Composition, for encapsulating organic light emitting device, having ultraviolet-blocking properties and organic light emitting display device comprising same

Abstract

The present invention relates to a composition for encapsulating an organic light emitting device and an organic light emitting display device comprising same, and more specifically, to a composition for encapsulating an organic light emitting device and an organic light emitting display device comprising same wherein the composition not only effectively blocks moisture or oxygen that enters an organic light emitting display device from the outside, but also ensures the performance and lifespan of an organic light emitting device by imparting UV-blocking properties, and has low dielectric constant properties so as to provide excellent touch sensitivity for a touch panel.

Description

Composition for encapsulating organic light-emitting diode having ultraviolet ray blocking properties and organic light-emitting display device comprising the same The present invention relates to a composition for sealing an organic light-emitting device and an organic light-emitting display device comprising the same, and more particularly, to a composition for sealing an organic light-emitting device which not only effectively blocks moisture or oxygen flowing into an organic light-emitting display device from the outside but also provides UV blocking properties to secure the performance and lifespan of an organic light-emitting device, and has low dielectric constant properties so as to have excellent touch sensitivity of a touch panel, and to an organic light-emitting display device comprising the same. Organic layer materials, electrodes, etc. that make up an organic light-emitting device have a problem in that their light-emitting characteristics and lifespan deteriorate due to external moisture or oxygen. Therefore, a protective layer that can protect the organic materials and electrodes, etc. is required. Such a protective layer is usually formed in a laminated structure of one or more organic layers and inorganic layers to effectively block external moisture or oxygen. Recently, many capacitive touch panels using organic light-emitting diodes have been adopted. These capacitive touch panels detect touch by the change in capacitance when a conductor comes into contact with the touch panel. In the case of high-dielectric constant materials, when an external electric field is applied, polarization occurs a lot, which tends to reduce touch sensitivity. Therefore, there is a demand for the development of a composition for sealing an organic layer used in a laminated structure having low-dielectric constant characteristics and excellent touch sensitivity of the touch panel. The present invention aims to provide a composition for sealing an organic light-emitting device having low dielectric constant characteristics so as to have excellent touch sensitivity of a touch panel, and an organic light-emitting display device comprising the same, which can effectively block moisture or oxygen flowing into an organic light-emitting display device from the outside to secure the performance and lifespan of an organic light-emitting device, and can also secure the performance and lifespan of an organic light-emitting device by imparting UV blocking characteristics. The present invention is a composition for sealing an organic light-emitting device designed to solve the above problems, comprising a photocurable monomer including all of the monomers represented by the following chemical formulas 1 to 3; an N,N-dimethylaniline-based ultraviolet absorber; and a photopolymerization initiator; formed by photocuring, and characterized in that the transmittance at a wavelength of 405 nm penetrating a 10 μm thick organic layer formed thereon is 30% or less. [Chemical Formula 1] [Chemical formula 2] [Chemical Formula 3] In the above chemical formulas 1 to 3, R1 to R5 are each independently a (meth)acryloyl group, L1 and L2 are each independently substituted or unsubstituted C 1-10 is an alkylene group, X1 and X2 are each independently hydrogen or C 1-10 is an alkyl group, m and n are integers from 1 to 4, respectively. Another invention, an organic light-emitting display device, is characterized by including a sealing portion containing the composition for sealing an organic light-emitting element. When forming a sealing portion of an organic light-emitting display device using the composition for sealing an organic light-emitting element according to the present invention, not only can the performance and lifespan of the organic light-emitting element be secured by effectively blocking moisture or oxygen flowing in from the outside, but also the performance and lifespan of the organic light-emitting element can be secured by imparting UV blocking properties, and since it has low dielectric constant properties, it also has an excellent effect on the touch sensitivity of the touch panel. FIG. 1 is an exemplary diagram of an organic light-emitting display device according to one embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When adding reference numerals to components of each drawing, it should be noted that the same reference numerals are given to the same components as much as possible even if they are shown in different drawings. In addition, when describing the present invention, if it is determined that a specific description of a related known configuration or function may obscure the gist of the present invention, a detailed description thereof is omitted. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there may also be other components “connected,” “coupled,” or “connected” between each component. Also, when a component such as a layer, film, region, or plate is described as being “on” or “on” another component, this includes not only the case where it is “directly on” the other component, but also the case where there are other components in between. Conversely, when a component is described as being “directly on” another part, it means that there are no other parts in between. The term “(meth)acryl” as used herein means acryl and / or methacryl. The term “alkyl group” as used herein, unless otherwise stated, means a radical of a saturated aliphatic functional group having 1 to 60 carbon atoms linked by a single bond, including a straight-chain alkyl group, a branched-chain alkyl group, a cycloalkyl (alicyclic) group, an alkyl-substituted cycloalkyl group, and a cycloalkyl-substituted alkyl group. The term “alkylene group” as used herein means an alkanediyl group linked to a saturated hydrocarbon without a double bond, and having two linking groups. Also, unless explicitly stated otherwise, the term “substituted or unsubstituted” used herein means “substituted” or “unsubstituted” and includes deuterium, halogen, amino group, nitrile group, nitro group, C 1-20Alkyl group of C 1-20 Alkoxy group of C 1-20 Alkylamine group of C 1-20 Alkylthiophene group of C 6-20 Arylthiophene group of C 2-20 Alkenyl group of C 2-20 Alkyne group, C 3-20 Cycloalkyl group of C 6-20 Aryl group of C substituted with deuterium 6-20 Aryl group of C 8-20 C containing an arylalkenyl group, a silane group, a boron group, and at least one heteroatom selected from the group consisting of O, N, S, Si and P 2-20 This means that it can be substituted with one or more substituents selected from the group consisting of heterocyclic groups, but is not necessarily limited to these substituents. The term “dielectric constant” used in this specification means a value measured by the capacitance method for an organic layer including the composition for sealing an organic light-emitting device according to the present invention. The term “viscosity” used in this specification means a value measured using a rotational viscometer for an organic layer including the composition for encapsulating an organic light-emitting device according to the present invention. The term “transmittance” used in this specification means a value measured using a spectrophotometer for an organic layer including the composition for encapsulating an organic light-emitting device according to the present invention. The composition for sealing an organic light-emitting device according to the present invention comprises a photocurable monomer including all of the monomers represented by the following chemical formulas 1 to 3; an N,N-dimethylaniline-based ultraviolet absorber; and a photopolymerization initiator; and is formed by photocuring, and is characterized in that the transmittance at a wavelength of 405 nm that penetrates a 10 μm thick organic layer formed therein is 30% or less. [Chemical Formula 1] [Chemical Formula 1] [Chemical formula 2] [Chemical Formula 3] In the above chemical formulas 1 to 3, R1 to R5 are each independently a (meth)acryloyl group, L1 and L2 are each independently substituted or unsubstituted C 1-10 is an alkylene group, X1 and X2 are each independently hydrogen or C 1-10 is an alkyl group, m and n are integers from 1 to 4, respectively. The monomer represented by the above chemical formula 1 may be at least one selected from the group consisting of 1,14-tetradecanediol di(meth)acrylate, 1,15-pentadecanediol di(meth)acrylate, 1,16-hexadecanediol di(meth)acrylate, 1,17-heptadecanediol di(meth)acrylate, and 1,18-octadecanediol di(meth)acrylate, but is not necessarily limited thereto. In addition, the monomer represented by the above chemical formula 2 may be selected from the group consisting of isotetradecyl (meth)acrylate, isopentadecyl (meth)acrylate, isohexadecyl (meth)acrylate, isoheptadecyl (meth)acrylate, and isooctadecyl (meth)acrylate, but is not necessarily limited thereto. The monomer represented by the above chemical formula 3 may be at least one selected from the group consisting of bisphenol-A ethylene oxide diacrylate, bisphenol-A ethylene oxide dimethacrylate, bisphenol-A ethoxylate diacrylate, bisphenol-A ethoxylate diacrylate, bisphenol-A polyethoxylate diacrylate, and bisphenol-A diacrylate, but is not necessarily limited thereto. The above N,N-dimethylaniline-based ultraviolet absorbent may be a compound represented by the following chemical formula 4 having an absorbance peak of Abs 370 to 400 nm. [Chemical Formula 4] Preferably, the N,N-dimethylaniline-based ultraviolet absorbent is included in an amount of 0.2 to 0.4 parts by weight based on 100 parts by weight of the photopolymerization initiator, which has the advantage of improving transmittance not only at a wavelength of 405 nm but also at a wavelength of 500 nm. In addition, the composition for sealing an organic light-emitting device according to the present invention may have a dielectric constant of 2.65 or less at a frequency of 100 kHz to 1 MHz, a viscosity of 10 to 30 cPs, and a ring parameter of 0.01 to 0.25. For reference, the ring parameter means the carbon molecular weight contained in a cyclo or phenyl ring divided by the total molecular weight, and may be defined by the following mathematical formula 1. [Mathematical formula 1] The photocurable monomer according to the present invention may further include at least one monomer selected from the group consisting of compounds represented by the following chemical formulas 5 to 7. [Chemical Formula 5] [Chemical formula 6] [Chemical formula 7] In the above chemical formulas 5 to 7, R6 and R7 are each independently a (meth)acryloyl group, A is C forming two bridged bonding rings. 1-12 is a substituted or unsubstituted cycloalkylene group, B is B is C6-12 is a substituted or unsubstituted bridged cycloalkyl group, L is a direct bond or C 1-10 is an alkylene group, Ar1 is C 6-60 is the aryl group of One of R8 and R9 is hydrogen and the other is a methyl group, p is an integer between 1 and 300. The photocurable monomer represented by the above chemical formula 6 may be a compound represented by the following chemical formula 8, but is not necessarily limited thereto. [Chemical formula 8] The monomer represented by the above chemical formula 5 may be a monomer selected from the group consisting of the following chemical formulas A-1 to A-3, but is not necessarily limited thereto. The photocurable monomer represented by the above chemical formula 7 may be ethylene propylene diene monomer (EPDM). It is preferable that the photocurable monomer is included in an amount of 20 to 99 wt% based on the total weight of the photocurable monomer. More specifically, the monomer represented by the chemical formula 1 may be contained in an amount of 15 to 35 wt%, the monomer represented by the chemical formula 2 in an amount of 30 to 65 wt%, the monomer represented by the chemical formula 3 in an amount of 1 to 30 wt%, and the monomers represented by the chemical formulas 5 and 6 in an amount of 1 to 30 wt%, respectively, based on the total weight of the composition. The composition for encapsulating an organic light-emitting device according to the present invention includes a photopolymerization initiator capable of curing the photocurable monomer through UV irradiation or the like. The photopolymerization initiator is not particularly limited as long as it is a conventional photopolymerization initiator capable of performing a photocurable reaction. For example, the photopolymerization initiator may include a triazine type, an acetophenone type, a benzophenone type, a thioxanthone type, a benzoin type, a phosphorus type, an oxime type, or a mixture thereof. The above triazine series includes 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis(trichloromethyl)-s-triazine, 2-(3',4'-dimethoxy styryl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4'-methoxy naphthyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(p-methoxy phenyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(p-tolyl)-4,6-bis(trichloromethyl)-s-triazine, 2-biphenyl-4,6-bis(trichloromethyl)-s-triazine, bis(trichloromethyl)-6-styryl-s-triazine, 2-(naphtho-1-yl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4-methoxy naphtho-1-yl)-4,6-bis(trichloromethyl)-s-triazine, 2,4-trichloromethyl(piperonyl)-6-triazine, 2,4-(trichloromethyl(4'-methoxy styryl)-6-triazine or a mixture thereof. The above acetophenones include 2,2'-diethoxy acetophenone, 2,2'-dibuthoxy acetophenone, and 2-

[0230] Hydroxy-2-methylpropiophenone, pt-butyl trichloro acetophenone, pt-butyl dichloro acetophenone, 4-chloro

[0231] Acetophenone, 2,2'-dichloro-4-phenoxy acetophenone, 2-methyl-1-(4-(methylthio)phenyl)-2-morpholino propan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholino phenyl)-butan-1-one, or a mixture thereof. The above benzophenone series may be benzophenone, benzoyl benzoate, methyl benzoyl benzoate, 4-phenyl benzophenone, hydroxy benzophenone, acrylated benzophenone, 4,4'-bis(dimethylamino)benzophenone, 4,4'-dichloro benzophenone, 3,3'-dimethyl-2-methoxy benzophenone, or a mixture thereof. The above thioxanthone series may be thioxanthone, 2-methyl thioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, 2,4-diisopropyl thioxanthone, 2-chloro thioxanthone or a mixture thereof. The above benzoin group may be benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl dimethyl ketal or a mixture thereof. The above mentioned catalyst may be bisbenzoylphenyl phosphine oxide, benzoyldiphenyl phosphine oxide or a mixture thereof. The above oximes may be 2-(o-benzoyloxime)-1-[4-(phenylthio)phenyl]-1,2-octanedione and 1-(o-acetyloxime)-1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]ethanone, or a mixture thereof. The photopolymerization initiator is preferably included in an amount of 0.1 to 10 wt% based on the total weight of the composition. This is because when the photopolymerization initiator is included in the above content range, not only can photopolymerization sufficiently occur upon exposure, but also outgassing and reliability deterioration due to unreacted initiator remaining after photopolymerization can be prevented. The composition for encapsulating an organic light-emitting device according to the present invention may additionally include at least one additive selected from the group consisting of a surfactant, a curing accelerator, and an antioxidant. In particular, the surfactant is advantageous in inducing dispersion of the composition. The composition for sealing an organic light-emitting device according to the present invention has a low dielectric constant of 2.60 or less at a frequency of 100 kHz to 1 MHz, and therefore, when the composition for sealing is applied to a touch panel, it has an excellent effect of improving touch sensitivity. In addition, it is preferable that the composition for sealing an organic light-emitting device according to the present invention has a viscosity of 10 to 20 cPs, because the processability of the composition can be further improved within the above viscosity range. Another invention relates to an organic light-emitting display device, which includes an encapsulating portion containing the composition for encapsulating an organic light-emitting element. FIG. 1 is an exemplary diagram of an organic light-emitting display device according to an embodiment of the present invention. The organic light-emitting display device disclosed in FIG. 1 includes a substrate (110), an organic light-emitting element (200) disposed on the substrate (110), and an encapsulation unit (300) disposed on the organic light-emitting element (200). At this time, the encapsulation unit (300) is disclosed as a multilayer composed of a first encapsulation layer (310) and a second encapsulation layer (320), but the present invention may include a configuration in which the encapsulation unit (300) has two or more layers. When the encapsulation unit (300) is composed of two multilayers, it may include an inorganic barrier layer and an organic barrier layer. For example, when the first encapsulation layer (310) is an inorganic barrier layer, the second encapsulation layer (320) may be an organic barrier layer, but the stacking order is not limited thereto. The above-mentioned sealing portion (300) can form an organic barrier layer for the purpose of sealing or encapsulating an organic light-emitting display device, and the organic barrier layer can be formed by photocuring a composition for sealing an organic light-emitting device according to the present invention. The above-mentioned encapsulating composition (organic barrier layer material) can be applied by inkjet, vacuum deposition, spin coating or slit coating methods, and an initiator can be used during photocuring. Hereinafter, the present invention will be specifically described by way of examples of a composition for sealing an organic light-emitting device according to the present invention, but the present invention is not limited to the following examples. [Example] A photocurable monomer, an N,N-dimethylaniline-based ultraviolet absorber (EV-290), and a photoinitiator (TPO) were mixed in the content ratios shown in Table 1 below to prepare compositions for encapsulating organic light-emitting devices of Examples 1 and 2 and Comparative Example 1. Afterwards, the above-mentioned manufactured composition was stirred for 12 hours and filtered through a PTFE filter with a pore size of 0.45 μm. The filtered composition for encapsulating an organic light-emitting device was spin-coated to form a thickness of 8.0 μm or more, and then a UV exposure device was used to irradiate the composition with a light amount of 1 J to form an encapsulating film. The dielectric constant, viscosity, and transmittance were measured using the following methods. Dielectric constant: The composition for encapsulating an organic light-emitting device is coated and cured on the lower electrode to a thickness of 8.0㎛ or more. After that, the upper electrode Ag is deposited to a thickness of 1,000 Å. The dielectric constant of the manufactured specimen was measured using KEYSIGHT, E4980A, and then calculated. Viscosity: The viscosity of the composition for encapsulating a liquid organic light-emitting device was measured using a rotational viscometer. Transmittance: The transmittance was measured at wavelengths of 410 nm and 500 nm at a thickness of 10 μm for the encapsulation film formed with the composition for encapsulating a cured organic light-emitting device. As a result, the dielectric constants of the sealing films formed with the compositions for sealing an organic light-emitting element of Examples 1 and 2 and Comparative Example 1 according to the present invention were all 2.60 F / m or less, but the transmittance at a wavelength of 410 nm for the sealing films formed with the compositions for sealing an organic light-emitting element of Examples 1 and 2 were all 30% or less, whereas the transmittance at a wavelength of 410 nm for the sealing film formed of Comparative Example 1 exceeded 30%. However, it was found that the transmittance at a wavelength of 500 nm for the sealing film formed of Example 1 was better than that of the sealing film formed of Example 2. Through this, the touch panel to which the sealing film manufactured according to the present invention is applied has the advantage of preventing damage to the organic light-emitting element from external UV by lowering the light transmittance. No. Photocurable monomer Photoinitiator UV blocker Dielectric constant Viscosity Surface tension Transmittance TDMABPAEMDAIBOMAISTAEPDMBAPOEV 290 410 nm 500 nm Weight parts Weight parts Weight parts [F / m] [cPs] [mN / m] [%] Exemplary example 125 10 5 5 9.95 0.05 10.32 5 119.5 28.52 1.999.5 Exemplary example 225 10 5 5 9.95 0.05 10.52 5 119.5 28.510.298.1 Comparative example 125 10 5 5 9.95 0.05 1-2.5 119.5 28.599.599.5 TDMA: 1,14-Tetradecanediol dimethacrylate (CAS: 168473-14-1)BPAEDMA: Bisphenol A Ethoxylate Dimethacrylate (CAS: 41637-38-1) IBOMA: Isobornyl Acrylate (CAS: 5888-33-5) ISTA: Isooctadecyl acrylate (CAS: 93841-48-6) EPDM: Ethylene-Propylene-Diene Monomer (CAS: 25034-71-3) BAPO: Bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide (CAS: 162881-26-7) EV-290: Dimethyl 2-(4-(dimethylamino)benzylidene)malonate The above description is merely an example of the present invention, and those skilled in the art will appreciate that various modifications may be made without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in this specification are not intended to limit the present invention, but rather to explain it, and the spirit and scope of the present invention are not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all techniques within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention. **Explanation of symbols** 100 : substrate 200: Organic light-emitting diode 300 : Envelope 310: 1st Bag Department 320: Second Seal Department

Claims

1. A photocurable monomer including all of the monomers represented by the following chemical formulas 1 to 3; an N,N-dimethylaniline-based ultraviolet absorber; and a photopolymerization initiator; formed by photocuring, A composition for encapsulating an organic light-emitting device, having a transmittance of 30% or less at a wavelength of 405 nm through a 10 μm thick organic layer formed above: [Chemical Formula 1] [Chemical formula 2] [Chemical Formula 3] In the above chemical formulas 1 to 3, R1 to R5 are each independently a (meth)acryloyl group, L1 and L2 are each independently substituted or unsubstituted C 1-10 is an alkylene group, X1 and X2 are each independently hydrogen or C 1-10 is an alkyl group, m and n are integers from 1 to 4, respectively.

2. In paragraph 1, The above N,N-dimethylaniline type ultraviolet absorber is a compound represented by the following chemical formula 4, a composition for sealing an organic light-emitting device: [Chemical Formula 4] R1 is hydrogen or chlorine, R2 is alkyl having 4 to 28 carbon atoms or -C s H 2s COOR4 (s is 1 to 4), R3 and R4 are each independently hydrogen or alkyl having 1 to 18 carbon atoms.

3. In paragraph 1, The composition for sealing an organic light-emitting device has a dielectric constant of 2.65 or less and a viscosity of 10 to 30 cPs at a frequency of 100 kHz to 1 MHz.

4. In paragraph 1, The composition for sealing an organic light-emitting device is a composition for sealing an organic light-emitting device having a ring parameter of 0.01 to 0.

25.

5. In paragraph 1, A composition for sealing an organic light-emitting device, wherein the photocurable monomer further comprises at least one monomer selected from the group consisting of compounds represented by the following chemical formulas 5 to 7: [Chemical Formula 5] [Chemical formula 6] [Chemical formula 7] In the chemical formulas 5 to 7 above, R6 and R7 are each independently a (meth)acryloyl group, A is C forming two bridged bonding rings. 1-12 is a substituted or unsubstituted cycloalkylene group, B is B is C 6-12 is a substituted or unsubstituted bridged cycloalkyl group, L is a direct bond or C 1-10 is an alkylene group, Ar1 is C 6-60 is the aryl group of One of R8 and R9 is hydrogen and the other is a methyl group, p is an integer between 1 and 300.

6. In paragraph 5, A composition for encapsulating an organic light-emitting device, wherein the photocurable monomer is contained in an amount of 20 to 99 wt% based on the total weight of the composition.

7. In paragraph 1, A composition for encapsulating an organic light-emitting device, wherein the monomer represented by the above chemical formula 1 is at least one selected from the group consisting of 1,14-tetradecanediol di(meth)acrylate, 1,15-pentadecanediol di(meth)acrylate, 1,16-hexadecanediol di(meth)acrylate, 1,17-heptadecanediol di(meth)acrylate, and 1,18-octadecanediol di(meth)acrylate.

8. In paragraph 1, A composition for sealing an organic light-emitting device, wherein the monomer represented by the above chemical formula 2 is at least one selected from the group consisting of isotetradecyl (meth)acrylate, isopentadecyl (meth)acrylate, isohexadecyl (meth)acrylate, isoheptadecyl (meth)acrylate, and isooctadecyl (meth)acrylate.

9. In paragraph 1, A composition for encapsulating an organic light-emitting device, wherein the monomer represented by the above chemical formula 3 is at least one selected from the group consisting of bisphenol-A ethylene oxide diacrylate, bisphenol-A ethylene oxide dimethacrylate, bisphenol-A ethoxylate diacrylate, bisphenol-A ethoxylate diacrylate, bisphenol-A polyethoxylate diacrylate, and bisphenol-A diacrylate.

10. In paragraph 5, A composition for sealing an organic light-emitting device, wherein the photocurable monomer represented by the above chemical formula 5 is a compound represented by the following chemical formula 8. [Chemical formula 8] 11. In paragraph 5, A composition for sealing an organic light-emitting device, wherein the photocurable monomer represented by the chemical formula 6 is a monomer selected from the group consisting of the following chemical formulas A-1 to A-3.

12. In paragraph 5, A composition for encapsulating an organic light-emitting device, wherein the photocurable monomer represented by the chemical formula 7 is ethylene propylene diene monomer (EPDM).

13. In paragraph 1, A composition for encapsulating an organic light-emitting device, wherein the photopolymerization initiator is at least one selected from the group consisting of triazine-based, acetophenone-based, benzophenone-based, thioxanthone-based, benzoin-based, phosphorus-based, oxime-based, and mixtures thereof.

14. In paragraph 1, A composition for sealing an organic light-emitting device, comprising 0.2 to 0.4 parts by weight of the N,N-dimethylaniline-based ultraviolet absorber based on 100 parts by weight of the photopolymerization initiator.

15. In paragraph 1, A composition for encapsulating an organic light-emitting device, wherein the photopolymerization initiator is contained in an amount of 0.1 to 10 wt% based on the total weight of the composition.

16. In paragraph 1, The composition for sealing an organic light-emitting device further comprises at least one additive selected from the group consisting of a surfactant, a curing accelerator, and an antioxidant.

17. An organic light-emitting display device including a sealing portion containing a composition for sealing an organic light-emitting element according to Article 1.

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