JP2011023323A - Color film for organic electroluminescence device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve blue color purity, small decrease in luminance (PL intensity) when used in an organic EL element, particularly a blue organic EL element, and excellent in haze, visible light average transmittance, heat resistance, and heat and humidity resistance. A color film for an organic EL device is provided.
SOLUTION: A color film for an organic EL device having a pressure-sensitive adhesive layer (A) on a transparent substrate film (A), wherein the pressure-sensitive adhesive layer (A) has a mass average molecular weight of 400,000 to 2.5 million. Cyanine dye (B), azaporphyrin dye (C) and rhodamine dye (D) having a maximum absorption at a wavelength of 510 to 610 nm with respect to 100 parts by mass of (meth) acrylic acid ester copolymer (A) For organic EL elements, comprising 0.05 to 1.5 parts by mass of at least one dye selected from 1 and 0.02 to 1.0 parts by mass of an isocyanate curing agent (E) Color film.
[Selection figure] None

Description

  The present invention relates to a color film for an organic electroluminescence device, and more specifically, an organic compound having improved blue color purity, small decrease in luminance (PL intensity), excellent haze, visible light average transmittance, heat resistance, and heat and humidity resistance. The present invention relates to a color film for an electroluminescence element.

  An organic electroluminescence element (hereinafter sometimes referred to as an organic EL element) has a structure in which a thin organic layer containing a fluorescent organic compound is sandwiched between a cathode forming an electron injection electrode and an anode forming a hole injection electrode. And excitons (excitons) by injecting electrons and holes into the organic layer and recombining them, and display using the emission of light (fluorescence / phosphorescence) when the excitons are deactivated It is a display element to be performed.

By the way, as such an organic EL element, for example, in an organic electroluminescence element having at least a hole injection layer and a light emitting layer between electrodes composed of a pair of anode and cathode, at least one of which is transparent or translucent, The hole injection layer is in contact with the anode, and the electrical conductivity of the portion of the hole injection layer that is in contact with the anode is lower than the conductivity of the portion of the hole injection layer that is not in contact with the anode. An element is disclosed (for example, see Patent Document 1).
However, the organic EL element described in the patent, particularly the one using a blue organic EL element, has a problem that the durability is high but the blue color purity is low.

On the other hand, in an organic electroluminescent device in which a transparent electrode in contact with the substrate, an organic light emitting layer, and a counter electrode for the transparent electrode are sequentially laminated on the transparent substrate, a color filter is provided outside the transparent substrate. An electroluminescence element is disclosed (for example, see Patent Document 2).
However, the use of a color filter as in this patent increases the blue color purity, but the color filter absorbs light emission energy, so that the luminance (PL intensity) is significantly reduced.

JP 2002-100480 A Japanese Patent Laid-Open No. 6-132081

  The object of the present invention is to improve the blue color purity and decrease the luminance (PL intensity) when used in an organic EL element, particularly a blue organic EL element, haze, visible light average transmittance, heat resistance, heat and humidity resistance. An object of the present invention is to provide a color film for an organic EL device which is excellent in the above.

The present invention is as follows.
1. A color film for an organic electroluminescence device having a pressure-sensitive adhesive layer (A) on a transparent substrate film (A),
The cyanine dye having a maximum absorption at a wavelength of 510 to 610 nm with respect to 100 parts by mass of the (meth) acrylic acid ester copolymer (A) having a mass average molecular weight of 400,000 to 2.5 million. 0.05 to 1.5 parts by mass of at least one dye selected from (B), azaporphyrin dye (C) and rhodamine dye (D), and 0.02 to isocyanate curing agent (E) The color film for organic electroluminescent elements characterized by containing 1.0 mass part.
2. 2. The color film for an organic electroluminescence device as described in 1 above, wherein the glass transition temperature of the (meth) acrylic acid ester copolymer (A) is 0 ° C. or lower.
3. Talc having a pH of 7.5 to 8.0 with respect to 100 parts by mass of the (meth) acrylic acid ester copolymer (A) having a mass average molecular weight of 400,000 to 2.5 million. The color film for organic electroluminescent elements according to 1 above, further comprising 0.1 to 5.0 parts by mass of a containing stabilizer (F).
4). 4. The color film for an organic electroluminescence device according to 3 above, wherein the talc-containing stabilizer (F) contains an alkylamine compound.
5. 5. The color film for organic electroluminescent elements as described in 3 or 4 above, wherein the talc content in the talc-containing stabilizer (F) is 60 to 80% by mass.
6). 2. The color film for an organic electroluminescent element according to 1 above, wherein the transparent substrate film (a) is a biaxially stretched polyethylene terephthalate film.
7). 7. The color film for an organic electroluminescence device according to any one of 1 to 6, which is used for a blue organic electroluminescence device.

  The color film for an organic EL device of the present invention has a pressure-sensitive adhesive layer (A) in which a specific dye and an isocyanate curing agent are mixed in a specific amount in a specific binder on a transparent substrate film (A). . According to this configuration, when used in an organic EL element, particularly a blue organic EL element, the blue color purity is improved, the decrease in luminance (PL intensity) is small, haze, visible light average transmittance, heat resistance, and heat and humidity resistance. An excellent color film for organic EL devices can be provided.

Hereinafter, the present invention will be described in more detail.
Transparent base film (A)
There is no restriction | limiting in particular as the transparent base film (a) used by this invention, From the various transparent plastic films, it can select suitably according to a condition and can be used. Examples of the transparent plastic film (a) include polyolefin resins such as polyethylene, polypropylene, poly-4-methylpentene-1, and polybutene-1, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polycarbonate resins, and polychlorinated resins. Vinyl resins, polyphenylene sulfide resins, polyether sulfone resins, polyethylene sulfide resins, polyphenylene ether resins, styrene resins, acrylic resins, polyamide resins, polyimide resins, cellulose resins such as cellulose acetate, etc. The film which consists of these, these laminated films, etc. are mentioned. Among these, a biaxially stretched polyethylene terephthalate film is preferable. The biaxially stretched polyethylene terephthalate film has good mechanical strength and dimensional stability and can be adjusted to a desired thickness.
As thickness of a transparent base film, it is 10-300 micrometers, for example, Preferably it is 20-200 micrometers.
The transparent substrate film may be blended with known additives such as antioxidants and ultraviolet absorbers as desired.
Moreover, in order to improve the adhesiveness with another layer, the transparent base film can also provide an easily bonding agent layer.

Adhesive layer (I)
The pressure-sensitive adhesive layer (I) in the present invention is a cyanine having a maximum absorption at a wavelength of 510 to 610 nm with respect to 100 parts by mass of a (meth) acrylic acid ester copolymer (A) having a mass average molecular weight of 400,000 to 2.5 million. 0.05 to 1.5 parts by mass of at least one dye selected from a dye (B), an azaporphyrin dye (C), and a rhodamine dye (D), and an isocyanate curing agent (E) 0. 02-1.0 mass part is contained. Hereinafter, each component will be described.

Acrylic ester copolymer (A)
The component (A) in the present invention is a (meth) acrylic acid ester copolymer having a mass average molecular weight of 400,000 to 2.5 million.
In the present specification, “(meth) acrylic acid ester” is a term indicating an acrylic acid ester, a methacrylic acid ester, and a mixture of both.

  The (meth) acrylic acid ester copolymer as the component (A) preferably has one or more functional groups selected from a carboxyl group, a hydroxyl group, a glycidyl group, an amide group, and an N-substituted amide group. A preferred functional group is a carboxyl group. Sufficient tackiness can be imparted by the presence of such a functional group.

  As the component (A), a copolymer of (meth) acrylic acid ester having 1 to 20 carbon atoms in the alkyl moiety of the ester portion and a carboxyl group-containing monomer such as acrylic acid, methacrylic acid, and itaconic acid is used. preferable. In addition, it is preferable to further copolymerize the (meth) acrylic acid monomer which has the above-mentioned functional group except a carboxyl group. Moreover, (A) component can contain the (meth) acrylic acid monomer and other monomer which have another functional group besides the above.

  Examples of the (meth) acrylic acid ester having 1 to 20 carbon atoms in the alkyl group of the ester moiety include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, and (meth) acrylic acid. Butyl, pentyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, decyl (meth) acrylate, (meth) acryl Examples include dodecyl acid, myristyl (meth) acrylate, palmityl (meth) acrylate, and stearyl (meth) acrylate. These may be used alone or in combination of two or more.

  Examples of the (meth) acrylic acid monomer having a functional group include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, and (meth) acrylic acid. Monomers containing hydroxyl groups such as 2-hydroxybutyl, 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate; (meth) acrylamide, N-methyl (meth) acrylamide, N-ethyl ( Amide groups or N-substituted amides such as (meth) acrylamide, N-propoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, N-tert-butylacrylamide, N-octylacrylamide, N-methylol (meth) acrylamide Monomers containing groups ; (Meth) include monomers having a glycidyl group such as glycidyl acrylate. These may be used alone or in combination of two or more.

  Examples of (meth) acrylic acid monomers having other functional groups include amino group (amino) monomers such as aminomethyl (meth) acrylate, dimethylaminomethyl (meth) acrylate, dimethylaminopropyl (meth) acrylate, and vinylpyridine. , Monomers containing acetoacetyl groups such as acetoacetoxyethyl (meth) acrylate, Monomers containing tertiary amino groups such as dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate, dimethylaminopropyl (meth) acrylamide Is mentioned. These may be used alone or in combination of two or more.

  Examples of other monomers used as desired include vinyl esters such as vinyl acetate and vinyl propionate; olefins such as ethylene, propylene and isobutylene; halogenated olefins such as vinyl chloride and vinylidene chloride; styrene, Styrene monomers such as α-methylstyrene; Diene monomers such as butadiene, isoprene and chloroprene; Nitrile monomers such as acrylonitrile and methacrylonitrile; N, N-dimethylacrylamide, N, N-dimethyl And N, N-dialkyl-substituted acrylamides such as methacrylamide. These may be used alone or in combination of two or more.

  The (meth) acrylic acid ester copolymer of the component (A) is not particularly limited as to its copolymerization form, and may be any of random, block, and graft copolymers. Moreover, the (meth) acrylic ester copolymer of the component (A) may be used alone or in combination of two or more.

The component (A) in the present invention preferably has an acid value of 6.9 mgKOH / g or more and less than 7.5 mgKOH / g. Within this acid value range, the initial color change and light transmittance change amount of the dye, particularly the cyanine dye (B), are improved, and secondary aggregation at the end of blending is prevented.
A preferable acid value is 6.95-7.30 mgKOH / g, and a more preferable acid value is 6.98-7.20 mgKOH / g. The acid value can be easily adjusted by adjusting the copolymerization ratio of the acid group-containing monomer.
The acid value measurement method may be performed based on a conventional method, but may be calculated by calculation. The calculation method is known and is described in, for example, JIS K 2501.

  The component (A) of the present invention needs to have a mass average molecular weight in the range of 400,000 to 2.5 million. In the present specification, the mass average molecular weight is a value in terms of polystyrene measured by a gel permeation chromatography (GPC) method. If the mass average molecular weight is less than 400,000, the adhesiveness and durability (reliability) may be insufficient, and if it exceeds 2.5 million, the viscosity increases and causes poor coatability. The mass average molecular weight of the component (A) is preferably 600,000 to 1,800,000, more preferably 800,000 to 1,600,000.

The component (A) preferably has a glass transition temperature (Tg) of 0 ° C. or lower, and more preferably in the range of −70 ° C. to 0 ° C. When the glass transition temperature is higher than 0 ° C., tack (adhesiveness) becomes insufficient when used at a low temperature, and the viscosity is not exhibited, which is not preferable. In this specification, the glass transition temperature (Tg) indicates a calculated value or an actual measurement value obtained by a conventional method. The calculated value is the following formula:
(1 / Tg) = (W ₁ / Tg ₁ ) + (W ₂ / Tg ₂ ) +... + (W _n / Tg _n )
Can be used to calculate. In the formula, Tg represents the glass transition temperature (° C.), W ₁ , W ₂ ,..., W _n represent the mass fraction of each monomer in the monomer composition, and Tg ₁ , Tg _2, ····, Tg _n represents a glass transition temperature of the homopolymer of the corresponding monomer (° C.). In addition, what is necessary is just to employ | adopt the numerical value described in publications, such as handbook, for the glass transition temperature of a homopolymer, for example.

  The (A) component (meth) acrylic acid ester copolymer can be produced by various known methods, for example, radical polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. Can be appropriately selected. As the radical polymerization initiator, known ones such as lauroyl peroxide (LPO), benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN) and the like can be used. As the polymerization conditions, for example, in the case of solution polymerization, the reaction temperature is usually 50 to 150 ° C., and the reaction time is usually about 3 to 15 hours. As a solvent used in the polymerization, ethyl acetate, methyl ethyl ketone, toluene, hexane, acetone or the like is used. Moreover, you may use a commercially available (meth) acrylic acid ester copolymer.

Cyanine dye (B)
The cyanine dye (B) is preferably, for example, the following general formula (I).

(In the general formula (I), R ^{31 to} R ³⁵ each independently represents an alkyl group which may have a substituent, n represents an integer of 0 or more, and is usually 1 to 3. Z ¹ and Z ² are each independently an S atom, an O atom, NR ³⁶ , or CR ³⁷ R ^38. R ^{36 to} R ³⁸ are each independently an alkyl group that may be substituted, L ¹ and L ² each independently form a 5- to 7-membered ring, and preferably an aromatic ring such as a benzene ring or a pyridine ring.

Examples of the alkyl group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, tert-butyl group, sec-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n -C1-C20 alkyl groups, such as an octyl group, n-decyl group, n-dodecyl group, n-octadecyl group, are mentioned.
As the substituent, cyano group; nitro group; hydroxy group; tetrahydrofuryl group; halogen atom such as fluorine atom, chlorine atom, bromine atom; methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group , Tert-butoxy group, sec-butoxy group, n-pentyloxy group, n-octyloxy group, n-decyloxy group, etc., an alkoxy group having 1 to 10 carbon atoms; methoxymethoxy group, ethoxymethoxy group, propoxymethoxy group, Alkoxyalkoxy groups having 2 to 12 carbon atoms such as methoxyethoxy group, ethoxyethoxy group, propoxyethoxy group, methoxypropoxy group, ethoxypropoxy group, methoxybutoxy group, ethoxybutoxy group; methoxymethoxymethoxy group, methoxymethoxyethoxy group, methoxyethoxy A methoxy group, Alkoxyalkoxyalkoxy groups having 3 to 15 carbon atoms such as toxiethoxyethoxy group, ethoxymethoxymethoxy group, ethoxymethoxyethoxy group, ethoxyethoxymethoxy group, ethoxyethoxyethoxy group; allyloxy group; phenoxy group, tolyloxy group, xylyloxy group, naphthyl Aryloxy group having 6 to 12 carbon atoms such as oxy group; methylsulfonylamino group, ethylsulfonylamino group, n-propylsulfonylamino group, isopropylsulfonylamino group, n-butylsulfonylamino group, tert-butylsulfonylamino Group, sec-butylsulfonylamino group, n-pentylsulfonylamino group, n-hexylsulfonylamino group and the like alkylsulfonylamino group having 1 to 6 carbon atoms; methoxycarbonyl group, ethoxycarbonyl 2 carbon atoms such as bonyl group, n-propoxycarbonyl group, isopropoxycarbonyl group, n-butoxycarbonyl group, tert-butoxycarbonyl group, sec-butoxycarbonyl group, n-pentyloxycarbonyl group, n-hexyloxycarbonyl group To 7 alkoxycarbonyl groups; methylcarbonyloxy group, ethylcarbonyloxy group, n-propylcarbonyloxy group, isopropylcarbonyloxy group, n-butylcarbonyloxy group, tert-butylcarbonyloxy group, n-pentylcarbonyloxy group, C2-C7 alkylcarbonyloxy group such as n-hexylalkenyloxy group; methoxycarbonyloxy group, ethoxycarbonyloxy group, n-propoxycarbonyloxy group, isopropoxycarbonyloxy group C2-C7 alkoxycarbonyloxy such as xoxy group, n-butoxycarbonyloxy group, tert-butoxycarbonyloxy group, sec-butoxycarbonyloxy group, n-pentyloxycarbonyloxy group, n-hexyloxycarbonyloxy group Groups and the like.

  Specific examples of the cyanine dye include, for example, GPX-103 (maximum absorption wavelength = 518 nm), GPZ-133 (maximum absorption wavelength = 556 nm), TY-102 (maximum absorption wavelength = 588 nm), TY-235 (manufactured by ADEKA) Cyanine compounds such as maximal absorption wavelength = 552 nm) and NK9101 (maximum absorption wavelength = 542 nm) manufactured by Hayashibara Biochemical Laboratories, Inc. can be preferably used. The above is an example, and the present invention is not limited to these. Two or more cyanine dyes can be used in combination.

Azaporphyrin pigment (C)
The azaporphyrin-based dye (C) used in the present invention is not particularly limited as long as it has a maximum absorption at a wavelength of 510 to 610 nm. For example, it can be represented by the following general formula (II).

In the formula, each of X _{1 to} X ₈ independently represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxyl group, an amino group, a carboxyl group, a sulfonic acid group, an alkyl group having 20 or less carbon atoms, an alkoxy group, or a halogenoalkoxy. A group, aryloxy group, monoalkylamino group, dialkylamino group, aralkyl group, aryl group, heteroaryl group, alkylthio group, arylthio group, acyl group or alkoxycarbonyl group; R _{1 to} R ₄ each independently represents a carbon atom or a nitrogen atom. However, at least one of R _{1 to} R ₄ is a nitrogen atom, and examples thereof include a monoazaporphyrin, a diazaporphyrin, and a tetraazaporphyrin skeleton. M represents two hydrogen atoms, a divalent metal atom, a trivalent or tetravalent substituted metal atom, or an oxy metal.

Specific examples of X _{1 to} X ₈ include a hydrogen atom; a halogen atom of fluorine, chlorine, bromine, iodine; a nitro group; a cyano group; a hydroxyl group; an amino group; a carboxyl group; a sulfonic acid group; a methyl group, an ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, sec-butyl group, t-butyl group, n-pentyl group, iso-pentyl group, 2-methylbutyl group, 1-methylbutyl group, neo-pentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group, cyclo-pentyl group, n-hexyl group, 4-methylpentyl group, 3-methylpentyl group, 2-methylpentyl group, 1 -Methylpentyl group, 3,3-dimethylbutyl group, 2,3-dimethylbutyl group, 1,3-dimethylbutyl group, 2,2-dimethylbutyl group, 1,2-dimethylbutyl group, 1,1-dimethyl Butyl group, 3-ethylbutyl group, 2-ethylbutyl group, 1-ethylbutyl group, 1 , 2,2-trimethylbutyl group, 1,1,2-trimethylbutyl group, 1-ethyl-2-methylpropyl group, cyclo-hexyl group, n-heptyl group, 2-methylhexyl group, 3-methylhexyl group 4-methylhexyl group, 5-methylhexyl group, 2,4-dimethylpentyl group, n-octyl group, 2-ethylhexyl group, 2,5-dimethylhexyl group, 2,5,5-trimethylpentyl group, 2 , 4-dimethylhexyl group, 2,2,4-trimethylpentyl group, n-nonyl group, 3,5,5-trimethylhexyl group, n-decyl group, 4-ethyloctyl group, 4-ethyl-4,5 -Dimethylhexyl group, n-undecyl group, n-dodecyl group, 1,3,5,7-tetramethyloctyl group, 4-butyloctyl group, 6,6-diethyloctyl group, n-tridecyl group, 6-methyl -4-butyloctyl group, n-tetradecyl group, n-pentadecyl group, 3,5-dimethylheptyl group, 2,6-dimethyl Heptyl, 2,4-dimethylheptyl, 2,2,5,5-tetramethylhexyl, 1-cyclo-pentyl-2,2-dimethylpropyl, 1-cyclo-hexyl-2,2-dimethylpropyl A linear, branched or cyclic alkyl group having 1 to 20 carbon atoms such as a group; methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, sec-butoxy group, t-butoxy group, n-pentoxy group, iso-pentoxy group, neo-pentoxy group, n-hexyloxy group, n-dodecyloxy group, methoxyethyl group, ethoxyethyl group, iso-propyloxyethyl group, 3-methoxy An alkoxy group having 1 to 20 carbon atoms such as propyl group, 2-methoxybutyl group, methoxyethoxy group, ethoxyethoxy group, 3-methoxypropyloxy group, 3- (iso-propyloxy) propyloxy group or the like A halogenoalkoxy group in which a hydrogen atom is substituted by halogen; carbon such as phenoxy group, 2-methylphenoxy group, 4-methylphenoxy group, 4-t-butylphenoxy group, 2-methoxyphenoxy group, 4-iso-propylphenoxy group An aryloxy group having 6 to 20 carbon atoms; a monoalkylamino group having 1 to 20 carbon atoms such as a methylamino group, an ethylamino group, an n-propylamino group, an n-butylamino group and an n-hexylamino group; a dimethylamino group , Diethylamino group, di-n-propylamino group, di-n-butylamino group, N-methyl-N-cyclohexylamino group and other dialkylamino groups having 2 to 20 carbon atoms; benzyl group, nitrobenzyl group, cyanobenzyl Group, hydroxybenzyl group, methylbenzyl group, dimethylbenzyl group, trimethylbenzyl group, dichlorobenzyl group, methoxybenzyl group, etho Aralkyl groups having 7 to 20 carbon atoms such as a cibenzyl group, a trifluoromethylbenzyl group, a naphthylmethyl group, a nitronaphthylmethyl group, a cyanonaphthylmethyl group, a hydroxynaphthylmethyl group, a methylnaphthylmethyl group, a trifluoromethylnaphthylmethyl group; Phenyl group, nitrophenyl group, cyanophenyl group, hydroxyphenyl group, methylphenyl group, dimethylphenyl group, trimethylphenyl group, dichlorophenyl group, methoxyphenyl group, ethoxyphenyl group, trifluoromethylphenyl group, N, N-dimethylamino Aryl groups having 6 to 20 carbon atoms such as phenyl group, naphthyl group, nitronaphthyl group, cyanonaphthyl group, hydroxynaphthyl group, methylnaphthyl group, trifluoromethylnaphthyl group; pyrrolyl group, thienyl group, furanyl group, o Heteroaryl groups such as sazoyl group, isoxazoyl group, oxadiazoyl group, imidazoyl group, benzofuranyl group, indoyl group; methylthio group, ethylthio group, n-propylthio group, iso-propylthio group, n-butylthio group, iso-butylthio group, sec Carbon number such as -butylthio group, t-butylthio group, n-pentylthio group, iso-pentylthio group, 2-methylbutylthio group, 1-methylbutylthio group, neo-pentylthio group, 1,2-dimethylpropylthio group 1-20 alkylthio groups; phenylthio groups, 4-methylphenylthio groups, 2-methoxyphenylthio groups, 4-t-butylphenylthio groups and other arylthio groups having 6 to 20 carbon atoms; formyl group, acetyl group, ethyl Carbonyl group, n-propylcarbonyl group, iso-propylcarbonyl group, n-butylcarbonyl group, iso-butylcarbonyl 1 to C carbon atoms such as nyl group, sec-butylcarbonyl group, t-butylcarbonyl group, n-pentylcarbonyl group, iso-pentylcarbonyl group, neo-pentylcarbonyl group, 2-methylbutylcarbonyl group, nitrobenzylcarbonyl group, etc. Examples thereof include 20 acyl groups; alkoxycarbonyl groups having 2 to 20 carbon atoms such as methoxycarbonyl group, ethoxycarbonyl group, isopropyloxycarbonyl group, and 2,4-dimethylbutyloxycarbonyl group. Examples of the divalent metal represented by M include Cu (II), Zn (II), Fe (II), Co (II), Ni (II), Ru (II), Rh (II), Pd (II), Pt (II), Mn (II), Mg (II), Ti (II), Be (II), Ca (II), Ba (II), Cd (II), Hg (II), Pb (II), Sn (II), etc. are mentioned. Examples of monosubstituted trivalent metals include Al-Cl, Al-Br, Al-F, Al-I, Ga-Cl, Ga-Br, Ga-F, Ga-I, In-Cl, In-Br. , In-F, In-I , Tl-Cl, Tl-Br, Tl-F, Tl-I, Al-Cl, Al-C 6 H 5, Al-C 6 H 4 (CH 3), In-C ₆ H ₅ , In-C ₆ H ₄ (CH ₃ ), Mn (OH), Mn (OC ₆ H ₅ ) , Mn (OSi (CH ₃ ) ₃ ), Fe—Cl, Ru—Cl and the like. Examples of disubstituted four metals include CrCl ₂ , SiCl ₂ , SiBr ₂ , SiF ₂ , SiI ₂ , ZrCl ₂ , GeCl ₂ , GeBr ₂ , GeF ₂ , GeI ₂ , SnCl ₂ , SnF ₂ , SnBr ₂ , TiCl ₂ , TiBr ₂ , TiF ₂ , Si (OH) ₂ , Ge (OH) ₂ , Zr (OH) ₂ , Mn (OH) ₂ , Sn (OH) ₂ , TiR ₂ , CrR ₂ , SiR ₂ , SnR ₂ , GeR ₂ [R represents an alkyl group, a phenyl group, a naphthyl group or a derivative thereof. ], Si (OR ′) ₂ , Sn (OR ′) ₂ , Ge (OR ′) ₂ , Ti (OR ′) ₂ , Cr (OR ′) ₂ [R ′ is an alkyl group, phenyl group, naphthyl group, Represents a trialkylsilyl group, a dialkylalkoxysilyl group and derivatives thereof; ], Sn (SR ″) ₂ , Ge (SR ″) ₂ and [R ″ each represents an alkyl group, a phenyl group, a naphthyl group or a derivative thereof. ] Etc. are mentioned. Examples of oxymetals include VO, MnO, TiO and the like.

  Specific examples of the azaporphyrin-based dye (C) include TAP-2 (maximum absorption wavelength = 594 nm), TAP-9 (maximum absorption wavelength = 592 nm), and TAP-12 (maximum absorption wavelength = 586 nm) manufactured by Yamada Chemical Co., Ltd. Azaporphyrin compounds such as TAP-18 (maximum absorption wavelength = 594 nm) and TAP-45 (maximum absorption wavelength = 582 nm) can be preferably used. The above is an example, and the present invention is not limited to these. Two or more azaporphyrin-based dyes can be used in combination.

Rhodamine dye (D)
The rhodamine dye (D) used in the present invention is not particularly limited as long as it has a maximum absorption at a wavelength of 510 to 610 nm. For example, rhodamine B, rhodamine 6G, rhodamine 123, and Japanese Patent Application Laid-Open No. 2007-212226. Examples thereof include rhodamine compounds represented by the following general formula (III) described in the publication.

In the formula, R ^{11 to} R ¹² are each independently unsubstituted or methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, pentyl , An aryl group having 6 to 24 nuclear carbon atoms and having a substituent selected from a hexyl group and a halogen. Here, examples of the aryl group having 6 to 24 nuclear carbon atoms include a phenyl group, a naphthyl group, a biphenyl group, a terphenyl group, and a pyridyl group. R ¹³ represents a hydrogen atom, a methyl group, an ethyl group, n- propyl group, an isopropyl group, n- butyl group, isobutyl group, sec- butyl group, t- butyl group, a pentyl group, a hexyl group or a halogen, X ^- Represents a counter ion, and examples thereof include a halogen ion, a boron-containing complex ion, a metal complex ion, and a peroxide ion.
Further, rhodamine dyes described in JP-A-2005-2290 can also be used.

  A commercially available rhodamine dye (D) can also be used. For example, HSR-002 (maximum absorption wavelength = 550 nm) manufactured by Yamada Chemical Co., Ltd. HSR-AG01 (maximum absorption wavelength = 576 nm) manufactured by Yamada Chemical Co., Ltd., HSR-AG03 (Maximum absorption wavelength = 566 nm) and the like. The above is an example, and the present invention is not limited to these. Two or more rhodamine dyes can be used in combination.

Isocyanate curing agent (E)
The component (E) in the present invention is an isocyanate curing agent. Examples of the isocyanate curing agent (E) include tolylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, diphenylmethane diisocyanate, triphenylmethane triisocyanate, polymethylene polyphenyl isocyanate, and these. Examples include adducts with polyols such as trimethylolpropane.

Talc-containing stabilizer (F)
The component (F) in the present invention is a talc-containing stabilizer having a pH of 7.5 to 8.0. The content of talc in the component (F) is preferably 50 to 90% by mass, and more preferably 60 to 80% by mass.
The component (F) in the present invention preferably contains an organic compound, particularly an alkylamine compound. Examples of the alkyl group in the alkylamine compound include branched or straight chain alkyl groups having 4 to 14 carbon atoms, preferably 6 to 12 carbon atoms. Two or more alkylamine compounds can be used in combination. In the present invention, a form in which the alkylamine compound is mainly composed of n-octylamine is particularly preferable. (F) 50-10 mass% is preferable and, as for content of the organic compound in a component, 40-20 mass% is more preferable.
Component (F) can be used as a powder or a dispersion. In the case of a dispersion, the dispersion medium is preferably a ketone solvent such as methyl ethyl ketone (MEK) or an aromatic solvent such as toluene.
Further, the talc in the component (F) may be any of natural talc, synthetic talc and modified talc, and the particle size thereof is, for example, 10 to 200 nm. A silane coupling agent can be used in combination as required. As the component (F), commercially available products can be used, and examples thereof include ADEKA ARKLES A2 manufactured by ADEKA.
In the present invention, by adding the component (F), the heat resistance and moist heat resistance of the color film of the present invention can be further improved. The reason is not clear, but it is presumed that a complex of talc and an organic compound such as alkylamine interacts with the dye and functions as a protective component of the dye.

In the present invention, the pressure-sensitive adhesive layer (I) comprises a cyanine dye (B) having a maximum absorption at a wavelength of 510 to 610 nm, an azaporphyrin dye, with respect to 100 parts by mass of the (meth) acrylate copolymer (A). Contains 0.05 to 1.5 parts by mass of at least one dye selected from (C) and rhodamine dye (D) and 0.02 to 1.0 parts by mass of an isocyanate curing agent (E) To do. When the blending ratio of the pigments (B), (C) and / or (D) is less than 0.05 parts by mass, the blue color purity is not improved. Conversely, when it exceeds 1.5 parts by mass, the luminance (PL intensity) decreases, and the haze and visible light average transmittance also deteriorate. If the isocyanate-based curing agent (E) is less than 0.02 parts by mass, the durability of the pressure-sensitive adhesive will decrease, and if it exceeds 1.0 parts by mass, the adhesive strength will decrease significantly and the pot life will decrease. Therefore, it is not preferable.
As a more preferable form, 0.12 to 1.1 parts by mass of the dye (B), (C) and / or (D) with respect to 100 parts by mass of the (meth) acrylic acid ester copolymer (A), isocyanate In this embodiment, 0.05 to 0.8 parts by mass of the system curing agent (E) is used.
Moreover, in this invention, an adhesive layer (I) contains 0.1-5.0 mass parts of talc containing stabilizers (F) with respect to 100 mass parts of (meth) acrylic acid ester copolymers (A). The form is preferred. As mentioned above, the heat resistance and heat-and-moisture resistance of the color film of the present invention can be further improved by adding the talc-containing stabilizer (F). Furthermore, as a preferable form, it is a form which uses 0.3-3.0 mass parts of talc containing stabilizers (F) with respect to 100 mass parts of (meth) acrylic acid ester copolymer (A).

  The composition for forming the pressure-sensitive adhesive layer (A) can be produced by blending the above components at the specific ratio described above, and optionally adding and mixing them. The mixing is preferably performed by applying a high shear force.

The color film of the present invention can be produced, for example, as follows. The composition (solution) for forming the pressure-sensitive adhesive layer (A) is applied onto the transparent substrate film (A) by a commonly used application method such as transfer printing, knife coater, roll coater, gravure coater, etc. And a method of heating and drying with infrared rays, hot air, steam or the like, a method of transferring with a release sheet provided with an adhesive layer (A), and the like.
In addition, the thickness after drying of an adhesive layer (A) is about 5-100 micrometers, for example, and the range of 10-60 micrometers is especially preferable.

When applying the color film of the present invention to an organic EL device, for example, from the front glass plate of the display of the organic EL device to the viewing side, the front glass plate, the pressure-sensitive adhesive layer (A), and the transparent substrate film (A) Can be applied in order. The present invention is not limited to the above order.
Since the color film of this invention can improve blue color purity, it is especially preferable to be used for blue organic EL elements.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further, this invention is not limited to these examples.

Example 1
On the biaxially stretched polyethylene terephthalate film having a thickness of 100 μm (A-1540 manufactured by Toyobo Co., Ltd., an easy-adhesive layer is formed on both sides, referred to as biaxial PET (1)), the following pressure-sensitive adhesive layer ( B) The forming paint was applied so as to have a dry film thickness of 20 μm and dried to produce the color film of the present invention.

(Adhesive layer (I) forming paint)
・ Adhesive (1) 400 parts by mass
(Solid content 100 parts by mass)
Ethyl acetate solution of acrylic acid ester copolymer (solid content 25%), acid value 7.0 mgKOH / g, composition of polymer = acrylic acid-nbutyl (95.5% by mass) + 2-hydroxyethyl acrylate ( 0.5% by mass) + acrylic acid (4% by mass), mass average molecular weight = 1.8 million, Tg = −46 ° C.
・ Cyanine dye (1) 40 parts by mass
(Solid content 0.4 parts by mass)
(Made by ADEKA, GPX-103, maximum absorption wavelength is 518 nm, solid content is 1%, MEK dilution)
・ Stabilizer (1) 110 parts by mass
(Solid content 1.1 parts by mass)
Adeka Arkles A2, manufactured by ADEKA Corporation, talc content 71.0% by mass, organic compound content 29.0% by mass based on alkylamine (n-octylamine), dispersion medium is methyl ethyl ketone, solid 1% by mass
・ Polyisocyanate (1) 0.58 parts by mass
(Solid content 0.26 parts by mass)
Tolylene diisocyanate (TDI), solid content 45%
・ Solvent MEK 120 parts by mass

The following evaluation was performed about the obtained film.
(1) Color purity A solution containing polyfluorene blue light-emitting material (manufactured by American Dye Source, Inc., trade name: ADS129BE) was applied on a glass substrate with an ITO film by spin coating, and the dry film thickness was about A 60 nm light emitting layer was formed. Next, a cathode material was vapor-deposited on the light emitting layer by vacuum vapor deposition to produce an organic EL element A.
On the glass substrate of this organic EL element A (opposite side of the ITO film), the color film of the present invention was attached so that the pressure-sensitive adhesive layer (A) was on the glass substrate side.
Subsequently, a voltage of 8 V was applied to the organic EL element A, and the value of CIE chromaticity coordinates of light emission was measured.
It shows that the blue color purity is improved as the value of the chromaticity coordinate y is lower.
In addition, the value of the chromaticity coordinates x and y of the organic EL element A to which the color film of the present invention is not attached is (0.156, 0.205).
The evaluation criteria are as follows.
A: The value of the chromaticity coordinate y is less than 0.140.
○: The value of the chromaticity coordinate y is 0.140 or more and less than 0.170.
(Triangle | delta): The value of chromaticity coordinate y is 0.170 or more and less than 0.190.
X: The value of the chromaticity coordinate y is 0.190 or more.

(2) Luminance (PL intensity)
The organic EL element A to which the color film was attached was irradiated with UV light having a peak wavelength of 365 nm, and PL (photoluminescence) intensity was measured.
The PL intensity of the organic EL element A to which the color film of the present invention was not attached was taken as 100% and displayed as an index. It shows that PL intensity becomes high, so that the value of% is high.
The evaluation criteria are as follows.
A: The index value is 85% or more.
A: The index value is less than 85% and 40% or more.
Δ: Index value is less than 40% and 20% or more.
X: The index value is less than 20%.

(3) Minimum light transmittance (510 to 610 nm)
Using a spectrophotometer [JASCO Corporation, U-best V-570], the transmission spectrum at a wavelength of 510 to 610 nm is measured for the obtained color film, and the lowest transmittance in the range is obtained. Asked.

(4) Haze It measured using the haze computer [Nippon Denshoku Industries Co., Ltd. NDH2000] according to JISK7136 with respect to the obtained color film.
The evaluation criteria are as follows.
○: Less than 0.5%.
Δ: 0.5% or more and less than 1.0%.
X: 1.0% or more.

(5) Visible light (400-700 nm) average transmittance It measured based on JISA5759 with respect to the obtained color film.
The evaluation criteria are as follows.
○: 80% or more.
Δ: Less than 80%, 50% or more.
X: Less than 50%.

(6) Heat resistance After measuring the obtained color film with a spectrophotometer [JASCO Corporation, U-best V-570] according to JIS Z8701-1999, (Y, x, y), (Y, x, y) after standing in a thermostatic layer at 80 ° C. for 500 hours was measured in the same manner as described above. The amount of change in (Y, x, y) before and after the test was determined and evaluated according to the following criteria.
-Evaluation standard of heat resistance (circle): The change amount of each numerical value of (Y, x, y) is less than 3%.
Δ: All the numerical values of (Y, x, y) are less than 5%, but at least one is 3% or more.
X: At least one change amount of each numerical value of (Y, x, y) is 5% or more.

(7) Moisture and heat resistance Using the obtained color film, the Y value (transmittance) after 60 hours and 90% RH × 500 hours was measured according to JIS Z8701-1999 by SolidSpec 3700 manufactured by Shimadzu Corporation. The subsequent change amount (ΔY value) was obtained and evaluated according to the following criteria.
-Evaluation standard of wet heat resistance ○: The amount of change between the initial stage and the test is ≦ 3%.
(Triangle | delta): The variation | change_quantity after an initial stage and a test is 3 <variation | change_quantity <= 5%.
X: The amount of change after initial and after test is> 5%.

  The results are shown in Table 1.

Example 2
In Example 1, Example 1 was repeated except that the blending ratio of the cyanine dye (1) was changed to 60 parts by mass (solid content: 0.6 parts by mass). The results are shown in Table 1.

Example 3
In Example 1, Example 1 was repeated except that the blending ratio of the cyanine dye (1) was changed to 10 parts by mass (solid content 0.1 parts by mass). The results are shown in Table 1.

Example 4
In Example 1, Example 1 was repeated except that the blending ratio of the cyanine dye (1) was changed to 120 parts by mass (solid content 1.2 parts by mass). The results are shown in Table 1.

Example 5
In Example 1, Example 1 was repeated except that the following cyanine dye (2) was used instead of the cyanine dye (1). The results are shown in Table 1.
Cyanine dye (2): manufactured by ADEKA, GPZ-133, maximum absorption wavelength = 556 nm.

Example 6
In Example 1, Example 1 was repeated except that the following cyanine dye (3) was used instead of the cyanine dye (1). The results are shown in Table 2.
Cyanine dye (3): ADEKA, TY-102, maximum absorption wavelength = 588 nm.

Example 7
In Example 1, Example 1 was repeated except that the following rhodamine dye (1) was used instead of the cyanine dye (1). The results are shown in Table 2.
Rhodamine dye (1): Yamada Chemical Co., Ltd., HSR-002, maximum absorption wavelength = 550 nm.

Example 8
In Example 7, Example 7 was repeated except that the blending ratio of the rhodamine dye (1) was changed to 100 parts by mass (solid content: 1.0 part by mass). The results are shown in Table 2.

Example 9
In Example 1, Example 1 was repeated except that the following azaporphyrin dye (1) was used instead of the cyanine dye (1). The results are shown in Table 2.
Azaporphyrin pigment (1): Yamada Chemical Co., Ltd., TAP-12, maximum absorption wavelength = 586 nm.

Example 10
In Example 1, Example 1 was repeated except that the following azaporphyrin dye (2) was used instead of the cyanine dye (1). The results are shown in Table 2.
Azaporphyrin pigment (2): Yamada Chemical Co., Ltd., TAP-18, maximum absorption wavelength = 594 nm.

Example 11
In Example 1, Example 1 was repeated except that the stabilizer (1) was not used. The results are shown in Table 3.

Example 12
In Example 6, Example 6 was repeated except that the stabilizer (1) was not used. The results are shown in Table 3.

Example 13
In Example 1, Example 1 was repeated except that the blending ratio of the stabilizer (1) was changed to 5 parts by mass (solid content 0.05 part by mass). The results are shown in Table 3.

Example 14
In Example 1, Example 1 was repeated except that the blending ratio of the stabilizer (1) was changed to 600 parts by mass (solid content of 6 parts by mass). The results are shown in Table 3.

Example 15
In Example 1, Example 1 was repeated except that the following adhesive (2) was used instead of the adhesive (1). The results are shown in Table 3.
Adhesive (2): Ethyl acetate solution of acrylic acid ester copolymer (solid content 25%), acid value 7.4 mgKOH / g, polymer composition = acrylic acid-nbutyl (76.5% by mass) + acrylic Methyl acid (20% by mass) + acrylic acid (3.5% by mass), mass average molecular weight = 800,000, Tg = −29 ° C.

Example 16
In Example 1, Example 1 was repeated except that a 1: 1 mixture of cyanine dye (1) and rhodamine dye (1) (0.2 parts by mass as the solid content) was used as the dye. . The results are shown in Table 4.

Example 17
In Example 1, Example 1 was repeated except that a 1: 1 mixture of cyanine dye (2) and azaporphyrin dye (1) (each 0.2 parts by mass as a solid content) was used as the dye. It was. The results are shown in Table 4.

Comparative Example 1
In Example 1, Example 1 was repeated except that the following cyanine dye (4) was used instead of the cyanine dye (1). The results are shown in Table 5.
Cyanine dye (4): Hayashibara Biochemical Laboratories, NK9100, maximum absorption wavelength = 494 nm.

Comparative Example 2
In Example 1, Example 1 was repeated except that the following azaporphyrin dye (3) was used instead of the cyanine dye (1). The results are shown in Table 5.
Azaporphyrin-based dye (3): manufactured by Yamada Chemical Co., Ltd., YPB-1, maximum absorption wavelength = 502 nm.

Comparative Example 3
In Example 1, Example 1 was repeated except that the blending ratio of the cyanine dye (1) was changed to 3 parts by mass (solid content: 0.03 parts by mass). The results are shown in Table 5.

Comparative Example 4
In Example 1, Example 1 was repeated except that the blending ratio of the cyanine dye (1) was changed to 170 parts by mass (solid content: 1.7 parts by mass). The results are shown in Table 5.

Comparative Example 5
Example 1 was repeated except that the color film prepared in Example 1 was not provided and a commercially available optical blue color filter (manufactured by Fujifilm, trade name BPN-45) was attached. The results are shown in Table 6.

The following matters are derived from the results in Tables 1-6.
-Since the color film of Example 1 has an adhesive layer (I) which mix | blended the specific pigment | dye and the isocyanate hardening | curing agent with the specific amount in the specific binder on the transparent base film (a), As a result, the blue color purity of the organic EL element was improved, the luminance (PL intensity) was not significantly lowered, and the haze, visible light average transmittance, heat resistance, and wet heat resistance were excellent.
Example 2 was an example in which 0.6 part by mass of the cyanine dye (1) was added, and showed the same performance as Example 1.
Example 3 is an example in which 0.1 part by mass of the cyanine dye (1) was added, and was the same as Example 1 except that the color purity was evaluated as Δ and the luminance (PL intensity) was evaluated as ◎. Showed the performance.
Example 4 is an example in which 1.2 parts by mass of the cyanine dye (1) was added, and the color purity was evaluated as ◎, luminance (PL intensity), haze, and visible light average transmittance were evaluated as Δ. Except for this, the same performance as in Example 1 was exhibited.
Example 5 is an example using the cyanine dye (2), and showed the same performance as Example 1 except that the visible light average transmittance was Δ evaluation.
Example 6 is an example using the cyanine dye (3), and showed the same performance as Example 1 except that the average visible light transmittance was Δ evaluation.
Example 7 is an example using the rhodamine dye (1), and showed the same performance as Example 1 except that the visible light average transmittance was Δ evaluation.
-Example 8 is an example in which 1.0 part by mass of the rhodamine dye (1) of Example 7 is added. Color purity is evaluated as ◎, luminance (PL intensity), haze, and visible light average transmittance are evaluated as Δ. Except that there was, the same performance as in Example 1 was exhibited.
Example 9 is an example using the azaporphyrin pigment (1), and showed the same performance as Example 1 except that the average visible light transmittance was Δ evaluation.
Example 10 is an example using the azaporphyrin pigment (2), and showed the same performance as Example 1 except that the average visible light transmittance was Δ evaluation.
-Example 11 was the example which did not add a stabilizer (1), and showed the same performance as Example 1 except that heat resistance and heat-and-moisture resistance were (triangle | delta) evaluation.
-Example 12 is the example which did not add the stabilizer (1) of Example 6, and is the same as Example 6 except that visible light average transmittance, heat resistance, and heat-and-moisture resistance were △ evaluation. Showed performance.
Example 13 was an example in which 0.05 part by mass of the stabilizer (1) was added, and showed the same performance as Example 1 except that the heat resistance and moist heat resistance were Δ evaluation.
-Example 14 is the example which added 6 mass parts of stabilizers (1), and showed the same performance as Example 1 except that visible light average transmittance | permeability was (triangle | delta) evaluation.
-Example 15 was an example using an adhesive (2), and showed the same performance as Example 1.
Example 16 was an example using 0.2 parts by mass of the cyanine dye (1) and 0.2 parts by mass of the rhodamine dye (1), and showed the same performance as in Example 1.
Example 17 is an example in which 0.2 part by mass of the cyanine dye (2) and 0.2 part by mass of the azaporphyrin dye (1) were used, and the visible light average transmittance was Δ evaluation. Except for this, the same performance as in Example 1 was exhibited.

Comparative Example 1 is an example using the cyanine dye (4), and is outside the scope of the present invention, so the color purity was evaluated as x.
Comparative Example 2 is an example in which the azaporphyrin pigment (3) is used and is out of the scope of the present invention, so the color purity was evaluated as x.
Comparative Example 3 was an example in which 0.03 parts by mass of the cyanine dye (1) was added, and was outside the scope of the present invention, so the color purity was evaluated as x.
Comparative Example 4 is an example in which 1.7 parts by mass of the cyanine dye (1) is added and is outside the scope of the present invention, so the luminance (PL intensity), haze, and visible light average transmittance are evaluated as x. It was.
Comparative Example 5 was an example in which the color film of Example 1 was not used but an optical blue color filter was used instead, and was outside the scope of the present invention, so the luminance (PL intensity) was evaluated as x.

Claims (7)

A color film for an organic electroluminescence device having a pressure-sensitive adhesive layer (A) on a transparent substrate film (A),
The cyanine dye having a maximum absorption at a wavelength of 510 to 610 nm with respect to 100 parts by mass of the (meth) acrylic acid ester copolymer (A) having a mass average molecular weight of 400,000 to 2.5 million. 0.05 to 1.5 parts by mass of at least one dye selected from (B), azaporphyrin dye (C) and rhodamine dye (D), and 0.02 to isocyanate curing agent (E) The color film for organic electroluminescent elements characterized by containing 1.0 mass part.   The color film for organic electroluminescent elements according to claim 1, wherein the glass transition temperature of the (meth) acrylic acid ester copolymer (A) is 0 ° C or lower.   Talc having a pH of 7.5 to 8.0 with respect to 100 parts by mass of the (meth) acrylic acid ester copolymer (A) having a mass average molecular weight of 400,000 to 2.5 million. The color stabilizer for organic electroluminescent elements according to claim 1, further comprising 0.1 to 5.0 parts by mass of a containing stabilizer (F).   The said talc containing stabilizer (F) contains an alkylamine compound, The color film for organic electroluminescent elements of Claim 3 characterized by the above-mentioned.   The color film for organic electroluminescent elements according to claim 3 or 4, wherein the talc content in the talc-containing stabilizer (F) is 60 to 80% by mass.   The said transparent base film (a) is a biaxially stretched polyethylene terephthalate film, The color film for organic electroluminescent elements of Claim 1 characterized by the above-mentioned.   It is used for blue organic electroluminescent elements, The color film for organic electroluminescent elements in any one of Claims 1-6 characterized by the above-mentioned.