KR102660293B1 - Photosensitive resin composition, color conversion panel using the same and display device - Google Patents

Abstract

The present invention includes nanophosphors, a photopolymerization initiator, a photopolymerization compound, an antioxidant, and a solvent, and the antioxidant is one selected from phenol-based, phosphorus-based, and sulfur-based compounds. A photosensitive resin composition comprising the above is provided.

Description

Photosensitive resin composition, color conversion panel and display device using the same {PHOTOSENSITIVE RESIN COMPOSITION, COLOR CONVERSION PANEL USING THE SAME AND DISPLAY DEVICE}

The present invention relates to a photosensitive resin composition, a color conversion panel and a display device using the same, and more specifically, to a photosensitive resin composition with excellent light efficiency and color reproduction rate, and a color conversion panel and a display device using the same.

The color filter of a liquid crystal display device or the color conversion layer of a color conversion panel is manufactured by coating a fine area colored with two or more colors on a transparent substrate.

The colored photosensitive resin composition used to manufacture a color filter or color conversion layer generally consists of a binder resin, a photopolymerizable monomer, a photopolymerization initiator, a pigment, a solvent, and other additives.

Meanwhile, pigments in colored photosensitive resin compositions have limitations in securing excellent brightness characteristics, so there are efforts to improve brightness characteristics by using components other than pigments, such as quantum dots or phosphors.

However, in accordance with recent high-quality specifications, color filters or color conversion layers with superior brightness and heat resistance are required. In particular, there is a problem in that light efficiency and color reproducibility are reduced due to heat generated during the patterning process.

The technical problem to be achieved by the present invention is to provide a photosensitive resin composition with excellent light efficiency and color reproducibility, and a color conversion panel and display device using the same.

In order to solve this problem, according to an embodiment of the present invention, nanophosphors, a photopolymerization initiator, a photopolymerization compound, an antioxidant, and a solvent are included, and the antioxidant is phenol-based, phosphorus, etc. Provided is a photosensitive resin composition containing at least one selected from a group of compounds and a sulfur-based compound.

The nano phosphor may include at least one of quantum dots and inorganic phosphors.

The phenolic antioxidants include 2,6-dietertiary butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl (3,5-ditertiary butyl-4-hydroxyphenyl) Propionate, distearyl (3,5-ditertiary butyl-4-hydroxybenzyl) phosphonate, tridecyl·3,5-ditertiary butyl-4-hydroxybenzylthioacetate, thiodiethylenebis[ (3,5-ditertiary butyl-4-hydroxyphenyl)propionate], 4,4'-thiobis(6-tertiary butyl-m-cresol), 2-octylthio-4,6-di( 3,5-ditertiary butyl-4-hydroxyphenoxy)-s-triazine, 2,2'-methylenebis(4-methyl-6-tertiary butylphenol), bis[3,3-bis(4 -Hydroxy-3-tertiary butylphenyl)butyric acid] glycol ester, 4,4'-butylidenebis(2,6-ditertiary butylphenol), 4,4'-butylidenebis(6- tertiary butyl-3-methylphenol), 2,2'-ethylidenebis(4,6-ditertiary butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tertiary) Butylphenyl)butane, bis[2-tertiary butyl-4-methyl-6-(2-hydroxy-3-tertiary butyl-5-methylbenzyl)phenyl]terephthalate, 1,3,5-tris(2 ,6-dimethyl-3-hydroxy-4-tertiary butylbenzyl)isocyanurate, 1,3,5-tris(3,5-ditertiary butyl-4-hydroxybenzyl)isocyanurate, 1 ,3,5-Tris(3,5-dizertbutyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,3,5-tris[(3,5-dizertbutyl-4- Hydroxyphenyl)propionyloxyethyl]isocyanurate, tetrakis[methylene-3-(3', 5'-ditertiary butyl-4'-hydroxyphenyl)propionate]methane, 2-tertiary butyl -4-methyl-6-(2-acryloyloxy-3-tertbutyl-5-methylbenzyl)phenol, 3,9-bis[2-(3-tertbutyl-4-hydroxy-5- Methylhydrocinnamoyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[β-(3-tertbutyl-4-hydroxy -5-methylphenyl)propionate] and tocophenol.

The phosphorus-based antioxidants include triphenyl phosphite, tris (2,4-di tertiary butylphenyl) phosphite, tris (2,5-di tertiary butylphenyl) phosphite, tris (nonylphenyl) phosphite, and tris (dinonyl). Phenyl) phosphite, tris (mono, dimixed nonylphenyl) phosphite, diphenyl acid phosphite, 2,2'-methylenebis (4,6-ditertiary butylphenyl) octyl phosphite, diphenyldecyl phosphite, Diphenyloctyl phosphite, di(nonylphenyl)pentaerythritol diphosphite, phenyl diisodecyl phosphite, tributyl phosphite, tris(2-ethylhexyl) phosphite, tridecyl phosphite, trilauryl phosphite, di Butyl acid phosphite, dilauryl acid phosphite, trilauryl trithiophosphite, bis(neopentyl glycol)·1,4-cyclohexanedimethyldiphosphite, bis(2,4-ditertiary butylphenyl)pentaerythritol depot Spite, bis(2,5-ditertibutylphenyl)pentaerythritol diphosphite, bis(2,6-ditertibutyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite Spite, distearyl pentaerythritol diphosphite, tetra(C12-15 mixed alkyl)-4,4'-isopropylidenediphenyl phosphite, bis[2,2'-methylenebis(4,6-diamylphenyl) ]·Isopropylidenediphenylphosphite, tetratridecyl·4,4'-butylidenebis(2-tertiary butyl-5-methylphenol)diphosphite, hexa(tridecyl)·1,1,3- Tris(2-methyl-5-tertbutyl-4-hydroxyphenyl)butane·triphosphite, tetrakis(2,4-ditertbutylphenyl)biphenylenediphosphanite, Tris(2-[(2 ,4,7,9-Tetrakistertbutyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, 9,10-dihydro-9- Oxa-10-phosphaphenanthrene-10-oxide, tris(2-[(2,4,8,10-tetrakis tertbutyldibenzo[d,f][1,3,2]dioxaphosphepine -6-yl)oxy]ethyl)amine and 2-(1,1-dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1,1-dimethylethyl) ) dibenzo[d,f][1,3,2]dioxaphospepin-6-yl]oxy]propyl]phenol 2-butyl-2-ethylpropanediol·2,4,6-trizet-butylphenol It may contain at least one of monophosphites.

The sulfur-based antioxidant may include at least one of dialkylthiodipropionate and β-alkylmercaptopropionic acid ester of polyol.

The antioxidant may have a content of 1 to 5% by weight based on the total weight of solids of the photosensitive resin composition.

The quantum dots include group II-VI compounds, group III-V compounds, group III-VI compounds, group IV-VI compounds, group II-III-V compounds, group II-III-VI compounds, group IV elements, and group IV compounds. It includes one or more selected from among, and the quantum dot may have a core-shell structure including a core and a shell covering the core.

The core is CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, ZnTe, CdSeS, PbS, PbTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, InP, InZnP, InGaP, InGaN, InAs and at least one compound of ZnO,

The shell may include at least one compound of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, SrSe, CdO, CdS, ZnO, InP, InS, GaP, GaN, GaO, InZnP, InGaP, InGaN, InZnSCdSe and HgSe. You can.

The inorganic phosphor may include one or more selected from garnet-based, silicate-based, sulfide-based, oxynitride-based, nitride-based, and aluminate-based. there is.

The inorganic phosphor is Y ₃ Al ₅ O ₁₂ :Ce ^{3 +} (YAG:Ce), Tb ₃ Al ₅ O ₁₂ :Ce ^{3 +} (TAG:Ce), (Sr,Ba,Ca) ₂ SiO ₄ :Eu ²⁺ , (Sr,Ba,Ca,Mg,Zn) ₂ Si(OD) ₄ :Eu ^{2 +} D=F,Cl,S,N,Br, Ba ₂ MgSi ₂ O ₇ :Eu ²⁺ , Ba ₂ SiO ₄ : Eu ^{2 +} , Ca ₃ (Sc,Mg) ₂ Si3O ₁₂ :Ce ^{3 +} , (Ca,Sr)S:Eu ^{2 +} , (Sr,Ca)Ga ₂ S ₄ :Eu ²⁺ , SrSi ₂ O ₂ N ₂ :Eu ^{2+ ,} SiAlON:Ce ³⁺ , β-SiAlON:Eu ²⁺ , Ca- ^α -SiAlON:Eu ^{2+ ,} Ba ₃ Si ₆ ^O ₁₂ N ₂ :Eu ²⁺ , CaAlSiN ₃ :Eu ^{2+ ,} ( Sr,Ca)AlSiN ₃ :Eu ²⁺ , Sr ₂ Si ₅ N ₈ :Eu ^{2+ ,} (Sr,Ba)Al ₂ O ₄ : ^{Eu 2+ , (} Mg,Sr)Al ₂ O ₄ :Eu ²⁺ and It may include at least one ^of BaMg ₂ Al ₁₆ O ₂₇ :Eu ²⁺ .

The photosensitive resin composition may further include a dispersant.

The photosensitive resin composition may further include a light scattering body.

The light scattering body may include at least one of TiO ₂ , Al ₂ O ₃ and SiO ₂ .

In addition, according to another embodiment of the present invention, a lower substrate, a thin film transistor located on the lower substrate, a pixel electrode connected to the thin film transistor, an upper substrate facing the lower substrate, and located between the lower substrate and the upper substrate. It includes a color filter, wherein the color filter includes nanophosphors and an antioxidant, and the antioxidant is at least one selected from phenol-based, phosphorus-based, and sulfur-based compounds. It provides a liquid crystal display device including a photosensitive resin composition containing.

In addition, according to another embodiment of the present invention, it includes a first substrate, a plurality of color conversion layers located on the first substrate and emitting light of different colors, and a light blocking member located between the color conversion layers. The color conversion layer includes nanophosphors and an antioxidant, and the antioxidant is a photosensitive layer containing at least one selected from phenol-based, phosphorus-based, and sulfur-based compounds. A color conversion panel comprising a resin composition is provided.

Additionally, according to another embodiment of the present invention, it includes a display panel and a color conversion panel located on the display panel, wherein the color conversion panel includes a first substrate and a surface of the first substrate facing the display panel. It includes a plurality of color conversion layers located on top and emitting light of different colors, and a light blocking member located between the color conversion layers, wherein the color conversion layer includes nanophosphors and antioxidants, and the antioxidant The present invention provides a display device including a photosensitive resin composition containing at least one selected from phenol-based, phosphorus-based, and sulfur-based compounds.

The display panel may include a lower substrate, a thin film transistor positioned on the lower substrate, and a pixel electrode connected to the thin film transistor.

It may further include an upper substrate facing away from the lower substrate, and a liquid crystal layer positioned between the lower substrate and the upper substrate.

It may further include a roof layer facing the pixel electrode and a liquid crystal layer located in a plurality of micro spaces between the pixel electrode and the roof layer.

It may further include an organic light-emitting member positioned on the pixel electrode, and a common electrode positioned on the organic light-emitting member.

As described above, according to an embodiment of the present invention, by adding an antioxidant to a photosensitive resin composition containing a nano phosphor, it is possible to prevent the extinction phenomenon due to damage to the nano phosphor that may occur during the process, thereby preventing the display. The device has the advantage of excellent light efficiency and color reproducibility.

1A and 1B are graphs measuring green light retention and light quantity according to the progress of a pattern process using a photosensitive resin composition according to an experimental example and a comparative example according to an embodiment of the present invention.
FIGS. 2A and 2B are graphs measuring red light retention and light quantity according to the progress of a pattern process using a photosensitive resin composition according to an experimental example and a comparative example according to an embodiment of the present invention.
Figure 3 is a graph measuring the color coordinates of a color filter using a photosensitive resin composition according to an embodiment of the present invention.
Figure 4 is a plan view showing a liquid crystal display device according to an embodiment of the present invention.
Figure 5 is a cross-sectional view taken along line VV of Figure 4.
Figure 6 is a cross-sectional view of a color conversion panel according to an embodiment of the present invention.
Figure 7 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.
Figure 8 is a top view of a plurality of pixels in a liquid crystal display device according to an embodiment of the present invention.
FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8.
FIG. 10 is a cross-sectional view showing a modified embodiment of the embodiment of FIG. 9.
Figure 11 is a top view of a plurality of pixels in a liquid crystal display device according to an embodiment of the present invention.
FIG. 12 is a cross-sectional view taken along line XII-XII of FIG. 11.
FIG. 13 is a cross-sectional view taken along line XIII-XIII of FIG. 11.
Figure 14 is a top view of a plurality of pixels in an organic light emitting display device according to an embodiment of the present invention.
FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14.

With reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In the drawing, the thickness is enlarged to clearly express various layers and regions. Throughout the specification, similar parts are given the same reference numerals. When a part of a layer, membrane, region, plate, etc. is said to be "on" another part, this includes not only being "directly above" the other part, but also cases where there is another part in between. Conversely, when a part is said to be “right on top” of another part, it means that there is no other part in between. Additionally, when referred to as being “above” a reference portion, the direction related to “above” may be the direction opposite to gravity or in the direction of gravity.

The photosensitive resin composition according to an embodiment of the present invention includes nanophosphors, a photopolymerization initiator, a photopolymerization compound, an antioxidant, and a solvent.

First, the nano phosphor according to an embodiment of the present invention may include at least one selected from quantum dots or inorganic phosphors.

Quantum dots included in the nano phosphor according to an embodiment of the present invention may include group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements, group IV compounds, and combinations thereof.

Group II-VI compounds include binary compounds selected from the group consisting of CdO, CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, SrSe, and mixtures thereof; A ternary selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof. bovine compounds; and a tetraelement compound selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof.

Group III-V compounds include binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; A ternary compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, InGaP, InGaN and mixtures thereof; and a tetraelement compound selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaAlNP, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. there is.

Group IV-VI compounds include binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A ternary compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and mixtures thereof; and a quaternary element compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. Group IV elements may be selected from the group consisting of Si, Ge, and mixtures thereof. The group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

In addition, it may include Group III-VI compounds, Group II-III-V compounds, or Group II-III-VI compounds, and combinations thereof.

Group III-VI compounds may include compounds such as GaO, group II-III-V compounds may include compounds such as InZnP, and group II-III-VI compounds may include compounds such as InZnSCdSE, but are not limited thereto.

At this time, the di-element compound, tri-element compound, or quaternary element compound may exist in the particle at a uniform concentration, or may exist in the same particle with a partially different concentration distribution. Additionally, one quantum dot may have a core/shell structure surrounding other quantum dots. The interface between the core and the shell may have a concentration gradient in which the concentration of elements present in the shell decreases toward the center.

For example, quantum dots may have a core/shell structure including a core and a shell covering the core.

The cores are CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, ZnTe, CdSeS, PbS, PbTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, InP, InZnP, InGaP, InGaN, InAs, and It may include one or more materials selected from the group consisting of ZnO, but is not limited thereto. The shell is made of one or more materials selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, SrSe, CdO, CdS, ZnO, InP, InS, GaP, GaN, GaO, InZnP, InGaP, InGaN, InZnSCdSe and HgSe. It may include, but is not limited to this.

Among core/shell quantum dots, the average particle diameter of the core may be 2 nm to 5 nm. Meanwhile, the average thickness of the shell may be 3 nm to 5 nm. Additionally, the average particle diameter of quantum dots may be 5 nm to 10 nm. When the core, shell, and quantum dots satisfy the average particle diameter or average thickness range as described above, not only can they exhibit characteristic behavior as quantum dots, but they can also have excellent dispersibility in a composition for forming a pattern. By variously selecting the particle size of the core, the average thickness of the shell, and the average particle size of the quantum dots within the range described above, the emission color of the quantum dots and/or the semiconducting properties of the quantum dots can be varied in various ways.

In addition, the shape of the quantum dot is not particularly limited to those commonly used in the art, but more specifically, spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, It is preferable to use ones in the form of nanowires, nanofibers, nanoplate-shaped particles, etc.

The photosensitive resin composition according to this embodiment includes fully emitting (lambertian) quantum dots, and when applied to a display device to be described later, the viewing angle of the display device can be improved.

Inorganic phosphors included in the nano phosphor according to an embodiment of the present invention include garnet-based, silicate-based, sulfide-based, oxynitride-based, nitride-based and aluminate. ) may include one or more selected from the system.

Such inorganic phosphors include Y ₃ Al ₅ O ₁₂ :Ce ^{3 +} (YAG:Ce), Tb ₃ Al ₅ O ₁₂ :Ce ^{3 +} (TAG:Ce), (Sr,Ba,Ca) ₂ SiO ₄ :Eu ^{2 +} , (Sr,Ba,Ca,Mg,Zn) ₂ Si(OD) ₄ :Eu ^{2 +} D=F,Cl,S,N,Br, Ba ₂ MgSi ₂ O ₇ :Eu ²⁺ , Ba ₂ SiO ₄ :Eu ^{2+ ,} Ca ₃ (Sc,Mg) ₂ Si3O ₁₂ :Ce ^{3+ ,} (Ca,Sr)S:Eu ²⁺ , (Sr,Ca)Ga ₂ S ₄ :Eu ^{2+ ,} SrSi ₂ O ₂ N ₂ :Eu ^{2+ ,} SiAlON:Ce ³⁺ , β-SiAlON:Eu ²⁺ , Ca- ^α -SiAlON:Eu ^{2+ ,} Ba ₃ Si ₆ ^O ₁₂ N ₂ :Eu ²⁺ , CaAlSiN ₃ :Eu ^{2+ ,} (Sr,Ca)AlSiN ₃ :Eu ²⁺ , Sr ₂ Si ₅ N ₈ :Eu ^{2+ ,} (Sr,Ba)Al ₂ O ₄ : ^{Eu 2+ , (} Mg,Sr)Al ₂ O ₄ :Eu ²⁺ and BaMg ₂ Al ₁₆ O ₂₇ :Eu ^{2+ .}

The nano phosphor containing the above-mentioned quantum dots or inorganic phosphor may be added directly to the photosensitive resin composition as the nano phosphor itself or in the form of a nano phosphor dispersion containing a dispersant, etc.

Here, the dispersant is a substance added to disperse the nano phosphor in a solution to form a stable suspension.

At this time, the dispersant that can be included in the nano phosphor dispersion may be a nonionic dispersant, an ionic dispersant, or a cationic dispersant, and examples include polyalkylene glycol and esters thereof; polyoxyalkylene; Polyhydric alcohol ester alkylene oxide adduct; Alcohol alkylene oxide adduct; These may be used alone or in appropriate combination.

In addition, solvents that may be included in the nano phosphor dispersion include ethylene glycol acetate, ethyl cellosolve, propylene glycol methyl ether acetate, ethyl lactate, polyethylene glycol, cyclohexanone, propylene glycol methyl ether, etc.

The photopolymerization initiator included in the photosensitive resin composition according to an embodiment of the present invention is a substance that serves to initiate the crosslinking and curing reaction between the photosensitive functional groups and the photosensitive material in the photosensitive resin composition, and is acetophenone-based, benzoin-based, and benzophene-based. One or more types selected from rice field-based, triazine-based, oxime-based, and thioxanthone-based photopolymerization initiators can be used.

Acetophenone-based photopolymerization initiators include 4-Phenoxy dichloroacetophenone, 4-t-Butyl dichloroacetophenone, and 4-t-butyl trichloroacetophenone. t-Butyl trichloroacetophenone), 2,2-diethoxyacetophenone (2,2-diethoxyacetophenone), 2-hydroxy-2-methyl-1-phenyl-propan-1-one (2-Hydroxy-2-methyl-1 -phenyl-propane-1-one), 1-(4-Isopropylphenyl)-2-hydroxy-2-methyl-propan-1-one [1-(4-Isopropylphenyl)-2-hydroxy-2-methyl -propane-1-one], 1-(4-dodecylphenyl)-2-hydroxy-2-methylpropane-1-one [1-(4-Dodecylphenyl)-2-hydroxy-2-methylpropane-1- one], 4-(2-hydroxyethoxy)-phenyl-(2-hydroxy-2-propyl)ketone [4-(2-Hydroxyethoxy)-phenyl-(2-hydroxy-2-propyl)ketone], 1-Hydroxy cyclohexyl phenyl ketone, 2-methyl-1- [4-(methylthio)phenyl]-2-morpholino-propan-1-one [2-Methyl-1 - [4-(methylthio)phenyl]-2-morpholino-propane-1-one], etc. may be mentioned, but are not limited thereto.

Benzoin-based photopolymerization initiators include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin isobutyl ether. isobutyl ether), benzyl dimethyl ketal, etc. may be used, but are not limited thereto.

Benzophenone-based photopolymerization initiators include Benzophenone, Benzoyl benzoic acid, Benzoyl benzoic acid methyl ester, 4-Phenylbenzophenone, and hydroxy benzophenone. (Hydroxy benzophenone), 4-Benzoyl-4'-methyl diphenyl sulphide, 3,3'-dimethyl-4-methoxy benzophenone (3,3'-Dimethyl- 4-methoxy benzophenone), etc., but is not limited thereto.

Triazine photopolymerization initiators include 2,4,6-trichloro-s-triazine, 2-phenyl 4,6-bis(trichloromethyl)-s-triazine, and 2-(3',4'-dimethoxy). Styryl)-4,6-bis(trichloromethyl)-s-triazine, 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-(naphtho-1-yl)-4,6- Bis(trichloromethyl)-s-triazine, 2-(4-methoxynaphtho-1-yl)-4,6-bis(trichloromethyl)-s-triazine, 2-4-bis(trichlor Romethyl)-6-piperonyl-s-triazine, 2-4-bis(trichloromethyl)-6-(4-methoxystyryl)-s-triazine, etc. are mentioned.

Oxime-based photopolymerization initiators include O-acyloxime-based compounds, 2-(O-benzoyloxime)-1-[4-(phenylthio)phenyl]-1,2-octanedione, 1-(O-acetyloxime)- 1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]ethanone, O-ethoxycarbonyl-α-oxyamino-1-phenylpropan-1-one, etc. You can use it. Specific examples of the O-acyloxime compounds include 1,2-octanedione, 2-dimethylamino-2-(4-methylbenzyl)-1-(4-morpholin-4-yl-phenyl)-butane- 1-one, 1-(4-phenylsulfanylphenyl)-butane-1,2-dione2-oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octane-1,2-dione2 -Oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octane-1-oneoxime-O-acetate, 1-(4-phenylsulfanylphenyl)-butane-1-oneoxime-O- Acetate, etc. can be mentioned.

Thioxanthone-based photopolymerization initiators include thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, and 2,4-diisopropyl tea. Oxanthone, etc. can be mentioned.

The content of the photopolymerization initiator is not particularly limited and may be selected within an appropriate range considering the initiation performance of the photopolymerization initiator, the size of the photosensitive resin pattern to be formed, etc.

The solvent contained in the photosensitive resin composition according to an embodiment of the present invention is an organic solvent, for example, DMF, 4-hydroxy-4-methyl-2-pentanone ), Ethylene glycol monoethyl ether and 2-Methoxyethanol, chloroform, chlorobenzene, toluene, tetrahydrofuran, dichloromethane, hexane, heptane, octane, nonane and decane. There may be more than one, but it is not limited to this.

The photopolymerization compound included in the photosensitive resin composition according to an embodiment of the present invention participates in crosslinking and curing reactions with the photosensitive compound or with the photosensitive functional group bonded to the surface of the nano phosphor upon exposure to light. Therefore, it can serve to increase the resolution of the photosensitive resin pattern and the durability of the cured product.

The photopolymerizable compound may be used alone or in combination of two or more monofunctional or polyfunctional esters of (meth)acrylic acid having at least one ethylenically unsaturated double bond.

By having an ethylenically unsaturated double bond, the photopolymerizable compound can form a pattern with excellent heat resistance, light resistance, and chemical resistance by causing sufficient polymerization during exposure to light in the pattern formation process.

Specific examples of photopolymerization compounds include ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, neopentyl glycol di( Meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, Bisphenol A di(meth)acrylate, pentaerythritol di(meth)acrylate, penta Erythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol hexa(meth)acrylate, dipentaerythritol di(meth)acrylate, dipentaerythritol tri(meth)acrylate , Dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, Bisphenol A epoxy(meth)acrylate, ethylene glycol monomethyl ether (meth)acrylate, trimethylol propane tri(meth)acrylate Acrylate, tris(meth)acryloyloxyethyl phosphate, novolac epoxy (meth)acrylate, etc. can be mentioned.

The photopolymerizable compound may be used by treating it with an acid anhydride to provide better developability.

Additionally, the photopolymerization compound may be a multifunctional acrylate-based compound, a multifunctional polyalkylene oxide, or a polysiloxane-based polymer containing at least one of an acrylic group and a vinyl group.

Photopolymerization compounds include urethane acrylate, allyloxylated cyclohexyl diacrylate, bis(acryloxyethyl)hydroxyl isocyanurate, and bis(acryloxy neopentyl glycol). ) Adipate [Bis (acryloxy neopentylglycol) adipate], Bisphenol A diacrylate, Bisphenol A dimethacrylate, 1,4-butanediol diacrylate ), 1,4-butanediol dimethacrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate (1,3-butyleneglycol dimethacrylate), dicyclopentanyl diacrylate, diethyleneglycol diacrylate, diethyleneglycol dimethacrylate, dipentaerythritol hexaacrylate (dipentaerythritol hexaacrylate), dipentaerythritol monohydroxy pentacrylate, ditrimethylolpropane tetraacrylate, ethyleneglycol dimethacrylate, glycerol methacrylate (glycerol) methacrylate), 1,6-hexanediol diacrylate, neopentylglycol dimethacrylate, neopentylglycol hydroxypivalate diacrylate, Pentaerythritol triacrylate, pentaerythritol tetraacrylate, phosphoric acid dimethacrylate, polyethyleneglycol diacrylate, polypropylene glycol diacrylate polypropyleneglycol diacrylate, tetraethyleneglycol diacrylate, tetrabromobisphenol A diacrylate, triethyleneglycol divinylether, triglycerol diacrylate ), trimethylolpropane triacrylate, tripropyleneglycol diacrylate, tris(acryloxyethyl)isocyanurate, phosphoric acid triacrylate ), phosphoric acid diacrylate, acrylic acid propargyl ester, vinyl terminated polydimethylsiloxane, diphenylsiloxane-dimethylsiloxane copolymer with a vinyl group at the end (Vinyl terminated diphenylsiloxane-dimethylsiloxane copolymer), Vinyl terminated Polyphenylmethylsiloxane with a vinyl group at the end, Vinyl terminated trifluoromethylsiloxane-dimethylsiloxane copolymer with a vinyl group at the end Vinyl terminated diethylsiloxane-dimethylsiloxane copolymer, Vinylmethylsiloxane, Monomethacryloxypropyl Terminated Polydimethyl siloxane, Monovinyl at the end It may include monovinyl terminated polydimethyl siloxane, or monoallyl or mono trimethylsiloxy terminated polyethylene oxide.

The content of the photopolymerization compound is not particularly limited, and may be appropriately selected in consideration of photocurability (curing speed, cured film state, etc.) and the number of photosensitive functional group bonds on the surface of the nano phosphor.

These photopolymerization compounds include cyanine-based substances, merocyanine-based substances, oxonol-based substances, phthalocyanine-based substances, azo-based substances, fluorene-based substances, thiophene-based substances, diphenylethene-based substances and phenoxazine-based substances to form precise patterns. It may further include one or more selected substances among the substances, but is not limited thereto.

The photosensitive resin composition according to an embodiment of the present invention further includes an antioxidant.

Antioxidants may include one or two or more types selected from phenol-based, phosphorus-based, and sulfur-based compounds.

Phenolic antioxidants include, for example, 2,6-diazetertibutyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl (3,5-dizetertibutyl-4- Hydroxyphenyl) propionate, distearyl (3,5-ditertiary butyl-4-hydroxybenzyl) phosphonate, tridecyl·3,5-ditertiary butyl-4-hydroxybenzylthioacetate, tea Odiethylenebis[(3,5-ditertiary butyl-4-hydroxyphenyl)propionate], 4,4'-thiobis(6-tertiary butyl-m-cresol), 2-octylthio-4, 6-di(3,5-ditertiary butyl-4-hydroxyphenoxy)-s-triazine, 2,2'-methylenebis(4-methyl-6-tertbutylphenol), bis[3,3 -bis(4-hydroxy-3-tertiary butylphenyl)butyric acid] glycol ester, 4,4'-butylidenebis(2,6-ditertiary butylphenol), 4,4'-butylidene Bis(6-tertiary butyl-3-methylphenol), 2,2'-ethylidenebis(4,6-ditertiary butylphenol), 1,1,3-tris(2-methyl-4-hydroxy- 5-tertiary butylphenyl)butane, bis[2-tertbutyl-4-methyl-6-(2-hydroxy-3-tertbutyl-5-methylbenzyl)phenyl]terephthalate, 1,3,5 -Tris(2,6-dimethyl-3-hydroxy-4-tertbutylbenzyl)isocyanurate, 1,3,5-tris(3,5-ditertbutyl-4-hydroxybenzyl)isocyanurate Nullate, 1,3,5-tris(3,5-dize3butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,3,5-tris[(3,5-dize3 Butyl-4-hydroxyphenyl)propionyloxyethyl]isocyanurate, tetrakis[methylene-3-(3', 5'-ditertiary butyl-4'-hydroxyphenyl)propionate]methane, 2 -tertiary butyl-4-methyl-6-(2-acryloyloxy-3-tertiary butyl-5-methylbenzyl)phenol, 3,9-bis[2-(3-tertbutyl-4-hyde Roxy-5-methylhydrocinnamoyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[β-(3-tertiary butyl- 4-hydroxy-5-methylphenyl)propionate], and tocophenol.

Phosphorus antioxidants include, for example, triphenyl phosphite, tris (2,4-di tertiary butylphenyl) phosphite, tris (2,5-di tertiary butylphenyl) phosphite, tris (nonylphenyl) phosphite, Tris (dinonylphenyl) phosphite, tris (mono, dimixed nonylphenyl) phosphite, diphenyl acid phosphite, 2,2'-methylenebis (4,6-dimethylphenyl) octyl phosphite, diphenyl Decyl phosphite, diphenyloctyl phosphite, di(nonylphenyl)pentaerythritol diphosphite, phenyldiisodecyl phosphite, tributyl phosphite, tris(2-ethylhexyl) phosphite, tridecyl phosphite, trilauryl Phosphite, dibutyl acid phosphite, dilauryl acid phosphite, trilauryl trithiophosphite, bis(neopentyl glycol)·1,4-cyclohexanedimethyldiphosphite, bis(2,4-ditertibutylphenyl) )Pentaerythritol diphosphite, bis(2,5-ditertiary butylphenyl)pentaerythritol diphosphite, bis(2,6-ditertiary butyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl) ) Pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tetra(C12-15 mixed alkyl)-4,4'-isopropylidenediphenyl phosphite, bis[2,2'-methylenebis(4,6- diamylphenyl]·isopropylidenediphenylphosphite, tetratridecyl·4,4'-butylidenebis(2-tertiary butyl-5-methylphenol)diphosphite, hexa(tridecyl)·1, 1,3-Tris(2-methyl-5-tertbutyl-4-hydroxyphenyl)butane·triphosphite, tetrakis(2,4-ditertiary butylphenyl)biphenylenediphosphanite, Tris(2) -[(2,4,7,9-tetrakistertbutyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, 9,10-di Hydro-9-oxa-10-phosphaphenanthrene-10-oxide, tris(2-[(2,4,8,10-tetrakis tertbutyldibenzo[d,f][1,3,2] dioxaphosphepin-6-yl)oxy]ethyl)amine, and 2-(1,1-dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1 ,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphospepin-6-yl]oxy]propyl]phenol2-butyl-2-ethylpropanediol·2,4,6- It may contain at least one of tritertiary butylphenol monophosphite.

Examples of sulfur-based antioxidants include dialkylthiodipropionate and β-alkylmercaptopropionic acid ester of polyol.

Here, the dialkylthiodipropionate may be at least one of dilauryl thiodipropionic acid, dimyristyl thiodipropionic acid, myristylstearyl thiodipropionic acid, and distearyl ester thiodipropionic acid. Additionally, the β-alkylmercaptopropionic acid ester of the polyol may be pentaerythritol tetra (β-dodecylmercaptopropionate).

The antioxidant contained in the photosensitive resin composition according to an embodiment of the present invention may have a content of 1 to 5% by weight based on the total weight of solid content of the photosensitive resin composition. Preferably, the content may be 1 to 3% by weight, but is not limited thereto.

The photosensitive resin composition according to an embodiment of the present invention includes the above-described antioxidant and may have excellent heat resistance and chemical resistance. Therefore, it is possible to prevent the nano phosphor from being damaged and quenched by UV or heat generated during the patterning process.

In general, photosensitive resin compositions generate free radicals in post-processing steps performed under conditions such as high temperature, which reduces the heat resistance and chemical resistance of the composition, especially nano phosphors. Accordingly, a phenomenon in which the amount of light is reduced due to damage to the nano phosphor may occur. However, the photosensitive resin composition according to an embodiment of the present invention can have excellent heat resistance and chemical resistance by further including an antioxidant to inactivate free radicals.

Specifically, free radicals generated at high temperatures are highly reactive and react with surrounding oxygen (see Scheme 1), and free radicals that react with oxygen are di-t-butylphenol (di-t), a substituent contained in antioxidants. -butylphenol) and is inactivated by rapidly combining with the hydroxyl group (see Scheme 2).

[Scheme 1]

R·+ O ₂ → ROO·

[Scheme 2]

ROO· + Hydroxyl group of di-t-butylphenol → ROOH

The photosensitive resin composition according to an embodiment of the present invention may further include a light scattering body. The light scatterer scatters incident light to increase the amount of light passing through a color filter layer or color conversion layer made of a photosensitive resin composition, and makes front and side brightness uniform.

The light scattering body may include at least one selected from TiO ₂ , Al ₂ O ₃ and SiO ₂ .

The content or size of the light scattering body is not particularly limited and may be appropriately selected in consideration of the composition of the photosensitive resin composition. At this time, the diameter (nm) of the light scattering body may be 1/10 to 5 times the wavelength (nm) of the light emitted from the layer made of the photosensitive resin composition, and this is to improve the scattering efficiency of the emitted light.

The photosensitive resin composition according to an embodiment of the present invention can be used as a color filter composition.

Hereinafter, experimental results on the light efficiency of the photosensitive resin composition according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1A and 1B are graphs measuring the green light retention rate and light quantity according to the pattern process using a photosensitive resin composition according to an experimental example and a comparative example according to an embodiment of the present invention, and FIGS. 2A and 2B are graphs showing This is a graph measuring the red light retention rate and light quantity according to the progress of the pattern process using the photosensitive resin composition according to the experimental example and comparative example according to an embodiment of the present invention.

In order to measure the light efficiency of a layer formed using the photosensitive resin composition according to an embodiment of the present invention, the light retention rate and light quantity in the green and red wavelength bands were respectively measured after forming the layer through a deposition process of the photosensitive resin composition.

The deposition process involves applying a photosensitive resin composition on a substrate, drying at room temperature (15-25°C) for 4 hours, pre-bake at 100°C for 3 minutes, UV exposure at 400mJ, and 180°C. A hard-bake process was performed at ℃ for 30 minutes.

Comparative examples used photosensitive resin compositions that did not contain antioxidants, Experimental Example 1 used a phenol-based compound alone, Experimental Examples 2 to 5 used a mixture of phenol-based and phosphorus-based compounds, and Experimental Examples 6 and 6, respectively. 7, an experiment was performed on a layer manufactured using a photosensitive resin composition containing an antioxidant mixed with phenol-based, phosphorus-based, and sulfur-based compounds.

Here, each antioxidant used in Experimental Examples 2 to 7 was prepared and tested according to the mixing ratio shown in Table 1 below relative to the total weight of antioxidants, and the phosphorus compound used in Experimental Examples 3 and 5 was Experiments were conducted using different phosphorus compounds, although they were included in the same amount.

Phenolic (% by weight) Delivery (% by weight) Sulfur (% by weight) Experimental Example 2 70 30 - Experimental Example 3 50 50 - Experimental Example 4 30 70 - Experimental Example 5 50 50 - Experimental Example 6 40 50 10 Experimental Example 7 30 50 20

First, referring to FIGS. 1A and 1B, it was confirmed that after the patterning process of the photosensitive resin composition was completed, the light quantity and light retention rate in the green wavelength range were about 80-85% compared to the initial light.

Referring to FIGS. 2A and 2B, the light retention rate in the red wavelength band was measured using the photosensitive resin composition of Experimental Example 1. After the patterning process of the photosensitive resin composition was completed, the light quantity and light retention rate in the red wavelength band were compared to the initial light. It was confirmed that it was about 76%.

On the other hand, referring to the experimental results of the comparative example shown in Figures 1 and 2, after the patterning process of the photosensitive resin composition is completed, the light quantity and light retention rate in the green wavelength band are at the level of 44% compared to the initial light, and the light quantity and light retention rate in the red wavelength band are at the level of 44% compared to the initial light. The retention rate was at a level of 64% compared to the initial light, confirming that the photosensitive resin composition of the present invention containing an antioxidant had excellent light retention rate.

With reference to FIG. 3, the measurement results for color reproduction rate will be examined when using a color filter manufactured using a photosensitive resin composition according to an embodiment of the present invention.

Figure 3 is a graph measuring the color coordinates of a color filter using a photosensitive resin composition according to examples and comparative examples of the present invention.

As shown in Figure 3, when a color filter manufactured using a photosensitive resin composition according to an embodiment of the present invention is used, the color coordinate area is lower than that of a color filter manufactured using a photosensitive resin composition that does not contain an antioxidant. As it becomes wider, you can see that the color reproduction rate is excellent.

Next, a display device including a color filter manufactured using a photosensitive resin composition according to an embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5 .

FIG. 4 is a plan view showing a liquid crystal display device according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4.

4 and 5, the liquid crystal display device according to this embodiment includes a lower display panel 100, an upper display panel 200, and a liquid crystal layer 3 disposed between these two display panels 100 and 200. do.

First, the lower display panel 100 will be described.

A gate line 121 is located on the lower substrate 110 made of transparent glass or plastic.

The gate line 121 transmits the gate signal and extends mainly in the X-axis direction. Each gate line 121 includes a gate electrode 124 protruding from the gate line 121 and a wide end portion 129 for connection to another layer or a gate driver (not shown).

The gate electrode 124 has a double-layer structure consisting of a lower layer 124p and an upper layer 124r. The lower film 124p may be formed of titanium, tantalum, molybdenum, or an alloy thereof, and the upper film 124r may be formed of copper (Cu) or a copper alloy. Additionally, the gate line 121 and the end portion 129 of the gate line may also be formed as a double layer of a lower layer and an upper layer. In this embodiment, the gate line 121 and the gate electrode 124 are described as having a double-layer structure, but they can also be formed as a single-layer structure.

A gate insulating film 140 made of an insulating material such as silicon nitride or silicon oxide is positioned on the gate line 121.

A semiconductor layer 151 made of hydrogenated amorphous silicon or polycrystalline silicon is located on the gate insulating film 140. The semiconductor layer 151 is mainly located in the direction in which the data line 171 extends and includes a projection 154 extending toward the gate electrode 124.

A linear ohmic contact member 161 and an island-shaped ohmic contact member 165 are positioned on the semiconductor layer 151. The linear ohmic contact member 161 has a protrusion 163, and the protrusion 163 and the island-shaped ohmic contact member 165 are paired and disposed on the protrusion 154 of the semiconductor layer 151.

The linear ohmic contact member 161 overlaps the data line 171, the protrusion 163 of the linear ohmic contact member overlaps the source electrode 173, and the island-shaped ohmic contact member 165 overlaps the drain electrode 175. They are located overlapping.

A data line 171, a source electrode 173 connected to the data line 171, and a drain electrode 175 facing the source electrode 173 are positioned on the ohmic contact members 161 and 165 and the gate insulating film 140. do.

The data line 171 transmits a data signal and mainly extends in the Y-axis direction and intersects the gate line 121. The source electrode 173 may extend toward the gate electrode 124 and have a U-shape, but this is only one example and may have various modified shapes.

The drain electrode 175 is separated from the data line 171 and extends upward from the center of the U-shape of the source electrode 173. The data line 171 includes an end portion 179 with a large area for connection to another layer or a data driver (not shown).

Although not shown, the data line 171, source electrode 173, and drain electrode 175 may also have a double-layer structure of an upper layer and a lower layer. The upper film may be formed of copper (Cu) or a copper alloy, and the lower film may be formed of one of titanium (Ti), tantalum (Ta), molybdenum (Mo), and alloys thereof.

The data line 171, the source electrode 173, and the drain electrode 175 may have tapered sides.

The ohmic contact members 161, 163, and 165 exist only between the semiconductor layer 151 below and the data line 171 and drain electrode 175 above it and lower the contact resistance between them. Additionally, the ohmic contact members 161, 163, and 165 may have substantially the same planar pattern as the data line 171, the source electrode 173, and the drain electrode 175.

The protrusion 154 of the semiconductor layer 151 has an exposed portion that is not covered by the data line 171 and the drain electrode 175, including between the source electrode 173 and the drain electrode 175. The semiconductor layer 151 has substantially the same planar pattern as the ohmic contact members 161, 163, and 165 except for the exposed portion of the protrusion 154.

One gate electrode 124, one source electrode 173, and one drain electrode 175 together with the protrusion 154 of the semiconductor layer 151 form one thin film transistor (TFT), The channel of the thin film transistor is formed on the protrusion 154 of the semiconductor layer 151 between the source electrode 173 and the drain electrode 175.

A protective film 180 including a first protective film 180a and a second protective film 180b is positioned on the data line 171, the drain electrode 175, and the exposed protrusion 154 of the semiconductor layer 151. The protective film 180 may be formed of an inorganic insulating material such as silicon nitride or silicon oxide.

A first contact hole 181 exposing the end portion 129 of the gate line 121 is located in the protective film 180 and the gate insulating film 140. Additionally, a second contact hole 182 exposing the end portion 179 of the data line 171 and a third contact hole 185 exposing one end of the drain electrode 175 are located in the protective film 180.

A pixel electrode 191, a first contact auxiliary member 81, and a second contact auxiliary member 82 are positioned on the protective film 180. They may be formed of transparent conductive materials such as ITO or IZO, or reflective metals such as aluminum, silver, chromium, or alloys thereof.

The pixel electrode 191 is physically and electrically connected to the drain electrode 175 through the third contact hole 185, and receives a data voltage from the drain electrode 175.

The first contact auxiliary member 81 is connected to the end portion 129 of the gate line 121 through the first contact hole 181, and the second contact auxiliary member 82 is connected to the second contact hole 182. It is connected to the end part 179 of the data line 171. The first and second contact auxiliary members 81 and 82 supplement the adhesion between the end 129 of the gate line 121 and the external device and the end 179 of the data line 171 and the external device, respectively. and protect them.

Although not shown, an alignment layer may be located on the pixel electrode 191.

Next, the upper display panel 200 will be described.

A light blocking layer 220 is located on one side of the upper substrate 210 facing the lower substrate 110 made of transparent glass or plastic. In other words, as shown, the light blocking layer 220 is located below the upper substrate 210. The light blocking layer 220 serves to block light leakage that may occur between neighboring pixel areas.

A color filter 230 is located on one side of the upper substrate 210 facing the lower substrate 110. In other words, as shown, the color filter 230 is located below the upper substrate 210. The edge portion of the color filter 230 may overlap the light blocking layer 220. The color filter 230 exists mostly in the area surrounded by the light blocking layer 220 and may extend long along the rows of the pixel electrodes 191. Each color filter 230 can display one of the primary colors, such as red, green, and blue.

The color filter 230 may be formed of the photosensitive resin composition according to the embodiment of the present invention described above.

The photosensitive resin composition included in the color filter 230 of the liquid crystal display device according to this embodiment includes quantum dots capable of realizing a wide viewing angle by Lambertian scattering, and the liquid crystal display device The viewing angle can be improved.

In this embodiment, the light blocking layer 220 and the color filter 230 are described as being located on the upper display panel 200, but at least one of the light blocking layer 220 and the color filter 230 is located on the lower display panel 100. You may.

For example, the color filter 230 may be located in place of the second protective film 180b formed on the lower display panel 100, and in this case, the color filter 230 may not be located on the upper display panel 200.

An overcoat layer 250 is located on one side of the color filter 230 and one side of the light blocking layer 220 facing the lower substrate 110. In other words, as shown, the overcoat layer 250 is located below the color filter 230 and the light blocking layer 220. The overcoat layer 250 may be made of an (organic) insulating material, prevents the color filter 230 from being exposed and provides a flat surface. The overcoat layer 250 can be omitted as needed.

The common electrode 270 is located on one side of the overcoat layer 250 facing the lower substrate 110. In other words, the common electrode 270 is located between the overcoat layer 250 and the liquid crystal layer 3. The common electrode 270 is formed of a transparent conductor such as ITO or IZO, and is applied with a common voltage (Vcom).

Although not shown, an alignment film may be located between the common electrode 270 and the liquid crystal layer 3.

The liquid crystal layer 3 contained between the lower display panel 100 and the upper display panel 200 contains liquid crystal molecules having negative or positive dielectric anisotropy, and the liquid crystal molecules have their long axes in the absence of an electric field between the two display panels. It may be oriented perpendicular to the surface of (100, 200).

The pixel electrode 191 and the common electrode 270 together with the liquid crystal layer 3 therebetween form a liquid crystal capacitor to maintain the applied voltage even after the thin film transistor is turned off.

The pixel electrode 191 can overlap with a storage electrode line (not shown) to form a storage capacitor, thereby strengthening the voltage maintenance ability of the liquid crystal capacitor.

Unlike shown in FIGS. 4 and 5, the common electrode 270 may be located on the lower display panel 100, and in this case, the long axis of the liquid crystal molecules included in the liquid crystal layer 3 is in the absence of an electric field. It may be horizontally oriented with respect to the surfaces of the two display panels 100 and 200.

An example of using the photosensitive film resin composition according to an embodiment of the present invention in a color filter of the liquid crystal display device shown in FIGS. 4 and 5 has been described. However, the photosensitive film resin composition according to an embodiment of the present invention is a color filter. Applicable to all display devices that can be used.

Next, the color conversion panel according to an embodiment of the present invention will be described in detail with reference to FIG. 6.

Figure 6 is a cross-sectional view of a color conversion panel according to an embodiment of the present invention.

As shown in FIG. 6, the color conversion panel 30 includes a first color conversion layer 340R, a second color conversion layer 340G, and a transmission layer 340B located on the first substrate 310. do.

The first color conversion layer 340R, the second color conversion layer 340G, and the transmission layer 340B may be formed of the photosensitive resin composition according to the embodiment of the present invention described above.

Here, the first color conversion layer 340R may be a red conversion layer, and the second color conversion layer 340G may be a green conversion layer.

The first color conversion layer 340R and the second color conversion layer 340G may include quantum dots or inorganic phosphors that convert colors, but the transmission layer 340B is made of a transparent polymer without inorganic phosphors or quantum dots. This allows the blue light supplied from the backlight assembly to pass through and display blue color.

Between the first color conversion layer (340R) and the second color conversion layer (340G), between the first color conversion layer (340R) and the transmission layer (340B), and between the second color conversion layer (340G) and the transmission layer (340B) A light blocking member 372 may be positioned between them.

The light blocking member 372 may define an area where the first color conversion layer 340R, the second color conversion layer 340G, and the transmission layer 340B are disposed. The light blocking member 372 serves to prevent color mixing between adjacent color conversion layers 340R and 304G and the transmission layer 340B.

A planar film 355 that provides a flat surface may be positioned on the first and second color conversion layers and the transmission layers 340R, 340G, and 340B, but the flat film 355 may be omitted as needed.

Hereinafter, a liquid crystal display device according to an embodiment of the present invention will be briefly described with reference to FIG. 7.

Figure 7 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

Briefly looking at the display device according to an embodiment of the present invention with reference to FIG. 7, the display device according to an embodiment of the present invention includes a color conversion panel 30, a display panel 10, and a light assembly 500. Includes. Since the color conversion panel 30 included in the display device according to an embodiment of the present invention is the same as the color conversion panel 30 according to the embodiment of FIG. 6 described above, overlapping descriptions will be omitted. However, the color conversion panel 30 may be arranged in contact with the first substrate 310 and the display panel 10 in the same way as the color conversion panel 30 of FIG. 6, but differently, the flat film 355 and the display panel 30 may be arranged in contact with each other. The panels 10 may be arranged in contact with each other.

The display panel 10 located on one side of the color conversion panel 30 may include a liquid crystal panel 50 that displays an image and polarizers 12 and 22 located on both sides of the liquid crystal panel 50. That is, a first polarizer 12 and a second polarizer 22 are positioned on both sides of the liquid crystal panel 50 to polarize light incident from the backlight assembly 500. The first polarizer 12 may face the backlight assembly 500, and the second polarizer 22 may face or be in contact with the color conversion panel 30.

The backlight assembly 500 is located on the lower surface of the first polarizing plate 12 and may include a light source and a light guide plate (not shown) that guides the light generated from the light source toward the display panel 10 and the color conversion panel 30. You can.

As an example, the backlight assembly 500 may include at least one light emitting diode, and the light emitting diode may be a blue light emitting diode or a UV light source. The light source according to an embodiment of the present invention may be an edge-type backlight assembly disposed on at least one side of the light guide plate, or the light source of the backlight assembly 500 may be a direct type located below the light guide plate (not shown), but is limited thereto. However, the position of the light source can be formed in various ways.

Next, a liquid crystal display device, which is an example of the above-described display panel, will be described in detail with reference to FIGS. 8 and 9 .

FIG. 8 is a top view of a plurality of pixels in a liquid crystal display device according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8.

Since the color conversion panel 30 shown in FIGS. 8 and 9 is the same as the color conversion panel 30 according to the embodiment of FIG. 6 described above, overlapping descriptions will be omitted.

The liquid crystal panel 50 located on one side of the color conversion panel 30 faces the lower display panel 100, which includes a thin film transistor and a lower substrate 110 to display an image, and the upper substrate ( It includes an upper display panel 200 including 210) and a liquid crystal layer 3 interposed between the lower display panel 100 and the upper display panel 200.

First and second polarizers 12 and 22 are located on both sides of the liquid crystal panel 50, respectively. At this time, the polarizers 12 and 22 are one of a coated polarizer, an adhesive polarizer, and a wire grid polarizer. More than one may be used. The polarizers 12 and 22 may be placed on one side of the liquid crystal panel 50 in various ways, such as in the form of a film, application form, or attachment form.

A plurality of pixel electrodes 191 may be positioned in a matrix form on the lower substrate 110 included in the lower display panel 100.

On the lower substrate 110, a gate line 121 extending in the (154), a data line 171 and a drain electrode 175 located on the semiconductor layer 154 and extending in the Y-axis direction and including a source electrode 173, and a data line 171 and a drain electrode 175. A pixel electrode 191 is located that is physically and electrically connected to the drain electrode 175 through the protective film 180 and the contact hole 185 located above.

The semiconductor layer 154 located on the gate electrode 124 forms a channel layer in the area exposed by the source electrode 173 and the drain electrode 175, and the gate electrode 124, the semiconductor layer 154, and the source electrode 124 The electrode 173 and the drain electrode 175 form one thin film transistor.

A light blocking layer 220 is located on one side of the upper substrate 210 facing the lower substrate 110. An overcoat layer 250 providing a flat surface may be positioned on the light blocking layer 220 facing the lower substrate 110, and a common electrode 270 may be positioned on the overcoat layer 250 facing the lower substrate 110. . Depending on the embodiment of the invention, the overcoat layer 250 may be omitted. The common electrode 270 may be formed on the lower display panel 100.

The common electrode 270 to which a common voltage is applied forms an electric field with the pixel electrode 191, thereby arranging the liquid crystal materials 31 included in the liquid crystal layer 3.

The liquid crystal layer 3 includes a plurality of liquid crystal materials 31, and the arrangement direction of the liquid crystal materials 31 is controlled by the electric field between the pixel electrode 191 and the common electrode 270. An image can be displayed by controlling the transmittance of light received from the backlight assembly 500 according to the arrangement of the liquid crystal molecules.

In addition, although not shown, an alignment film may be positioned between the pixel electrode 191 and the liquid crystal layer 3 and between the common electrode 270 and the liquid crystal layer 3.

The flattening film 355 of the color conversion panel 30 may be disposed toward the upper substrate 210 of the display panel 10.

With reference to Figure 10, a modification of the embodiment described in Figures 8 and 9 will be described.

FIG. 10 is a cross-sectional view taken along line IX-IX of FIG. 8 according to another embodiment.

In the embodiment described in FIG. 10 , the remaining components except for the upper display panel 200 are the same as compared to the embodiment in FIG. 9 , and therefore descriptions of overlapping components will be omitted.

As shown in FIG. 10, the display panel 10 according to the present embodiment includes a lower display panel 100, a color conversion panel 30 facing the lower display panel 100 and spaced apart, and a liquid crystal material 31 located between them. ) and a liquid crystal layer (3) containing. That is, the display panel 10 according to the embodiment of FIG. 10 is different from the embodiment described in FIGS. 8 and 9, in which the color conversion panel 30 replaces the upper display panel 200 and is a part of the display panel 10. constitutes.

The display panel 10 may further include a first polarizer 12 located on one side of the lower display panel 100 and a second polarizer 22 located on the other side of the lower display panel 100.

Here, the second polarizing plate 22 may be located between the color conversion panel 30 and the liquid crystal layer 3.

Additionally, although not shown, an alignment film may be positioned between the pixel electrode 191 and the liquid crystal layer 3 and between the second polarizing plate 22 and the liquid crystal layer 3.

The liquid crystal display device according to the embodiment of the present invention as described above is located on the display panel and emits light through a color conversion panel including a color conversion layer containing inorganic phosphors or quantum dots that may have a Lambertian scattering state. Light rate and color reproducibility can be improved.

Hereinafter, a liquid crystal display device, which is an embodiment of the present invention, will be described in detail with reference to FIGS. 11 to 13.

FIG. 11 is a top view of a plurality of pixels in a liquid crystal display device according to an embodiment of the present invention, FIG. 12 is a cross-sectional view taken along line XII-XII of FIG. 11, and FIG. 13 is a cross-sectional view taken along line XIII-XIII of FIG. 11. This is a cross-sectional view cut along.

Since the color conversion panel 30 shown in FIGS. 11 to 13 is the same as the color conversion panel 30 according to the embodiment of FIG. 6 described above, overlapping descriptions will be omitted.

11 to 13, a liquid crystal display device according to an embodiment of the present invention includes a display panel 10, a color conversion panel 30, and a backlight assembly 500. The display panel 10 may be located on the backlight assembly 500, and the color conversion panel 30 may be located on the display panel 10.

The display panel 10 according to an embodiment of the present invention may include a liquid crystal panel 50 and first and second polarizers 12 and 22 located on both sides of the liquid crystal panel 50. At this time, the polarizers 12 and 22 may be one or more of a coated polarizer, an adhesive polarizer, and a wire grid polarizer. These polarizers 12 and 22 may be used in various forms such as film form, application form, and attachment form. This method can be located on both sides of the liquid crystal panel 50.

Figure 11 shows a 2 * 2 pixel portion, which is a portion of a plurality of pixels, and in the liquid crystal display device according to an embodiment of the present invention, these pixels may be repeatedly arranged up, down, left, and right.

Referring to FIGS. 11 to 13, the liquid crystal panel 50 according to this embodiment has a gate line 121 located on the substrate 110. The gate line 121 includes a gate electrode 124.

A gate insulating film 140 is located on the gate line 121. On the gate insulating film 140, a semiconductor layer 151 located below the data line 171 and a semiconductor layer 154 located below the source/drain electrodes 173 and 175 and the channel portion of the thin film transistor Q. Located.

A plurality of ohmic contact members may be located on each semiconductor layer 151 and 154 and between the data line 171 and the source/drain electrodes 173 and 175, but are omitted in the drawing.

Data conductors 171 and 173 including a source electrode 173 on each of the semiconductor layers 151 and 154 and the gate insulating film 140, a data line 171 connected to the source electrode 173, and a drain electrode 175. , 175) is located.

The gate electrode 124, the source electrode 173, and the drain electrode 175 together with the semiconductor layer 154 form a thin film transistor (Q), and the channel of the thin film transistor (Q) is the source electrode (173). ) and the drain electrode 175 in the semiconductor layer portion 154.

A first protective film 180a may be positioned on the data conductors 171, 173, and 175 and the exposed portion of the semiconductor layer 154. The first protective layer 180a may include an inorganic insulating material or an organic insulating material such as silicon nitride (SiNx) and silicon oxide (SiOx).

The second protective film 180b and the light blocking layer 220 are located on the first protective film 180a.

First, the light blocking layer 220 is composed of a grid structure with openings corresponding to the image display area and is made of a material that does not transmit light. The second protective film 180b is located in the opening of the light blocking layer 220. The light blocking layer 220 includes a horizontal light blocking member formed along the X-axis direction parallel to the gate line 121 and a vertical light blocking member formed along the Y-axis direction parallel to the date line 171 .

The second protective layer 180b may include an inorganic insulating material or an organic insulating material such as silicon nitride (SiNx) and silicon oxide (SiOx).

A third protective film 180c is formed on the second protective film 180b and the light blocking layer 220 to cover them. The third protective layer 180c may include an inorganic insulating material or an organic insulating material such as silicon nitride (SiNx) and silicon oxide (SiOx).

If a step occurs due to a difference in thickness between the second protective film 180b and the light blocking layer 220, the step can be reduced or eliminated by making the third protective film 180c contain an organic insulating material.

A contact hole 185 exposing the drain electrode 175 is formed in the first to third protective films 180a, 180b, and 180c and the light blocking layer 220.

The pixel electrode 191 is located on the third protective film 180c. The pixel electrode 191 may be made of a transparent conductive material such as ITO or IZO.

The overall shape of the pixel electrode 191 may be square.

The pixel electrode 191 includes a protrusion 197 extending toward the gate line 121, and is physically and electrically connected to the drain electrode 175 through the contact hole 185 in the protrusion 197. A data voltage is applied from the electrode 175.

The description of the thin film transistor Q and the pixel electrode 191 described so far is an example, and the thin film transistor structure and pixel electrode design are not limited to the structure described in this embodiment, but can be modified to form an embodiment of the present invention. The contents according to can be applied.

A lower alignment layer 11 is located on the pixel electrode 191, and the lower alignment layer 11 may be a vertical alignment layer. The lower alignment layer 11 may be formed of at least one of materials commonly used as a liquid crystal alignment layer, such as polyamic acid, polysiloxane, or polyimide.

The upper alignment layer 21 is located in a portion opposite to the lower alignment layer 11, and a plurality of microcavities 305 are formed between the lower alignment layer 11 and the upper alignment layer 21. The liquid crystal layer 3 is located in the plurality of microcavities 305. The liquid crystal layer 3 includes a liquid crystal material 31, and the liquid crystal material 31 may be injected through an inlet 307 formed at an edge of the microcavity 305. A plurality of microcavities 305 may be located along the column direction of the pixel electrode 191, that is, the vertical direction. In this embodiment, the liquid crystal material 31 including liquid crystal molecules and an alignment material forming the alignment layers 11 and 21 may be injected into the microcavity 305 using capillary force. In this embodiment, the lower alignment layer 11 and the upper alignment layer 21 are distinguished only by location, and may be connected to each other as shown in FIG. 12. The lower alignment layer 11 and the upper alignment layer 21 may be formed simultaneously.

The microspace 305 is vertically divided by a plurality of trenches 307FP located in overlapping portions with the gate line 121 to form a plurality of microspaces 305. may be located along the column direction of the pixel electrode 191, that is, the vertical direction. The trench 307FP is formed during the manufacturing process, but a capping layer 390, which will be described later, may be located in the final structure. In addition, the microspace 305 is divided in the It can be formed along the X-axis direction. Each of the plurality of microcavities 305 may correspond to one or more pixel areas, and the pixel areas may correspond to an area that displays the screen.

A common electrode 270 and a lower insulating layer 350 are located on the upper alignment layer 21. The common electrode 270 receives a common voltage and generates an electric field together with the pixel electrode 191 to which the data voltage is applied, thereby changing the direction in which the liquid crystal material 31 located in the microspace 305 between the two electrodes is tilted. decide The common electrode 270 forms a capacitor with the pixel electrode 191 and maintains the applied voltage even after the thin film transistor is turned off. The lower insulating layer 350 may be formed of silicon nitride (SiNx) or silicon oxide (SiO ₂ ).

In this embodiment, the common electrode 270 is described as being located on the liquid crystal layer 3, but in another embodiment, the common electrode 270 is formed below the microcavity 305, making it possible to drive the liquid crystal according to the horizontal electric field mode. do.

A roof layer (Roof Layer) 360 is located on the lower insulating layer 350. The roof layer 360 serves to support the formation of a microspace 305, which is a space between the pixel electrode 191 and the common electrode 270. The roof layer 360 may include photoresist or other organic materials.

An upper insulating layer 370 is located on the roof layer 360. The upper insulating layer 370 may contact the upper surface of the roof layer 360.

In this embodiment, as shown in FIG. 12, a partition wall portion (PWP) is located between horizontally neighboring microcavities 305. The partition wall portion (PWP) may be formed along the Y-axis direction, which is the direction in which the data line 171 extends, and may be covered by the roof layer 360. The partition wall (PWP) is filled with a common electrode 270, a lower insulating layer 350, a roof layer 360, and an upper insulating layer 370. These structures form a partition wall, thereby creating a micro space 305. can be partitioned or defined.

As shown in FIG. 13, the upper insulating layer 370 may cover the side portion of the roof layer 360, and in a modified embodiment, the lower insulating layer 350, the roof layer 360, and the upper insulating layer 370. The side walls may be formed to be substantially identically aligned.

A capping layer 390 is located on the upper insulating layer 370. The capping layer 390 includes an organic material or an inorganic material. In this embodiment, the capping layer 390 may be located not only on the upper insulating layer 370 but also on the liquid crystal injection portion 307FP. At this time, the capping layer 390 may cover the entrance portion 307 of the microcavity 305 exposed by the liquid crystal injection portion 307FP.

The color conversion panel 30 is disposed so that the flat film 355 of the color conversion panel 30 faces the capping layer 390 of the display panel 10.

The display device according to the embodiment of the present invention as described above is located on the display panel and emits light through a color conversion panel including a color conversion layer containing an inorganic phosphor or quantum dot that may have a Lambertian scattering state. Light rate and color reproducibility can be improved.

Hereinafter, an organic light emitting display device, which is an embodiment of the present invention, will be described in detail with reference to FIGS. 14 and 15.

FIG. 14 is a plan view of a plurality of pixels in an organic light emitting display device according to an embodiment of the present invention, and FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14.

An organic light emitting display device according to an embodiment of the present invention may include a color conversion panel 30 and an organic light emitting panel 20.

The color conversion panel 30 shown in FIGS. 14 and 15 is the same as the color conversion panel 30 according to the embodiment of FIG. 6 described above, and redundant description will be omitted.

Referring to FIGS. 14 and 15 , a plurality of gate lines 121 including a first gate electrode 124a and a plurality of gate conductors including a plurality of second gate electrodes 124b are formed on the lower substrate 110. Located.

The gate line 121 transmits the gate signal and extends in the X-axis direction.

The first gate electrode 124a protrudes from the gate line 121 in the Y-axis direction, and the second gate electrode 124b is separated from the gate line 121 and includes a storage electrode line 131.

A gate insulating film 140 is located on the gate conductors 121, 124a, and 124b.

A plurality of first and second semiconductor layers 154a and 154b are located on the gate insulating film 140. The first and second semiconductor layers 154a and 154b are located on the first and second gate electrodes 124a and 124b, respectively.

A plurality of pairs of ohmic contact members 163 and 165 are positioned on the first and second semiconductor layers 154a and 154b, respectively.

On the ohmic contact members 163 and 165 and the gate insulating film 140, a plurality of data lines 171, a plurality of driving voltage lines 172, and a plurality of first and second drain electrodes 175a and 175b are formed. The data conductor is located.

The data line 171 and the driving voltage line 172 transmit data signals and mainly extend in the Y-axis direction and intersect the gate line 121. Each data line 171 includes a plurality of first source electrodes 173a extending toward the first gate electrode 124a.

The driving voltage line 172 transmits a driving voltage and mainly extends in the Y-axis direction and intersects the gate line 121. Each driving voltage line 172 includes a plurality of second source electrodes 173b extending toward the second gate electrode 124b. The driving voltage line 172 overlaps the sustain electrode line 131 and may be connected to each other.

The first and second drain electrodes 175a and 175b are separated from each other and from the data line 171 and the driving voltage line 172. The first source electrode 173a and the first drain electrode 175a face each other around the first gate electrode 124a, and the second source electrode 173b and the second drain electrode 175b are connected to the second gate electrode. They face each other around (124b).

The semiconductor layers 154a and 154b have exposed portions between the source electrodes 173a and 173b and the drain electrodes 175a and 175b.

A protective film 180 is formed on the data conductors 171, 172, 173a, 173b, 175a, and 175b and the exposed portions of the semiconductor layers 154a and 154b.

The protective film 180 has a plurality of contact holes 185a and 185b exposing the first and second drain electrodes 175a and 175b, respectively, and the protective film 180 and the gate insulating film 140 have a second gate electrode 124b. ) is located where the contact hole 184 exposes.

A plurality of pixel electrodes 191 and a plurality of connection members 85 are positioned on the protective film 180.

The pixel electrode 191 is physically and electrically connected to the second drain electrode 175b through the contact hole 185b, and the connecting member 85 is connected to the second gate electrode 124b through the contact holes 184 and 185a. ) and is connected to the first drain electrode 175a.

A partition wall 361 is located on the protective film 180. The partition wall 361 defines the opening 365 by surrounding the edge of the pixel electrode 191 like a dam and is made of an organic insulating material or an inorganic insulating material. The partition wall 361 may also be formed of a photosensitive material containing a black pigment, in which case the partition wall 361 may serve as a light blocking member.

The organic light emitting member 470 is located within the opening 365 between adjacent partition walls 361 . The organic light emitting member 470 of the organic light emitting display device according to this embodiment may include a light emitting layer that emits blue light.

In the case of a general organic light emitting display device, it includes all organic materials that uniquely emit light of one of the three primary colors of red, green, and blue, but the organic light emitting display device according to the present embodiment is similar to the embodiment of FIG. 6 described above. Since the color conversion panel 30 includes a red conversion layer, a green conversion layer, and a transmission layer, and a light emitting layer that emits blue light, each color of red, green, and blue can be expressed.

Additionally, differently from this, when the color conversion panel 30 includes a blue conversion layer instead of a transmission layer, it may include a light emitting layer that emits white light.

The organic light-emitting member 470 may have a multi-layer structure that includes an auxiliary layer (not shown) to improve the luminous efficiency of the light-emitting layer in addition to an emitting layer (not shown) that emits light. The auxiliary layers include an electron transport layer (not shown) and a hole transport layer (not shown) to balance electrons and holes, and an electron injection layer (not shown) to enhance injection of electrons and holes. There is an electron injecting layer (not shown) and a hole injecting layer (not shown).

A common electrode 270 is located on the organic light emitting member 470.

In this organic light emitting display device, the first gate electrode 124a connected to the gate line 121, the first source electrode 173a connected to the data line 171, and the first drain electrode 175a are 1 Together with the semiconductor layer 154a, it forms a switching thin film transistor (Qs), and the channel of the switching thin film transistor (Qs) is the first semiconductor layer (154a) between the first source electrode (173a) and the first drain electrode (175a). is formed in The second gate electrode 124b connected to the first drain electrode 175a, the second source electrode 173b connected to the driving voltage line 172, and the second drain electrode connected to the pixel electrode 191 ( 175b) forms a driving thin film transistor (Qd) together with the second semiconductor layer (154b), and the channel of the driving thin film transistor (Qd) is a second semiconductor between the second source electrode (173b) and the second drain electrode (175b). It is formed in layer 154b. The pixel electrode 191, the organic light emitting member 470, and the common electrode 270 form an organic light emitting diode, with the pixel electrode 191 being the anode and the common electrode 270 being the cathode, or conversely, the pixel electrode 191 being the cathode. , the common electrode 270 becomes the anode. The storage electrode line 131 and the driving voltage line 172 that overlap each other form a storage capacitor (Cst).

The flat film 355 of the color conversion panel 30 is disposed to face the common electrode 270 of the organic light emitting panel 20.

Such an organic light emitting display device can display an image by emitting light upward from the lower substrate 110 toward the color conversion panel 30.

However, unlike the example described above, when the color conversion panel 30 is located below the lower substrate 110 of the organic light emitting panel 20, light is emitted below the lower substrate 110 to display an image. It may be a back-emitting type.

The organic light emitting display device according to an embodiment of the present invention as described above includes a color conversion panel located on the display panel and including a color conversion layer containing an inorganic phosphor or quantum dot that can have a Lambertian scattering state. Through this, light output rate and color reproducibility can be improved.

As described above, according to an embodiment of the present invention, by adding an antioxidant to a photosensitive resin composition containing a nano phosphor, it is possible to prevent the extinction phenomenon due to damage to the nano phosphor that may occur during the process, thereby preventing the display device from being quenched. It has the advantage of excellent light efficiency and color reproducibility.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also possible. falls within the scope of rights.

124: gate electrode 140: gate insulating film
173: source electrode 175: drain electrode
180a: first shield 180b: second shield
230: color filter 10: display panel
12, 22: Polarizer 30: Color conversion panel
310: first substrate 131: maintenance electrode line
11: first alignment layer 21: second alignment layer
110: lower substrate 121: gate line
191: pixel electrode 220: light blocking layer
390: capping layer 270: common electrode
305: Micro space 307FP: Liquid crystal injection part
307: Inlet 31: Liquid crystal molecules
10: Display panel 30: Color conversion panel
372: Light blocking member 340B: Transmissive layer
210: upper substrate 470: organic light emitting member
340R, 340G: Color conversion layer

Claims (33)

Contains nanophosphors, photopolymerization initiator, photopolymerization compound, antioxidant, and solvent,
The antioxidant includes sulfur-based compounds,
The nano phosphor includes at least one of quantum dots and inorganic phosphors,
The quantum dots include group II-VI compounds, group III-V compounds, group III-VI compounds, group IV-VI compounds, group II-III-V compounds, group II-III-VI compounds, group IV elements, and group IV compounds. Contains one or more types selected from
The quantum dot is a photosensitive resin composition having a core-shell structure including a core and a shell covering the core.
delete In paragraph 1:
The antioxidant further includes a phenolic antioxidant,
The phenolic antioxidants include 2,6-dietertiary butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl (3,5-ditertiary butyl-4-hydroxyphenyl) Propionate, distearyl (3,5-ditertiary butyl-4-hydroxybenzyl) phosphonate, tridecyl·3,5-ditertiary butyl-4-hydroxybenzylthioacetate, thiodiethylenebis[ (3,5-ditertiary butyl-4-hydroxyphenyl)propionate], 4,4'-thiobis(6-tertiary butyl-m-cresol), 2-octylthio-4,6-di( 3,5-ditertiary butyl-4-hydroxyphenoxy)-s-triazine, 2,2'-methylenebis(4-methyl-6-tertiary butylphenol), bis[3,3-bis(4 -Hydroxy-3-tertiary butylphenyl)butyric acid] glycol ester, 4,4'-butylidenebis(2,6-ditertiary butylphenol), 4,4'-butylidenebis(6- tertiary butyl-3-methylphenol), 2,2'-ethylidenebis(4,6-ditertiary butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tertiary) Butylphenyl)butane, bis[2-tertiary butyl-4-methyl-6-(2-hydroxy-3-tertiary butyl-5-methylbenzyl)phenyl]terephthalate, 1,3,5-tris(2 ,6-dimethyl-3-hydroxy-4-tertiary butylbenzyl)isocyanurate, 1,3,5-tris(3,5-ditertiary butyl-4-hydroxybenzyl)isocyanurate, 1 ,3,5-tris(3,5-dizertbutyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,3,5-tris[(3,5-dizertbutyl-4- Hydroxyphenyl)propionyloxyethyl]isocyanurate, tetrakis[methylene-3-(3', 5'-ditertiary butyl-4'-hydroxyphenyl)propionate]methane, 2-tertiary butyl -4-methyl-6-(2-acryloyloxy-3-tertbutyl-5-methylbenzyl)phenol, 3,9-bis[2-(3-tertbutyl-4-hydroxy-5- Methylhydrocinnamoyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[β-(3-tertbutyl-4-hydroxy A photosensitive resin composition containing at least one of -5-methylphenyl)propionate] and tocophenol. In paragraph 1:
The antioxidant further includes a phosphorus antioxidant,
The phosphorus-based antioxidants include triphenyl phosphite, tris (2,4-di tertiary butylphenyl) phosphite, tris (2,5-di tertiary butylphenyl) phosphite, tris (nonylphenyl) phosphite, and tris (dinonyl). Phenyl) phosphite, tris (mono, dimixed nonylphenyl) phosphite, diphenyl acid phosphite, 2,2'-methylenebis (4,6-ditertiary butylphenyl) octyl phosphite, diphenyldecyl phosphite, Diphenyloctyl phosphite, di(nonylphenyl)pentaerythritol diphosphite, phenyl diisodecyl phosphite, tributyl phosphite, tris(2-ethylhexyl) phosphite, tridecyl phosphite, trilauryl phosphite, di Butyl acid phosphite, dilauryl acid phosphite, trilauryl trithiophosphite, bis(neopentyl glycol)·1,4-cyclohexanedimethyldiphosphite, bis(2,4-ditertiary butylphenyl)pentaerythritol depot Spite, bis(2,5-ditertibutylphenyl)pentaerythritol diphosphite, bis(2,6-ditertibutyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite Spite, distearyl pentaerythritol diphosphite, tetra(C12-15 mixed alkyl)-4,4'-isopropylidenediphenyl phosphite, bis[2,2'-methylenebis(4,6-diamylphenyl) ]·Isopropylidenediphenylphosphite, tetratridecyl·4,4'-butylidenebis(2-tertiary butyl-5-methylphenol)diphosphite, hexa(tridecyl)·1,1,3- Tris(2-methyl-5-tertbutyl-4-hydroxyphenyl)butane·triphosphite, tetrakis(2,4-ditertbutylphenyl)biphenylenediphosphanite, Tris(2-[(2 ,4,7,9-Tetrakistertbutyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, 9,10-dihydro-9- Oxa-10-phosphaphenanthrene-10-oxide, tris(2-[(2,4,8,10-tetrakis tertbutyldibenzo[d,f][1,3,2]dioxaphosphepine -6-yl)oxy]ethyl)amine and 2-(1,1-dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1,1-dimethylethyl) ) dibenzo[d,f][1,3,2]dioxaphospepin-6-yl]oxy]propyl]phenol 2-butyl-2-ethylpropanediol·2,4,6-trizet-butylphenol A photosensitive resin composition comprising at least one of monophosphites. In paragraph 1:
The photosensitive resin composition wherein the sulfur-based antioxidant includes at least one of dialkylthiodipropionate and β-alkylmercaptopropionic acid ester of polyol. In paragraph 1:
The photosensitive resin composition wherein the antioxidant has a content of 1 to 5% by weight based on the total weight of solids of the photosensitive resin composition.
delete In paragraph 1:
The core is CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, ZnTe, CdSeS, PbS, PbTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, InP, InZnP, InGaP, InGaN, InAs and at least one compound selected from ZnO,
The shell includes at least one compound selected from CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, SrSe, CdO, CdS, ZnO, InP, InS, GaP, GaN, GaO, InZnP, InGaP, InGaN, InZnSCdSe and HgSe A photosensitive resin composition. In paragraph 1:
The inorganic phosphor is a photosensitive phosphor containing at least one selected from garnet-based, silicate-based, sulfide-based, oxynitride-based, nitride-based, and aluminate-based. Resin composition. In paragraph 9:
The inorganic phosphor is Y ₃ Al ₅ O ₁₂ :Ce ^{3 +} (YAG:Ce), Tb ₃ Al ₅ O ₁₂ :Ce ^{3 +} (TAG:Ce), (Sr,Ba,Ca) ₂ SiO ₄ :Eu ²⁺ , (Sr,Ba,Ca,Mg,Zn) ₂ Si(OD) ₄ :Eu ^{2 +} D=F,Cl,S,N,Br, Ba ₂ MgSi ₂ O ₇ :Eu ²⁺ , Ba ₂ SiO ₄ : Eu ^{2 +} , Ca ₃ (Sc,Mg) ₂ Si3O ₁₂ :Ce ^{3 +} , (Ca,Sr)S:Eu ^{2 +} , (Sr,Ca)Ga ₂ S ₄ :Eu ²⁺ , SrSi ₂ O ₂ N ₂ :Eu ^{2+ ,} SiAlON:Ce ³⁺ , β-SiAlON:Eu ²⁺ , Ca- ^α -SiAlON:Eu ^{2+ ,} Ba ₃ Si ₆ ^O ₁₂ N ₂ :Eu ²⁺ , CaAlSiN ₃ :Eu ^{2+ ,} ( Sr,Ca)AlSiN ₃ :Eu ²⁺ , Sr ₂ Si ₅ N ₈ :Eu ^{2+ ,} (Sr,Ba)Al ₂ O ₄ : ^{Eu 2+ , (} Mg,Sr)Al ₂ O ₄ :Eu ²⁺ and ^A photosensitive resin composition comprising at least one selected from BaMg ₂ Al ₁₆ O ₂₇ :Eu ²⁺ . In paragraph 1:
The photosensitive resin composition further includes a dispersant. In paragraph 11:
The photosensitive resin composition further includes a light scattering body. In paragraph 12:
The light scattering body is a photosensitive resin composition comprising at least one selected from TiO ₂ , Al ₂ O ₃ and SiO ₂ . lower substrate,
A thin film transistor located on the lower substrate,
A pixel electrode connected to the thin film transistor,
an upper substrate facing the lower substrate,
It includes a color filter located between the lower substrate and the upper substrate,
The color filter contains nanophosphors and antioxidants,
The antioxidant is a display device comprising a photosensitive resin composition containing a sulfur-based compound. In paragraph 14:
A display device wherein the nano phosphor includes at least one of quantum dots and inorganic phosphors. In paragraph 15:
The display device wherein the antioxidant has a content of 1 to 5% by weight based on the total solid weight of the photosensitive resin composition. In paragraph 15:
The quantum dots include group II-VI compounds, group III-V compounds, group III-VI compounds, group IV-VI compounds, group II-III-V compounds, group II-III-VI compounds, group IV elements, and group IV compounds. Contains one or more types selected from
The quantum dot is a display device having a core-shell structure including a core and a shell covering the core. In paragraph 15:
The inorganic phosphor is a display device containing at least one selected from garnet-based, silicate-based, sulfide-based, oxynitrides, nitride-based, and aluminate-based . In paragraph 15:
A display device wherein the photosensitive resin composition further includes a dispersant. In paragraph 19:
The display device wherein the photosensitive resin composition further includes a light scattering body. first substrate,
A plurality of color conversion layers and a transmission layer located on the first substrate,
It includes a light blocking member positioned between adjacent color conversion layers among the plurality of color conversion layers and between one of the plurality of color conversion layers and the transmission layer,
The color conversion layer contains nanophosphors and antioxidants,
The antioxidant is a color conversion panel containing a sulfur-based compound. In paragraph 21:
The nano phosphor is a color conversion panel comprising at least one of quantum dots and inorganic phosphors. In paragraph 22:
The antioxidant is a color conversion panel having a content of 1 to 5% by weight based on the total weight of solids of the photosensitive resin composition. In paragraph 22:
The photosensitive resin composition is a color conversion panel further comprising at least one of a dispersant and a light scattering agent. a display panel, and
It includes a color conversion panel located above the display panel,
The color conversion panel is,
first substrate,
A plurality of color conversion layers and a transmission layer located on one side of the first substrate facing the display panel,
It includes a light blocking member positioned between adjacent color conversion layers among the plurality of color conversion layers and between one of the plurality of color conversion layers and the transmission layer,
The color conversion layer contains nanophosphors and antioxidants,
A display device wherein the antioxidant includes a sulfur-based compound. In paragraph 25:
The display panel is,
lower substrate;
A thin film transistor located on the lower substrate,
A display device including a pixel electrode connected to the thin film transistor. In paragraph 26:
an upper substrate facing away from the lower substrate, and
A display device further comprising a liquid crystal layer positioned between the lower substrate and the upper substrate. In paragraph 26:
A roof layer facing the pixel electrode,
A display device further comprising a liquid crystal layer located in a plurality of micro spaces between the pixel electrode and the roof layer. In paragraph 26:
An organic light emitting member located on the pixel electrode, and
A display device further comprising a common electrode positioned on the organic light emitting member.
In paragraph 1:
A photosensitive resin composition wherein the antioxidant further includes one or more of phenol-based and phosphorus-based compounds. In paragraph 14:
A display device wherein the antioxidant further includes one or more of phenol-based and phosphorus-based compounds. In paragraph 21:
The antioxidant is a color conversion panel further comprising one or more of phenol-based and phosphorus-based compounds. In paragraph 25:
A display device wherein the antioxidant further includes one or more of phenol-based and phosphorus-based compounds.