WO2022239991A1 - 잉크 조성물, 이를 이용한 막, 이를 포함하는 전기영동 장치 및 디스플레이 장치 - Google Patents
잉크 조성물, 이를 이용한 막, 이를 포함하는 전기영동 장치 및 디스플레이 장치 Download PDFInfo
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- WO2022239991A1 WO2022239991A1 PCT/KR2022/005684 KR2022005684W WO2022239991A1 WO 2022239991 A1 WO2022239991 A1 WO 2022239991A1 KR 2022005684 W KR2022005684 W KR 2022005684W WO 2022239991 A1 WO2022239991 A1 WO 2022239991A1
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- C08K2003/282—Binary compounds of nitrogen with aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Definitions
- the present disclosure relates to an ink composition, a film using the same, an electrophoresis device and a display device including the same.
- LED is a semiconductor having a structure in which n-type semiconductor crystals in which many carriers are electrons and p-type semiconductor crystals in which many carriers are holes are bonded to each other by using the characteristics of compound semiconductors. It is a semiconductor device that is converted into light and displayed.
- LED semiconductors have very low energy consumption due to their high light conversion efficiency, and are semi-permanent and environmentally friendly, so they are called the revolution of light as a green material.
- compound semiconductor technology high-brightness red, orange, green, blue, and white LEDs have been developed, and these are used in many fields such as traffic lights, mobile phones, automobile headlights, outdoor signboards, LCD BLU (back light unit), and indoor and outdoor lighting. It has been applied in and active research is continuing at home and abroad.
- GaN-based compound semiconductors with a wide bandgap are materials used in the manufacture of LED semiconductors that emit light in the green, blue, and ultraviolet regions, and since white LED devices can be manufactured using blue LED devices, many studies have been conducted on this. is being done
- One embodiment is to provide an ink composition excellent in dielectrophoretic properties and storage stability of semiconductor nanorods.
- Another embodiment is to provide a film prepared using the ink composition.
- Another embodiment is to provide an electrophoretic device and a display device including the membrane.
- One embodiment is (A) a semiconductor nanorod; and (B) a mixed solvent including a first solvent containing a compound represented by Formula 1 and a second solvent containing a compound represented by Formula 2 below.
- R 1 to R 3 are each independently a hydrogen atom or a C1 to C10 alkyl group
- L 1 and L 2 are each independently a substituted or unsubstituted C1 to C20 alkylene group or a substituted or unsubstituted C6 to C20 arylene group;
- L 3 is *-O-*, *-S-* or *-NH-*;
- R 6 and R 7 are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C20 aryl group;
- Formula 2 may be represented by Formula 2A below.
- R 6 and R 7 are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C20 aryl group;
- R 8 and R 9 may each independently be a hydrogen atom.
- R 6 and R 7 may each independently be a hydrogen atom.
- the compound represented by Chemical Formula 2 may include a compound represented by any one of Chemical Formulas 2-1 to 2-4 below.
- the compound represented by Formula 2A may include a compound represented by any one of Formulas 2A-1 to 2A-4 below.
- the first solvent and the second solvent may be mixed in a weight ratio of 1:1 to 3:1.
- the mixed solvent when the mixed solvent is composed of the first solvent and the second solvent, the first solvent and the second solvent may be mixed in a weight ratio of 1:1 to 3:1.
- the mixed solvent may further include a third solvent including a compound represented by Formula 3 below.
- R 11 to R 13 are each independently a substituted or unsubstituted C1 to C20 alkoxy group.
- R 11 to R 13 may each independently be a C1 to C20 alkoxy group unsubstituted or substituted with a C2 to C10 alkenyl group.
- the first solvent may be included in 100 parts by weight to 1600 parts by weight based on 100 parts by weight of the second solvent
- the third solvent may be included in 50 parts by weight to 900 parts by weight based on 100 parts by weight of the second solvent.
- the mixed solvent is composed of the first solvent, the second solvent, and the third solvent, wherein the sum of the contents of the first solvent and the second solvent is greater than the contents of the third solvent, and the first solvent and the third solvent The sum of the contents of the three solvents may be greater than the amount of the second solvent.
- the mixed solvent includes the first solvent, the second solvent, and the third solvent, and in this case, the sum of the contents of the second solvent and the third solvent may be greater than the contents of the first solvent.
- the mixed solvent includes the first solvent, the second solvent, and the third solvent, and in this case, the sum of the contents of the second solvent and the third solvent may be less than the contents of the first solvent.
- the semiconductor nanorod may have a diameter of 300 nm to 900 nm.
- the semiconductor nanorod may have a length of 3.5 ⁇ m to 5 ⁇ m.
- the semiconductor nanorod may include a GaN-based compound, an InGaN-based compound, or a combination thereof.
- the surface of the semiconductor nanorod may be coated with a metal oxide.
- the metal oxide may include alumina, silica, or a combination thereof.
- the semiconductor nanorods may be included in an amount of 0.01 wt% to 10 wt% based on the total amount of the ink composition.
- the ink composition may include malonic acid; 3-amino-1,2-propanediol; silane-based coupling agents; leveling agent; fluorine-based surfactants; or a combination thereof.
- the ink composition may be an ink composition for an electrophoresis device.
- Another embodiment provides a film prepared using the ink composition.
- Another embodiment provides an electrophoresis device including the membrane.
- Another embodiment provides a display device including the film.
- An ink composition including semiconductor nanorods may provide a curable composition having excellent dielectrophoretic properties and storage stability.
- FIG. 1 is an example of a cross-sectional view of a semiconductor nanorod used in a curable composition according to an embodiment.
- alkyl group means a C1 to C20 alkyl group
- alkenyl group means a C2 to C20 alkenyl group
- cycloalkenyl group means a C3 to C20 cycloalkenyl group
- Heterocycloalkenyl group means a C3 to C20 heterocycloalkenyl group
- aryl group means a C6 to C20 aryl group
- arylalkyl group means a C6 to C20 arylalkyl group
- alkylene group means a C1 to C20 alkylene group
- arylene group means a C6 to C20 arylene group
- alkylarylene group means a C6 to C20 alkylarylene group
- heteroarylene group means a C3 to C20 hetero It means an arylene group
- alkoxyylene group means a C1 to C20 alkoxyylene
- substitution means that at least one hydrogen atom is a halogen atom (F, Cl, Br, I), a hydroxy group, a C1 to C20 alkoxy group, a nitro group, a cyano group, an amine group, an imino group, Azido group, amidino group, hydrazino group, hydrazono group, carbonyl group, carbamyl group, thiol group, ester group, ether group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid or its salt, C1 to C20 alkyl group, C2 to C20 alkenyl group, C2 to C20 alkynyl group, C6 to C20 aryl group, C3 to C20 cycloalkyl group, C3 to C20 cycloalkenyl group, C3 to C20 cycloalkynyl group, C2 to C20 heterocycloalkyl group, C2
- hetero means that at least one heteroatom of N, O, S, and P is included in the chemical formula.
- (meth)acrylate means that both “acrylate” and “methacrylate” are possible
- (meth)acrylic refers to “acrylic” and “methacrylic”. “That means both are possible.
- a semiconductor nanorod refers to a rod-shaped semiconductor having a nano-sized diameter.
- An ink composition according to an embodiment includes (A) semiconductor nanorods; and (B) a mixed solvent including a first solvent containing a compound represented by Formula 1 and a second solvent containing a compound represented by Formula 2 below.
- R 1 to R 3 are each independently a hydrogen atom or a C1 to C10 alkyl group
- L 1 and L 2 are each independently a substituted or unsubstituted C1 to C20 alkylene group or a substituted or unsubstituted C6 to C20 arylene group;
- L 3 is *-O-*, *-S-* or *-NH-*;
- R 6 and R 7 are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C20 aryl group;
- organic solvents used in existing displays and electronic materials have low viscosity, so that high-density inorganic nanorod particles settle too quickly, which can cause inorganic nanorod particles to agglomerate and volatilize. Alignment properties may deteriorate when the solvent is dried after dielectrophoresis because it is so fast. Therefore, in order to develop an ink composition including inorganic nanorods (semiconductor nanorods), a solvent with high viscosity and low dielectric constant and low electrical conductivity is required to improve the sedimentation stability of the nanorods, and has good dielectrophoretic properties.
- the inventors of the present invention found that the dielectrophoretic properties of the semiconductor nanorods in the ink composition were maintained while maintaining excellent ink jetting properties by using a mixture of compounds of a specific structure as solvents used together with the semiconductor nanorods. was greatly improved, and storage stability was also excellently implemented.
- the semiconductor nanorod may include a GaN-based compound, an InGaN-based compound, or a combination thereof, and may have a surface coated with a metal oxide.
- the inventors of the present invention after numerous trials and errors of research, coated the surface of the semiconductor nanorods with a metal oxide containing alumina, silica, or a combination thereof to form an insulating film (Al 2 O 3 or SiO x ), thereby forming a contact with a solvent described later. compatibility could be maximized.
- the insulating layer coated with the metal oxide may have a thickness of 40 nm to 60 nm.
- the semiconductor nanorod includes an n-type confinement layer and a p-type confinement layer, and a multiquantum well active part between the n-type confinement layer and the p-type confinement layer ( MQW active region; multi quantum well active region) may be located.
- MQW active region multi quantum well active region
- the semiconductor nanorod may have a diameter of 300 nm to 900 nm, for example, 600 nm to 700 nm.
- the semiconductor nanorods may have a length of 3.5 ⁇ m to 5 ⁇ m.
- the semiconductor nanorod when it includes an alumina insulating film, it may have a density of 5 g/cm 3 to 6 g/cm 3 .
- the semiconductor nanorod may have a mass of 1 x 10 -13 g to 1 x 10 -11 g.
- the semiconductor nanorods have the above diameter, length, density, and type, surface coating of the metal oxide may be facilitated, and dispersion stability of the semiconductor nanorods may be maximized.
- the semiconductor nanorods may be included in an amount of 0.01 wt % to 10 wt %, for example, 0.01 wt % to 5 wt %, based on the total amount of the ink composition.
- the semiconductor nanorods may be included in an amount of 0.01 part by weight to 0.5 part by weight, for example, 0.01 part by weight to 0.1 part by weight, based on 100 parts by weight of the solvent in the ink composition.
- dispersibility in the ink is good, and the manufactured pattern may have excellent luminance.
- An ink composition according to an embodiment includes a mixed solvent including a first solvent containing the compound represented by Formula 1 and a second solvent containing the compound represented by Formula 2.
- the inventors of the present invention were able to solve the above problems by including the compound represented by Formula 2 in the mixed solvent and greatly improving the compatibility with the citrate-based solvent and the triazine-based solvent, and improved low-temperature storage stability as well as dielectrophoresis It was also confirmed that the characteristics could be improved.
- Chemical Formula 2 may be represented by Chemical Formula 2A below.
- R 6 and R 7 are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C6 to C20 aryl group;
- R 8 and R 9 may each independently represent a hydrogen atom.
- compatibility of the second solvent with the first solvent and the third solvent to be described later may be further improved.
- R 6 and R 7 may each independently represent a hydrogen atom.
- compatibility of the second solvent with the first solvent and the third solvent to be described later may be further improved.
- R 6 to R 9 may each independently be a hydrogen atom.
- the compatibility of the second solvent with respect to the first solvent and the third solvent described below may be maximized.
- the compound represented by Chemical Formula 2 may include a compound represented by any one of Chemical Formulas 2-1 to 2-4, but is not necessarily limited thereto.
- the compound represented by Chemical Formula 2A may include a compound represented by any one of Chemical Formulas 2A-1 to 2A-4, but is not necessarily limited thereto.
- the first solvent and the second solvent may be mixed in a weight ratio of 1:1 to 3:1.
- the first solvent and the second solvent may be mixed in a weight ratio of 1:1 to 3:1.
- the mixing weight ratio between the first solvent and the second solvent is controlled within the above range, the compatibility between the first solvent and the second solvent can be further improved.
- the mixed solvent may further include a third solvent including a compound represented by Formula 3 below.
- R 11 to R 13 are each independently a substituted or unsubstituted C1 to C20 alkoxy group.
- R 11 to R 13 may each independently be a C1 to C20 alkoxy group unsubstituted or substituted with a C2 to C10 alkenyl group (eg, a vinyl group).
- the mixed solvent in the ink composition according to the embodiment further includes the third solvent in addition to the first solvent and the second solvent, compatibility between solvents having different structures is further improved, and storage stability at low temperatures is improved. this can be maximized.
- the compound represented by Chemical Formula 3 may include at least one selected from the group consisting of compounds represented by Chemical Formulas 3-1 and 3-2, but is not necessarily limited thereto.
- the mixed solvent is composed of the first solvent, the second solvent, and the third solvent
- the first solvent is included in 100 parts by weight to 1600 parts by weight based on 100 parts by weight of the second solvent
- the third solvent may be included in 50 parts by weight to 900 parts by weight based on 100 parts by weight of the second solvent.
- the mixed solvent is composed of the first solvent, the second solvent, and the third solvent
- the sum of the contents of the first solvent and the second solvent is greater than the contents of the third solvent
- the first solvent and The sum of the amounts of the third solvent may be greater than the amount of the second solvent.
- the mixed solvent is composed of the first solvent, the second solvent, and the third solvent
- the sum of the contents of the second solvent and the third solvent may be greater than the contents of the first solvent
- the mixed solvent includes the first solvent, the second solvent, and the third solvent
- the sum of the contents of the second solvent and the third solvent may be less than the contents of the first solvent
- the mixed solvent may further include a compound represented by Formula 4 below.
- R 14 to R 16 are each independently a substituted or unsubstituted C1 to C20 alkyl group.
- R 3 to R 5 may each independently be a C1 to C20 alkyl group unsubstituted or substituted with a C2 to C10 alkenyl group (eg, a vinyl group).
- the compound represented by Chemical Formula 4 may include at least one selected from the group consisting of compounds represented by Chemical Formulas 4-1 and 4-2, but is not necessarily limited thereto.
- the compound represented by Chemical Formula 1 may be represented by any one of Chemical Formulas 1-1 to 1-6, but is not necessarily limited thereto.
- the solvent may be included in an amount of 20 wt% to 99.99 wt%, for example, 20 wt% to 99.7 wt%, for example, 20 wt% to 95 wt%, for example, 30 wt% to 90 wt%, based on the total amount of the ink composition.
- the ink composition according to one embodiment may further include a polymerizable compound, if necessary.
- the polymerizable compound may be used by mixing monomers or oligomers commonly used in conventional curable compositions.
- the polymerizable compound may be a polymerizable monomer having a carbon-carbon double bond at its terminal.
- the polymerizable compound may be a polymerizable monomer having at least one functional group represented by Formula A-1 below or a functional group represented by Formula A-2 below at its terminal.
- L a is a substituted or unsubstituted C1 to C20 alkylene group
- R a is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group.
- the polymerizable compound includes at least one carbon-carbon double bond at the terminal, specifically, a functional group represented by Formula A-1 or a functional group represented by Formula A-2, thereby forming a cross-linked structure with the surface-modifying compound.
- One cross-linked body thus formed can further enhance the dispersion stability of the semiconductor nanorods by further doubling a kind of steric hindrance effect.
- examples of the polymerizable compound containing at least one functional group represented by Formula A-1 at the terminal include divinyl benzene, triallyl cyanurate, triallyl isocyanurate, triallyl trimellitate, triallyl phosphate, triallyl phosphite, triallyl triazine, diallyl phthalate, or combinations thereof, and the like, but are not necessarily limited thereto.
- ethylene glycol diacrylate triethylene glycol diacrylate, 1,4-butanediol diacrylate, 1,6-hexane Diol diacrylate, neopentyl glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, Pentaerythritol hexaacrylate, bisphenol A diacrylate, trimethylolpropane triacrylate, novolac epoxy acrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene Glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexane Diol diacrylate, neopentyl glycol diacrylate, pentaery
- the polymerizable compound may be used after being treated with an acid anhydride to impart better developability.
- the curable composition according to one embodiment may further include a polymerization initiator, for example, a photopolymerization initiator, a thermal polymerization initiator, or a combination thereof, if necessary.
- a polymerization initiator for example, a photopolymerization initiator, a thermal polymerization initiator, or a combination thereof, if necessary.
- the photopolymerization initiator is an initiator generally used in a curable curable composition, for example, an acetophenone-based compound, a benzophenone-based compound, a thioxanthone-based compound, a benzoin-based compound, a triazine-based compound, an oxime-based compound, an amino ketone-based compound etc. can be used, but is not necessarily limited thereto.
- acetophenone-based compound examples include 2,2'-diethoxy acetophenone, 2,2'-dibutoxy acetophenone, 2-hydroxy-2-methylpropiophenone, p-t-butyltrichloro acetophenone, p-t-butyldichloroacetophenone, 4-chloroacetophenone, 2,2'-dichloro-4-phenoxyacetophenone, 2-methyl-1-(4-(methylthio)phenyl)-2-morpholinopropane- 1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butan-1-one, etc. are mentioned.
- benzophenone-based compound examples include benzophenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4-phenyl benzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4'-bis(dimethylamino)benzophenone, 4,4 '-bis(diethylamino)benzophenone, 4,4'-dimethylaminobenzophenone, 4,4'-dichlorobenzophenone, 3,3'-dimethyl-2-methoxybenzophenone, and the like.
- thioxanthone-based compound examples include thioxanthone, 2-methylthioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, 2,4-diisopropyl thioxanthone, 2- Chlorothioxanthone etc. are mentioned.
- benzoin-based compound examples include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, and benzyldimethylketal.
- triazine-based compound examples include 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis(trichloromethyl)-s-triazine, 2-(3',4' -Dimethoxystyryl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4'-methoxynaphthyl)-4,6-bis(trichloromethyl)-s-triazine , 2-(p-methoxyphenyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(p-tolyl)-4,6-bis(trichloromethyl)-s-triazine , 2-biphenyl-4,6-bis(trichloromethyl)-s-triazine, bis(trichloromethyl)-6-styryl-s-triazine, 2-(naphtho-1-yl)- 4,6-bis(trichlor
- Examples of the oxime-based compound include O-acyloxime-based compounds, 2-(O-benzoyloxime)-1-[4-(phenylthio)phenyl]-1,2-octanedione, 1-(O-acetyloxime) -1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]ethanone, O-ethoxycarbonyl- ⁇ -oxyamino-1-phenylpropan-1-one, etc. can be used.
- O-acyloxime compound examples include 1,2-octanedione, 2-dimethylamino-2-(4-methylbenzyl)-1-(4-morpholin-4-yl-phenyl)-butane- 1-one, 1-(4-phenylsulfanylphenyl)-butane-1,2-dione-2-oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octane-1,2-dione -2-oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octan-1-one oxime-O-acetate and 1-(4-phenylsulfanylphenyl)-butan-1-one oxime- O-acetate etc. are mentioned.
- amino ketone compound is 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 (2-Benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone -1), etc.
- a carbazole-based compound As the photopolymerization initiator, a carbazole-based compound, a diketone compound, a sulfonium borate-based compound, a diazo-based compound, an imidazole-based compound, or a biimidazole-based compound may be used in addition to the above compound.
- the photopolymerization initiator may be used together with a photosensitizer that causes a chemical reaction by absorbing light, becoming excited, and then transferring the energy thereto.
- photosensitizer examples include tetraethylene glycol bis-3-mercapto propionate, pentaerythritol tetrakis-3-mercapto propionate, dipentaerythritol tetrakis-3-mercapto propionate, and the like. can be heard
- thermal polymerization initiator examples include peroxides, specifically benzoyl peroxide, dibenzoyl peroxide, lauryl peroxide, dilauryl peroxide, di-tert-butyl peroxide, cyclohexane peroxide, and methyl ethyl ketone peroxide. oxides, hydroperoxides (eg tert-butyl hydroperoxide, cumene hydroperoxide), dicyclohexyl peroxydicarbonate, 2,2-azo-bis(isobutyronitrile), t-butyl perbenzo ate, etc., and 2,2'-azobis-2-methylpropionitrile, etc. may be mentioned, but it is not necessarily limited thereto, and any one widely known in the art may be used.
- peroxides specifically benzoyl peroxide, dibenzoyl peroxide, lauryl peroxide, dilauryl peroxide, di-tert-butyl peroxide,
- the polymerization initiator may be included in an amount of 1 wt% to 5 wt%, for example, 2 wt% to 4 wt%, based on the total amount of solids constituting the ink composition.
- excellent reliability may be obtained due to sufficient curing during exposure or thermal curing.
- the curable composition according to one embodiment may further include a polymerization inhibitor including a hydroquinone-based compound, a catechol-based compound, or a combination thereof, as the case may be.
- a polymerization inhibitor including a hydroquinone-based compound, a catechol-based compound, or a combination thereof, as the case may be.
- the ink composition according to an embodiment further includes the hydroquinone-based compound, the catechol-based compound, or a combination thereof, crosslinking at room temperature may be prevented during exposure after printing (coating) the ink composition.
- the hydroquinone-based compound, the catechol-based compound, or a combination thereof is hydroquinone, methyl hydroquinone, methoxyhydroquinone, t-butyl hydroquinone, 2,5-di- t -butyl hydroquinone, 2,5- Bis(1,1-dimethylbutyl) hydroquinone, 2,5-bis(1,1,3,3-tetramethylbutyl) hydroquinone, catechol, t-butyl catechol, 4-methoxyphenol, pyroga Lol, 2,6-di- t -butyl-4-methylphenol, 2-naphthol, tris(N-hydroxy-N-nitrosophenylaminato-O,O') aluminum (Tris(N-hydroxy-N -nitrosophenylaminato-O, O')aluminium) or a combination thereof, but is not necessarily limited thereto.
- the hydroquinone-based compound, the catechol-based compound, or a combination thereof may be used in the form of a dispersion, and the polymerization inhibitor in the form of the dispersion is present in an amount of 0.001% to 1% by weight, for example, 0.01% to 0.1% by weight, based on the total amount of the ink composition.
- the stabilizer is included within the above range, it is possible to solve the aging problem at room temperature and to prevent sensitivity deterioration and surface peeling.
- the ink composition according to an embodiment may include malonic acid in addition to the polymerization inhibitor; 3-amino-1,2-propanediol; silane-based coupling agents; leveling agent; fluorine-based surfactants; or a combination thereof may be further included.
- the ink composition may further include a silane-based coupling agent having a reactive substituent such as a vinyl group, a carboxyl group, a methacryloxy group, an isocyanate group, or an epoxy group in order to improve adhesion to a substrate.
- a silane-based coupling agent having a reactive substituent such as a vinyl group, a carboxyl group, a methacryloxy group, an isocyanate group, or an epoxy group in order to improve adhesion to a substrate.
- silane-based coupling agent examples include trimethoxysilyl benzoic acid, ⁇ -methacryloxypropyl trimethoxysilane, vinyl triacetoxysilane, vinyl trimethoxysilane, ⁇ -isocyanate propyl triethoxysilane, ⁇ -glyc sidoxy propyl trimethoxysilane, ⁇ -epoxycyclohexyl)ethyltrimethoxysilane, and the like, and these may be used alone or in combination of two or more.
- the silane-based coupling agent may be included in an amount of 0.01 part by weight to 10 parts by weight based on 100 parts by weight of the ink composition. When the silane-based coupling agent is included within the above range, adhesion, storability, and the like are excellent.
- the ink composition may further include a surfactant, such as a fluorine-based surfactant, to improve coating properties and prevent defect formation, if necessary.
- a surfactant such as a fluorine-based surfactant
- the fluorine-based surfactant may be used in an amount of 0.001 part by weight to 5 parts by weight based on 100 parts by weight of the ink composition.
- the fluorine-based surfactant is included within the above range, coating uniformity is secured, stains do not occur, and wettability to a glass substrate is excellent.
- antioxidants and stabilizers may be further added to the ink composition within a range that does not impair physical properties.
- the ink composition may further include a binder resin.
- the binder resin may include an acrylic binder resin, a cardo-based binder resin, or a combination thereof.
- acrylic binder resin and the cardo-based resin any known resin commonly used in curable compositions or photosensitive compositions may be used, and the binder resin is not limited to a specific type.
- the binder resin may be included in an amount of 1 wt % to 30 wt %, for example, 1 wt % to 20 wt %, based on the total amount of the ink composition. When the binder resin is included within the above range, curing shrinkage may be reduced.
- Another embodiment provides a film using an ink composition.
- Another embodiment may provide an electrophoresis device and/or a display device including the membrane.
- 40 ml of stearic acid (1.5 mM) is reacted at room temperature for 24 hours on a nano rod patterned GaN wafer (4 inch). After the reaction, soak in 50ml of acetone for 5 minutes to remove excess stearic acid, and additionally rinse the wafer surface with 40ml of acetone. Put the cleaned wafer into a 27kW bath type sonicator with 35ml of GBL, and use sonication for 5 minutes to separate the rod from the wafer surface. Put the separated rod into a FALCON tube dedicated to the centrifuge and add 10ml of GBL to additionally wash the rod on the surface of the bath.
- Solvent composition (wt%) Formula 1-2 Formula 2A-1 Formula 2A-2 Formula 2A-3 Formula 2A-4 Formula 4-1 2,4-diethyl-1,5-pentanediol
- Example 1 63 37 - - - - - Example 2 52 - 48 - - - - Example 3 57 - - 43 - - - Example 4 63 - - - 4 33 - Example 5 36 - 21 - - 43 - Example 6 44 - - 31 - 25 - Example 7 44 - - 34 - 22 - Example 8 44 - - 37 - 19 - Comparative Example 1 56 - - - - - 44 Comparative Example 2 32.5 - - - - 31 36.5
- the method for measuring dielectrophoretic properties is as follows.
- Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 Viscosity (cps) 67.5 66.9 67.0 66.1 66.7 67.2 67.8 68.1 67.3 66.3 Bias Alignment (%) 59 66 67 89 99 99 98 95 61 96 Center Alignment (%) 79 81 82 83 86 88 89 88 72 74
- the dielectrophoretic properties are excellent compared to Comparative Example 1 including the two-component solvent.
- the dielectrophoretic properties are very excellent while maintaining high viscosity values at 25 ° C. compared to Comparative Example 2 including the 3-component solvent. . From this, it can be seen that the ink composition according to one embodiment greatly improves the dispersion stability of the semiconductor nanorods and has excellent dielectrophoretic properties, making it suitable for large-area coating and panel production.
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Abstract
Description
함량 | |
(A) GaN 나노로드 | 0.2 |
(B) 혼합용매 | 99.8 |
용매 조성 (wt%) | |||||||
화학식 1-2 | 화학식 2A-1 | 화학식 2A-2 | 화학식 2A-3 | 화학식 2A-4 | 화학식 4-1 | 2,4-diethyl-1,5-pentanediol | |
실시예 1 | 63 | 37 | - | - | - | - | - |
실시예 2 | 52 | - | 48 | - | - | - | - |
실시예 3 | 57 | - | - | 43 | - | - | - |
실시예 4 | 63 | - | - | - | 4 | 33 | - |
실시예 5 | 36 | - | 21 | - | - | 43 | - |
실시예 6 | 44 | - | - | 31 | - | 25 | - |
실시예 7 | 44 | - | - | 34 | - | 22 | - |
실시예 8 | 44 | - | - | 37 | - | 19 | - |
비교예 1 | 56 | - | - | - | - | - | 44 |
비교예 2 | 32.5 | - | - | - | - | 31 | 36.5 |
보관 온도(℃) | 20 | 18 | 16 | 12 | 0 | |
실시예 1 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 2 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 3 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 4 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 5 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 6 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 7 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
실시예 8 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | ○ | |
비교예 1 | 성상 변화 | ○ | ○ | ○ | ○ | ○ |
조성비 변화 | ○ | ○ | ○ | ○ | X | |
비교예 2 | 성상 변화 | ○ | ○ | X | X | X |
조성비 변화 | ○ | ○ | ○ | X | X |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 | 실시예 8 | 비교예 1 | 비교예 2 | |
점도(cps) | 67.5 | 66.9 | 67.0 | 66.1 | 66.7 | 67.2 | 67.8 | 68.1 | 67.3 | 66.3 |
편향 정렬도(%) | 59 | 66 | 67 | 89 | 99 | 99 | 98 | 95 | 61 | 96 |
중앙 정렬도(%) | 79 | 81 | 82 | 83 | 86 | 88 | 89 | 88 | 72 | 74 |
Claims (21)
- (A) 반도체 나노로드; 및(B) 하기 화학식 1로 표시되는 화합물을 포함하는 제1 용매 및 하기 화학식 2로 표시되는 화합물을 포함하는 제2 용매를 포함하는 혼합 용매를 포함하는 잉크 조성물:[화학식 1]상기 화학식 1에서,R1 내지 R3은 각각 독립적으로 수소 원자 또는 C1 내지 C10 알킬기이고,R4는 수소 원자 또는 *-C(=O)R5 (R5는 C1 내지 C10 알킬기임)이고,L1 및 L2는 각각 독립적으로 치환 또는 비치환된 C1 내지 C20 알킬렌기 또는 치환 또는 비치환된 C6 내지 C20 아릴렌기이고,L3은 *-O-*, *-S-* 또는 *-NH-* 이고,[화학식 2]상기 화학식 2에서,R6 및 R7은 각각 독립적으로 수소 원자, 치환 또는 비치환된 C1 내지 C20 알킬기, 치환 또는 비치환된 C3 내지 C20 사이클로알킬기 또는 치환 또는 비치환된 C6 내지 C20 아릴기이고,R8 및 R9는 각각 독립적으로 수소 원자 또는 *-(C=O)R10(R10은 치환 또는 비치환된 C1 내지 C20 알킬기, 치환 또는 비치환된 C3 내지 C20 사이클로알킬기 또는 치환 또는 비치환된 C6 내지 C20 아릴기임)이다.
- 제1항에 있어서,상기 화학식 2는 하기 화학식 2A로 표시되는 잉크 조성물:[화학식 2A]상기 화학식 2A에서,R6 및 R7은 각각 독립적으로 수소 원자, 치환 또는 비치환된 C1 내지 C20 알킬기, 치환 또는 비치환된 C3 내지 C20 사이클로알킬기 또는 치환 또는 비치환된 C6 내지 C20 아릴기이고,R8 및 R9는 각각 독립적으로 수소 원자 또는 *-(C=O)R10(R10은 치환 또는 비치환된 C1 내지 C20 알킬기, 치환 또는 비치환된 C3 내지 C20 사이클로알킬기 또는 치환 또는 비치환된 C6 내지 C20 아릴기임)이다.
- 제1항에 있어서,상기 R8 및 R9는 각각 독립적으로 수소 원자인 잉크 조성물.
- 제1항에 있어서,상기 R6 및 R7은 각각 독립적으로 수소 원자인 잉크 조성물.
- 제1항에 있어서,상기 제1 용매 및 제2 용매는 1:1 내지 3:1의 중량비로 혼합되는 잉크 조성물.
- 제7항에 있어서,상기 화학식 3에서, R11 내지 R13은 각각 독립적으로 C2 내지 C10 알케닐기로 치환 또는 비치환된 C1 내지 C20 알콕시기인 잉크 조성물.
- 제7항에 있어서,상기 제1 용매는 상기 제2 용매 100 중량부 대비 100 중량부 내지 1600 중량부로 포함되고,상기 제3 용매는 상기 제2 용매 100 중량부 대비 50 중량부 내지 900 중량부로 포함되는 잉크 조성물.
- 제7항에 있어서,상기 혼합 용매는 상기 제1 용매, 제2 용매 및 제3 용매로 구성되고,상기 제1 용매 및 제2 용매의 함량의 합은 상기 제3 용매의 함량보다 많고,상기 제1 용매 및 제3 용매의 함량의 합은 상기 제2 용매의 함량보다 많은 잉크 조성물.
- 제1항에 있어서,상기 반도체 나노로드는 300nm 내지 900nm의 직경을 가지는 잉크 조성물.
- 제1항에 있어서,상기 반도체 나노로드는 3.5 ㎛ 내지 5 ㎛의 길이를 가지는 잉크 조성물.
- 제1항에 있어서,상기 반도체 나노로드는 GaN계 화합물, InGaN계 화합물 또는 이들의 조합을 포함하는 잉크 조성물.
- 제1항에 있어서,상기 반도체 나노로드는 그 표면이 금속 산화물로 코팅된 잉크 조성물.
- 제14항에 있어서,상기 금속 산화물은 알루미나, 실리카 또는 이들의 조합을 포함하는 잉크 조성물.
- 제1항에 있어서,상기 반도체 나노로드는 상기 잉크 조성물 총량에 대하여 0.01 중량% 내지 10 중량%로 포함되는 잉크 조성물.
- 제1항에 있어서,상기 잉크 조성물은 말론산; 3-아미노-1,2-프로판디올; 실란계 커플링제; 레벨링제; 불소계 계면활성제; 또는 이들의 조합을 더 포함하는 잉크 조성물.
- 제1항에 있어서,상기 잉크 조성물은 전기영동 장치용 잉크 조성물인 잉크 조성물.
- 제1항 내지 제18항 중 어느 한 항의 잉크 조성물을 이용하여 제조된 막.
- 제19항의 막을 포함하는 전기영동 장치.
- 제19항의 막을 포함하는 디스플레이 장치.
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KR20140143088A (ko) * | 2013-06-04 | 2014-12-15 | 제록스 코포레이션 | 상 변화 잉크용 비결정성 물질로서의 타르타르산 에스테르 및 시트르산 에스테르의 혼합물 |
KR20180021870A (ko) * | 2015-08-14 | 2018-03-05 | 광저우 차이나레이 옵토일렉트로닉 머티리얼즈 엘티디. | 인쇄용 잉크 조성물 및 전자소자 |
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CN110607094B (zh) * | 2018-06-14 | 2024-04-05 | 香港科技大学 | 油墨组合物、纳米棒增强膜、喷墨打印方法及液晶显示装置 |
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US20060145163A1 (en) * | 2002-09-17 | 2006-07-06 | Takatoshi Tsujimura | Organic elctroluminescent display and method for manufacturing organic electroluminescent display |
JP2007011342A (ja) * | 2005-06-30 | 2007-01-18 | Xerox Corp | イメージの安定性のためにゲル化剤を含有する表示媒体を含む電気泳動ディスプレイ |
KR20140143088A (ko) * | 2013-06-04 | 2014-12-15 | 제록스 코포레이션 | 상 변화 잉크용 비결정성 물질로서의 타르타르산 에스테르 및 시트르산 에스테르의 혼합물 |
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