composition

Abstract

The present invention relates to a composition comprising at least; i) a reactive monomer; ii) a nanosized particle; and iii) a chemical compound.

Description

[0001] Composition

[0002] Field of the invention

[0003] The present invention relates to a composition, preferably to be used for forming a blue pixel area, more preferably to be used for forming a blue pixel area of a color conversion device or a color filter, comprising at least a reactive monomer and a nanosized particle; process for fabricating a composition, a composite, process for fabricating a composite, use of a composition, use of a composite, a color conversion device, and an optical device.

[0004] Background Art

[0005] WO 2017 / 054898 A1 describes a composition comprising red emission type nanocrystals, wetting and dispersing agent, propylene glycol monomethyl ether acetate as a solvent, an acryl polymer mixture including an acrylic unit including an acid group and a silane modified acrylic unit.

[0006] WO 2019 / 002239 A1 discloses a composition comprising a semiconducting light emitting nanoparticles, a polymer and a (meth)acrylate such as 1.4. cyclohexanedimethanol-monoacrylate having high viscosity around 90 cp.

[0007] Patent Literature

[0008] 1. WO 2017 / 054898 A1

[0009] 2. WO 2019 / 002239 A1

[0010] Summary of the invention

[0011] However, the inventors newly have found that there are still one or more of considerable problems for which improvement is desired, as listed below: realizing an optimized / im proved haze value of the cured layer (film) for blue pixel area of an optical device, realizing an optimized / im proved blue light scattering of the cured layer (film) for blue pixel area of an optical device, realizing an optimized / im proved uniform light emission from the cured layer led by optimized / im proved blue light scattering of the cured layer (film) for blue pixel area of an optical device, improved thermal stability of an obtained layer (film), enabling a phase separation of nanosized particle(s) and matrix material in a cured layer for blue pixel area of an optical device, improved dispersibility of nanosized particle(s) in a composition, improved good compatibility of nanosized particle(s) with a reactive monomer(s) in a composition, reducing / preventing clogging of an print nozzle when printing the composition, reducing / preventing aggregation of nanosized particles in a composition, realizing easy handling of a composition containing a nanosized particle and a reactive monomer, providing an ink-jetable composition suitable for inkjet printing.

[0012] The inventors aimed to solve one or more of the above-mentioned problems.

[0013] The present inventors have surprisingly found that one or more of the above-described technical problems can be solved by the features as defined in claims.

[0014] Technical effect of the present invention

[0015] The present invention may provide one or more of following effects; realizing an optimized / im proved haze value of the cured layer (film) for blue pixel area of an optical device, realizing an optimized / im proved blue light scattering of the cured layer (film) for blue pixel area of an optical device, realizing an optimized / im proved uniform light emission from the cured layer led by optimized / im proved blue light scattering of the cured layer (film) for blue pixel area of an optical device, improved thermal stability of an obtained layer (film), enabling a phase separation of nanosized particle(s) and matrix material in a cured layer for blue pixel area of an optical device, improved dispersibility of nanosized particle(s) in a composition, improved good compatibility of nanosized particle(s) with a reactive monomer(s) in a composition, reducing / preventing clogging of an print nozzle when printing the composition, reducing / preventing aggregation of nanosized particles in a composition, realizing easy handling of a composition containing a nanosized particle and a reactive monomer, providing an ink-jetable composition suitable for inkjet printing. of drawings

[0016] Fig. 1 : shows a cross sectional view of a schematic of one embodiment of a color conversion film (100). shows a top view of a schematic of another embodiment of a color conversion film (100) of the invention.

[0017] Fig. 3: shows a cross sectional view of a schematic of one embodiment of an optical device (300) of the invention.

[0018] Fig. 4: shows a cross sectional view of a schematic of another embodiment of an optical device (300) of the invention.

[0019] Fig. 5: shows a cross sectional view of a schematic of another embodiment of an optical device (300) of the invention.

[0020] List of reference signs in figure 1

[0021] 100. a color conversion device

[0022] 110. a light emitting moiety (optional)

[0023] 110R. a light emitting moiety (red) (optional)

[0024] 110G. a light emitting moiety (green) (optional)

[0025] 120. a matrix material (polymer)

[0026] 130. a nanosized particle (a light scattering particle)

[0027] 140. a coloring agent (optional) OR. a coloring agent (red) (optional) OG. a coloring agent (green) (optional)

[0028] MOB. a coloring agent (blue) (optional) 150. a bank

[0029] 161 . a red pixel

[0030] 162. a green pixel

[0031] 163. a blue pixel

[0032] 170. a supporting medium (a substrate) (optional)

[0033] List of reference signs in figure 2

[0034] 200. a color conversion film

[0035] 21 OR. a red pixel

[0036] 210G. a green pixel

[0037] 210B. a blue pixel

[0038] 220. a bank

[0039] List of reference signs in figure 3

[0040] 300. an optical device

[0041] 100. a color conversion device

[0042] 110. a light emitting moiety

[0043] 110R. a light emitting moiety (red) (optional)

[0044] 110G. a light emitting moiety (green) (optional)

[0045] 120. a matrix material (polymer)

[0046] 130. a nanosized particle (a light scattering particle)

[0047] 140. a coloring agent (optional) OR. a coloring agent (red) (optional) OG. a coloring agent (green) (optional)

[0048] MOB. a coloring agent (blue) (optional)

[0049] 150. a bank

[0050] 310. an optical layer / substrate

[0051] 320. a light modulator

[0052] 321 . a polarizer

[0053] 322. an electrode

[0054] 323. a liguid crystal layer

[0055] 330. a light source 331 . a LED light source

[0056] 332. a light guiding plate (optional)

[0057] 333. light emission from the light source (330)

[0058] List of reference signs in figure 4

[0059] 400. an optical device

[0060] 100. a color conversion device

[0061] 110. a light emitting moiety (optional)

[0062] 110R. a light emitting moiety (red) (optional)

[0063] 110G. a light emitting moiety (green) (optional)

[0064] 120. a matrix material (polymer)

[0065] 130. a nanosized particle (a light scattering particle)

[0066] 140. a coloring agent (optional) OR. a coloring agent (red) (optional) OG. a coloring agent (green) (optional)

[0067] MOB. a coloring agent (blue) (optional, not mentioned)

[0068] 150. a bank

[0069] 410. an optical layer / substrate

[0070] 420. a light modulator

[0071] 421 . a polarizer

[0072] 422. an electrode

[0073] 423. a liguid crystal layer

[0074] 430. a light source

[0075] 431 . a LED light source

[0076] 432. a light guiding plate (optional)

[0077] 433. light emission from the light source (330)

[0078] 440. a color filter

[0079] List of reference signs in figure 5

[0080] 500. an optical device

[0081] 100. a color conversion device

[0082] 110. a light emitting moiety (optional) 110R. a light emitting moiety (red) (optional)

[0083] 110G. a light emitting moiety (green) (optional)

[0084] 120. a matrix material (polymer)

[0085] 130. a nanosized particle (a light scattering particle)

[0086] 140. a coloring agent (optional) OR. a coloring agent (red) (optional) OG. a coloring agent (green) (optional)

[0087] MOB. a coloring agent (blue) (optional) 150. a bank

[0088] 510. an optical layer / substrate

[0089] 520. a light emitting device (e.g., OLED)

[0090] 521. a TFT

[0091] 522. an electrode (anode)

[0092] 523. a substrate

[0093] 524. an electrode (cathode)

[0094] 525. light emitting layer (e.g., OLED layer(s))

[0095] 526. light emission from a light emitting device (520)

[0096] 530. an optical layer (e.g., polarizer) (optional)

[0097] 540. a color filter

[0098] Definition of the terms

[0099] In the present specification, symbols, units, abbreviations, and terms have the following meanings unless otherwise specified.

[0100] In the present specification, unless otherwise specifically mentioned, the singular form includes the plural form and “one” or “that” means “at least one.” In the present specification, unless otherwise specifically mentioned, an element of a concept can be expressed by a plurality of species, and when the amount (for example, mass % or mol %) is described, it means sum of the plurality of species, “and / or” includes a combination of all elements and also includes single use of the element. In the present specification, when a numerical range is indicated using “to:or “ - ”, it includes both endpoints and units thereof are common. For example, 5 to 25 mol % means 5 mol % or more and 25 mol % or less.

[0101] In the present specification, the hydrocarbon means one including carbon and hydrogen, and optionally including oxygen or nitrogen. The hydrocarbyl group means a monovalent or divalent or higher valent hydrocarbon. In the present specification, the aliphatic hydrocarbon means a linear, branched or cyclic aliphatic hydrocarbon, and the aliphatic hydrocarbon group means a monovalent or divalent or higher valent aliphatic hydrocarbon. The aromatic hydrocarbon means a hydrocarbon comprising an aromatic ring which may optionally not only comprise an aliphatic hydrocarbon group as a substituent but also be condensed with an alicycle. The aromatic hydrocarbon group means a monovalent or divalent or higher valent aromatic hydrocarbon. Further, the aromatic ring means a hydrocarbon comprising a conjugated unsaturated ring structure, and the alicycle means a hydrocarbon having a ring structure but comprising no conjugated unsaturated ring structure.

[0102] In the present specification, the alkyl means a group obtained by removing any one hydrogen from a linear or branched, saturated hydrocarbon and includes a linear alkyl and branched alkyl, and the cycloalkyl means a group obtained by removing one hydrogen from a saturated hydrocarbon comprising a cyclic structure and optionally includes a linear or branched alkyl in the cyclic structure as a side chain.

[0103] In the present specification, the aryl means a group obtained by removing any one hydrogen from an aromatic hydrocarbon. The alkylene means a group obtained by removing any two hydrogens from a linear or branched, saturated hydrocarbon. The arylene means a hydrocarbon group obtained by removing any two hydrogens from an aromatic hydrocarbon. In the present specification, when polymer has a plural type of repeating units, these repeating units copolymerize. These copolymerization are any of alternating copolymerization, random copolymerization, block copolymerization, graft copolymerization, or a mixture of any of these.

[0104] According to the present invention, the term “(meth)acrylate” means a methacrylate, an acrylate or a combination of methacrylate and an acrylate.

[0105] The term “emission” means the emission of electromagnetic waves by electron transitions in atoms and molecules.

[0106] In the present specification, Celsius is used as the temperature unit. For example, 20 degrees means 20 degrees Celsius.

[0107] Detailed description of the invention

[0108] According to the present invention, the composition , preferably to be used for forming a blue pixel area, more preferably to be used for forming a blue pixel area of a color conversion device or a color filter, comprises at least, essentially consisting of or consisting of; i) a reactive monomer of formula (la), preferably it is a (meth)acrylate monomer; ii) a nanosized particle, preferably having a refractive index value in the range from 1 .5 to 3.0, preferably 2.0 to 2.8, more preferably 2.2 to 2.6; and iii) a chemical compound of formula (lla); wherein

[0109] I is 0 or 1 , preferably I is 0;

[0110] R1is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group, preferably it is a hydrogen atom, halogen atom of cl, Br or F or a methyl group;

[0111] R2is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R2is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0112] R3is a straight alkyl chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R3is a straight alkylene chain or alkoxylene chain having 5 to 20 carbon atoms, more preferably 10 to 15 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, O, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0113] Rxis at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br, I; two or more adjacent substituents Rxhere may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another.

[0114] R4is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R4is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0115] Xa-Ya(lla) wherein

[0116] Xais an terminal end group selected from one or more of members of the group consisting of phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine, carboxyl group, hetero cyclic group, silane group, sulfonic acid, hydroxyl group and phosphonic acid, preferably it is selected from phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, carboxyl group, sulfonic acid or a mixture of any of these, more preferably it is a thiol group or a carboxyl group, the most preferably it is a carboxyl group;

[0117] Yais a straight alkyl chain or straight alkoxy chain having 1 to 25 carbon atoms, or a branched alkyl chain or alkoxy chain having 3 to 25 carbon atoms, where one or more H atoms of alkyl chain or alkoxy chain may be replaced by D, F, Cl, Br, I, CN or NO2, preferably one or more H atoms of said alkyl chain or alkoxy chain is not replaced; preferably it is a straight alkyl chain or alkoxy chain having 1 to 25 carbon atoms, more preferably it is a straight alkyl chain or straight alkoxy chain having 5 to 20 carbon atoms, even more preferably it is a straight alkyl chain or straight alkoxy chain having 10 to 15 carbon atoms, furthermore preferably it is a straight alkyl chain having 10 to 15 carbon atoms.

[0118] - Nanosized particle

[0119] According to the present invention, in a preferred embodiment, said nanoparticle has a refractive index value in the range from 1 .5 to 3.0, more preferably 2.0 to 2.8, even more preferably 2.2 to 2.6. It is believed that having said refractive index can realize good scattering property. Especially it is good to scatter blue light.

[0120] Preferably, said nanosized particle is an inorganic nanosized particle and it is not any type of light emitting material, namely said nanosized particle is neither any type of quantum material, nanosized inorganic light emitting phosphor nor inorganic light emitting phosphor.

[0121] Preferably said nanosized particle is an inorganic nanosized particle, more preferably it is selected from one or more members of the group consisting of TiO2, ZnO, BaSCM, ZrO2, AI2O3, SiC>2, Ag nanoparticles and Zinc sulfide nanoparticles. These nanoparticles have the ability to scatter light in dependence on its particle size. It is believed that these materials are good to realize improved scattering property. Especially it is believed as it is good to scatter blue light.

[0122] Preferably, the average particle size of said nanosized particle is in the range from 1 nm to 100nm, preferably it is in the range from 3 to 50nm, more preferably from 5 to 30nm. It is believed that these size are especially suitable for the composition to be used for inkjetting. It is believed that these small size of the particles does not cause or reduce clogging when printing by a small nozzle.

[0123] In a preferred embodiment, the total content of the nanosized particle in the composition is in the range from 10w% to 100w% based on 100wt% of the reactive monomer of formula (la), preferably it is in the range from 30 to 90wt%, more preferably 50 to 70wt% based on 100wt% of the reactive monomer of formula (la). It is believed that the above-mentioned ranges are suitable to effectively realize one or more of above-mentioned technical effect of the nanosized particle after curing the composition.

[0124] -Chemical Compound of formula (lla) According to the present invention, the composition comprises said chemical compound of formula (lla).

[0125] Xa-Ya(lla) wherein

[0126] Xais an terminal end group selected from one or more of members of the group consisting of phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine, carboxyl group, hetero cyclic group, silane group, sulfonic acid, hydroxyl group and phosphonic acid, preferably it is selected from phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, carboxyl group, sulfonic acid or a mixture of any of these, more preferably it is a thiol group or a carboxyl group, the most preferably it is a carboxyl group;

[0127] Yais a straight alkyl chain or straight alkoxy chain having 1 to 25 carbon atoms, or a branched alkyl chain or alkoxy chain having 3 to 25 carbon atoms, where one or more H atoms of alkyl chain or alkoxy chain may be replaced by D, F, Cl, Br, I, CN or NO2, preferably one or more H atoms of said alkyl chain or alkoxy chain is not replaced; preferably it is a straight alkyl chain or alkoxy chain having 1 to 25 carbon atoms, more preferably it is a straight alkyl chain or straight alkoxy chain having 5 to 20 carbon atoms, even more preferably it is a straight alkyl chain or straight alkoxy chain having 10 to 15 carbon atoms, furthermore preferably it is a straight alkyl chain having 10 to 15 carbon atoms.

[0128] It is believed that similar carbon numbers of said alkyl chain or alkoxy chain of the chemical compound of formula (lla) works well to realize high haze value of the cured composition & scattering effect after curing.

[0129] As such chemical compound of formula (lla), publicly known materials witch satisfy above-described conditions of chemical compound of formula (lla) can be used preferably for this invention.

[0130] It is believed that said chemical compound of formula (lla) realizes improved dispersity of the nanosized particle in a composition containing a reactive monomer of formula (la). Especially, said chemical compound of formula (lla) may realize good compatibility with the reactive monomer of formula (la) in the composition and leads improved dispersity of inorganic nanosized particle in the reactive monomer or the mixture of reactive monomers of the composition.

[0131] It is also believed that the chemical compound of formula (lla) reduces or prevents aggregation of nanosized particles, clogging of the nanosized particles at a printing nozzle, namely an inkjet printing nozzle when printing. It therefore may lead smooth printing, namely smooth inkjet printing without or less causing clogging issue with better performance.

[0132] In a preferred embodiment of the present invention, the chemical compound of formula (lla) can be selected any one of the following group consisting of valeric acid (pentanoic acid, IUPAC, C=6), caproic acid (hexanoic acid, IUPAC, C=6), enanthic acid (heptanoic acid: IUPAC, C=7), caprylic acid (octanoic acid, IUPAC, C=8), pelargonic acid (nonan acid : IUPAC, C=9), Undecylic acid (undecanoic acid: IUPAC, C=l l), Lauric acid (dodecanoic acid: IUPAC, C=12), tridecylic acid (tridecanoic acid : IUPAC, C=13), myristic acid (tetradecanoic acid, IUPAC, C=14), pendadecanoic acid (pentadecanoic acid, IUPAC, C=15). More preferably, pelargonic acid (nonan acid : IUPAC, C=9), Undecylic acid (undecanoic acid : IUPAC, C=ll), Lauric acid (dodecanoic acid: IUPAC, C=12), tridecylic acid (tridecanoic acid: IUPAC, C=13), myristic acid (tetradecanoic acid, IUPAC, C=14), pendadecanoic acid (pentadecanoic acid, IUPAC, C=15) are more preferable.

[0133] In some embodiments of the present invention, at least some of said chemical compound of formula (lla) in the composition is bound to the outermost surface of the nanosized particle. In some embodiments, at least some of said chemical compound of formula (lla) in the composition is not bound to the outermost surface of the nanosized particle.

[0134] In some embodiments, at least some of said chemical compound of formula (lla) in the composition is bound to the outermost surface of the nanosized particle and some of said chemical compound of formula (lla) in the composition is not bound to the outermost surface of the nanosized particle.

[0135] In a preferred embodiment, the total content of the chemical compound of formula (lla) in the composition is in the range from 1 to 30wt% based on 100wt% of the reactive monomer of formula (la), more preferably from 5 to 25wt%, even more preferably from 10 to 15wt% based on 100wt% of the reactive monomer of formula (la). It is believed the above-mentioned range is suitable to effectively realize one or more of above-mentioned technical effect of the chemical compound of formula (lla).

[0136] -Reactive monomer

[0137] According to the present invention, the composition comprises a reactive monomer of formula (la), preferably it is a (meth)acrylate monomer. Any types of publicly available reactive monomer, e.g. (meth)acrylate monomers, of formula (la) can be used preferably.

[0138] Here, the term “(meth)acrylate“ is a general term for an acrylate and a methacrylate. Therefore, according to the present invention, the term “(meth)acrylate monomer" means a methacrylate monomer and / or an acrylate monomer. wherein

[0139] I is 0 or 1 , preferably I is 0;

[0140] R1is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group, preferably it is a hydrogen atom, halogen atom of cl, Br or F or a methyl group;

[0141] R2is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R2is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0142] R3is a straight alkyl chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R3is a straight alkylene chain or alkoxylene chain having 5 to 20 carbon atoms, more preferably 10 to 15 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0143] Rxis at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br, I; two or more adjacent substituents Rxhere may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another.

[0144] R4is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R4is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2.

[0145] It is believed that the lower viscosity is important to make a low viscosity composition suitable for inkjet printing. Therefore, a reactive monomer having a lower viscosity value is suitable to make a composition for inkjet printing. By using such reactive monomer in a composition, when it is mixed with another material such as the nanosized particle with high loading, the composition can still keep lower viscosity within the range suitable for inkjet printing.

[0146] In a preferred embodiment of the present invention, the boiling point (B.P.) of said reactive monomer is 80°C or more, preferably it is in the range from 80°C to 400°C, even more preferably from 85°C to 375°C, furthermore preferably from 90°C to 350°C. for large area uniform inkjet printing.

[0147] According to the present invention, said B.P can be estimate by the known method such as like described in Science of Petroleum, Vol. II. p.1281 (1398).

[0148] In a preferable embodiment, the composition further comprises a reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa), preferably said reactive monomer of chemical formula (llla) is a bi-functional (meth)acrylate monomer and said reactive monomer of chemical formula (IVa) is a tri-functional (meth)acrylate monomer, preferably the composition contains at least said reactive monomer of chemical formula (llla); wherein

[0149] X1is an alkyl group, aryl group or an alkoxy group or an ester group;

[0150] X2is an alkyl group, aryl group or an alkoxy group or an ester group;

[0151] R4is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group, preferably R4is a hydrogen atom, halogen atom of Cl, Br, or F, or a methyl group.

[0152] R5is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group preferably R5is a hydrogen atom, halogen atom of Cl, Br, or F, or a methyl group.; preferably the symbol X1is where on the left side of the formula represents the connecting point to the carbon atom of the end group C=CR1of the formula (I) and on the right side represents the connecting point to symbol X2of the formula (I); n is 0 or 1 ; preferably the symbol X2is where on the left side of the formula represents the connecting point to symbol X1 of the formula (I) and on the right side represents the connecting point to the end group C=CR2of the formula (I); m is 0 or 1 ; preferably at least m or n is 1 ;

[0153] R6is a straight or branched alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, preferably R6is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, S02, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0154] R7is a straight or branched alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, preferably R7is a straight alkylene chain or alkoxylene chain havingl to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, O, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0155] Rxis at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br, I; two or more adjacent substituents Rxhere may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another; more preferably said formula (llla) is represented by the following formula

[0156] (IV); wherein R9is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (V)

[0157] (V);

[0158] R10is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (VI)

[0159] (VI);

[0160] R11is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (VII) wherein R8, R8a, R8band R8care, each independently or dependently of each other at each occurrence, H, CH2CH3 or CH3; wherein at least one of R9, R10and R11is a (meth)acryl group, preferably two of R9, R10and R11are a (meth)acryl group and other one is a hydrogen atom or a straight alkyl group having 1 to 25 carbon atoms, preferably the electric conductivity (S / cm) of the (meth)acrylate monomer of formula (IV) is 1.0*1 O’10or less, preferably it is 5.0*1 O’11or less, more preferably it is in the range from 5.0*1 O’11to 1 .0*1 O’15, even more preferably it is in the range from 5.0*1 O'12to 1 .0*1 O'15.

[0161] In a preferred embodiment of the present invention, the reactive monomer of chemical formula (llla) is in the composition and the mixing ratio of the reactive monomer of chemical formula (llla) to the reactive monomer of chemical formula (la) is in the range from 1 :99 to 99:1 (formula (llla) : formula (la)), preferably from 5:95 to 50:50, more preferably from 10:90 to 40:60, even more preferably it is from 15:85 to 35:65, preferably at least one of purified reactive monomers of chemical formulae (la) and (llla) are used in the composition, more preferably the reactive monomer of chemical formula (la) and the reactive monomer of chemical formula (llla) are both obtained or obtainable by a purification method.

[0162] In a preferred embodiment, the boiling point (B.P.) of said reactive monomer of chemical formula (la) and / or the reactive monomer of chemical formula (llla) is 80°C or more, preferably the reactive monomers of chemical formula (la) and the reactive monomer of chemical formula (llla) are both 80°C or more, more preferably it is in the range from 80°C to 400°C, even more preferably from 85°C to 375°C, further more preferably from 90°C to 350°C.

[0163] In a preferred embodiment of the present invention, the viscosity of the composition is 35 cP or less at 25°C, preferably in the range from 1 to 35 cP, more preferably from 2 to 30 cP, even more preferably from 2 to 25 cP.

[0164] According to the present invention, said viscosity can be measured by rheometer Kinexus Ultra-*- (Netzsch) at 25°C. https: / / www.netzsch-thermal-analysis.com / en / products- solutions / rheology / kinexus-ultra / .

[0165] - (Meth)acrylate monomer represented by chemical formula (la) It is believed that the (meth)acrylate monomer represented by following chemical formula (la) shows much lower viscosity value than the viscosity of the (meth)acrylate monomer of formula (lla). Thus, by using the (meth)acrylate monomer represented by chemical formula (la) singly or in combination with the reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IV), a composition having lower viscosity desirable for smooth inkjet printing can be realized.

[0166] It is believed that it can realize a low viscosity composition comprising high amount of another materials, such as high loading of the nanosized particles. Thus, it is especially suitable for an inkjet printing when the composition comprises another material.

[0167] In a preferable embodiment of the present invention, the boiling point (B.P.) of said (meth)acrylate monomer of chemical formula (la) is 80°C or more, preferably the (meth)acrylate monomer of chemical formula (la) is in the range from 80°C to 400°C, more preferably from 85°C to 375°C, furthermore preferably from 90°C to 350°C for large area uniform inkjet printing.

[0168] Furthermore preferably, said R3of formula (la) is selected from the following groups. wherein represents the connecting point to oxygen atom of formula (la) in case I is 0, and it is representing the connecting point to R2of the formula (la) in case n is 1 . The furthermore preferably, said formula (la) is Lauryl methacrylate (LM, viscosity 6 cP, BP: 142°C) or Lauryl acrylate (LA, viscosity: 4.0cP, BP: 313.2°C), the most preferably it is Lauryl acrylate.

[0169] Preferably, (meth)acrylate monomers purified by using silica column are used.

[0170] - Reactive monomer of chemical formula (llla)

[0171] Preferably, said R6of formula (llla) and R7of formula (llla) are, each independently of each other, selected from the following groups.

[0172] In the above table, the two connection points to the oxygen atoms in the chemical formula for cyclic groups, heterocyclic groups, aromatic ring groups, and heteroaromatic ring groups are not indicated. This implies that any two non-adjacent CH2 or CH carbon atoms (excluding substituents substituted onto those cyclic structures) from the aforementioned groups may be directly bonded to the two oxygen atoms in chemical formula (llla) or (llla).

[0173] Particularly preferably, said R6and R7of formula (llla) are, at each occurrence, independently or differently, selected from the following groups. wherein represents the connecting point to oxygen atom of the formula or the connecting point to X2of the formula in case of R6, and wherein represents the connecting point to oxygen atom of the formula or the connecting point to X1of the formula in case of R7.

[0174] Furthermore preferably, said formula (llla) is NDDA (nonanediol diacrylate;

[0175] BP:342°C), HDDMA (hexanediol dimethacrylate; BP:307), HDDA (hexanediol diacrylate; BP:295°C ) or DPGDA (BP: 314°C).

[0176] - Reactive monomer of chemical formula (IV)

[0177] It is believed that the reactive monomer of chemical formula (IV) is useful to improve hardness / solidity of a layer made from the composition after inkjet printing. According to the present invention, a publicly known reactive monomers represented by following chemical formula (IV) can be used to improve hardness / solidity of the layer after inkjet printing and cross linking.

[0178] Very preferably, Trimethylolpropane Triacrylate (TMPTA) is used as the reactive monomer of chemical formula (IV).

[0179] In a preferable embodiment of the present invention, the amount of the reactive monomer of chemical formula (IV) based on the total amount of reactive monomers in the composition is in the range from 0.001 wt.% to 25wt.%, more preferably in the range from 0.1wt.% to 15wt.%, even more preferably from 1wt.% to 10wt.%, furthermore preferably from 3 to 7wt%.

[0180] Preferably, these reactive monomers are purified by using silica column.

[0181] -Composition

[0182] In a preferred embodiment of the present invention, said composition does not comprise quantum dot, nanosized inorganic light emitting phosphor, inorganic light emitting phosphor, and an organic light emitting material. Preferably said composition does not comprise any type of light emitting material.

[0183] According to the present invention, in a preferred embodiment, the viscosity of the composition is 35 cP or less at 25°C, preferably in the range from 1 to 35 cP, more preferably from 2 to 35 cP, even more preferably from 2 to 30 cP.

[0184] According to the present invention, preferably the composition further comprises another material selected from one or more members of the group consisting of; antioxidants, radical quenchers, a photo initiators and surfactants. Publicly known antioxidants, radical quenchers, photo initiators and / or surfactants can be used preferably like described in WO 2016 / 134820A.

[0185] In a preferred embodiment of the present invention, the composition comprises a solvent 10wt% or less based on the total amount of the composition, more preferably it is 5wt% or less, more preferably it is a solvent free composition, preferably the composition does not comprise any one of the following solvent selected from one or more members of the group consisting of ethylene glycol monoalkyl ethers, such as, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; diethylene glycol dialkyl ethers, such as, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether; propylene glycol monoalkyl ethers, such as, propylene glycol monomethyl ether(PGME), propylene glycol monoethyl ether, and propylene glycol monopropyl ether; ethylene glycol alkyl ether acetates, such as, methyl cellosolve acetate and ethyl cellosolve acetate; propylene glycol alkyl ether acetates, such as, propylene glycol monomethyl ether acetate (PGMEA), propylene glycol monoethyl ether acetate, and propylene glycol monopropyl ether acetate; ketones, such as, methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; alcohols, such as, ethanol, propanol, butanol, hexanol, cyclo hexanol, ethylene glycol, triethylene glycol and glycerin; esters, such as, ethyl 3- ethoxypropionate, methyl 3-methoxypropionate and ethyl lactate; and cyclic asters, such as, gamma-butyro-lactone; chlorinated hydrocarbons, such as chloroform, dichloromethane, chlorobenzene, trimethyl benzenes such as 1 ,3,5-trimethylbenzene, 1 ,2,4-trimethyl benzene, 1 ,2,3-trimethyl benzene, docecylbenzene, cyclohexylbenzene, 1 ,2,3,4-tetramethylbenzene, 1 ,2,3,5- tetramethylbenzene, 3-isopropylbiphenyl, 3-methylbiphenyl, 4- methylbiphenyl and dichlorobenzene, preferably said solvent is propylene glycol alkyl ether acetates, alkyl acetates, ethylene glycol monoalkyl ethers, propylene glycol, and propylene glycol monoalkyl ethers. It is believed that the less than 10wt% of solvent in the composition leads improved ink-jetting and it can avoid 2ndor more ink-jetting onto the same pixel after evaporation of the solvent.

[0186] According to the present invention, it is desirable not to add any solvent to realize large area inkjet printing with improved uniformity without causing any clogging at a nozzle and / or with good dispersity of semiconducting light emitting nanoparticles and / or with good dispersity of scattering particles.

[0187] - Process

[0188] In another aspect, the invention also relates to a process for fabricating the composition of the present invention comprising at least, essentially consisting or consisting of, following step Y1 ;

[0189] Y1 ) mixing at least i) the nanosized particle; ii) the reactive monomer of formula (la); and iii) the chemical compound of formula (lla) to obtain the composition.

[0190] Preferably said mixing can be done in an inert atmosphere such in N2 gas. Said mixing can be preferably made at room temperature.

[0191] Preferably, reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa) is / are also mixed in the mixing step Y1 ). Preferably, the process does not involve a purification, centrifugation and a vacuum drying of the nanosized particle.

[0192] Additional additives as described in the section of “additional material” can also be mixed in Step Y1 or before Y1 or after Y1 .

[0193] In another aspect, the invention also relates to a composition obtained or obtainable from the process for fabricating the composition identified above.

[0194] Composite In another aspect, the invention also relates to a composite, used in a blue pixel area of an optical device or of a color conversion layer, preferably it is a layered composite, derived or derivable from one or more of the compositions of the present invention.

[0195] In another aspect, the invention also relates to a composite, used in a blue pixel area of an optical device or of a color conversion layer, preferably it is a layered composite, containing at least;

[0196] I) a polymer;

[0197] II) a nanosized particle which is not a quantum material; and

[0198] III) a chemical compound of formula (lla); wherein said polymer is derived from at least a reactive monomer of formula (la), or said polymer is derived from a reactive monomer of formula (la) and reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa).

[0199] More details of said reactive monomers of formulae (la), (llla) and / or a reactive monomer of chemical formula (IVa) are described in the section of “reactive monomers” above; more details of said II) nanosized particle are described in the section of “Nanosized particle” and more details of said III) chemical compound of formula (lla) are described in the section of “chemical compound of formula (lla)”.

[0200] In a preferable embodiment of the present invention, said composite being a layered composite, has the average layer thickness in the range from 1 to 50pm, preferably 5 to 15pm, more preferably 8 to 15pm, furthermore preferably 8 to 12pm.

[0201] In another aspect, the invention also relates to a process of fabricating the composite of the present invention, wherein the process comprises at least, essentially consisting of, or consisting of, the following steps;

[0202] I) providing a composition of the present invention onto a substrate, II) curing the composition, preferably said curing is performed by photo irradiation and / or thermal treatment.

[0203] A composite, used in a blue pixel area of an optical device or of a color conversion layer, preferably a layered composite obtained or obtainable from the process of fabricating the composite of the present invention indicated above.

[0204] - Color conversion device (100)

[0205] In another aspect, the present invention also relates to a color conversion device (100) comprising at least a blue pixel (163) and optionally a bank (150), wherein said blue pixel (163) is partly or fully filled with the composite of the present invention. Preferably the color conversion device (100) further contains a supporting medium (170). Preferably the color conversion device (100) further comprises red pixel(161 ) and green pixel (162) in addition to said blue pixel (163). Said bank (150) defines area of said pixels.

[0206] Said composite contains

[0207] I) a polymer (matrix material (120));

[0208] II) a nanosized particle which is not a quantum material (130); and

[0209] III) a chemical compound of formula (lla), wherein said polymer is derived from at least a reactive monomer of formula (la), or said polymer is derived from a reactive monomer of formula (la) and a reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa).

[0210] In some embodiments, said red and green pixels comprise at least a matrix material (120), a light emitting moiety (110) and / or a coloring agent (140). In a preferred embodiment of the present invention, the layer thickness of the pixel is in the range from 0.1 to 100pm, preferably it is from 1 to 50pm, more preferably from 5 to 25pm.

[0211] In some embodiments of the present invention, the color conversion device (100) contains a blue pixel (163), a green pixel (162) and a red pixel (161 ), preferably the red pixel (161 ) contains a red-light emitting moiety (110R), the green pixel (162) contains a green light emitting moiety (110G) and the blue pixel (163) does not contain any light emitting moiety.

[0212] - Bank (150)

[0213] In some embodiments of the present invention, the height of the bank (150) is in the range from 0.1 to 100pm, preferably it is from 1 to 50pm, more preferably from 1 to 25pm, furthermore preferably from 5 to 20pm.

[0214] In a preferred embodiment of the present invention, the bank (150) is configured to determine the area of said pixels.

[0215] More preferably, said bank (150) is photolithographically patterned and said blue pixel (163) is surrounded by the bank (150), preferably said blue pixel (163), green pixel (162) and the red pixel (163) are all surrounded by the photolithographically patterned bank (150).

[0216] - Use

[0217] In another aspect, the present invention further relates to use of the color conversion device (100) of the present invention in an optical device (300) containing at least one functional medium (320, 420, 520) configured to modulate a light or configured to emit light.

[0218] The present invention also relates to use of the composition of the present invention for forming a blue pixel of an optical device or a color conversion device. And also relates to use of the composite of the present invention as a blue pixel area of an optical device or of a color conversion device, in another aspect.

[0219] - Optical device

[0220] In another aspect, the present invention further relates to an optical device (300) containing at least one functional medium (320, 420, 520) configured to modulate a light or configured to emit light, and the composite, or the color conversion device (100) of the present invention.

[0221] In some embodiments of the present invention, said optical device can be a liquid crystal display device (LCD), Organic Light Emitting Diode (OLED), Light Emitting Diode device (LED), Micro LED, Micro Electromechanical Systems (here in after “MEMS”), electro wetting display, or an electrophoretic display.

[0222] Therefore, in a preferred embodiment, said functional medium can be a LC layer, OLED layer, LED layer, micro-LED layer, MEMS layer, electro wetting layer and / or an electrophoretic layer. More preferably it is a LC layer, micro-LED layer or an OLED layer.

[0223] The working examples below provide descriptions of the present invention, as well as an in-detail description of their fabrication. However, the present invention is not necessary to be limited to the working examples.

[0224] Working Examples

[0225] Used materials

[0226] TiO2 dispersion: a 50%wt dispersion of TiO2 particles (average diameter size <20nm) dispersed in PGMEA (l-Methoxy-2-propylacetat) purchased from Pixiligent Technologies LLC (PTPG-2-50-PGA).

[0227] Capric acid as the chemical compound of formula (lla)

[0228] Erucic acid as a comparative example

[0229] LA: lauryl acrylate HDDA: 1 ,6-hexanediol diacrylate

[0230] LG: Ligand, Erucic acid

[0231] AO: Antioxidant, lrganox<™) 1010

[0232] PI: Photo initiator, lrganox(TM)819: Phenylbis(2,4,6- trimethylbenzoyl)phosphine oxide

[0233] Working Example 1 : preparation of ink composition for blue pixel Ink composition 1 for blue pixel is obtained by mixing 30wt% of TiO2 dispersion, 6wt% of Capric acid, 49.6wt% of LA, 12.4wt% of HDDA, 1 .0wt% of PI, 1.0wt% of AO.

[0234] Namely, said TiO2 dispersion, Capric acid, HDDA and LA are mixed and stirred for 2hours under Argon @ 40°C. Subsequently, photoinitiator PI and antioxidant AO are added to the mixture and the solvent of TiO2 dispersion is evaporated by using a rotary evaporator (evaporation for 2 hours after the pressure reached < 10 mbar).

[0235] Instead of or in addition to capric acid, caprylic acid (octanoic acid, IUPAC), pelargonic acid (nonan acid: IUPAC), Undecylic acid (undecanoic acid: IUPAC), Lauric acid (dodecanoic acid: IUPAC), tridecylic acid (tridecanoic acid: IUPAC), myristic acid (tetradecanoic acid, IUPAC), pendadecanoic acid (pentadecanoic acid, IUPAC) or a mixture of any of them can be used preferably as the chemical compound of formula (lla) for this invention.

[0236] Comparative Examples 1 and 2: preparation of ink composition for blue pixel

[0237] Ink composition 2 as comparative example 1 and ink composition 3 as comparative example 2 are fabricated in the same manner as described in working example 1 described above except for that the different conditions as described in below table 1 are applied.

[0238] Table 1 :

[0239] Workinq Example 4: fabrication of 10um-thick films with using the QD inks Film A with 10um thickness is fabricated using the Ink composition 1 obtained in working example 1 by filling glass sandwich test cell (consisting of two 0.7mm AF glass substrates separated by 10 micrometer polymer spacers and jointed by an adhesive frame) with the Ink composition 1 . Then the Ink composition 1 inside the glass cell is cured by irradiating light at 395nm, 300W / cm2for 10 sec.

[0240] In the same manner as described above, Films B and C as comparative examples are fabricated with using the Ink compositions 2 and 3 instead of the Ink composition 1 .

[0241] Table 2 shows the results of the films.

[0242] Table 2

[0243] As show in table 2, Film A shows good haze & light scattering of visible light. On the contrary, Film B and Film C are transparent in visible light and do not show light scattering effect. Thus, Ink composition 1 of the working example 1 is suitable for a blue pixel to scatter blue light and for uniform light extraction from the cured layer. Ink composition 1 is suitable for inkjetting since the viscosity is low and clogging of printing nozzle and sedimentation / aggregation of nanosized particles can be avoided / reduced.

Claims

Patent Claims1 . A composition, preferably to be used for forming a blue pixel area, more preferably to be used for forming a blue pixel area of a color conversion device or a color filter, comprising at least; i) a reactive monomer of formula (la), preferably it is a (meth)acrylate monomer; ii) a nanosized particle, preferably having a refractive index value in the range from 1 .5 to 3.0, preferably 2.0 to 2.8, more preferably 2.2 to 2.6; and iii) a chemical compound of formula (lla);whereinI is 0 or 1 , preferably I is 0;R1is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group, preferably it is a hydrogen atom, halogen atom of cl, Br or F or a methyl group;R2is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R2is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;R3is a straight alkyl chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R3is a straight alkylene chain or alkoxylene chain having 5 to 20 carbon atoms, more preferably 10 to 15 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;Rxis at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br, I; two or more adjacent substituents Rxhere may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another.R4is a straight alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R4is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;Xa-Ya(lla) whereinXais an terminal end group selected from one or more of members of the group consisting of phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine, carboxyl group, hetero cyclic group, silane group, sulfonic acid, hydroxyl group and phosphonic acid, preferably it is selected from phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, carboxylgroup, sulfonic acid or a mixture of any of these, more preferably it is a thiol group or a carboxyl group, the most preferably it is a carboxyl group;Yais a straight alkyl chain or straight alkoxy chain having 1 to 25 carbon atoms, or a branched alkyl chain or alkoxy chain having 3 to 25 carbon atoms, where one or more H atoms of alkyl chain or alkoxy chain may be replaced by D, F, Cl, Br, I, CN or NO2, preferably one or more H atoms of said alkyl chain or alkoxy chain is not replaced; preferably it is a straight alkyl chain or alkoxy chain having 1 to 25 carbon atoms, more preferably it is a straight alkyl chain or straight alkoxy chain having 5 to 20 carbon atoms, even more preferably it is a straight alkyl chain or straight alkoxy chain having 10 to 15 carbon atoms, furthermore preferably it is a straight alkyl chain having 10 to 15 carbon atoms.

2. The composition of claim 1 , wherein said nanosized particle is an inorganic nanosized particle and it is not a quantum material, preferably it is an inorganic nanosized particle, preferably it is selected from one or more members of the group consisting of TiO2, ZnO, BaSCM, ZrO2, AI2O3, SiC>2, Ag nanoparticles and Zinc sulfide nanoparticles, having the ability to scatter light in dependence on its particle size.

3. The composition of claim 1 or 2, wherein the average particle size of said nanosized particle is in the range from 1 nm to 100nm, preferably it is in the range from 3 to 50nm, more preferably from 5 to 30nm.

4. The composition of any one of preceding claims, wherein at least some of said chemical compound of formula (lla) is bound to the outermost surface of the nanosized particle.

5. The composition of any one of preceding claims, wherein at least some of said chemical compound of formula (lla) in the composition is not bounding to the outermost surface of the nanosized particle.

6. The composition of any one of preceding claims, wherein the total content of the nanosized particle in the composition is in the range from 10w% to 100w% based on 100wt% of the reactive monomer of formula (la), preferably it is in the range from 30 to 90wt%, more preferably 50 to 70wt% based on 100wt% of the reactive monomer of formula (la).

7. The composition of any one of preceding claims, wherein the total content of the chemical compound of formula (lla) in the composition is in the range from 1 to 30wt% based on 100wt% of the reactive monomer of formula (la), more preferably from 5 to 25wt%, even more preferably from 10 to 15wt% based on 100wt% of the reactive monomer of formula (la).

8. The composition of any one of preceding claims, wherein said composition does not comprise quantum dot, nanosized inorganic light emitting phosphor, inorganic light emitting phosphor, and an organic light emitting material. Preferably said composition does not comprise any type of light emitting material.

9. The composition of any one of preceding claims, further comprises a reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa), preferably said reactive monomer of chemical formula (llla) is a bi-functional (meth)acrylate monomer and said reactive monomer of chemical formula (IVa) is a tri-functional (meth)acrylate monomer, preferably the composition contains at least said reactive monomer of chemical formula (llla);whereinX1is an alkyl group, aryl group or an alkoxy group or an ester group;X2is an alkyl group, aryl group or an alkoxy group or an ester group;R4is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group, preferably R4is a hydrogen atom, halogen atom of Cl, Br, or F, or a methyl group.R5is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group preferably R5is a hydrogen atom, halogen atom of Cl, Br, or F, or a methyl group.; preferably the symbol X1iswhere on the left side of the formula represents the connecting point to the carbon atom of the end group C=CR1of the formula (I) and on the right side represents the connecting point to symbol X2of the formula (I); n is 0 or 1 ;preferably the symbol X2is where on the left side of the formula represents the connecting point to symbol X1 of the formula (I) and on the right side represents the connecting point to the end group C=CR2of the formula (I); m is 0 or 1 ; preferably at least m or n is 1 ;R6is a straight or branched alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, preferably R6is a straight alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;R7is a straight or branched alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms or an aryl group having 3 to 25 carbon atoms, preferably R7is a straight alkylene chain or alkoxylene chain havingl to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals Rx, where one or more non-adjacent CH2 groups may be replaced by RXC=CRX, C=C, Si(Rx)2, Ge(Rx)2, Sn(Rx)2, C=O, 0, C=S, C=Se, C=NRX, P(=O)(RX), SO, SO2, NRX, OS, oxygen or CONRXand where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;Rxis at each occurrence, identically or differently, H, D or an alkyl group having 1 to 20 carbon atoms, cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a hetero aromatic ring system having 5 to 60 carbon atoms, wherein H atoms may be replaced by D, F, Cl, Br, I; two or more adjacent substituents Rxhere may also form a mono- or polycyclic, aliphatic, aromatic or heteroaromatic ring system with one another;more preferably said formula (llla) is represented by the following formula (ina);(IV); wherein R9is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (V)R10is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (VI)(VI);R11is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (VII)wherein R8, R8a, R8band R8care, each independently or dependently of each other at each occurrence, H, CH2CH3 or CH3; wherein at least one of R9, R10and R11is a (meth)acryl group, preferably two of R9, R10and R11are a (meth)acryl group and other one is a hydrogen atom or a straight alkyl group having 1 to 25 carbon atoms, preferably the electric conductivity (S / cm) of the (meth)acrylate monomer of formula (IV) is 1.0*1 O’10or less, preferably it is 5.0*1 O’11or less, more preferably it is in the range from 5.0*1 O’11to 1 .0*1 O’15, even more preferably it is in the range from 5.0*1 O'12to 1 .0*1 O'15.

10. The composition of any one of preceding claims, wherein the viscosity of the composition is 35 cP or less at room temperature.11 . The composition of any one of preceding claims, comprises another material selected from one or more members of the group consisting of; antioxidants, radical quenchers, a photo initiators and surfactants.

12. The composition of any one of preceding claims, wherein the composition comprises a solvent 10wt% or less based on the total amount of the composition.

13. Process for fabricating the composition of any one of preceding claims, comprising at least following step Y1 ;Y1 ) mixing at least i) the nanosized particle; ii) the reactive monomer of formula (la); and iii) the chemical compound of formula (lla) to obtain the composition.Preferably, reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa) is / are also mixed in the mixing step Y1 ). Preferably, the process does not involve a purification, centrifugation and a vacuum drying of the nanosized particle.

14. A composite, used in a blue pixel area of an optical device or of a color conversion layer, derived or derivable from one or more of the composition of any one of claims 1 to 12.

15. A composite, used in a blue pixel area of an optical device or of a color conversion layer, containing at least;I) a polymer;II) a nanosized particle which is not a quantum material; andIII) a chemical compound of formula (lla); wherein said polymer is derived from at least a reactive monomer of formula (la), or said polymer is derived from a reactive monomer of formula (la) and reactive monomer of chemical formula (llla) and / or a reactive monomer of chemical formula (IVa),16. Process of fabricating the composite of claim 14 or 15, wherein the process comprises at least the following steps;I) providing a composition of any one of claims 1 to 12 onto a substrate,II) curing the composition, preferably said curing is performed by photo irradiation and / or thermal treatment.

17. A composite, used in a blue pixel area of an optical device or of a color conversion layer, preferably a layered composite obtained or obtainable from the process of claim 16.

18. A color conversion device (100) comprising at least a blue pixel (163) partly or fully filled with the composite of claim 14, 15 or 17, and optionally a bank (150).

19. An optical device (300) containing at least one functional medium (320, 420, 520) configured to modulate a light or configured to emit light; and the composite of claim 14, 15 or 17 in a blue pixel area, or the color conversion device (100) of claim 18.

20. Use of the composition of any one of claims 1 to 12, for forming a blue pixel of an optical device or a color conversion device.21 Use of the composite of any one of claims 14, 15 and 17 as a blue pixel area of an optical device or of a color conversion device.

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