CN109952360B - Quantum dot dispersion, self-luminous photosensitive resin composition, color filter manufactured using the same, and image display device - Google Patents
Quantum dot dispersion, self-luminous photosensitive resin composition, color filter manufactured using the same, and image display device Download PDFInfo
- Publication number
- CN109952360B CN109952360B CN201780070674.0A CN201780070674A CN109952360B CN 109952360 B CN109952360 B CN 109952360B CN 201780070674 A CN201780070674 A CN 201780070674A CN 109952360 B CN109952360 B CN 109952360B
- Authority
- CN
- China
- Prior art keywords
- methyl
- ethyl
- acetate
- quantum dot
- ester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/0805—Chalcogenides
- C09K11/0811—Chalcogenides with zinc or cadmium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/54—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing zinc or cadmium
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0048—Photosensitive materials characterised by the solvents or agents facilitating spreading, e.g. tensio-active agents
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/105—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having substances, e.g. indicators, for forming visible images
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Optics & Photonics (AREA)
- Materials For Photolithography (AREA)
- Optical Filters (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The quantum dot dispersion liquid of the present invention is characterized by containing quantum dots and a solvent, wherein the solvent does not contain a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent, and an aliphatic hydrocarbon solvent, and satisfies the condition of Hansen solubility parameter (Hansen solubility parameter) which is a specific condition.
Description
Technical Field
The present invention relates to a quantum dot dispersion liquid having excellent dispersion characteristics and being harmless to the human body, a self-luminous photosensitive resin composition, and a color filter produced using the same.
Background
The color filter is a thin-film optical component capable of forming a minute pixel unit by extracting three colors of red, green, and blue from white light, and the size of one pixel is about several tens to several hundreds of micrometers. Such a color filter has a structure in which a black matrix layer is formed in a predetermined pattern on a transparent substrate to shield a boundary portion between pixels from light, and a pixel portion in which three primary colors of a plurality of colors (typically, red R, green G, and blue B) are arranged in a predetermined order to form each pixel are sequentially stacked.
In recent years, as one of methods for forming a color filter, a pigment dispersion method using a pigment dispersion type photosensitive resin is used, but in the process of transmitting light from a light source through the color filter, a part of the light is absorbed by the color filter to lower the light efficiency, and further, a problem occurs in that color reproduction is lowered due to the characteristics of the pigment contained in the color filter.
In particular, as color filters are used in various fields including various image display devices, not only excellent pattern characteristics but also high color reproduction rate, excellent high brightness, high contrast, and other properties are required, and in order to solve such problems, a method for producing a color filter using a self-luminous photosensitive resin composition containing quantum dots has been proposed.
Korean patent publication No. 2006-0084668 relates to a quantum dot phosphor, and discloses a light emitting diode including quantum dots and a solid support for fixing the quantum dots, thereby maintaining excellent light emission efficiency.
However, in korean patent laid-open publication No. 2006-0084668, solvents harmful to the human body, such as chloroform, toluene, hexane, and the like, having excellent dispersibility were used as the dispersion solvent for dispersing the quantum dot phosphor. In the case of the above-mentioned solvent, since it is a highly Volatile Compound (Volatile Organic Compound), or it has carcinogenicity and neurotoxicity, and there is a high risk of abnormality of reproductive function, it is necessary to strictly control the operation environment of the operator.
Therefore, in order to use such quantum dots, a process of removing a solvent harmful to the human body by drying, or replacing a dispersion solvent after removing it with a solvent which is not a highly volatile compound, does not exhibit carcinogenicity or neurotoxicity, has no risk of abnormality of reproductive function, or is very low is performed, but in such a process, a phenomenon of lowering quantum efficiency occurs, and thus, a problem of lowering the light emission characteristics of the manufactured color filter or image display device occurs.
Therefore, under the present circumstances, there is a demand for the development of a quantum dot dispersion liquid which exhibits excellent dispersibility with respect to quantum dots, and which is excellent in light emission characteristics of a color filter or an image display device manufactured using the quantum dots, and which does not contain a component harmful to the human body.
Documents of the prior art
Patent document
Patent document 1: korean patent laid-open publication No. 2006-0084668 (2006.07.25)
Disclosure of Invention
Problems to be solved by the invention
The purpose of the present invention is to provide a quantum dot dispersion liquid that is harmless to the human body and has excellent dispersibility, and a self-luminous photosensitive resin composition containing the quantum dot dispersion liquid.
Another object of the present invention is to provide a color filter and an image display device having excellent light emission characteristics, which are produced using the quantum dot dispersion and the self-luminous photosensitive resin composition.
Means for solving the problems
The quantum dot dispersion liquid of the present invention for achieving the above object is characterized by comprising quantum dots and a solvent, wherein the solvent satisfies Hansen solubility parameter (Hansen solubility parameter) of the following formula 1, and does not contain a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent.
[ numerical formula 1]
δd≥14
2≤δp≤6
2≤δh≤8
(in the above numerical formula 1,
δdrefers to the dispersion component (δ)pRefers to polar component (delta)hRefers to a hydrogen bonding component. )
Further, the present invention provides a self-luminous photosensitive resin composition comprising the above quantum dot dispersion liquid and one or more selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an additional solvent, and an additive.
The present invention also provides a color filter comprising a cured product of the self-luminous photosensitive resin composition, and an image display device comprising the color filter.
Effects of the invention
The quantum dot dispersion liquid of the present invention has advantages of excellent dispersion characteristics and no human toxic substances, and the self-luminous photosensitive resin composition containing the same also has the advantages described above.
In addition, the color filter manufactured by using the self-luminous photosensitive resin composition of the present invention and the image display device including the same have the advantage of excellent light emission characteristics.
Detailed Description
The present invention will be described in more detail below.
In the present invention, when it is stated that a certain member is "on" another member, it includes not only a case where the certain member is in contact with the another member but also a case where the other member exists between the two members.
In the present invention, when a part is referred to as "including" a certain component, it means that other components may be further included without excluding other components unless otherwise stated.
< Quantum dot Dispersion >
One aspect of the present invention relates to a quantum dot dispersion. Specifically, one embodiment of the present invention relates to a quantum dot dispersion liquid containing quantum dots and a solvent, wherein the solvent satisfies Hansen solubility parameter (Hansen solubility parameter) conditions of the following numerical formula 1, and does not contain a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent, and an aliphatic hydrocarbon solvent.
[ numerical formula 1]
δd≥14
2≤δp≤6
2≤δh≤8
(in the above numerical formula 1,
δdrefers to the dispersion component (δ)pRefers to polar component (delta)hRefers to a hydrogen bonding component. )
A quantum dot dispersion according to an embodiment of the present invention includes quantum dots. The quantum dots may be referred to as nano-sized semiconductor substances. Atoms form molecules, and molecules form aggregates of small molecules, so-called molecular clusters, to form nanoparticles, but when such nanoparticles have semiconductor properties, they are called quantum dots. If the quantum dot obtains energy from the outside to reach an excited state, the quantum dot spontaneously releases energy corresponding to a corresponding energy band gap.
A color filter produced from a self-luminous photosensitive resin composition containing a quantum dot dispersion liquid according to one embodiment of the present invention contains the quantum dots, and therefore can emit light by light irradiation (photoluminescence).
In a typical image display device including a color filter, white light passes through the color filter to be colored, and in the process, a part of the light is absorbed by the color filter, so that the light efficiency is lowered. However, in the case of including a color filter produced from the self-luminous photosensitive resin composition of the present invention, the following advantages are provided: the color filter is self-luminous by light of the light source, thus being capable of exhibiting more excellent light efficiency, and is more excellent in color reproducibility since colored light is emitted, and is capable of improving a viewing angle since light is emitted in all directions by photoluminescence.
The quantum dot is not particularly limited as long as it is a quantum dot particle that can emit light by stimulation with light. For example, may be selected from the group consisting of group II-VI semiconductor compounds; a group III-V semiconductor compound; group IV-VI semiconductor compounds; a group IV element or a compound containing the same; and combinations thereof, which may be used alone or in admixture of two or more.
Specifically, the group II to VI semiconductor compound may be selected from the group consisting of, but is not limited to: a binary compound selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; a ternary element compound selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS s, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, and mixtures thereof; and a quaternary element compound selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.
The above-mentioned group III-V semiconductor compound may be selected from the group consisting of: a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; a tri-element compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaGaAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and a quaternary element 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 group IV-VI semiconductor compound may be one or more selected from the group consisting of the following compounds, but is not limited thereto: a binary compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe and mixtures thereof; a ternary element 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.
The above-mentioned group IV element or a compound containing the same may be selected from the group consisting of the following compounds, but is not limited thereto: a single element compound selected from the group consisting of Si, Ge and mixtures thereof; and a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.
The quantum dots can be homogeneous (homogeneous) single structures; a core-shell (core-shell) structure, a gradient (gradient) structure, and the like; or a hybrid structure thereof.
Specifically, in the above core-shell dual structure, the substances constituting the core (core) and the shell (shell), respectively, may be formed of the above-mentioned semiconductor compounds different from each other. For example, the core may include one or more selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, aginnzns, and ZnO, but is not limited thereto. The shell may contain one or more substances selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe, but is not limited thereto.
The quantum dots may be synthesized by a wet chemical process (wet chemical process), a Metal Organic Chemical Vapor Deposition (MOCVD), or a Molecular Beam Epitaxy (MBE), but are not limited thereto.
The wet chemical process is a method of adding a precursor to an organic solvent to grow particles. Since the organic solvent naturally coordinates to the surface of the quantum dot crystal to function as a dispersant to regulate the crystal growth during crystal growth, the growth of nanoparticles can be controlled by a more easy and inexpensive process than in a vapor deposition method such as a metal organic chemical vapor deposition process or molecular beam epitaxy, and therefore, the quantum dot of the present invention is preferably produced by the wet chemical process.
In one embodiment of the present invention, the quantum dot may further include an organic ligand. The organic ligand is bound to the surface of the quantum dot, and can stabilize the quantum dot. The organic ligand is not limited in the present invention, and may include, for example, C5-C20 alkyl carboxylic acids, alkenyl carboxylic acids, or alkynyl carboxylic acids; thiol (thiol), phosphoric acid, pyridine, mercapto alcohol, phosphine oxide, and the like, preferably contains 1 or more selected from the group consisting of alkyl carboxylic acids, alkenyl carboxylic acids, and alkynyl carboxylic acids of C5 to C20, thiol, and phosphoric acid, from the viewpoint of effectively protecting the surface of the quantum dot and improving stability.
The organic ligand may cover a surface of 5% or more of the total area of the quantum dot.
The organic ligand may be contained in the quantum dot dispersion in a commercially available form, and when the organic ligand is not contained in the quantum dot dispersion, the organic ligand may be directly added to the quantum dot dispersion, and when the organic ligand is directly added to the quantum dot dispersion, the organic ligand may be added in an amount of 0.1 to 10 mol per 1 mol of the quantum dot.
According to an embodiment of the present invention, the content of the quantum dot may be 5 to 70% by weight, preferably 10 to 65% by weight, and more preferably 15 to 60% by weight, based on 100% by weight of the entire quantum dot dispersion. When the content of the quantum dot is within the above range, a self-luminous photosensitive resin composition having excellent photosensitive characteristics can be provided. When the content of the quantum dot is less than the above range, the photosensitive characteristics may be degraded, and when the content is greater than the above range, the content of other components, for example, alkali-soluble resin, photopolymerizable compound, etc., which will be described later, is relatively reduced compared to the quantum dot, and thus there is a problem that the production of the color filter may become difficult, and therefore, the content is preferably within the above range.
The quantum dot dispersion liquid of the present invention has an advantage that quantum dots can be uniformly dispersed by including a solvent satisfying the condition of hansen solubility parameter of the following numerical formula 1, and does not contain a halogenated hydrocarbon solvent such as chloroform or dichloromethane which is harmful to human body; aromatic hydrocarbon solvents such as benzene and toluene; and an aliphatic hydrocarbon solvent such as N-hexane, and thus has an advantage that it is possible to prevent workers handling these solvents from being exposed to an environment that is at risk of carcinogenicity, neurotoxicity, or induction of reproductive function abnormality.
[ numerical formula 1]
δd≥14
2≤δp≤6
2≤δh≤8
(in the above numerical formula 1,
δdrefers to the dispersion component (δ)pRefers to polar component (delta)hRefers to a hydrogen bonding component. )
According to one embodiment of the present invention, the solvent may specifically contain one or more selected from the group consisting of ethers and esters having 6 to 10 carbon atoms, and in this case, there is an advantage that dispersibility is improved and emission intensity of the self-luminous photosensitive resin composition containing the solvent is increased.
Specific examples of the solvent include methyl isoamyl ketone, diisobutyl ketone, diethyl carbonate, ethyl butyrate, ethyl isobutyrate, t-butyl acetate, isopropyl propionate, methyl-3-methylbutyrate, propyl propionate, methyl 2-methylbutyrate, sec-butyl acetate, methyl valerate, isobutyl acetate, butyl acetate, methyl pivalate, sec-butyl propionate, n-butyl propionate, 2-methylbutyl acetate, ethyl 2-methylbutyrate, methyl 2-methylvalerate, 2-pentyl acetate, neopentyl acetate, 3-methylbutan-2-ylacetate, isopropyl isobutyrate, propyl isobutyrate, ethyl isovalerate, methyl 3-methylvalerate, ethyl valerate, methyl 4-methylvalerate, methyl hexanoate, isoamyl acetate, pentyl acetate, ethyl butyrate, methyl hexanoate, methyl isovalerate, methyl 4-methylvalerate, methyl hexanoate, ethyl hexanoate, methyl isovalerate, ethyl hexanoate, n-2-butyl acetate, n-butyl propionate, and n-butyl propionate, and n-butyl propionate, and n-butyl propionate, and n-butyl acetate, Isopropyl butyrate, propyl butyrate, isobutyl propionate, methyl 2, 2-dimethylbutanoate, ethyl pivalate, tert-amyl acetate, tert-butyl propionate, methyl 3, 3-dimethylbutyrate, methyl diethylacetate, 3-pentylacetate, methyl 2, 3-dimethylbutyrate, propyl 2-methylbutyrate, ethyl hexanoate, isopropyl 2-methylbutyrate, isobutyl isobutyrate, 2-methylbutyl propionate, 2-hexylacetate, 1-methylbutyl propionate, methyl 2-ethyl-3-methylbutyrate, 3-methylpentyl 3-acetate, 3-hexylacetate, 2-dimethyl-3-acetoxybutane, ethyl 2-methylpentanoate, sec-butyl butyrate, tert-butyl propionate, methyl-butyl propionate, ethyl butyrate, tert-butyl propionate, ethyl butyrate, tert-butyl propionate, methyl butyrate, ethyl butyrate, isobutyl butyrate, tert-butyl acetate, methyl butyrate, ethyl butyrate, tert-butyl propionate, methyl 3-butyl acetate, ethyl butyrate, isobutyl butyrate, 2-butyl propionate, ethyl butyrate, isobutyl propionate, 2-butyl acetate, 2-butyl propionate, 2-methyl butyrate, 2-butyl acetate, 2-methyl butyrate, 2-butyl acetate, 2-methyl-ethyl butyrate, 2-butyl acetate, 2-, Ethyl 3-methylvalerate, ethyl 2, 3-dimethylbutyrate, 2, 3-dimethyl-2-butylacetate, 2-ethylbutylacetate, acetic acid- (2, 2-dimethyl-butyl ester), 2, 3-dimethylbutylacetate, 3-methyl-1-pentylacetate, 3-dimethylbutylacetate, n-butyl isobutyrate, isopropyl valerate, butyl butyrate, pentyl propionate, hexyl acetate, propyl 3-methylbutyrate, methyl heptanoate, isopropyl 3-methylbutyrate, isobutyl butyrate, sec-butyl isobutyrate, propyl valerate, isoamyl propionate, ethyl 4-methylvalerate, 4-methyl-1-pentylacetate, methyl 5-methylhexanoate, methyl acetate, ethyl 2, 3-dimethyl-2-butylacetate, n-butyl isobutyrate, butyl propionate, pentyl butyrate, hexyl propionate, hexyl butyrate, butyl isobutyrate, propyl valerate, isoamyl propionate, ethyl 4-methylvalerate, 4-methyl-1-pentylacetate, methyl 5-methylhexanoate, ethyl 4-methyl-1-pentylacetate, ethyl 5-methylhexanoate, ethyl hexanoate, ethyl 2, 3-methyl-1-pentylacetate, ethyl 5-pentyl acetate, ethyl hexanoate, ethyl 2, ethyl 5-pentyl acetate, ethyl hexanoate, ethyl 4-pentyl acetate, ethyl 2, ethyl 4-pentyl acetate, ethyl 2-pentyl acetate, ethyl butyrate, ethyl 4-pentyl acetate, and ethyl butyrate, and ethyl 4-pentyl acetate, Methyl 2-ethyl-2-methylbutyrate, 2-dimethyl-pentanoic acid methyl ester, ethyl 2, 2-dimethylbutyrate, isopropyl pivalate, propyl 2, 2-dimethylpropionate, 2-dimethyl-1-propanol propionate, ethyl 3, 3-dimethylbutyrate, 2-methyl-3-pentylacetate, acetic acid- (2-methyl-pentyl ester), 4-methyl-2-pentylacetate, tert-butyl 2-methylpropionate, 2, 3-dimethyl-pentanoic acid methyl ester, 2-ethyl-pentanoic acid methyl ester, methyl-2-methylhexanoate, 2-methylpentane-2-ylacetate, tert-butyl butyrate, 3-ethyl-pentanoic acid methyl ester, methyl acetate, ethyl-2-pentyl acetate, isopropyl pivalate, isopropyl acetate, propyl 2, 2-dimethylpropionate, 2-dimethyl-1-propanol propionate, ethyl-3, 2-dimethyl-pentanoic acid methyl ester, isopropyl acetate, methyl ester, isopropyl acetate, 2, methyl ester, 2-dimethyl-methyl valerate ester, 2-methyl valerate, 2-methyl propionate, 2-methyl valerate, 2-methyl propionate, 2-methyl valerate, 2-methyl propionate, 2, ethyl 2-ethylbutyrate, sec-amyl propionate, methyl 2,3, 3-trimethylbutyrate, methyl 3, 3-dimethylpentanoate, tert-amyl propionate, methyl 2, 4-dimethylpentanoate, methyl 2,2, 3-trimethylbutyrate, 3-methyl-pentyl-2-acetate, methyl 4, 4-dimethylpentanoate, methyl 3, 4-dimethylpentanoate, isobutyl valerate, 2-methylbutyl butyrate, sec-butyl valerate, 2-pentylbutyrate, 2-methylpropyl 2-methylbutyrate, n-butyl 2-methylbutyrate, isoamylbutyrate, isobutyl isovalerate, 1-methylpentyl propionate, 1-methylhexyl acetate, sec-butyl 2-methylbutyrate, 2-methylpropionate, 2-methylbutyl 2-methylpropionate, methyl butyl acetate, methyl-butyrate, methyl-pentyl-3, 4-dimethylpentanoate, isobutyl valerate, butyl-2-methylbutyrate, butyl-2-methyl-butyrate, butyl-2-methylpropionate, methyl-butyl acetate, butyl-2-methyl-butyrate, methyl-butyl-2-methylpropionate, methyl-butyl acetate, butyl acetate, Ethyl 3-methylhexanoate, ethyl 2-methylhexanoate, 1-heptyl acetate, methyl 3-methylheptanoate, 1,2, 2-tetramethylpropyl acetate, 1-acetoxy-2, 3, 3-trimethylbutane, acetic acid- (2-ethyl-2-methyl-butyl ester), acetic acid- (3, 3-dimethyl-pentyl ester), acetic acid- (1,3, 3-trimethyl-butyl ester), 2, 4-dimethyl-3-acetoxypentane, acetic acid- (2-ethyl-3-methyl-butyl ester), acetic acid- (3-methyl-hexyl ester), acetic acid- (4-methyl-hexyl ester), isobutyric acid- (1, 2-dimethyl-propyl ester), 4-methyl-propyl valerate, 4-methyl-ethyl hexanoate, methyl 5-methyl heptanoate, sec-butyl isovalerate, isoamyl isobutyrate, butyl valerate, propyl hexanoate, hexyl propionate, methyl octanoate, 5-methyl hexyl acetate, ethyl isoamyl acetate, pentyl butyrate, ethyl heptanoate, isopropyl hexanoate, butyl 3-methylbutyrate, 2-ethyl-3-methyl valerate, methyl 2-isopropyl-3-methylbutyrate, 2-ethyl-3-methyl-ethyl butyrate, 2-ethyl valerate, methyl 2-ethyl hexanoate, ethyl 2, 4-dimethyl valerate, methyl 2, 5-dimethyl hexanoate, ethyl 4-methyl hexanoate, methyl 2, 5-dimethyl hexanoate, ethyl 5-methyl heptanoate, ethyl hexanoate, ethyl 2, 4-dimethyl valerate, ethyl 2, 5-dimethyl hexanoate, ethyl 2, ethyl hexanoate, ethyl 2, ethyl hexanoate, and ethyl hexanoate, and ethyl hexanoate, and ethyl hexanoate, Acetic acid- (1-ethyl-3-methyl-butyl ester), 4-heptyl acetate, 4-methyl-2-pentyl propionate, 5-methylhexan-2-yl acetate, 2-diethyl-butyric acid methyl ester, acetic acid- (1, 1-diethyl-propyl ester), 2, 3-dimethyl-hexanoic acid methyl ester, 2-ethyl-2-methyl-pentanoic acid methyl ester, 2-ethyl-2-methyl-butyric acid ethyl ester, ethyl 2, 2-dimethyl pentanoic acid ester, 2-dimethyl-hexanoic acid methyl ester, 2-dimethyl-butyric acid propyl ester, tert-butyl pivalate, isobutyl pivalate, butyl pivalate, acetic acid- (1, 2-dimethyl-pentyl ester), 2,4, 4-trimethyl-pentanoic acid methyl ester, acetic acid- (1-ethyl-1-methyl-butyl ester), 3-dimethyl-pentanoic acid ethyl ester, iso-butyl acid tert-amyl ester, butyric acid tert-amyl ester, 3-acetoxy-2, 2-dimethyl-pentane, propionic acid- (3, 3-dimethyl-butyl ester), isopropyl 3, 3-dimethylbutyrate, 3-dimethyl-butyric acid propyl ester, neopentyl 2-methylpropionate, butyric acid neopentyl ester, tert-butyl 3-methylbutyrate ester, valeric acid tert-butyl ester, 3, 4-trimethyl-pentanoic acid methyl ester, 4, 5-dimethyl-hexanoic acid methyl ester, ethyl 4, 4-dimethylpentanoate, 3, 4-dimethyl-pentanoic acid ethyl ester, acetic acid ethyl ester, Acetic acid- (1-isopropyl-butyl ester), 2-propyl-2-methylvalerate, methyl-6-methylheptanoate, isopropyl-2-ethylbutyrate, 2-acetoxy-4-methyl-hexane, 2,3, 3-tetramethylbutyrate, 4-methyl-heptanoate, methyl-4-ethylhexanoate, ethyl-2, 3, 3-trimethylbutyrate, 2-dimethyl-pentanol- (1) -acetate, 2, 4-dimethyl-2-pentylacetate, 2-methyl-2-hexylacetate, 4-dimethylpentylacetate, amyl isobutyrate, methyl-2-methylheptanoate, butan-2-yl 2, 2-dimethylpropionate, methyl 4, 4-dimethylhexanoate, 2-propyl-pentanoic acid methyl ester, hexanoic acid- (2, 4-dimethylmethyl ester), ethyl 2,2, 3-trimethylbutanoate, 2-methylhexylacetate, methyl-3, 4, 4-trimethylpentanoate, propyl-2-ethylbutyrate, isopropyl 2, 2-dimethylbutyrate, 3-ethyl-4-methyl-pentanoic acid methyl ester, methyl 2,2, 4-trimethylpentanoate, 2, 3-dimethyl-3-pentylacetate, pentan-3-yl 2-methylpropionate, 3-ethyl-3-methyl-pentanoic acid methyl ester, methyl 3, 4-dimethylhexanoate, methyl 4-dimethylhexanoate, ethyl-2-propylpentanoic acid methyl ester, isopropyl 2, 2-dimethylbutanoate, ethyl-4-methyl-pentanoic acid methyl ester, methyl-2, 2-methyl-2-dimethylpentanoate, ethyl-3-methyl-pentanoic acid methyl ester, ethyl-2, 2-methyl ester, 2-methyl-4-dimethylhexanoate, ethyl-methyl ester, 2-methyl-pentanoic acid, ethyl-2-methyl ester, 2-methyl ester, and mixtures thereof, 3, 3-dimethyl-1-pentyne, ethyl-3-ethyl-valerate, methyl 2,2, 3-trimethylpentanoate, methyl 2-ethyl-3, 3-dimethylpentanoate, pentan-3-ylbutyrate, 4-methyl-3-hexylacetate, 2-methyl-3-methylbutylpropionate, 3-methoxy-1-pentylpropionate, 2-pentyl 2-methylpropionate, tert-butyl 2-methylbutyrate, methyl 5, 5-dimethylhexanoate, 3-dimethyl-2-butylpropionate, 1-ethylbutylpropionate, 2-methyl-1-pentylpropionate, n-propyl 2-methylpentanoate, n-butyl 2-methylbutyrate, n-butyl 2-methylpropionate, n-butyl 2-pentyl, n-propyl 2-methylpropionate, n-pentyl, n-propyl 2-pentyl, n-pentyl, and n-pentyl, Sec-amyl valerate, sec-butyl hexanoate, 2-methylbutyl isovalerate, 2-methylbutyl valerate, ethyl 2,2, 3-trimethyl-valerate, 1-methylhexyl propionate, hexyl-2-butyrate, 2-dimethyl-3-hexyl acetate, 2-methyl-1-butyl 2-methylbutyl ester, 3-methylbutyl 2-methylbutyl ester, methyl 2, 6-dimethylheptanoate, 2-octyl acetate, 1-ethylhexyl acetate, acetic acid- (1-isopropyl-2, 2-dimethyl-propyl ester), acetic acid- (2-ethyl-3, 3-dimethyl-butyl ester), acetic acid- (2,2, 3-trimethyl-pentyl ester), Acetic acid- (2,2,3, 3-tetramethyl-butyl), acetic acid- (1,2,2, 3-tetramethyl-butyl), acetic acid- (2-isopropyl-3-methyl-butyl), acetic acid- (4-ethyl-hexyl), acetic acid- (2, 2-diethyl-butyl), 3-methyl-sec-butyl valerate, isoamyl 3-methylbutyrate, isopropyl heptanoate, 4-methyl-isobutyl valerate, 4-methyl-ethyl heptanoate, 3-methyl butyl pentanoate, butyl hexanoate, n-pentyl n-pentanoate, n-propyl heptanoate, 5-methyl-ethyl heptanoate, ethyl 6-methyl heptanoate, hexyl butyrate, ethyl octanoate, methyl 6-methyl octanoate, Heptyl propionate, methyl nonanoate, 1-octyl acetate, ethyl 2,2,3, 3-tetramethyl-butyrate, acetic acid- (1-ethyl-2, 2-dimethyl-butyl) acetate, acetic acid- (1-isopropyl-pentyl) acetate, acetic acid- (1, 2-dimethyl-hexyl), 2-isopropyl-3-methyl-butyric acid ethyl ester, propionic acid- (3, 3-dimethyl-pentyl), acetic acid- (1-ethyl-3-methyl-pentyl), 2,3, 5-trimethyl-hexanoic acid methyl ester, acetic acid- (1-ethyl-2-methyl-pentyl), propionic acid- (1-ethyl-2, 2-dimethyl-propyl) ester, Ethyl 2, 2-diethylbutyrate, isopropyl 2,2, 3-trimethyl-butyrate, acetic acid- (1-ethyl-3, 3-dimethyl-butyl ester), butyl 2, 2-dimethylbutyrate, 3-methyl-2-propyl-pentanoic acid methyl ester, 2-methyl-heptanoic acid ethyl ester, methyl 2-methyloctanoate, butyric acid- (1, 3-dimethyl-butyl ester), 3-ethyl-hexanoic acid ethyl ester, 2-ethyl-2-methyl-pentanoic acid ethyl ester, ethyl 3, 5-dimethylhexanoate, 3-dimethyl-pentanoic acid propyl ester, 2,4, 4-tetramethyl-pentanoic acid methyl ester, ethyl 2, 2-dimethyl-hexanoate ester, ethyl 2, 3-trimethyl-butanoate ester, ethyl 2, 2-dimethyl-butyl ester, ethyl 2, 2-dimethyl-pentanoic acid methyl ester, 3-methyl ester, ethyl 2, 3-dimethyl-pentanoic acid, ethyl 2, 2-dimethyl-pentanoic acid, ethyl ester, ethyl 2, 2-dimethyl-pentanoic acid, ethyl ester, ethyl 2,2, 3-dimethyl-pentanoic acid, ethyl ester, ethyl hexanoic acid, ethyl ester, and the like, ethyl ester, and the like, Butyric acid- (2-ethyl-butyl ester), 2-ethyl-4-methyl-pentanoic acid ethyl ester, ethyl 2-propylpentanoic acid ester, methyl 2-propylhexanoic acid ester, ethyl 2-ethylhexanoic acid ester, acetic acid- (1, 1-diethyl-butyl ester), 2, 5-dimethyl-hexanoic acid ethyl ester, ethyl 4, 5-dimethyl hexanoic acid ester, acetic acid- (1-isobutyl-butyl ester), acetic acid- (1-ethyl-4-methyl-pentyl ester), acetic acid- (1-methyl-1-propyl-butyl ester), isopentyl acid tert-pentyl ester, 3-propyl-hexanoic acid methyl ester, 3-ethyl-heptanoic acid methyl ester, acetic acid- (1,1, 4-trimethyl-pentyl ester), Acetic acid- (1, 5-dimethyl-hexyl ester), 3-methyl-heptanoic acid ethyl ester, 3, 5-trimethyl-hexanoic acid methyl ester, 3-dimethyl-heptanoic acid methyl ester, 3-dimethyl-isopropyl valerate, 2-ethylhexyl acetate, ethyl 2,4, 4-trimethyl valerate, butyl pivalate, neopentyl pivalate, isoamyl pivalate, tert-butyl 2-ethyl-butyrate, sec-butyl 3, 3-dimethyl-butyrate, acetic acid- (1, 4-dimethylbutyl) ester, sec-amyl isovalerate, 3-acetoxy-2, 4-dimethylhexane, 3-diethyl-pentanoic acid methyl ester, methyl-4, 4-dimethyl heptanoic acid ester, ethyl 3,3, 5-trimethyl-hexanoate, 3-dimethyl-heptanoic acid methyl ester, 3-dimethyl-isopropyl ester, 2-ethylhexyl acetate, ethyl 2,4, 4-trimethyl pentanoic acid butyl ester, neopentyl ester, isopentyl ester, and mixtures thereof, Methyl 3,5, 5-trimethylhexanoate, 4 octyl acetate, methyl 3, 5-dimethyl-heptanoate, 1-acetoxy-4, 4-dimethyl-hexane, pentyl 3-methylbutyrate, methyl 7-methyloctanoate, methyl 2-ethyl-heptanoate, methyl 2, 4-dimethyl-heptanoate, methyl 2, 2-dimethyl-heptanoate, pentyl 2, 2-dimethyl-propionate, ethyl 2,3, 4-trimethylpentanoate, tert-butyl hexanoate, 3-acetoxy-2, 5-dimethyl-hexane, 1,3, 3-tetramethylbutyl acetate, 2, 4-trimethylpentyl acetate, methyl 2,2,3, 3-tetramethylpentanoate, pentanoic acid- (2,2,3, 4-tetramethyl-methyl ester), 2-propyl-2-methyl-pentanoic acid methyl ester, 1-dimethylethyl 3, 3-dimethylbutyrate, tert-butyl 4-methylpentanoate, 2-isopropyl-3, 3-dimethyl-butanoate, methyl 2-ethyl-2-methylhexanoate, ethyl 2-ethyl-3, 3-dimethylbutyrate, hexyl isobutyrate, methyl-5, 5-dimethylheptanoate, methyl-2, 3, 4-trimethylhexanoate, methyl 2, 3-dimethyl-2-ethylpentanoate, methyl 3-methyloctanoate, 2-dimethylhexylacetate, propyl neoheptanoate, isopropyl 2-methylhexanoate, methyl hexanoate, ethyl-2-methyl-pentanoate, ethyl-2-methyl-hexanoate, ethyl-2-ethyl-3, 3-dimethyl-butyrate, hexyl-5, 5-dimethyl-heptanoate, methyl-2, 2-methyl-hexanoate, ethyl-2-methyl-pentanoate, ethyl-methyl-2-methyl-hexanoate, ethyl-2-ethyl-methyl-hexanoate, ethyl-2-ethyl hexanoate, ethyl-2-ethyl hexanoate, ethyl-2, ethyl-ethyl hexanoate, ethyl-ethyl hexanoate, and ethyl hexanoate, 2-propyl-pentyl-acetate, butyl 2-ethylbutyrate, methyl 4-methyloctanoate, 2-methylpentanoic acid- (1-methylpropyl) ester, methyl 2,2, 4-trimethyl-hexanoate, hexanoic acid- (2,2, 5-trimethyl-methyl) ester, 4-methylpentylisobutyrate, 3-methylpentylbutyrate, ethyl 3,3, 4-trimethylpentanoate, pentanoic acid- (3,4, 4-trimethyl-ethyl) ester, tert-amyl pivalate, isobutyl 3, 3-dimethylbutyrate, 1-isopropyl-1, 2-dimethylpropylacetate, ethyl 4-ethylhexanoate, methyl 2-ethyl-3, 3-dimethylpentanoate, methyl 3, 6-dimethylheptanoate, isobutyl hexanoate, methyl 3,3,4, 4-tetramethylvalerate, butyl 2-methylpentanoate, pentyl 2-methylbutyrate, neopentyl 2-methylbutyrate, ethyl 3, 3-dimethylhexanoate, 4-ethyl-3-hexylacetate, 2, 4-dimethylpentan-3-ylpropionate, methyl neononanoate, methyl 4,4, 5-trimethylhexanoate, methyldiisopropylpropionate, 1-methylethyl 4-methylhexanoate, 1-ethylbutyl butyrate, 1-ethylpentylpropylpropionate, pentan-3-ylvalerate, methyl 4-ethylheptanoate, pentan-3-yl 3-methylbutyrate, ethyl 5, 5-dimethylhexanoate, ethyl 2-methylpentanoate, pentyl 2-methylbutyrate, 2-methylbutanoate, neopentyl 2-methylbutyrate, neopentyl 2-dimethylhexanoate, methyl-4, 5-dimethylhexanoate, 1-ethylbutyl butyrate, 1-ethylpentylpropropionate, 2-ethylpentanoate, 2-dimethylpentanoate, 2-methylpropanoate, methyl-4-methylpropanoate, methyl-4-methyl-propionate, methyl-diisopropylpropionate, methyl propionate, methyl-ethyl-4-ethyl-propyl propionate, 2-ethyl-propyl propionate, 2-propyl propionate, and ethyl-propyl propionate, 2-methyl-3-methylbutyrate, neryl acetate, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether acetate, and the like, but in one embodiment of the present invention, tert-butyl acetate, sec-butyl acetate, isobutyl acetate, n-butyl acetate, 2-methylbutyl acetate, 2-pentylacetate, neopentyl acetate, 3-methylbutan-2-ylacetate, isoamyl acetate, n-pentylacetate, tert-pentylacetate, 3-pentylacetate, 2-hexylacetate, 3-methylpentyl3-acetate, 3-hexylacetate, 2, 3-dimethyl-2-butylacetate, 2-ethylbutylacetate, 2, 3-dimethylbutylacetate, and the like are preferably used in terms of excellent brightness and color reproducibility, 3-methyl-1-pentylacetate, 3-dimethylbutylacetate, n-hexyl acetate, 4-methyl-1-pentylacetate, 2-methyl-3-pentylacetate, 4-methyl-2-pentylacetate, 2-methylpentane-2-ylacetate, 1-methylhexylacetate, 1-heptylacetate, 1,2, 2-tetramethylpropylacetate, 5-methylhexylacetate, ethylisopentylacetate, 4-heptylacetate, 5-methylhexan-2-ylacetate, 2, 4-dimethyl-2-pentylacetate, 2-methyl-2-hexylacetate, 4-dimethylpentylalcetate, 4-methyl-3-hexyl acetate, 2-octyl acetate, 1-ethylhexyl acetate, 1-octyl acetate, 2-ethylhexyl acetate, 1,3, 3-tetramethylbutyl acetate, 2, 4-trimethylpentyl acetate, 2-dimethylhexyl acetate, 1-isopropyl-1, 2-dimethylpropyl acetate, 4-ethyl-3-hexyl acetate, dipropylene glycol dimethyl ether or dipropylene glycol methyl ether acetate.
The solvents mentioned above may be used either individually or in combination of two or more.
The content of the solvent may be 5 to 95 wt%, preferably 20 to 90 wt%, and more preferably 30 to 80 wt% with respect to 100 wt% of the entire quantum dot dispersion. When the content of the solvent is less than the above range, the dispersibility may deteriorate, and when the content is more than the above range, the solid content of the resin composition may be difficult to adjust.
The solvent of the quantum dot dispersion liquid of the present invention satisfies the above-described conditions of the solvent as a whole, that is, the hansen solubility parameter of the above numerical formula 1, and satisfies the conditions of not including a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent, and an aliphatic hydrocarbon solvent. Therefore, according to an embodiment of the present invention, even if the individual solvent component in the quantum dot dispersion liquid of the present invention does not satisfy the hansen solubility parameter of the above numerical formula 1, the solvent including the individual solvent as a whole satisfies the hansen solubility parameter of the numerical formula 1.
In an embodiment of the present invention, the quantum dot dispersion may further include a phosphate ester compound. When the phosphate ester compound is further contained, there are advantages in that dispersibility of the quantum dot and the solvent is improved and quantum efficiency is excellent, and there is an advantage in that deterioration in light efficiency and deterioration in light-sensitive characteristics can be suppressed. Further, the self-luminous photosensitive resin composition has an advantage of excellent compatibility with other components constituting the self-luminous photosensitive resin composition.
The phosphate compound may be present in a phosphate ((HO)2PO (OR)) or phosphoric acid (H)3PO4) The hydroxyl group or the hydrogen atom of the hydroxyl group may be substituted or unsubstituted with other functional groups. For example, the phosphate ester compound may be composed of (H)2PO3 -) The form is not limited to this. In the present invention, the "phosphate ester" 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 phosphate ester compound may further contain one or more of a polyether moiety, a polyester moiety and a phosphate group in one molecule.
In the present invention, the term "poly-" may mean a compound comprising a large number of repeating units, and the term "polyether moiety" and "polyester moiety" may mean a moiety comprising 1 to 20 repeating units each comprising an ether group or an ester group. In the present invention, the number of repeating units is preferably 5 to 20, more preferably 10 to 20, and in this case, the compatibility is excellent.
The phosphate ester compound has an advantage of improving compatibility with an alkali-soluble resin described later when the phosphate ester compound further contains a polyether moiety in one molecule, and an advantage of improving compatibility with an alkali-soluble resin and solubility characteristics in an alkali developing solution when the phosphate ester compound further contains a polyester moiety in one molecule. When the phosphate ester compound further contains a phosphate group in one molecule, the phosphate ester compound has an advantage that the phosphate ester compound can be adsorbed on the surface of the quantum dot to exhibit a protective layer function and can depolymerize the quantum dot.
Preferably, the phosphate ester-based compound of the present invention may include a polyether moiety, a polyester moiety and a phosphate group in one molecule, and in this case, the quantum dots are depolymerized to reduce the dispersion particle size, and have compatibility with an alkali-soluble resin and solubility characteristics with an alkali developing solution, and thus have an advantage of facilitating pattern formation, and are most preferable.
In the present invention, the "acid value" refers to a value measured as the amount (mg) of potassium hydroxide required for neutralizing 1g of the acrylic polymer, which can interfere with the solubility in the self-luminous photosensitive resin composition described later. When the acid value of the phosphate ester compound is 10(KOHmg/g) or more, specifically 10 to 200 (KOHmg), it is preferable from the viewpoint of the development rate of the self-luminous photosensitive resin composition containing the surface treatment agent. When the acid value is less than the above range, it may be difficult to secure a sufficient developing speed, and when the acid value is more than the above range, adhesion to a substrate is decreased, short-circuiting of a pattern is likely to occur, and storage stability of the entire composition is lowered, and a problem of increase in viscosity may occur, and therefore, it is preferable to satisfy the above range.
The content of the phosphate ester compound may be 1 to 300 parts by weight, preferably 3 to 250 parts by weight, and more preferably 5 to 200 parts by weight, based on 100 parts by weight of the entire solid content of the quantum dot. When the content of the surface treatment agent is within the above range, the quantum dot is preferable because the decondensation effect is excellent, the precipitation phenomenon due to the difference in polarity in the quantum dot dispersion liquid of the present invention and the self-luminous photosensitive resin composition containing the same can be suppressed, and the quantum dot dispersion liquid can function as a protective layer for the quantum dot during the production process of the color filter.
When the content of the phosphate ester compound is less than the above range, the effect of the quantum dot on the resolution may be reduced, and when the content is more than the above range, the development property of the self-luminous photosensitive resin composition containing the quantum dot dispersion may be reduced, and therefore, the content is preferably within the above range.
< self-luminous photosensitive resin composition >
Another embodiment of the present invention relates to a self-luminous photosensitive resin composition including the quantum dot dispersion liquid 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.
The self-luminous photosensitive resin composition of the present invention may contain the quantum dot dispersion in an amount of 3 to 80 wt%, preferably 5 to 70 wt%, more preferably 10 to 60 wt%, based on 100 wt% of the total self-luminous photosensitive resin composition. When the self-luminous photosensitive resin composition of the present invention contains the quantum dot dispersion liquid within the above range, there is an advantage that a color filter having excellent light emission characteristics can be produced. When the content of the quantum dot dispersion is less than the above range, the emission characteristics may be degraded, and when the content of the quantum dot dispersion is greater than the above range, the pattern formation may be difficult and the reliability may be degraded as the content of other components is relatively reduced, and therefore, the content is preferably included in the above range.
The self-luminous photosensitive resin composition of the present invention may further comprise an alkali-soluble resin.
The alkali-soluble resin is capable of making the non-exposed part of the color filter manufactured by the self-luminous photosensitive resin composition alkali-soluble and capable of being removed, and the exposed area is left. In addition, when the self-luminous photosensitive resin composition includes the alkali-soluble resin, the quantum dots can be uniformly dispersed in the composition, and the quantum dots can be protected during the process to maintain the brightness.
The alkali-soluble resin of the present invention may be an alkali-soluble resin having an acid value of 50 to 200 (KOHmg/g). The "acid value" is a value measured as the amount (mg) of potassium hydroxide required for neutralizing 1g of the acrylic polymer, and interferes with solubility. When the acid value of the alkali-soluble resin is less than the above range, it is difficult to secure a sufficient development rate, and when the acid value exceeds the above range, adhesion to a substrate is reduced, short-circuiting of a pattern is likely to occur, and there is a problem that storage stability of the entire composition is lowered and viscosity is increased.
In addition, in order to increase the surface hardness when used as a color filter, it is considered that the molecular weight and the molecular weight distribution (Mw/Mn) are limited. Preferably, the polymer is used as it is or purchased for use in a manner such that the weight average molecular weight is 3,000 to 30,000, preferably 5,000 to 20,000, and the molecular weight distribution is in the range of 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having a molecular weight and a molecular weight distribution within the above ranges can not only improve the hardness already mentioned and have a high film retention rate, but also be excellent in solubility of non-exposed portions in a developer and can improve resolution.
The alkali-soluble resin contains one or more selected from the group consisting of a polymer of a carboxyl group-containing unsaturated monomer, a copolymer with a monomer having an unsaturated bond copolymerizable with the carboxyl group-containing unsaturated monomer, and a combination thereof.
In this case, the carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, an unsaturated tricarboxylic acid, or the like. Specific examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, α -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 be a mono (2-methacryloyloxyalkyl) ester thereof, and examples thereof include mono (2-acryloyloxyethyl) succinate, mono (2-methacryloyloxyethyl) succinate, mono (2-acryloyloxyethyl) phthalate, and mono (2-methacryloyloxyethyl) phthalate. The unsaturated polycarboxylic acid may be a mono (meth) acrylate of a dicarboxylic polymer at both ends thereof, and examples thereof include ω -carboxy polycaprolactone monoacrylate, ω -carboxy polycaprolactone monomethacrylate and the like. These carboxyl group-containing monomers may be used either individually or as a mixture of two or more thereof.
Further, the monomer copolymerizable with the carboxyl group-containing unsaturated monomer may be one selected from the group consisting of aromatic vinyl compounds, unsaturated carboxylic acid ester compounds, unsaturated carboxylic acid aminoalkyl ester compounds, unsaturated carboxylic acid glycidyl ester compounds, carboxylic acid vinyl ester compounds, unsaturated ether compounds, vinyl cyanide compounds, unsaturated imide compounds, aliphatic conjugated diene compounds, macromonomers having a monoacryl group or a monomethacryl group at the terminal of the molecular chain, bulky monomers, and combinations thereof.
More specifically, as the copolymerizable monomer, aromatic vinyl compounds such as styrene, α -methylstyrene, o-vinyltoluene, m-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether, and indene; methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, n-butyl acrylate, isopropyl acrylate, isobutyl acrylate, butyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylate, methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxypropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, and mixtures thereof, Unsaturated carboxylic acid esters such as dicyclopentadienyl methacrylate, adamantyl (meth) acrylate, norbornyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, and glycerol monomethacrylate; aminoalkyl ester compounds of unsaturated carboxylic acids such as 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate, and 3-dimethylaminopropyl methacrylate; unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate; vinyl carboxylate 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, α -chloroacrylonitrile, and dicyanovinylene; unsaturated amides such as acrylamide, methacrylamide, α -chloroacrylamide, N-2-hydroxyethylacrylamide, and N-2-hydroxyethylmethacrylamide; unsaturated imide compounds such as maleimide, benzylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide; aliphatic conjugated dienes such as 1, 3-butadiene, isoprene and chloroprene; and macromonomers having a monoacryloyl group or a monomethacryloyl group at the terminal of the polymer molecular chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, polysiloxane; 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.
The alkali-soluble resin may be contained in an amount of 5 to 80 wt%, specifically 10 to 70 wt%, more specifically 15 to 60 wt% based on 100 wt% of the total solid content of the self-luminous photosensitive resin composition. When the content of the alkali-soluble resin is within the above range, the solubility in a developer is sufficient and a pattern is easily formed, and the film reduction of the pixel portion of the exposed portion is prevented during development and the peeling of the pixel portion is improved, which is preferable. In the case where the content of the alkali-soluble resin is less than the above range, a non-pixel portion may be peeled off, and in the case where the content of the alkali-soluble resin is more than the above range, solubility in a developer may be reduced and pattern formation may be difficult.
The photopolymerizable compound that can be further contained in the self-luminous photosensitive resin composition of the present invention is a compound that can be polymerized by the action of light and a photopolymerization initiator described later, and examples thereof include monofunctional monomers, difunctional monomers, and other polyfunctional monomers.
The monofunctional monomer is not particularly limited in kind, and examples thereof include nonylphenylcarbinol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, and N-vinylpyrrolidone.
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) acrylate, triethylene glycol di (meth) acrylate, bis (acryloyloxyethyl) ether of bisphenol a, 3-methylpentanediol di (meth) acrylate, and the like.
The polyfunctional monomer is not particularly limited in kind, and examples thereof include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipentaerythritol hexa (meth) acrylate, and the like. Among them, a polyfunctional monomer having two or more functions is preferably used.
The content of the photopolymerizable compound may be 5 to 70 wt%, specifically 10 to 60 wt%, more specifically 15 to 50 wt% with respect to 100 wt% of the total solid content of the self-luminous photosensitive resin composition. When the content of the photopolymerizable compound is within the above range, the photopolymerizable compound has an advantage that it is preferable in terms of the strength and smoothness of the pixel portion. When the content of the photopolymerizable compound is less than the above range, the intensity of the pixel portion may decrease, and when the content of the photopolymerizable compound is more than the above range, the smoothness may decrease, and therefore, the content is preferably included in the above range.
The self-luminous photosensitive resin composition of the present invention may further contain a photopolymerization initiator, and the kind of the photopolymerization initiator is not particularly limited as long as the photopolymerization initiator can polymerize the photopolymerizable compound. In particular, from the viewpoint of polymerization characteristics, initiation efficiency, absorption wavelength, availability, price, and the like, it is preferable to use one or more compounds selected from the group consisting of acetophenone compounds, benzophenone compounds, triazine compounds, bisimidazole compounds, oxime compounds, and thioxanthone compounds as the photopolymerization initiator.
Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzildimethylketal, 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl ] -2-methylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2-methyl-1- (4-methylphenylsulfanyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl ] propan-1-one, and mixtures thereof, 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one, and the like.
Examples of the benzophenone-based compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4 ' -methyldiphenyl sulfide, 3 ', 4,4 ' -tetrakis (t-butylperoxycarbonyl) benzophenone, and 2,4, 6-trimethylbenzophenone.
Specific examples of the triazine compound include 2, 4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6- (4-methoxynaphthyl) -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6-piperonyl-1, 3, 5-triazine, 2, 4-bis (trichloromethyl) -6- (4-methoxystyryl) -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6- [2- (5-methylfuran-2-yl) ethylene ] -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6- [2- (furan-2-yl) ethylene ] -1,3, 5-triazine, and 2, 4-bis (trichloromethyl) -6- [2- (furan-2- Yl) ethylene ] -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethylene ] -1,3, 5-triazine, 2, 4-bis (trichloromethyl) -6- [2- (3, 4-dimethoxyphenyl) ethylene ] -1,3, 5-triazine, and the like.
Specific examples of the biimidazole-based compound include 2,2 ' -bis (2-chlorophenyl) -4,4 ', 5,5 ' -tetraphenylbiimidazole, 2 ' -bis (2, 3-dichlorophenyl) -4,4 ', 5,5 ' -tetraphenylbiimidazole, 2 ' -bis (2-chlorophenyl) -4,4 ', 5,5 ' -tetrakis (alkoxyphenyl) biimidazole, 2,2 '-bis (2-chlorophenyl) -4, 4', 5,5 '-tetrakis (trialkoxyphenyl) biimidazole, 2-bis (2, 6-dichlorophenyl) -4, 4', 5,5 '-tetraphenyl-1, 2' -biimidazole, or imidazole compounds in which the phenyl group at the 4,4 ', 5, 5' position is substituted with an alkoxycarbonylyl group, and the like. Among them, 2 ' -bis (2-chlorophenyl) -4,4 ', 5,5 ' -tetraphenyl biimidazole, 2 ' -bis (2, 3-dichlorophenyl) -4,4 ', 5,5 ' -tetraphenyl biimidazole, 2-bis (2, 6-dichlorophenyl) -4,4 ', 5,5 ' -tetraphenyl-1, 2 ' -biimidazole are preferably used.
Specific examples of the oxime compounds include o-ethoxycarbonyl- α -oxyimino-1-phenylpropan-1-one, and typical commercially available products include Irgacure OXE 01 and OXE02 from basf.
Examples of the thioxanthone-based compound include 2-isopropylthioxanthone, 2, 4-diethylthioxanthone, 2, 4-dichlorothioxanthone, and 1-chloro-4-propoxythioxanthone.
The content of the photopolymerization initiator may be 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-luminous photosensitive resin composition. When the content of the photopolymerization initiator is within the above range, the self-luminous photosensitive resin composition is preferably high in sensitivity and short in exposure time, so that productivity can be improved and high resolution can be maintained. Further, the self-luminous photosensitive resin composition of the present invention has an advantage that the intensity of a pixel portion formed using the self-luminous photosensitive resin composition of the present invention and the smoothness of the surface of the pixel portion are improved.
In order to improve the sensitivity of the self-luminous photosensitive resin composition of the present invention, the photopolymerization initiator may further comprise a photopolymerization initiation aid. When the photopolymerization initiation assistant is contained, there is an advantage that the sensitivity is further increased and the productivity is improved.
The photopolymerization initiation assistant may preferably be one or more compounds selected from the group consisting of, for example, amine compounds, carboxylic acid compounds, and organic sulfur compounds having a thiol group, but is not limited thereto.
As the amine compound, an aromatic amine compound is preferably used, and specifically, aliphatic amine compounds such as triethanolamine, methyldiethanolamine, triisopropanolamine and the like, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N-dimethyl-p-toluidine, 4 ' -bis (dimethylamino) benzophenone (known as Michler's ketone), 4 ' -bis (diethylamino) benzophenone and the like can be used.
The carboxylic acid compound is preferably an aromatic heteroacetic acid, and specific examples thereof include 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, naphthyloxyacetic acid and the like.
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-mercaptobutoxyethyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptobutyrate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexa (3-mercaptopropionate), tetraethyleneglycol bis (3-mercaptopropionate), and the like.
The photopolymerization initiator can be used by adding it as needed within a range not to impair the effects of the present invention.
The additional solvent that the self-luminous photosensitive resin composition of the present invention may further contain is not particularly limited, and may contain an organic solvent generally used in the art, and may be the same as or different from the solvent contained in the quantum dot dispersion of the present invention.
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 glycerol; esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate, and cyclic esters such as γ -butyrolactone.
The additional solvent is preferably an organic solvent having a boiling point of 100 to 200 ℃ among the additional solvents, more preferably an ester such as alkylene glycol alkyl ether acetate, a ketone, ethyl 3-ethoxypropionate, or methyl 3-methoxypropionate, and even more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethyl 3-ethoxypropionate, or methyl 3-methoxypropionate, from the viewpoint of coatability and drying property. These additional solvents may be used alone or in combination of two or more.
The content of all solvents (the solvent in the quantum dot dispersion liquid and the additional solvent) contained in the self-luminous photosensitive resin composition of the present invention may be 20 to 90% by weight, preferably 25 to 85% by weight, and more preferably 30 to 80% by weight, based on 100% by weight of the total self-luminous photosensitive resin composition. When the content of all the solvents is within the above range, the coating properties are preferably improved when the coating is performed by a coating apparatus such as a roll coater, a spin coater, a slit coater (also referred to as a die coater), or an ink jet printer. When the total solvent content is less than the above range, the coating property may be deteriorated, which may make the process difficult, and when the total solvent content is more than the above range, the performance of the color filter formed from the self-luminous photosensitive resin composition may be deteriorated.
The self-luminous photosensitive resin composition of the present invention may further contain additives such as an adhesion promoter and a surfactant in order to increase the coatability and adhesion.
The adhesion promoter may be added to improve adhesion to the substrate, and 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, but is not limited thereto. Examples of the silane coupling agent include trimethoxysilylbenzoic acid, gamma-methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxysilane, gamma-isocyanatopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane and the like, and these may be used alone or in combination of two or more.
When the self-luminous photosensitive resin composition of the present invention contains the surfactant, there is an advantage that the coating property can be improved. For example, fluorine-based surfactants such as BM-1000, BM-1100(BM Chemie), Fluorad FC-135/FC-170C/FC-430 (Sumitomo 3M), SH-28PA/-190/SZ-6032 (Toray Silicone) can be used as the surfactant, but the surfactant is not limited thereto.
In addition, the self-luminous photosensitive resin composition of the present invention may further contain additives such as an antioxidant, an ultraviolet absorber, and an anti-coagulant agent within a range not to impair the effects of the present invention, and the above additives may be appropriately added and used by those skilled in the art within a range not to impair the effects of the present invention. 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-luminous photosensitive resin composition, but is not limited thereto.
< color filter >
Still another embodiment of the present invention relates to a color filter produced using the self-luminous photosensitive resin composition.
The color filter of the present invention includes a cured product of the self-luminous photosensitive resin composition containing the quantum dot dispersion of the present invention, and thus has an advantage that quantum dot particles are uniformly dispersed and have excellent light emission characteristics.
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 the color filter is located in 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 polyether sulfone (PES), Polycarbonate (PC), or the like.
The above-mentioned pattern layer as a layer containing the self-luminous photosensitive resin composition of the present invention may be a layer formed by applying the above-mentioned self-luminous photosensitive resin composition and performing exposure, development and heat curing in a predetermined pattern. The above-described pattern layer may be formed by performing a method generally 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 the patterns, or may further include a black matrix, but is not limited thereto.
In addition, the color filter may further include a protective film formed on the upper portion of the pattern layer of the color filter.
The color filter may include one or more layers 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 one or more layers selected from the group consisting of a red pattern layer including red quantum dots, a green pattern layer including green quantum dots, and a blue pattern layer including blue quantum dots 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, and in this case, the light emitted from the light source is not particularly limited, but a light source emitting blue light may be used in view of more excellent color reproducibility.
The color filter may include only two color pattern layers of a red pattern layer, a green pattern layer, and a blue pattern layer, but is not limited thereto. In the case where the color filter includes only two color pattern layers, the pattern layer may further include a transparent pattern layer not including the quantum dot particles.
In the case where the color filter includes only the pattern layers of the two colors, a light source that emits light having a wavelength that displays a color other than the two colors may be used. For example, in the case where the color filter includes a red pattern layer and a green pattern layer, a light source that emits blue light may be used, and in this case, the red quantum dots emit red light and the green quantum dots emit green light, and the transparent pattern layer may display blue light by direct transmission of the blue light emitted from the light source.
< image display device >
Another embodiment of the present invention relates to an image display device including the color filter.
The color filter of the present invention can be applied 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 of the present invention has an effect of excellent light emission characteristics by including a color filter produced from a cured product of the self-luminous photosensitive resin composition containing the quantum dot dispersion liquid of the present invention.
The image display device may further include a light source emitting blue light and a transparent pattern layer, and the light source emitting blue light and the transparent pattern layer may be applied to the above.
Hereinafter, the present specification will be described in detail with reference to examples. However, the embodiments of the present description may be modified into various other forms, and the scope of the present description should not be construed as being limited to the embodiments described in detail below. The embodiments of the present description are provided to more fully describe the present description to those of ordinary skill in the art. In addition, "%" and "part(s)" representing the contents are on a weight basis if not specifically mentioned below.
Production examples 1 to 2
Production example 1: production of Quantum dot Dispersion
Quantum dot dispersions were produced by mixing the components (quantum dots and solvent) and the contents described in table 1 below, and hansen solubility parameters of the production examples (production examples 1-1 to 1-11) are also described in table 1 below.
[ Table 1]
Production example 2: production of alkali-soluble resins
A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen gas inlet tube was prepared, and after charging 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 t-butyl peroxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate (hereinafter referred to as "PGMEA"), a monomer dropping funnel was prepared by stirring and mixing, and 6 parts by weight of N-dodecylmercaptan and 24 parts by weight of PGMEA were added and mixed by stirring to prepare a chain transfer agent dropping funnel.
Thereafter, 395 parts by weight of PGMEA was introduced into the flask, the atmosphere in the flask was replaced with nitrogen gas from the air, and the temperature of the flask was raised to 90 ℃ while stirring. Subsequently, dropping of the monomer and the chain transfer agent from the dropping funnel was started. During the dropping, the temperature was raised to 110 ℃ for 3 hours after 1 hour while maintaining 90 ℃ for 2 hours, and then introduced into a gas introduction tube to start bubbling of an oxygen/nitrogen (5/95 (v/v) mixed gas.
Then, 10 parts by weight of glycidyl methacrylate, 0.4 part by weight of 2, 2' -methylenebis (4-methyl-6-tert-butylphenol) and 0.8 part by weight of triethylamine were put into a flask, and the reaction was continued at 110 ℃ for 8 hours, after which the reaction was cooled to room temperature to obtain an alkali-soluble resin having a solid content of 29.1% by weight, a weight-average molecular weight of 32,000 and an acid value of 114 mgKOH/g.
Production example 3: manufacture of color filters
A color filter was produced using the self-luminous photosensitive resin compositions produced in examples 1 to 7 and comparative examples 1 to 4. Specifically, each of the self-luminous photosensitive resin compositions was applied to a glass substrate by a spin coating method, and then placed on a hot plate and maintained at a temperature of 100 ℃ for 3 minutes to form a thin film. Next, a film having a thickness of 20mm was placed on the above film. Next, ultraviolet rays were irradiated to a test photomask having a large square transmission pattern and a small line/space pattern of 1 to 100 squares with a distance of 100 from the test photomask.
In this case, an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Nikou electric company was used as the ultraviolet light source, and the ultraviolet light source was set at 200mJ/cm in the atmosphere2The exposure amount (365nm) of (A) was determined, and no special optical filter was used. The film irradiated with ultraviolet light was immersed in a KOH aqueous solution developing solution having a pH of 10.5 for 80 seconds to be developed. A glass to which the thin film is to be appliedThe glass plate was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 ℃ for 10 minutes, thereby manufacturing a color filter pattern. The film thickness of the self-luminous color filter pattern manufactured as described above was 3 μ thick.
Examples 1 to 7 and comparative examples 1 to 4
The self-luminous photosensitive resin composition was produced according to the components and contents shown in table 2 below. [ Table 2]
Examples of the experiments
Experimental example 1: quantum dot dispersion liquid and measurement of dispersion particle size of self-luminous photosensitive resin composition
The dispersion particle size was measured using an ELSZ-2000ZS (manufactured by tsukamur corporation) and is shown in table 3 below. The more the quantum dot particles are aggregated, the larger the dispersion particle size.
Experimental example 2: determination of the luminescence Intensity (Intensity)
The emission intensity of the color filter produced in production example 3 was measured in the 550nm region using a spectroscope (produced by Ocean Optics) and is shown in table 3 below. It was judged that the higher the measured emission intensity, the more excellent self-emission characteristics were exhibited.
[ Table 3]
Referring to table 3 above, it was confirmed that the dispersion particle size was smaller in the case of the quantum dot dispersion liquid of the present invention and the self-luminous photosensitive resin composition containing the quantum dot dispersion liquid of the present invention (examples 1 to 7) than in the case of the self-luminous photosensitive resin composition not containing the quantum dot dispersion liquid of the present invention and the self-luminous photosensitive resin composition containing the quantum dot dispersion liquid of the present invention (comparative examples 1 to 3). Further, it was confirmed that the emission intensity was superior in the case of the color filter including the cured product of the self-luminous photosensitive resin composition of the present invention (examples 1 to 7) compared to the case without the cured product of the self-luminous photosensitive resin composition of the present invention (comparative examples 1 to 3).
In particular, it was confirmed that the quantum dot dispersion, the self-luminous photosensitive resin, and the color filter produced by using the same according to the present invention (examples 1 to 7) do not contain components (chloroform and the like) harmful to the human body, and exhibit effects similar to those of the conventional case (comparative example 4) in which chloroform is used.
Claims (9)
1. A quantum dot dispersion liquid comprising quantum dots and a solvent, wherein the solvent satisfies the condition of Hansen solubility parameter of the following formula 1 and does not contain a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent,
the solvent comprises a solvent selected from the group consisting of tert-butyl acetate, sec-butyl acetate, 2-methylbutyl acetate, 2-pentyl acetate, neopentyl acetate, 3-methylbutan-2-ylacetate, n-pentyl acetate, tert-pentyl acetate, 3-pentyl acetate, 2-hexyl acetate, 3-methylpentyl 3-acetate, 3-hexyl acetate, 2, 3-dimethyl-2-butylacetate, 2-ethylbutylacetate, 2, 3-dimethylbutylacetate, 3-methyl-1-pentylacetate, 3-dimethylbutylacetate, 4-methyl-1-pentylacetate, 2-methyl-3-pentylacetate, 4-methyl-2-pentylacetate, 2-methyl-3-pentylacetate, 2-methyl-2-pentylacetate, 2-pentyl-ethyl-3-methylacetate, 2-pentyl-methylacetate, 2-methylacetate, 3-pentyl-acetate, 3-methylacetate, 2-methylacetate, and mixtures thereof, 2-methylpentane-2-ylacetate, 1-methylhexylacetate, 1-heptylacetate, 1,2, 2-tetramethylpropylacetate, 5-methylhexylacetate, ethylisoamylacetate, 4-heptylacetate, 5-methylhexan-2-ylacetate, 2, 4-dimethyl-2-pentylacetate, 2-methyl-2-hexylacetate, 4-dimethylpentylacetate, 4-methyl-3-hexylacetate, 2-octyl acetate, 1-ethylhexylacetate, 1-octyl acetate, 1,3, 3-tetramethylbutylacetate, 2,2, 4-trimethylpentylacetate, 2, 2-dimethylhexylacetate, 2-ethylhexylacetate, 2-dimethylhexylacetate, 2-hexylacetate, 5-dimethylhexylacetate, 2-hexylacetate, 2-dimethylhexylacetate, 2-dimethylester, 2-hexylacetate, 2-dimethylhexylacetate, 2-hexylacetate, 2-dimethylester, 2-hexylacetate, and a-hexylacetate, 2-dimethylester, 2-hexylacetate, and a, 1-isopropyl-1, 2-dimethylpropyl acetate and 4-ethyl-3-hexyl acetate,
[ numerical formula 1]
δd≥14
2≤δp≤6
2≤δh≤8
In the above-mentioned numerical formula 1,
δdrefers to the dispersion component (δ)pRefers to the polar component, δhRefers to a hydrogen bonding component.
2. The quantum dot dispersion of claim 1, further comprising an organic ligand comprising one or more selected from the group consisting of C5-C20 alkyl carboxylic acids, alkenyl carboxylic acids, alkynyl carboxylic acids, phosphines, phosphine oxides, and thiols.
3. The quantum dot dispersion of claim 1, further comprising a phosphate-based compound.
4. The quantum dot dispersion liquid according to claim 1, wherein the content of the quantum dot is 5 to 70 wt% with respect to 100 wt% of the entire quantum dot dispersion liquid.
5. The quantum dot dispersion liquid according to claim 1, wherein the solvent is contained in an amount of 5 to 95 wt% based on 100 wt% of the entire quantum dot dispersion liquid.
6. A self-luminous photosensitive resin composition comprising the quantum dot dispersion liquid according to any one of claims 1 to 5 and at least one selected from the group consisting of alkali-soluble resins, photopolymerizable compounds, photopolymerization initiators, additional solvents and additives.
7. The self-luminous photosensitive resin composition according to claim 6, wherein the content of the quantum dot dispersion is 3 to 80% by weight based on 100% by weight of the whole self-luminous photosensitive resin composition.
8. A color filter comprising a cured product of the self-luminous photosensitive resin composition according to claim 6.
9. An image display device comprising the color filter of claim 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160151955A KR102028969B1 (en) | 2016-11-15 | 2016-11-15 | Quantum dot dispersion, self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same |
| KR10-2016-0151955 | 2016-11-15 | ||
| PCT/KR2017/010278 WO2018093034A1 (en) | 2016-11-15 | 2017-09-20 | Quantum dot dispersion liquid, self-luminescent photosensitive resin composition, color filter prepared by using same and image display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109952360A CN109952360A (en) | 2019-06-28 |
| CN109952360B true CN109952360B (en) | 2022-03-22 |
Family
ID=62146592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780070674.0A Active CN109952360B (en) | 2016-11-15 | 2017-09-20 | Quantum dot dispersion, self-luminous photosensitive resin composition, color filter manufactured using the same, and image display device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6778818B2 (en) |
| KR (1) | KR102028969B1 (en) |
| CN (1) | CN109952360B (en) |
| TW (1) | TWI683886B (en) |
| WO (1) | WO2018093034A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102554285B1 (en) * | 2017-02-03 | 2023-07-10 | 동우 화인켐 주식회사 | Quantum Dot Dispersion, Self Emission Type Photosensitive Resin Composition, Color Filter and Display Device |
| JP7011055B2 (en) | 2017-10-27 | 2022-01-26 | サムスン エスディアイ カンパニー，リミテッド | Quantum dot-containing composition, quantum dot manufacturing method and color filter |
| KR102190808B1 (en) | 2018-08-13 | 2020-12-14 | (주)이노큐디 | Quantum dot dispersion |
| JP7230382B2 (en) * | 2018-09-12 | 2023-03-01 | 東洋インキＳｃホールディングス株式会社 | Ink composition and printed matter |
| KR102519941B1 (en) * | 2018-10-18 | 2023-04-07 | 동우 화인켐 주식회사 | Light Conversion Resin Composition, Light Conversion Sheet and Display Device |
| JP6838691B2 (en) * | 2018-12-26 | 2021-03-03 | Dic株式会社 | Ink composition, light conversion layer, and color filter |
| KR102296792B1 (en) | 2019-02-01 | 2021-08-31 | 삼성에스디아이 주식회사 | Non-solvent type curable composition, curing layer using the same, color filter including the curing layer, display device and manufacturing method of the curing layer |
| KR102360987B1 (en) | 2019-04-24 | 2022-02-08 | 삼성에스디아이 주식회사 | Curable composition including quantum dot, resin layer using the same and display device |
| KR102504790B1 (en) | 2019-07-26 | 2023-02-27 | 삼성에스디아이 주식회사 | Quantum dot, curable composition comprising the same, curing layer using the composition, color filter including the curing layer, display device |
| KR102671678B1 (en) | 2019-09-10 | 2024-06-03 | 동우 화인켐 주식회사 | Light Conversion Ink Composition, Color Filter and Display Device |
| KR20210030787A (en) | 2019-09-10 | 2021-03-18 | 동우 화인켐 주식회사 | Light Conversion Ink Composition, Color Filter and Display Device |
| KR20220077958A (en) * | 2020-12-02 | 2022-06-10 | 삼성디스플레이 주식회사 | Ink composition, and methods of producing light emitting diode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511226A (en) * | 2014-10-14 | 2016-04-20 | 东友精细化工有限公司 | Photosensitive resin composition |
| CN107885033A (en) * | 2016-09-29 | 2018-04-06 | 东友精细化工有限公司 | Quantum dot dispersion and its manufacture method, colour filter and image display device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100678285B1 (en) | 2005-01-20 | 2007-02-02 | 삼성전자주식회사 | Quantum Dot Phosphor for Light Emitting Diode and Method of Preparing Thereof |
| US7393618B2 (en) * | 2006-09-15 | 2008-07-01 | Idemitsu Kosan Co., Ltd. | Composition for color converting member and production method of color conversion substrate using the same |
| JP2010009995A (en) * | 2008-06-27 | 2010-01-14 | Seiko Epson Corp | Discharge liquid, discharge liquid set, thin film pattern forming method, thin film, light emitting element, image display device, and electronic equipment |
| KR101740429B1 (en) * | 2010-09-15 | 2017-05-26 | 삼성전자주식회사 | Quantum dot comprising resonant surface ligands, and organoelectroluminescent device and solar cell employing the same |
| KR101463602B1 (en) | 2012-07-03 | 2014-11-20 | 주식회사 엘엠에스 | Encapsulated quantum dot and device using the same |
| US10734587B2 (en) * | 2014-03-13 | 2020-08-04 | Merck Patent Gmbh | Formulations of luminescent compounds |
| KR102092165B1 (en) * | 2014-09-23 | 2020-03-23 | 동우 화인켐 주식회사 | Photosensitive resin composition |
-
2016
- 2016-11-15 KR KR1020160151955A patent/KR102028969B1/en active IP Right Grant
-
2017
- 2017-09-20 WO PCT/KR2017/010278 patent/WO2018093034A1/en active Application Filing
- 2017-09-20 JP JP2019525834A patent/JP6778818B2/en active Active
- 2017-09-20 CN CN201780070674.0A patent/CN109952360B/en active Active
- 2017-11-09 TW TW106138840A patent/TWI683886B/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511226A (en) * | 2014-10-14 | 2016-04-20 | 东友精细化工有限公司 | Photosensitive resin composition |
| CN107885033A (en) * | 2016-09-29 | 2018-04-06 | 东友精细化工有限公司 | Quantum dot dispersion and its manufacture method, colour filter and image display device |
Non-Patent Citations (2)
| Title |
|---|
| Influence of the solvent environments on the spectral features of CdSe quantum dots with and without ZnS shell;K.H. Ibnaouf et al.;《Journal of Luminescence》;20140125;第149卷;第369-373页 * |
| K.H. Ibnaouf et al..Influence of the solvent environments on the spectral features of CdSe quantum dots with and without ZnS shell.《Journal of Luminescence》.2014,第149卷第369-373页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI683886B (en) | 2020-02-01 |
| KR102028969B1 (en) | 2019-10-07 |
| TW201825648A (en) | 2018-07-16 |
| JP6778818B2 (en) | 2020-11-04 |
| CN109952360A (en) | 2019-06-28 |
| WO2018093034A1 (en) | 2018-05-24 |
| KR20180054249A (en) | 2018-05-24 |
| JP2020512570A (en) | 2020-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109952360B (en) | Quantum dot dispersion, self-luminous photosensitive resin composition, color filter manufactured using the same, and image display device | |
| CN105511226B (en) | Photosensitive resin composition | |
| CN105652594B (en) | Self-luminous photosensitive resin composition, color filter and image display device | |
| KR102092165B1 (en) | Photosensitive resin composition | |
| CN107885033B (en) | Quantum dot dispersion, method of manufacturing the same, color filter, and image display device | |
| CN109863222B (en) | Quantum dot dispersion, self-luminous photosensitive resin composition containing same, color filter manufactured by using same, and image display device | |
| CN110300791B (en) | Quantum dot dispersion, self-luminous photosensitive resin composition, color filter, and image display device | |
| CN110023838B (en) | Self-luminous photosensitive resin composition, color filter and image display device manufactured by using same | |
| CN106569389B (en) | Self-luminous photosensitive resin composition, color filter and display device including the same | |
| KR20160103792A (en) | Self emission type photosensitive resin composition, color filter manufactured using thereof and image display device having the same | |
| CN107880871B (en) | Quantum dot dispersion, self-luminous photosensitive resin composition and use thereof | |
| CN109964175B (en) | Photosensitive resin composition, color filter and image display device | |
| KR102521519B1 (en) | Self emission type photosensitive resin composition, color filter and image display device produced using the same | |
| KR20180048488A (en) | A self-light emitting photosensitive resin composition, color filter and display device comprising the same | |
| TW202336208A (en) | Quantum dot, quantum dot dispersion, light converting curable composition, and cured film and display device manufactured by the composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |