KR20180006335A - Novel compound and color conversion film comprising the same - Google Patents

Abstract

The present invention relates to a compound which is represented by chemical formula 1. The present invention further relates to a color-variable film including the same, a backlight unit, and a display device. According to the present invention, the compound shows high fluorescent efficiency and is stable in water or oxygen.

Description

TECHNICAL FIELD [0001] The present invention relates to a novel compound, and a color conversion film containing the same. BACKGROUND OF THE INVENTION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel compound, a color conversion film comprising the same, a backlight unit and a display device.

Conventional light emitting diodes (LEDs) are obtained by mixing a green phosphor and a red phosphor in a blue light emitting diode or by mixing a yellow phosphor and a blue-green phosphor in a UV light emitting diode. However, such a method is difficult to control the color and thus has poor color rendering properties. Therefore, the color reproduction rate drops.

Recently, attempts have been made to realize green and red colors by bonding quantum dots to a blue LED in order to overcome the decrease in the color reproducibility and reduce the production cost. However, cadmium-based quantum dots have safety problems, and other quantum dots are less efficient than cadmium-based ones. Further, the quantum dots have a disadvantage that their stability against oxygen and water is poor and their performance remarkably decreases when they are aggregated. Moreover, it is difficult to keep the size of the quantum dot constant during the production of the quantum dot, resulting in a high production cost.

Korean Patent Publication No. 2000-0011622

The present invention provides a novel compound, a color conversion film comprising the same, a backlight unit, and a display device.

According to one embodiment of the present invention, there is provided a compound represented by the following formula (1).

 [Chemical Formula 1]

In Formula 1,

X1, X2, X11 and X12 are the same or different from each other and each independently represents a halogen group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryloxy group; Or a substituted or unsubstituted aryl group,

R1 to R6 and R11 to R16 are the same or different from each other, and each independently hydrogen; A nitrile group; A substituted or unsubstituted ester group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group,

L1 and L3 are the same or different and each independently represents a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,

l1 and l3 are each an integer of 1 or more,

When l1 and l3 are two or more, the structures in parentheses of two or more are the same or different,

L2 is a substituted or unsubstituted arylene group; A substituted or unsubstituted heteroarylene group; Or any one of the following structural formulas,

In the above formula,

G1 to G5 are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group, or adjacent groups are bonded to each other to form a substituted or unsubstituted ring,

* Is a site to be bonded to the end of L1 or L3.

According to another embodiment of the present disclosure, a resin matrix; And a color conversion film containing the compound represented by the formula (1) dispersed in the resin matrix.

According to another embodiment of the present disclosure, there is provided a backlight unit including the color conversion film.

According to another embodiment of the present disclosure, there is provided a display device including the backlight unit.

The metal complex according to one embodiment of the present invention, that is, the compound represented by Formula 1 has high fluorescence efficiency, is stable to water or oxygen, and has a lower production cost than quantum dots. Therefore, by using the compound represented by the formula (1) described in the present specification as a fluorescent substance of a color conversion film, it is possible to provide a color conversion film having excellent brightness and color reproducibility, a simple manufacturing process and a low manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a color conversion film according to an embodiment of the present invention applied to a backlight; FIG.

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

The color conversion film according to one embodiment of the present invention provides the compound represented by Formula 1 above.

In this specification, when a part is referred to as "including " an element, it is to be understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In this specification, when a member is located on another member, it includes not only the case where the member is in contact with the other member but also the case where another member exists between the two members.

Examples of substituents in the present specification are described below, but are not limited thereto.

The term "substituted" means that the hydrogen atom bonded to the carbon atom of the compound is replaced with another substituent, and the substituted position is not limited as long as the substituent is a substitutable position, , Two or more substituents may be the same as or different from each other.

As used herein, the term " substituted or unsubstituted " A halogen group; A nitrile group; A nitro group; Imide; Amide group; Carbonyl group; An ester group; Ether group; A hydroxy group; A substituted or unsubstituted coumarin group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryloxy group; A substituted or unsubstituted alkylthio group; A substituted or unsubstituted arylthio group; A substituted or unsubstituted alkylsulfoxy group; A substituted or unsubstituted arylsulfoxy group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted silyl group; A substituted or unsubstituted boron group; A substituted or unsubstituted amine group; A substituted or unsubstituted arylphosphine group; A substituted or unsubstituted phosphine oxide group; A substituted or unsubstituted aryl group; And a substituted or unsubstituted heterocyclic group, or that at least two of the substituents exemplified above are substituted with a substituent to which they are linked, or have no substituent. For example, "a substituent to which at least two substituents are connected" may be a biphenyl group. That is, the biphenyl group may be an aryl group, and may be interpreted as a substituent in which two phenyl groups are connected.

는 다른 치환기 또는 결합부에 결합되는 부위를 의미한다.In the present specification,

Quot; refers to a moiety bonded to another substituent or bond.

In the present specification, the halogen group may be fluorine, chlorine, bromine or iodine.

In the present specification, the number of carbon atoms in the imide group is not particularly limited, but is preferably 1 to 30 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.

In the present specification, the amide group may be substituted with nitrogen of the amide group by hydrogen, a straight chain, branched chain or cyclic alkyl group of 1 to 30 carbon atoms or an aryl group of 6 to 30 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.

In the present specification, the carbon number of the carbonyl group is not particularly limited, but is preferably 1 to 30 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.

In the present specification, the ester group may be substituted with an ester group oxygen in a straight chain, branched chain or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 30 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.

In the present specification, the ether group may be substituted with a straight-chain, branched-chain or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 30 carbon atoms in the ether group. Specifically, it may be a compound of the following structural formula, but is not limited thereto.

In the present specification, the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30. Specific examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec- N-pentyl, 3-dimethylbutyl, 2-ethylbutyl, heptyl, n-hexyl, Cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethyl Heptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl and the like.

In the present specification, the cycloalkyl group is not particularly limited, but is preferably a group having 3 to 30 carbon atoms. Specific examples thereof include cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, But are not limited to, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, isobutyl, sec-butyl, It is not.

In the present specification, the alkoxy group may be linear, branched or cyclic. The number of carbon atoms of the alkoxy group is not particularly limited, but is preferably 1 to 30 carbon atoms. Specific examples include methoxy, ethoxy, n-propoxy, isopropoxy, i-propyloxy, n-butoxy, isobutoxy, tert-butoxy, sec-butoxy, n-pentyloxy, neopentyloxy, N-hexyloxy, n-hexyloxy, 3,3-dimethylbutyloxy, 2-ethylbutyloxy, n-octyloxy, n-nonyloxy, n-decyloxy, benzyloxy, But is not limited thereto.

In this specification, the amine group is -NH ₂ ; Monoalkylamine groups; A dialkylamine group; N-alkylarylamine groups; Monoarylamine groups; A diarylamine group; An N-arylheteroarylamine group; An N-alkylheteroarylamine group, a monoheteroarylamine group, and a diheteroarylamine group. The number of carbon atoms is not particularly limited, but is preferably 1 to 30. Specific examples of the amine group include methylamine, dimethylamine, ethylamine, diethylamine, phenylamine, naphthylamine, biphenylamine, anthracenylamine, 9-methyl- , Diphenylamine group, ditolylamine group, N-phenyltolylamine group, triphenylamine group, N-phenylbiphenylamine group; N-phenylnaphthylamine group; An N-biphenylnaphthylamine group; N-naphthylfluorenylamine group; N-phenylphenanthrenylamine group; An N-biphenyl phenanthrenyl amine group; N-phenylfluorenylamine group; An N-phenyltriphenylamine group; N-phenanthrenyl fluorenylamine group; And an N-biphenylfluorenylamine group, but are not limited thereto.

In the present specification, the N-alkylarylamine group means an amine group in which N of the amine group is substituted with an alkyl group and an aryl group.

In the present specification, the N-arylheteroarylamine group means an amine group in which N in the amine group is substituted with an aryl group and a heteroaryl group.

In the present specification, the N-alkylheteroarylamine group means an amine group in which N in the amine group is substituted with an alkyl group and a heteroarylamine group.

In the present specification, the alkyl group in the alkylamine group, the N-alkylarylamine group, the alkylthio group, the alkylsulfoxy group and the N-alkylheteroarylamine group is the same as the alkyl group described above. Specific examples of the alkyloxy group include a methylthio group, an ethylthio group, a tert-butylthio group, a hexylthio group and an octylthio group. Examples of the alkylsulfoxy group include a mesyl group, an ethylsulfoxy group, a propylsulfoxy group, And the like, but the present invention is not limited thereto.

In the present specification, the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 30. Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, Butenyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, (Diphenyl-1-yl) vinyl-1-yl, stilbenyl, stilenyl, and the like.

In the present specification, the silyl group specifically includes a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, However, the present invention is not limited thereto.

In the present specification, the boron group may be -BR ₁₀₀ R ₁₀₁ , wherein R ₁₀₀ and R ₁₀₁ are the same or different and each independently hydrogen; heavy hydrogen; halogen; A nitrile group; A substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; A substituted or unsubstituted, straight or branched chain alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; And a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms.

In the present specification, the phosphine oxide group specifically includes a diphenylphosphine oxide group, dinaphthylphosphine oxide, and the like, but is not limited thereto.

In the present specification, the aryl group is not particularly limited, but preferably has 6 to 30 carbon atoms, and the aryl group may be monocyclic or polycyclic.

When the aryl group is a monocyclic aryl group, the number of carbon atoms is not particularly limited, but is preferably 6 to 30 carbon atoms. Specific examples of the monocyclic aryl group include a phenyl group, a biphenyl group, a terphenyl group, and the like, but are not limited thereto.

When the aryl group is a polycyclic aryl group, the number of carbon atoms is not particularly limited. And preferably 10 to 30 carbon atoms. Specific examples of the polycyclic aryl group include, but are not limited to, a naphthyl group, an anthracenyl group, a phenanthryl group, a triphenyl group, a pyrenyl group, a perylenyl group, a klycenyl group and a fluorenyl group.

In the present specification, the fluorenyl group may be substituted, and adjacent groups may combine with each other to form a ring.

,

,

및

등이 될 수 있다. 다만, 이에 한정되는 것은 아니다.When the fluorenyl group is substituted,

,

,

And

And the like. However, the present invention is not limited thereto.

But also the case where a member exists.

As used herein, the term "adjacent" means that the substituent is a substituent substituted on an atom directly connected to the substituted atom, a substituent stereostructically closest to the substituent, or another substituent substituted on the substituted atom . For example, two substituents substituted in the benzene ring to the ortho position and two substituents substituted on the same carbon in the aliphatic ring may be interpreted as "adjacent" groups to each other.

In the present specification, the aryl group in the aryloxy group, the arylthioxy group, the arylsulfoxy group, the N-arylalkylamine group, the N-arylheteroarylamine group, and the arylphosphine group is the same as the aforementioned aryl group. Specific examples of the aryloxy group include a phenoxy group, a p-tolyloxy group, a m-tolyloxy group, a 3,5-dimethyl-phenoxy group, a 2,4,6- trimethylphenoxy group, a p- Naphthyloxy group, 4-methyl-1-naphthyloxy group, 5-methyl-2-naphthyloxy group, 1-anthryloxy group , 2-anthryloxy group, 9-anthryloxy group, 1-phenanthryloxy group, 3-phenanthryloxy group and 9-phenanthryloxy group and the arylthioxy group includes phenylthio group, 2- Methylphenylthio group, 4-tert-butylphenylthio group and the like, and examples of the arylsulfoxy group include a benzene sulfoxide group and a p-toluenesulfoxy group. However, the present invention is not limited thereto.

In the present specification, examples of the arylamine group include a substituted or unsubstituted monoarylamine group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted triarylamine group. The aryl group in the arylamine group may be a monocyclic aryl group or a polycyclic aryl group. The arylamine group having at least two aryl groups may contain a monocyclic aryl group, a polycyclic aryl group, or a monocyclic aryl group and a polycyclic aryl group at the same time. For example, the aryl group in the arylamine group may be selected from the examples of the aryl group described above.

In the present specification, the heteroaryl group includes at least one non-carbon atom and at least one hetero atom. Specifically, the hetero atom may include one or more atoms selected from the group consisting of O, N, Se and S, and the like. The number of carbon atoms is not particularly limited, but is preferably 2 to 30 carbon atoms, and the heteroaryl group may be monocyclic or polycyclic. Examples of the heterocyclic group include a thiophene group, a furanyl group, a pyrrolyl group, an imidazolyl group, a thiazolyl group, an oxazolyl group, an oxadiazolyl group, a pyridyl group, a bipyridyl group, a pyrimidyl group, A substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic group, , An isoquinolinyl group, an indolyl group, a carbazolyl group, a benzoxazolyl group, a benzimidazolyl group, a benzothiazolyl group, a benzocarbazolyl group, a benzothiophene group, a dibenzothiophene group, a benzofuranyl group, But are not limited to, phenanthroline, thiazolyl, isoxazolyl, oxadiazolyl, thiadiazolyl, benzothiazolyl, phenothiazyl and dibenzofuranyl groups.

In the present specification, examples of the heteroarylamine group include a substituted or unsubstituted monoheteroarylamine group, a substituted or unsubstituted diheteroarylamine group, or a substituted or unsubstituted triheteroarylamine group. The heteroarylamine group having two or more heteroaryl groups may include a monocyclic heteroaryl group, a polycyclic heteroaryl group, or a monocyclic heteroaryl group and a polycyclic heteroaryl group at the same time. For example, the heteroaryl group in the heteroarylamine group may be selected from the examples of the above-mentioned heteroaryl group.

In the present specification, examples of the heteroaryl group in the N-arylheteroarylamine group and the N-alkylheteroarylamine group are the same as the examples of the above-mentioned heteroaryl group.

In the present specification, in the substituted or unsubstituted ring formed by bonding adjacent groups to each other, the "ring" means a substituted or unsubstituted hydrocarbon ring; Or a substituted or unsubstituted heterocycle.

In the present specification, the hydrocarbon ring may be an aromatic, aliphatic or aromatic and aliphatic condensed ring, and may be selected from the examples of the cycloalkyl group or the aryl group except the univalent hydrocarbon ring.

In this specification, the aromatic ring may be monocyclic or polycyclic and may be selected from the examples of the aryl group except that it is not monovalent.

In the present specification, the hetero ring includes one or more non-carbon atoms and hetero atoms. Specifically, the hetero atom may include one or more atoms selected from the group consisting of O, N, Se, and S, and the like. The heterocyclic ring may be monocyclic or polycyclic, and may be aromatic, aliphatic or aromatic and aliphatic condensed rings, and may be selected from the examples of the heteroaryl group except that it is not monovalent.

In the present specification, an arylene group means a divalent group having two bonding positions in an aryl group. The description of the aryl group described above can be applied except that each of these is 2 groups.

In the present specification, the heteroarylene group means that the heteroaryl group has two bonding positions, that is, divalent. The description of the above-mentioned heteroaryl groups can be applied, except that they are each 2 groups.

According to one embodiment of the present invention, in Formula 1, L2 is a substituted or unsubstituted three or more ring arylene group; A substituted or unsubstituted tricyclic heteroarylene group; Or any one of the following structural formulas,

In the above formula,

The definitions of G1 to G5 and * are as described above.

According to one embodiment of the present invention, in Formula 1, L2 is selected from the following formulas.

In the above formula,

The definitions of G1 to G5 and * are as described above,

Y1 is NG8, CG9G10, O, or S,

R8 to G10, G17, g18, R101 and R102 are the same or different and independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group, or adjacent groups are bonded to each other to form a substituted or unsubstituted ring,

r101 and r102 are each an integer of 1 to 3,

g17 and g18 are each an integer of 1 to 7,

When r101, r102, g17, and g18 are two or more, the structures in parentheses of two or more are the same or different.

According to one embodiment of the present invention, in Formula 1, L2 is selected from the following formulas.

In the above formula,

G1 to G20 are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group, or adjacent groups are bonded to each other to form a substituted or unsubstituted ring,

g6, g7 and g11 to g16 are each an integer of 1 to 3,

g17 and g18 are each an integer of 1 to 7,

g19 is an integer of 1 to 8,

g20 is an integer of 1 to 6,

When g6, g7 and g11 to g20 are each 2 or more, the structures in parentheses of 2 or more are the same or different,

* Is a site to be bonded to the end of L1 or L3.

According to one embodiment of the present invention, the formula (1) is represented by any one of the following formulas (1-1) to (1-12).

[Formula 1-1]

[Formula 1-2]

[Formula 1-3]

[Formula 1-4]

[Formula 1-5]

[Chemical Formula 1-6]

[Chemical Formula 1-7]

[Chemical Formula 1-8]

[Chemical Formula 1-9]

[Chemical Formula 1-10]

[Formula 1-11]

[Formula 1-12]

In Formulas 1-1 to 1-12,

The definition of X1, X2, X11, X12, R1 to R16, L1, L3, l1, l3, G1 to G20, g6, g7 and g11 to g20 is as described above.

According to one embodiment of the present invention, in Formula 1, X1, X2, X11, and X12 are the same or different from each other, and each independently represents a halogen group.

According to one embodiment of the present invention, in Formula 1, X1, X2, X11, and X12 are the same or different from each other and are each independently fluorine.

According to one embodiment of the present invention, in Formula 1, R 1 to R 16 are the same or different from each other, and each independently hydrogen; A nitrile group; An ester group substituted with an alkyl group; An aryl group substituted or unsubstituted with a halogen group, a nitrile group, an alkyl group, a haloalkyl group, an alkyl ester group, a silyl group or an alkoxy group; Or a heteroaryl group.

According to one embodiment of the present invention, in Formula 1, R 1 to R 16 are the same or different from each other, and each independently hydrogen; A nitrile group; 2-methylpropyl ester group; A methyl group, an ethyl group, a 2-methylpropyl ester group, a methoxy group, an ethoxy group, an isopropyloxy group, a 2-methylpropyloxy group, an n-hexyloxy group, A silyloxy group, a triisopropylsilyl group, or an aryl group substituted or unsubstituted with a trimethylsilyl group; Or a heteroaryl group.

 According to one embodiment of the present invention, in Formula 1, R 1 to R 16 are the same or different from each other, and each independently hydrogen; A nitrile group; 2-methylpropyl ester group; A methyl group, an ethyl group, a 2-methylpropyl ester group, a methoxy group, an ethoxy group, an isopropyloxy group, a 2-methylpropyloxy group, an n-hexyloxy group, A silyloxy group, a triisopropylsilyl group, or a phenyl group substituted or unsubstituted with a trimethylsilyl group; Or a dibenzofuranyl group.

According to an embodiment of the present invention, in the above formula (1), l 1 and l 3 are each 1 or 2.

According to one embodiment of the present invention, in Formula 1, L 1 and L 3 are the same or different and are each independently a direct bond; Or a substituted or unsubstituted arylene group.

According to one embodiment of the present invention, in Formula 1, L 1 and L 3 are the same or different and are each independently a direct bond; A phenylene group substituted or unsubstituted with a halogen group or an alkyl group; Or a biphenylene group substituted or unsubstituted with a halogen group or an alkyl group.

According to one embodiment of the present invention, in Formula 1, L 1 and L 3 are the same or different and are each independently a direct bond; A phenylene group substituted or unsubstituted with a fluorine or methyl group; Or a biphenylene group substituted or unsubstituted with a fluorine or methyl group.

According to one embodiment of the present invention, G1 to G5 and G8 to G10 are the same or different and each independently represents a substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group.

According to one embodiment of the present invention, G1 to G5 and G8 to G10 are the same or different and each independently represents an alkyl group substituted or unsubstituted with a halogen group; Or an aryl group substituted or unsubstituted with an alkyl group.

According to one embodiment of the present invention, G1 to G5 and G8 to G10 are the same or different and are each independently a methyl group substituted or unsubstituted with fluorine; n-propyl group; t-butyl group; n-hexyl group; 2-methylpropyl group; A phenyl group substituted or unsubstituted with a methyl group or a t-butyl group; Or a terphenyl group substituted or unsubstituted with a t-butyl group.

According to one embodiment of the present invention, G1 and G2 are bonded to each other to form a substituted or unsubstituted ring.

According to one embodiment of the present disclosure, G1 and G2 are bonded to each other to form a substituted or unsubstituted hydrocarbon ring.

According to one embodiment of the present disclosure, G1 and G2 are bonded to each other to form a cyclopentane ring; Cyclohexane ring; To form a fluorene ring.

According to one embodiment of the present invention, G3 and G4 are bonded to each other to form a substituted or unsubstituted ring.

According to one embodiment of the present disclosure, G3 and G4 are bonded to each other to form a substituted or unsubstituted hydrocarbon ring.

According to one embodiment of the present disclosure, G3 and G4 combine with each other to form a fluorene ring.

According to one embodiment of the present disclosure, G9 and G10 are bonded to each other to form a substituted or unsubstituted ring.

According to one embodiment of the present disclosure, G9 and G10 are bonded to each other to form a substituted or unsubstituted hydrocarbon ring.

According to one embodiment of the present invention, G9 and G10 combine with each other to form a fluorene ring.

According to one embodiment of the present invention, the compound represented by Formula 1 has a maximum emission peak in a film state within 610 nm to 650 nm.

According to an embodiment of the present invention, the compound represented by Formula 1 has a maximum emission peak within a range of 610 nm to 650 nm in a film state, and a half-width of an emission peak is 60 nm or less. Such a compound can emit red light.

According to one embodiment of the present invention, the quantum efficiency of the compound represented by Formula 1 is 0.7 or more.

In the present specification, the term "film state" is not a solution state, but refers to a state in which the compound represented by Formula 1 is mixed with other components that do not affect the measurement of the half width, do.

In the present specification, the half-width refers to the width of the emission peak when the maximum emission peak of light emitted from the compound represented by Formula 1 is half the maximum height.

In this specification, the quantum efficiency can be measured using a method known in the art, and can be measured using, for example, an integrating sphere.

According to one embodiment of the present disclosure, Formula 1 is selected from the following compounds.

According to one embodiment of the present disclosure, a resin matrix; And a color conversion film comprising the compound represented by the general formula (1) dispersed in the resin matrix.

The content of the compound represented by the formula (1) in the color conversion film may be in the range of 0.001 to 10% by weight.

The color conversion film may contain one kind or two or more kinds of the compounds represented by the above formula (1). For example, as another example, the color conversion film may include one compound that emits red light among the compounds represented by Formula 1. As another example, the color conversion film may include a phosphor emitting light at 590 nm at 490 nm and a compound represented by the formula (1).

The color conversion film may further include a fluorescent substance in addition to the compound represented by Formula 1. [ When a light source that emits blue light is used, the color conversion film preferably includes both a green light emitting fluorescent material and a red light emitting fluorescent material. When a light source that emits blue light and green light is used, the color conversion film may include only a red light emitting fluorescent material. However, the present invention is not limited thereto. In the case of using a light source that emits blue light, when a separate film containing a green light emitting fluorescent material is laminated, the color conversion film may include only a red light emitting compound. Conversely, even when a light source that emits blue light is used, in the case of laminating a separate film containing a red light-emitting fluorescent material, the color conversion film may include only a green light-emitting compound.

According to one embodiment of the present invention, the haze value of the color conversion film is 50 to 95%. And preferably 65 to 85%. When the haze value of the color conversion film is in the above range, the color conversion efficiency of the color conversion film can be improved.

According to one embodiment of the present invention, the color conversion film further includes at least one fine particle made of at least one of an organic material and an inorganic material.

The fine particles are coated with a material for suppressing extinction of the compound represented by the formula (1).

The inorganic fine particles include inorganic oxides, inorganic nitrides or inorganic acid nitrides. Specifically, the fine particles may be SiO _x , SiN _x , SiO _x N _y , AlO _x , TiO _x , TaO _x , ZnO _x , ZrO _x , CeO _x and ZrSiO _x wherein x is 0.1 to 2 and y is 0.5 To 1.3). Of these, TiO _x , ZnO _x , ZrO _x and CeO _x are preferable.

On the surface of the fine particles, a coating layer for suppressing quenching of the compound represented by the formula (1) can be formed. Examples of the coating layer for suppressing extinction of the phosphor include a method of preventing destruction of dye or binder resin caused by fine particles which act as a photocatalyst, and inserting fine particles having semiconductivity. Examples of forming such a coating layer include alumina, zirconia, silica, zirconia silicate, alumina silicate, glass borosilicate glass and the like.

The fine particles may be hollow bodies. When the hollow fine particles are used, the refractive index between the air (hollow portion) and the resin matrix is large (the refractive index of air is 1.0, and the resin matrix is 1.5 to 1.6). It is also preferable that oxygen in the air inhibits the deterioration of the compound represented by the above formula (1).

It is preferable that the refractive index of the fine particles is high or low, more specifically, the refractive index is 2.0 to 2.8 or 1.0 to 1.2. By using such fine particles, the optical path length of the light in the color conversion film can be made longer from the light source, and the color conversion film can efficiently absorb light from the light source. Further, the converted light can be scattered and the extraction efficiency can be improved. Therefore, the conversion efficiency of the color conversion film can be improved. Examples of such fine particles include TiO ₂ fine particles (refractive index = 2.7), ZnO (refractive index = 2.0), CeO ₂ (refractive index = 2.4), ZrO ₂ (refractive index = 2.2), hollow silica and hollow glass.

The primary average particle diameter of the fine particles is not particularly limited as long as the haze value is within the above range, but is preferably 1 nm or more and less than 500 nm, particularly preferably 5 nm or more and less than 200 nm. When the particle diameter is 500 nm or more, there is a fear that the fine particles are not uniformly dispersed in the color conversion film, uniform light emission can not be obtained, or high-precision patterning can not be performed by photolithography or the like. On the other hand, if it is less than 1 nm, there is a fear that light scattering is not sufficiently generated. On the other hand, in the color conversion film, fine particles aggregate to a diameter of 500 nm or more in some cases. However, there is no problem if the primary average particle diameter is less than 1 nm and less than 500 nm.

The addition amount of the fine particles in the color conversion film is not particularly limited as long as the haze value is within the above range, but it is usually preferably more than 5 wt% but less than 70 wt%, more preferably 10 wt% to 50 wt%. When the amount is less than 5% by weight, light scattering may not be sufficiently generated. When the amount is more than 70% by weight, there is a fear that the color conversion film is mechanically dried.

On the other hand, the organic or inorganic fine particles may be used alone or in combination of two or more.

Wherein the color conversion film comprises a resin matrix; And a further layer containing a light-emitting compound dispersed in the resin matrix and having a wavelength different from that of the compound represented by the general formula (1). The compound emitting light having a wavelength different from that of the compound represented by the formula (1) may also be a compound represented by the formula (1) or a known fluorescent material.

The material of the resin matrix is preferably a thermoplastic polymer or a thermosetting polymer. Specifically, examples of the material of the resin matrix include poly (meth) acrylate, polycarbonate (PC), polystyrene (PS), polyarylene (PAR), polyurethane (TPU ), Styrene-acrylonitrile series (SAN), polyvinylidene fluoride series (PVDF), and modified polyvinylidene fluoride series (modified-PVDF).

According to one embodiment of the present specification, the color conversion film according to the above-described embodiment further includes light diffusing particles. By dispersing the light diffusion particles in the color conversion film in place of the conventional light diffusion film in order to improve the brightness, the adhesion process can be omitted as compared with the use of a separate optical acid film, .

As the light-diffusing particles, resin matrices and particles having a high refractive index can be used. For example, TiO ₂ , silica, borosilicate, alumina, sapphire, air or other gas, air- or gas- filled hollow beads or particles , Air / gas-filled glass or polymer); Polymer particles including polystyrene, polycarbonate, polymethylmethacrylate, acrylic, methylmethacrylate, styrene, melamine resin, formaldehyde resin, or melamine and formaldehyde resin, or any suitable combination thereof may be used .

The particle size of the light-diffusing particles may be in the range of 0.1 micrometer to 5 micrometers, for example, in the range of 0.3 micrometer to 1 micrometer. The content of the light-diffusing particles may be determined as necessary, and may be, for example, within a range of about 1 to 30 parts by weight based on 100 parts by weight of the resin matrix.

The color conversion film according to the above-described embodiment may have a thickness of 2 micrometers to 200 micrometers. In particular, the color conversion film can exhibit high luminance even at a thin thickness of 2 to 20 micrometers. This is because the content of the fluorescent substance molecules contained in the unit volume is higher than the quantum dots.

The color conversion film according to the above-described embodiments may have a substrate on one side thereof. This substrate may serve as a support in the production of the color conversion film. The kind of the substrate is not particularly limited and is not limited to the material and thickness as long as it is transparent and can function as the support. Here, transparent means that the visible light transmittance is 70% or more. For example, a PET film may be used as the substrate.

The above-mentioned color conversion film can be produced by coating a resin solution in which the compound represented by the formula (1) has been dissolved on a substrate and drying or extruding the compound represented by the formula (1) together with the resin to form a film.

Since the compound represented by the above-mentioned formula (1) is dissolved in the resin solution, the compound represented by the formula (1) is homogeneously distributed in the solution. This is different from the manufacturing process of a quantum dot film requiring a separate dispersion process.

The resin solution in which the compound represented by Formula 1 is dissolved is not particularly limited as long as the compound represented by Formula 1 is dissolved in the solution.

According to an example, the resin solution in which the compound represented by Formula 1 is dissolved may be prepared by preparing a first solution by dissolving the compound represented by Formula 1 in a solvent, dissolving the resin in a solvent to prepare a second solution, And then mixing the solution and the second solution. When the first solution and the second solution are mixed, it is preferable to mix them homogeneously. However, the present invention is not limited to this, and a method of dissolving the compound represented by Chemical Formula 1 and a resin simultaneously in a solvent to dissolve the compound represented by Chemical Formula 1 and dissolving the compound represented by Chemical Formula 1 in a solvent followed by dissolving the resin by dissolving the resin in a solvent, A method of dissolving a compound represented by the formula

As the resin contained in the solution, the above-mentioned resin matrix material, a monomer curable with the resin matrix resin, or a mixture thereof can be used. For example, as the monomer curable with the resin matrix resin, there is a (meth) acrylic monomer, which can be formed from a resin matrix material by UV curing. In the case of using such a curable monomer, an initiator necessary for curing may be further added if necessary.

The solvent is not particularly limited and is not particularly limited as long as it can be removed by drying without adversely affecting the coating process. Non-limiting examples of the solvent include toluene, xylene, acetone, chloroform, various alcohol solvents, MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), EA (ethyl acetate), butyl acetate, DMF Amide), DMAc (dimethylacetamide), DMSO (dimethylsulfoxide), NMP (N-methyl-pyrrolidone) and the like may be used alone or in admixture of two or more. When the first solution and the second solution are used, the solvent contained in each of these solutions may be the same or different. Even when different kinds of solvents are used for the first solution and the second solution, it is preferable that these solvents have compatibility so that they can be mixed with each other.

A roll-to-roll process can be used for the step of coating the resin solution on which the compound represented by the formula (1) is dissolved. For example, a step of dissolving a substrate from a roll on which a substrate is wound, coating a resin solution in which the compound represented by the formula (1) is dissolved on one surface of the substrate, drying, and then winding the same on a roll again. In the case of using a roll-to-roll process, it is preferable to determine the viscosity of the resin solution within a range in which the process can be performed, and may be determined within a range of, for example, 200 to 2,000 cps.

As the coating method, various known methods can be used, for example, a die coater may be used, and various bar coating methods such as a comma coater, a reverse comma coater, and the like may be used.

After the coating, a drying process is performed. The drying process can be carried out under the conditions necessary for removing the solvent. For example, the substrate is dried in an oven located adjacent to the coater in a direction in which the substrate proceeds in a coating process, under conditions that the solvent is sufficiently blown, and a color conversion including a fluorescent substance, A film can be obtained.

When a monomer curable with the resin matrix resin is used as the resin contained in the solution, curing such as UV curing may be performed before or during the drying.

When the compound represented by the formula (1) is extruded together with the resin to form a film, extrusion methods known in the art can be used. For example, the compound represented by the formula (1) is reacted with a polycarbonate- ) Acrylic resin, and styrene-acrylonitrile (SAN) resin are simultaneously extruded to produce a color conversion film.

According to one embodiment of the present invention, the color conversion film may be provided on at least one side with a protective film or a barrier film. As the protective film and the barrier film, those known in the art can be used.

According to one embodiment of the present disclosure, there is provided a backlight unit including the above-mentioned color conversion film. The backlight unit may have a backlight unit configuration known in the art, except that it includes the color conversion film. FIG. 1 shows a schematic diagram of a backlight unit structure according to an example. The backlight unit according to FIG. 1 includes a side-chain type light source 101, a reflection plate 102 surrounding the light source, a light guide plate 103 for directly emitting light from the light source or guiding light reflected from the reflection plate, And a color conversion film 105 provided on the opposite surface of the light guide plate opposite to the reflective layer. In FIG. 1, the gray portion is the light dispersion pattern 106 of the light guide plate. The light introduced into the light guide plate has a non-uniform light distribution due to repetition of optical processes such as reflection, total reflection, refraction, and transmission, and a two-dimensional light dispersion pattern can be used to induce uniform brightness. However, the scope of the present invention is not limited to that shown in FIG. 1, and the light source may be a direct-type as well as a side-chain type, and a reflector or a reflective layer may be omitted or replaced with another structure if necessary, A light-diffusing film, a light-condensing film, a luminance improving film, and the like.

According to an embodiment of the present disclosure, there is provided a display device including the backlight unit. And is not particularly limited as long as it is a display device including a backlight unit, and may be included in a TV, a computer monitor, a notebook computer, a mobile phone, and the like.

Hereinafter, the present invention will be described in detail by way of examples with reference to the drawings. However, the embodiments according to the present disclosure can be modified in various other forms, and the scope of the present specification is not construed as being limited to the embodiments described below. Embodiments of the present disclosure are provided to more fully describe the present disclosure to those of ordinary skill in the art.

The compound represented by the formula (1) can be produced by a general synthesis method such as the following general formula (1) or (2).

≪ General Formula 1 &

The substituent X is Br or I and does not define the substituent of the boron of L 'upon Suzuki coupling.

In the case of boron-pyrromethene metal complexes, they were synthesized according to the general method of production (Chem. Rev. 2007, 107, 4891-4932), and the boron-pyrromethene skeleton was connected via Suzuki coupling.

≪ General Formula 2 &

In the case of boron-pyrromethene metal complexes, it was synthesized according to the general method of preparation (Chem. Rev. 2007, 107, 4891-4932), and L was substituted with dihydric aldehyde.

The synthesis of arylpyrrol proceeded according to the literature (J. Org. Chem. 2005, 70, 5571-5578).

Preparation Example 1) Preparation of Compound 1-1

After 2,4-diphenyl-1H-pyrrole (3 g, 13.6 mmol) and 4,4'-dioxybenzaldehyde (0.7 g, 3.0 mmol) were completely dissolved in CH ₂ Cl ₂ (200 mL) 0.1 ml of acetic acid was added, and the mixture was stirred at room temperature for 3 hours. The resulting mixture was cooled to 0 < 0 > C and DDQ (3.1 g, 13.6 mmol) was added. After stirring at room temperature for 1 hour, TEA (10 mL) was added dropwise. After stirring at room temperature for 30 minutes, BF ₃ OEt ₂ (15 mL) was added dropwise and the mixture was stirred at room temperature for 3 hours. The solvent was distilled off under reduced pressure, and the residue was purified by column chromatography (hexane / ethyl acetate) to obtain an orange solid compound 1-1 (1.2 g, yield: 33%). In the toluene solution (1 x 10 ^-5 M) of Compound 1-1, the emission wavelength was 597 nm and the quantum efficiency was 0.71.

[M + H] < ⁺ > = 1159

Preparation Example 2) Preparation of Compound 1-9

Preparation of Compound P1: 2,4-Diphenyl- 1H -pyrrole (3 g, 13.6 mmol) and 4-iodobenzaldehyde (1.4 g, 6.0 mmol) were completely dissolved in CH ₂ Cl ₂ , 0.1 ml of trifluoroacetic acid was added, and the mixture was stirred at room temperature for 3 hours. The resulting mixture was cooled to 0 < 0 > C and DDQ (1.5 g, 6.6 mmol) was added. After stirring at room temperature for 1 hour, TEA (10 mL) was added dropwise. After stirring at room temperature for 30 minutes, BF ₃ OEt ₂ (15 mL) was added dropwise and the mixture was stirred at room temperature for 3 hours. The solvent was distilled off under reduced pressure, and the residue was purified by column chromatography (hexane / ethyl acetate) to obtain a red solid compound P1 (2.2 g, yield: 51%).

[M + H] < ⁺ > = 699

Preparation of Compound 1-9: Compound P1 (2.0 g, 2.86 mmol) and (9,9-dihexyl -9 H - florene-2,7-diyl) diborane acid (0.60 g, 1.42 mmol) in toluene (50 (K ₂ CO ₃ , potassium carbonate, 1.60 g, 11.5 mmol) was added to the reaction solution together with water (20 ml), and tetrakis (triphenylphosphine) Palladium (0.2 g, 0.16 mmol) was added. After reflux stirring for 5 hours, the temperature was lowered to room temperature and extracted with chloroform. Dried with anhydrous magnesium sulfate, filtered, and distilled under reduced pressure to remove the solvent. Through a silica gel column, red solid 1-9 (0.42 g, yield 19%) was obtained. In the toluene solution (1 X 10 < -5 > M) of Compound 1-9, the emission wavelength was 601 nm and the quantum efficiency was 0.77.

[M + H] < ⁺ > = 1475

Production Example 3) Preparation of Compound 1-42

Preparation of Compound P2: A mixture of 2- (4- (tert-butyl) phenyl) -4-phenyl- 1H -pyrrole (5 g, 18.1 mmol) and 4-bromo-2,6-dimethylbenzaldehyde (1.9 g, 8.9 mmol) was completely dissolved in CH ₂ Cl ₂ (200 mL), 0.1 ml of trifluoroacetic acid was added, and the mixture was stirred at room temperature for 3 hours. The resulting mixture was cooled to 0 < 0 > C and DDQ (2.2 g, 9.7 mmol) was added. After stirring at room temperature for 1 hour, TEA (10 mL) was added dropwise. After stirring at room temperature for 30 minutes, BF ₃ OEt ₂ (15 mL) was added dropwise and the mixture was stirred at room temperature for 3 hours. The solvent was distilled off under reduced pressure, and the residue was purified by column chromatography (hexane / ethyl acetate) to obtain a red solid compound P2 (4.1 g, yield: 58%).

[M + H] < ⁺ > = 791

Preparation of Compound 1-42: Compound P2 (4.0 g, 5.0 mmol) and (sulfonylbis (4,1-phenylene)) diboronic acid (0.70 g, 2.3 mmol) were dissolved in toluene (100 ml) and ethanol (K ₂ CO ₃ , potassium carbonate, 1.60 g, 11.5 mmol) was added to the reaction solution together with water (30 ml), and tetrakis (triphenylphosphine) palladium (0.2 g, 0.16 mmol ). After reflux stirring for 5 hours, the temperature was lowered to room temperature and extracted with chloroform. Dried with anhydrous magnesium sulfate, filtered, and distilled under reduced pressure to remove the solvent. Through a silica gel column, a red solid 1-42 (1.1 g, yield 29%) was obtained. In the toluene solution (1 X 10 < -5 > M) of Compound 1-1, the emission wavelength was 620 nm and the quantum efficiency was 0.81.

[M + H] < ⁺ > = 1639

Production Example 4) Preparation of Compound 1-52

Preparation of Compound 1-52: Compound P2 (4.0 g, 5.0 mmol) and (cyclohexane-1,1-diyl bis 4,1-phenylene)) diboronic acid (0.80 g, 2.46 mmol) were dissolved in toluene (100 ml) (K ₂ CO ₃ , potassium carbonate, 3.5 g, 25.3 mmol) was added to the reaction solution together with water (30 ml), and tetrakis (triphenylphosphine) palladium 0.2 g, 0.16 mmol). After reflux stirring for 5 hours, the temperature was lowered to room temperature and extracted with chloroform. Dried with anhydrous magnesium sulfate, filtered, and distilled under reduced pressure to remove the solvent. Through a silica gel column, a red solid 1-52 (1.4 g, yield 34%) was obtained. In the toluene solution (1 x 10 ^-5 M) of Compound 1-52, the emission wavelength was 621 nm and the quantum efficiency was 0.83.

[M + H] < ⁺ > = 1656

Example 1

Compound 1-1 was dissolved in solvent DMF to prepare a first solution. The thermoplastic resin SAN was dissolved in the solvent toluene to prepare a second solution. The first solution and the second solution are mixed so that the amount of the organic phosphor is 0.3 and the amount of TiO ₂ is 5 parts by weight based on 100 parts by weight of the SAN, and the amount of TiO ₂ is 5 based on 100 parts by weight of the SAN And then mixed homogeneously. The solids content of the mixed solution was 20% by weight and the viscosity was 200 cps. This solution was coated on a PET substrate and dried to prepare a color conversion film. The thickness of the prepared color conversion film is 10 to 15 mm. The luminance spectrum of the prepared color conversion film was measured with a spectroradiometer (TOPCON SR series). Specifically, the prepared color conversion film was laminated on one side of a light guide plate of a backlight unit including LED blue backlight (maximum emission wavelength: 450 nm) and a light guide plate, and a prism sheet and a DBEF film were laminated on the color conversion film, Was measured. In the measurement of the luminance spectrum, the initial value was set so that the brightness of the blue LED light was 600 nit based on the W / o color conversion film. The color conversion film emitted light at 615 nm under blue LED light.

The brightness was reduced by 3.5% after 500 hours under a blue backlight (1000 nit) at a temperature of 60 ° C.

Example 2

A color conversion film was prepared in the same manner as in Example 1 except that Compound 1-9 was used instead of Compound 1-1. The color conversion film emitted light at 614 nm under blue LED light. The luminance decreased by 4.1% after 500 hours at 60 ° C under a blue backlight (1000 nit).

Example 3

A color conversion film was prepared in the same manner as in Example 1 except that Compound 1-42 was used instead of Compound 1-1. The color conversion film emitted light at 636 nm under blue LED light. The luminance was reduced by 1.2% after 500 hours at a temperature of 60 ° C under blue backlight (1000 nit) driving.

Example 4

A color conversion film was prepared in the same manner as in Example 1, except that Compound 1-52 was used instead of Compound 1-1. The color conversion film emitted light at 614 nm under blue LED light. The luminance decreased by 1.0% after 500 hours under the blue backlight (1000 nit) driving at the temperature of 60 ° C.

Comparative Example 1

[Comparative Example Compound 1]

A color conversion film was prepared in the same manner as in Example 1, except that the compound of Comparative Example 1 was used instead of the compound 1-1. The color conversion film emitted light at 614 nm under blue LED light. The brightness decreased by 4.5% after 500 hours under the blue backlight (1000 nit) driving at the temperature of 60 ° C.

As can be seen from Examples 1 to 4 and Comparative Example 1, the compound represented by Formula 1 according to one embodiment of the present invention can be used for the production of a color conversion film having excellent light resistance as compared with Comparative Compound 1, which is a conventional compound have.

101: a side-chain type light source
102: reflector
103: light guide plate
104: reflective layer
105: color conversion film
106: light dispersion pattern

Claims (14)

A compound represented by the following formula (1):
[Chemical Formula 1]

In Formula 1,
X1, X2, X11 and X12 are the same or different from each other and each independently represents a halogen group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryloxy group; Or a substituted or unsubstituted aryl group,
R1 to R6 and R11 to R16 are the same or different from each other, and each independently hydrogen; A nitrile group; A substituted or unsubstituted ester group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group,
L1 and L3 are the same or different and each independently represents a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,
l1 and l3 are each an integer of 1 or more,
When l1 and l3 are two or more, the structures in parentheses of two or more are the same or different,
L2 is a substituted or unsubstituted arylene group; A substituted or unsubstituted heteroarylene group; Or any one of the following structural formulas,

In the above formula,
G1 to G5 are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group, or adjacent groups are bonded to each other to form a substituted or unsubstituted ring,
* Is a site to be bonded to the end of L1 or L3. 2. The compound according to claim 1, wherein L2 is selected from the following formulas:

In the above formula,
G1 to G20 are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group, or adjacent groups are bonded to each other to form a substituted or unsubstituted ring,
g6, g7 and g11 to g16 are each an integer of 1 to 3,
g17 and g18 are each an integer of 1 to 7,
g19 is an integer of 1 to 8,
g20 is an integer of 1 to 6,
When g6, g7 and g11 to g20 are each 2 or more, the structures in parentheses of 2 or more are the same or different,
* Is a site to be bonded to the end of L1 or L3. The compound according to claim 1, wherein the compound represented by Formula 1 has a maximum emission peak in a film state within 610 nm to 650 nm. The compound according to claim 1, wherein the compound represented by Formula 1 has a maximum emission peak in a film state within a range of 610 nm to 650 nm, and a half-width of an emission peak is 60 nm or less. The compound according to claim 1, wherein the compound represented by the formula (1) has a quantum efficiency of 0.7 or more. The compound according to claim 1, wherein the compound represented by the formula (1) has a ratio of a decrease in blue fluorescence to an increase in red fluorescence when the brightness of the blue LED light is 600 nits, Is 0.96 or more. The compound according to claim 1, wherein the compound represented by the formula (1) is selected from the following compounds:

Resin matrix; And a coloring film comprising a compound represented by formula (1) according to claim 1 dispersed in the resin matrix. The color conversion film according to claim 8, wherein the color conversion film further comprises at least one fine particle made of at least one of an organic material and an inorganic material. The color conversion film according to claim 9, wherein the fine particles are coated with a material for suppressing quenching of the compound represented by Formula (1). 11. The color conversion film according to claim 10, wherein the haze value of the color conversion film is 50 to 95%. The method according to claim 9, wherein the fine particles are SiO _x, SiN _x, SiO _x N _y, AlO _x, TiO _x, TaO _x, ZnO _x, ZrO _x, CeO _x and ZrSiO _x (in formula, x is from 0.1 to 2, and y is 0.5 to 1.3). A backlight unit comprising the color conversion film according to claim 8. A display device comprising a backlight unit according to claim 13.

Images