WO2017069392A2 - 유기발광소자 봉지용 조성물 및 이로부터 제조된 유기발광소자 표시장치 - Google Patents
유기발광소자 봉지용 조성물 및 이로부터 제조된 유기발광소자 표시장치 Download PDFInfo
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- WO2017069392A2 WO2017069392A2 PCT/KR2016/009430 KR2016009430W WO2017069392A2 WO 2017069392 A2 WO2017069392 A2 WO 2017069392A2 KR 2016009430 W KR2016009430 W KR 2016009430W WO 2017069392 A2 WO2017069392 A2 WO 2017069392A2
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- 238000006073 displacement reaction Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 125000004446 heteroarylalkyl group Chemical group 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine group Chemical group NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 1
- 125000005597 hydrazone group Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 125000003453 indazolyl group Chemical group N1N=C(C2=C1C=CC=C2)* 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 125000001041 indolyl group Chemical group 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000842 isoxazolyl group Chemical group 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004344 phenylpropyl group Chemical group 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 125000000561 purinyl group Chemical group N1=C(N=C2N=CNC2=C1)* 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- ZQTYRTSKQFQYPQ-UHFFFAOYSA-N trisiloxane Chemical compound [SiH3]O[SiH2]O[SiH3] ZQTYRTSKQFQYPQ-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F22/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
- C08F22/10—Esters
- C08F22/12—Esters of phenols or saturated alcohols
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K99/00—Subject matter not provided for in other groups of this subclass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/30—Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety
- C08F220/301—Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety and one oxygen in the alcohol moiety
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present invention relates to a composition for encapsulating an organic light emitting device and an organic light emitting display device manufactured therefrom.
- the organic light emitting diode display includes an organic light emitting diode.
- the organic light emitting device may have poor light emission characteristics when contacted with external moisture and / or oxygen. Therefore, the organic light emitting device should be sealed with a composition for sealing.
- the organic light emitting device is encapsulated in a multilayer structure in which an inorganic barrier layer and an organic barrier layer are sequentially formed.
- the organic barrier layer can be etched by the process of forming the inorganic barrier layer by plasma deposition. In this case, the encapsulation function of the organic barrier layer may be impaired by etching the organic barrier layer.
- the organic light emitting diode may have low luminous properties and may have low reliability.
- a flexible organic light emitting display device has been developed. Therefore, the organic barrier layer should also have good flexibility.
- An object of the present invention is to provide a composition for encapsulating an organic light emitting device that can implement an organic barrier layer excellent in plasma resistance, and can improve the reliability of the organic light emitting device.
- Another object of the present invention is to provide a composition for encapsulating an organic light emitting device, which can implement an organic barrier layer having a low modulus.
- Another object of the present invention is to provide a composition for encapsulating an organic light emitting device that can be applied to a flexible organic light emitting display device.
- Still another object of the present invention is to provide an organic barrier layer having a high light transmittance and providing a composition for encapsulating an organic light emitting device having a high photocurability.
- Still another object of the present invention is to provide a composition for encapsulating an organic light emitting device, in which an organic barrier layer is easily formed by a method such as deposition or inkjet.
- composition for encapsulating an organic light emitting device includes (A) a non-silicone photocurable polyfunctional monomer, (B) a silicon photocurable polyfunctional monomer, (C) a non-silicone photocurable monofunctional monomer, and (D) a silicon photocurable Monofunctional monomer, and (E) initiator, and the (B) silicon-based photocurable polyfunctional monomer may be represented by the following formula (1):
- An organic light emitting device display device of the present invention includes an organic light emitting device and a barrier stack formed on the organic light emitting device and including an inorganic barrier layer and an organic barrier layer, the organic barrier layer encapsulating the organic light emitting device of the present invention. It may be formed into a composition for.
- the present invention provides a composition for encapsulating an organic light emitting device that can implement an organic barrier layer having plasma resistance. Through this, the reliability of the organic light emitting device was improved.
- the present invention provides a composition for encapsulating an organic light emitting device, which can implement an organic barrier layer having a low modulus.
- the present invention provides a composition for encapsulating an organic light emitting device that can be applied to a flexible organic light emitting display device.
- the present invention provides a composition for encapsulating an organic light emitting device having high photocurability. Through this, the organic barrier layer has improved light transmittance.
- the present invention provides a composition for encapsulating an organic light emitting device that is easy to form an organic barrier layer by a method such as deposition or inkjet.
- FIG. 1 is a cross-sectional view of an organic light emitting diode display according to an exemplary embodiment of the present invention.
- FIG. 2 is a cross-sectional view of an organic light emitting diode display according to another exemplary embodiment of the present invention.
- (meth) acryl means acrylic and / or methacryl.
- halogen eg, F, Cl, Br or I
- hydroxy group e.g., hydroxy group
- nitro group cyan
- aryl group means a functional group in which all elements of a cyclic substituent have a p-orbital, and these p-orbitals form conjugation.
- Aryl groups include monocyclic, non-fused polycyclic or fused polycyclic functional groups. In this case, fusion means a ring form in which carbon atoms divide adjacent pairs.
- the aryl group also includes a biphenyl group, terphenyl group, or quarterphenyl group in which two or more aryl groups are linked via a sigma bond.
- the aryl group may mean a phenyl group, biphenyl group, naphthyl group, anthracenyl group, phenanthrenyl group (phenanthrenyl), pyrenyl group, or chrysenyl group.
- heteroaryl group means a functional group containing 1 to 3 heteroatoms selected from the group consisting of N, O, S, P, and Si in the aryl group, and the rest being carbon.
- Heteroaryl groups include those in which two or more heteroaryl groups are directly connected through a sigma bond.
- Heteroaryl groups include those in which two or more heteroaryl groups are fused to each other. When the heteroaryl group is fused, each ring may contain 1 to 3 heteroatoms.
- the heteroaryl group may mean, for example, a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, and the like.
- the C6 to C30 aryl group and / or C3 to C30 heteroaryl group substituted or unsubstituted phenyl group, substituted or unsubstituted naphthyl group, substituted or unsubstituted anthracenyl group, substituted or unsubstituted phenanthryl Groups, substituted or unsubstituted naphthacenyl groups, substituted or unsubstituted pyrenyl groups, substituted or unsubstituted biphenyl groups, substituted or unsubstituted p-terphenyl groups, substituted or unsubstituted m-terphenyl groups, substituted or unsubstituted groups A substituted crysenyl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted peryleneyl group, a substituted or unsubstituted indenyl group, a substituted crys
- non-silicone means not containing silicon (Si).
- photocurable to monomer means a monomer having a vinyl group, an allyl group, and / or a (meth) acrylate group as the photocurable functional group.
- organic light emitting device encapsulation composition may be referred to as “encapsulation composition” or “composition.”
- the "etch rate of the organic barrier layer by plasma” or “plasma etch rate” refers to the initial height (T1, unit: ⁇ m) of the organic barrier layer formed by depositing and photocuring the organic light emitting device encapsulation composition to a predetermined thickness.
- ICP Inductively coupled plasma
- RF radio frequency
- DC bias 200 V
- Ar flow 50 sccm
- etching time 1 min
- pressure The height (T2, unit: mu m) of the organic barrier layer after plasma treatment at 10 mtorr is measured, and is a value calculated by the following equation (2).
- the initial height (T1, unit: ⁇ m) of the organic barrier layer may be about 1 ⁇ m to about 10 ⁇ m: The lower the value calculated by the following equation 2, the better the plasma resistance of the organic barrier layer it means.
- Etch rate (%) of organic barrier layer by plasma (T1-T2) / T1 x 100
- composition for encapsulation an organic light emitting device (hereinafter, referred to as a composition for encapsulation) according to an embodiment of the present invention will be described.
- composition for encapsulation includes (A) a non-silicone photocurable polyfunctional monomer, (B) a silicon-based photocurable polyfunctional monomer, (C) a non-silicone photocurable monofunctional monomer, and (D) a silicone-based A photocurable monofunctional monomer, and (E) initiator, and (B) a silicon-based photocurable polyfunctional monomer may be represented by the following Chemical Formula 1:
- the composition for encapsulation of an embodiment of the present invention includes (A) a non-silicone photocurable polyfunctional monomer, (B) a silicon-based photocurable polyfunctional monomer of Formula 1, (C) a non-silicone photocurable monofunctional monomer, (D) Silicon-based photocurable monofunctional monomer may be included. Therefore, the composition for encapsulation of an embodiment of the present invention can be significantly improved light curing rate. In addition, the composition for encapsulation of an embodiment of the present invention may implement an organic barrier layer having excellent light transmittance after curing and significantly high plasma resistance. Through this, the composition for encapsulation of an embodiment of the present invention can increase the reliability of the organic light emitting device. In addition, the encapsulation composition of an embodiment of the present invention can be used in a flexible display device by implementing an organic barrier layer having a low modulus after curing.
- the composition for encapsulation of an embodiment of the present invention may have a photocurability of about 88% or more, for example, about 88% to about 99%.
- the sealing composition of an embodiment of the present invention may have a light transmittance of about 93% or more, for example, about 93% to about 100% at a wavelength of 380nm to 700nm after curing.
- the encapsulation composition of an embodiment of the present invention has an etching rate of the organic barrier layer by plasma after curing is about 10% or less, for example, about 0.1% to about 10%, about 0.1% to about 9%, about 0.1% to About 8%.
- the encapsulation composition of an embodiment of the present invention may have a Young's modulus (Elastic modulus) of less than 6.5 GPa, specifically about 0.1 GPa to about 6 GPa, after curing.
- Young's modulus Elastic modulus
- the reliability of the organic light emitting device can be remarkably increased in the photocuring rate and the etching rate range of the organic barrier layer by plasma, and can be used in an organic light emitting display device. Within the modulus range, the flexible organic light emitting diode display may be used.
- non-silicone photocurable polyfunctional monomer (B) silicon photocurable polyfunctional monomer of the formula (1), (C) non-silicone photocurable monofunctional monomer, (D) silicone photocurable monofunctional monomer And (E) initiators are each different compounds. These may be included individually or in mixture of 2 or more types, respectively.
- the composition for encapsulation is based on the total weight of (A), (B), (C), (D) and (E), the (A) non-silicone photocurable polyfunctional monomer is about 10 And from about 20% to about 70% by weight of (B) the silicon-based photocurable polyfunctional monomer, and about 5% by weight of the (C) non-silicone photocurable monofunctional monomer.
- (D) silicon-based photocurable monofunctional monomer is included in about 1% to about 50% by weight
- (E) initiator may comprise from about 1% to about 10% by weight have.
- the (A) non-silicone photocurable polyfunctional monomer may be a photocurable monomer having two or more specifically two to six photocurable functional groups.
- the (A) non-silicone photocurable polyfunctional monomer may be a non-silicone di (meth) acrylate.
- the non-silicone di (meth) acrylate has a low viscosity of 25 ° C. to lower the viscosity of the encapsulation composition, thereby facilitating the formation of an organic barrier layer by a method such as inkjet.
- the (A) non-silicone photocurable polyfunctional monomer is a non-aromatic system not containing an aromatic group, and may include a non-silicone di (meth) acrylate including a substituted or unsubstituted long chain alkylene group.
- the composition for encapsulation may be easy to form the organic barrier layer on the organic light emitting device or the inorganic barrier layer encapsulating the organic light emitting device by a method such as deposition.
- the non-silicone photocurable polyfunctional monomer is a di (meth) acrylate having a substituted or unsubstituted C1 to C30 alkylene group, more specifically, an unsubstituted between (meth) acrylate groups Di (meth) acrylate having an alkylene group of C1 to C15.
- the carbon number of the alkylene group means only the carbon number in the alkylene group itself except for the carbon in the di (meth) acrylate group.
- non-silicone di (meth) acrylate may be represented by Formula 2:
- R 3 , R 4 are each independently hydrogen or a methyl group
- R 5 is a substituted or unsubstituted C1 to C30 alkylene group).
- the composition for encapsulation of the present invention includes a non-silicone photocurable polyfunctional monomer represented by Chemical Formula 2, which may further increase the photocuring rate, and may be easier to deposit due to a lower viscosity.
- R 5 may be an unsubstituted C4 to C30, preferably an unsubstituted C6 to C20, more preferably an unsubstituted C6 to C12 alkylene group.
- the non-silicone di (meth) acrylate is butanedioldi (meth) acrylate.
- the non-silicone photocurable polyfunctional monomer is about 10% to about 50% by weight based on the total weight of (A), (B), (C), (D) and (E), for example about 10 Wt% to about 30%, about 10%, about 11%, about 12%, about 13%, about 14%, about 15%, about 16%, about 17%, about 18 Weight%, About 19%, About 20%, About 21%, About 22%, About 23%, About 24%, About 25%, About 26%, About 27%, About 28 Weight percent, about 29 weight percent, or about 30 weight percent.
- the light curing rate of the composition for encapsulation may be improved, and an organic barrier layer having a high light transmittance and a low plasma etching rate may be realized.
- the silicon-based photocurable polyfunctional monomer (B) contains at least one or more substituted or unsubstituted C6 to C30 aryl groups linked to silicon atoms.
- the composition for encapsulating the organic light emitting device may realize a high organic barrier layer having a low plasma etch rate due to significantly high resistance to plasma.
- the silicon-based photocurable polyfunctional monomer (B) is a silicone-based di (meth) acrylate, and may be represented by the following Chemical Formula 1:
- R 1 and R 2 are each independently a single bond, a substituted or unsubstituted C 1 to C 20 alkylene group, * -N (R ′)-(R ′′)-* (* is the linking site of the element, R ′ is Hydrogen or a substituted or unsubstituted C1 to C30 alkyl group, R "is a substituted or unsubstituted C1 to C20 alkylene group), a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C7 to C30 Or an arylalkylene group, or *-(R ')-O-**, where * is a linking site for O in Formula 1, ** is a linking site for Si in Formula 1, and R' is substituted or unsubstituted C1 to C30 alkylene group),
- X 1 , X 2 , X 3 , X 4 , X 5 , X 6 are each independently hydrogen, hydroxyl, halogen, cyano group, substituted or unsubstituted C1 to C30 alkyl group, substituted or unsubstituted C1 to C30 A heterocycloalkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, * -N (R ') (R ") (* is a linking site of the element, R' And R ′′ are each independently hydrogen or substituted or unsubstituted C1 to C30 alkyl group), substituted or unsubstituted C1 to C30 alkylsulphide group, substituted or unsubstituted C6 to C30 aryl group, substituted or Unsubstituted C2 to C30 heteroaryl group, or substituted or unsubsti
- At least one of X 1 , X 2 , X 3 , X 4 , X 5 , X 6 is a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group,
- R 3 and R 4 are each independently hydrogen or a methyl group
- n is 0 To An integer of 30 or an average value of n is 0 to 30).
- the "single bond” means that Si and O in Formula 1 is directly connected (Si-O).
- R 1 , R 2 are independently of each other, a single bond, a substituted or unsubstituted C1 to C20 alkylene group, or *-(R ')-O-** (where * is Linking site for O in Formula 1, ** may be a linking site for Si in Formula 1, R 'is a substituted or unsubstituted C1 to C30 alkylene group).
- X 1 , X 2 , X 3 , X 4 , X 5 , X 6 are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, substituted or unsubstituted C1 to C30 alkoxy group, substituted or unsubstituted C6 to C30 aryl group, substituted or unsubstituted C2 to C30 heteroaryl group, or substituted or unsubstituted C7 to C30 is an arylalkyl group, and at least one of X 1 , X 2 , X 3 , X 4 , X 5 , and X 6 may be a substituted or unsubstituted C6 to C30 aryl group.
- R 1 , R 2 may be each independently a single bond or a substituted or unsubstituted C1 to C20 alkylene group. In this case, the plasma etch rate may be further lowered.
- X 1 , X 2 , X 3 , X 4 , X 5 , X 6 are each independently a substituted or unsubstituted C1 to C10 alkyl group, or a substituted or unsubstituted C6 to C10 It is an aryl group, and one or more of X 1 , X 2 , X 3 , X 4 , X 5 , X 6 may be a substituted or unsubstituted C6 to C10 aryl group.
- X 1 , X 2 , X 3 , X 4 , X 5 , X 6 may each independently be a methyl group, ethyl group, propyl group, butyl group, pentyl group, phenyl group, biphenyl group, or naphthyl group And one, two, three or six of X 1 , X 2 , X 3 , X 4 , X 5 , X 6 may be a phenyl group or a naphthyl group.
- the plasma etch rate may be further lowered. More specifically, n can be an integer from 1 to 5. In this case, the plasma etch rate may be further lowered.
- n 1 To It may be an integer of 30.
- the silicone-based di (meth) acrylate may be represented by any one of the following Chemical Formulas 3 to 9.
- the silicone-based polyfunctional photocurable monomer is about 20% to about 70% by weight, specifically about 25% by weight, based on the total weight of (A), (B), (C), (D) and (E) To about 65%, about 25% to about 60%, about 25% to about 50%, about 25% to about 45%, about 21%, about 22%, about 23% , About 24%, about 25%, about 26%, about 27%, about 28%, about 29%, about 30%, about 31%, about 32%, about 33% , About 34%, about 35%, about 36%, about 37%, about 38%, about 39%, about 40%, about 41%, about 42%, about 43% , About 44%, about 45%, by weight.
- the light curing rate of the encapsulation composition may be increased, the light transmittance of the organic barrier layer may be increased, and the plasma etching rate may be lowered.
- the sum of (A) non-silicone photocurable polyfunctional monomers and (B) siliconic photocurable polyfunctional monomers is approximately based on the total weight of (A), (B), (C), (D) and (E).
- an organic barrier layer having a low plasma etch rate may be implemented.
- (B-silicone photocurable polyfunctional monomer can be prepared by a conventional method.
- (B-silicone photocurable polyfunctional monomer is substituted or unsubstituted C6 to C30 aryl group or substituted or unsubstituted C2 to
- the heteroaryl group of C30 may be prepared by reacting a siloxane compound linked to one or more silicon atoms with a compound (e.g. allyl alcohol) that extends a carbon chain, followed by reacting (meth) acryloylchloride, but is not limited thereto.
- (B-silicone photocurable polyfunctional monomer is a (meth) acryloyl and a siloxane compound in which a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group is connected with at least one silicon atom. It can be prepared by reacting the chloride, but is not limited thereto.
- the (C) non-silicone photocurable monofunctional monomer can raise the photocurability of the composition for sealing, and can raise the light transmittance of an organic barrier layer.
- the non-silicone photocurable monofunctional monomer is a non-silicone mono (meth) acrylate, which is an aromatic mono (meth) acrylate having an aromatic group and a non-aromatic mono (meth) acrylate having no aromatic group. It may include one or more.
- the aromatic mono (meth) acrylates have all aromatic groups as in the above-mentioned (B) silicon-based photocurable polyfunctional monomer, and when used together, the compatibility in the composition for encapsulating an organic light emitting device may be particularly excellent.
- the aromatic mono (meth) acrylate can further increase the miscibility with the aforementioned (B) silicon-based photocurable polyfunctional monomer.
- the composition for encapsulation may be more excellent in significantly lowering the plasma etch rate of the organic barrier layer.
- the aromatic mono (meth) acrylate may include a mono (meth) acrylate having a substituted or unsubstituted aromatic group.
- the 'aromatic group' may include a monocyclic or fused form, and the like. It means a polycyclic aromatic group, or a form in which a single ring is connected by a sigma bond.
- the aromatic group is substituted or unsubstituted C6 to C50 aryl group, substituted or unsubstituted C7 to C50 arylalkyl group, substituted or unsubstituted C3 to C50 heteroaryl group, substituted or unsubstituted C3 to It may mean one or more of the heteroarylalkyl group of C50.
- the aromatic group is phenyl, biphenyl, terphenyl, quarterphenyl, naphthyl, anthracenyl, phenanthrenyl, chrysenyl, triphenylenyl, tetrasenyl, pyrenyl, benzopyrenyl, pentaxenyl, coronyl , Ovalenyl, coranulenyl, benzyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, acridinyl, quinazolinyl, shin Norinyl, phthalazinyl, thiazolyl, benzothiazolyl, isoxazolyl, benzisoxazolyl, oxazolyl, benzoxazolyl, pyrazolyl, indazo
- aromatic mono (meth) acrylate may be represented by the following Chemical Formula 10:
- R 3 is hydrogen or a methyl group, s is an integer of 0 to 10,
- R 6 is a substituted or unsubstituted C6 to C50 aryl group or a substituted or unsubstituted C6 to C50 aryloxy group).
- R 6 is a phenylphenoxyethyl group, phenoxyethyl group, benzyl group, phenyl group, phenylphenoxy group, phenoxy group, phenylethyl group, phenylpropyl group, phenylbutyl group, methylphenylethyl group, propylphenylethyl group, methoxyphenylethyl group , Cyclohexylphenylethyl group, chlorophenylethyl group, bromophenylethyl group, methylphenyl group, methylethylphenyl group, methoxyphenyl group, propylphenyl group, cyclohexylphenyl group, chlorophenyl group, bromophenyl group, phenylphenyl group, biphenyl group, terphenyl (terphenyl ), Quaterphenyl, anthracenyl, naphthal
- the aromatic mono (meth) acrylate is 2-phenylphenoxyethyl (meth) acrylate, phenoxyethyl (meth) acrylate, phenyl (meth) acrylate, phenoxy (meth) acrylate, 2- Ethylphenoxy (meth) acrylate, benzyl (meth) acrylate, 2-phenylethyl (meth) acrylate, 3-phenylpropyl (meth) acrylate, 4-phenylbutyl (meth) acrylate, 2- (2 -Methylphenyl) ethyl (meth) acrylate, 2- (3-methylphenyl) ethyl (meth) acrylate, 2- (4-methylphenyl) ethyl (meth) acrylate, 2- (4-propylphenyl) ethyl (meth) Acrylate, 2- (4- (1-methylethyl) phenyl) ethyl (meth)
- the (meth) acrylates mentioned in the present invention are not limited to the examples, but the present invention further includes all the acrylates in the structural isomer relationship.
- the present invention includes both 3-phenylethyl (meth) acrylate and 4-phenyl (meth) acrylate.
- Non-aromatic mono (meth) acrylates may be mono (meth) acrylates having substituted or unsubstituted C1 to C20 alkyl groups.
- the non-aromatic mono (meth) acrylate is a mono (meth) acrylate having an unsubstituted linear C1 to C20 alkyl group, more specifically an unsubstituted straight C10 to C20 alkyl group. It can be a mono (meth) acrylate having.
- non-aromatic mono (meth) acrylates include decyl (meth) acrylate, undecyl (meth) acrylate, lauryl (meth) acrylate, tridecyl (meth) acrylate, tetradecyl (meth ) Acrylate, pentadecyl (meth) acrylate, hexadecyl (meth) acrylate, heptadecyl (meth) acrylate, octadecyl (meth) acrylate, nonadecyl (meth) acrylate, arachidyl (meth) acrylic It may include, but is not limited to, one or more of the rates.
- the non-silicone photocurable monofunctional monomer is about 5% to about 50% by weight, specifically about 5, based on the total weight of (A), (B), (C), (D) and (E) Wt% to about 45 wt%, about 5 wt% to about 40 wt%, about 5 wt% to about 35 wt%, about 5 wt% to about 30 wt%, about 15 wt% to about 35 wt%, about 5 Weight%, About 6%, About 7%, About 8%, About 9%, About 10%, About 11%, About 12%, About 13%, About 14%, About 15 Weight%, about 16%, about 17%, about 18%, about 19%, about 20%, about 21%, about 22%, about 23%, about 24%, about 25 Weight%, About 26%, About 27%, About 28%, About 29%, About 30%, About 31%, About 32%, About 33%, About 34%, About 35 It may be included in weight percent.
- the silicon-based photocurable monofunctional monomer (D) can make the sealing composition usable in a flexible organic light emitting display device by lowering the modulus of the organic barrier layer after curing of the sealing composition.
- the silicone-based photocurable monofunctional monomer (D) is a silicone-based mono (meth) acrylate, and may be represented by the following Chemical Formula 11:
- R 3 is hydrogen or a methyl group
- n is an integer of 1 or more
- Y 1 , Y 2 and Y 3 are the same or different and are substituted or unsubstituted C 1 to C 30 alkyl groups, substituted or unsubstituted C 1 to C 30 alkoxy groups, substituted or unsubstituted C 6 to C 20 aryloxy groups, substituted Or an unsubstituted C1 to C30 dialkylamine group, a substituted or unsubstituted C1 to C30 alkylsulfide group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C7 to C30 arylalkyl group Or the following general formula (12).
- n is an integer of 1 or more
- Z 1 , Z 2 and Z 3 are the same or different and substituted or unsubstituted C1 to C30 alkyl group, substituted or unsubstituted C1 to C30 alkoxy group, substituted or unsubstituted C6 to C20 aryloxy group, substituted Or unsubstituted C1 to C30 dialkylamine group, substituted or unsubstituted C1 to C30 alkylsulphide group, substituted or unsubstituted C6 to C30 aryl group, or substituted or unsubstituted C7 to C30 aryl It is an alkyl group.
- n and m may each be an integer of 1 to 10.
- at least one of Y 1 , Y 2 and Y 3 is It may include a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C7 to C30 arylalkyl group.
- Y 1 , Y 2 and Y 3 are each independently a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C10 aryl group, or Z 1 , Z 2 and Z 3 are each independently Substituted or unsubstituted C1 to C10 Alkyl group It may be of Formula 12 which is preferably a substituted or unsubstituted C1 to C5 alkyl group, or a substituted or unsubstituted C6 to C10 aryl group. In one embodiment, one or more of Y 1 , Y 2 and Y 3 may be of Chemical Formula 12.
- Formula 11 when Y 1 , Y 2 or Y 3 is Formula 12, and m is 2 or more, the same Formula 12 may be included or different Formula 12 may be included as in Formula 13 below.
- the silicon-based photocurable monofunctional monomer may include one or more of the following Chemical Formulas 13 to 17:
- (D) Silicone type photocurable monofunctional monomer can be manufactured by a conventional method.
- the (D) silicon-based photocurable monofunctional monomer may be prepared by reacting an allyl alcohol with a predetermined siloxane compound and then reacting (meth) acryloyl chloride, but is not limited thereto.
- the silicon-based photocurable monofunctional monomer is about 1% to about 50% by weight, specifically about 1% by weight, based on the total weight of (A), (B), (C), (D) and (E) To about 50 weight percent, about 1 weight percent to about 45 weight percent, about 1 weight percent to about 40 weight percent, about 1 weight percent to about 35 weight percent, about 1 weight percent to about 30 weight percent, about 1 weight percent To about 25%, about 10% to about 30%, about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7% by weight , About 8%, about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, about 15%, about 16%, about 17% , About 18%, about 19%, about 20%, about 21%, about 22%, about 22%, about 23%, about 24%, about 25%, about 26% , About 27%, about 28%, about 29%, about 30%, about 31%, about 32%, about 33%, about 34%, about
- (E) Initiator (A) non-silicone photocurable polyfunctional monomer, (B) silicon photocurable polyfunctional monomer of the formula (1), (C) non-silicone photocurable monofunctional monomer, (D) silicone photocurable end By hardening a functional monomer, it can form an organic barrier layer, and can contain a normal photoinitiator without limitation.
- the initiator may include, but is not limited to, one or more of triazine initiators, acetophenone initiators, benzophenone initiators, thioxanthone initiators, benzoin initiators, phosphorus initiators, and oxime initiators.
- triazine initiators acetophenone initiators
- benzophenone initiators thioxanthone initiators
- benzoin initiators phosphorus initiators
- phosphorus initiators diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide
- benzyl (diphenyl) phosphine oxide bis (2,6-dimethoxybenzoyl) (2,4, 4-trimethylpentyl) phosphine oxide or mixtures thereof.
- the use of phosphorus-based initiators may exhibit better onset performance at long wavelength UV in the compositions of the present invention.
- the initiator is about 1% to about 10% by weight, specifically about 1% to about 5% by weight based on the total weight of (A), (B), (C), (D) and (E) May be included as a%.
- the encapsulation composition may sufficiently generate photopolymerization upon exposure, reduce unreacted initiator remaining after photopolymerization, and further improve light transmittance of the organic barrier layer.
- the composition for sealing can be formed by the solventless type which does not contain a solvent.
- the weight percent is based on the total weight of (A), (B), (C), (D) and (E).
- the composition for encapsulation has a viscosity of about 0 cps to about 200 cps, specifically about 100 cps or less, more specifically about 5 cps to about 50 cps, about 5 cps to about 40 cps or about 5 cps to about 25 ° C. ⁇ 2 ° C. (23 ° C. to 27 ° C.). It can be 30cps.
- the composition for encapsulation in the above range may facilitate the formation of the organic barrier layer, it may be advantageous to perform a method such as deposition, inkjet at the time of forming the organic barrier layer.
- the encapsulation composition is a photocurable composition, which may be cured by irradiation for about 1 second to about 100 seconds at about 10 mW / cm 2 to about 500 mW / cm 2 at UV wavelength, but is not limited thereto.
- the encapsulation composition can be used to encapsulate an organic light emitting device.
- the composition for encapsulation can be used in a flexible organic light emitting diode display as well as a non-flexible organic light emitting diode display.
- the composition for encapsulation is decomposed by permeation of chemicals used in processing into a gas or liquid in the surrounding environment, for example as a device for a device, in particular a display device, such as oxygen and / or moisture in the atmosphere and / or water vapor and electronics. It can also be used for encapsulation of device members which may be defective.
- the device member may be a device such as a lighting device, a metal sensor pad, a microdisk laser, an electrochromic device, a photochromic device, a microelectromechanical system, a solar cell, an integrated circuit, a charge coupling device, a light emitting polymer, a light emitting diode, or the like. It may also be used in the structure, but is not limited thereto.
- composition for encapsulating an organic light emitting device according to another embodiment of the present invention.
- the composition for encapsulating an organic light emitting device includes (A) a non-silicone photocurable polyfunctional monomer, (B) a silicon photocurable polyfunctional monomer, (C) a non-silicone photocurable monofunctional monomer, and (D) a silicone-based It includes a photocurable monofunctional monomer, (E) initiator and (F) thermal stabilizer, wherein the (B) silicon-based photocurable polyfunctional monomer may be represented by the formula (1).
- the composition for encapsulating an organic light emitting device can suppress a change in viscosity at room temperature of the composition for encapsulation.
- the composition for encapsulating the organic light emitting device of the present embodiment may further increase the light transmittance and the photocuring rate and lower the plasma etch rate as compared to the encapsulation composition containing no heat stabilizer. Except for further comprising a heat stabilizer is the same as the composition for encapsulating the organic light emitting device of an embodiment of the present invention. Therefore, hereinafter, only the thermal stabilizer will be described.
- the heat stabilizer is included in the composition for encapsulation to suppress the change in viscosity at room temperature of the encapsulation composition, and ordinary heat stabilizers can be used without limitation. Phenolic heat stabilizers can be used. Specifically, (F) the heat stabilizer is pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], stearyl-3- (3,5-di -t-butyl-4-hydroxyphenyl) propionate, 1,3,5-tris (2,6-dimethyl-3-hydroxy-4-t-butylbenzyl) isocyanurate, 1,3, 5-tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate, 1,3,5-tris (2-hydroxyethyl) isocyanurate, pentaerythritol tetrakis [ 3- (3,5-di-t-butyl-4
- the thermal stabilizer is about 2000 ppm or less, specifically about 0.01 ppm to about 2000 ppm, more specifically about 100 ppm to about, based on the total weight of (A), (B), (C), (D) and (E) It can be included as 800 ppm.
- the heat stabilizer in the above range can further improve the storage stability and fairness of the liquid state of the composition for sealing.
- the organic light emitting diode display of the present invention may include an organic barrier layer formed of the composition for encapsulating the organic light emitting diode according to the embodiment of the present invention.
- the organic light emitting diode display includes an organic light emitting diode, and a barrier stack formed on the organic light emitting diode and including an inorganic barrier layer and an organic barrier layer, wherein the organic barrier layer is a composition for encapsulating an organic light emitting diode according to an embodiment of the present invention. It can be formed as. As a result, the organic light emitting display device can be excellent in reliability.
- the organic barrier layer may be formed by the inkjet or deposition method of the composition for encapsulating the organic light emitting device.
- FIG. 1 is a cross-sectional view of an organic light emitting diode display according to an exemplary embodiment of the present invention.
- an organic light emitting diode display 100 is formed on a substrate 10, an organic light emitting diode 20 formed on the substrate 10, and an organic light emitting diode 20 and an inorganic barrier.
- a barrier stack 30 comprising a layer 31 and an organic barrier layer 32, wherein the inorganic barrier layer 31 is in contact with the organic light emitting element 20 and the organic barrier layer 32.
- the organic light emitting device may be formed of the composition for encapsulation of the embodiments of the present invention.
- the substrate 10 is not particularly limited as long as it is a substrate on which the organic light emitting diode may be formed.
- it may be made of a material such as transparent glass, plastic sheet, silicon or metal substrate.
- the organic light emitting diode 20 includes an organic light emitting film formed between the first electrode, the second electrode, the first electrode, and the second electrode.
- the light emitting film may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer sequentially stacked, but is not limited thereto.
- the barrier stack 30 may include an organic barrier layer and an inorganic barrier layer, and the organic barrier layer and the inorganic barrier layer may have different components constituting the layers, respectively, to implement an organic light emitting device encapsulation function.
- the inorganic barrier layer may have different components from the organic barrier layer, thereby compensating the effect of the organic barrier layer.
- the inorganic barrier layer may be formed of an inorganic material having excellent light transmittance and excellent moisture and / or oxygen barrier properties.
- the inorganic barrier layer may be a metal, nonmetal, intermetallic compound or alloy, nonmetal intermetallic compound or alloy, oxide of metal or nonmetal, fluoride of metal or nonmetal, nitride of metal or nonmetal, carbide of metal or nonmetal, carbide of metal or nonmetal Oxygen nitrides of base metals, borides of metals or base metals, oxygen borides of metals or base metals, silicides of metals or base metals, or mixtures thereof.
- Metals or nonmetals include silicon (Si), aluminum (Al), selenium (Se), zinc (Zn), antimony (Sb), indium (In), germanium (Ge), tin (Sn), bismuth (Bi), transitions Metal, lanthanide metal, and the like, but is not limited thereto.
- the inorganic barrier layer may include AlOx, In 2 O 3 , including silicon oxide (SiOx), silicon nitride (SiNx), silicon oxygen nitride (SiOxNy), ZnSe, ZnO, Sb 2 O 3 , Al 2 O 3 , and the like. SnO 2 can be.
- the inorganic barrier layer can be deposited by a plasma process, a vacuum process such as sputtering, chemical vapor deposition, plasma chemical vapor deposition, evaporation, sublimation, electron cyclotron resonance-plasma vapor deposition, and combinations thereof.
- the inorganic barrier layer may each have a thickness of about 40 nm to about 1000 nm, specifically about 100 nm to about 1000 nm.
- the smoothing property of the inorganic barrier layer can be ensured, and defects of the inorganic barrier layer can be prevented from propagating to another inorganic barrier layer.
- the organic barrier layer may be formed by deposition, inkjet, screen printing, spin coating, blade coating, curing alone, or a combination thereof, of the composition for encapsulating the organic light emitting device according to the embodiment of the present invention.
- the composition for encapsulating the organic light emitting device may be coated with a thickness of about 1 ⁇ m to about 50 ⁇ m, and may be cured by irradiation at about 10 mW / cm 2 to about 500 mW / cm 2 for about 1 second to about 100 seconds.
- the organic barrier layer may have a thickness of about 1 ⁇ m to about 50 ⁇ m, respectively.
- the barrier stack includes an organic barrier layer and an inorganic barrier layer, but the total number of organic barrier layers and inorganic barrier layers is not limited.
- the total number of organic barrier layers and inorganic barrier layers may vary depending on the level of permeation resistance to oxygen and / or moisture and / or water vapor and / or chemicals.
- the total number of organic barrier layers and inorganic barrier layers may be 10 layers or less, for example, 2 to 7 layers, specifically, an inorganic barrier layer / organic barrier layer / inorganic barrier layer / organic barrier layer / It may be formed of seven layers in the order of the inorganic barrier layer / organic barrier layer / inorganic barrier layer.
- the organic barrier layer and the inorganic barrier layer may be deposited alternately. This is due to the effect on the organic barrier layer produced due to the physical properties of the above-described composition. As a result, the organic barrier layer and the inorganic barrier layer can complement or enhance the sealing effect on the device.
- FIG. 2 is a cross-sectional view of an organic light emitting diode display according to another exemplary embodiment of the present invention.
- the organic light emitting diode display 200 is formed on the substrate 10, the organic light emitting diode 20 formed on the substrate 10, and the organic light emitting diode 20 and an inorganic barrier.
- a barrier stack 30 comprising a layer 31 and an organic barrier layer 32, the inorganic barrier layer 31 encapsulating an internal space 40 in which the organic light emitting element 20 is accommodated, and the organic barrier layer 32 may be formed of the organic light emitting device encapsulation composition of the embodiments of the present invention. Except that the inorganic barrier layer is not in contact with the organic light emitting device is substantially the same as the organic light emitting display device of an embodiment of the present invention.
- Non-silicone photocurable polyfunctional monomer (A1) 1, 12- dodecane diol dimethacrylate (Sartomer), (A2) 1, 6- hexanediol dimethacrylate (Sartomer)
- Non-silicone photocurable monofunctional monomer 2-phenylphenoxyethyl acrylate (Hitach Chemical Co., Ltd.)
- Initiator takeover initiator, Darocur TPO (BASF)
- Example 1 Except for changing the type and / or content of (A), (B), (C), (D), and (E) in Example 1 as shown in Table 1 (unit: parts by weight) below. In the same manner as in the composition for encapsulation was prepared.
- Table 1 The physical properties of Table 1 were measured for the compositions for encapsulation prepared in Examples, Comparative Examples, and Reference Examples, and the results are shown in Table 1.
- the composition for encapsulating the organic light emitting device according to the present invention can improve the reliability of the organic light emitting device by implementing an organic barrier layer having a high photocurability and a high light transmittance and a low etching rate for plasma.
- the encapsulation composition of the present invention can be used in a flexible display device by implementing an organic barrier layer having a low modulus.
- Comparative Examples 1 and 2 which do not include any one of (A), (B) and (C) in the organic light emitting device encapsulation composition of the present invention, the plasma etching rate is high or the modulus is high.
- Reference Example 1 not including (D) implements an organic barrier layer having a somewhat higher plasma etch rate.
- Modulus The composition for encapsulation was formed into a predetermined thickness and cured under UV conditions with a wavelength of 395 nm and 500 mJ to prepare an organic barrier layer having a thickness of 30 ⁇ m, thereby preparing a specimen for modulus measurement. Modulus was measured on the specimen with a Nano indentor G200 (Agilent). Modulus is applied to nano indenter at room temperature (20 °C -25 °C) under Experimental mode: Indentation Mode (using Berkovitz), Control mode: Force control, Maximum force: 60 ⁇ N (0213-TJ: 54 ⁇ N with 100nm displacement control). The specimens were measured under conditions of loading for 5 seconds, holding for 2 seconds, and then unloading for 5 seconds.
- the composition for encapsulation is sprayed onto the glass substrate and irradiated with 100 mW / cm 2 for 10 seconds to UV cured to obtain a 20 cm x 20 cm x 3 ⁇ m (width x length x thickness) specimen.
- A is the ratio of the intensity of the absorption peak in the vicinity of 1635 cm -1 to the intensity of the absorption peak in the vicinity of 1720 cm -1 for the cured film
- B is the ratio of the intensity of the absorption peak in the vicinity of 1635 cm ⁇ 1 to the intensity of the absorption peak in the vicinity of 1720 cm ⁇ 1 for the composition for encapsulation).
- Plasma etch rate The composition for sealing was vapor-deposited and photocured to predetermined thickness, and the deposition height (T1, 1 micrometer-10 micrometers) of the organic sealing layer was measured. ICP power: 2500W, RF power: 300W, DC bias: 200V, Ar flow: 50sccm, ethching time: 1min, pressure: 10mtorr after plasma treatment of organic barrier layer, height of organic barrier layer (T2, unit: ⁇ m) was measured. The etch rate of the organic barrier layer by plasma was calculated by Equation 2.
- Etch rate (%) of organic barrier layer by plasma (T1-T2) / T1 x 100
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Abstract
Description
실시예 | 비교예 | 참고예 | |||||||
1 | 2 | 3 | 4 | 5 | 1 | 2 | 1 | ||
(A) | (A1) | 19 | 19 | 19 | - | - | 68 | 39 | 39 |
(A2) | - | - | - | 19 | 19 | - | - | - | |
(B) | (B1) | - | 29 | - | 29 | - | - | 29 | 29 |
(B2) | 29 | - | 29 | - | 29 | - | - | - | |
(C) | 29 | 29 | 29 | 29 | 29 | 29 | - | 29 | |
(D) | (D1) | 20 | - | - | 20 | 20 | - | 29 | - |
(D2) | - | 20 | 20 | - | - | - | - | - | |
(E) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
모듈러스(GPa) | 4.5 | 5.3 | 3.5 | 5.4 | 4 | 11.2 | 4.3 | 6.9 | |
광경화율(%) | 93.2 | 92.3 | 91.5 | 93.2 | 92.1 | 93.2 | 91.2 | 92.3 | |
플라즈마 식각률(%) | 7.6 | 6.6 | 7.4 | 6.3 | 7.2 | 7.6 | 13.5 | 7.2 |
Claims (12)
- (A)비-실리콘계 광경화성 다관능 모노머, (B)실리콘계 광경화성 다관능 모노머, (C)비-실리콘계 광경화성 단관능 모노머, (D)실리콘계 광경화성 단관능 모노머, 및 (E)개시제를 포함하고,상기 (B) 실리콘계 광경화성 다관능 모노머는 하기 화학식 1로 표시되는 것인,유기발광소자 봉지용 조성물:<화학식 1>(상기 화학식 1에서,R1, R2는 서로 독립적으로, 단일 결합, 치환 또는 비치환된 C1 내지 C20의 알킬렌기, *-N(R')-(R")-*(*는 원소의 연결 부위, R'은 수소, 또는 치환 또는 비치환된 C1 내지 C30의 알킬기, R"은 치환 또는 비치환된 C1 내지 C20의 알킬렌기), 치환 또는 비치환된 C6 내지 C30의 아릴렌기, 치환 또는 비치환된 C7 내지 C30의 아릴알킬렌기, 또는 *-(R')-O-**(이때, *는 화학식 1에서 O에 대한 연결부위, **는 화학식 1에서 Si에 대한 연결 부위, R'은 치환 또는 비치환된 C1 내지 C30의 알킬렌기)이고,X1, X2, X3, X4, X5, X6는 각각 독립적으로, 수소, 수산기, 할로겐, 시아노기, 치환 또는 비치환된 C1 내지 C30의 알킬기, 치환 또는 비치환된 C1 내지 C30의 헤테로시클로알킬기, 치환 또는 비치환된 C3 내지 C30의 시클로알킬기, 치환 또는 비치환된 C1 내지 C30의 알콕시기 *-N(R')(R")(*는 원소의 연결 부위, R' 및 R"은 각각 독립적으로, 수소 또는 치환 또는 비치환된 C1 내지 C30의 알킬기), 치환 또는 비치환된 C1 내지 C30의 알킬술파이드기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기, 또는 치환 또는 비치환된 C7 내지 C30의 아릴알킬기이고,X1, X2, X3, X4, X5, X6 중 하나 이상은 치환 또는 비치환된 C6 내지 C30의 아릴기, 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기이고,R3, R4는 각각 독립적으로, 수소 또는 메틸기이고,n은 0 내지 30의 정수이거나, n의 평균값은 0 내지 30이다).
- 제1항에 있어서, 상기 화학식 1에서,R1, R2는 서로 독립적으로, 단일 결합, 치환 또는 비치환된 C1 내지 C20의 알킬렌기, 또는 *-(R')-O-**(이때, *는 화학식 1에서 O에 대한 연결부위, **는 화학식 1에서 Si에 대한 연결 부위, R'은 치환 또는 비치환된 C1 내지 C30의 알킬렌기)이고 X1, X2, X3, X4, X5, X6는 각각 독립적으로, 수소, 치환 또는 비치환된 C1 내지 C30의 알킬기, 비치환된 C3 내지 C30의 시클로알킬기, 치환 또는 비치환된 C1 내지 C30의 알콕시기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기, 또는 치환 또는 비치환된 C7 내지 C30의 아릴알킬기이고,X1, X2, X3, X4, X5, X6 중 하나 이상은 치환 또는 비치환된 C6 내지 C30의 아릴기인 것인, 유기발광소자 봉지용 조성물.
- 제1항에 있어서, 상기 (C)비-실리콘계 광경화성 단관능 모노머는 방향족계 모노(메트)아크릴레이트를 포함하는 것인, 유기발광소자 봉지용 조성물.
- 제1항에 있어서, 상기 (D)실리콘계 광경화성 단관능 모노머는 하기 화학식 11로 표시되는 것인, 유기발광소자 봉지용 조성물:<화학식 11>(상기 화학식 11에서, R3은 수소 또는 메틸기,n은 1 이상의 정수,Y1, Y2 및 Y3은 동일하거나 다르고, 치환 또는 비치환된 C1 내지 C30의 알킬기, 치환 또는 비치환된 C1 내지 C30의 알콕시기, 치환 또는 비치환된 C6 내지 C20의 아릴옥시기, 치환 또는 비치환된 C1 내지 C30의 디알킬아민기, 치환 또는 비치환된 C1 내지 C30의 알킬술파이드기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 치환 또는 비치환된 C7 내지 C30의 아릴알킬기, 또는 하기 화학식 12이다<화학식 12>(상기 화학식 12에서, *는 화학식 11의 Si에 대한 연결 부위이고, m은 1 이상의 정수이고, Z1, Z2 및 Z3은 동일하거나 다르고, 치환 또는 비치환된 C1 내지 C30의 알킬기, 치환 또는 비치환된 C1 내지 C30의 알콕시기, 치환 또는 비치환된 C6 내지 C20의 아릴옥시기, 치환 또는 비치환된 C1 내지 C30의 디알킬아민기, 치환 또는 비치환된 C1 내지 C30의 알킬술파이드기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 또는 치환 또는 비치환된 C7 내지 C30의 아릴알킬기이며,Y1, Y2 또는 Y3이 상기 화학식 12이고 m이 2 이상인 경우 동일한 상기 화학식 12가 포함되거나 또는 서로 다른 상기 화학식 12가 포함될 수도 있다).
- 제1항에 있어서, 상기 (A),(B),(C),(D) 및 (E)의 총 중량을 기준으로, 상기 (A) 비-실리콘계 광경화성 다관능 모노머는 약 10중량% 내지 약 50중량%로 포함되고, 상기 (B) 실리콘계 광경화성 다관능 모노머는 약 20중량% 내지 약 70중량%로 포함되고, 상기 (C)비-실리콘계 광경화성 단관능 모노머는 약 5중량% 내지 약 50중량%로 포함되고, 상기 (D) 실리콘계 광경화성 단관능 모노머는 약 1중량% 내지 약 50중량%로 포함되고, 상기 (E) 개시제는 약 1중량% 내지 약 10중량%로 포함되는 것인, 유기발광소자 봉지용 조성물.
- 제1항에 있어서, 상기 유기발광소자 봉지용 조성물은 열안정제를 더 포함하는 것인, 유기발광소자 봉지용 조성물.
- 제9항에 있어서, 상기 열안정제는 상기 (A),(B),(C),(D) 및 (E)의 총 합에 대해 약 0.01ppm 내지 약 2000ppm으로 포함되는 것인, 유기발광소자 봉지용 조성물.
- 유기발광소자, 및 상기 유기 발광소자 위에 형성되고 무기 장벽층과 유기 장벽층을 포함하는 장벽 스택을 포함하고,상기 유기 장벽층은 제1항 내지 제10항 중 어느 한 항의 유기발광소자 봉지용 조성물로 형성된 것인, 유기발광소자 표시장치.
- 제11항에 있어서, 상기 유기 장벽층은 모듈러스가 약 6.5GPa 이하인 것인, 유기발광소자 표시장치.
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CN201680061108.9A CN108137755B (zh) | 2015-10-19 | 2016-08-25 | 用于封装有机发光元件的组合物及由其制造的有机发光元件显示装置 |
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US11608400B2 (en) | 2023-03-21 |
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CN108137755A (zh) | 2018-06-08 |
WO2017069392A3 (ko) | 2017-06-15 |
US20230203225A1 (en) | 2023-06-29 |
CN108137755B (zh) | 2020-10-20 |
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