JP6320975B2 - Self-luminous photosensitive resin composition and display device including color conversion layer produced thereby - Google Patents

Description

  The present invention relates to a self-luminous photosensitive resin composition that can achieve high quality image quality while ensuring excellent color conversion characteristics and high fluorescence efficiency, and a display device (Self emission) including a color conversion layer manufactured thereby. type photoresistive resin composition, display device compiling color conversion layered thereby).

  The display industry has undergone a dramatic change from a CRT (cathode-ray tube) to a PDP (plasma display panel), OLED (organic light-emitting diode), LCD (liquid-crystal display), etc. . Among them, the LCD is widely used as an image display device used in all industries, and its application range is continuously expanded.

  The LCD adjusts the transmittance while white light generated from the backlight unit passes through the liquid crystal cell, and the three primary colors that pass through the red, green, and blue color filters are mixed. To achieve full color.

  As a light source of the backlight unit, CCFL (Cold Cathode Fluorescent Lamp) is used. However, in this case, since power must always be applied to the CCFL of the backlight unit, there is a problem that power consumption is consumed. In addition, it has been pointed out that the color reproducibility of about 70% of the conventional CRT and environmental pollution problems due to the addition of mercury are disadvantageous.

  Recently, as an alternative for solving the above problems, research on a backlight unit using an LED (Light Emitting Diode) has been actively conducted. When the LED is used as a backlight unit, it exceeds the 100% specification of the color reproduction range of NTSC (National Television System Committee), and a clearer image quality can be provided to consumers.

  Therefore, in the same industry, in order to improve the efficiency of the backlight light source, a method has been proposed through changes in materials and structures of color filters and LCD panels.

  The color filter forms a pixel of each color through a patterning process after applying a dispersion composition including a pigment or a dye. However, the pigment and the dye cause a problem of reducing the transmission efficiency of the backlight light source. The decrease in the transmission efficiency results in a decrease in color reproducibility of the display device, which makes it difficult to realize a high quality screen.

  The problem of low color reproducibility can be solved through the increase in light efficiency of the color filter, and the color conversion layer (or light conversion layer) can be increased by increasing the thickness of the color filter, or stacked or close to it. Have been proposed.

  FIG. 1 is a schematic diagram showing the role of the color conversion layer in the display device. As shown in FIG. 1, the light source generated from the backlight 1 directly improves the light efficiency via the color conversion layer 3 and the color filter 5. Can be increased.

  Conventionally, dyes and pigments are used as the composition of the color conversion layer. With such dyes and pigments alone, improvement in light efficiency cannot be expected, which causes a problem of lowering brightness. Therefore, it has been proposed to use a fluorescent material as the material of the color conversion layer 3.

  The fluorescent material is excited by blue light emitted from the backlight 1 and emits white light such as white light emitting red light or white light emitting green light by changing the wavelength of the blue light and emitting light in the front direction. To improve the light efficiency.

  Many patents relating to a color conversion layer having a fluorescent material have been filed, and among them, Korean Patent Publication No. 2012-0048218 is arranged between a backlight unit and a substrate, or arranged on an upper part of a shutter. Discloses a display device having a light conversion unit having at least one fluorescent material that converts incident light of a blue or ultraviolet wavelength band into light of a predetermined wavelength band.

  Korean Patent Publication No. 2013-0083807 proposes a liquid crystal display device having a backlight unit capable of improving the light efficiency. At this time, in order to improve the light efficiency, a phosphor, a quantum dot (Quantum Dot) and Presents the introduction of white scattering objects and color conversion materials such as electroluminescence materials and photoluminescence materials.

  Japanese Unexamined Patent Publication No. 2013-077785 presents a method of introducing a color conversion layer made of a green light emitting phosphor in order to improve the luminance of a white light emitting diode (LED).

  These patents attempt to improve the quality of the display device through the introduction of a color conversion layer containing a phosphor and the like, and at this time, do not directly refer to the method of forming the color conversion layer, or mention it as a solvent. A method of wet coating after simple dispersion is presented.

  As shown in FIG. 1, the color conversion layer can be formed as a pattern corresponding to each of the red (R) and green (G) pixel portions of the color filter. Since a phosphor having a size is not dissolved in a solvent and is in a dispersed state, it is difficult to realize a fine pattern, and physical properties such as thickness cannot be easily adjusted.

  In addition, the phosphor is used at a high content in order to ensure high light efficiency. However, at this time, there arises a problem that the stability of the dispersion is lowered or the physical properties of the color conversion layer film are lowered.

Korean Patent Publication No. 2012-0048218 Korean Patent Publication No. 2013-0083807 Japanese Unexamined Patent Publication No. 2013-077785

  Therefore, as a result of diversified research to easily form a fine pattern and ensure high light efficiency, the present applicant has no influence on luminance when using a fluorescent dye and a high refractive material in a specific content, The present invention was completed after confirming that the problems could be solved.

  Accordingly, an object of the present invention is to provide a self-luminous photosensitive resin composition capable of ensuring excellent color conversion characteristics and high fluorescence efficiency.

  Another object of the present invention is to provide a display device having a color conversion layer containing the self-luminous photosensitive resin composition and capable of realizing high quality and sharp image quality.

  In order to achieve the above object, the present invention includes a fluorescent dye, a highly refractive material, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent as a composition for forming a color conversion layer. Features.

  In addition, the present invention is characterized by a display device including a color conversion layer manufactured by the self-luminous photosensitive resin composition.

  The self-light-emitting photosensitive resin composition according to the present invention can solve the problem of a decrease in light efficiency due to a color filter.

  A display device incorporating a color conversion layer manufactured by the self-light-emitting photosensitive resin composition maintains high brightness, ensures excellent color conversion characteristics and high light efficiency, and realizes high-quality sharp image quality. be able to.

It is a schematic diagram which shows the role of the color conversion layer in a display apparatus.

  The present invention provides a self-luminous photosensitive resin composition that can be used in a color conversion layer of a display device.

  The color conversion layer is located adjacent to the color filter (see FIG. 1) in order to improve the reduced light efficiency caused by the use of the color filter (see FIG. 1), and the red (R) and green (G) of the color filter. It consists of a fine pattern so as to correspond to the pattern, and at this time, the fine pattern is formed using a photosensitive resin composition.

  In particular, in the present invention, a photosensitive resin composition including a fluorescent dye and a high refractive material as essential components is presented as the composition of the color conversion layer, and the fluorescence efficiency due to spontaneous emission of the fluorescent dye improves the overall light efficiency. The high refractive material can enhance the spontaneously emitted fluorescence efficiency, and can produce an advantage that a fine pattern can be easily formed by producing a photosensitive resin composition.

  Along with the fluorescent dye and the highly refractive material, the self-luminous photosensitive resin composition according to the present invention includes an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent.

  Each composition will be described below.

  The fluorescent dye used in the color conversion layer is not limited in the present invention as long as it can convert light in a specific wavelength region in incident light having a predetermined wavelength range into visible light, and has fluorescence characteristics. Either can be used.

  Preferably, the usable fluorescent dye is selected from the group consisting of coumarin, naphthalimide, quinacridone, cyanine, xanthine, pyridine, low molecular light emitting material, polymer light emitting material, and combinations thereof. Use one.

  Specifically, the fluorescent dye includes 3- (2-benzothiazolyl) -7-diethylaminocoumarin (coumarin 6), 3- (2-benzimidazolyl) -7-diethylaminocoumarin (coumarin 7), and coumarin-based compounds including coumarin 135. A fluorescent dye, a naphthalimide fluorescent dye including Solvent Yellow 43, Solvent Yellow 44, and the like; a quinacridone fluorescent dye such as diethylquinacridone (DEQ); and 4-dicyanomethylene-2-methyl-6- ( cyanine-based fluorescent dyes including p-dimethylaminostyryl) -4H-pyran (DCM-1 (I)), DCM-2 (II), DCJTB (III), etc., and xanthines including rhodamine B and rhodamine 6G Fluorescent dye and pyridine-based fluorescent dye containing pyridine 1 And low molecules such as 4,4-difluoro-1,3,5,7-tetraphenyl-4-bora-3a, 4a-diaza-s-indacene (IV), lumogen F red, Nile red (V) One kind selected from the group consisting of a light emitting material, a polymer light emitting material including polyphenylene, polyarylene, polyfluorene, and the like, and a combination thereof can be used. Preferably, a coumarin fluorescent dye is used as the fluorescent dye, and when used in combination with other fluorescent dyes, it is used very effectively when the wavelength shift width is wide, such as conversion from blue light to red light.

  In addition, the fluorescent dye may be a solvent, a acid, a basic, a reactive, or a direct (Color Index) [The Society of Dyers [0119] and Colorists publication]. ), Dyes classified as Disperse or Vat. More specifically, the following dyes having a color intex (CI) number may be mentioned, but the dye is not limited thereto.

C. I. Solvent Yellow 25, 79, 81, 82, 83, 89;
C. I. Acid Yellow 7, 23, 25, 42, 65, 76;
C. I. Reactive Yellow 2, 76, 116;
C. I. Direct yellow 4, 28, 44, 86, 132;
C. I. Discharge Yellow 54, 76;
C. I. Solvent orange 41, 54, 56, 99;
C. I. Acid Orange 56, 74, 95, 108, 149, 162;
C. I. Reactive Orange 16;
C. I. Direct orange 26;
C. I. Solvent Red 24, 49, 90, 91, 118, 119, 122, 124, 125, 127, 130, 132, 160, 218;
C. I. Acid Red 73, 91, 92, 97, 138, 151, 211, 274, 289;
C. I. Acid Violet 102;
C. I. Solvent Green 1, 5;
C. I. Acid Green 3, 5, 9, 25, 28;
C. I. Basic Green 1;
C. I. Bat Green 1

  Such a fluorescent dye is used in an amount of 0.1 to 10% by weight, preferably 0.2 to 5% by weight, in 100% by weight of the total composition. Such a content is a range selected in consideration of securing high light efficiency and a problem of lowering luminance. If the content is less than the above range, the light efficiency cannot be ensured. Even if the above range is exceeded, the light efficiency cannot be further improved, and the production cost of the color conversion filter increases at a high cost. Adjust and use.

  The high refractive material that characterizes the present invention together with the fluorescent dye is used to increase the fluorescent efficiency of the fluorescent dye. The light emitted from the light source of the backlight unit is incident on the color conversion layer with a critical angle. At this time, the incident light or the spontaneous emission light emitted spontaneously by the fluorescent dye is combined with the highly refractive material. Thus, the light intensity due to the light extraction effect is increased, and as a result, the fluorescence efficiency of the color conversion layer is increased.

Any highly refractive material can be used as long as its refractive index is 1.7 or more, preferably 1.7 to 3.0, and is not particularly limited in the present invention. As the high refractive material, an organic or inorganic material can be used, and an inorganic material is preferably used. _{Typically, ZnO, ZrO 2, BaTiO 3} , Si, SiC, ZnS, AlN, BN, GaTe, AgI, TiO 2, SiON, Ta 2 O 5, Ti 3 O 5, ITO, IZO, ATO, ZnO-Al One selected from the group consisting of Nb ₂ O ₃ , SnO, Si ₃ N ₄ , and combinations thereof can be used. A material surface-treated with a compound having an unsaturated bond such as acrylate may be used as necessary.

  The particles of the high refractive material limit the particle size and the content in the entire composition so that the fluorescence intensity can be sufficiently improved.

  Preferably, the high refractive material can have an average particle diameter of several nm to several hundred μm, preferably 1 nm to 500 μm, more preferably 10 nm to 1000 nm. At this time, if the particle size is too small, agglomeration may occur in the production process of the composition. Conversely, if the particle size is too large, it may sink in the composition or obtain a color conversion layer surface of uniform quality. Since it cannot be used, adjust it properly within the above range.

  Further, it is used in an amount of 0.0001 to 50% by weight, preferably 0.001 to 10% by weight, in 100% by weight of the total composition. If the content of the high refractive material is less than the above range, the effect to be obtained cannot be ensured, and conversely, if the content exceeds the above range, the effect of further increasing the fluorescence efficiency is insufficient. However, since the problem that the brightness | luminance falls rather with the problem of the stability fall of a composition generate | occur | produces, it uses appropriately within the said range.

  Along with such a fluorescent dye and a highly refractive material, the self-luminous photosensitive composition according to the present invention contains an alkali-soluble resin.

  Alkali-soluble resins have reactivity and alkali solubility due to the action of light and heat, and act as a dispersion medium for fluorescent dyes, which can be dissolved in an alkaline developer used in the development stage for the production of filters. Any binder resin can be used.

  Preferably, the alkali-soluble resin having an acid value of 20 to 200 (KOH mg / g) is selected and used. 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 solubility. When the acid value of the resin falls within the above range, the solubility in the developer is improved and the non-exposed part is easily dissolved, the sensitivity increases, and as a result, the pattern of the exposed part remains at the time of development and the remaining film ratio There is an advantage that (film retaining ratio) is improved.

  In addition, the alkali-soluble resin can take into consideration the limitation of molecular weight and molecular weight distribution diagram (MW / MN) in order to improve surface hardness for use in the color conversion layer. Preferably, the weight average molecular weight is 3,000 to 200,000, preferably 5,000 to 100,000, and the molecular weight distribution diagram is 1.5 to 6.0, preferably 1.8 to Polymerize directly to have a range of 4.0 or use purchased. Alkali-soluble resins having molecular weights and molecular weight distribution diagrams in the above range have improved hardness, high residual film ratio, excellent solubility of unexposed areas in the developer, and improved resolution. be able to.

  The alkali-soluble resin is selected from the group consisting of a polymer of a carboxyl group-containing unsaturated monomer, a copolymer with a monomer having an unsaturated bond copolymerizable therewith, and a combination thereof. Contains one species.

  At this time, unsaturated monocarboxylic acid, unsaturated dicarboxylic acid, unsaturated tricarboxylic acid, etc. can be used as the carboxyl group-containing unsaturated monomer. 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 polyvalent carboxylic acid may be an acid anhydride, and specifically includes maleic anhydride, itaconic anhydride, citraconic anhydride, and the like. The unsaturated polyvalent carboxylic acid may be a mono (2-methacryloyloxyalkyl) ester such as succinic acid mono (2-acryloyloxyethyl), succinic acid mono (2-methacryloyloxyethyl), phthalate. Examples include acid mono (2-acryloyloxyethyl) and phthalate mono (2-methacryloyloxyethyl). The unsaturated polyvalent carboxylic acid may be a mono (meth) acrylate of a dicarboxy polymer at both ends, and examples thereof include ω-carboxypolycaprolactone monoacrylate and ω-carboxypolycaprolactone monomethacrylate. These carboxyl group-containing monomers are used alone or in admixture of two or more.

  Monomers that can be copolymerized with a carboxyl group-containing unsaturated monomer include aromatic vinyl compounds, unsaturated carboxylic acid ester compounds, unsaturated carboxylic acid aminoalkyl ester compounds, unsaturated carboxylic acid glycidyl ester compounds, Carboxylic acid vinyl ester compound, unsaturated ether compound, vinyl cyanide compound, unsaturated imide compound, aliphatic conjugated diene compound, giant monomer having monoacryloyl group or monomethacryloyl group at the end of the molecular chain, bulky 1 type selected from the group which consists of a sex monomer and these combination can be used.

  More specifically, the copolymerizable monomer includes styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m-methoxy. Styrene, p-methoxystyrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p-vinyl benzyl glycidyl ether, indene Aromatic vinyl compounds such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, -Butyl acrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4 -Hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate Relate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol Methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylate, methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate , Isobornyl methacrylate, dicyclopentadienyl acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth) acrylate, norbornyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxy Unsaturated carboxylic acid esters such as propyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate, 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, -Unsaturated carboxylic acid aminoalkyl ester compounds such as aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate, and 3-dimethylaminopropyl methacrylate; and unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate. Carboxylic acid vinyl ester compounds such as vinyl acetate, vinyl propionate, vinyl butyrate, vinyl benzoate, unsaturated ether compounds such as vinyl methyl ether, vinyl ethyl ether, allyl glycidyl ether, acrylonitrile, methacrylonitrile, α -Vinyl cyanide compounds such as chloroacrylonitrile and vinylidene cyanide, acrylamide, methacrylamide, α-chloroacrylamide, Unsaturated amides such as 2-hydroxyethylacrylamide and N-2-hydroxyethylmethacrylamide, unsaturated imide compounds such as maleimide, benzylmaleimide, N-phenylmaleimide, and N-cyclohexylmaleimide; Polymers of aliphatic conjugated dienes such as butadiene, isoprene and chloroprene and polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate and polysiloxane are mono-terminated at the molecular chain ends. Giant monomers having an acryloyl group or a monomethacryloyl group, a monomer having a norbornyl skeleton capable of lowering the non-dielectric constant, a monomer having an adamantane skeleton, a monomer having a rosin skeleton, etc. Uses bulky monomer Is possible.

  Such an alkali-soluble resin is used in an amount of 5 to 85% by weight, preferably 7 to 50% by weight, in 100% by weight of the total composition. Such a content is a range selected in consideration of the solubility in the developer and pattern formation from a multifaceted perspective. When used within the above range, the solubility in the developer is sufficient and pattern formation is easy. In the development, a reduction in the film thickness of the pixel portion of the exposed portion is prevented, and the leakage of the non-pixel portion is improved.

  The photopolymerizable compound is a compound that can be polymerized by the action of a photopolymerization initiator, and a monofunctional monomer, a bifunctional monomer, a polyfunctional monomer other than that, and the like are used.

  Specific examples of the monofunctional monomer include nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, N-vinyl pyrrolidone and the like. 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) acrylate, and bisphenol. Examples thereof include bis (acryloyloxyethyl) ether of A and 3-methylpentanediol di (meth) acrylate. Specific examples of other polyfunctional monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol. Examples include hexa (meth) acrylate. Of these, polyfunctional monomers having two or more functions are preferably used.

  Such a photopolymerizable compound is used in an amount of 1 to 50% by weight, preferably 4 to 20% by weight, in 100% by weight of the total composition. A range selected in consideration of such a tendency that the strength and smoothness of the pixel portion are good, and if the content is less than the above range, the strength and the smoothness are insufficient. If it exceeds the above range, there is a problem that patterning cannot be easily performed due to high strength.

  The photopolymerization initiator is a compound for initiating polymerization of the photopolymerizable compound, and an acetophenone compound is preferably used in the present invention.

  Examples of acetophenone compounds include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2. -Methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- ( 4-morpholinophenyl) butan-1-one, oligomers of 2-hydroxy-2-methyl [4- (1-methylvinyl) phenyl] propan-1-one, etc., among which 2-benzyl- 2-Dimethylamino-1- (4-morpholinophenyl) butan-1-one is preferably usable It is.

  The photopolymerization initiator according to the present invention is such that the self-luminous photosensitive resin composition is highly sensitive and the exposure time is shortened, thereby improving productivity and maintaining high resolution. The content is adjusted. Preferably, the photopolymerization initiator is used in an amount of 0.1 to 40% by weight, preferably 0.5 to 30% by weight in the entire composition. If the content is less than the above range, the polymerization rate is too slow. Conversely, if the content exceeds the above range, the cross-linking reaction is exceeded by excessive reaction, and the physical properties of the coating film are rather lowered. use.

  The acetophenone-based photopolymerization initiator can be used in combination with another photopolymerization initiator or a photopolymerization initiation auxiliary agent.

  Examples of photopolymerization initiators that can be combined include benzoin compounds including benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl dimethyl ketal, benzophenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4- Benzophenone compounds including phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4′-bis (dimethylamino) benzophenone, 4,4′-bis (diethylamino) benzophenone, and 2,4,6-trichloro-s- Triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (3 ′, 4′-dimethoxystyryl) -4,6-bis (trichloromethyl) -s-tri 2- (4'-methoxynaphthyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2 -(P-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-biphenyl-4,6-bis (trichloromethyl) -s-triazine, bis (trichloromethyl) -6-styryl-s -Triazine, 2- (naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2- (4-methoxynaphth-1-yl) -4,6-bis (trichloromethyl) -s- Triazines including triazine, 2,4-trichloromethyl (piperonyl) -6-triazine, 2,4-trichloromethyl (4'-methoxystyryl) -6-triazine and the like Compounds, sulfur compounds such as thioxanthone, 2-chlorothioxanthone, 2,4-diethylthioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone, 2-ethylanthraquinone, octamethylanthraquinone, 1,2 -Anthraquinone compounds such as benzanthraquinone, 2,3-diphenylanthraquinone, organic peroxides such as azobisisobutylnitrile, benzoyl peroxide, cumene peroxide, and thiols such as 2-mercaptobenzoxazole and 2-mercaptobenzothiazole Compounds.

  The combinable photopolymerization initiator can be used in the range of 0.1 to 0.5 parts by weight with respect to 1 part by weight of the acetophenone photopolymerization initiator.

  The photopolymerization initiation auxiliary agent is used to increase the polymerization efficiency, and amine compounds, alkoxyanthracene compounds, thioxanthone compounds, and the like can be used.

  Examples of amine compounds include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, 4 2-dimethylhexyl dimethylaminobenzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone (commonly known as Michler's ketone), 4,4'-bis (diethylamino) benzophenone, 4,4'- Examples thereof include bis (ethylmethylamino) benzophenone, and among these, 4,4′-bis (diethylamino) benzophenone is preferable. Examples of the alkoxyanthracene compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, 2-ethyl-9,10-diethoxyanthracene and the like. Can be mentioned. Examples of the thioxanthone compound include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone, and the like. The photopolymerization initiation auxiliary agent can be produced directly or can be purchased and used commercially. As an example, the trade name “EAB-F” [manufacturer: Hodogaya Chemical Co., Ltd.] series Etc. are used.

  Such a photopolymerization initiation assistant is usually used in an amount of 10 mol or less, preferably 0.01 to 5 mol, per 1 mol of the photopolymerization initiator. When the photopolymerization initiation auxiliary agent is used within the above range, it is possible to increase the polymerization efficiency and expect an improvement in productivity.

  Any solvent can be used as long as it can dissolve or disperse the above-mentioned composition, and is not particularly limited in the present invention. Representative examples include alkylene glycol monoalkyl ethers, alkylene glycol alkyl ether acetates, aromatic hydrocarbons, ketones, lower and higher alcohols, and cyclic esters. More specifically, as the solvent, alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether Diethylene glycol dialkyl ethers such as diethylene glycol dibutyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate And alkylene glycol alkyl ether acetates such as 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, and ethanol , Alcohols such as propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin, esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate, and cyclic esters such as γ-butyrolactone It is done.

  Among the above solvents, in terms of coating properties and drying properties, it is preferable to have an organic solvent having a boiling point of 100 to 200 ° C. among the above solvents, and more preferably alkylene glycol alkyl ether acetates, ketones, 3 It can have esters such as ethyl ethoxypropionate and methyl 3-methoxypropionate, more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, 3 -Methyl methoxypropionate and the like. These solvents (E) are used alone or in combination of two or more.

  Such a solvent is used as the balance so as to satisfy 100% by weight of the total composition. Such a content is a range selected in consideration of the dispersion stability of the composition and process ease (for example, coating property) in the production process. In other words, the self-luminous photosensitive resin composition according to the present invention can produce a color conversion filter by wet coating. At this time, as a wet coating method, a roll coater, a spin coater, a slit and spin coater, a slit coater (die coater) Also, a coating apparatus such as an ink jet is used.

  In addition, the self-luminous photosensitive resin composition according to the present invention may further include known additives according to various purposes. As such additives, additives such as fillers, other polymer compounds, pigment dispersants, adhesion promoters, antioxidants, ultraviolet absorbers, and aggregation inhibitors can be used in parallel. These additives can be used alone or in combination of two or more, and are preferably used in an amount of 1% by weight or less in the entire composition in consideration of light efficiency and the like.

  Glass, silica, alumina, etc. can be used as the filler, and other polymer compounds include curable resins such as epoxy resins and maleimide resins, polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoro. Examples thereof include thermoplastic resins such as alkyl acrylate, polyester, and polyurethane.

  As the pigment dispersant, commercially available surfactants are used, and examples thereof include silicon-based, fluorine-based, ester-based, cationic-based, anionic-based, non-ionic, and amphoteric surfactants. These may be used alone or in combination of two or more. Examples of the surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkyl ethers, polyethylene glycol diesters, sorbitan fatty acid esters, fatty acid-modified polyesters, tertiary amine-modified polyurethanes, and polyethyleneimines. In addition, as trade names, KP (manufactured by Shin-Etsu Chemical Co., Ltd.), Polyflow (POLYFLOW) (manufactured by Kyoeisha Chemical Co., Ltd.), Ftop (EFTOP) (manufactured by Tochem Products), Megapack (manufactured by Dainippon Ink & Chemicals, Inc.), Florad (manufactured by Sumitomo 3M), Asahi guard, Surflon (above, manufactured by Asahi Glass Co., Ltd.) , Solspers ) (Zeneca Co., Ltd.), EFKA (manufactured by manufactured by EFKA Chemicals Co., Ltd.), PB821 (Ajinomoto Co., Ltd.), and the like.

  Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, and N- (2-aminoethyl). ) -3-Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltri Examples include methoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, and 3-mercaptopropyltrimethoxysilane.

  Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

  Specifically, as the ultraviolet absorber, 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole, alkoxybenzophenone, and the like can be used. Specific examples include sodium polyacrylate.

  As described above, the production of the self-luminous photosensitive composition is not particularly limited in the present invention, and follows a known method for producing a photosensitive composition.

  Such a self-luminous photosensitive composition is preferably applicable as a color conversion layer of a display device, preferably a liquid crystal display device requiring a separate light source.

  In the introduction of the color conversion layer, after coating, a pattern corresponding to R and G of the color filter can be formed by patterning through a photolithography method. The photolithography method is not particularly limited in the present invention, and any known method using a photosensitive resin composition can be applied.

  As an example, the patterned color conversion layer is

a) applying a self-luminous photosensitive composition to the substrate surface;
b) drying the solvent by precure (pre-baking);
c) applying a photomask on the resulting coating and irradiating with active light to cure the exposed portion;
d) performing a development step of dissolving the unexposed area using an alkaline aqueous solution;
e) Steps of drying and post-baking.

  As the substrate, a glass substrate or a polymer plate is used. As the glass substrate, soda lime glass, barium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass or quartz is particularly preferably used. Examples of the polymer plate include polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide, and polysulfone.

  At this time, a wet coating method using a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (also referred to as a die coater), or an inkjet can be used so that a desired thickness can be obtained.

  Pre-baking is performed by heating with an oven, a hot plate, or the like. The heating temperature and heating time in the pre-baking are appropriately selected depending on the solvent to be used, and are performed at a temperature of 80 to 150 ° C. for 1 to 30 minutes, for example.

  In addition, the exposure performed after pre-baking is performed by an exposure machine and exposed through a photomask so that only the portion corresponding to the pattern is exposed. At this time, for example, visible light, ultraviolet rays, X-rays, and electron beams can be used as the irradiation light.

  The non-exposed portion of the alkali developed non-exposed portion after exposure is performed for the purpose of removing the resist, and a desired pattern is formed by this development. As the developer suitable for the alkali development, for example, an alkali metal or alkaline earth metal carbonate aqueous solution is used. In particular, using an alkaline aqueous solution containing 1 to 3% by weight of a carbonate such as sodium carbonate, potassium carbonate or lithium carbonate, a developing machine or an ultrasonic cleaner at a temperature of 10 to 50 ° C., preferably 20 to 40 ° C. To do.

  The post-baking is performed in order to improve the adhesion between the patterned color conversion layer and the substrate, and is performed through heat treatment at 80 to 220 ° C. for 10 to 120 minutes. Post-baking is performed using an oven, a hot plate, or the like as in pre-baking.

  The color conversion layer obtained through such a method has a sufficient size, several to several thousand μm, so as to maintain high luminance and ensure excellent color conversion characteristics and high light efficiency. The thickness is preferably 0.1 to 100 μm, more preferably 1 to 50 μm.

  The color conversion layer can be at any position between the light source and the color filter, and based on the structure of the light source / color conversion layer / color filter, the color conversion layer is in direct contact with the color filter, Alternatively, it can be introduced as a structure in which another film or substrate is inserted.

  At this time, an LED, a cold cathode tube, an inorganic EL, an organic EL fluorescent lamp, an incandescent lamp, or the like is used as the light source. Preferably, a liquid crystal display device using the LED as a light source is possible.

  A display device including such a light source and a color conversion layer can maintain high luminance, ensure excellent color conversion characteristics and high light efficiency, and realize high-quality sharp image quality.

  Hereinafter, preferred embodiments are presented to facilitate understanding of the present invention. However, the following embodiments are examples of the present invention, and various changes and modifications can be made within the scope and technical scope of the present invention. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims. In addition, “%” and “part” indicating the content below are based on mass unless otherwise specified.

Production Example 1: Production of alkali-soluble resin A A flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen introducing pipe was prepared. On the other hand, as a monomer dropping funnel, 74.8 g (0.20 mol) of benzylmaleimide was prepared. ), Acrylic acid 43.2 g (0.30 mol), vinyl toluene 118.0 g (0.50 mol), t-butylperoxy-2-ethylhexanoate 4 g, propylene glycol monomethyl ether acetate (PGMEA) 40 g. After the addition, the mixture was prepared by stirring and mixing, and a chain transfer agent dropping tank was prepared by adding 6 g of n-dodecanethiol and 24 g of PGMEA and stirring and mixing them.

  Thereafter, 395 g of PGMEA was introduced into the flask, the atmosphere in the flask was changed from air to nitrogen, and the temperature of the flask was raised to 90 ° C. while stirring. Subsequently, the dropping of the monomer and the chain transfer agent from the dropping funnel was started. The dropwise addition was carried out for 2 hours while maintaining 90 ° C., and after 1 hour, the temperature was raised to 110 ° C. and maintained for 3 hours, and then a gas introduction pipe was introduced, oxygen / nitrogen = 5/95 (v / v) Bubbling of the mixed gas was started.

  Subsequently, 28.4 g of glycidyl methacrylate [(0.10 mol), (33 mol% based on the carboxyl group of acrylic acid used in this reaction)], 2,2′-methylenebis (4-methyl-6-t -Butylphenol) 0.4 g and triethylamine 0.8 g were put into the flask, and the reaction was continued at 110 ° C. for 8 hours to obtain Resin A having a solid content acid value of 70 mgKOH / g.

  The weight average molecular weight in terms of polystyrene measured by GPC was 16,000, and the molecular weight distribution (Mw / Mn) was 2.3.

Production Example 2: Production of alkali-soluble resin B 182 g of propylene glycol monomethyl ether acetate was introduced into a flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen introduction pipe, and the atmosphere in the flask was changed from air to nitrogen. Then, after raising the temperature to 100 ° C., 70.5 g (0.40 mol) of benzyl methacrylate, 45.0 g (0.50 mol) of methacrylic acid, 44.5 g (0.10 mol) of monomethacrylate having an cyclic skeleton, and A solution obtained by adding 3.6 g of azobisisobutyronitrile to a mixture containing 136 g of propylene glycol monomethyl ether acetate was dropped into the flask over 2 hours with a dropping funnel, and stirring was further continued at 100 ° C. for 5 hours.

  Subsequently, the atmosphere in the flask was changed from nitrogen to air, 30 g of glycidyl methacrylate [0.2 mol, (40 mol% based on the carboxyl group of methacrylic acid used in this reaction)], 0.9 g of trisdimethylaminomethylphenol. And 0.145 g of hydroquinone was put into the flask and the reaction was continued at 110 ° C. for 6 hours to obtain a resin B having a solid content acid value of 99 mgKOH / g.

  The weight average molecular weight in terms of polystyrene measured by GPC was 28,000, and the molecular weight distribution (Mw / Mn) was 2.2.

Production Example 3: Production of alkali-soluble resin C 182 g of propylene glycol monomethyl ether acetate was introduced into a flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen introduction pipe, and the atmosphere in the flask was changed from air to nitrogen. Then, after raising the temperature to 100 ° C., 70.5 g (0.40 mol) of benzyl methacrylate, 45.0 g (0.50 mol) of methacrylic acid, 22.0 g (0.10 mol) of 2- (2-methyl) adamantyl methacrylate Then, a solution of 3.6 g of azobisisobutyronitrile added to a mixture containing 136 g of propylene glycol monomethyl ether acetate was dropped into the flask over 2 hours from the dropping funnel, and stirring was further continued at 100 ° C. for 5 hours.

  Subsequently, the atmosphere in the flask was changed from nitrogen to air, 30 g of glycidyl methacrylate [0.2 mol, (40 mol% based on the carboxyl group of methacrylic acid used in this reaction)], 0.9 g of trisdimethylaminomethylphenol. And 0.145 g of hydroquinone was put into the flask and the reaction was continued at 110 ° C. for 6 hours to obtain a resin C having a solid content acid value of 99 mgKOH / g.

  The weight average molecular weight in terms of polystyrene measured by GPC was 23,000, and the molecular weight distribution (Mw / Mn) was 2.3.

  For the measurement of the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the resin, the GPC method is used under the following conditions. At this time, the ratio of the obtained numerical values is molecular weight distribution (Mw / Mn). It was.

Apparatus: HLC-8120GPC (manufactured by TOSOH)
Column: TSK-GELG4000HXL + TSK-GELG2000HXL (series connection)
Column temperature: 40 ° C
Mobile phase solvent: Tetrahydrofuran Flow rate: 1.0 ml / min Injection volume: 50 μl
Detector: RI
Measurement sample concentration: 0.6% by mass (solvent = tetrahydrofuran)
Calibration standard: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by TOSOH)

Examples 1 to 8 and Comparative Examples 1 to 5: After adding a solvent to the color conversion layer production mixer, an alkali-soluble resin, a photopolymerizable compound, and a photopolymerization initiator are added to the dye and the high refractive material. The mixture was uniformly mixed through stirring to produce a self-luminous photosensitive resin composition. At this time, the composition followed the composition shown in Table 1 below.

  The obtained photosensitive resin composition was applied onto a glass substrate by a spin coating method, then placed on a heating plate and maintained at a temperature of 100 ° C. for 3 minutes to form a thin film.

Subsequently, the thin film was irradiated with ultraviolet rays. At this time, the ultra-high pressure mercury lamp (trade name USH-250D) manufactured by Ushio Electric Co., Ltd. was used as the ultraviolet light source, and light was irradiated at an exposure amount (365 nm) of 40 mJ / cm ^{2 in} an air atmosphere. Was not used.

  The thin film irradiated with ultraviolet rays was developed with a KOH aqueous solution developing solution having a pH of 12.5 for 60 seconds using a spray developing machine, and then heated in a heating oven at 220 ° C. for 20 minutes to produce a pattern. The thickness of the color conversion layer thus produced was 3.0 μm.

１）ルモゲン（Ｌｕｍｏｇｅｎ）Ｆレッド
２）ローダミン（Ｒｈｏｄａｍｉｎｅ）Ｂ
３）クマリン６
４）ＬＸ−ＳＥＲＩＥＳ（現代ケミカル製）
５）屈折率：２．７
６）屈折率：２．０
７）屈折率：１．４５
８）製造例１により製造された樹脂
９）製造例２により製造された樹脂
１０）製造例３により製造された樹脂
１１）ジペンタエリトリトールヘキサアクリレート、日本火薬(株)製
１２）２−ベンジル−２−ジメチルアミノ−１−（４−モルフォリノフェニル）ブタン−１−オン、Ｃｉｂａ Ｓｐｅｃｉａｌｔｙ Ｃｈｅｍｉｃａｌ社製
１３）４、４’−ジ（Ｎ、Ｎ’−ジメチルアミノ）−ベンゾフェノン、保土谷化学工業（株）製
１４）プロピレングリコールモノメチルエーテルアセテート

1) Lumogen F Red 2) Rhodamine B
3) Coumarin 6
4) LX-SERIES (made by Hyundai Chemical)
5) Refractive index: 2.7
6) Refractive index: 2.0
7) Refractive index: 1.45
8) Resin produced by Production Example 1 9) Resin produced by Production Example 2 10) Resin produced by Production Example 3 11) Dipentaerythritol hexaacrylate, Nippon Explosives Co., Ltd. 12) 2-Benzyl- 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, manufactured by Ciba Specialty Chemical 13) 4, 4′-di (N, N′-dimethylamino) -benzophenone, Hodogaya Chemical Industries ( 14) Propylene glycol monomethyl ether acetate

１）ルモゲン（Ｌｕｍｏｇｅｎ）Ｆレッド
２）ローダミン（Ｒｈｏｄａｍｉｎｅ）Ｂ
３）クマリン６
４）ＬＸ−ＳＥＲＩＥＳ（現代ケミカル製）
５）屈折率：２．７
６）屈折率：２．０
７）屈折率：１．４５
８）製造例１により製造された樹脂
９）製造例２により製造された樹脂
１０）製造例３により製造された樹脂
１１）ジペンタエリトリトールヘキサアクリレート、日本火薬(株)製
１２）２−ベンジル−２−ジメチルアミノ−１−（４−モルフォリノフェニル）ブタン−１−オン、Ｃｉｂａ Ｓｐｅｃｉａｌｔｙ Ｃｈｅｍｉｃａｌ社製
１３）４、４’−ジ（Ｎ、Ｎ’−ジメチルアミノ）−ベンゾフェノン、保土谷化学工業（株）製
１４）プロピレングリコールモノメチルエーテルアセテート

1) Lumogen F Red 2) Rhodamine B
3) Coumarin 6
4) LX-SERIES (made by Hyundai Chemical)
5) Refractive index: 2.7
6) Refractive index: 2.0
7) Refractive index: 1.45
8) Resin produced by Production Example 1 9) Resin produced by Production Example 2 10) Resin produced by Production Example 3 11) Dipentaerythritol hexaacrylate, Nippon Explosives Co., Ltd. 12) 2-Benzyl- 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, manufactured by Ciba Specialty Chemical 13) 4, 4′-di (N, N′-dimethylamino) -benzophenone, Hodogaya Chemical Industries ( 14) Propylene glycol monomethyl ether acetate

Experimental Example 1: Measurement of emission intensity of color conversion layer In order to confirm whether or not the fluorescence efficiency of the color conversion layer obtained from the examples and comparative examples can be increased, a quantum efficiency measuring device (QE-1000, manufactured by Otsuka Co., Ltd.) was used. The luminescence PL was measured. The obtained results are shown in Table 3 below. In this case, it can be seen that the higher the measured emission intensity, the higher the fluorescence efficiency.

  As shown in Table 3, it can be seen that the fluorescence efficiency is increased by simultaneously using the fluorescent dye and the high refractive material in the present invention.

  However, when a pigment is used instead of the fluorescent dye as in Comparative Examples 1 and 2, the luminous efficiency value is very low, and this tendency is the same in the other Comparative Examples.

  The self-luminous photosensitive resin composition according to the present invention can be introduced into the color conversion layer of a display device to maintain a high level of color reproducibility and luminance and achieve a high-quality sharp image quality.

1 Substrate 3 Color conversion layer 5 Color filter

Claims (7)

A self-luminous photosensitive resin composition for forming a color conversion layer,
Based on the total weight of the composition ,
Coumarin 6 0.1-10% by weight,
T iO ₂ refractive index Ru 2.7 to 3.0 der 0.001 to 50% by weight,
5 to 85% by weight of alkali-soluble resin,
1 to 50% by weight of photopolymerizable compound,
2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one and 4,4′-di (N, N′-dimethylamino) -benzophenone 0.1-40% by weight, and Contains solvent as the balance,
The alkali-soluble resin has a weight average molecular weight of 3,000 to 200,000, in the range of molecular weight distribution is 1.8 to 4.0, acid value be 20~200 (KOHmg / g); A polymer of a carboxyl group-containing unsaturated monomer, or a copolymer with a monomer having an unsaturated bond copolymerizable therewith, and one selected from the group consisting of combinations thereof,
The carboxyl group-containing unsaturated monomer includes one selected from the group consisting of unsaturated monocarboxylic acids, unsaturated dicarboxylic acids, unsaturated tricarboxylic acids, and combinations thereof,
The monomers capable of copolymerization include aromatic vinyl compounds, unsaturated carboxylic acid ester compounds, unsaturated carboxylic acid aminoalkyl ester compounds, unsaturated carboxylic acid glycidyl ester compounds, carboxylic acid vinyl ester compounds, and unsaturated ethers. A self-luminous photosensitive resin composition comprising one selected from the group consisting of a compound, a vinyl cyanide compound, an unsaturated imide compound, an aliphatic conjugated diene compound, and combinations thereof. The self-luminous photosensitive resin composition according to claim 1, wherein the TiO ₂ has an average particle diameter of 1 nm to 500 μm.   The photopolymerizable compound includes nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, N-vinylpyrrolidone, 1,6-hexanediol di (meta ) Acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, bis (acryloyloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate , Trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol Rupenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and characterized in that it comprises a one selected from the group consisting of self-emission photosensitive resin composition of claim 1. The self-luminous photosensitive resin composition is further selected from the group consisting of benzoin compounds, benzophenone compounds, triazine compounds, sulfur compounds, anthraquinone compounds, organic peroxides, thiol compounds, and combinations thereof. Except one or more of said 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one and 4,4′-di (N, N-dimethylamino) -benzophenone The self-luminous photosensitive resin composition according to claim 1, further comprising a photopolymerization initiation auxiliary agent.   The solvent is one selected from the group consisting of alkylene glycol monoalkyl ethers, alkylene glycol alkyl ether acetates, aromatic hydrocarbons, ketones, lower and higher alcohols, cyclic esters, and combinations thereof. The self-luminous photosensitive resin composition according to claim 1, comprising: The self-luminous photosensitive resin composition is selected from the group consisting of fillers, other polymer compounds excluding the alkali-soluble resins , pigment dispersants, adhesion promoters, ultraviolet absorbers, anti-aggregation agents, and combinations thereof. The self-luminous photosensitive resin composition according to claim 1, comprising one selected type.   A display device comprising a color conversion layer made of the self-luminous photosensitive resin composition according to claim 1 on an upper portion of a substrate.

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