧‧Substrate

3‧‧‧Color filter

Fig. 1 is a schematic view showing the action of a color filter in an image display device.

detailed description

The present invention proposes a self-luminous photosensitive resin composition which can be used for a color filter of an image display device.

In particular, the present invention proposes a self-luminous photosensitive resin composition in which a quantum dot and a scattering particle are essential components in the composition of a color filter, and the quantum dot has hundreds of passes by automatically emitting light of a hue. The scattering particles of the nanometer average particle size increase the distance of the automatically emitted light, and the overall light efficiency of the color filter can be improved. Further, by manufacturing the pixels of the color filter from the above-described self-luminous photosensitive resin composition, the advantage that the fine pattern can be easily formed is ensured.

The self-luminous photosensitive resin composition of the present invention contains quantum dots and scattering particles, and a photopolymerizable compound, a photopolymerization initiator, an alkali-soluble resin, and a solvent.

Hereinafter, each component will be described.

Quantum dots are nano-sized semiconductor materials. An atom constitutes a molecule, and a molecule forms an aggregate of small molecules called a cluster to form a nanoparticle. However, when such a nanoparticle specifically exhibits a semiconductor property, it is called a quantum dot. The quantum dots receive energy from the outside to reach a floating state, and release energy based on their corresponding energy band gaps.

The quantum dots of the present invention are not particularly limited as long as they are photoexcitable by luminescence, and may be, for example, a Group II-IV semiconductor compound, a III-V semiconductor compound, an IV-VI semiconductor compound, a Group IV element or In the group consisting of the compounds and their combinations. They may be used alone or in combination of two or more.

The foregoing Group II-IV semiconductor compound may be selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and a mixture thereof; the selected two-element compound; CdSeS, CdSeTe, CdSTe, ZnSeS a three-element compound selected from the group consisting of ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HfZnSe, HgZnTe, and mixtures thereof; and CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS In the group consisting of four elements selected from the group consisting of CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and a mixture thereof, the aforementioned Group III-V semiconductor compound may be selected from GaN, GaP, GaAs, GaSb, AlN, AlP, a two-element compound selected from the group consisting of AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, a three-element compound selected from the group consisting of AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, In the group consisting of four elements selected from the group consisting of InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and a mixture thereof, the aforementioned IV-VI semiconductor compound may be selected from SnS, SnSe, SnTe, PbS, PbSe, PbTe, and a mixture of selected two-element compounds; a selected three-element compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; and SnPbSSe, SnPbSeTe, SnPbSTe, and In the group consisting of the selected four-element compounds in the group consisting of the mixture, the aforementioned group IV element or the compound containing the same may be selected from the group of elemental compounds selected from the group consisting of Si, Ge, and a mixture thereof; and SiC, SiGe, and The two-element compounds selected from the group consisting of their mixtures.

Further, the aforementioned quantum dots may be a homogeneous single structure; a double structure such as a core-shell, a gradient structure; or a mixed structure thereof.

In the dual structure of the foregoing core shell, the substances constituting the core and the shell, respectively, may be composed of the semiconductor compounds different from each other mentioned above. For example, the aforementioned core may include one or more substances selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, HgInZnS, and ZnO, but is not limited thereto. The foregoing shell may include one selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe The substance above, but not limited to this.

The colored photosensitive resin composition used in the production of a general color filter includes a coloring agent such as red, green, and blue in order to realize a hue. Similarly, the quantum dot of the present invention is also divided into a quantum dot showing red color and a quantum emitting green color. Point and display of blue quantum dots, the quantum dots of the present invention may be one selected from the aforementioned red, green, blue, and combinations thereof.

The aforementioned quantum dots can be synthesized by a wet chemical process, an organometallic chemical deposition process, or a molecular beam epitaxy process.

The wet chemical process described above is a method in which a precursor substance is placed in an organic solvent to grow particles. When the crystal grows, the organic solvent is naturally disposed on the surface of the quantum dot crystal to act as a dispersant to adjust the crystal growth, and the vapor deposition method such as the above-described metalorganic chemical deposition (MOCVD) or molecular beam epitaxy (MBE) may be used. A simple and inexpensive process controls the growth of nanoparticles.

The content of the quantum dot of the present invention is not particularly limited, and may be, for example, 3 to 80% by weight, preferably 5 to 70% by weight, based on 100% by weight of the self-luminous photosensitive resin composition. At this time, if the content is less than 3% by weight, the luminous efficiency is only a little bit, and if it exceeds 80% by weight, the content of the other components is relatively insufficient, and there is a problem that it is difficult to form a pixel pattern.

The scattering particles that together with the aforementioned quantum dots constituting the features of the present invention are used to increase the light efficiency of the color filter. The light irradiated by the light source enters the color filter at a critical angle, but at this time, the incident light, the automatically emitted light automatically emitted by the quantum dot and the scattering particle meet while enhancing the light by increasing the optical path. Efficiency, resulting in increased light efficiency of the color filter.

The aforementioned scattering particles may be all common inorganic materials, and metal oxides are preferably used.

The metal oxide may be selected from the group consisting of Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr. , Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Ti, Sb, Sn An oxide of a metal of the group consisting of Zr, Nb, Ce, Ta, In, and combinations thereof.

Specifically, it may be selected from the group consisting of Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ITO, IZO, ATO, ZnO-Al, Nb ₂ O ₃ One of the group consisting of SnO, MgO, and a combination thereof. When necessary, a material which is surface-treated with a compound having an unsaturated bond such as acrylate may also be used.

The scattering particles define an average particle diameter and a content in the entire composition in order to sufficiently increase the luminous intensity of the color filter.

Preferably, the scattering particles may have an average particle diameter of 10 to 1000 nm, and preferably use scattering particles in the range of 50 to 500 nm. In this case, if the particle diameter is too small, the light emitted from the quantum dots cannot be expected to have a sufficient scattering effect. On the other hand, if it is too large, the surface of the self-luminous layer having a uniform quality cannot be obtained by precipitation in the composition, and thus the adjustment is appropriately performed. Used within the foregoing range.

Further, in 100% by weight of the self-luminous photosensitive resin composition, 0.1 to 50% by weight, preferably 0.5 to 30% by weight, can be used. Assuming that the content of the scattering particles is less than the above range, the desired luminescence intensity cannot be ensured. On the other hand, if it exceeds the above range, the effect of increasing the luminous intensity based on the above is not obtained, and since the problem of the stability of the composition is lowered, it is suitably used within the above range.

The photopolymerizable compound contained in the self-luminous photosensitive resin composition of the present invention is a compound polymerizable by light or a photopolymerization initiator to be described later, and examples thereof include monofunctional monomers, difunctional monomers, and other polyfunctional compounds. Monomers, etc.

Specific examples of the monofunctional monomer include mercaptophenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, and acrylic acid-2. - hydroxyethyl ester, N-vinyl pyrrolidone, and the like. Specific examples of the above difunctional monomer include 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, and three Ethylene glycol di(meth)acrylate, bisphenol A (propylene oxyethyl ether), 3-methyl-pentanediol di(meth) acrylate, propylene glycol dimethacrylate, polyurethane (A) Base) acrylate and the like.

Specific examples of other polyfunctional monomers include trimethylolpropane tri(meth)acrylate, ethoxylated trimethylolpropane tri(meth)acrylate, and propoxylated trishydroxyl. Propane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, ethoxylated dipentaerythritol hexa(methyl) Acrylate, propoxylated dipentaerythritol hexa(meth) acrylate, dipentaerythritol hexa(meth) acrylate, dipentaerythritol (poly) acrylate having a hydroxyl group or a carboxylic acid group as shown in the following Chemical Formulas 1 and 2 Ester and the like.

(In the above Chemical Formula 1, R ₁ is an acrylate group or a methacrylate group, and R ₂ is hydrogen, an acryloyl group or a methacryl group.)

(In the above Chemical Formula 2, R ₃ to R ₅ are the same or different from each other, and are independently an alkyl group having 1 to 4 carbon atoms, an acrylate group, a methacrylate group or -OR ₇ . In this case, R ₃ to R ₅ At least one of them is an acrylate or methacrylate group, and R ₇ is . R ₆ is -C(=O)CH ₂ CH ₂ C(=O)OH. R ₈ and R ₉ are acrylate or methacrylate groups, and R ₁₀ is hydrogen, propylene fluorenyl, methacryl fluorenyl or -C(=O)CH ₂ CH ₂ C(=O)OH. )

Among the photopolymerizable compounds of the present invention, a difunctional or higher polyfunctional monomer can be used, and a pentafunctional photopolymerizable compound containing a carboxylic acid group is more preferably used.

When a pentafunctional or higher photopolymerizable compound is used, it is more excellent in formation of a pixel pattern. In particular, in the case of a pentafunctional photopolymerizable compound containing a carboxylic acid group, the luminescent property of aggregation by quantum dot particles is not lowered, and a pixel pattern excellent in photoreactivity and excellent in luminescence can be formed.

The content of the photopolymerizable compound is usually from 5 to 70% by mass, and preferably from 10 to 60% by mass, based on 100% by weight of the self-luminous photosensitive resin composition. In this case, when the photopolymerizable compound is used in the above range, it is preferable that the light source is easily formed into a pixel pattern. When the content is less than 5% by mass, the degree of photocuring by light is lowered to make it difficult to form a pixel pattern, and if it exceeds 70% by mass, there is a problem that pattern peeling occurs.

The photopolymerization initiator is not particularly limited as long as it is a compound which initiates polymerization of the photopolymerizable compound, and may be a group consisting of a triazine compound, an acetophenone compound, a biimidazole compound, an anthraquinone compound, and a combination thereof. A compound of choice.

The self-luminous photosensitive resin composition containing the photopolymerization initiator has high sensitivity, and the pixel portion of the color filter formed using the composition has good pixel portion strength and pattern properties.

The triazine compound may, for example, be 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine or 2,4-bis(trichloromethane). 6-(4-methoxynaphthyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-piperidin-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-(4-methoxystyryl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2 -(5-methylfuran-2-yl)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(furan-2-yl)ethylene Base]-1,3,5-triazine, 2,4-double (three Chloromethyl)-6-[2-(4-diethylamino-2-methylphenyl)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)- 6-[2-(3,4-Dimethoxyphenyl)vinyl]-1,3,5-triazine, and the like.

Examples of the acetophenone compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzoin dimethyl ketal, and 2-hydroxy-1. -[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-(4-methylthiophenyl) -2-morpholinylpropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2-methyl 1-[4-(1-methylvinyl)phenyl]propan-1-one, 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-? Olostinophenyl)butan-1-one and the like. Further, a compound represented by the following Chemical Formula 3 can be given.

(In the above Chemical Formula 3, R ₁ to R ₄ each independently represent hydrogen, a halogen, a hydroxyl group, a substituted or unsubstituted phenyl group having 1 to 12 carbon atoms, or an alkyl group having 1 to 12 carbon atoms; a substituted benzyl group, or a naphthyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms.)

Specific examples of the compound represented by the above Chemical Formula 3 include 2-methyl-2-amino(4-morpholinophenyl)ethane-1-one and 2-ethyl-2-amino (4-morpholino). Phenyl)ethane-1-one, 2-propyl-2-amino(4-morpholinophenyl)ethane-1-one, 2-butyl-2-amino (4-morpholinophenyl) Ethyl-1-one, 2-methyl-2-amino(4-morpholinophenyl)propan-1-one, 2-methyl-2-amino-(4-morpholinophenyl) Alkan-1-one, 2-ethyl-2-amino(4-morpholinophenyl)propan-1-one, 2-ethyl-2- Amino (4-morpholinophenyl)butan-1-one, 2-methyl-2-methylamino-(4-morpholinophenyl)propan-1-one, 2-methyl-2- Dimethylamino-(4-morpholinophenyl)propan-1-one, 2-methyl-2-diethylamino(4-morpholinylphenyl)propan-1-one, and the like.

The biimidazole compound may, for example, be 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3) -dichlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetrakis Oxyphenyl)biimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetrakis(trialkoxyphenyl)biimidazole, 4,4',5 An imidazole compound obtained by substituting a phenyl group at the 5' position with an alkoxycarbonyl group. Among these, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichlorobenzene) is preferably used. Base 4,4',5,5'-tetraphenylbiimidazole.

The above hydrazine compound is represented by the following Chemical Formulas 4 to 6.

In addition to this, if the effect of the present invention is not impaired, a photopolymerization initiator which is usually used can be additionally used. Examples thereof include a benzoin compound, a benzophenone compound, a thioxanthone compound, an anthraquinone compound, and another photopolymerization initiator. They 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 benzophenone compound include benzophenone, o-benzimidyl benzoate, 4-phenylbenzophenone, and 4-benzylidene-4'-methyldiphenyl sulfide. , 3,3',4,4'-tetrakis(tert-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, 4,4'-di(N,N' -Dimethylamino)benzophenone and the like.

Examples of the thioxanthone compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1-chloro-4-propoxythioxanthene. Ketones, etc.

The terpenoid compound may, for example, be 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene or 2-ethyl-9,10. - Diethoxy hydrazine and the like.

Further, 2,4,6-trimethylbenzimidyldiphenylphosphine oxide can be exemplified, 10-butyl-2-chloroacridone, 2-ethylhydrazine, benzyl, 9,10-phenanthrenequinone, camphorquinone, methyl phenylacetate, titanocene compound, and the like are used as other photopolymerization initiators.

In addition, when the photopolymerization initiator is used in combination with the photopolymerization initiator, the sensitivity of the self-luminous photosensitive resin composition containing these is further improved, and the productivity in forming a color filter is improved, which is preferable.

As the photopolymerization initiating adjuvant which can be used, a compound selected from the group consisting of an amine compound, a carboxylic acid compound, and a combination thereof can be preferably used.

Specific examples of the amine compound include an aliphatic amine compound such as triethanolamine, methyldiethanolamine or triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, and 4 -isoamyl dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N,N-dimethyl-p-toluidine, 4, 4 '- bis (dimethylamino) benzophenone (known as: Michler's ketone), 4,4' - bis (diethylamino) benzophenone aromatic amine compound. As the amine compound, an aromatic amine compound can be preferably used.

Specific examples of the carboxylic acid compound include phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, and methoxybenzenesulfide. Acetic acid, dimethoxyphenylthioacetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, naphthoxyacetic acid, etc. Aromatic heteroacetic acids.

The content of the photopolymerization initiator is 0.1 to 20% by weight, preferably 0.5 to 15% by weight, based on 100% by weight of the total composition, and the content of the photopolymerization initiation aid is usually 100 parts by weight based on the photopolymerization initiator. 1 to 200 parts by weight, preferably 10 to 100 parts by weight.

When the content of the photopolymerization initiator is within the above range, the self-luminous photosensitive resin composition is highly sensitive, and the strength of the pixel portion and the smoothness of the surface of the pixel portion tend to be good, which is preferable. In addition, when the content of the photopolymerization-initiating auxiliary agent is in the above range, the sensitivity efficiency of the self-luminous photosensitive resin composition is further increased, and the productivity of the color filter formed using the composition tends to be improved, which is preferable.

The alkali-soluble resin is reactive with light or heat and has alkali solubility, and can be used arbitrarily as long as it is a binder resin which can be dissolved in an alkali developer used in a development stage for producing a color filter.

Preferably, the alkali-soluble resin is an alkali-soluble resin having an acid value of 20 to 200 (KOH mg/g). The acid value refers to a value measured as the amount of potassium hydroxide (mg) required for neutralizing 1 g of the acrylic resin-based polymer, and is related to solubility. When the acid value of the resin is within the above range, the solubility in the developer is improved, the non-exposed portion is easily dissolved, and the sensitivity is increased. As a result, there is an advantage that the film remaining ratio remaining during pattern development of the exposed portion is improved.

Further, the aforementioned alkali-soluble resin can be considered to have a defined molecular weight and molecular weight distribution (Mw/Mn) in order to increase the surface hardness for the color filter. Preferably, an alkali-soluble resin having a weight average molecular weight of 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da, and a molecular weight distribution of 1.5 to 6.0, preferably 1.8 to 4.0, is directly polymerized or purchased. The alkali-soluble resin having a molecular weight and a molecular weight distribution in the above range is not only improved in hardness as described above, but also has a high residual film ratio, and is excellent in solubility in a non-exposed portion in a developer, and can improve the resolution.

The alkali-soluble resin comprises a copolymer of a polymer containing a carboxyl group-containing unsaturated monomer, a monomer having an unsaturated bond copolymerizable with the monomer, and The combination consists of one of the selected groups.

In this case, the carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, an unsaturated tricarboxylic acid or the like. Specifically, examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, and cinnamic acid. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, and citraconic anhydride. Further, the unsaturated polycarboxylic acid may be a mono(2-methylpropenyloxyalkyl)ester, and examples thereof include succinic acid mono(2-propenyloxyethyl) ester and succinic acid mono(2). -Methyl propylene methoxyethyl) ester, mono(2-propenyl methoxyethyl) phthalate, mono(2-methylpropenyloxy) phthalate, and the like. The unsaturated polycarboxylic acid may be a mono (meth) acrylate having a dicarboxy polymer at both ends, and examples thereof include ω-carboxy polycaprolactone monoacrylate and ω-carboxy polycaprolactone monomethacrylate. Ester and the like. These carboxyl group-containing monomers can be used alone or in combination of two or more.

Further, the monomer copolymerizable with the carboxyl group-containing unsaturated 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 vinyl carboxylate compound, an unsaturated ether compound, a vinyl cyanide compound, an unsaturated quinone imine compound, an aliphatic conjugated diene compound, or a terminal end of the molecular chain having a monopropenyl fluorenyl group or a monomethyl propylene oxime A selected one of the group consisting of a large monomer, a megamonomer, and a combination thereof.

More specifically, as the aforementioned copolymerizable monomer, styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, vinyl vinyl can be used. Benzene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinyl benzyl Methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether, an aromatic vinyl compound such as hydrazine; methyl acrylate, methyl methacrylate, Ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate , isobutyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, methacrylic acid-2- Hydroxybutyl ester, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, Oleic acid 4-hydroxybutyl ester, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, methacrylic acid ring Hexyl ester, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, methacrylic acid-2 -phenoxyethyl ester, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylate , methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, dicyclopentadienyl methacrylate, (methyl )adamantyl acrylate, norbornene (meth)acrylate, 2-hydroxy-3-acrylate Non-saturated carboxylic acid esters such as phenoxypropyl ester, 2-hydroxy-3-phenoxypropyl methacrylate, glyceryl monoacrylate, glyceryl monomethacrylate; 2-aminoethyl acrylate, A 2-Aminoethyl acrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate , 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethyl acrylate Aminoalkyl esters of unsaturated carboxylic acids such as aminopropyl ester and 3-dimethylaminopropyl methacrylate; glycidyl esters of unsaturated carboxylic acid such as glycidyl acrylate or glycidyl methacrylate; vinyl acetate Vinyl esters of esters, vinyl propionate, vinyl butyrate, vinyl benzoate, etc.; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether, allyl glycidyl ether; acrylonitrile , cyanide vinyl compounds such as methacrylonitrile, α-chloroacrylonitrile, and divinyl cyanoethylene; acrylamide, methacrylamide Unsaturated guanamines such as α-chloropropenylamine, N-2-hydroxyethyl acrylamide, N-2-hydroxyethyl methacrylamide; maleic imine, N-phenyl Malay Unsaturated quinone imines such as quinone imine, N-cyclohexylmaleimide; aliphatic conjugated dienes such as 1,3-butadiene, isoprene, chloroprene, etc.; The polymer molecular chain of styrene, polymethyl acrylate, polymethyl methacrylate, polybutyl acrylate, n-butyl methacrylate, polyoxyalkylene has a monopropenyl fluorenyl group or a monomethyl propylene end. A large monomer of a decyloxy group; a monomer having a dielectric constant, a monomer having a norbornene skeleton, a monomer having an adamantane skeleton, and a monomer having a resin skeleton.

The content of the alkali-soluble resin is 100% by weight of the total composition. 5 to 80% by weight, preferably 10 to 70% by weight, and when the content of the alkali-soluble resin is in the range of 5 to 80% by weight, the solubility in the developer is sufficient, and the pattern is easily formed, and the pixel portion of the exposed portion during development is prevented. The film is reduced, and the peeling property of the non-pixel portion becomes good.

The solvent can be used arbitrarily as long as it dissolves or disperses the above components, and is not particularly limited in the present invention. Representative examples thereof include alkylene glycol monoalkyl ethers, alkylene glycol alkyl ether acetates, aromatic hydrocarbons, ketones, lower and higher alcohols, and cyclic esters. More specifically, the solvent may, for example, be an ethylene glycol monoalkyl ether such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether or ethylene glycol monobutyl ether; diethylene glycol; Diethylene glycol dialkyl ethers such as dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; methyl cellosolve acetate, ethyl cellosolve Alkylene glycol alkyl ethers such as acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, butyl methoxyacetate and amyl methoxyacetate Acetate; aromatic hydrocarbons such as benzene, toluene, xylene, and trimethylbenzene; ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; ethanol and propylene Alcohols such as alcohol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerin, etc.; esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; γ-butane A cyclic ester such as an ester.

The solvent is preferably an organic solvent having a boiling point of 100 ° C to 200 ° C from the viewpoint of coatability and drying property, and more preferably an alkylene glycol alkyl ether acetate, a ketone or a 3-ethoxy group. Further, esters such as ethyl propionate and methyl 3-methoxypropionate are preferable, and propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, and 3-ethyl are more preferable. Ethyl oxypropionate, Methyl 3-methoxypropionate and the like. These solvents can be used individually or in mixture of 2 or more types.

This solvent can be used as the remainder to satisfy 100% by weight of the total composition. This content is a range selected in consideration of the dispersion stability of the component and the process easiness (coatability) in the production process.

The self-luminous photosensitive resin composition of the present invention can be produced by a wet coating method. In this case, as a wet coating method, a roll coater, a spin coater, a slit spin coater, or a slit coater can be used. (also referred to as a slot coater), a coating device such as an inkjet type.

The present invention provides a color filter manufactured using the above self-luminous photosensitive resin composition.

When the color filter of the present invention is applied to an image display device, since light emitted by the light source is self-luminous, the optical path is increased by the scattering particles, so that more excellent light efficiency can be achieved. Further, since it is light emitted from light having a hue, color reproducibility is more excellent, and since light is emitted in all directions by photoluminescence, the viewing angle can be improved.

In particular, instead of forming a layer containing scattering particles separately for the color filter, a layer is formed by simultaneously containing quantum dots and scattering particles in one layer, so that not only the process is simplified, but also the color filter can be realized. Thin film.

The aforementioned color filter includes a substrate and a pattern layer formed on an upper portion of the substrate.

The substrate is not particularly limited as long as it is a substrate of a color filter itself or a substrate such as a display device located at a portion of the color filter. E.g, A glass, tantalum, niobium oxide (SiOx) or polymer substrate can be used. Specifically, the polymer substrate may be polyether oxime (PES), polycarbonate (PC) or the like.

The pattern layer is a layer containing the self-luminous photosensitive resin composition of the present invention, and may be a layer formed by applying the above-described self-luminous photosensitive resin composition, exposing it to a predetermined pattern, developing it, and thermally curing it.

According to an embodiment of the present invention, the pattern layer formed using the above self-luminous photosensitive resin composition may include a red pattern layer containing red quantum dots, a green pattern layer containing green quantum dots, and a blue pattern containing blue quantum dots. Floor. When the light is irradiated, the red pattern layer emits red light, the green pattern layer emits green light, and the blue pattern layer emits blue light.

In this case, when applied to an image display device, light emitted from a light source is not particularly limited, but a light source that emits blue light can be used in terms of more excellent color reproducibility.

According to other embodiments of the present invention, the foregoing pattern layer may include only a pattern layer of two of the red pattern layer, the green pattern layer, and the blue pattern layer. At this time, the aforementioned pattern layer further includes a transparent pattern layer containing no quantum dots.

In the case of a pattern layer including only two hue, a light source that emits light of a wavelength indicating the remaining hue that does not exist can be used. For example, when a red pattern layer and a green pattern layer are included, a blue light source can be used. At this time, the red quantum dots emit red light, the green quantum dots emit green light, and the transparent pattern layer directly transmits blue light to display blue light.

The foregoing color filter including the substrate and the pattern layer may further include a partition wall formed between the respective patterns, and may further include a black matrix. In addition, A protective film formed on an upper portion of the pattern layer of the color filter may be further included.

Further, the present invention provides an image display device including the aforementioned color filter.

The image display device described above is not only an ordinary liquid crystal display device but also various image display devices such as an electroluminescence display device, a plasma display device, and a field emission display device.

The image display device of the present invention is excellent in light efficiency, exhibits high luminance, is excellent in color reproducibility, and has a wide viewing angle.

The preferred embodiments are provided below for the purpose of understanding the invention, but are not intended to limit the scope of the appended claims, and the scope of the invention A variety of modifications and variations of the embodiments are possible within the scope of the invention, and such modifications and modifications are of course within the scope of the appended claims.

Production Example 1: Synthesis of Green Quantum Dots A-1 of CdSe (Nuclear)/ZnS (Shell) Structure

CdO (0.4 mmol), zinc acetate (4 mmol), oleic acid (5.5 mL) and 1-octadecene (20 mL) were placed in a reactor, and the reaction was carried out by heating at 150 °C. Thereafter, in order to remove the acetic acid formed by substituting zinc with oleic acid, the above reactant was allowed to stand under a vacuum of 100 mTorr for 20 minutes.

Thereafter, after heating to 310 ° C to obtain a transparent mixture, after maintaining at 310 ° C for 20 minutes, 0.4 mmol of Se powder and 2.3 mmol of S powder were dissolved in 3 mL of trioctylphosphine Se and The S solution was quickly injected into a reactor which had been placed in a solution of Cd(OA) ₂ (Cadmium oleate) and Zn(OA) ₂ (Zinc oleate). After the thus obtained mixture was grown at 310 ° C for 5 minutes, growth was stopped with an ice bath.

Thereafter, the precipitate was precipitated with ethanol, and the quantum dots were separated by a centrifugal separator. The excess impurities were washed with chloroform and ethanol, and stabilized with oleic acid to obtain a CdSe (nucleus) of particle distribution having a core particle diameter and a shell thickness of 3 to 5 nm in total. Quantum dot A-1 of ZnS (shell) structure.

Production Example 2: Synthesis of alkali-soluble resin

A flask having a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen introduction tube was prepared, and on the other hand, 45 parts by weight of N-benzyl maleimide, 45 parts by weight of methacrylic acid, and 10 parts by weight were added. Stirring and mixing of tricyclodecyl methacrylate, 4 parts by weight of t-butyl peroxy-2-ethylhexanoate, and 40 parts by weight of propylene glycol monomethyl ether acetate (hereinafter referred to as "PGMEA") While a monomer dropping funnel was prepared, 6 parts by weight of n-dodecyl glycol and 24 parts by weight of PGMEA were added and stirred to prepare a chain transfer agent dropping funnel.

Thereafter, 395 parts by weight of PGMEA was introduced into the flask, and the atmosphere in the flask was changed from air to nitrogen, and then the temperature of the flask was raised to 90 ° C while stirring.

Next, the monomer and the chain transfer agent were dropped from the dropping funnel. The dropping was maintained at 90 ° C for 2 hours, and after 1 hour, the temperature was raised to 110 ° C for 3 hours, and then introduced into a gas introduction tube to start foaming of a mixed gas of oxygen/nitrogen = 5/95 (v/v).

Next, 10 parts by weight of glycidyl methacrylate, 0.4 parts by weight of 2,2'-methylenebis(4-methyl-6-tert-butylphenol), and 0.8 parts by weight of triethyl were added to the flask. The amine was further reacted at 110 ° C for 8 hours, and then cooled to room temperature to obtain a solid content of 29.1% by weight and a weight average molecular weight of 32,000. An alkali-soluble resin having an acid value of 114 mgKOH/g.

Examples 1 to 16 and Comparative Examples 1 to 6: Fabrication of a single-layer color filter

Each of the components was mixed with propylene glycol monomethyl ether acetate to a total solid content of 20% by weight, and the mixture was sufficiently stirred to obtain a self-luminous photosensitive resin composition, as described in the following Tables 1 to 4. Table 1 shows the kinds of scattering particles used in the examples and comparative examples. Further, Table 2 shows the composition of an example using scattering particles TiO ₂ , and Table 3 shows the composition of an example in which the content of Al ₂ O ₃ and the content of TiO ₂ are different. On this basis, Table 4 shows the composition used in the comparative example.

A color filter was produced using the self-luminous photosensitive resin compositions produced in the above Examples 1 to 16 and Comparative Examples 1 to 6. Specifically, the respective light-emitting photosensitive resin compositions were applied onto a glass substrate by a spin coating method, and then placed on a hot plate and held at a temperature of 100 ° C for 3 minutes to form a film.

Next, a test photomask having a light transmission pattern of a length × width of 20 mm × 20 mm and a line width/space pattern of 1 μm to 100 μm was placed on the film, and the interval between the test photomask and the test photomask was set to 100 μm. Ultraviolet light.

At this time, the ultraviolet light source was irradiated with an ultrahigh pressure mercury lamp (trade name: USH-250D) manufactured by USHIO Electric Co., Ltd. under an air atmosphere using an exposure amount (365 nm) of 200 mJ/cm ² without using a special filter.

The ultraviolet-irradiated film was immersed in a developing solution of KOH aqueous solution having a pH of 10.5 for 80 seconds and developed. Distilling the film-covered glass plate with distillation After washing with water, nitrogen gas was sprayed and dried, and heated in a heating furnace at 150 ° C for 10 minutes to produce a color filter. The film thickness of the manufactured self-luminous color filter was 5.0 μm.

Comparative Example 7: Fabrication of a multilayer color filter

In the composition of the foregoing embodiment 1, a first composition containing 35% by weight of the scattering particles E-1 and no sub-points was produced, and a second composition containing only the quantum dots A-1 and no scattering particles.

The method of manufacturing the color filter was the same as described above, but in Comparative Example 7, the first composition and the second composition were laminated in this order on the substrate.

Experimental Example 1: Determination of Fine Pattern

In the color filter manufactured using the self-luminous photosensitive resin compositions manufactured in the above Examples 1 to 16 and Comparative Examples 1 to 6, the line width designed to be 100 μm was measured by OM equipment (manufactured by ECLIPSE LV100POL Nikon Co., Ltd.). The size of the pattern obtained by the spacer pattern mask.

If the difference between the design value of the line width/space pattern mask and the measured value of the resulting fine pattern is 20 μm or more, it is difficult to realize a fine pixel, and if it has a negative value, the side means a critical value causing a process failure. Referring to Table 5, it was confirmed that there is no problem in the fine pattern formed by using the quantum dots and the scattering particles simultaneously by the present invention.

Experimental Example 2: Measurement of luminous intensity

The color filter manufactured by using the self-luminous photosensitive resin composition manufactured in the above Examples 1 to 16 and Comparative Examples 1 to 6 was passed through a 365 nm Tube type 4W UV irradiator (VL-4LC, VILBER LOURMAT) to 20 mm. The portion formed by the pattern of ×20 mm square was used to measure the area of light conversion, and the spectrometer (Ocean Optics) was used to measure Examples 1 to 12 and Comparative Examples 1 to 3 in the 520 nm region and Examples 13 to 16 and Comparative Example 4 in the 640 nm. Luminous intensity in the area.

The higher the measured luminous intensity, the higher the light efficiency. Therefore, in the observation table 6, it was confirmed that the luminous intensity was improved in the cases of Examples 1 to 16 as compared with Comparative Examples 3 and 4 in which quantum dots and scattering particles were not used. In addition, In the case of Comparative Example 7 having a laminated structure, the light source was absorbed by the layer containing only the scattering particles, and the intensity of the light source reaching the self-luminous layer was lowered, whereby the decrease in light efficiency was confirmed.

Experimental Example 3: Evaluation of sedimentation stability

50 ml of the self-luminous photosensitive resin composition produced by the foregoing Examples and Comparative Examples was placed in a measuring cylinder of 100 ml, and the phase separation phenomenon of the upper layer portion due to sedimentation of the scatterer was visually observed.

The evaluation was confirmed at 6, 18, 36, 72, and 100 hours, and the time at which each sample was confirmed to be separated by 5 ml or more was measured.

Generally, the sedimentation of the scatterer is a natural phenomenon, but if the phase separation is caused in the color filter manufacturing process, there is a problem in the stability of the coating. Therefore, when it is confirmed that the time of phase separation of the sample is 6 hours or more, it can be judged that there is no problem in the stability of the composition.

With reference to the above Table 7, all of Examples 1 to 16 exhibited sedimentation stability of 6 hours or more, and thus it was confirmed that there was no problem in the stability of the composition.

Industrial applicability

The self-luminous photosensitive resin composition of the present invention can achieve high-quality vivid image quality by maintaining excellent color reproducibility and brightness by introducing a color filter of an image display device.

1‧‧‧Substrate

3‧‧‧Color filter

Claims (9)

A self-luminous photosensitive resin composition comprising quantum dots, scattering particles, a photopolymerizable compound, a photopolymerization initiator, an alkali-soluble resin, and a solvent, wherein the scattering particles are metals having an average particle diameter of 30 to 1000 nm Oxide. The self-luminous photosensitive resin composition according to claim 1, wherein the metal oxide is selected from the group consisting of Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, An oxide of one or more metals in the group consisting of Gd, Tb, Dy, Ho, Er, Tm, Yb, Ti, Sb, Sn, Zr, Nb, Ce, Ta, and In. The self-luminous photosensitive resin composition according to claim 1, wherein the metal oxide comprises one selected from the group consisting of Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , and Ta ₂ O _{5 .} One or more of the group consisting of Ti ₃ O ₅ , ITO, IZO, ATO, ZnO-Al, Nb ₂ O ₃ , SnO, and MgO. The self-luminous photosensitive resin composition according to claim 1, wherein the quantum dot comprises a compound selected from the group consisting of a Group II-IV semiconductor compound, a III-V semiconductor compound, a Group IV-VI semiconductor compound, and a Group IV element. Or one or more of the group consisting of compounds containing the group IV element. The self-luminous photosensitive resin composition according to claim 1, wherein the scattering particles are metal oxides having an average particle diameter of 100 to 500 nm. The self-luminous photosensitive resin composition according to claim 1, which comprises: 3 to 80% by weight of quantum dots; 0.1 to 50% by weight of scattering particles in a manner to satisfy 100% by weight of the total composition 5 to 70% by weight of a photopolymerizable compound; 0.1 to 20% by weight of a photopolymerization initiator; 5 to 80% by weight of an alkali-soluble resin; and the remaining solvent. The self-luminous photosensitive resin composition according to claim 6, wherein the content of the scattering particles is from 0.5 to 30% by weight. A color filter manufactured by using the self-luminous photosensitive resin composition according to any one of claims 1 to 7. An image display device characterized in that the image display device includes the color filter described in claim 8.