KR20180054249A - Quantum dot dispersion, self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same - Google Patents

Abstract

A quantum dot dispersion according to the present invention comprises a quantum dot and a solvent, wherein the solvent does not contain a halogenated hydrocarbon solvent, aromatic hydrocarbon solvents, and an aliphatic hydrocarbon-based solvent, and satisfies conditions of the Hansen solubility parameter of a specific condition.

Description

TECHNICAL FIELD [0001] The present invention relates to a quantum dot dispersion, a self-emitting photosensitive resin composition, a color filter manufactured using the same, and an image display device using the same. BACKGROUND ART [0002]

The present invention relates to a quantum dot dispersion, a self-luminescent photosensitive resin composition, and a color filter manufactured using the same, which are excellent in dispersion characteristics and harmless to the human body.

A color filter is a thin film type optical component that extracts three colors of red, green, and blue in white light and makes it possible in fine pixel units. The size of one pixel is several tens to several hundreds of micrometers. Such a color filter has a black matrix layer formed in a predetermined pattern on a transparent substrate so as to shield a boundary portion between each pixel and a plurality of colors (typically red (R), green (G) and Blue (B)) are arranged in a predetermined order in this order.

In recent years, as a method of implementing a color filter, a pigment dispersion method using a pigment dispersion type photosensitive resin has been applied. However, in a process in which light emitted from a light source passes through a color filter, a part of light is absorbed by a color filter, The efficiency is lowered and the color reproduction is deteriorated due to the characteristics of the pigment contained in the color filter.

Particularly, since color filters are used in various fields including various image display devices, they are required not only to have excellent pattern characteristics but also to have high color reproducibility and excellent performance such as high luminance and high contrast ratio. In order to solve such problems, A method of manufacturing a color filter using the self-luminescent photosensitive resin composition has been proposed.

Korean Patent Laid-Open Publication No. 2006-0084668 discloses a light-emitting diode that includes a quantum dot and a solid-state support for fixing the quantum dot, thereby maintaining excellent light-emitting efficiency.

However, in Korean Patent Publication No. 2006-0084668, as a dispersion solvent for dispersing the quantum dot fluorescent substance, a solvent harmful to human body such as chloroform, toluene, hexane and the like excellent in dispersibility is used. The solvents described above are volatile organic compounds or carcinogenic or neurotoxic and have a high risk of abnormal reproductive function and require strict management of the operator's handling environment.

Therefore, in order to use such a quantum dot, it is necessary to remove the solvent harmful to human body through drying or remove the dispersing solvent, and there is no risk of the reproductive dysfunction, In this process, the quantum efficiency is lowered and the emission characteristics of the color filter or the image display device to be manufactured are deteriorated.

Therefore, there is a demand for the development of a quantum dot dispersion which exhibits excellent dispersibility to quantum dots, has excellent luminescence properties of a color filter or an image display device manufactured using the same, and does not contain harmful components to the human body.

Korean Patent Publication No. 2006-0084668 (2006.07.25)

Disclosed is a quantum dot dispersion which is harmless to human body and excellent in dispersibility, and a self-luminescent photosensitive resin composition containing the same.

It is another object of the present invention to provide a color filter and an image display device which are excellent in luminescence property and are manufactured using the above-described quantum dot dispersion and self-luminescent photosensitive resin composition.

In order to achieve the above object, a quantum dot dispersion according to the present invention comprises a quantum dot and a solvent, wherein the solvent satisfies a condition of a Hansen solubility parameter of the following formula (1), and is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic hydrocarbon-based solvent.

[Equation 1]

δ _d ≥ 14

2 < / _{RTI >}< _{RTI ID =}

2 ≤ δ _h ≤ 8

(In the above formula (1)

δ _d is a dispersion component, δ _p is a polar component, and δ _h is a hydrogen bonding component.

The present invention also relates to the above-described quantum dot dispersion; And a self-luminescent photosensitive resin composition further comprising at least one selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an additional solvent and an additive.

Further, the present invention provides a color filter including the above-mentioned self-luminescent photosensitive resin composition cured product and an image display apparatus including the same.

 The quantum dot dispersion of the present invention is excellent in dispersion characteristics and has an advantage of not containing a human toxic substance, and the self-luminescent photosensitive resin composition containing the same also has the above advantages.

In addition, the color filter manufactured using the self-luminescent photosensitive resin composition of the present invention and the image display apparatus including the color filter have an advantage of excellent luminescence characteristics.

Hereinafter, the present invention will be described in more detail.

When a member is referred to as being " on "another member in the present invention, this includes not only when a member is in contact with another member but also when another member exists between the two members.

Whenever a part is referred to as "including " an element in the present invention, it is to be understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

< Qdot  Dispersion>

One aspect of the invention relates to a quantum dot dispersion. Specifically, one embodiment of the present invention includes a quantum dot and a solvent, wherein the solvent satisfies the condition of the Hansen solubility parameter of the following formula (1), and is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic hydrocarbon-based solvent.

[Equation 1]

δ _d ≥ 14

2 &lt; / _{RTI &gt;}&lt; _{RTI ID =}

2 ≤ δ _h ≤ 8

(In the above formula (1)

δ _d is a dispersion component, δ _p is a polar component, and δ _h is a hydrogen bonding component.

The quantum dot dispersion according to an aspect of the present invention includes quantum dots. The quantum dot may be referred to as a nano-sized semiconductor material. The atoms form molecules, and the molecules form aggregates of small molecules called clusters to form nanoparticles. When these nanoparticles are semiconductor, they are called quantum dots. The quantum dots emit energy according to the corresponding energy band gap of the quantum dots when the quantum dots reach the excited state from the outside.

A color filter made of a self-luminescent photosensitive resin composition containing a quantum dot dispersion according to an embodiment of the present invention may emit light (luminescence) by light irradiation by including the quantum dots.

In a typical image display device including a color filter, white light is transmitted through the color filter to realize color. In this process, a part of light is absorbed by the color filter, so that the light efficiency is lowered. However, in the case of including the color filter made of the self-luminescent photosensitive resin composition according to the present invention, since the color filter is self-luminescent by the light of the light source, more excellent light efficiency can be realized, The color reproducibility is better and light is emitted in all directions due to the optical luminescence, so that there is an advantage that the viewing angle can also be improved.

The quantum dot is not particularly limited as long as it is a quantum dot particle capable of emitting light by stimulation by light. For example, II-VI group semiconductor compounds; III-V semiconductor compound; Group IV-VI semiconductor compounds; Group IV elements or compounds containing them; And combinations thereof, and they may be used singly or in combination of two or more.

Specifically, the II-VI group semiconductor compound is selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; Trivalent compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and mixtures thereof; And a silane compound selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

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

The IV-VI group semiconductor compound is selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A triple compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And a silane compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. However, the present invention is not limited thereto.

Although not limited thereto, the Group IV element or the compound containing it may be an elemental compound selected from the group consisting of Si, Ge, and mixtures thereof; And these elemental compounds selected from the group consisting of SiC, SiGe, and mixtures thereof.

The quantum dot has a single homogeneous structure; A dual structure such as a core-shell, gradient structure or the like; Or a mixed structure thereof.

Specifically, in the dual structure of the core-shell, the material forming each core and the shell may be made of the different semiconductor compounds mentioned above. For example, the core may include, but is not limited to, one or more materials selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS and ZnO. The shell may include at least one material selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe.

The quantum dot may be synthesized by, but not limited to, a wet chemical process, a metal organic chemical vapor deposition (MOCVD) process, or a molecular beam epitaxy process (MBE) process .

In the wet chemical process, a precursor material is added to an organic solvent to grow particles. When the crystal grows, the organic solvent is naturally coordinated on the surface of the quantum dot crystal to act as a dispersing agent to control the crystal growth. Therefore, it is easier and cheaper to process the nano-particles than the vapor deposition method such as the organic metal chemical vapor deposition process or the molecular beam epitaxy It is preferable to produce the quantum dot according to the present invention by using the wet chemical process.

In one embodiment of the present invention, the quantum dot may further comprise an organic ligand. The organic ligand may bind to the surface of the quantum dot to stabilize the quantum dot. The organic ligands are not limited to the present invention but include, for example, C5 to C20 alkylcarboxylic acids, alkenylcarboxylic acids or alkynylcarboxylic acids; In view of improving the stability by effectively protecting the surface of the quantum dots, it is possible to use a C5 to C20 alkylcarboxylic acid, an aliphatic carboxylic acid, an aliphatic carboxylic acid, Alkenylcarboxylic acids or alkynylcarboxylic acids; Thiol, and phosphoric acid.

The organic ligand may cover at least 5% of the total area of the quantum dots.

The organic ligand may be contained in the commercially available form of the quantum dot dispersion. If the organic ligand is not included in the quantum dot dispersion, the organic ligand may be added directly to the quantum dot dispersion. Alternatively, the organic ligand may be directly added to the quantum dot dispersion The content may be added in an amount of 0.1 to 10 moles per mole of the quantum dot.

According to one embodiment of the present invention, the quantum dot may be contained in an amount of 5 to 70% by weight, preferably 10 to 65% by weight, more preferably 15 to 60% by weight, based on 100% by weight of the entire solid content of the quantum dot dispersion. have. When the quantum dot is included within the above range, it is possible to provide a self-emitting photosensitive resin composition having excellent photosensitivity. When the quantum dots are included in the quantum dots below the above range, the photosensitive properties may be somewhat lowered. When the quantum dots are included in the quantum dots beyond the above range, the quantities of constituents such as alkali soluble resins and photopolymerizable compounds, Is relatively small, there is a problem that the manufacture of the color filter may be somewhat difficult. Therefore, it is preferable that the color filter is included within the above range.

The quantum dot dispersion according to the present invention has the advantage that the quantum dots can be dispersed evenly by including a solvent satisfying the condition of the Hansen solubility parameter of the following formula (1), and a halogenated hydrocarbon solvent such as chloroform or dichloromethane harmful to the human body; Aromatic hydrocarbon solvents such as benzene or toluene; And aliphatic hydrocarbon-based solvents such as N-hexane are not included, and thus there is an advantage that workers who handle them can be prevented from being exposed to dangerous environments such as carcinogenicity, neurotoxicity, and reproductive dysfunction.

 [Equation 1]

δ _d ≥ 14

2 &lt; / _{RTI &gt;}&lt; _{RTI ID =}

2 ≤ δ _h ≤ 8

(In the above formula (1)

δ _d is a dispersion component, δ _p is a polar component, and δ _h is a hydrogen bonding component.

According to one embodiment of the present invention, the solvent may specifically include one or more selected from the group consisting of ethers and esters having 6 to 10 carbon atoms, and in this case, the dispersibility is improved, There is an advantage that the luminescence intensity of the luminescent photosensitive resin composition is increased.

Specific examples of the solvent include methyl isoamyl ketone, diisobutyl ketone, diethyl carbonate, ethyl butyrate, ethyl isobutyrate, tert-butyl acetate, isopropyl propionate, methyl- Butyl acetate, butyl acetate, methyl pivalate, sec-butyl propionate, n-butyl propionate, n-butyl propionate, 2-methyl Butyl acetate, ethyl 2-methyl butyrate, methyl 2-methyl pentanoate, 2-pentyl acetate, neopentyl acetate, 3-methyl butan-2-ylacetate, isopropyl isobutyrate, propyl isobutyrate, Methyl 3-methyl pentanoate, ethyl pentanoate, methyl 4-methyl pentanoate, methyl hexanoate, isoamyl acetate, pentyl Dimethylbutanoic acid methyl ester, ethyl pivalate, tert-amyl acetate, tert-butyl propionate, methyl 3,3-dimethylpyrrolidone, Propyl 2-methyl butanoate, ethyl hexanoate, isopropyl 2-methyl butanoate, isobutyl acetate, isobutyl acetate, isobutyl acetate, isobutyl acetate, isobutyl acetate, 3-methylbutylate, 3-methylpentyl 3-acetate, 3-hexyl acetate, 2-methylbutyl acetate, 2-methylbutyl acetate, Ethyl 2-methylbutylate, ethyl 3-methylpentanoate, ethyl 2,3-dimethylbutanoate, 2,3-dimethyl-2- Butyl acetate, 2-ethylbutyl (2,2-dimethyl-butyl ester), 2,3-dimethylbutyl acetate, 3-methyl-1-pentyl acetate, 3,3-dimethylbutyl acetate, n-butyl isobutyrate, iso Butyl propionate, hexyl acetate, propyl 3-methyl butanoate, methyl heptanoate, isopropyl 3-methyl butanoate, isobutyl butyrate, sec-butyl isobutyrate, propyl penta Methyl pentanoate, methyl 5-methylhexanoate, methyl 2-ethyl-2-methyl butyrate, 2,2-dimethyl- Ethyl propyl pivalate, propyl 2,2-dimethyl propanoate, 2,2-dimethyl-1-propanol propanoate, ethyl 3,3- Dimethyl butanoate, 2-methyl-3-pentylacetate Methyl-2-pentyl acetate, tert-butyl 2-methyl propanoate, 2,3-dimethyl-valeric acid methyl ester, 2-ethyl- Ethyl butyrate, methyl 2-methyl caproate, 2-methylpentan-2-yl acetate, tert-butyl butyrate, 3-ethyl- valeric acid methyl ester, ethyl 2-ethyl butanoate, Propionate, methyl 2,3,3-trimethylbutanoate, 3,3-dimethylpentanoic acid methyl ester, tert-amyl propanoate, methyl 2,4-dimethyl pentanoate, methyl 2,2,3 Methyl-pentyl-2-acetate, methyl 4,4-dimethyl pentanoate, methyl 3,4-dimethyl pentanoate, valereic acid isobutyl ester, 2-methylbutyl butanoate , Valeric acid sec-butyl ester, 2-pentyl butanoate, 2-methylpropyl 2-methyl butanoate n-butyl 2-methyl 1-methylhexyl acetate, 2-methyl-butyric acid sec-butyl ester, 2-methylpropanoic acid 2-methylpropanoic acid Methyl hexanoate, ethyl 2-methylhexanoate, 1-heptyl acetate, methyl 3-methylheptanoate, 1,1,2,2-tetramethylpropyl acetate, 1-acetic acid (2-ethyl-2-methyl-butyl ester), acetic acid- (3,3-dimethyl-pentyl ester), acetic acid- (1, 3-methyl-butyl ester), 2,4-dimethyl-3-acetoxypentane, acetic acid- (2-ethyl- (4-methyl-hexyl ester), isobutyryl acid- (1,2-dimethyl-propyl ester), 4-methyl-bareric acid propyl ester, 4-methyl- Methyl pentanoate, isobutyryl acid isopentyl ester, butyl pentanoate, propyl hexanoate, hexyl propionate, methyl octanoate, 5- Butyl 3-methylbutanoate, 2-ethyl-3-methyl-bareric acid methyl ester, methyl 2-isopropyl (meth) acrylate, methyl isobutyl acetate, ethyl isoamyl acetate, pentyl butyrate, ethyl heptanoate, isopropyl hexanoate, Methyl-butyryl acid ethyl ester, 2-ethyl-bareric acid ethyl ester, methyl 2-ethylhexanoate, ethyl 2,4-dimethylpentanoate, Methyl-2,5-dimethylhexanoate, acetic acid- (1-ethyl-3-methyl-butyl ester), 4-heptyl acetate, 4- Acetic acid, 2,2-diethyl-butyric acid methyl ester, Ethyl-2-methyl-bareric acid methyl ester, 2-ethyl-2-methylbutyric acid, 2-ethyl-2-methylbutyric acid, Ethylhexanoic acid ethyl ester, ethyl 2,2-dimethyl pentanoate, 2,2-dimethyl-hexanoic acid methyl ester, 2,2-dimethyl-butyric acid propyl ester, pivalic acid tert- butyl ester, isobutyl pivalate (2-dimethyl-pentyl ester), 2,4,4-trimethyl-bareric acid methyl ester, acetic acid- (1-ethyl- (3, &lt; / RTI &gt; 3-dimethyl-phenyl) Dimethyl-butyl ester), isopropyl 3,3-dimethyl butanoate, 3,3-dimethyl-butyric acid propyl ester, neopentyl 2 Methyl propanoate, neopentyl butanoate, tert-butyl 3-methyl butanoate, tert-butyl pentanoate, 3,3,4-trimethyl-bareric acid methyl ester, 4,5- Ethyl 4,4-dimethyl pentanoate, 3,4-dimethyl-pentanooic acid ethyl ester, acetic acid- (1-isopropyl-butyl ester), 2-propyl 2-methylpentanoate , Methyl 6-methylheptanoate, isopropyl 2-ethylbutyrate, 2-acetoxy-4-methyl-hexane, 2,2,3,3-tetramethylbutanoate, 4-methyl- Ester, methyl 4-ethylhexanoate, ethyl 2,3,3-trimethylbutanoate, 2,2-dimethyl-pentanol- (1) -acetate, 2,4- Methyl-2-hexyl acetate, 4,4-dimethylpentyl acetate, pentylisobutanoate, methyl 2-methylheptanoate, butan-2-yl 2,2-dimethylpropanoate, (2,4-dimethylmethyl ester), 2,2,3-trimethylbutanoic acid ethyl ester, 2-methyl (2-methylpentanoic acid) ester ethyl ester, Ethyl-4-methyl-pentanone acid methyl ester, 3-ethyl-4-methylpentanoic acid methyl ester, Methyl-2-methyl-2-methylpropanoate, 3-ethyl-3-methyl-pentanone acid methyl ester, methyl Ethyl-3-ethyl-pentanoate, methyl 2,2,3-trimethylpentanoate, methyl 2-ethyl-3,3 3-methylbutyl acetate, 2-methyl-3-methylbutyl propanoic acid ester, 3-methoxy-1-pentyl propionate, 2- Pentyl 2-methyl Butyl 2-methylbutanoate, methyl 5,5-dimethylhexanoate, 3,3-dimethyl 2-butylpropionate, 1-ethylbutyl propanoate, 2-methyl- Propyl 2-methylvalerate, sec-amylvalerate, sec-butyl hexanoate, 2-methylbutyl isobarylate, pentanoid acid 2-methylbutyl ester, 2,2,3- 2-methyl-3-hexyl acetate, 2-methyl-1-butyl 2-methyl butanoate, 3-methyl-2-methylbutanoate, Methylhexyl 2-methylbutanoate, methyl 2,6-dimethylheptanoate, 2-octyl acetate, 1-ethylhexyl acetate, acetic acid- (1-isopropyl-2,2-dimethyl- , Acetic acid- (2-ethyl-3,3-dimethyl-butyl ester), acetic acid- (2,2,3-trimethyl- pentyl ester), acetic acid- (2,2,3,3- Tetram Butyl ester), acetic acid- (1,2,2,3-tetramethyl-butyl ester), acetic acid- (2-isopropyl- Ethyl-hexyl ester), acetic acid- (2,2-diethyl-butyl ester), 3-methyl-bareric acid sec-butyl ester, isopentyl 3-methyl butanoate, isopropyl heptanoate, 4 Methyl-heptanoic acid ethyl ester, 3-methyl butyl pentanoate, butyl hexanoate, n-pentyl n-pentanoate, n-propyl heptanoate, 5 Methyl-heptanoic acid ethyl ester, ethyl 6-methylheptanoate, hexyl butyrate, octanoic acid ethyl ester, methyl 6-methyl octanoate, heptyl propionate, nonanoic acid methyl ester, 1-octyl acetate , 2,2,3,3-tetramethyl-butyric acid ethyl ester, acetic acid- (1-ethyl-2,2-dimethyl- Butyl ester), acetic acid- (1-isopropyl-pentyl ester), acetic acid- (1,2-dimethylhexyl ester) (1-ethyl-3-methyl-pentyl ester), 2,3,5-trimethyl-hexanoic acid methyl ester, acetic acid- ( Methyl-pentyl ester), propionic acid- (1-ethyl-2,2-dimethyl-propyl ester), ethyl 2,2-diethyl butanoate, 2,2,3- Ethyl-3,3-dimethyl-butyl ester, butyl 2,2-dimethyl butyrate, 3-methyl-2-propyl-bareric acid methyl ester, 2- Methyl-heptanoic acid ethyl ester, methyl 2-methyl octanoate, butyryl acid- (1,3-dimethyl-butyl ester), 3-ethyl-hexanoic acid ethyl ester, Rick Acid Ester, ethyl 3,5-dimethylhexanoate, 3,3-dimethyl-bareric acid propyl ester, 2,2,4,4-tetramethyl-pentanooic acid mille ester, ethyl 2,2-dimethyl- Ethyl-4-methyl-bareric acid ethyl ester, ethyl 2-propyl pentanoate, methyl 2-propyl hexanoate, ethyl 2-ethylhexaate, (1, 1-diethyl-butyl ester), 2,5-dimethyl-hexanoic acid ethyl ester, ethyl 4,5-dimethylhexanoate, acetic acid- Butyl ester), acetic acid- (1-ethyl-4-methyl-pentyl ester), acetic acid- (1-methyl-1-propyl- butyl ester), isobaric acid tert- Ethyl-heptanoic acid methyl ester, acetic acid- (1,1,4-trimethyl-pentyl ester), acetic acid- (1,5-dimethyl- Methyl-heptanoic acid ethyl ester, 3,3,5-trimethyl-hexanoic acid methyl ester, 3,3-dimethyl-heptanoic acid methyl ester, 3,3-dimethyl-bareric acid iso Propyl ester, 2-ethylhexyl acetate, ethyl 2,4,4-trimethylpentanoate, butyl neopentanoate, neopentyl pivalate, pivalic acid isopentyl ester, 2-ethyl-butyric acid tert- Butyl ester, acetic acid- (1,4-dimethylbutyl) ester, sec-amyl isobarylate, 3-acetoxy-2,4-dimethylhexane, 3,3-dimethylbutyryl acid sec- Methyl-3,5-dimethylhexanoate, acetic acid 4-octyl ester, 3,5-dimethyl-heptanoic acid, Acid methyl ester, 1-acetoxy-4,4-dimethyl-hexane, pentyl 3-methyl butanoate, 7-methyloctanoic acid Ethyl heptanoic acid methyl ester, methyl 2,4-dimethyl heptanoate, methyl 2,2-dimethyl heptanoate, pentyl 2,2-dimethyl propanoate, ethyl 2,3,4- Trimethylvalerate, tert-butylhexanoate, 3-acetoxy-2,5-dimethylhexane, 1,1,3,3-tetramethylbutyl acetate, 2,2,4-trimethylpentyl acetate, methyl 2 , 2,2,3,4-tetramethyl-methyl ester), 2-propyl-2-methyl-pentanone acid methyl ester, 1,1,3,3-tetramethylpentanoate, Butyl-4-methylpentanoate, 2-isopropyl-3,3-dimethyl-butyric acid methyl ester, methyl 2-ethyl-2-methylhexanoate , Ethyl 2-ethyl-3,3-dimethyl butanoate, hexyl isobutanoate, methyl-5,5-dimethylheptanoate, methyl 2,3,4-trimethylhexanoate, methyl 2,3- Dimethyl-2-ethyl pentanoate, 3- Propyl-pentyl-acetate, butyl 2-ethylbutyrate, 4-methyloctanoic acid, 2-ethylhexanoic acid, 2-ethylhexyl acetate, Trimethyl-hexanoic acid methyl ester, hexanoic acid- (2,2,5-trimethyl-methyl ester), 4 (4-methylpentanoic acid ethyl ester) (3,4,4-trimethyl-ethyl ester), tert-amyl pivalate, isobutyl 3-methylpentyl isobutyrate, ethyl 3,3,4-trimethylpentanoate, , 3-dimethylbutyrate, 1-isopropyl-1,2-dimethylpropyl acetate, ethyl 4-ethylhexanoate, methyl 2-ethyl-3,3-dimethylpentanoate, methyl 3,6-dimethylheptanoate , Isobutyl hexanoate, 3,3,4,4-tetramethylpentanoic acid methyl ester, 2- Methylbutanoate, neopentyl 2-methylbutanoate, ethyl 3,3-dimethylhexanoate, 4-ethyl-3-hexyl acetate, 2,4-dimethylpentane- Methyl propionate, methyl neononanoate, methyl 4,4,5-trimethyl hexanoate, methyl diisopropyl propionate, 1-methyl ethyl 4-methyl hexanoate, butanone acid 1-ethyl butyl ester Ethyl pentanoate, methyl 4-ethylheptanoate, pentan-3-yl 3-methyl butanoate, ethyl 5,5-dimethylhexanoate, 2- Methyl-3-methylbutylbutanoic acid ester, neryl acetate, dipropylene glycol dimethyl ether or dipropylene glycol methyl ether acetate. According to one embodiment of the present invention, tertiary amines such as tert - Butyl acetate, sec-butylacetate Isobutyl acetate, n-butyl acetate, 2-methylbutyl acetate, 2-pentyl acetate, neopentyl acetate, 3-methylbutan-2-ylacetate, isoamyl acetate, n-pentyl acetate, Butyl acetate, 2-ethylbutyl acetate, 2,3-dimethylbutyl acetate, 3-methylbutyl acetate, 3- Methyl-1-pentyl acetate, 4-methyl-2-pentyl acetate, 4-methyl-2-pentyl acetate, 2-methyl Methylhexyl acetate, 1-heptyl acetate, 1,1,2,2-tetramethylpropyl acetate, 5-methylhexyl acetate, ethyl isoamyl acetate, 4-heptyl acetate, 5-methyl 2-yl acetate, 2,4-dimethyl-2-phen Acetate, 2-methyl-2-hexyl acetate, 4,4-dimethylpentyl acetate, 4-methyl-3-hexyl acetate, 2-octyl acetate, 1-ethylhexyl acetate, 1,1,3,3-tetramethylbutyl acetate, 2,2,4-trimethylpentyl acetate, 2,2-dimethylhexyl acetate, 1-isopropyl-1,2-dimethylpropyl acetate, Hexyl acetate, dipropylene glycol dimethyl ether or dipropylene glycol methyl ether acetate is preferably used.

These solvents may be used alone or in combination of two or more.

The content of the solvent may be 5 to 95% by weight, preferably 20 to 90% by weight, more preferably 30 to 80% by weight based on 100% by weight of the entire quantum dot dispersion. If the amount of the solvent is less than the above range, the dispersibility may deteriorate. If the amount of the solvent is less than the above range, the solids content of the resin composition may be difficult to control.

The quantum dot dispersion of the present invention is characterized in that the solvent as a whole satisfies the condition of the above-mentioned solvent, that is, the Hansen solubility parameter of the above formula (1), and is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic hydrocarbon-based solvent. Thus, according to one embodiment of the present invention, even though the individual solvent components in the quantum dot dispersion of the present invention do not satisfy the Hansen solubility parameter of the above formula (1), the entirety of these solvents satisfy the Hansen solubility parameter of the formula .

In one embodiment of the present invention, the quantum dot dispersion may further comprise a phosphate ester compound. When the phosphoric acid ester compound is further included, the dispersibility between the quantum dot and the solvent is improved and the quantum efficiency is advantageously improved, and there is an advantage that the light efficiency and the defective photosensitive property can be suppressed. In addition, there is an advantage of excellent compatibility with other constituents constituting the self-light-sensitive photosensitive resin composition containing the same.

The phosphoric acid ester compound may include a form in which a hydrogen atom of a hydroxy group or a hydroxyl group present in a phosphate ester ((HO) ₂ PO (OR)) or phosphoric acid (H ₃ PO ₄ ) is substituted or unsubstituted with another functional group. For example, the phosphoric acid ester compound may be expressed in the form of (H ₂ PO ₃ -), but is not limited thereto. Further, in the present invention, the above-mentioned "phosphate ester system" may include at least one selected from the group consisting of a phosphorous acid derivative, a phosphoric acid derivative, a phosphonic acid derivative and a phosphinic acid derivative.

The phosphoric acid ester compound may further include at least one of a polyether moiety, a polyester moiety and a phosphoric acid group in one molecule.

In the present invention, "poly-" refers to a compound composed of a large number of repeating units, wherein the "polyether moiety" and the "polyester moiety" each have a repeating unit having an ether group or an ester group of 1 to 20 As shown in FIG. Preferably, in the present invention, the repeating unit may be composed of 5 to 20, more preferably 10 to 20, and in this case, there is an advantage of excellent compatibility.

When the phosphoric acid ester compound further contains a polyether moiety in one molecule, there is an advantage that compatibility with an alkali-soluble resin to be described later is improved. When the phosphate ester compound further contains a polyester moiety in one molecule The compatibility with the alkali-soluble resin and the dissolution characteristics with respect to the alkali developer are improved. When the phosphoric acid ester compound further contains a phosphoric acid group in one molecule, it can serve as a protective layer through adsorption on the surfaces of the quantum dots and has an advantage of deagglomerating the quantum dots.

Preferably, the phosphoric acid ester compound according to the present invention may contain a polyether moiety, a polyester moiety and a phosphoric acid moiety in one molecule. In this case, the quantum dots are deagglomerated to reduce the dispersed particle size and the compatibility with the alkali- And solubility characteristics in an alkali developing solution, which is advantageous for pattern formation.

In the present invention, the "acid value" can be related to the solubility in the self-luminescent photosensitive resin composition to be described later, as a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer. When the acid value of the phosphate ester compound is 10 (KOH mg / g) or more, specifically 10 to 200 (KOH mg / g), the developing rate of the self-emitting photosensitive resin composition containing the surface treatment agent is preferable. When the acid value is less than the above range, it may be difficult to secure a sufficient developing rate. If the acid value is in excess of the above range, the adhesion with the substrate is reduced, and the pattern tends to be short-circuited. It is desirable to satisfy the above-mentioned range.

The phosphoric acid ester compound may be contained in an amount of 1 to 300 parts by weight, preferably 3 to 250 parts by weight, more preferably 5 to 200 parts by weight based on 100 parts by weight of the total solid content of the quantum dots. When the surface treatment agent is contained within the above range, the decolorization effect of the quantum dots is excellent, and it is possible to suppress the precipitation phenomenon due to the polarity difference in the quantum dot dispersion of the present invention and the self-luminescent photosensitive resin composition containing the same, It is preferable since it can serve as a protective layer of the quantum dot in the process.

If the phosphoric acid ester compound is contained in an amount less than the above range, the deagglomeration effect of the quantum dots may be somewhat lowered, and if it exceeds the above range, the developing property of the self-luminescent photosensitive resin composition containing the quantum dot dispersion is somewhat deteriorated And therefore, it is preferable to be included within the above range.

<Self-Luminescent Photosensitive Resin Composition>

Another aspect of the present invention relates to the above-described quantum dot dispersion; And a self-emitting photosensitive resin composition further comprising at least one selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an additional solvent and an additive.

The self-luminescent photosensitive resin composition according to the present invention is characterized in that the above-described quantum dot dispersion is contained in an amount of 3 to 80% by weight, preferably 5 to 70% by weight, more preferably 10 to 60% by weight, %. When the self-luminescent photosensitive resin composition according to the present invention contains the above-described quantum dot dispersion within the above-mentioned range, there is an advantage that a color filter having excellent luminescence characteristics can be produced. When the quantum dot dispersion is included in the range below the range, the luminescence characteristics may be somewhat lowered. If the quantum dot dispersion is contained in the range exceeding the above range, the formation of the pattern may be more or less difficult as the content of the other components is decreased. And therefore, it is preferable to be included within the above range.

The self-luminescent photosensitive resin composition according to the present invention may further comprise an alkali-soluble resin.

The alkali-soluble resin can make the unexposed portion of the color filter made of the self-light-sensitive photosensitive resin composition become alkali-soluble and can remove the alkali-soluble resin, and can perform the role of retaining the exposed region. When the self-luminescent photosensitive resin composition contains the alkali-soluble resin, the quantum dots may be uniformly dispersed in the composition, and the quantum dots may be protected during the process to maintain the luminance.

The alkali-soluble resin according to the present invention may be selected from those having an acid value of 50 to 200 (KOH mg / g). The above-mentioned "acid value" relates to the solubility as a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer. If the acid value of the alkali-soluble resin is less than the above-mentioned range, it may be difficult to secure a sufficient developing rate. If the acid value exceeds the above range, the adhesion with the substrate tends to be reduced and the pattern tends to be short- There may arise a problem in which the temperature of the gas is increased.

Further, in order to improve the surface hardness of the alkali-soluble resin for use as a color filter, the molecular weight and molecular weight distribution (Mw / Mn) may be limited. Preferably a weight average molecular weight of 3,000 to 30,000, preferably 5,000 to 20,000, and a molecular weight distribution of 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having the above molecular weight and molecular weight distribution in the above range can be improved in hardness as mentioned above, and has a high residual film ratio as well as excellent solubility in the non-exposed portion in the developer and can improve resolution.

The alkali-soluble resin includes at least one selected from the group consisting of a copolymer of a carboxyl group-containing unsaturated monomer, a copolymer of a monomer having a copolymerizable unsaturated bond and a combination thereof.

The carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, an unsaturated tricarboxylic acid, or the like. Specific examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid,? -Chloroacrylic acid, cinnamic acid, and the like. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, citraconic anhydride and the like. The unsaturated polycarboxylic acid may also be mono (2-methacryloyloxyalkyl) ester thereof, for example, mono (2-acryloyloxyethyl) succinate, mono (2-methacryloyloxyethyl) , Phthalic acid mono (2-acryloyloxyethyl), phthalic acid mono (2-methacryloyloxyethyl), and the like. The unsaturated polyvalent carboxylic acid may be a mono (meth) acrylate of the divalent dicarboxylic polymer of both ends, and examples thereof include? -Carboxypolycaprolactone monoacrylate,? -Carboxypolycaprolactone monomethacrylate and the like. These carboxyl group-containing monomers may be used alone or in combination of two or more.

The monomer copolymerizable with the carboxyl group-containing unsaturated monomer may be an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated ether compound, An unsaturated imide compound, an aliphatic conjugated diene compound, a macromonomer having a monoacryloyl group or monomethacryloyl group at the end of the molecular chain, a vulcanizable monomer, and combinations thereof.

More specifically, the copolymerizable monomer is selected from the group consisting of styrene,? -Methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m- Vinylbenzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p-vinyl benzyl glycidyl Aromatic vinyl compounds such as ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, Acrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl Methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxy diethylene glycol acrylate, methoxy diethylene glycol methacrylate, methoxy triethylene glycol acrylate, methoxy triethylene glycol methacrylate Acrylate, methoxypropylene glycol methacrylate, methoxypropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadiene Acrylate, dicyclopentadienyl methacrylate, adamantyl (meth) acrylate, (Meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate and the like Unsaturated carboxylic acid esters; Aminoethyl methacrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2- Unsaturated carboxylic acid amino groups such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl methacrylate and 3- Alkyl ester compounds; Unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl ester compounds such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; Unsaturated ether compounds such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Vinyl cyanide compounds such as acrylonitrile, methacrylonitrile,? -Chloroacrylonitrile, and vinylidene cyanide; Unsaturated amides such as acrylamide, methacrylamide,? -Chloroacrylamide, N-2-hydroxyethyl acrylamide and N-2-hydroxyethyl methacrylamide; Unsaturated imide compounds such as maleimide, benzylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; And a monoacryloyl group or monomethacryloyl group at the end of the polymer molecular chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, Macromonomers; A bulky monomer such as a monomer having a norbornyl skeleton, a monomer having an adamantane skeleton, or a monomer having a rosin skeleton which can lower the relative dielectric constant can be used.

The alkali-soluble resin may be contained in an amount of 5 to 80% by weight, specifically 10 to 70% by weight, more specifically 15 to 60% by weight based on 100% by weight of the total solid content of the self-light-sensitive photosensitive resin composition. When the alkali-soluble resin is contained within the above-mentioned range, the solubility in the developer is sufficient, the pattern formation is easy, and the reduction of the film thickness of the pixel portion of the exposed portion is prevented during development, so that the non-pixel portion is satisfactorily missed. If the alkali-soluble resin is contained in the range below the above-mentioned range, the non-pixel portion may be somewhat missed. If the alkali-soluble resin is contained in the above range, the solubility in the developer may be somewhat lowered and pattern formation may be somewhat difficult.

The photopolymerizable compound that can be further contained in the self-luminescent photosensitive resin composition of the present invention is a compound capable of polymerizing under the action of light and a photopolymerization initiator to be described later, and examples thereof include monofunctional monomers, bifunctional monomers and other polyfunctional monomers have.

The type of the monofunctional monomer is not particularly limited, and examples thereof include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate N-vinylpyrrolidone, and the like.

The type of the bifunctional monomer is not particularly limited and examples thereof include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) Glycol di (meth) acrylate, bis (acryloyloxyethyl) ether of bisphenol A, and 3-methylpentanediol di (meth) acrylate.

The type of the polyfunctional monomer is not particularly limited and includes, for example, trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri Acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (Meth) acrylate, propoxylated dipentaerythritol hexa (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and the like. Of these, multifunctional monomers having two or more functional groups are preferably used.

The photopolymerizable compound may be contained in an amount of 5 to 70% by weight, specifically 10 to 60% by weight, more specifically 15 to 50% by weight based on 100% by weight of the entirety of the solid content of the self-luminescent photosensitive resin composition. When the photopolymerizable compound is included in the above range, it is advantageous in terms of strength and smoothness of the pixel portion. When the photopolymerizable compound is contained in the range below the above range, the strength of the pixel portion may be somewhat lowered, and when the photopolymerizable compound is contained in the range exceeding the above range, the smoothness may be somewhat lowered. .

The self-luminescent photosensitive resin composition according to the present invention may further comprise a photopolymerization initiator, and the photopolymerization initiator may be used without particular limitation as long as it can polymerize the photopolymerizable compound. Particularly, from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability, and cost, the photopolymerization initiator is preferably used in combination with an acetophenone compound, a benzophenone compound, a triazine compound, a biimidazole compound, It is preferable to use at least one compound selected from the group consisting of compounds.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2-hydroxy- 1- [4- 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one, 2-methylcyclohexyl phenyl ketone, 2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one.

Examples of the benzophenone compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3 ', 4,4'-tetra tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, and the like.

Specific examples of the triazine compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6 - (4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, (Trichloromethyl) -6- [2- (5-methylfuran-2- (4-methoxystyryl) -1,3,5-triazine, Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan- , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4- ) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine.

Specific examples of the imidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbimidazole, 2,2'-bis (2,3- Phenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) , 2,2'-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) Imidazole compounds in which 4'5,5'-tetraphenyl-1,2'-biimidazole or phenyl groups at 4,4 ', 5,5' positions are substituted by carboalkoxy groups. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3- , 2,2-bis (2,6-dichlorophenyl) -4,4'5,5'-tetraphenyl-1,2'-biimidazole is preferably used do.

Specific examples of the oxime compounds include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and commercially available products such as Irgacure OXE 01 and OXE 02 from BASF.

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

The photopolymerization initiator may be contained in an amount of 0.1 to 20% by weight, preferably 0.5 to 15% by weight, and more preferably 1 to 10% by weight based on 100% by weight of the total solid content of the self-luminescent photosensitive resin composition. When the photopolymerization initiator is contained within the above range, the self-light-sensitive photosensitive resin composition is highly sensitized and the exposure time is shortened, so that the productivity is improved and the high resolution can be maintained. Further, there is an advantage that the strength of the pixel portion formed by using the self-luminescent photosensitive resin composition according to the present invention and the smoothness on the surface of the pixel portion are improved.

The photopolymerization initiator may further include a photopolymerization initiator in order to improve the sensitivity of the self-luminescent photosensitive resin composition. When the photopolymerization initiator is included, the sensitivity is further increased and the productivity is improved.

The photopolymerization initiation assistant may be, for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound, and an organic sulfur compound having a thiol group, but is not limited thereto.

As the amine compound, an aromatic amine compound is preferably used. Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- Dimethylaminobenzoic acid, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone ), 4,4'-bis (diethylamino) benzophenone, and the like.

The carboxylic acid compound is preferably an aromatic heteroacetic acid. Specifically, the carboxylic acid compound is preferably selected from the group consisting of aromatic heteroacetic acids, such as phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, Chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid.

Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxyethyl) 1,3,5-triazine-2,4,6 (1H, 3H, 5H) -thione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexacis (3-mercaptopropionate), and tetraethylene glycol bis (3-mercaptopropionate) .

The photopolymerization initiator may be appropriately added in the range not impairing the scope of the present invention.

The additional solvent that can be further included in the self-luminescent photosensitive resin composition of the present invention is not particularly limited and may include an organic solvent ordinarily used in the art, which may be the same as the solvent contained in the quantum dot dispersion of the present invention , Or may be different.

Specific examples of the additional solvent include alkylene glycol alkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether and propylene glycol methyl ethyl ether, Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; Alkylene glycol alkyl ether acetates such as methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate and propylene glycol monopropyl ether acetate; Alkoxyalkyl acetates such as methoxybutyl acetate and methoxypentyl acetate; Aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; and cyclic esters such as? -butyrolactone.

The above-mentioned additional solvent is preferably an organic solvent having a boiling point of 100 占 폚 to 200 占 폚 in the above-mentioned additional solvent in terms of coatability and dryness, more preferably alkylene glycol alkyl ether acetates, ketones, 3- Ethoxypropionate, methyl 3-methoxypropionate, and the like, and more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethyl 3-ethoxypropionate, 3-methoxy Methyl propionate and the like. These additional solvents may be used alone or in combination of two or more.

The total solvent (the solvent and the additional solvent in the quantum dot dispersion) contained in the self-luminescent photosensitive resin composition of the present invention is contained in an amount of 20 to 90% by weight, preferably 25 to 85% by weight, More preferably from 30 to 80% by weight. When the content of the above-mentioned total solvent is included within the above range, the coating property can be improved when applied by a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater) . If the content of the total solvent is less than the above range, the coating property may be somewhat lowered, and the process may be somewhat difficult. If the content exceeds the above range, the performance of the color filter formed of the self-luminescent photosensitive resin composition may be somewhat deteriorated There may be problems.

The self-luminescent photosensitive resin composition according to the present invention may further include an additive such as an adhesion promoter and a surfactant in order to improve coatability or adhesion.

The adhesion promoter may include a silane coupling agent having a reactive substituent selected from the group consisting of a carboxyl group, a methacryloyl group, an isocyanate group, an epoxy group, and a combination thereof, which may be added to improve adhesion with the substrate. But is not limited thereto. For example, the silane coupling agent may be at least one selected from the group consisting of trimethoxysilylbenzoic acid,? -Methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxysilane,? -Isocyanatepropyltriethoxysilane,? -Glycidoxy Propyltrimethoxysilane, and? - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, etc., these may be used singly or in combination of two or more kinds

When the self-luminescent photosensitive resin composition according to the present invention includes the above-mentioned surfactant, there is an advantage that the coating property can be improved. For example, the surfactant may be selected from the group consisting of BM-1000, BM-1100 (BM Chemie), Prolide FC-135 / FC-170C / FC-430 (Sumitomo 3M Co.), SH-28PA / -190 / SZ- Co., Ltd.) may be used, but the present invention is not limited thereto.

In addition, the self-luminescent photosensitive resin composition according to the present invention may further contain additives such as an antioxidant, an ultraviolet absorber and an antiflocculant to the extent that the effect of the present invention is not impaired, It can be appropriately added by a person skilled in the art. For example, the additive may be used in an amount of 0.05 to 10 parts by weight, specifically 0.1 to 10 parts by weight, more specifically 0.1 to 5 parts by weight, based on the total weight of the self-emission photosensitive resin composition, but is not limited thereto.

<Color filter>

Another aspect of the present invention relates to a color filter manufactured using the self-luminous photosensitive resin composition described above.

Since the color filter according to the present invention contains a cured product of the self-luminescent photosensitive resin composition containing the quantum dot dispersion of the present invention, the quantum dot particles are evenly dispersed and the light emitting property is advantageously excellent.

The color filter includes a substrate and a pattern layer formed on the substrate.

The substrate may be the substrate of the color filter itself, or may be a portion where a color filter is placed on a display device or the like, and is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiOx), or a polymer substrate, and the polymer substrate may be polyethersulfone (PES) or polycarbonate (PC).

The pattern layer may be a layer containing the self-luminescent photosensitive resin composition of the present invention, which is formed by applying the self-luminescent photosensitive resin composition and exposing, developing, and thermosetting the self-luminescent photosensitive resin composition in a predetermined pattern. The pattern layer may be formed by performing a method commonly known in the art.

The color filter including the substrate and the pattern layer as described above may further include a partition wall formed between each pattern, and may further include a black matrix, but is not limited thereto.

Further, the color filter may further include a protective film formed on the pattern layer of the color filter.

The color filter may include at least one selected from the group consisting of a red pattern layer, a green pattern layer, and a blue pattern layer. Specifically, the color filter may include at least one selected from the group consisting of a red pattern layer including an effective quantum dot, a green pattern layer including a rust quantum dot, and a blue pattern layer including a blue quantum dot according to the present invention . The red pattern layer, the green pattern layer, and the blue pattern layer may emit red light, green light, and blue light when irradiated with light, respectively. At this time, the emission light of the light source is not particularly limited, but blue light A light source that emits light can be used.

The color filter may include only a pattern layer of two colors of a red pattern layer, a green pattern layer, and a blue pattern layer, but is not limited thereto. However, if the color filter has only a pattern layer of two colors, the pattern layer may further include a transparent pattern layer not containing the quantum dot particles.

When the color filter includes only the pattern layer of the two colors, a light source that emits light having a wavelength other than the two colors may be used. For example, when the color filter includes a red pattern layer and a green pattern layer, a light source that emits blue light may be used. In this case, the red quantum dot emits red light and the green quantum dot emits green light. Blue light can be seen as blue light by the light source is transmitted as it is.

<Image Display Device>

Further, another aspect of the present invention relates to an image display apparatus including the color filter described above.

The color filter of the present invention is applicable not only to a general liquid crystal display device but also to various image display devices such as an electroluminescence display device, a plasma display device, and a field emission display device.

The image display device according to the present invention has a color filter formed of a cured product of the self-luminescent photosensitive resin composition containing the quantum dot dispersion of the present invention, thereby exhibiting an excellent luminescent property.

The image display apparatus may further include a light source for emitting blue light and a transparent pattern layer, and the light source for emitting the blue light, and the transparent pattern layer may be applied as described above.

Hereinafter, the present invention will be described in detail by way of examples to illustrate the present invention. However, the embodiments according to the present disclosure can be modified in various other forms, and the scope of the present specification is not construed as being limited to the above-described embodiments. Embodiments of the present disclosure are provided to more fully describe the present disclosure to those of ordinary skill in the art. In the following, "%" and "part" representing the content are by weight unless otherwise specified.

Production Examples 1 to 2

Preparation Example 1: Preparation of a quantum dot dispersion

(Quantum dots and solvent) and the contents described in Table 1 below to prepare a quantum dot dispersion, and the Hansen solubility parameters of each of the preparation examples (Production Examples 1-1 to 1-11) are also shown in Table 1 below.

(Unit: wt%) The quantum dot (A-1) solvent Hansen solubility parameter One 2 3 4 5 6 7 8 _d δ _p δ _h Production Example 1-1 30 70 16.3 4.9 8 Production Example 1-2 30 70 14.9 2.1 3.8 Production Example 1-3 30 70 16 2.9 6.1 Production Example 1-4 30 70 16.6 2.4 6.4 Production Example 1-5 30 60 10 15.2 5.4 4.6 Production Example 1-6 30 60 10 14.1 4.9 4.3 Preparation Example 1-7 30 60 10 15.2 5.6 5.6 Production Example 1-8 30 70 16.1 6.1 6.6 Production Example 1-9 30 70 7.9 2.5 4.5 Production Example 1-10 30 70 15.1 2.5 8.7 Production Example 1-11 30 70 17.8 3.1 5.7 1: dipropylene glycol methyl ether acetate (DPMA, manufactured by Dow Chemical)
2: dipropylene glycol dimethyl ether (manufactured by Dow Chemical)
3: Hexyl acetate (manufactured by Aldrich)
4: Diethyl carbonate (manufactured by Aldrich)
5: Propylene glycol monomethyl ether acetate (PGMEA, manufactured by Aldrich)
6: Ethyl-3-ethoxypropionate (EEP, manufactured by Dow Chemical)
7: Tripropylene glycol methyl ether (TPM, manufactured by Dow Chemical)
8: Chloroform (manufactured by Aldrich)

Production Example 2: Preparation of alkali-soluble resin

A flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen inlet tube was prepared, and 45 parts by weight of N-benzylmaleimide, 45 parts by weight of methacrylic acid, 10 parts by weight of tricyclodecyl methacrylate, 4 parts by weight of peroxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate (hereinafter referred to as "PGMEA") were charged and stirred to prepare a monomer dropping tank. 6 parts by weight of n-dodecanethiol And 24 parts by weight of PGMEA were added and stirred to prepare a chain transfer agent dropwise.

Then, 395 parts by weight of PGMEA was introduced into the flask, the atmosphere in the flask was replaced with nitrogen in air, and the temperature of the flask was raised to 90 DEG C with stirring. Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The mixture was allowed to stand at 90 DEG C for 2 hours each. After 1 hour, the temperature was elevated to 110 DEG C and maintained for 3 hours. Then, a gas introduction tube was introduced to mix oxygen / nitrogen = 5 / Gas bubbling was started.

Subsequently, 10 parts by weight of glycidyl methacrylate, 0.4 part by weight of 2,2'-methylenebis (4-methyl-6-t-butylphenol) and 0.8 part by weight of triethylamine were charged into a flask, And then cooled to room temperature to obtain an alkali-soluble resin having a solid content of 29.1 wt%, a weight average molecular weight of 32,000, and an acid value of 114 mgKOH / g.

Production Example 3: Preparation of color filter

A color filter was prepared using the self-luminescent photosensitive resin compositions prepared in Examples 1 to 7 and Comparative Examples 1 to 4 below. Specifically, each of the self-light-emitting photosensitive resin compositions was coated on a glass substrate by spin coating, then placed on a heating plate, and held at a temperature of 100 캜 for 3 minutes to form a thin film. Subsequently, a test photomask having a square transmission pattern of 20 mm x 20 mm and a line / space pattern of 1 m to 100 m was placed on the thin film, and the distance between the test photomask and the test photomask was set to 100 m to irradiate ultraviolet light.

At this time, the ultraviolet light source was irradiated with light at an exposure dose (365 nm) of 200 mJ / cm ² using an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Ushio DENKI Co., Ltd., and no special optical filter was used. The thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 80 seconds to develop. The glass plate on which the thin film was coated was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 캜 for 10 minutes to prepare a color filter pattern. The thickness of the self-emission color filter pattern was 3 mu m.

Examples 1 to 7 and Comparative Examples 1 to 4

The self-luminescent photosensitive resin compositions were prepared with the components and contents shown in Table 2 below.

(Unit: wt%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Quantum dot dispersion ¹⁾ Production Example 1-1 40 Production Example 1-2 40 Production Example 1-3 40 Production Example 1-4 40 Production Example 1-5 40 Production Example 1-6 40 Preparation Example 1-7 40 Production Example 1-8 40 Production Example 1-9 40 Production Example 1-10 40 Production Example 1-11 40 Alkali soluble resin ²⁾ 20 20 20 20 20 20 20 20 20 20 20 Photopolymerizable compound ^{3 )} 20 20 20 20 20 20 20 20 20 20 20 Photopolymerization initiator ^{4 )} 5 5 5 5 5 5 5 5 5 5 5 Additional solvent ^{5 )} 15 15 15 15 15 15 15 15 15 15 15 1: Quantum dot dispersion of Preparation Example 1
2: The alkali-soluble resin of Production Example 2
3: dipentaerythritol hexaacrylate (KAYARAD DPHA, manufactured by Nippon Kayaku Co., Ltd.)
4: Irgacure-907 (manufactured by BASF)
5: Propylene glycol monomethyl ether acetate (PGMEA, manufactured by Aldrich)

Experimental Example

Experimental Example 1: Dispersion Particle Size Measurement of Quantum dot Dispersion and Self-luminescent Photosensitive Resin Composition

The dispersion particle size was measured using ELSZ-2000ZS (manufactured by Otsuka Chemical Co., Ltd.) and described in Table 3 below. As the quantum dot particles aggregate, the dispersed particle size becomes larger.

Experimental Example 2: Measurement of Intensity

The emission intensity of the color filter manufactured in Production Example 3 in the region of 550 nm was measured using a spectrometer (manufactured by Ocean Optics) and is shown in Table 3 below. It is judged that the self-luminescence characteristic is exerted as the measured luminescence intensity is larger.

(Nm) Intensity Quantum dot dispersion Self-luminescent photosensitive resin composition Example 1 7 8 53,275 Example 2 8 9 55,935 Example 3 8 8 52,354 Example 4 7 7 53,215 Example 5 8 7 54,252 Example 6 7 8 54,446 Example 7 9 10 51,243 Comparative Example 1 15 852 23,542 Comparative Example 2 13 921 28,654 Comparative Example 3 15 865 24,569 Comparative Example 4 7 8 55,656

In the case of the quantum dot dispersion of the present invention and the self-luminescent photosensitive resin composition (Examples 1 to 7) containing the same, the quantum dot dispersion of the present invention and the self-luminescent photosensitive resin composition containing the same 1 to 3). In the case of the color filter including the cured product of the self-luminescent photosensitive resin composition of the present invention (Examples 1 to 7), the case where the self-luminescent photosensitive resin composition of the present invention does not contain the cured product (Comparative Examples 1 to 3 ) Is higher than that of the light emitting layer.

Particularly, in the case of the quantum dot dispersion of the present invention, the self-luminescent photosensitive resin and the color filter manufactured using the same (Examples 1 to 7), although the composition containing no harmful components (such as chloroform) (Comparative Example 4).

Claims (11)

A quantum dot, and a solvent, wherein the solvent satisfies the condition of the Hansen solubility parameter of the following formula (1), and is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic hydrocarbon-based solvent: Quantum dot dispersion:
[Equation 1]
δ _d ≥ 14
2 &lt; / _{RTI &gt;}&lt; _{RTI ID =}
2 ≤ δ _h ≤ 8
(In the above formula (1)
? _d is the dispersion component,? _p is the polar component, and? _h is the hydrogen bonding component. The method according to claim 1,
Wherein the solvent comprises at least one selected from the group consisting of esters and ethers having 6 to 10 carbon atoms. 3. The method of claim 2,
The solvent may be selected from the group consisting of tert-butyl acetate, sec-butyl acetate, isobutyl acetate, n-butyl acetate, 2-methylbutyl acetate, 2-pentyl acetate, neopentyl acetate, , n-pentyl acetate, tert-amyl acetate, 3-pentyl acetate, 2-hexyl acetate, 3-methylpentyl 3-acetate, 3-hexyl acetate, 2,3- Methyl-1-pentyl acetate, 3-methylbutyl acetate, n-hexyl acetate, 4-methyl-1-pentyl acetate, 2- Methylhexyl acetate, 1-heptyl acetate, 1,1,2,2-tetramethylpropyl acetate, 5-methylhexyl acetate, ethyl iso-propyl acetate, Amyl acetate, 4-heptyl acetoate Methylhexan-2-yl acetate, 2,4-dimethyl-2-pentyl acetate, 2-methyl-2-hexyl acetate, 4,4-dimethylpentyl acetate, Octyl acetate, 1-ethylhexyl acetate, 1-octyl acetate, 2-ethylhexyl acetate, 1,1,3,3-tetramethylbutyl acetate, 2,2,4-trimethylpentyl acetate, 2,2- Wherein the quantum dot comprises at least one selected from the group consisting of acetate, 1-isopropyl-1,2-dimethylpropyl acetate, 4-ethyl-3-hexyl acetate, dipropylene glycol dimethyl ether and dipropylene glycol methyl ether acetate Dispersion. The method according to claim 1,
Wherein the quantum dot is selected from the group consisting of C5 to C20 alkylcarboxylic acid, alkenylcarboxylic acid, alkynylcarboxylic acid; An organic ligand comprising at least one selected from the group consisting of phosphine, phosphine oxide and thiol groups. The method according to claim 1,
Wherein the quantum dot dispersion further comprises a phosphate ester compound. The method according to claim 1,
Wherein the quantum dots are contained in an amount of 5 to 70% by weight based on 100% by weight of the total solid content of the quantum dot dispersion. The method according to claim 1,
Wherein the solvent is contained in an amount of 5 to 95% by weight based on 100% by weight of the entire quantum dot dispersion. 8. A quantum dot dispersion according to any one of claims 1 to 7; And at least one selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an additional solvent and an additive. 9. The method of claim 8,
Wherein the quantum dot dispersion is contained in an amount of 3 to 80% by weight based on 100% by weight of the entire self-light-sensitive photosensitive resin composition. A color filter comprising a cured product of the self-light-sensitive photosensitive resin composition of claim 8. An image display device comprising the color filter of claim 10.