JP2005190667A - Color conversion film and display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color conversion film having high red color purity, emitting light with high efficiency, and having high stability. <P>SOLUTION: This color conversion film contains at least one color conversion material expressed by general formula A, and emits light by absorbing luminescence from a part other than the color conversion material. In general formula A, R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>and R<SP>5</SP>are each a hydrogen atom or a substituted group; X is an oxygen atom, a sulfur atom or N-R<SP>Y1</SP>, and R<SP>Y1</SP>is a hydrogen atom or a substituted group; L is a connection group comprising a covalent bond; and R<SP>x</SP>and R<SP>Y</SP>are each a hydrogen atom or a substituted group, and at least either of them is an electron with drawing group. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a color conversion film that enables high-definition multicolor display with excellent durability and productivity, and a multicolor display element using the color conversion film.

  Recently, high-definition thin color displays have been used in various products such as small displays of mobile terminals such as mobile phones and mobile computers, medium to large displays such as desktop computers and thin televisions. These color displays are required to emit multicolor light, and as full-color displays, those composed of pixels that emit light mainly in three colors of blue, green, and red have been developed. As for the coloring method of these three colors of pixels, a method of separately arranging blue, green and red light emitters such as LEDs and organic electroluminescent elements and emitting each of them (Patent Documents 1 to 3, etc.) As is known, in the case of an organic electroluminescent element, since three color light emitting materials must be arranged in a matrix with high definition, the technical difficulty is high and the manufacturing cost is high. In addition, since the light emitting lifetimes of the three kinds of light emitting materials are different, there is a drawback that the color purity changes with time. Further, there is a method (Patent Document 4) in which a color filter is used for an organic electroluminescent element that emits white light, and the three primary colors are transmitted (Patent Document 4).

Also known is a method (Patent Document 5 or the like) in which light emitted from a light emitter is absorbed by fluorescent light emitters arranged in a matrix, and each of the phosphors emits RGB fluorescence. A color conversion method using a fluorescent material that absorbs the above light and emits fluorescence in the visible light region as a filter is disclosed (Patent Document 6, Patent Document 7, etc.). An element using such a color conversion film having a fluorescent dye is advantageous in that a full-color display can be constructed even by using weak energy rays such as near ultraviolet light or blue light of a light emitter. In addition, a color conversion film to which a fluorescent dye is added is formed on a reflective electrode, and a reflection type color liquid crystal display device that utilizes fluorescence when external light is reflected on the electrode and passes through the fluorescent layer (patented) Document 8 etc.) is disclosed.
As a patterning method for these color conversion films, (1) a fluorescent dye is dispersed in light, heat / light and heat-reactive liquid resist, and this is formed by spin coating or the like, followed by photolithography. A method of patterning (Patent Document 9), and (2) a method of dispersing a fluorescent dye or fluorescent pigment in a basic binder and etching it with an acidic aqueous solution (Patent Document 10). Examples include a method of co-depositing a molecular binder using a mask and patterning.
JP-A-57-157487, JP-A-58-147899, JP-A-3-214593 Japanese Patent Laid-Open No. 3-194895 Japanese Patent Laid-Open No. 3-152897 JP-A-5-258850 Japanese Patent Laid-Open No. 9-208944 JP 2002-131729 A Japanese Patent Laid-Open No. 5-198921 Japanese Patent Laid-Open No. 9-208944

For practical use as a color display, it is important that fine color display is possible, light emission efficiency is excellent, long-term stability is excellent, and device fabrication is simple. In particular, the luminous efficiency of the red light emitting element is disadvantageous from the viewpoint of visibility, and in order to exhibit the same level of luminance as other colors, higher efficiency light emission and higher stability against stronger excitation light are required. Moreover, in order to produce a pigment | dye conversion film by a co-evaporation method, favorable vapor deposition ability is required.
Accordingly, the present inventor has made an object to provide a color conversion film having high red purity, high efficiency light emission, and high stability.

As a result of intensive studies, the present inventor has solved the above problems by the following means.
1. A color conversion film containing at least one color conversion material represented by the general formula (A) and emitting light by absorbing light emitted from other than the color conversion material.

In general formula (A), R ¹ , R ² , R ³ , R ⁴ , and R ⁵ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. L represents a linking group comprising a conjugated bond. R ^x and R ^y each represent a hydrogen atom or a substituent, and at least one of them represents an electron withdrawing group.
2. The color conversion film includes at least one light emitting layer that emits light by absorbing light emitted from other than the color conversion film, and the light emitting layer contains a compound represented by the general formula (A). 2. The color conversion film according to 1.
3. The color conversion film according to 1 or 2, wherein the general formula (A) is represented by the general formula (I).
Formula (I)

In the formula, R ¹ , R ² , R ³ , R ⁴ and R ⁵ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. L represents a linking group comprising a conjugated bond. Z ¹ represents an atomic group necessary for forming a 5- to 6-membered ring. Further, the compound represented by the general formula (I) may be one in which a metal complex is formed.
4). The color conversion film according to any one of 1 to 3, wherein the general formula (A) is represented by the general formula (II).
Formula (II)

In the formula, R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ³¹ , R ³² , R ³³ and R ³⁴ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. Z ² represents an atomic group necessary for forming a 5- to 6-membered ring. L ₂₁ and L ₂₂ may be the same or different from each other, and each represents a methine group, a substituted methine group or a nitrogen atom. n represents an integer of 0 to 3.
5). Furthermore, it has at least 1 sort (s) of matrix material, The color conversion film in any one of 1-4 characterized by the above-mentioned.
6). 6. The matrix material has at least a photocurable, and / or thermosetting, and / or photothermal combination curable resin, in which a crosslinking reaction proceeds and cures by light and / or heat. Color conversion film.
7). The color conversion film according to 5 or 6, wherein the matrix material has at least a matrix material mixed by a co-evaporation method.
A color conversion display comprising the color conversion film according to 8.1 to 7 and a light emitter on the color conversion film.
A light emitter on the color conversion film described in 9.8 is formed by sequentially laminating an electrically independent transparent electrode layer, a light emitting layer containing a light emitting material, and a second electrode layer forming a plurality of pixels. 9. The pixel according to claim 8, wherein an electrical signal is input to the pixel to cause the pixel to emit light, the emitted light enters the color conversion film of the light emitting portion, and the color conversion material in the color conversion film emits fluorescence. Color conversion display.

  The color conversion film of the present invention is excellent in red purity, emits light with high efficiency, and has high stability. In addition, a high-definition color conversion film having good vapor deposition suitability by a co-vapor deposition method can be produced. In addition, a display using the color conversion film is excellent in red purity, emits light with high efficiency, and has high stability.

  The color conversion film of the present invention contains at least one color conversion material represented by the general formula (A) and emits light by absorbing light other than the color conversion material. Conversion material light-emitting film).

The compound represented by the general formula (A) of the present invention will be described below. In general formula (A), R ¹ , R ² , R ³ , R ⁴ , and R ⁵ may be the same or different from each other, and each represents a hydrogen atom or a substituent.

Examples of the substituent represented by R ¹ and R ² include an alkyl group (preferably having 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, and particularly preferably 6 to 12 carbon atoms, such as n-hexyl). , N-octyl, n-decyl, n-hexadecyl, tert-amyl, cyclopropyl, cyclopentyl, cyclohexyl, etc.), an alkenyl group (preferably having 6 to 20 carbon atoms, more preferably having 6 to 16 carbon atoms, Particularly preferably, it has 6 to 12 carbon atoms, such as 4-hexanyl), an alkynyl group (preferably 6 to 20, more preferably 6 to 16 carbon atoms, particularly preferably 2 to 8 carbon atoms). For example, propargyl, 4-hexanyl, etc.), an aryl group (preferably having 6 to 30 carbon atoms, more preferably having 6 to 20 carbon atoms, Preferably have 6 to 12 carbon atoms, such as phenyl, p-methylphenyl, naphthyl, anthryl, phenanthryl, pyrenyl, etc.), acyl groups (preferably 6 to 20 carbon atoms, more preferably 6 carbon atoms). To 16, particularly preferably 6 to 12 carbon atoms, such as hexanoyl, 2,2-dimethylbutyroyl, benzoyl, etc.), alkoxycarbonyl groups (preferably 6 to 20 carbon atoms, more preferably carbon atoms). 6 to 16, particularly preferably 6 to 12 carbon atoms, and examples thereof include pentyloxycarbonyl and octyloxycarbonyl).

An aryloxycarbonyl group (preferably having a carbon number of 7 to 20, more preferably a carbon number of 7 to 16, particularly preferably a carbon number of 7 to 10, such as phenyloxycarbonyl), a sulfamoyl group (preferably a carbon 6 to 20, more preferably 6 to 16 carbon atoms, particularly preferably 6 to 12 carbon atoms, such as hexylsulfamoyl, dipropylsulfamoyl, phenylsulfamoyl, etc.), carbamoyl group ( Preferably it has 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, particularly preferably 6 to 12 carbon atoms, and examples thereof include pentylcarbamoyl, dipropylcarbamoyl, phenylcarbamoyl and the like, and a sulfonyl group (preferably 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, particularly preferably carbon 6 to 12, for example, hexylsulfonyl, tosyl, etc.), sulfinyl group (preferably having 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, particularly preferably 6 to 12 carbon atoms, Examples thereof include methanesulfinyl, benzenesulfinyl, etc.), imino group, heterocyclic group (preferably having 1 to 30 carbon atoms, more preferably 1 to 12 carbon atoms. Examples of heteroatoms include nitrogen atoms and oxygen atoms. Specific examples include imidazolyl, pyridyl, quinolyl, furyl, thienyl, piperidyl, morpholino, benzoxazolyl, benzoimidazolyl, benzothiazolyl, carbazolyl, azepinyl, and the like. These substituents may be further substituted. When there are two or more substituents, they may be the same or different. If possible, they may be linked to each other to form a ring.

R ¹ and R ² are preferably hydrogen atoms, aliphatic hydrocarbon groups (alkyl groups, alkenyl groups, alkynyl groups), aryl groups, heterocyclic groups, and L and alkylene groups connected to form a 5- or 6-membered ring. R ¹ and R ² are linked to form a 5- to 7-membered ring, more preferably a hydrogen atom, an alkyl group, an aryl group, and L and an alkylene group are linked to form a 5- or 6-membered ring. R ¹ and R ² are linked to form a 5- to 7-membered ring, particularly preferably an alkyl group having 6 to 12 carbon atoms, and L and an alkylene group are linked to form a 5- or 6-membered ring. Formed, R ¹ and R ² are linked to form a 5- to 7-membered ring.

Examples of the substituent represented by R ^{3 to} R ⁵ include an alkyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 8 carbon atoms, such as methyl and ethyl). , Iso-propyl, tert-butyl, n-octyl, n-decyl, n-hexadecyl, cyclopropyl, cyclopentyl, cyclohexyl, etc.), an alkenyl group (preferably having 2-20 carbon atoms, more preferably carbon number). 2 to 12, particularly preferably 2 to 8 carbon atoms, such as vinyl, allyl, 2-butenyl, 3-pentenyl, etc.), alkynyl groups (preferably 2 to 20 carbon atoms, more preferably carbon numbers) 2 to 12, particularly preferably 2 to 8 carbon atoms, such as propargyl and 3-pentynyl), aryl groups (preferably Prime number 6-30, More preferably, it is C6-C20, Most preferably, it is C6-C12, for example, phenyl, p-methylphenyl, naphthyl, anthryl, phenanthryl, pyrenyl etc. are mentioned), an amino group ( Preferably it is C0-20, More preferably, it is C0-12, Most preferably, it is C0-6, for example, amino, methylamino, dimethylamino, diethylamino, diphenylamino, dibenzylamino etc. are mentioned. ), An alkoxy group (preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, particularly preferably 1 to 8 carbon atoms, such as methoxy, ethoxy, butoxy and the like), an aryloxy group ( Preferably it has 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, particularly preferably 6 to 12 carbon atoms, For example, phenyloxy, 2-naphthyloxy, etc.), a heterocyclic oxy group (preferably having 2 to 20 carbon atoms, more preferably 3 to 16 carbon atoms, particularly preferably 4 to 12 carbon atoms, such as pyridinooxy , Pyrimidinooxy, pyridazinooxy, benzimidazolyloxy, etc.), silyloxy groups (preferably having 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, particularly preferably 3 to 20 carbon atoms, such as trimethylsilyloxy, t-Butyldimethyl

Examples include oxy. ), An acyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as acetyl, benzoyl, formyl, pivaloyl, etc.), alkoxycarbonyl A group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, such as methoxycarbonyl, ethoxycarbonyl, etc.), an aryloxycarbonyl group (preferably 7 to 20 carbon atoms, more preferably 7 to 16 carbon atoms, particularly preferably 7 to 10 carbon atoms, such as phenyloxycarbonyl, etc.), acyloxy group (preferably 2 to 20 carbon atoms, more preferably Has 2 to 16 carbon atoms, particularly preferably 2 to 10 carbon atoms, such as acetoxy, benzoyloxy An acylamino group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, and particularly preferably 2 to 10 carbon atoms, and examples thereof include acetylamino and benzoylamino). An alkoxycarbonylamino group (preferably having 2 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, such as methoxycarbonylamino), aryloxycarbonylamino group (Preferably having 7 to 20 carbon atoms, more preferably having 7 to 16 carbon atoms, particularly preferably having 7 to 12 carbon atoms, such as phenyloxycarbonylamino), a sulfonylamino group (preferably having 1 carbon atom). To 20, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as methane And sulfamoyl groups (preferably having 0 to 20 carbon atoms, more preferably 0 to 16 carbon atoms, and particularly preferably 0 to 12 carbon atoms, such as sulfamoyl and methylsulfamoyl). , Dimethylsulfamoyl, phenylsulfamoyl, etc.), a carbamoyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, for example, carbamoyl , Methylcarbamoyl, diethylcarbamoyl, phenylcarbamoyl, etc.), an alkylthio group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as methylthio, Ethylthio etc.), arylthio group (preferably 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms,

Preferably it is C6-C12, for example, phenylthio etc. are mentioned. ), A heterocyclic thio group (preferably having 4 to 20 carbon atoms, more preferably 4 to 16 carbon atoms, particularly preferably 4 to 12 carbon atoms, such as pyridinothio, pyrimidinothio, pyridazinothio, benzimidazolylthio, thiadiazolylthio ), A sulfonyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as mesyl, tosyl, etc.), sulfinyl. A group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as methanesulfinyl, benzenesulfinyl, etc.), a ureido group (preferably having a carbon number) 1 to 20, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as ureido, Tilureido, phenylureido, etc.), phosphoric acid amide groups (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as diethyl phosphoramide, Phenyl phosphoric acid amide etc.), hydroxy group, mercapto group, halogen atom (for example, fluorine atom, chlorine atom, bromine atom, iodine atom), cyano group, sulfo group, carboxyl group, nitro group, hydroxamic acid group, A sulfino group, a hydrazino group, an imino group, a heterocyclic group (preferably having 1 to 30 carbon atoms, more preferably 1 to 12 carbon atoms, and the hetero atom includes, for example, a nitrogen atom, an oxygen atom, and a sulfur atom. Specific examples include imidazolyl, pyridyl, quinolyl, furyl, thienyl, piperidyl, morpholino, benzo Xazolyl, benzimidazolyl, benzothiazolyl, carbazolyl, azepinyl, etc.), silyl group (preferably having 3 to 40 carbon atoms, more preferably 3 to 30 carbon atoms, particularly preferably 3 to 24 carbon atoms, such as trimethylsilyl, And triphenylsilyl.) And the like. These substituents may be further substituted. When there are two or more substituents, they may be the same or different. If possible, they may be linked to each other to form a ring.

R ³ is preferably a hydrogen atom, an alkyl group, an aryl group, a halogen atom, or a cyano group, more preferably a hydrogen atom or an alkyl group, and still more preferably a hydrogen atom.

R ⁴ is preferably a hydrogen atom, an alkyl group, an aryl group, an aromatic heterocyclic group, or a ring formed by linking with R ⁵ , more preferably a hydrogen atom or an alkyl group, still more preferably a hydrogen atom. It is.

R ⁵ is preferably a hydrogen atom, an alkyl group, an aryl group, an aromatic heterocyclic group, or a ring formed by linking with R ⁴ , more preferably an alkyl group (preferably an alkyl having 2 to 20 carbon atoms). Group, more preferably a branched or cyclic alkyl group having 3 to 20 carbon atoms, still more preferably a branched or cyclic alkyl group having a quaternary carbon having 4 to 12 carbon atoms, particularly preferably a tert-butyl group. An aryl group (preferably an aryl group having a substituent in the o-position, more preferably an alkyl-substituted phenyl group having a substituent in the o-position having 7 to 30 carbon atoms, still more preferably a 2,6-dimethyl-substituted phenyl Group, particularly preferably 2,4,6-trimethylphenyl group.), Particularly preferably tert-butyl group, 2,4,6-trimethylphenyl group, most preferred. Or a tert-butyl group.

X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. Examples of the substituent represented by R ^Y1 include an alkyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 8 carbon atoms. For example, methyl, ethyl, iso- Propyl, tert-butyl, n-octyl, n-decyl, n-hexadecyl, cyclopropyl, cyclopentyl, cyclohexyl, etc.), an alkenyl group (preferably having 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms). Particularly preferably, it has 2 to 8 carbon atoms, and examples thereof include vinyl, allyl, 2-butenyl, 3-pentenyl and the like, and an alkynyl group (preferably 2 to 20 carbon atoms, more preferably 2 to 12 carbon atoms). Particularly preferably, it has 2 to 8 carbon atoms, and examples thereof include propargyl and 3-pentynyl), an aryl group (preferably A prime number of 6-30, more preferably a carbon number of 6-20, particularly preferably a carbon number of 6-12, for example, phenyl, p-methylphenyl, naphthyl, etc.), an acyl group (preferably a carbon number of 1 20, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as acetyl, benzoyl, formyl, pivaloyl, etc.), an alkoxycarbonyl group (preferably having 2 to 20 carbon atoms, and more). Preferably it has 2 to 16 carbon atoms, particularly preferably 2 to 12 carbon atoms, and examples thereof include methoxycarbonyl, ethoxycarbonyl and the like, and an aryloxycarbonyl group (preferably 7 to 20 carbon atoms, more preferably carbon atoms). 7 to 16, particularly preferably 7 to 10 carbon atoms, such as phenyloxycarbonyl .), A sulfamoyl group (preferably having 0 to 20 carbon atoms, more preferably 0 to 16 carbon atoms, particularly preferably having a carbon number of 0 to 12

Examples thereof include sulfamoyl, methylsulfamoyl, dimethylsulfamoyl, phenylsulfamoyl and the like. ), A carbamoyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, and examples thereof include carbamoyl, methylcarbamoyl, diethylcarbamoyl, and phenylcarbamoyl). A sulfonyl group (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as mesyl, tosyl, etc.), a sulfinyl group (preferably having a carbon number). 1 to 20, more preferably 1 to 16 carbon atoms, particularly preferably 1 to 12 carbon atoms, such as methanesulfinyl, benzenesulfinyl, etc.), heterocyclic groups (preferably 1 to 20 carbon atoms, more Preferably it is C1-C12, and as a hetero atom, for example, a nitrogen atom, an oxygen atom, a sulfur atom Specifically, for example imidazolyl, pyridyl, furyl, piperidyl, morpholino, benzoxazolyl, benzimidazolyl, such as benzothiazolyl and the like.) And the like. These substituents may be further substituted. Moreover, when there are two or more substituents, they may be the same or different. If possible, they may be linked to form a ring.

The substituent represented by R ^Y1 is preferably an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, more preferably an alkyl group, an aryl group or an aromatic heterocyclic group, still more preferably Is an alkyl group or an aryl group.

X is preferably an oxygen atom or N—R ^Y1 , more preferably an oxygen atom.

  L represents a linking group of a conjugated bond. The linking group represented by L is preferably a conjugated bond linking group formed of C, N, O, S, Se, Te, Si, Ge or the like, more preferably alkenylene, alkynylene, arylene, divalent. Of the aromatic heterocycle (preferably an aromatic heterocycle formed from azine, azole, thiophene, furan ring) and a combination of N and a combination thereof, more preferably alkenylene, arylene, divalent And a group consisting of a combination of N and these, and particularly preferably a group consisting of a combination of alkenylene and arylene having 6 to 30 carbon atoms or a divalent aromatic heterocyclic ring having 2 to 30 carbon atoms. And most preferred is a group comprising a combination of alkenylene and arylene having 6 to 30 carbon atoms. Specific examples of the linking group represented by L include the following.

The linking group represented by L may have a substituent, and examples of the substituent include those exemplified as the substituents represented by R ^{1 to} R ⁵ . The substituent for L is preferably an alkyl group, alkenyl group, alkynyl group, aryl group, alkoxy group, aryloxy group, acyl group, halogen atom, cyano group, heterocyclic group, silyl group, more preferably an alkyl group. , Alkenyl group, alkynyl group, aryl group, alkoxy group, aryloxy group, halogen atom, cyano group, aromatic heterocyclic group, more preferably alkyl group, aryl group, alkoxy group, aryloxy group, aromatic Heterocyclic group.

R ^x and R ^y may be the same or different from each other, and each represents a hydrogen atom or a substituent, and at least one represents an electron-withdrawing group. R ^x and R ^y may be linked to form a ring.

As the substituents represented by R ^x and R ^y , those exemplified as the substituents of R ^{1 to} R ⁵ can be applied. The substituents represented by R ^x and R ^y are preferably alkyl groups, alkenyl groups, aryl groups, alkoxy groups, aryloxy groups, carbonyl groups, thiocarbonyl groups, oxycarbonyl groups, acylamino groups, carbamoyl groups, sulfonylamino groups. Group, sulfamoyl group, sulfonyl group, sulfinyl group, phosphoryl group, imino group, cyano group, halogen atom, silyl group, aromatic heterocyclic group, more preferably Hammett's σp value (sigma para value) is 0.2 or more And more preferably an aryl group, aromatic heterocyclic group, cyano group, carbonyl group, thiocarbonyl group, oxycarbonyl group, carbamoyl group, sulfamoyl group, sulfonyl group, imino group, halogen atom and R der that ^x and R ^y linked to form a ring electron withdrawing group , Particularly preferably obtained by forming an aromatic heterocyclic group, a carbonyl group, a cyano group, an imino group, and of R ^x and R ^y are joining the ring electron withdrawing groups, and most preferably a cyano group, and R ^{x Ry} is linked to form an electron-withdrawing group ring, and ^Rx and ^Ry are linked to form an electron-withdrawing group ring.

  The compound represented by the general formula (A) is more preferably a compound represented by the general formula (I), in which Rx and Ry in the general formula (A) are linked to form a ring.

The general formula (I) will be described below. Z ¹ represents an atomic group necessary for forming a 5-membered ring or a 6-membered ring, and the ring formed is preferably a merocyanine dye which is usually used as an acidic nucleus. Specific examples thereof include the following: Can be mentioned.

(A) 1,3-dicarbonyl nucleus: For example, 1,3-indandione nucleus, 1,3-cyclohexanedione, 5,5-dimethyl-1,3-cyclohexanedione, 1,3-dioxane-4, 6- Zeon etc.
(B) pyrazolinone nucleus: for example 1-phenyl-2-pyrazolin-5-one, 3-methyl-1-phenyl-2-pyrazolin-5-one, 1- (2-benzothiazoyl) -3-methyl-2 -Pyrazolin-5-one and the like.
(C) Isoxazolinone nucleus: For example, 3-phenyl-2-isoxazolin-5-one, 3-methyl-2-isoxazolin-5-one and the like.
(D) Oxindole nucleus: For example, 1-alkyl-2,3-dihydro-2-oxindole and the like.
(E) 2,4,6-triketohexahydropyrimidine nucleus: for example, barbituric acid or 2-thiobarbituric acid and its derivatives. Examples of the derivatives include 1-alkyl derivatives such as 1-methyl and 1-ethyl, 1,3-dialkyl derivatives such as 1,3-dimethyl, 1,3-diethyl and 1,3-dibutyl, 1,3-diphenyl, 1,3-diaryl compounds such as 1,3-di (p-chlorophenyl), 1,3-di (p-ethoxycarbonylphenyl), 1-alkyl-1-aryl compounds such as 1-ethyl-3-phenyl, 1,3-di (2-pyridyl) 1,3-diheterocyclic substituents and the like.

(F) 2-thio-2,4-thiazolidinedione nucleus: for example, rhodanine and its derivatives. Examples of the derivatives include 3-alkylrhodanine such as 3-methylrhodanine, 3-ethylrhodanine and 3-allylrhodanine, 3-arylrhodanine such as 3-phenylrhodanine, and 3- (2-pyridyl) rhodanine. And the like.
(G) 2-thio-2,4-oxazolidinedione (2-thio-2,4- (3H, 5H) -oxazoledione nucleus: for example, 3-ethyl-2-thio-2,4-oxazolidinedione and the like.
(H) Tianaphthenone nucleus: For example, 3 (2H) -thianaphthenone-1, 1-dioxide and the like.
(I) 2-thio-2,5-thiozolidinedione nucleus: For example, 3-ethyl-2-thio-2,5-thiazolidinedione and the like.
(J) 2,4-thiozolidinedione nucleus: for example 2,4-thiazolidinedione, 3-ethyl-2,4-thiazolidinedione, 3-phenyl-2,4-thiazolidinedione, etc. (k) thiazoline-4- On nucleus: For example, 4-thiazolinone, 2-ethyl-4-thiazolinone and the like.
(L) 4-thiazolidinone nucleus: for example, 2-ethylmercapto-5-thiazoline-4-one, 2-alkylphenylamino-5-thiazoline-4-one, and the like.
(M) 2,4-imidazolidinedione (hydantoin) nucleus: for example, 2,4-imidazolidinedione, 3-ethyl-2,4-imidazolidinedione and the like.
(N) 2-thio-2,4-imidazolidinedione (2-thiohydantoin) nucleus: for example 2-thio-2,4-imidazolidinedione, 3-ethyl-2-thio-2, 4-imidazolidinedione Such.
(O) Imidazolin-5-one nucleus: For example, 2-propylmercapto-2-imidazolin-5-one and the like.
(P) 3,5-pyrazolidinedione nucleus: for example, 1,2-diphenyl-3,5-pyrazolidinedione, 1,2-dimethyl-3,5-pyrazolidinedione and the like.
(Q) Benzothiophen-3-one nucleus: for example, benzothiophen-3-one, oxobenzothiophen-3-one, dioxobenzothiophen-3-one and the like.
(R) Indanone nucleus: For example, 1-indanone, 3-phenyl-1-indanone, 3-methyl-1-indanone, 3,3-diphenyl-1-indanone, 3,3-dimethyl-1-indanone and the like.

The ring formed by Z ¹ is preferably 1,3-dicarbonyl nucleus, pyrazolinone nucleus, 2,4,6-triketohexahydropyrimidine nucleus (including thioketone body), 2-thio-2,4-thiazolidinedione Nucleus, 2-thio-2, 4-oxazolidinedione nucleus, 2-thio-2, 5-thiazolidinedione nucleus, 2,4-thiazolidinedione nucleus, 2,4-imidazolidinedione nucleus, 2-thio-2, 4 -Imidazolidinedione nucleus, 2-imidazolin-5-one nucleus, 3,5-pyrazolidinedione nucleus, benzothiophen-3-one nucleus, indanone nucleus, more preferably 1,3-dicarbonyl nucleus, 4,6-triketohexahydropyrimidine nucleus (including thioketone body), 3,5-pyrazolidinedione nucleus, benzothiophen-3-one nucleus, indanone nucleus, Preferably a 1,3-dicarbonyl nucleus or a 2,4,6-triketohexahydropyrimidine nucleus (including a thioketone form), most preferably 1,3-indanedione nucleus.

Among the compounds represented by the general formula (I), a compound represented by the general formula (II) is preferable. In the formula (II), R ¹ , R ² , R ³ , R ⁴ , R ⁵ and X have the same meanings as those in the general formula (I), and preferred ranges are also the same. R ³¹ , R ³² , R ³³ and R ³⁴ each represent a hydrogen atom or a substituent. As the substituents represented by R ³¹ to R ³⁴ , for example, those exemplified as the substituents for R ^{1 to} R ⁵ can be applied. Further, R ³¹ and R ¹ , R ³⁴ and R ² may be connected to each other to form a ring (5- to 6-membered ring). Z ₂ represents an atomic group necessary for forming a 5- to 6-membered ring.

The ring formed by Z ² has a 1,3-dicarbonyl structure in the ring formed by Z ^1. For example, 1,3-cyclopentanedione, 1,3-cyclohexane And dione, 1,3-indandione, 3,5-pyrazolidinedione, 2,4,6-triketohexahydropyrimidine nucleus, etc., preferably 1,3-indandione, 3,5-pyrazo Lysine dione, barbituric acid or 2-thiobarbituric acid and derivatives thereof, more preferably 1,3-indandione, 1,2-diaryl-3,5-pyrazolidinedione, still more preferably 1,3- Indandione and 1,2-diphenyl-3,5-pyrazolidinedione are preferable, and 1,3-indandione is particularly preferable.
The ring formed by Z ² may have a substituent, and examples of the substituent include those exemplified as the substituents of R ^{1 to} R ⁵ . In addition, substituents may be connected to form a ring.

L ₂₁ and L ₂₂ may be the same or different from each other, each a methine group, a substituted methine group or a nitrogen atom, also via the substituent of the substituted methine group at L ₂₁ or L ₂₂ each other or L ₂₁ and L ₂₂ may be linked to form a 4- to 6-membered ring. Further, when possible, L ₂₁ and L ₂₂ may be linked to R ³ , R ³¹ or R ³³ to form a ring. As the substituent of the substituted methine group, those exemplified as the substituents represented by R ^{1 to} R ⁵ can be applied, and preferably an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group. A group, a cyano group and a halogen atom, more preferably an alkyl group and an alkoxy group, still more preferably a lower alkyl group (preferably having 1 to 4 carbon atoms). L ₂₁ and L ₂₂ are preferably an unsubstituted methine group, an alkyl-substituted methine group, or an alkoxy-substituted methine group, more preferably an unsubstituted methine group, or L ₂₂ is linked to R ³¹ or R ³³ to form 5 or 6 members. A ring is formed, and an unsubstituted methine group is more preferable. n represents an integer of 0 to 3, preferably 0, 1 or 2, more preferably 0 or 1, and still more preferably 1.

  The compound represented by the general formula (A), the general formula (I), and the general formula (II) (the color conversion material of the present invention) may be a low molecule, and the residue is connected to the polymer main chain. A high molecular weight compound (preferably a mass average molecular weight of 1,000 to 5,000,000, more preferably 5,000 to 2,000,000, still more preferably 10,000 to 1,000,000), or a high molecular weight compound having a compound represented by formula (I) in the main chain (preferably The weight average molecular weight may be 1,000 to 5,000,000, more preferably 5,000 to 2,000,000, and still more preferably 10,000 to 1,000,000. In the case of a high molecular weight compound, it may be a homopolymer, may be a copolymer with another polymer, and if it is a copolymer, it may be a random copolymer or a block copolymer. There may be. The color conversion material of the present invention is preferably a low molecular weight compound. The color conversion material of the present invention may be contained in a state in which a metal chelate is formed.

  Specific examples of the color conversion material of the present invention include the following, but the present invention is not limited thereto. Note that the color conversion material of the present invention may be one in which a tautomer or metal complex is formed.

  The color conversion layer containing the color conversion (light-emitting) material of the present invention preferably contains 0.1% to 95% by mass of the color conversion material in the material constituting the color conversion layer, and 0.5% by mass. The content is more preferably from 50% by mass to 50% by mass, and particularly preferably from 1% by mass to 10% by mass. The color conversion layer is mainly composed of a matrix material other than the color conversion material, but the color conversion layer can appropriately contain a known material in addition to the color conversion (light-emitting) material and the matrix material.

  Other materials used for the color conversion film of the present invention will be described. The color conversion material used in the present invention is preferably an organic fluorescent dye, and emits different visible light by absorbing light in the near ultraviolet region or visible region, particularly light in the blue or blue-green region, emitted from the light emitter. Is. When an organic light-emitting element that emits light in the blue or blue-green region is used as the light source, if light from the element is passed through a simple red filter to obtain light in the red region, the light in the red region originally has little light. Therefore, the output light becomes extremely dark. Therefore, by converting the light in the blue or blue-green region from the element into the light in the red region by the fluorescent dye, the light in the red region can be output with sufficient intensity.

  On the other hand, the light in the green region may be output after the light from the element is converted into the light in the green region by another organic fluorescent dye, similarly to the light in the red region. Alternatively, if the light emission of the element sufficiently includes light in the green region, the light from the element may simply be output through the green filter.

  Furthermore, regarding the light in the blue region, the light from the organic light emitting element may be converted and output using a fluorescent dye, but more preferably, the light from the organic light emitting element is output through a simple blue filter. Let

  In addition to the compounds of the present invention, for example, rhodamine B, rhodamine 6G, rhodamine 3B, rhodamine 101, rhodamine 110 may be used as the fluorescent dye that absorbs light in the blue to blue-green region and emits red region fluorescence. , Sulforhodamine, basic violet 11, basic red 2 and other rhodamine dyes, cyanine dyes, 1-ethyl-2- [4- (p-dimethylaminophenyl) -1,3-butadienyl] -pyridinium perchlorate ( Examples thereof include pyridine dyes such as pyridine 1) or oxazine dyes. Furthermore, various dyes (direct dyes, acid dyes, basic dyes, disperse dyes, etc.) can be used if they are fluorescent.

  Examples of fluorescent dyes that absorb light in the blue or blue-green region emitted from the light emitter and emit fluorescence in the green region include 3- (2′-benzothiazolyl) -7-diethylaminocoumarin (coumarin 6) and 3- (2 '-Benzimidazolyl) -7-N, N-diethylaminocoumarin (coumarin 7), 3- (2'-N-methylbenzimidazolyl) -7-N, N-diethylaminocoumarin (coumarin 30), 2, 3, 5, 6 -1H, 4H-tetrahydro-8-trifluoromethylquinolidine (9,9a, 1-gh) coumarin (coumarin 153) and other coumarin dyes, or basic yellow 51 which is a coumarin dye dye, and solvent yellow 11 And naphthalimide dyes such as Solvent Yellow 116. Furthermore, various dyes (direct dyes, acid dyes, basic dyes, disperse dyes, etc.) can be used if they are fluorescent.

  The organic fluorescent dye used in the present invention is a polymethacrylate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer resin, alkyd resin, aromatic sulfonamide resin, urea resin, melamine resin, benzoguanamine resin, and these resins. An organic fluorescent pigment may be obtained by kneading into a mixture or the like in advance to obtain a pigment. In addition, these organic fluorescent dyes and organic fluorescent pigments (in the present specification, the above two are collectively referred to as organic fluorescent dyes) may be used alone, or two or more of them may be used to adjust the hue of fluorescence. May be used in combination. The organic fluorescent dye used in the present invention is contained in an amount of 0.01 to 10% by mass, more preferably 0.1 to 5% by mass, based on the mass of the conversion film, with respect to the color conversion film. If the content of the organic fluorescent dye is less than 0.01% by mass, sufficient wavelength conversion cannot be performed, or if the content exceeds 10%, the color conversion efficiency is improved by the effect of density quenching or the like. Bring about a decline.

  The matrix material will be described. The matrix material used for the color conversion film of the present invention is a photocurable or photothermal combination curable resin (resist), which is subjected to light and / or heat treatment to generate radical species or ionic species to be polymerized or crosslinked, Insoluble and infusible. In order to perform patterning of the color conversion film, it is desirable that the photocurable or photothermal combination type curable resin is soluble in an organic solvent or an alkaline solution in an unexposed state.

  Specifically, the photocurable or photothermal combination type curable resin comprises (1) a composition comprising an acrylic polyfunctional monomer and oligomer having a plurality of acryloyl groups and methacryloyl groups, and photo or thermal polymerization initiators, 2) a composition comprising a polyvinylcinnamic acid ester and a sensitizer, (3) a composition comprising a chain or cyclic olefin and bisazide, and (4) a composition comprising a monomer having an epoxy group and an acid generator. Etc. In particular, the composition comprising the acrylic polyfunctional monomer and oligomer (1) and a photo or thermal polymerization initiator can be patterned with high definition and has high reliability such as solvent resistance and heat resistance. Is preferable. As described above, the matrix material is formed by applying light and / or heat to the photocurable or photothermal combination type curable resin.

  In the present specification, the term “unsaturated functional group” refers to all of the polymerization initiators added in addition to the carbon-carbon double bond in the photocurable or photothermal combination type curable resin. Includes double and triple bonds.

  As the acrylic polyfunctional monomer that can be used in the present invention, for example, “V259PA / P5” (trade name, Nippon Steel Chemical Industry Co., Ltd.) can be used.

  The photopolymerization initiator that can be used in the present invention is preferably one that initiates polymerization by light having a wavelength that is not absorbed by the contained fluorescent conversion dye.

  In the light emitting layer of the present invention, when the resin itself in the photocurable or photothermal combination type curable resin can be polymerized by light or heat, do not add a photopolymerization initiator and a thermal polymerization initiator. Is also possible. Furthermore, when necessary for adjusting the unsaturated functional group concentration of the matrix resin, it is possible to add an additive that promotes the photocrosslinking (polymerization) reaction or the thermal polymerization reaction.

  The matrix material is polymerized by applying a solution or dispersion of the resin on a supporting substrate to form a resin layer, and exposing a desired portion of the photocurable or photothermal combination type curable resin. It is formed. As means for adjusting the unsaturated functional group concentration of the matrix material, the exposure conditions (irradiation light intensity, irradiation amount, irradiation wavelength) at the time of formation are important. The irradiation wavelength depends on the photopolymerization initiator contained in the photocurable or photothermal combination curable resin or the resin itself, and a wavelength suitable for the initiation of polymerization is selected. Further, the polymerization of the resin may be further promoted by performing a baking treatment described in detail below.

  Furthermore, before performing exposure of this resin, forming the transparent resin film which interrupts | blocks oxygen on the outer resin layer upper surface is also mentioned. This technique is particularly effective when the color conversion filter is thicker than 5 μm.

As described above, patterning is performed after exposing a desired portion to insolubilize the photocurable or photothermal combination type curable resin. The patterning can be performed by a conventional method in which an unexposed portion of the resin is removed using an organic solvent or an alkaline solution in which the resin is dissolved or dispersed.
The patterned matrix material may be further heated (baked) to further polymerize the matrix resin. This baking treatment is more preferable because the effect of volatilizing and removing unreacted low molecular weight components such as monomers can be expected in addition to the polymerization reaction promoting effect. This change in baking conditions (heating method / heating temperature / heating time) is useful as a means for adjusting the unsaturated functional group concentration of the matrix resin. The baking process is performed by using a conventional heating means such as a resistance wire heater or an infrared lamp.

  Further, an organic low molecular weight material may be used as the matrix material. In this case, as a method for forming the color conversion film, for example, a method of co-evaporating the matrix material and the color conversion light emitting material can be mentioned. Further, in patterning, a color conversion film can be formed at a desired position using a mask at the time of co-evaporation.

  The color conversion film of the present invention may have a protective layer, which protects the light emitting layer and flattens the upper surface of the color conversion filter.

  Further, an insulating inorganic oxide layer such as silicon oxide or aluminum oxide may be formed on the upper surface of the protective layer for the purpose of improving the gas barrier property of the protective layer.

The color conversion film of the present invention may be formed on a metal electrode or a transparent support substrate. The transparent support substrate should be able to withstand the conditions (solvent, temperature, etc.) used for forming the color conversion film and the protective layer, and is preferably excellent in dimensional stability.
The solvent used in the production of the color conversion film (especially the spin coating method) may be any organic fluorescent dye and matrix material, as long as it can dissolve or disperse the resin in the organic fluorescent pigment. Absent. Examples of such a solvent include ethanol; dichloromethane; 1,2-dichloroethane; chloroform; acetone; cyclohexanone; toluene; benzene; xylene; N, N-dimethylformamide; N-methylpyrrolidone; 2, 2-diethoxyethane; ethylene glycol monomethyl ether (methyl cellosolve); ethylene glycol monoethyl ether (ethyl cellosolve); ethylene glycol monoethyl ether acetate (ethyl cellosolve acetate) and the like can be used. These solvents may be used alone or in combination of two or more. The amount of the solvent is appropriately added according to the method for producing the color conversion film, and an appropriate viscosity or solid content concentration is adjusted. In addition, when dispersing the organic fluorescent pigment, an appropriate dispersant and surfactant may be added.

  The color conversion filter forms the color conversion filter of the present invention by forming one or more types of color conversion films in a desired pattern on the above-described support substrate. The color conversion film is coated with a composition containing the above-described fluorescence conversion dye and resist on a support substrate, exposed through a mask for forming a desired pattern, patterned, and baked as necessary. Created with desired pattern. When creating a color display, it is preferable to form three color conversion films of red, green and blue. When a light emitting body that emits blue or blue-green is used, as described above, it is also possible to form a red and green color conversion film and a blue filter layer. In this specification, a color conversion film and a filter layer having a desired pattern are collectively referred to as a color conversion pattern layer.

  The desired pattern of the light emitting layer depends on the application used. A set of red, green and blue rectangular or circular areas may be formed on the entire surface of the support substrate. Alternatively, red, green and blue adjacent and parallel stripes (areas having a desired width and a length corresponding to the length of the support substrate 1) are formed as a set and formed on the entire support substrate. May be. More specific color conversion films can be arranged (numerically and in area) than the color conversion films of other colors.

  The color conversion type color display of the present invention has the above-described color conversion filter and a light emitting body provided on the protective layer side of the filter. The light emitter may emit light in the near ultraviolet to visible region, preferably in the blue to blue-green region. In the present invention, an organic EL light emitter is preferably used as the light emitter.

  The organic EL illuminant used in the color conversion type color display of the present invention is configured to make light in the near-ultraviolet to visible region, preferably blue to blue-green region incident on the fluorescent color conversion filter, and to convert the fluorescent color. It is converted into visible light having a different wavelength by a filter and output.

  The organic EL light emitter has a structure in which an organic light emitting layer is held between a pair of electrodes, and a hole injection layer or an electron injection layer is interposed as required. Specifically, those having the following layer structure are employed.

  Known materials are used as the material for each of the above layers. In order to obtain blue to blue-green light emission as the organic light emitting layer, for example, a fluorescent whitening agent such as benzothiazole, benzimidazole, benzoxazole, metal chelated oxonium compound, styrylbenzene compound, aromatic Those emitting light from a triplet excited state such as those emitting light from a singlet excited state such as dimethylidin compounds and condensed aromatic ring compounds, and complex compounds containing transition metals such as iridium, platinum, rhenium and osmium are preferably used.

  In the organic EL light emitting device driving method, the anode and cathode patterns may be formed in parallel stripes so as to intersect each other. In that case, the organic light emitting device of the present invention can perform matrix driving, that is, when a voltage is applied to a specific stripe of the anode and a specific stripe of the cathode, the stripes are formed in the organic light emitting layer. The part where the crosses emits light. Then, by applying a voltage to the selected stripe, only the portion where the specific fluorescent color conversion film and / or filter layer is located can emit light.

  Alternatively, the anode may be a uniform planar electrode having no stripe pattern, and the cathode may be patterned so as to correspond to each pixel. In that case, a so-called active matrix drive can be performed by providing a switching element corresponding to each pixel.

[Example]
Examples to which the present invention is applied will be described below.

Preparation and Evaluation of Red Light-Emitting Color Conversion Film As a binder, Fuji Hunt Electronics Technology's negative acrylic photoresist CT and Kodak's Rhodamine B as a green light-absorbing fluorescent material are dissolved in ethanol and then absorbed in blue light. As a fluorescent pigment, Sinlohi color FA45J was added and dispersed by stirring using a homogenizer. The obtained light conversion material was applied to a thickness of 10 μm by spin coating to form a color conversion layer. A red light emitting color conversion film was prepared in the same manner as described above using the compound D-20 of the present invention instead of Rhodamine B.
These two color conversion films were irradiated with blue light of λmax = 470 nm, and the conversion efficiency was measured.
Furthermore, the blue light was continuously irradiated for 10 hours, and the retention rate of the red light emission intensity after irradiation was measured.

  It can be seen from Table 1 that the color conversion film using the compound of the present invention is excellent in conversion efficiency and durability.

  The present invention can be used for flat panel displays, backlights, illumination light sources, display elements, electrophotography, organic semiconductor lasers, recording light sources, exposure light sources, reading light sources, signs, signboards, and optical communication devices.

1 is a schematic cross-sectional view showing a color conversion filter of the present invention. 1 is a schematic cross-sectional view showing a configuration example of a color conversion system color display using a color conversion filter of the present invention. It is the cross-sectional schematic which shows the other structural example of the color conversion system color display using the color conversion filter of this invention. It is the cross-sectional schematic which shows another structural example of the color conversion system color display using the color conversion filter of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transparent support substrate 2 Red conversion pattern layer 3 Green conversion pattern layer 4 Blue filter layer 5 Protective layer 6 Transparent electrode 7 Hole injection layer 8 Hole transport layer 9 Organic light emitting layer 10 Electron injection layer 11 Electrode 12 Electron transport color Conversion pattern layer 13 Blue light emitting layer

Claims (9)

A color conversion film containing at least one color conversion material represented by the general formula (A) and emitting light by absorbing light emitted from other than the color conversion material.

In general formula (A), R ¹ , R ² , R ³ , R ⁴ , and R ⁵ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. L represents a linking group comprising a conjugated bond. R ^x and R ^y each represent a hydrogen atom or a substituent, and at least one of them represents an electron withdrawing group.   The color conversion film includes at least one light emitting layer that emits light by absorbing light emitted from other than the color conversion film, and the light emitting layer contains a compound represented by the general formula (A). The color conversion film according to claim 1. The color conversion film according to claim 1, wherein the general formula (A) is represented by the general formula (I).
Formula (I)

In the formula, R ¹ , R ² , R ³ , R ⁴ and R ⁵ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. L represents a linking group comprising a conjugated bond. Z ¹ represents an atomic group necessary for forming a 5- to 6-membered ring. The color conversion film according to claim 1, wherein the general formula (A) is represented by the general formula (II).
Formula (II)

In the formula, R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ³¹ , R ³² , R ³³ and R ³⁴ each represent a hydrogen atom or a substituent. X represents an oxygen atom, a sulfur atom, or N—R ^Y1 , and R ^Y1 represents a hydrogen atom or a substituent. Z ² represents an atomic group necessary for forming a 5- to 6-membered ring. L ₂₁ and L ₂₂ may be the same or different from each other, and each represents a methine group, a substituted methine group or a nitrogen atom. n represents an integer of 0 to 3.   The color conversion film according to claim 1, further comprising at least one matrix material.   6. The matrix material has at least a photo-curing and / or thermo-curing and / or photo-heat combined curable resin that undergoes a crosslinking reaction by light and / or heat to cure. The color conversion film described in 1.   The color conversion film according to claim 5 or 6, wherein the matrix material has at least a matrix material mixed by a co-evaporation method.   A color conversion display comprising the color conversion film according to claim 1 and a light emitter on the color conversion film.   The light emitter on the color conversion film according to claim 8 is formed by sequentially laminating an electrically independent transparent electrode layer, a light emitting layer containing a light emitting material, and a second electrode layer forming a plurality of pixels. 9. An electrical signal is input to the pixel to cause the pixel to emit light, the emitted light enters the color conversion film of the light emitting portion, and the color conversion material in the color conversion film emits fluorescence. The color conversion display described in 1.

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