WO2022239992A1 - 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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- WO2022239992A1 WO2022239992A1 PCT/KR2022/005686 KR2022005686W WO2022239992A1 WO 2022239992 A1 WO2022239992 A1 WO 2022239992A1 KR 2022005686 W KR2022005686 W KR 2022005686W WO 2022239992 A1 WO2022239992 A1 WO 2022239992A1
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- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/04—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction
- H01L33/06—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/20—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/26—Materials of the light emitting region
- H01L33/30—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table
- H01L33/32—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table containing nitrogen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/44—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
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 having excellent electrophoretic properties, inkjetting 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 comprising a first solvent, a second solvent, and a third solvent, wherein the first solvent includes a compound having a viscosity of 70 cps or less at 25° C. and a dielectric constant of 5 or more;
- the second solvent includes a compound having a viscosity of 80cps or more at 25° C. or a solid and a dielectric constant of 5 or more, and the third solvent includes a compound having a dielectric constant of less than 5.
- the first solvent may have a viscosity of 3cps or more at 50°C.
- the first solvent may include a compound represented by Formula 1-1 or Formula 1-2 below.
- R 2 to R 4 are each independently a substituted or unsubstituted C2 to C20 alkyl group
- R 5 is a C6 to C20 aryl group unsubstituted or substituted with a substituted or unsubstituted C1 to C20 alkyl group or a C2 to C10 alkoxy group;
- L 1 to L 3 are each independently a substituted or unsubstituted C1 to C20 alkylene group
- n is an integer from 1 to 20;
- the compound represented by Formula 1-1 may include a compound represented by Formula 1-1-1 or Formula 1-1-2 below.
- the compound represented by Formula 1-2 may include a compound represented by any one of Formulas 1-2-1 to Formula 1-2-4 below.
- the second solvent may have a viscosity of 10 cps or more at 50° C. or may be solid.
- the second solvent may include a compound represented by any one of Formulas 2-1 to 2-6 below.
- L 1 , L 2 and L 4 to L 8 are each independently a substituted or unsubstituted C1 to C20 alkylene group
- R 6 is a hydroxy group or a substituted or unsubstituted C1 to C20 alkyl group
- R 7 and R 8 are each independently a substituted or unsubstituted C1 to C20 alkyl group
- R 16 and R 17 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 20 is a methoxy group
- R 21 is a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C1 to C20 alkoxy group;
- n is an integer from 1 to 4.
- p is an integer from 0 to 4.
- q is an integer from 1 to 20;
- the compound represented by Chemical Formula 2-1 may include a compound represented by Chemical Formula 2-1-1 below.
- the compound represented by Chemical Formula 2-2 may include a compound represented by Chemical Formula 2-2-1 below.
- the compound represented by Chemical Formula 2-3 may include a compound represented by any one of Chemical Formulas 2-3-1 to 2-3-3 below.
- the compound represented by Chemical Formula 2-4 may include a compound represented by Chemical Formula 2-4-1 below.
- the compound represented by Chemical Formula 2-5 may include a compound represented by any one of Chemical Formulas 2-5-1 and 2-5-2 below.
- the compound represented by Chemical Formula 2-6 may include a compound represented by any one of Chemical Formulas 2-6-1 to 2-6-3 below.
- the third solvent may have a viscosity of 70cps or more at 25°C or a solid, and a viscosity of 3cps or more at 50°C.
- the third solvent may include a compound represented by any one of Formula 3-1 or Formula 3-2 below.
- R 9 to R 14 are each independently a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group.
- the compound represented by Chemical Formula 3-1 may include a compound represented by Chemical Formula 3-1-1 below.
- the compound represented by Chemical Formula 3-2 may include a compound represented by Chemical Formula 3-2-1 below.
- the first solvent may be included in an amount of 10 parts by weight to 50 parts by weight based on 100 parts by weight of the mixed solvent.
- the second solvent may be included in an amount of 10 parts by weight to 40 parts by weight based on 100 parts by weight of the mixed solvent.
- the third solvent may be included in an amount of 20 parts by weight to 50 parts by weight based on 100 parts by weight of the mixed 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 electrophoretic properties, inkjetting 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 includes (A) semiconductor nanorods; and (B) a mixed solvent comprising a first solvent, a second solvent, and a third solvent, wherein the first solvent includes a compound having a viscosity of 70 cps or less at 25° C. and a dielectric constant of 5 or more;
- the second solvent includes a compound having a viscosity of 80 cps or more at 25° C. or a solid and a dielectric constant of 5 or more, and the third solvent includes a compound having a dielectric constant of less than 5.
- 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 high boiling point having good dielectrophoretic properties is required to improve the sedimentation stability of the nanorods.
- the ink jetting properties of the ink composition are maintained excellently, and at the same time, the electrophoretic properties of the semiconductor nanorods in the ink composition, in particular, the normal alignment is greatly improved. and excellent storage stability.
- 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 three different solvents (a first solvent, a second solvent, and a third solvent) that satisfy different conditions, respectively.
- Organic solvents such as propylene glycol monomethyl ether acetate (PEGMEA), ⁇ -butyrolactone (GBL), polyethylene glycol methyl ether (PGME), ethyl acetate, and isopropyl alcohol (IPA) used in conventional displays and electronic materials have a low viscosity.
- PEGMEA propylene glycol monomethyl ether acetate
- GBL ⁇ -butyrolactone
- PGME polyethylene glycol methyl ether
- IPA isopropyl alcohol
- the ink composition according to one embodiment has a large viscosity difference between room temperature (25 ° C) and 50 ° C., so that the sedimentation of nanorods is slow at room temperature and has a viscosity of 15 cps or less at 50 ° C.
- the dielectric constant can be adjusted according to the mixing weight ratio between the three solvents. That is, the ink composition according to an embodiment exhibits storage stability (high viscosity at room temperature), inkjet processability (viscosity of 15 cps or less at 50 ° C), and high dielectrophoretic properties (low electrical conductivity and controllable dielectric constant). can do.
- the desired viscosity and dielectric constant can be easily adjusted with the three-component solvent component ratio (mixing weight ratio). It can be said that the ink composition according to the example is completely different in concept itself compared to the conventional ink composition.
- the first solvent may have a viscosity of 3cps or more at 50°C.
- the first solvent may include a compound represented by Formula 1-1 or Formula 1-2 below.
- R 2 to R 4 are each independently a substituted or unsubstituted C2 to C20 alkyl group
- R 5 is a C6 to C20 aryl group unsubstituted or substituted with a substituted or unsubstituted C1 to C20 alkyl group or a C2 to C10 alkoxy group;
- L 1 to L 3 are each independently a substituted or unsubstituted C1 to C20 alkylene group
- n is an integer from 1 to 20;
- the compound represented by Chemical Formula 1-1 may include a compound represented by Chemical Formula 1-1-1 or Chemical Formula 1-1-2 below.
- the compound represented by Chemical Formula 1-2 may include a compound represented by any one of Chemical Formulas 1-2-1 to 1-2-4 below.
- the second solvent may have a viscosity of 10 cps or more at 50° C. or may be solid.
- the second solvent may include a compound represented by any one of Formulas 2-1 to 2-6 below.
- L 1 , L 2 and L 4 to L 8 are each independently a substituted or unsubstituted C1 to C20 alkylene group
- R 6 is a hydroxy group or a substituted or unsubstituted C1 to C20 alkyl group
- R 7 and R 8 are each independently a substituted or unsubstituted C1 to C20 alkyl group
- R 16 and R 17 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 20 is a methoxy group
- R 21 is a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C1 to C20 alkoxy group;
- n is an integer from 1 to 4.
- p is an integer from 0 to 4.
- q is an integer from 1 to 20;
- the compound represented by Chemical Formula 2-1 may include a compound represented by Chemical Formula 2-1-1 below.
- the compound represented by Chemical Formula 2-2 may include a compound represented by Chemical Formula 2-2-1 below.
- the compound represented by Chemical Formula 2-3 may include a compound represented by any one of Chemical Formulas 2-3-1 to 2-3-3 below.
- the compound represented by Chemical Formula 2-4 may include a compound represented by Chemical Formula 2-4-1 below.
- the compound represented by Chemical Formula 2-5 may include a compound represented by any one of Chemical Formulas 2-5-1 and 2-5-2 below.
- the compound represented by Chemical Formula 2-6 may include a compound represented by any one of Chemical Formulas 2-6-1 to 2-6-3 below.
- the third solvent may have a viscosity of 70cps or more at 25°C or a solid, and a viscosity of 3cps or more at 50°C.
- the third solvent may include a compound represented by either Formula 3-1 or Formula 3-2 below.
- R 9 to R 14 are each independently a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group.
- the compound represented by Chemical Formula 3-1 may include a compound represented by Chemical Formula 3-1-1 below.
- the compound represented by Chemical Formula 3-2 may include a compound represented by Chemical Formula 3-2-1 below.
- the first solvent may be included in an amount of 10 parts by weight to 50 parts by weight based on 100 parts by weight of the mixed solvent.
- the second solvent may be included in an amount of 10 parts by weight to 40 parts by weight based on 100 parts by weight of the mixed solvent.
- the third solvent may be included in an amount of 20 parts by weight to 50 parts by weight based on 100 parts by weight of the mixed solvent.
- the solvent may be included in an amount of 5 wt % to 99 wt %, for example, 20 wt % to 99.7 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.
- polymerizable compound containing at least one functional group represented by the above formula A-1 at the terminal 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.
- 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.
- the dielectric constant of the mixed solvent was measured at room temperature (25 ° C) in 40 ml of the solvent composition corresponding to the above examples and comparative examples in a conical tube with a liquid dielectric constant meter (Furuto, Model 871), respectively, and the viscosity of the solvent was measured by a rheometer. (Haake Company) was used to load the solvent composition 2ml and measured at room temperature (25 °C).
- the viscosities (25° C. and 50° C.) of the ink compositions of Examples 1 to 6 and Comparative Examples 1 to 3 were measured. If the viscosity at 50 ° C. is 15cps or less, it can be considered that the inkjetting property (inkjet fairness) is satisfied. X” is indicated.
- Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Viscosity (cps) (25°C) 64 87 85 63 66 67 42 33 60 168 Viscosity (cps) (50°C) 15 15 15 15 15 10 10 15 28 Available dielectric constant range 4-11 4-11 4-11 4-11 4-11 7 to 9 11.2 10.4 3.2
- Comparative Example 1 which is a one-component system, has a problem in that only the viscosity, dielectric constant, and electrical conductivity of the solvent can be implemented
- Comparative Example 2 which is a two-component system, fixes the viscosity or dielectric constant parameter using the composition ratio, and the other one
- the parameter of is not adjustable and is fixed.
- Example 1 to Example 7 which is a three-component system, have a dielectric constant of 4 to 11 while maintaining the viscosity at room temperature by adjusting the internal composition ratio of each solvent in the range of 60 cps, 70 cps, and 80 cps at room temperature at 25 ° C. It can be seen that it is possible to freely control (adjust) between them. Therefore, it is possible to maintain excellent inkjetting properties while securing storage stability due to high viscosity at room temperature, and furthermore, by freely controlling (adjusting) the dielectric constant, it is possible to secure optimal dielectrophoretic properties at the same time.
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Abstract
Description
화학식 | 점도 (25℃) | 점도 (50℃) | 유전상수 | |
제1 용매 | 1-1-1 | 30 | 9.7 | 11 |
1-1-2 | 43.1 | 12.3 | 8.4 | |
1-2-1 | 26.1 | 4.3 | 8.5 | |
1-2-2 | 33 | 9.6 | 11.2 | |
1-2-3 | 8.5 | 4 | 9.8 | |
1-2-4 | 53 | 11 | 6.5 | |
제2 용매 | 2-1-1 | 1023 | 133 | 19.4 |
2-2-1 | 354 | 43.4 | 9.6 | |
2-3-1 | solid | solid | - | |
2-3-2 | solid | solid | - | |
2-3-3 | solid | solid | - | |
2-4-1 | solid | 10.2 | 5.0* | |
2-5.1 | 127 | 21 | 13.5 | |
2-5-2 | 288 | 35 | 9.2 | |
2-6-1 | 124 | 18 | 7.5 | |
2-6-2 | 94 | 17 | 7.7 | |
2-6-3 | 89 | 17 | 7.9 | |
제3 용매 | 3-1-1 | 144 | 23.4 | 2.7 |
3-2-1 | solid | 8.5 | 2.9* |
함량 | |
(A) GaN 나노로드 | 0.2 |
(B) 혼합용매 | 99.8 |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 | 비교예 1 | 비교예 2 | 비교예 3 | |
혼합용매 (wt%) |
- | - | - | - | - | - | - | - | - | - |
- | - | - | 화학식 1-1-1 (45) |
화학식 1-1-1 (34) |
화학식 1-1-1 (36) |
- | - | 화학식 1-1-1 (60) |
- | |
- | - | - | - | - | - | - | 화학식 1-2-2(100) | - | - | |
- | - | - | - | - | - | - | - | - | - | |
화학식 2-2-1(55) | - | - | 화학식 2-2-1 (13) |
- | - | 화학식 2-2-1 (20) |
- | 화학식 2-2-1 (40) |
화학식 2-2-1 (20) |
|
- | 화학식 2-3-1(11) | - | - | - | - | - | - | - | - | |
- | - | 화학식 2-3-2(17.5) | - | - | - | - | - | - | - | |
- | - | - | - | 화학식 2-1-1(23) | - | - | - | - | - | |
- | - | - | - | - | 화학식 2-5-1(27) | - | - | - | - | |
화학식 3-1-1(20) | 화학식 3-1-1 (25) |
화학식 3-1-1 (33) |
화학식 3-1-1 (42) |
화학식 3-1-1 (43) |
화학식 3-1-1 (37) |
화학식 3-1-1 (30) |
- | - | 화학식 3-1-1 (80) |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 | 비교예 1 | 비교예 2 | 비교예 3 | |
점도 (cps)(25℃) | 64 | 87 | 85 | 63 | 66 | 67 | 42 | 33 | 60 | 168 |
점도 (cps)(50℃) | 15 | 15 | 15 | 15 | 15 | 15 | 10 | 10 | 15 | 28 |
가용 유전상수 범위 | 4~11 | 4~11 | 4~11 | 4~11 | 4~11 | 4~11 | 7~9 | 11.2 | 10.4 | 3.2 |
Claims (29)
- (A) 반도체 나노로드; 및(B) 제1 용매, 제2 용매 및 제3 용매를 포함하는 혼합 용매를 포함하고,상기 제1 용매는 25℃에서의 점도가 70cps 이하이고, 유전상수가 5 이상인 화합물을 포함하고,상기 제2 용매는 25℃에서의 점도가 80cps 이상이거나 고체이고, 유전상수가 5 이상인 화합물을 포함하고,상기 제3 용매는 유전상수가 5 미만인 화합물을 포함하는 잉크 조성물.
- 제1항에 있어서,상기 제1 용매는 50℃에서의 점도가 3cps 이상인 잉크 조성물.
- 제1항에 있어서,상기 제1 용매는 하기 화학식 1-1 또는 화학식 1-2로 표시되는 화합물을 포함하는 잉크 조성물:[화학식 1-1][화학식 1-2]상기 화학식 1-1 및 화학식 1-2에서,R1은 수소 원자 또는 *-C(=O)R'(R'은 수소 원자 또는 치환 또는 비치환된 C1 내지 C10 알킬기)이고,R2 내지 R4는 각각 독립적으로 치환 또는 비치환된 C2 내지 C20 알킬기이고,R5는 치환 또는 비치환된 C1 내지 C20 알킬기 또는 C2 내지 C10 알콕시기로 치환 또는 비치환된 C6 내지 C20 아릴기이고,L1 내지 L3은 각각 독립적으로 치환 또는 비치환된 C1 내지 C20 알킬렌기이고,n은 1 내지 20의 정수이다.
- 제1항에 있어서,상기 제2 용매는 50℃에서의 점도가 10cps 이상이거나 고체인 잉크 조성물.
- 제1항에 있어서,상기 제2 용매는 하기 화학식 2-1 내지 화학식 2-6 중 어느 하나로 표시되는 화합물을 포함하는 잉크 조성물:[화학식 2-1][화학식 2-2][화학식 2-3][화학식 2-4][화학식 2-5][화학식 2-6]상기 화학식 2-1 내지 화학식 2-6에서,L1, L2 및 L4 내지 L8은 각각 독립적으로 치환 또는 비치환된 C1 내지 C20 알킬렌기이고,R1은 수소 원자 또는 *-C(=O)R'(R'은 수소 원자 또는 치환 또는 비치환된 C1 내지 C10 알킬기)이고,R6는 히드록시기 또는 치환 또는 비치환된 C1 내지 C20 알킬기이고,R7 및 R8은 각각 독립적으로 치환 또는 비치환된 C1 내지 C20 알킬기이고,R16 및 R17은 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,R18 및 R19는 각각 독립적으로 수소 원자 또는 *-(C=O)R15(R15는 치환 또는 비치환된 C1 내지 C20 알킬기, 치환 또는 비치환된 C3 내지 C20 사이클로알킬기 또는 치환 또는 비치환된 C6 내지 C20 아릴기임)이고,R20은 메톡시기이고,R21은 치환 또는 비치환된 C1 내지 C20 알킬기 또는 치환 또는 비치환된 C1 내지 C20 알콕시기이고,m은 1 내지 4의 정수이고,p는 0 내지 4의 정수이고,q는 1 내지 20의 정수이다.
- 제1항에 있어서,상기 제3 용매는 25℃에서의 점도가 70cps 이상이거나 고체이고, 50℃에서의 점도가 3cps 이상인 잉크 조성물.
- 제1항에 있어서,상기 제1 용매는 상기 혼합 용매 100 중량부에 대해 10 중량부 내지 50 중량부로 포함되고,상기 제2 용매는 상기 혼합 용매 100 중량부에 대해 10 중량부 내지 40 중량부로 포함되고,상기 제3 용매는 상기 혼합 용매 100 중량부에 대해 20 중량부 내지 50 중량부로 포함되는 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.
- 제22항에 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 제26항 중 어느 한 항의 잉크 조성물을 이용하여 제조된 막.
- 제27항의 막을 포함하는 전기영동 장치.
- 제27항의 막을 포함하는 디스플레이 장치.
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