JP2019159326A - Light converting resin composition, light converting laminated base material, and image display device using the same - Google Patents

Abstract

To provide a light converting resin composition which offers superior dispersibility and improved optical characteristics by including therein two or more types of quantum dots having a new ligand introduced therein, the quantum dots having emission center wavelengths that are different by 50 nm or more, and to provide a light converting laminated base material and an image display device using the same.SOLUTION: A light converting resin composition contains a compound comprising two or more types of quantum dots having emission center wavelengths that are different by 50 nm or more and a binder resin containing a cardo binder resin and an epoxy-containing acrylic binder resin, the quantum dots containing a polyethylene glycol ligand represented by a specific formula.SELECTED DRAWING: None

Description

The present invention relates to a light conversion resin composition, a light conversion laminated base material, and an image display device using the same.

  In an LCD (Liquid Crystal Display) television that uses a light emitting diode (LED) as a backlight unit (Back Light Unit, BLU), the LED BLU is the part that actually emits light, and is the most important in LCD televisions. This is one of the important parts.

  As a method for forming a white LED BLU, a white LED BLU is usually formed by combining red (Red, R), green (Green, G) and blue (Blue, B) LED chips, or a blue LED chip. A white color is realized using a combination of yellow and yellow phosphors having a wide half-value emission wavelength.

  However, when red, green, and blue LED chips are combined, there is a problem that the manufacturing cost is high due to the number of LED chips and complicated processes. When a yellow phosphor is combined with a blue LED chip, green and red are combined. Since the wavelength of the light is not classified, the color purity is inferior, and the problem of the decrease in color reproducibility has occurred. Therefore, recently, an optical device including quantum dots in a backlight using a blue LED chip is used. The film is applied to improve the color reproducibility and brightness of the image display device.

  However, it is unavoidable to use solvents such as toluene, hexane and chloroform using ligands of very low polarity in the production of coating compositions, so that workers can work in an environment exposed to human harmful solvents. There is an inconvenience that must be implemented.

  In addition, in the case of the optical film described above, the structure such as a barrier layer and a base material layer becomes complicated in addition to the light emitting layer containing the quantum dots, and the light emission luminance of the quantum dots is reduced accordingly. Also, when manufacturing films at very high temperatures during the manufacturing process, the problem of quantum dot quenching occurs, and long-term reliability is achieved as it is done at low process temperatures to process into optical film forms. There is a problem, so there is a need for improvement.

Patent Document 1 includes a quantum dot; a scattering particle having a core-shell structure including a TiO ₂ core portion; and a shell portion including SiO ₂ covering at least a part of the surface of the core portion; and a curable resin. It is a quantum dot composition, Comprising: The said scattering particle | grain provides the quantum dot composition which is 5 to 50 weight% on the basis of the total weight of the solid content of the said quantum dot composition.

  Patent Document 2 discloses a polymer resin layer in which a plurality of non-cadmium quantum dots are dispersed in a polymer resin and one surface or both surfaces are patterned; a first barrier film formed on one surface of the polymer resin layer; A second barrier film formed on the other surface of the polymer resin layer, and a lower surface of the polymer resin layer is prism-patterned or lens-patterned. When the lower surface is a prism pattern, the pitch of the prism pattern is 20 to 70 μm, the apex angle is 95 to 120 °, the cross section of the pattern is a triangle, and the lower surface of the polymer resin layer is In the case of lens patterning, the pitch of the lens pattern is 20 to 70 μm, and the ratio of pitch to height is 4: 1 to 10: 1. Surfaces provide an optical sheet which is semi-circular.

  Further, in the case of the optical sheet, the structure becomes complicated, and accordingly, the light emission luminance of the quantum dots is lowered and the firing temperature is low, so that the long-term reliability is inferior.

Korean Patent Registration No. 10-1718592 Korean Patent Registration No. 10-1690624

  The present invention is intended to solve the above-described problems, and its purpose is to provide light with excellent luminance and long-term reliability by including a cardo binder resin and an acrylic binder resin containing an epoxy. An object of the present invention is to provide a conversion resin composition, a light conversion laminated base material, and an image display device using the same.

  Another object of the present invention is to provide a light conversion resin capable of improving excellent dispersibility and optical characteristics by including two or more quantum dots having different emission center wavelengths of 50 nm or more from each other and introducing a new ligand. The object is to provide a composition, a light-converting laminated base material, and an image display device using the same.

  To achieve the above object, the light conversion resin composition according to the present invention includes two or more quantum dots having emission center wavelengths different from each other by 50 nm or more; a binder resin, and the binder resin includes a cardo binder resin and An epoxy-containing acrylic binder resin, wherein the quantum dots include a polyethylene glycol-based ligand disposed on a surface, and the polyethylene glycol-based ligand includes a compound represented by the following chemical formula 1-A: To do.

[Chemical Formula 1-A]

(In Formula 1-A,
R ′ is represented by Formula 1-1,

[Chemical Formula 1-1]

In Formula 1-1,
R1 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
R2 is represented by Formula 1-2,

[Chemical formula 1-2]

In Formula 1-2,
A is an oxygen atom or a sulfur atom,
R3 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
k is an integer of 1 to 100,
l is an integer from 0 to 1;
m is an integer of 0-10.

  The light conversion resin composition according to the present invention includes a cardo binder resin and an acrylic binder resin containing an epoxy, so that the formation temperature of the coating layer can be effectively processed at 100 to 250 degrees, and luminance characteristics In addition, the long-term reliability is excellent.

  In addition, the light conversion resin composition according to the present invention has an effect of being excellent in dispersibility and optical characteristics by including two or more kinds of quantum dots having different emission center wavelengths of 50 nm or more and introducing a new ligand.

  The light conversion laminated base material manufactured with the light conversion resin composition and the image display device using the same have an effect of being excellent in reliability.

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

  In the present invention, when an arbitrary member is located "on" another member, this is not only when the arbitrary member is in contact with the other member, but also between the two members. This includes cases where members are present.

  In the present invention, when any part “includes” a certain component, this does not exclude other components, and may further include other components unless otherwise stated to the contrary. Means.

<Light conversion resin composition>
The light conversion resin composition of the present invention comprises two or more types of quantum dots having emission center wavelengths different from each other by 50 nm or more; a binder resin, and the binder resin comprises a cardo binder resin and an epoxy-containing acrylic binder resin. The quantum dot includes a polyethylene glycol-based ligand disposed on a surface, and the polyethylene glycol-based ligand includes a compound represented by the following chemical formula 1-A.

[Chemical Formula 1-A]

(In Formula 1-A,
R ′ is represented by Formula 1-1,

[Chemical Formula 1-1]

In Formula 1-1,
R1 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
R2 is represented by Formula 1-2,

[Chemical formula 1-2]

In Formula 1-2,
A is an oxygen atom or a sulfur atom,
R3 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
k is an integer of 1 to 100,
l is an integer from 0 to 1;
m is an integer of 0-10.

Quantum dots The light conversion resin composition according to the present invention includes two or more types of quantum dots having emission center wavelengths different from each other by 50 nm or more, the quantum dots including a polyethylene glycol-based ligand disposed on a surface, and the polyethylene glycol-based The ligand includes a compound represented by the following chemical formula 1-A.

[Chemical Formula 1-A]
(In Formula 1-A,
R ′ is represented by Formula 1-1,

[Chemical Formula 1-1]

In Formula 1-1,
R1 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
R2 is represented by Formula 1-2,

[Chemical formula 1-2]

In Formula 1-2,
A is an oxygen atom or a sulfur atom,
R3 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
k is an integer of 1 to 100,
l is an integer from 0 to 1;
m is an integer of 0-10.

  The quantum dots contained in the light conversion resin composition of the present invention are nano-sized semiconductor materials. Atoms form molecules, and molecules form a collection of small molecules called clusters to form nanoparticles. When such nanoparticles have semiconductor characteristics, they are called quantum dots. Such a quantum dot has a characteristic of emitting energy corresponding to the energy band gap when it is excited by receiving energy from the outside. In short, the light conversion resin composition of the present invention can convert light into green light and red light through an incident blue light source by including such quantum dots.

  The quantum dots are not particularly limited as long as they can emit light by stimulation with light, but are preferably non-cadmium-based, for example, II-VI group semiconductor compounds, III-V group semiconductor compounds, One or more selected from IV-VI group semiconductor compounds and Group IV elements or compounds containing the same can be used.

  The II-VI group semiconductor compound is a two-element compound selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeS 3dCe, selected from the group consisting of CdZe, ZnDe, ZnSe, HgSeTe, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HdZnSe, CdZe , CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof. It may be one or more selected from the group consisting of elemental compounds.

  The group III-V semiconductor compound is a two-element compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; GANP, GANAS A ternary compound selected from the group consisting of GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, And it may be one or more selected from the group consisting of classical element compound selected from the group consisting of mixtures.

  The IV-VI group semiconductor compound is a two-element compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbS Or three or more elements selected from the group consisting of SnPbTe and mixtures thereof; and one or more elements selected from the group consisting of four elements selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe and mixtures thereof Good.

  The Group IV element or a compound containing the element is an elemental compound selected from the group consisting of Si, Ge, and a mixture thereof; and a group consisting of a two-element compound selected from the group consisting of SiC, SiGe, and a mixture thereof. Although it may be one or more selected, it is not limited to these.

  The quantum dots may have a homogenous single structure; a double structure such as a core-shell structure, a gradient structure, or the like; or a mixed structure thereof. For example, in the core-shell dual structure, the materials constituting each core and shell may be composed of different semiconductor compounds as mentioned above. More specifically, the core is a two-element compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; Three elemental compounds selected from the group consisting of GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and GaAlNAs, GaAlNSb, GaAlPAs , GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and It may include one or more materials selected from the group consisting of classical element compound selected from the group consisting of mixtures, but is not limited thereto. The shell may include one or more materials selected from ZnSe, ZnS, and ZnTe, but is not limited thereto.

  For example, examples of the core-shell structure quantum dots include InP / ZnS, InP / ZnSe, InP / GaP / ZnS, InP / ZnSe / ZnS, InP / ZnSeTe / ZnS, and InP / MnSe / ZnS.

  The quantum dots may be synthesized by a wet chemical process, a metalorganic chemical vapor deposition (MOCVD) process, or a molecular beam epitaxy process (MBE). It is not something.

  In the present invention, the quantum dots may be non-cadmium quantum dots. Specifically, the quantum dots may include non-cadmium quantum dots.

  In the present invention, it is preferable that the quantum dot is a non-cadmium quantum dot because the risk of environmental pollution can be suppressed and it is not harmful to the human body.

  The non-cadmium-based quantum dots are two or more quantum dots having different emission center wavelengths, specifically 50 nm or more different from each other for light conversion into green light and red light using an incident blue light source. including. Preferably, the non-cadmium quantum dots may include two or more types of quantum dots having emission center wavelengths different from each other by 70 nm or more.

  When the difference between the emission center wavelengths of the two or more kinds of non-cadmium quantum dots is within the above range, there is an advantage that a display with excellent image quality can be provided with wide color reproducibility.

  In the non-cadmium-based quantum dot, the quantum dot is excellent in that a green quantum dot having an emission center wavelength range of 510 nm to 540 nm and a red quantum dot having an emission center wavelength range of 610 nm to 630 nm are used. This is effective for realizing color reproducibility. Preferably, the quantum dot may include the green quantum dot and the red quantum dot whose emission center wavelength range is within the range, and in this case, a quantum dot satisfying each of the emission wavelengths is applied. Accordingly, since a color filter of a white light source formed by blue transmitted light, green light emission, and red light emission of a blue light source can be used, there is an advantage that a display device having a wide color reproducibility can be provided.

  The polyethylene glycol-based ligand is disposed on the surface of the quantum dot by chemical bonding.

  Specifically, the quantum dot according to the present invention includes a polyethylene glycol-based ligand including a compound represented by the following chemical formula 1-A arranged on the surface. Specifically, the polyethylene glycol-based ligand is disposed on the surface of the quantum dot by chemical bonding.

[Chemical Formula 1-A]

(In Formula 1-A,
R ′ is represented by Formula 1-1,

[Chemical Formula 1-1]

In Formula 1-1,
R1 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
R2 is represented by Formula 1-2,

[Chemical formula 1-2]

In Formula 1-2,
A is an oxygen atom or a sulfur atom,
R3 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
k is an integer of 1 to 100,
l is an integer from 0 to 1;
m is an integer of 0-10.

  In the present invention, the alkyl group may be linear or branched, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl. 1-ethyl-butyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2- Ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethylheptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl , There is a 5-methylhexyl, and the like.

  In the present invention, the explanation regarding the alkyl group can be applied except that the alkylene group is divalent.

  In the present invention, * means a linking group.

  The compound represented by the chemical formula 1-A may be represented by the following chemical formula 1-3.

[Chemical formula 1-3]
(In Formula 1-3,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
o is an integer from 0 to 5,
p is an integer of 0 to 1,
q is an integer of 1 to 50).

  In the case of quantum dots containing ligands such as oleic acid and oleylamine, they are well dispersed in highly volatile non-polar solvents such as hexane and chloroform. Propylene glycol solvents such as propylene glycol methyl ether acetate (PGMEA) used when manufacturing display elements have a problem that their dispersibility is very fragile. However, since the quantum dot according to the present invention uses a polyethylene glycol-based ligand, it is well dispersed in a solvent such as PGMEA, so that the workability is facilitated and the health of the worker can be further protected. When the compound represented by the chemical formula 1-3 is used as the compound represented by the chemical formula 1-A, the above-described advantages are maximized.

  Specific examples of the polyethylene glycol-based ligand include 2- (2-methoxyethoxy) acetic acid (WAKO), 2- [2- (2-methoxyethoxy) ethoxy] acetic acid (2- [2- (2-methoxyethoxy). ) Ethoxy] acetic acid (WAKO), succinic acid mono- [2- (2-methoxy-ethoxy) -ethyl] ester, malonic acid mono- [2- (2-methoxy-ethoxy) -ethyl] ester, pentandionic acid Mono- {2- [2- (2-ethoxy-ethoxy) -ethoxy] -ethyl} ester, {2- [2- (2-ethyl-hexyloxy) -ethoxy] -ethoxy} -acetic acid, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- (2-Ethoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy ) -Ethyl] ester, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- (2- {2- [2- (2-methoxy-ethoxy) -ethoxy]). -Ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, malonic acid mono- [2- (2- {2- [2- (2- {2 -[2- (2-Isobutoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, hexanedioic acid mono- [2- (2- {2- [2 -(2-methoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, 2-oxo-hexanedioic acid 6- (2- {2- [2- (2-ethoxy-ethoxy) -ethoxy] -Ethoxy} -ethyl Ester, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- (2- {2- [2- (2- {2- [2- (2- {2 -[2- (2-Methoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -Ethoxy} -ethoxy) -ethyl] ester, O- (succinyl) -O′-methyl polyethylene glycol 2′000 (Aldrich), (2-butoxy-ethoxy) -acetic acid ((2-butoxy-ethoxy) -acetic acid (WAKO), {2- [2- (carboxymethoxy) ethoxy] ethoxy} acetic acid (WAKO), 2- [2- (benzyloxy) ethoxy] acetic acid, (2-carboxymethoxy-ethoxy) ) -Acetic acid (WAKO), (2-butoxy-ethoxy) -acetic acid ((2-butoxy-ethoxy) -acetic acid (WAKO)) and the like, but not limited thereto.

  The non-cadmium quantum dots are not highly volatile solvents such as toluene, hexane and chloroform by using polyethylene glycol ligands, like propylene glycol monomethyl ether acetate used in color filter mass production lines. Even if a simple solvent is used, good dispersion characteristics of quantum dots can be imparted.

  The non-cadmium quantum dots containing the polyethylene glycol-based ligand may be included at 5% to 150%, more preferably 10% to 100%, with respect to the entire quantum dots. When the content of the non-cadmium quantum dots containing the polyethylene glycol ligand is less than the above range, the dispersion characteristics of the quantum dots may be somewhat poor, and when exceeding the above range, the dispersion characteristics of the quantum dots are reduced. Although it is excellent, since the hardening characteristic of a coating film may fall somewhat, it is preferable that it is contained so that the said range may be satisfy | filled.

  The quantum dots may be contained in an amount of 1 to 40 parts by weight, preferably 2 to 20 parts by weight, based on 100 parts by weight of the solid content of the light conversion resin composition. When the quantum dot is included in the range, there is an advantage that the light emission efficiency is excellent and the reliability of the coating layer is excellent. When the quantum dots are included below the range, the light conversion rate of green light and red light is insufficient. When the quantum dots exceed the range, the emission of blue light is relatively reduced, and color reproducibility is reduced. Inferior problems can occur.

Binder resin The light conversion resin composition by this invention contains binder resin, The said binder resin can contain a thermosetting resin or alkali-soluble resin. Specifically, the binder resin may include an epoxy-containing acrylic binder resin and a cardo binder resin as a thermosetting resin or an alkali-soluble resin.

  The epoxy-containing acrylic binder resin may include at least one repeating unit of the following chemical formulas 2 to 4.

[Chemical formula 2]

[Chemical formula 3]

[Chemical formula 4]

(In the above chemical formulas 2-4,
R4, R5 and R6 are each independently hydrogen or a methyl group).

  When an epoxy-containing acrylic binder resin containing at least one repeating unit of Chemical Formula 2 to Chemical Formula 4 is included, it has excellent mechanical properties and color conversion due to excellent light conversion rate and excellent light maintenance rate of the light conversion resin composition. Reproducibility and reliability can be excellent.

  The cardo binder resin has reactivity due to the action of light and heat and acts as a dispersion medium for quantum dots. The cardo binder resin contained in the light conversion resin composition of the present invention is not limited as long as it acts as a binder resin for quantum dots and can be used as a support for the light conversion coating layer.

  The cardo binder resin may include at least one repeating unit among the following chemical formulas 5 to 10.

[Chemical formula 5]

[Chemical formula 6]

[Chemical formula 7]

[Chemical formula 8]

(In the above chemical formulas 5-8,
X and X ′ are each independently a single bond, —CO—, —SO ₂ —, —C (CF ₃ ) ₂ —, —Si (CH ₃ ) ₂ —, —CH ₂ —, —C ( _{CH 3) 2 -, - O-} ,
Y is an acid anhydride residue;
Z is an acid dianhydride residue;
R7, R7 ', R8, R8', R9, R9 ', R10, R10', R11, R11 ', R12 and R12' are each independently a hydrogen atom or a methyl group;
R13, R13 ′, R14 and R14 ′ are each independently a linear alkylene group having 1 to 6 carbon atoms or a branched alkylene group having 3 to 6 carbon atoms, wherein the alkylene group is an ester bond, Interrupted by at least one of a cycloalkylene group having 6 to 14 carbon atoms and an arylene group having 6 to 14 carbon atoms;
R15, R15 ′, R16, R16 ′, R17, R17 ′, R18 and R18 ′ each independently represents a hydrogen atom, a halogen atom, a straight-chain alkyl group having 1 to 6 carbon atoms or a 3 to 6 carbon atoms. A branched alkyl group,
r and s are integers satisfying 0 ≦ m ≦ 30 and 0 ≦ n ≦ 30,
However, r and s are not 0 at the same time. )
[Chemical formula 9]
[Chemical formula 10]
(In the above chemical formulas 9 and 10,
Each P is independently
R19 and R20 are each independently hydrogen, hydroxy group, thiol group, amino group, nitro group or halogen atom,
Ar1 is each independently a C6-C15 aryl group,
Y ′ is an acid anhydride residue;
Z ′ is an acid dianhydride residue;
A ′ is O, S, N, Si or Se,
a and b are each independently an integer of 1 to 6,
c and d are each independently an integer of 0 to 30;
However, c and d are not 0 at the same time.

  When the light conversion resin composition according to the present invention includes a cardo binder resin containing at least one repeating unit among the repeating units represented by Chemical Formulas 5 to 10, the inter-process reliability is excellent, and outgas generation is minimized. Thus, no afterimage is generated when the panel is operated, and an excellent antireflection effect provides high image quality, excellent heat resistance, chemical resistance, durability, and reliability.

  Y in the chemical formulas 5 and 7 is a residue of an acid anhydride, and is obtained by reacting a bisphenol epoxy acrylate compound, which is a synthetic intermediate of the cardo binder resin of the present invention, with an acid anhydride compound. The acid anhydride compound into which the residue Y can be introduced is not particularly limited, and examples thereof include maleic anhydride, succinic anhydride, itaconic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, and methylendomethylene anhydride. Examples thereof include tetrahydrophthalic acid, chlorendic anhydride, and methyltetrahydrophthalic anhydride.

  Z in Chemical Formulas 6 and 8 is an acid dianhydride residue, and is obtained by reacting a bisphenol epoxy acrylate compound, which is a synthetic intermediate of the cardo binder resin of the present invention, with an acid dianhydride compound. The acid dianhydride compound into which the residue Z can be introduced is not particularly limited, and examples thereof include pyromellitic anhydride, benzophenonetetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, and the like. An aromatic polyhydric carboxylic acid anhydride is mentioned.

  The “acid dianhydride” means a compound containing two acid anhydride groups in the molecule.

  In the present invention, the method for producing the cardo binder resin is not particularly limited. For example, after a bisphenol compound and an epoxy compound are reacted to synthesize a bisphenol epoxy compound, the synthesized bisphenol epoxy compound is reacted with an acrylate compound to synthesize a bisphenol epoxy acrylate compound, and then the bisphenol epoxy acrylate compound is acid anhydride Product, acid dianhydride, or a mixture thereof, but is not limited thereto.

  The weight ratio of the cardo binder resin to the epoxy-containing acrylic binder resin may be 10:90 to 90:10. When the ratio of the cardo binder resin and the epoxy-containing acrylic binder resin is within the above range, the coating film has excellent thermosetting characteristics during the post-baking heat treatment process after coating. There is an advantage that it is excellent, and when it is out of the above range, the degree of cure of the coating film is insufficient and the reliability can be lowered.

  The binder resin may be included in an amount of 1 to 40 parts by weight, preferably 1 to 30 parts by weight, and more preferably 2 to 10 parts by weight with respect to 100 parts by weight as a whole of the light conversion resin composition. When the binder resin is included in the above range, it is preferable because thermosetting is easy, film reduction is prevented during thermosetting, and coating properties are improved. When the binder resin is included in less than the above range, the film strength may be reduced due to insufficient degree of cure, and when the binder resin is included in excess of the above range, the coating property may be slightly reduced and uniform. Formation of the coating can be somewhat difficult.

Scattering Particles The light conversion resin composition according to the present invention can contain scattering particles.
As the scattering particles, a normal inorganic material can be used, and a metal oxide having an average particle diameter of 50 to 1,000 nm can be preferably contained.

Specifically, the metal oxide includes Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ITO, IZO, ATO, ZnO—Al, Nb _2. One type selected from the group consisting of O ₃ , SnO, MgO and combinations thereof is possible. If necessary, a material surface-treated with a compound having an unsaturated bond such as acrylate can also be used.

  However, when the light conversion resin composition according to the present invention includes scattering particles, it is possible to increase the overall light efficiency in the light conversion coating layer by increasing the path of light emitted from the quantum dots through the scattering particles. It is preferable because it is possible.

  The scattering particles may have an average particle diameter of 50 to 1,000 nm, and preferably those in the range of 100 to 500 nm. At this time, if the particle size is too small, it is not possible to expect a sufficient scattering effect of the light emitted from the quantum dots. On the other hand, if the particle size is too large, it will sink into the composition or be uniform. Since the surface of the self-luminous layer having a high quality cannot be obtained, the surface is used by appropriately adjusting within the above range.

  The scattering particles may be included in an amount of 0.5 to 20 parts by weight, preferably 1 to 15 parts by weight with respect to 100 parts by weight of the total solid content of the light conversion resin composition. It is preferable that the scattering particles are included in the range because the effect of increasing the emission intensity can be maximized. When the scattering particles are included in less than the range, it may be difficult to secure the emission intensity to be obtained. When the scattering particles exceed the range, the transmittance of the blue irradiation light is reduced and the emission is reduced. Since a problem may occur in efficiency, it is preferable to use it appropriately within the above range.

Thermosetting Compound The light conversion resin composition according to the present invention can contain a thermosetting compound.
The average molecular weight of the thermosetting compound is preferably 20,000 or less, and more preferably 1,000 to 20,000. When the average molecular weight of the thermosetting compound satisfies the above conditions, the remaining film ratio and heat resistance are excellent.

  The thermosetting compound is preferably composed of 10 to 80 parts by weight of an epoxy compound with respect to 100 parts by weight as a whole of the light conversion resin composition. When the content of the thermosetting compound is less than the above range, reliability due to insufficient coating strength can be lowered.

  Specific examples of the thermosetting compound that satisfies the above conditions include 2- [4- (2,3-epoxypropoxy) phenyl] -2- [4- [1,1-bis [4-([2,3 -Epoxypropoxy] phenyl)] ethyl] phenyl] propane and 1,3-bis [4- [1- [4- (2,3-epoxypropoxy) phenyl] -1- [4- [1- [4- ( 2,3-epoxypropoxyphenyl) -1-methylethyl] phenyl] ethyl] phenoxy] -2-propanol, 2- [4- (2,3-epoxypropoxy) phenyl] -2- [4- [ 1,1-bis [4-([2,3-epoxypropoxy] phenyl)] ethyl] phenyl] propane and the like. Examples of commercially available products include JER 157S65, 157S70 (trade name; JER product). These can be used alone or in combination of two or more.

  The thermosetting compound according to the present invention may further include an epoxy resin other than the bisphenol A novolac type epoxy compound. Preferred examples of the epoxy resin that can be used together with the bisphenol A novolac type epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, diphenyl ether type epoxy resin, hydroquinone type. Epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin, fluorene epoxy resin, phenol novolac type epoxy resin, orthocresol novolac type epoxy resin, trishydroxyphenylmethane type epoxy resin, trifunctional type epoxy resin, tetraphenol ethane type epoxy resin , Dicyclomethanedienephenol type epoxy resin, hydrogenated bisphenol A type epoxy resin, bisphenol A nucleated polyol type epoxy resin, poly B propylene glycol type epoxy resins, may be used glycidyl ester type epoxy resin, glycidyl amine type epoxy resin, glyoxal type epoxy resins, alicyclic polyfunctional epoxy resin, a heterocyclic epoxy resin or the like. These epoxy resins can be used by being further included in the bisphenol A novolac type epoxy resin alone or in combination of two or more.

  As the above-mentioned epoxy resin, the following commercially available products can be used. More specifically, YDF-175S (product of Toto Kasei Co., Ltd.) etc. as bisphenol F type epoxy resin, YDB-715 (product of Toto Kasei Co., Ltd.) etc. as bisphenol A type epoxy resin, EPICLON EXA1514 (large) as bisphenol S type epoxy resin Nippon Ink Chemical Industry Co., Ltd.), hydroquinone type epoxy resin YDC-1312 (Toto Kasei Co., Ltd. product), naphthalene type epoxy resin EPICLON EXA4032 (Dainippon Ink Chemical Industry Co., Ltd. product), biphenyl type epoxy resin Epicoat YX4000H JER 157S65 or 157S70 (product of JER) as bisphenol A novolak type epoxy resin, etc. EOCN-102S, 103S, 104S or 1020 (Nippon Kayaku Co., Ltd.) as cresol novolac type epoxy resin, and Epicoat 1032H60 (product of JER Co., Ltd.) as trishydroxyphenylmethane type epoxy resin, such as JER152 154 (product of JER) ), Etc., VG3101M80 (product of Mitsui Chemicals) as a trifunctional epoxy resin, etc., Soepicoat 10315 (product of JER), etc. with tetraphenolethane type epoxy resin, ST-3000 (Toto Kasei Co., Ltd.) as a hydrogenated bisphenol A type epoxy resin Products), Epicoat 190P (product of JER) as glycidyl ester type epoxy resin, YH-434 (product of Toto Kasei) as glycidylamine type epoxy resin, YDG as glyoxal type epoxy resin 414 (Toto Kasei Company), etc., Epolead GT-401 as the alicyclic polyfunctional epoxy resin (Daicel Chemical Company) and the like. The said epoxy resin can be used individually or in combination of 2 types or more, respectively.

  The thermosetting compound is preferably 10 to 80% by weight, more preferably 15 to 70% by weight, based on 100% by weight of the solid content of the light conversion resin composition. When the thermosetting compound is contained within the above range, the remaining film ratio and flatness are good.

Curing Accelerator The light conversion resin composition according to the present invention may contain a curing accelerator.
As the curing accelerator, for example, one or more compounds selected from the group consisting of a carboxylic acid compound, an organic sulfur compound having a thiol group, and an acid generator can be preferably used, but are not limited thereto.

  The carboxylic acid compound is preferably an aromatic heteroacetic acid, specifically phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxy. Examples include phenylthioacetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, naphthoxyacetic acid, 1,2,4-benzenetricarboxylic acid anhydride, and the like. It is not limited.

  Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxyethyl). -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptobutyrate), pentaerythritol Examples include tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), and tetraethylene glycol bis (3-mercaptopropionate), but are not limited thereto. .

  Specific examples of the acid generator include 4-hydroxyphenyldimethylsulfonium p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate, 4-acetoxyphenyldimethylsulfonium p-toluenesulfonate, 4-acetoxyphenylmethylbenzylsulfonium. Onium salts such as hexafluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate, diphenyliodonium p-toluenesulfonate, diphenyliodonium hexafluoroantimonate, nitrobenzyl tosylates, benzoin tosylates, etc. Is mentioned.

  The curing accelerator is 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight based on 100 parts by weight of the solid content of the light conversion resin composition with respect to 100 parts by weight of the binder resin and the thermosetting compound. May be included in parts. When the content of the curing accelerator satisfies the above range, the photo-conversion resin composition including the sensitivity is increased in sensitivity and the curing time of the coating film is shortened, so that productivity is improved and high reliability is realized. There is an advantage that the strength of the coating film formed using the same and the surface smoothness of the coating film portion can be improved. On the other hand, when the content of the curing accelerator is less than the above range, the decrease in the curing degree is not overcome, so that wrinkles may occur during the subsequent process. There exists a problem that the light emission characteristic of a resin composition falls and brightness becomes inadequate.

Solvent The light conversion resin composition according to the present invention may contain a solvent.
The solvent contained in the light conversion resin composition of the present invention can usually contain one or more kinds, and particularly a solvent having a boiling point of 100 to 180 ° C. is contained by 50% or more with respect to the total solvent. In this case, the flow characteristics are excellent, and coating unevenness and dry foreign matter are not generated. Therefore, it is possible to provide a good light-converting laminated base material having no coating foreign matter.

  Specific examples include one or more selected from the group consisting of ethers, aromatic hydrocarbons, ketones, alcohols, esters, amides, and the like. Specifically, propylene glycol monomethyl ether acetate , Ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, mesitylene, methyl amyl ketone, methyl isobutyl ketone and ethyl 3-ethoxypropionate, 1,3-butylene glycol diacetate, ethyl-3- Ethoxypropionate, propylene glycol diacetate, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol diethyl ether, methoxy buty Acetate, may be one or to two or more selected from the group consisting of ethylene glycol and γ- butyrolactone.

  When the solvent having a boiling point of less than 100 ° C. is 50% or more of the total solvent, the drying speed is fast, and thus the surface of the coating film may be uneven during the vacuum drying process, causing defects. However, when the solvent having a boiling point exceeding 180 ° C. is 50% or more of the total solvent, it may cause a problem that the required time (Tact-time) becomes long during the vacuum drying process. Therefore, it is appropriate to use a solvent having a boiling point of 100 to 180 ° C. as a solvent of 50% or more of the total solvent.

  The solvent may be included in an amount of 50 to 90% by weight, preferably 60 to 85% by weight, based on 100% by weight of the light conversion resin composition. When the solvent is included in the above range, the coating property is improved when applied by a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), or an ink jet. obtain.

Additives The light conversion resin composition according to the present invention may further contain known additives according to various purposes. As such additives, for example, additives such as fillers, curing aids, other polymer compounds, adhesion promoters, antioxidants, ultraviolet absorbers, and aggregation inhibitors can be used in combination. . These additives can be used alone or in combination of two or more, and are preferably used in an amount of 1% by weight or less in the entire composition in consideration of light efficiency and the like.

  Examples of the filler include glass, silica, and alumina, and examples thereof include thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane.

  Specific examples of the other polymer compounds include curable resins such as maleimide resins, and thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane. .

  Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, and N- (2-aminoethyl). ) -3-Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltri Examples include methoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, and 3-mercaptopropyltrimethoxysilane.

  Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

  Specific examples of the ultraviolet absorber include 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole, alkoxybenzophenone, and the like. Specific examples include sodium polyacrylate.

  Specific examples of the aggregation inhibitor include sodium polyacrylate.

  The additive can be appropriately added and used by those skilled in the art as long as the effects of the present invention are not impaired. For example, the additive is used in an amount of 0.05 to 10 parts by weight, preferably 0.1 to 10 parts by weight, more preferably 0.1 to 5 parts by weight with respect to 100 parts by weight as a whole of the light conversion resin composition. However, the present invention is not limited to these.

<Light conversion laminated substrate>
The light conversion laminated base material by this invention contains the hardened | cured material of the light conversion resin composition formed on the base material. The light conversion laminated base material can be processed more effectively at a coating layer forming temperature of 100 to 250 ° C. on a glass substrate by including a cured product of the light conversion resin composition. Excellent brightness and long-term reliability compared to other structures.

  The light conversion layered substrate may be silicon (Si), silicon oxide (SiOx), or a polymer substrate, and the polymer substrate is polyethersulfone (PES), polycarbonate (PC), or the like. Also good.

  The light conversion layered substrate can be formed by applying the light conversion resin composition and thermosetting it.

<Image display device>
The image display device according to the present invention includes the light conversion laminated base material described above. Specifically, the image display device is a liquid crystal display (liquid crystal display device; LCD), an organic EL display (organic EL display device), a liquid crystal projector, a display device for a game machine, a display device for a portable terminal such as a mobile phone, digital Examples thereof include display devices such as camera display devices and car navigation display devices, and color display devices are particularly suitable.

  The image display device may further include a configuration known to those skilled in the art in the technical field of the present invention, except that the image display device includes the light conversion laminated base material. The image display apparatus which can apply a light conversion laminated substrate is included.

  Hereinafter, in order to explain this specification concretely, an example is taken and explained in detail. However, the examples according to the present specification may be modified in various other forms, and the scope of the present specification is not construed to be limited to the examples described in detail below. The examples herein are provided to more fully explain the present specification to those skilled in the art. In addition, “%” and “parts” indicating the content are based on weight unless otherwise specified.

Manufacturing <br/> Preparation of the scattering particle dispersion 1: particle size 220nm of TiO ₂ as a manufacturing scattering particles of the scattering particle dispersion S1 (Huntsman TR-88) 70.0 parts by weight, DISPERBYK-2001 as a dispersant ( BYK Co., Ltd.) 4.0 parts by weight and 26 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed / dispersed by a bead mill for 12 hours to prepare a scattering particle dispersion S1.

Synthesis Example 1: Synthesis of green quantum dots (Q-1)
Indium acetate 0.4 mmol (0.058 g), palmitic acid 0.6 mmol (0.15 g) and 1-octadecene 20 mL were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen. After heating to 280 ° C., a mixed solution of tris (trimethylsilyl) phosphine (TMS ₃ P) 0.2 mmol (58 μL) and trioctylphosphine 1.0 mL was rapidly injected and allowed to react for 0.5 minutes.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, followed by 4.8 mmol of selenium (Se / TOP) in trioctylphosphine, and the final mixture was allowed to react for 2 hours. Ethanol was added to the reaction solution rapidly cooled to room temperature, and the precipitate obtained by centrifugation was vacuum filtered and then dried under reduced pressure to form an InP / ZnSe core-shell.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of sulfur (S / TOP) in trioctylphosphine was added, and the final mixture was reacted for 2 hours. Ethanol is added to the reaction solution that has been rapidly cooled to room temperature, and the precipitate obtained by centrifugation is filtered under reduced pressure and then dried under reduced pressure to obtain InP / ZnSe / ZnS core-shell structure quantum dots, which are then dispersed in chloroform. I let you.

  The maximum emission peak of the emission spectrum of the obtained nano quantum dots was 515 nm, and 5 mL of the quantum dot solution was put in a centrifuge tube, and 20 mL of ethanol was added and precipitated. The supernatant is discarded through centrifugation, 2 mL of chloroform is added to the precipitate to disperse the quantum dots, 0.50 g of (2-butoxy-ethoxy) -acetic acid is added, and the mixture is heated to 60 ° C. in a nitrogen atmosphere. The reaction was continued for 1 hour.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, and then centrifugation was performed to separate the precipitate. Then, 4 mL of propylene glycol monomethyl ether acetate was added and the mixture was heated to 80 ° C. It was dispersed while heating. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 516 nm.

Synthesis Example 2: Synthesis of green quantum dots (Q-2)
5 mL of the quantum dot solution dispersed in chloroform synthesized in Synthesis Example 1 was placed in a centrifuge tube, and 20 mL of ethanol was added to cause precipitation. The supernatant is discarded through centrifugation, and 2 mL of chloroform is added to the precipitate to disperse the quantum dots, and then 0.5 g of O- (succinyl) -O′-methyl polyethylene glycol 2′000 (Aldrich) is added. The mixture was reacted for 1 hour while heating to 60 ° C. in a nitrogen atmosphere.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, and then centrifugation was performed to separate the precipitate. Then, 4 mL of propylene glycol monomethyl ether acetate was added and the mixture was heated to 80 ° C. It was dispersed while heating. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 515 nm.

Synthesis Example 3: Synthesis of green quantum dots (Q-3)
Indium acetate 0.4 mmol (0.058 g), palmitic acid 0.6 mmol (0.15 g) and 1-octadecene 20 mL were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen. After heating to 280 ° C., a mixed solution of tris (trimethylsilyl) phosphine (TMS ₃ P) 0.2 mmol (58 μL) and trioctylphosphine 1.0 mL was rapidly injected and allowed to react for 1 minute.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, followed by 4.8 mmol of selenium (Se / TOP) in trioctylphosphine, and the final mixture was allowed to react for 2 hours. Ethanol was added to the reaction solution rapidly cooled to room temperature, and the precipitate obtained by centrifugation was vacuum filtered and then dried under reduced pressure to form an InP / ZnSe core-shell.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of sulfur (S / TOP) in trioctylphosphine was added, and the final mixture was reacted for 2 hours. Ethanol is added to the reaction solution that has been rapidly cooled to room temperature, and the precipitate obtained by centrifugation is filtered under reduced pressure and then dried under reduced pressure to obtain InP / ZnSe / ZnS core-shell structure quantum dots, which are then dispersed in chloroform. I let you.

  The maximum emission peak of the emission spectrum of the obtained nano quantum dots was 526 nm, and 5 mL of the quantum dot solution was put in a centrifuge tube, and 20 mL of ethanol was added and precipitated. The supernatant is discarded through centrifugation, 2 mL of chloroform is added to the precipitate to disperse the quantum dots, 0.50 g of (2-butoxy-ethoxy) -acetic acid is added, and the mixture is heated to 60 ° C. in a nitrogen atmosphere. The reaction was continued for 1 hour.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, followed by centrifugation to separate the precipitate, and then 4 mL of propylene glycol monomethyl ether acetate was added and heated to 80 ° C. However, it was dispersed. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 526 nm.

Synthesis Example 4: Synthesis of green quantum dots (Q-4)
5 mL of the quantum dot solution dispersed in chloroform synthesized in Synthesis Example 3 was placed in a centrifuge tube, and 20 mL of ethanol was added to cause precipitation. The supernatant is discarded through centrifugation, and 2 mL of chloroform is added to the precipitate to disperse the quantum dots, and then 0.5 g of O- (succinyl) -O′-methyl polyethylene glycol 2′000 (Aldrich) is added. The mixture was reacted for 1 hour while heating to 60 ° C. in a nitrogen atmosphere.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, and then centrifugation was performed to separate the precipitate. Then, 4 mL of propylene glycol monomethyl ether acetate was added and the mixture was heated to 80 ° C. It was dispersed while heating. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 525 nm.

Synthesis Example 5: Synthesis of green quantum dots (Q-5)
Indium acetate 0.4 mmol (0.058 g), palmitic acid 0.6 mmol (0.15 g) and 1-octadecene 20 mL were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen. After heating to 280 ° C., a mixed solution of tris (trimethylsilyl) phosphine (TMS ₃ P) 0.2 mmol (58 μL) and trioctylphosphine 1.0 mL was rapidly injected and allowed to react for 1.5 minutes.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, followed by 4.8 mmol of selenium (Se / TOP) in trioctylphosphine, and the final mixture was allowed to react for 2 hours. Ethanol was added to the reaction solution rapidly cooled to room temperature, and the precipitate obtained by centrifugation was vacuum filtered and then dried under reduced pressure to form an InP / ZnSe core-shell.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of sulfur (S / TOP) in trioctylphosphine was added, and the final mixture was reacted for 2 hours. Ethanol is added to the reaction solution that has been rapidly cooled to room temperature, and the precipitate obtained by centrifugation is filtered under reduced pressure and then dried under reduced pressure to obtain InP / ZnSe / ZnS core-shell structure quantum dots, which are then dispersed in chloroform. I let you.

  The maximum emission peak of the emission spectrum of the obtained nano quantum dots was 526 nm, and 5 mL of the quantum dot solution was put in a centrifuge tube, and 20 mL of ethanol was added and precipitated. The supernatant is discarded through centrifugation, and 2 mL of chloroform is added to the precipitate to disperse the quantum dots, and then 0.65 g of carboxy-EG6-undecanethiol (Aldrich) is added and heated to 60 ° C. in a nitrogen atmosphere. However, the reaction was allowed to proceed for 1 hour.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, and then centrifugation was performed to separate the precipitate. Then, 4 mL of propylene glycol monomethyl ether acetate was added and the mixture was heated to 80 ° C. It was dispersed while heating. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 536 nm.

Synthesis Example 6: Synthesis of green quantum dots (Q-6)
5 mL of the quantum dot solution dispersed in chloroform synthesized in Synthesis Example 5 was placed in a centrifuge tube, and 20 mL of ethanol was added to cause precipitation. The supernatant is discarded through centrifugation, and 2 mL of chloroform is added to the precipitate to disperse the quantum dots, and then 0.5 g of O- (succinyl) -O′-methyl polyethylene glycol 2′000 (Aldrich) is added. The mixture was reacted for 1 hour while heating to 60 ° C. in a nitrogen atmosphere.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, and then centrifugation was performed to separate the precipitate. Then, 4 mL of propylene glycol monomethyl ether acetate was added and the mixture was heated to 80 ° C. It was dispersed while heating. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 534 nm.

Synthesis Example 7: Synthesis of red quantum dots (Q-7)
Indium acetate 0.4 mmol (0.058 g), palmitic acid 0.6 mmol (0.15 g) and 1-octadecene 20 mL were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen. After heating to 280 ° C., a mixed solution of tris (trimethylsilyl) phosphine (TMS ₃ P) 0.2 mmol (58 μL) and trioctylphosphine 1.0 mL was rapidly injected, and after 5 minutes of reaction, the reaction solution was quickly brought to room temperature. Cooled to. The absorption maximum wavelength was 560 to 590 nm.

  Zinc acetate 2.4 mmol (0.448 g), oleic acid 4.8 mmol and trioctylamine 20 mL were charged to the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of selenium (Se / TOP) in trioctylphosphine was added. After the final mixture was reacted for 2 hours, the temperature was lowered to room temperature, and the InP / ZnSe core was added. -A shell was formed.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of sulfur (S / TOP) in trioctylphosphine was added, and the final mixture was reacted for 2 hours. Ethanol is added to the reaction solution that has been rapidly cooled to room temperature, and the precipitate obtained by centrifugation is filtered under reduced pressure and then dried under reduced pressure to obtain InP / ZnSe / ZnS core-shell structure quantum dots, which are then dispersed in chloroform. I let you.

  The maximum emission peak of the emission spectrum of the obtained nano quantum dots was 628 nm, and 5 mL of the synthesized quantum dot solution was put in a centrifuge tube, and 20 mL of ethanol was added to precipitate. After discarding the supernatant through centrifugation, 2 mL of chloroform was added to the precipitate to disperse the quantum dots, and then 0.65 g of 2- [2- (2-methoxyethoxy) ethoxy] acetic acid (WAKO) was added. The reaction was carried out for 1 hour while heating to 60 ° C. in a nitrogen atmosphere.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, followed by centrifugation, discarding the supernatant, separating the precipitate, and then adding 4 mL of propylene glycol monomethyl ether acetate. Then, it was dispersed while heating to 80 ° C. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 628 nm.

Synthesis Example 8: Synthesis of red quantum dots (Q-8)
Indium acetate 0.4 mmol (0.058 g), palmitic acid 0.6 mmol (0.15 g) and 1-octadecene 20 mL were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen. After heating to 280 ° C., a mixed solution of tris (trimethylsilyl) phosphine (TMS ₃ P) 0.2 mmol (58 μL) and trioctylphosphine 1.0 mL was rapidly injected, and after reacting for 4.5 minutes, the reaction solution was cooled to room temperature. Cooled quickly. The absorption maximum wavelength was 550 to 585 nm.

  Zinc acetate 2.4 mmol (0.448 g), oleic acid 4.8 mmol and trioctylamine 20 mL were charged to the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of selenium (Se / TOP) in trioctylphosphine was added. After the final mixture was reacted for 2 hours, the temperature was lowered to room temperature, and the InP / ZnSe core was added. -A shell was formed.

  Next, 2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in the reactor and heated to 120 ° C. under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen, and the temperature of the reactor was raised to 280 ° C. 2 mL of the previously synthesized InP core solution was added, and then 4.8 mmol of sulfur (S / TOP) in trioctylphosphine was added, and the final mixture was reacted for 2 hours. Ethanol is added to the reaction solution that has been rapidly cooled to room temperature, and the precipitate obtained by centrifugation is filtered under reduced pressure and then dried under reduced pressure to obtain InP / ZnSe / ZnS core-shell structure quantum dots, which are then dispersed in chloroform. I let you.

  The maximum emission peak of the emission spectrum of the obtained nano quantum dots was 616 nm, and 5 mL of the synthesized quantum dot solution was put in a centrifuge tube, and 20 mL of ethanol was added and precipitated. After discarding the supernatant through centrifugation, 2 mL of chloroform was added to the precipitate to disperse the quantum dots, and then 0.65 g of 2- [2- (2-methoxyethoxy) ethoxy] acetic acid (WAKO) was added. The reaction was carried out for 1 hour while heating to 60 ° C. in a nitrogen atmosphere.

  Next, 25 mL of n-hexane was added to the reaction product to precipitate the quantum dots, followed by centrifugation, discarding the supernatant, separating the precipitate, and then adding 4 mL of propylene glycol monomethyl ether acetate. And dispersed while heating to 80 ° C. The solid content was adjusted to 25% with PGMEA. The maximum emission wavelength was 616 nm.

Synthesis Example 9: Binder resin (E-1) containing cardo binder resin
(1) 138 g of 9,9′-bis (4-glycidyloxyphenyl) fluorene (Hear Chem), which is a bisphenol epoxy compound, 54 g of acrylic acid, 1.4 g of benzyltriethylammonium chloride (Ooi Kagaku), 1 g of triphenylphosphine (Aldrich), 128 g of propylglycol methylethyl acetate (Daicel Chemical) and 0.5 g of hydroquinone, heated to 120 ° C., maintained for 12 hours, and represented by the following chemical formula 11 Was synthesized.

(2) 60 g of the compound represented by the following chemical formula 11 in the reactor, 11 g of biphenyltetracarboxylic dianhydride (Mitsubishi Gas), 3 g of tetrahydrophthalic anhydride (Aldrich), propyl glycol methyl ethyl acetate (Daicel Chemical) 20 g and 0.1 g of N, N′-tetramethylammonium chloride were added, and the temperature was raised to 120 ° C. and maintained for 2 hours to synthesize a compound represented by the following chemical formula 12. The weight average molecular weight of the obtained compound represented by the following chemical formula 12 was 5,400 g / mol. The acid value was 95 mgKOH / g.

[Chemical formula 11]

[Chemical formula 12]

Synthesis Example 10: Binder resin including cardo binder resin (E-2)
(1) In order to synthesize the compound of the following chemical formula 13, 364.4 g of 4,4 ″-(9H-xanthene-9,9-diyl) diphenol and t-butylammonium bromide 4159 g was mixed, 2359 g of epichlorohydrin was added, and the mixture was reacted by heating to 90 ° C. When analyzed by liquid chromatography, 4,4 ″-(9H-xanthene-9,9-diyl) diphenol was Upon complete consumption, it was cooled to 30 ° C. and 50% aqueous NaOH (3 eq) was added slowly. When the epichlorohydrin is completely consumed as analyzed by liquid chromatography, it is extracted with dichloromethane, washed three times with water, the organic layer is dried over magnesium sulfate, and the dichloromethane is distilled under reduced pressure. Was recrystallized using a 50:50 mixing ratio.

  After mixing 1 equivalent of the epoxy compound thus synthesized with 0.004 equivalent of t-butylammonium bromide, 0.001 equivalent of 2,6-diisobutylphenol and 2.2 equivalent of acrylic acid, the solvent propylene glycol monomethyl ether acetate 24 .89 g was added and mixed. While air was blown into the reaction solution at 25 ml / min, the temperature was dissolved at 95 ° C. by heating. With the reaction solution clouded, the temperature was heated to 120 ° C. to completely dissolve the reaction solution. When the solution became clear and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mg KOH / g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound.

[Chemical formula 13]

(2) After adding and dissolving 600 g of propylene glycol monomethyl ether acetate in 307.0 g of the compound of Chemical Formula 13, 78 g of biphenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide are mixed and gradually heated. , Reacted at 110 ° C. for 4 hours. After confirming disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed, reacted at 90 ° C. for 6 hours, and polymerized with a cardo binder resin. The disappearance of the anhydride was confirmed by IR spectrum. The acid value was 120 mgKOH / g.

Synthesis Example 11: Binder resin including cardo binder resin (E-3)
(1) After a reflux condenser and a thermometer were installed in a three-necked flask, 42.5 g of 9,9-bisphenolfluorene was added, and 220 mL of 2- (chloromethyl) oxirane was quantified and injected. After adding 100 mg of tetrabutylammonium bromide, the temperature was raised to 90 ° C. while stirring was started. After confirming that the content of unreacted material was less than 0.3%, distillation was performed under reduced pressure.

After the temperature was lowered to 30 ° C., dichloromethane was injected and NaOH was gradually added. After confirming that the product was 96% or more by a high performance liquid chromatography (HPLC) method, 5% HCl was added dropwise to terminate the reaction. The reaction product was extracted and separated into layers, and then the organic layer was washed with water to neutrality. The organic layer was dried over MgSO ₄ and concentrated by distillation under reduced pressure on a rotary evaporator. Dichloromethane was added to the concentrated product, and methanol was added while stirring while raising the temperature to 40 ° C., and then the solution temperature was reduced and stirring was performed. The produced solid was filtered and then vacuum dried at room temperature to obtain 52.7 g of white solid powder (yield 94%). The structure for this was confirmed by ¹ H NMR.

[Reaction Formula 1]

¹ H NMR in CDCl3: 7.75 (2H), 7.35-7.254 (6H), 7.08 (4H), 6.74 (4H), 4.13 (2H), 3.89 (2H) ), 3.30 (2H), 2.87 (2H), 2.71 (2H).

(2) Synthesis of 3,3 ′-(((9H-fluorene-9,9-diyl) bis (4,1-phenylene)) bis (oxy)) bis (1-phenylthio) propan-2-ol) After a reflux condenser and a thermometer were installed in the flask, a one-step reaction product (1000 g), 524 g of thiophenol, and 617 g of ethanol were added and stirred. To the reaction solution, 328 g of triethylamine was slowly added dropwise. The reaction was terminated after confirming the disappearance of the starting material by high performance liquid chromatography (HPLC). After completion of the reaction, ethanol was removed by distillation under reduced pressure. The organic material was dissolved in dichloromethane and washed with water, and then dichloromethane was removed through vacuum distillation. The concentrated organic substance was dissolved in ethyl acetate, ether solvent was added dropwise, and the mixture was stirred for 30 minutes. The compound was distilled under reduced pressure to obtain 945 g (64% yield) of a pale yellow oil whose structure was confirmed by ¹ H NMR.

[Reaction Formula 2]

^{1 H NMR in CDCl3: 7.82 (} 2H), 7.38-6.72 (20H), 6.51 (4H), 4.00 (2H), 3.97 (2H), 3.89 (2H ), 3.20 (2H), 3.01 (2H), 2.64 (2H).

(3) Synthesis of binder resin A reflux condenser and a thermometer were installed in a three-necked flask, and then synthesized in two stages dissolved in 50% PGMEA solvent. 3,3 ′-((((9H-fluorene-9,9- 200 g of diyl) bis (4,1-phenylene)) bis (oxy)) bis (1-phenylthio) propan-2-ol) monomer was added and the temperature was raised to 115 ° C. After 31.1 g of 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride was added dropwise at 115 ° C., the mixture was stirred for 6 hours while maintaining 115 ° C. After adding 7.35 g of phthalic anhydride and further stirring for 2 hours, the reaction was completed. After cooling, a binder resin having a weight average molecular weight of 3,500 g / mol was obtained. The acid value was 150 mgKOH / g.

Synthesis Example 12: Binder resin (E-4) containing an epoxy-containing acrylic binder resin
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2′-azobisisobutyronitrile, 18 g of acrylic acid , 37.9 g of p-vinyltoluene, 10 g of methyl methacrylate, 34.1 g of glycidyl methacrylate, and 3 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 140 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 13,110.

Synthesis Example 13: Binder resin containing epoxy-containing acrylic binder resin (E-5)
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2′-azobisisobutyronitrile, 15 g of acrylic acid Then, 15.0 g of p-vinyltoluene, 20 g of methyl methacrylate, 50.0 g of glycidyl methacrylate, and 3 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 115 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 13,110.

Synthesis Example 14: Binder resin including epoxy-containing acrylic binder resin (E-6)
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2′-azobisisobutyronitrile, 16 g of acrylic acid Then, 14.0 g of p-vinyltoluene, 20 g of methyl methacrylate, 50.0 g of 7-oxabicyclo [4.1.0] heptan-3-ylmethyl acrylate, and 3 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 125 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 11,110.

Synthesis Example 15: Binder resin including epoxy-containing acrylic binder resin (E-7)
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 3.5 g of 2,2′-azobisisobutyronitrile, acrylic 16 g of acid, 14.0 g of p-vinyltoluene, 20 g of methyl methacrylate, 20.0 g of glycidyl methacrylate, 20.0 g of 7-oxabicyclo [4.1.0] heptan-3-ylmethyl acrylate, 3 g of n-dodecyl mercaptan Was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 98 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 8,090.

Synthesis Example 16: Synthesis of binder resin (E-8) containing epoxy-containing acrylic binder resin 120 g of propylene glycol monomethyl ether acetate in a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, propylene 80 g of glycol monomethyl ether, 1.2 g of 2,2′-azobisisobutyronitrile, 16 g of acrylic acid, 14.0 g of p-vinyltoluene, 20 g of methyl methacrylate, 3-vinyl-7-oxa-bicyclo [4.1 .0] 50.0 g of heptane and 1.5 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 98 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 18,090.

Synthesis Example 17: Binder resin (E-9)
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2′-azobisisobutyronitrile, 5 g of acrylic acid , 35.0 g of benzyl methacrylate, 60 g of methyl methacrylate, and 3 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 40 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 12,370.

Synthesis Example 18: Binder resin (E-10)
In a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet tube, 120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2′-azobisisobutyronitrile, 20 g of acrylic acid Then, 30.0 g of benzyl methacrylate, 50 g of methyl methacrylate, and 3 g of n-dodecyl mercaptan were added, and the atmosphere was replaced with nitrogen.

  Thereafter, while stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The acid value of the solid content of the binder resin thus synthesized was 160 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 11,874.

Production of light converting resin composition: Examples 1 to 24 and Comparative Examples 1 to 7
The light conversion resin composition by an Example and a comparative example was manufactured using the component and content (weight%) of the following Table 1-3.

Experimental Example A light conversion coating layer was produced as follows using the light conversion resin compositions produced in the above Examples and Comparative Examples, and the brightness, light retention rate, color reproducibility, heat resistance and coating film at this time The hardness was measured by the following method, and the evaluation results are shown in Table 4 below.

(1) Production of Light Conversion Coating Layer A coating film was produced using the light conversion resin compositions produced in Examples and Comparative Examples. That is, each of the light conversion resin compositions is applied onto a 5 cm × 5 cm glass substrate by a spin coating method, then placed on a heating plate, and maintained at a temperature of 100 ° C. for 10 minutes to form a thin film. Then, it was heated in a heating oven at 180 ° C. for 30 minutes to produce a light conversion coating layer. The light conversion resin film manufactured as described above was manufactured to a thickness of 10 μm depending on the content of quantum dots.

(2) Luminance evaluation After the coating film produced in (1) above was positioned on top of a blue light source (XLamp XR-E LED, Royal blue 450, manufactured by Cree), a luminance measuring machine (CAS140CT Spectrometer, Instrument) The luminance was measured using a system), and the evaluation results are shown in Table 4 below.

(3) Light retention rate The coating substrate manufactured by the method for producing a light conversion coating layer is hard baked (Hard bake) at 230 ° C. for 60 minutes, and the luminous efficiency before hard baking and the luminous efficiency after hard baking are performed. Was measured, the level at which the luminous efficiency was maintained was confirmed, and the evaluation results are shown in Table 4 below.

(4) Evaluation of heat resistance After forming the coating film in (1), the change in thickness due to thermal shock was confirmed by the following formula 1. Specifically, when heat at 230 ° C. was applied to the final completed coating film for 1 hour, the thickness before / after heat was measured, and the rate of change was calculated according to Equation 1 below. At this time, when the rate of change in thickness was 90% or more, it was good (◯), and when it was less than 90%, it was defective (x), and the evaluation results are shown in Table 4 below.

[Formula 1]
Shrinkage ratio of coating film = {(film thickness after heat treatment) / (film thickness before heat treatment)} × 100 (%)

(5) Film hardness The degree of cure of the coating film produced in (1) above was measured at a high temperature of 150 ° C. using a hardness meter (HM500; Fischer product), and the surface hardness was based on the following criteria: And evaluated. The results are shown in Table 4 below.

<Evaluation criteria>
○: Surface hardness 50 or more Δ: Surface hardness 30 or more and less than 50 ×: Surface hardness 30 or less

(6) Color reproducibility The coating film produced in (1) above is placed on top of a blue light source (XLamp XR-E LED, Royal blue 450, manufactured by Cree), on which red, green plate, and blue are After positioning the patterned color filter substrate (UN65, using TV Color filter manufactured by Samsung Electronics Co., Ltd.), using a chromaticity meter (OSP-200, manufactured by Olympus), red, green plate, blue The color coordinates were measured, and the color reproduction area expressed at this time was calculated as an NTSC color area contrast area ratio. The evaluation results are shown in Table 4 below.

  Referring to Table 4, in the case of an example including a cardo binder resin and an epoxy-containing acrylic binder resin according to the present invention, the performance of the coating film hardness and heat resistance, which is much superior to that of the comparative example, was observed. From the result, it can be seen that it is possible to greatly reduce the tearing failure of the deposited film generated in the heat treatment process introduced at the time of manufacturing the display.

Further, two or more quantum dots characterized in that the difference in emission center wavelength of the quantum dots of the examples according to the present invention is 50 nm or more, the green emission wavelength is 510 nm to 540 nm, and the red emission center wavelength is 610 nm to 630 nm. It was possible to confirm that the color reproducibility was very excellent when applying, but when using one kind of quantum dot and when applying a quantum dot whose emission center wavelength difference is less than 50 nm. It can be confirmed that it is difficult to apply to the light source of the color filter due to lack of color reproducibility performance. In addition, it can be confirmed that the brightness and the light maintenance rate are exceptionally superior to those of the comparative examples as the strength of the coating film is strengthened.

Claims (13)

Two or more kinds of quantum dots having emission center wavelengths different from each other by 50 nm or more;
A binder resin; and
The binder resin includes a cardo binder resin and an epoxy-containing acrylic binder resin,
The quantum dot includes a polyethylene glycol-based ligand disposed on a surface,
The polyethylene glycol-based ligand contains a compound represented by the following chemical formula 1-A:
[Chemical Formula 1-A]
(In Formula 1-A,
R ′ is represented by Formula 1-1,
[Chemical Formula 1-1]
In Formula 1-1,
R1 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
R2 is represented by Formula 1-2,
[Chemical formula 1-2]
In Formula 1-2,
A is an oxygen atom or a sulfur atom,
R3 is a direct linking group or an alkylene group having 1 to 10 carbon atoms,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
k is an integer of 1 to 100,
l is an integer from 0 to 1;
m is an integer of 0 to 10). The light conversion resin composition according to claim 1, wherein the compound represented by the chemical formula 1-A is represented by the following chemical formula 1-3:
[Chemical formula 1-3]
(In Formula 1-3,
A linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms,
o is an integer from 0 to 5,
p is an integer of 0 to 1,
q is an integer of 1 to 50).   The light conversion resin composition according to claim 1, wherein the quantum dots are non-cadmium quantum dots. The quantum dots are
Binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; A ternary compound selected from the group consisting of AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNSs, GaInPA , GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof A core comprising one or more materials selected from the group consisting of classical element compound selected;
The light conversion resin composition according to claim 1, comprising: a shell containing one or more substances selected from ZnSe, ZnS, and ZnTe.   The light conversion resin composition according to claim 1, wherein the quantum dots include two or more types of quantum dots having emission center wavelengths different from each other by 70 nm or more.   The quantum dot includes two or more selected from the group consisting of a green quantum dot having an emission center wavelength range of 510 nm to 540 nm and a red quantum dot having an emission center wavelength range of 610 nm to 630 nm. The light conversion resin composition according to claim 5.   The polyethylene glycol-based ligand is 2- (2-methoxyethoxy) acetic acid, 2- [2- (2-methoxyethoxy) ethoxy] acetic acid, succinic acid mono- [2- (2-methoxy-ethoxy) -ethyl] ester , Malonic acid mono- [2- (2-methoxy-ethoxy) -ethyl] ester, pentandionic acid mono- {2- [2- (2-ethoxy-ethoxy) -ethoxy] -ethyl} ester, {2- [ 2- (2-ethyl-hexyloxy) -ethoxy] -ethoxy} -acetic acid, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- (2-ethoxy-ethoxy) ) -Ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- ( 2- {2- [ -(2-methoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, malonic acid mono- [2- (2- {2- [2- (2- {2- [2- (2-isobutoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, hexanedioic acid mono- [2- (2- {2- [2- (2-methoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, 2-oxo-hexanedioic acid 6- (2- {2- [2 -(2-Ethoxy-ethoxy) -ethoxy] -ethoxy} -ethyl) ester, succinic acid mono- [2- (2- {2- [2- (2- {2- [2- (2- {2- [2- (2- { -[2- (2- {2- [2- (2-methoxy-ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethoxy] -Ethoxy} -ethoxy) -ethoxy] -ethoxy} -ethoxy) -ethyl] ester, (2-butoxy-ethoxy) -acetic acid, carboxy-EG6-undecanthiol and (2-carboxymethoxy-ethoxy) -acetic acid The light conversion resin composition according to claim 1, comprising at least one selected from the group consisting of: 2. The light conversion resin composition according to claim 1, wherein the epoxy-containing acrylic binder resin includes at least one repeating unit of the following chemical formulas 2 to 4.
[Chemical formula 2]
[Chemical formula 3]
[Chemical formula 4]
(In the above chemical formulas 2-4,
R4, R5 and R6 are each independently hydrogen or a methyl group). The light conversion resin composition according to claim 1, wherein the cardo binder resin includes at least one repeating unit of the following chemical formulas 5 to 10.
[Chemical formula 5]
[Chemical formula 6]
[Chemical formula 7]
[Chemical formula 8]
(In the above chemical formulas 5-8,
X and X ′ are each independently a single bond, —CO—, —SO ₂ —, —C (CF ₃ ) ₂ —, —Si (CH ₃ ) ₂ —, —CH ₂ —, —C ( _{CH 3) 2 -, - O-} ,
Y is an acid anhydride residue;
Z is an acid dianhydride residue;
R7, R7 ', R8, R8', R9, R9 ', R10, R10', R11, R11 ', R12 and R12' are each independently a hydrogen atom or a methyl group;
R13, R13 ′, R14 and R14 ′ are each independently a linear alkylene group having 1 to 6 carbon atoms or a branched alkylene group having 3 to 6 carbon atoms, wherein the alkylene group is an ester bond, Interrupted by at least one of a cycloalkylene group having 6 to 14 carbon atoms and an arylene group having 6 to 14 carbon atoms;
R15, R15 ′, R16, R16 ′, R17, R17 ′, R18 and R18 ′ each independently represents a hydrogen atom, a halogen atom, a straight-chain alkyl group having 1 to 6 carbon atoms or a 3 to 6 carbon atoms. A branched alkyl group,
r and s are integers satisfying 0 ≦ m ≦ 30 and 0 ≦ n ≦ 30,
However, r and s are not 0 at the same time. )
[Chemical formula 9]
[Chemical formula 10]
(In the above chemical formulas 9 and 10,
Each P is independently
R19 and R20 are each independently hydrogen, hydroxy group, thiol group, amino group, nitro group or halogen atom,
Ar1 is each independently a C6-C15 aryl group,
Y ′ is an acid anhydride residue;
Z ′ is an acid dianhydride residue;
A ′ is O, S, N, Si or Se,
a and b are each independently an integer of 1 to 6,
c and d are each independently an integer of 0 to 30;
However, c and d are not 0 at the same time. )   The light conversion resin composition according to claim 1, wherein the light conversion resin composition further comprises one or more selected from the group consisting of scattering particles, thermosetting compounds, curing accelerators, additives, and solvents. object.   The light conversion laminated base material containing the hardened | cured material of the light conversion resin composition in any one of Claims 1-10.   The light conversion laminated base material according to claim 11, wherein a material of the light conversion laminated base material is glass. The image display apparatus containing the light conversion laminated base material of Claim 11.