WO2021006070A1 - 有機el表示素子用封止剤および有機el表示装置 - Google Patents
有機el表示素子用封止剤および有機el表示装置 Download PDFInfo
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- WO2021006070A1 WO2021006070A1 PCT/JP2020/025207 JP2020025207W WO2021006070A1 WO 2021006070 A1 WO2021006070 A1 WO 2021006070A1 JP 2020025207 W JP2020025207 W JP 2020025207W WO 2021006070 A1 WO2021006070 A1 WO 2021006070A1
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- 125000005529 alkyleneoxy group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000001454 anthracenes Chemical class 0.000 description 1
- 125000000732 arylene group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- DZBUGLKDJFMEHC-UHFFFAOYSA-N benzoquinolinylidene Natural products C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- FLPKSBDJMLUTEX-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) 2-butyl-2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]propanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)C(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)(CCCC)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 FLPKSBDJMLUTEX-UHFFFAOYSA-N 0.000 description 1
- RSOILICUEWXSLA-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 description 1
- AENNXXRRACDJAY-UHFFFAOYSA-N bis(2-dodecylphenyl)iodanium Chemical compound CCCCCCCCCCCCC1=CC=CC=C1[I+]C1=CC=CC=C1CCCCCCCCCCCC AENNXXRRACDJAY-UHFFFAOYSA-N 0.000 description 1
- DWBJZABVMXQFPV-UHFFFAOYSA-N bis(4-methoxyphenyl)iodanium Chemical compound C1=CC(OC)=CC=C1[I+]C1=CC=C(OC)C=C1 DWBJZABVMXQFPV-UHFFFAOYSA-N 0.000 description 1
- HKWWDSQUZURFQR-UHFFFAOYSA-N bis(4-methylphenyl)iodanium Chemical compound C1=CC(C)=CC=C1[I+]C1=CC=C(C)C=C1 HKWWDSQUZURFQR-UHFFFAOYSA-N 0.000 description 1
- DVXRGUXKOSSOHV-UHFFFAOYSA-N bis[1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl] decanedioate Chemical compound C1C(C)(C)N(OCC(C)(O)C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(OCC(C)(C)O)C(C)(C)C1 DVXRGUXKOSSOHV-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229940125904 compound 1 Drugs 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940126214 compound 3 Drugs 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- AFYCEAFSNDLKSX-UHFFFAOYSA-N coumarin 460 Chemical compound CC1=CC(=O)OC2=CC(N(CC)CC)=CC=C21 AFYCEAFSNDLKSX-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 125000002993 cycloalkylene group Chemical group 0.000 description 1
- 125000004956 cyclohexylene group Chemical group 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- OWZDULOODZHVCQ-UHFFFAOYSA-N diphenyl-(4-phenylsulfanylphenyl)sulfanium Chemical compound C=1C=C([S+](C=2C=CC=CC=2)C=2C=CC=CC=2)C=CC=1SC1=CC=CC=C1 OWZDULOODZHVCQ-UHFFFAOYSA-N 0.000 description 1
- OZLBDYMWFAHSOQ-UHFFFAOYSA-N diphenyliodanium Chemical compound C=1C=CC=CC=1[I+]C1=CC=CC=C1 OZLBDYMWFAHSOQ-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- YQGOJNYOYNNSMM-UHFFFAOYSA-N eosin Chemical compound [Na+].OC(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C(O)=C(Br)C=C21 YQGOJNYOYNNSMM-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- IINNWAYUJNWZRM-UHFFFAOYSA-L erythrosin B Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=C(I)C(=O)C(I)=C2OC2=C(I)C([O-])=C(I)C=C21 IINNWAYUJNWZRM-UHFFFAOYSA-L 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000002211 flavins Chemical class 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- MGFYSGNNHQQTJW-UHFFFAOYSA-N iodonium Chemical compound [IH2+] MGFYSGNNHQQTJW-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 1
- 150000004010 onium ions Chemical class 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 229930187593 rose bengal Natural products 0.000 description 1
- AZJPTIGZZTZIDR-UHFFFAOYSA-L rose bengal Chemical compound [K+].[K+].[O-]C(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C1=C2C=C(I)C(=O)C(I)=C2OC2=C(I)C([O-])=C(I)C=C21 AZJPTIGZZTZIDR-UHFFFAOYSA-L 0.000 description 1
- 229940081623 rose bengal Drugs 0.000 description 1
- STRXNPAVPKGJQR-UHFFFAOYSA-N rose bengal A Natural products O1C(=O)C(C(=CC=C2Cl)Cl)=C2C21C1=CC(I)=C(O)C(I)=C1OC1=C(I)C(O)=C(I)C=C21 STRXNPAVPKGJQR-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 229950003937 tolonium Drugs 0.000 description 1
- HNONEKILPDHFOL-UHFFFAOYSA-M tolonium chloride Chemical compound [Cl-].C1=C(C)C(N)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 HNONEKILPDHFOL-UHFFFAOYSA-M 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- JBYYGVMOBTYNOM-UHFFFAOYSA-N trimethoxy-[3-(4-methylpiperazin-1-yl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCN1CCN(C)CC1 JBYYGVMOBTYNOM-UHFFFAOYSA-N 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical compound C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- 239000012953 triphenylsulfonium Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
- C08G65/16—Cyclic ethers having four or more ring atoms
- C08G65/18—Oxetanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
Definitions
- the present invention relates to a sealing agent for an organic EL display element and an organic EL display device.
- Organic EL elements are being used in displays and lighting devices because they consume less power. Since the organic EL element is easily deteriorated by moisture and oxygen in the atmosphere, it is being studied to use it by sealing it with a sealing material.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2012-77122 contains a substance that generates a cation by electron beam irradiation and a cation polymerization compound, and the cation polymerization compound is selected from the group consisting of an epoxy group and an oxetane group.
- a substance having at least one substituent and generating a cation by electron beam irradiation has a molar absorption coefficient of 100 or less with respect to light having a wavelength of 350 to 400 nm, and has maximum absorption at a wavelength of less than 300 nm.
- the electron beam curable resin composition is described. According to the composition, the electron beam curable resin composition has excellent transparency and can be applied as a permanent film to an adhesive, a sealant, or the like. It is said that a product and a cured product thereof can be provided.
- Patent Document 2 Japanese Unexamined Patent Publication No. 2017-137434 provides a curable composition having excellent adhesiveness and light resistance, a method for curing the curable composition, a cured product thereof, and a display element using the same.
- a curable composition containing a cationic curable component, a cationic polymerization initiator and an ultraviolet absorber in specific amount ratios is described.
- Patent Document 3 Japanese Patent Laid-Open No. 2018-504622
- a base material layer, a coating layer and an adhesive layer are formed in a specific order, and one or more of these layers contains a UV absorber.
- a display window film containing a specific amount for each layer and having a wavelength of 390 nm or less and a transmittance of about 1% or less is described.
- the same document provides a window film for a display which has a low transmittance for light having a wavelength of 390 nm or less and can minimize damage, discoloration or shortening of life of a display element, and has a wavelength of 390 nm or less when a UV absorber is contained. It is described that a display window film capable of blocking light and having no precipitation of a UV absorber was provided, and a display window film applicable to a transparent display, particularly a transparent OLED display, was provided.
- the component (a) is at least one selected from the group consisting of an epoxy compound and an oxetane compound, according to [1].
- the content of the component (c) in the sealant for an organic EL display element is 0.001 to 1.0 parts by mass with respect to 100 parts by mass of the component (a) [1].
- the sealant for an organic EL display element according to any one of the items.
- Component (d) One or more selected from the group consisting of benzotriazole compounds, triazine compounds, monophenol compounds, bisphenol compounds, trisphenol compounds, phosphite compounds and oxaphosphaphenanthrene oxide compounds.
- the weather resistance of the sealing material of the organic EL display element can be made excellent.
- the sealing agent for an organic EL display element (Encapsulant for organic EL display element)
- the sealing agent for an organic EL display element (hereinafter, also appropriately simply referred to as “sealing agent”) is a composition used for sealing an organic EL element, and has the following component (a). , (B) and (c) are included.
- (c) Hindered amine the constituent components of the encapsulant will be described with specific examples.
- Component (a) is a cationically polymerizable compound.
- the component (a) may be a compound having a cationically polymerizable functional group.
- Examples of the cationically polymerizable functional group include an epoxy group, an oxetanyl group, and a vinyl ether group.
- the component (a) preferably contains one or more selected from the group consisting of an epoxy compound and an oxetane compound, and more preferably from the group consisting of an epoxy compound and an oxetane compound. One or more selected.
- epoxy compound is a compound having one or more epoxy groups in one molecule, and specific examples thereof include monoepoxy compounds, bifunctional epoxy compounds, and trifunctional or higher functional epoxy compounds.
- the epoxy compound preferably contains an alicyclic epoxy compound.
- the alicyclic epoxy compound may be a compound having at least one alicyclic hydrocarbon structure and one or more epoxy groups in the molecule.
- the alicyclic epoxy compound may have one epoxy group or two or more epoxy groups in the molecule, but is preferably two or more epoxy groups from the viewpoint of improving the curability of the encapsulant. Has.
- the alicyclic epoxy compound examples include a compound containing a cycloalkene oxide structure such as an epoxycyclohexane structure, and a compound in which an epoxy group is bonded to a cyclic aliphatic hydrocarbon directly or via a hydrocarbon group or the like.
- the alicyclic epoxy compound is preferably a compound having a cycloalkene oxide structure.
- the cycloalkene oxide structure is a structure obtained by epoxidizing cycloalkene with an oxidizing agent such as a peroxide, and is composed of two adjacent carbon atoms and oxygen atoms constituting an aliphatic ring. It is an epoxy group.
- the cycloalkene oxide is, for example, cyclohexene oxide, cyclopentene oxide, and preferably cyclohexene oxide.
- the number of cycloalkene oxide structures in one molecule of the (A) alicyclic epoxy compound having a cycloalkene oxide structure may be one or two or more. From the viewpoint of enhancing the transparency, heat resistance, light resistance, etc. of the cured product, the number of cycloalkene oxide structures in one molecule is preferably two or more.
- Examples of the alicyclic epoxy compound having a cycloalkene oxide structure include a compound represented by the following general formula (1).
- X is a single bond or a linking group.
- the linking group is, for example, a divalent hydrocarbon group, a carbonyl group, an ether group (ether bond), a thioether group (thioether bond), an ester group (ester bond), a carbonate group (carbonate bond) and an amide group (amide bond). And they can be selected from a plurality of linked groups.
- Examples of the divalent hydrocarbon group include an alkylene group having 1 to 18 carbon atoms and a divalent alicyclic hydrocarbon group.
- specific examples of the alkylene group having 1 to 18 carbon atoms include a methylene group, a methylmethylene group, a dimethylmethylene group, an ethylene group, a propylene group and a trimethylene group.
- Specific examples of the divalent alicyclic hydrocarbon group include 1,2-cyclopentylene group, 1,3-cyclopentylene group, cyclopentylidene group, 1,2-cyclohexylene group and 1,3.
- Examples thereof include a divalent cycloalkylene group (including a cycloalkylidene group) such as a cyclohexylene group, a 1,4-cyclohexylene group and a cyclohexylidene group.
- a divalent cycloalkylene group such as a cyclohexylene group, a 1,4-cyclohexylene group and a cyclohexylidene group.
- X is preferably a single bond or a linking group having an oxygen atom, and more preferably a single bond.
- the linking group having an oxygen atom is preferably -CO- (carbonyl group), -O-CO-O- (carbonate group), -COO- (ester group), -O- (ether group). ), -CONH- (amide group), a group in which a plurality of these groups are linked, or a group in which one or more of these groups and one or more of divalent hydrocarbon groups are linked.
- l represents an integer of 1 to 10
- m represents an integer of 1 to 30
- R represents an alkylene group having 1 to 8 carbon atoms, and is preferably an alkylene group having 1 to 3 carbon atoms such as a methylene group, an ethylene group, a propylene group, and an isopropylene group.
- n1 and n2 each independently represent an integer of 1 to 30.
- CEL celoxide
- epoxy resin preferably contains an alicyclic epoxy compound and an aliphatic epoxy compound.
- the content of the epoxy compound in the encapsulant is preferably 20% by mass or more, more preferably 30% by mass or more, and more preferably 40% by mass, based on the total composition of the encapsulant, from the viewpoint of improving the curability. It is mass% or more. Further, from the viewpoint of improving the flexibility and adhesion of the cured product, the content of the epoxy compound in the encapsulant is preferably 80% by mass or less, more preferably 70, based on the total composition of the encapsulant. It is mass%, more preferably 60% by mass or less.
- the oxetane compound is a compound having one or more oxetane groups in one molecule, and specific examples thereof include a monooxetane compound, a bifunctional oxetane compound, and a trifunctional or higher functional oxetane compound.
- the oxetane compound is preferably 1 or 2 selected from the group consisting of the compound represented by the following general formula (2) and the compound represented by the general formula (3). These are the above compounds.
- Y represents an oxygen atom, a sulfur atom or a single bond. From the viewpoint of improving the weather resistance of the sealing material, Y is preferably an oxygen atom.
- R 1a in the general formula (2) and R 1 b in the general formula (3) are a fluorine atom, an alkyl group having 1 to 6 carbon atoms, a fluoroalkyl group having 1 to 6 carbon atoms, an allyl group, and 6 to 6 carbon atoms, respectively.
- m in the general formula (2) and n in the general formula (3) represent integers of 1 or more and 5 or less, respectively.
- R 1a or R 1 b When a plurality of R 1a or R 1 b are contained in one molecule, they may be the same or different. Further, adjacent R 1a or adjacent R 1b may form a ring structure.
- R 2a is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, and an alkyl having 2 to 6 carbon atoms. It represents a carbonyl group, an alkoxycarbonyl group having 2 to 6 carbon atoms, an N-alkylcarbamoyl group having 2 to 6 carbon atoms, or a (meth) acryloyl group.
- R 2b represents a p-valent linking group.
- p represents 2, 3 or 4, preferably 2.
- R 2b is a linear or branched alkylene group having 1 to 12 carbon atoms, a linear or branched poly (alkyleneoxy) group, an arylene group, a siloxane bond, or these. Represents a combination.
- the oxetane compound is preferably the oxetane compound represented by the general formula (3), and more preferably 3-ethyl-3 ⁇ [(3-ethyloxetane-). 3-Il) methoxy] methyl ⁇ oxetane (for example, OXT-221, manufactured by Toagosei Co., Ltd.).
- the oxetane compound is also preferably a compound represented by the following general formula (4).
- Y is an oxygen atom or a sulfur atom. From the viewpoint of improving the weather resistance of the sealing material, Y is preferably an oxygen atom.
- R 1c represents a hydrogen atom, a fluorine atom, an alkyl group having 1 to 6 carbon atoms, a fluoroalkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 18 carbon atoms, a frill group or a thienyl group.
- R 1c is preferably an alkyl group having 1 to 6 carbon atoms from the viewpoint of reducing the dielectric constant of the cured product of the encapsulant.
- R 2c has a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, an alkylcarbonyl group having 2 to 6 carbon atoms, and 2 to 6 carbon atoms. It is an alkoxycarbonyl group, an N-alkylcarbamoyl group having 2 to 6 carbon atoms, or a (meth) acryloyl group.
- R 2c is preferably an alkyl group having 1 to 10 carbon atoms from the viewpoint of reducing the dielectric constant of the cured product of the encapsulant.
- Specific examples of the compound represented by the general formula (4) include 3-ethyl-3-hydroxymethyloxetane, 3- (meth) allyloxymethyl-3-ethyloxetane, and (3-ethyl-3-oxetanylmethoxy) methyl.
- the content of the oxetane compound in the encapsulant is preferably 20% by mass or more, more preferably 30% by mass, based on the total composition of the encapsulant, from the viewpoint of reducing the dielectric constant of the cured product of the encapsulant. % Or more, more preferably 40% by mass or more. Further, from the viewpoint of making the viscosity of the encapsulant preferable, the content of the oxetane compound in the encapsulant is preferably 80% by mass or less, more preferably 70% by mass, based on the total composition of the encapsulant. %, More preferably 60% by mass or less.
- the component (a) preferably contains an epoxy compound and an oxetane compound, and more preferably contains an alicyclic epoxy compound, an aliphatic epoxy compound and an oxetane compound.
- the content of the component (a) in the encapsulant is preferably 70% by mass or more, more preferably 80% by mass or more, based on the total composition of the encapsulant, from the viewpoint of improving the strength of the cured product. It is even more preferably 85% by mass or more, and even more preferably 90% by mass or more. Further, from the viewpoint of improving the weather resistance of the sealing material, the content of the component (a) in the sealing agent is preferably 99.9% by mass or less with respect to the total composition of the sealing agent, which is more preferable. Is 99.5% by mass or less, more preferably 99% by mass or less.
- Component (b) is a polymerization initiator.
- the polymerization initiator include one or more selected from the group consisting of a thermal radical initiator and a photopolymerization initiator.
- the component (b) is a polymerization initiator (UV radical initiator, UV cation initiator) that generates radicals or ions when irradiated with light such as ultraviolet rays. It contains, more preferably a photocationic polymerization initiator.
- the photocationic polymerization initiator may be any compound capable of generating a cation by irradiation with light and initiating the polymerization of the component (a).
- Specific examples of the photocationic polymerization initiator include an onium ion salt (onium salt) represented by the following general formula (5). Such onium salts release Lewis acid by photoreaction. [R 12 a R 13 b R 14 c R 15 d W] n + [MX n + m ] m- (5)
- W represents S, Se, Te, P, As, Sb, Bi, O, I, Br, Cl, or N ⁇ N.
- R 12 , R 13 , R 14 and R 15 each independently represent an organic group, and a, b, c and d each independently represent an integer of 0 to 3.
- "a + b + c + d" is equal to the valence of W.
- M represents a metal or metalloid constituting the central atom of the halogenated complex [MX n + m ].
- M include B, P, As, Sb, Fe, Sn, Bi, Al, Ca, In, Ti, Zn, Sc, V, Cr, Mn, and Co.
- X represents a halogen atom such as F, Cl, Br, etc.
- m represents the net charge of the halogenated complex ion
- n represents the valence of M.
- onium ion in the general formula (5) examples include diphenyliodonium, bis (4-methoxyphenyl) iodonium, 4-methylphenyl-4'-isopropylphenyliodonium, bis (4-methylphenyl) iodonium, and bis (4-methylphenyl).
- tert-butylphenyl) iodonium bis (dodecylphenyl) iodonium, trilucmiliodonium, triphenylsulfonium, diphenyl-4-thiophenoxyphenylsulfonium, bis [4- (diphenylsulfonio) -phenyl] sulfide, bis [4 -(Di (4- (2-hydroxyethyl) phenyl) sulfonio) -phenyl] sulfide, ⁇ 5-2,4- (cyclopentagenyl) [1,2,3,4,5,6- ⁇ -(methyl) Ethyl) benzene] -iron (1+).
- the anion in the general formula (5) include tetrafluoroborate, tetrakis (pentafluorophenyl) borate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, and hexachloroantimonate.
- the anion in the general formula (5) is preferably selected from the group consisting of tetrafluoroborate, tetrakis (pentafluorophenyl) borate and hexafluorophosphate.
- Examples of commercially available photocation initiators represented by the general formula (5) are Irgacure250, Irgacure270, Irgacure290 (manufactured by BASF), CPI-100P, CPI-101A, CPI-200K, CPI-210S, CPI-310B. , CPI-400PG (manufactured by Sun Appro), SP-150, SP-170, SP-171, SP-506, SP-066, SP-130, SP-140, SP-601, SP-606, SP-701 ( Examples thereof include ADEKA) and PI-2074 (trade name, Rhodia).
- the photocation initiator represented by the general formula (5) is preferably Irgacure270, Irgacure290, CPI-100P, CPI-101A, CPI-200K, CPI-210S, CPI-310B. , CPI-400PG, SP-150, SP-170, SP-171, SP-056, SP-066, SP-601, SP-606, SP-701 and PI-2074. There are two or more types.
- the content of the component (b) in the encapsulant is preferably 0.1% by mass or more, more preferably 0.2% by mass, based on the total composition of the encapsulant, from the viewpoint of improving the curability. Above, more preferably 0.3% by mass or more. Further, from the viewpoint of suppressing the coloring of the encapsulant, the content of the component (b) in the encapsulant is preferably 10% by mass or less, more preferably 5% by mass, based on the total composition of the encapsulant. % Or less, more preferably 2% by mass or less.
- Component (c) Ingredient (c) is hindered amine.
- the component (c) may be a compound having a hindered amine skeleton.
- Specific examples of the component (c) include bis (2,2,6,6-tetramethylpiperidine-4-yl) sebacate, 2,4-dichloro-6-tert-octylamino-s-triazine and 4,4-.
- Polycondensation product of hexamethylenebis (amino-2,2,6,6-tetramethylpihelidine), bis [1- (2-hydroxy-2-methylpropoxy) -2,2,6,6-tetra Methylpiperidin-4-yl] sebacate can be mentioned.
- ADEKA STAB LA-52 ADEKA STAB LA-57
- ADEKA STAB LA-63P ADEKA STAB LA-68
- ADEKA STAB ADEKA STAB
- Tinuvin123 bis (1-octyloxy-2,2,6,6-) Tetramethyl-4-piperidyl) sebacic acid
- Tinuvin249 Tinuvin111FDL
- Tinuvin144 Tinuvin171, Tinuvin292
- Tinuvin765 bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacic acid and methyl 1,2,2 , 6,6-Pentamethyl-4-piperidyl sebacic acid
- Tinuvin5100 Tinuvin770DF (manufactured by BASF) and the like.
- the pKb of the component (c) is preferably 7 or more, more preferably 8 or more, still more preferably 9 or more, from the viewpoint of ensuring the curability of the sealing material. Further, from the viewpoint of improving weather resistance, the pKb of the component (c) is preferably 15 or less, preferably 14 or less.
- pKb of the component (c) is obtained by a neutralization titration method.
- the content of the component (c) in the encapsulant is preferably 0.001% by mass or more, more preferably 0, based on the total composition of the encapsulant, from the viewpoint of improving the weather resistance of the encapsulant. It is 0.01% by mass or more, more preferably 0.1% by mass or more. Further, from the viewpoint of improving the curability of the sealing material, the content of the component (c) in the sealing agent is preferably 3% by mass or less, more preferably 2% by mass, based on the total composition of the sealing agent. % Or less, more preferably 1% by mass or less.
- the content of the component (c) in the sealing agent is 100 parts by mass of the component (a). On the other hand, it is preferably 0.001 part by mass or more, more preferably 0.01 part by mass or more, still more preferably 0.1 part by mass or more, still more preferably 0.3% by mass or more. Further, from the viewpoint of improving the curability of the sealing material, the content of the component (c) in the sealing agent is preferably 1.0 part by mass or less with respect to 100 parts by mass of the component (a). It is preferably 0.8 parts by mass or less, more preferably 0.6 parts by mass or less.
- the sealing agent is preferably liquid from the viewpoint of improving the weather resistance of the sealing material and from the viewpoint of being suitable for forming a cured material by a coating method such as an inkjet method.
- the viscosity of the encapsulant measured at 25 ° C. and 20 rpm using an E-type viscometer is preferably 1 mPa ⁇ s or more, more preferably 5 mPa / s, from the viewpoint of improving the effect of suppressing dripping during inkjet ejection. -S or more, more preferably 8 mPa ⁇ s or more.
- the viscosity of the sealant is preferably 100 mPa ⁇ s or less, more preferably 50 mPa ⁇ s or less, and further preferably 30 mPa ⁇ s or less.
- the sealing agent is preferably solvent-free from the viewpoint of improving the weather resistance of the sealing material and being suitable for forming a cured material by a coating method such as an inkjet method.
- the content of the solvent is more than 0% by mass, preferably 0.05% by mass or less, and more preferably 0.03% by mass or less.
- the sealant does not contain a solvent, there is a case where the solvent is not intentionally blended at the time of preparing the sealant.
- the sealing agent is preferably used for coating, and more preferably used for coating by the inkjet method.
- the dielectric constant of the cured product of the sealant is preferably 4.0 or less, more preferably 3.7 or less, still more preferably 3.5 or less, from the viewpoint of improving the sealing characteristics of the encapsulant. .. Further, the lower limit of the dielectric constant of the cured product of the sealant is not limited, and may be, for example, 1 or more.
- the dielectric constant of the cured product, cured product obtained by a sealing agent is cured by UV-LED illuminance 1000 mW / cm 2, the integrated quantity of light 1500 mJ / cm 2 at a wavelength of 395 nm, measured at a frequency of 100kHz Permittivity to be
- the sealing agent contains the components (a) to (c) in combination, a sealing material having excellent weather resistance can be obtained by using such a sealing agent.
- the encapsulant may contain components other than the components (a) to (c).
- components other than the components (a) to (c) will be given.
- the component (d) is one or more compounds selected from the group consisting of benzotriazole compounds, triazine compounds, monophenol compounds, bisphenol compounds, trisphenol compounds, phosphite compounds and oxaphosphaphenanthrene oxide compounds. is there.
- the weather resistance of the sealing material can be further improved.
- benzotriazole compound examples include 2- (2-hydroxy-5-methylphenyl) benzotriazole.
- benzotriazole compounds include 2- (2-hydroxy-5-methylphenyl) benzotriazole.
- commercially available products of benzotriazole compounds TinuvinP, Tinuvin234, Tinuvin234FF, Tinuvin326, Tinuvin326FL, Tinuvin329, Tinuvin329FL, Tinuvin360, Chimassorb81, Chimassorb81FL (manufactured by BASF), KEMISORB71, KEMISORB73, KEMISORB74, KEMISORB79, KEMISORB279 (Chemipro Kasei , JF-77, JF-79, JF-80, JF-83, JF-832 (manufactured by Johoku Chemical Industry Co., Ltd.).
- triazine compound examples include 2,4-bis (2-hydroxy-4-butyloxyphenyl) -6- (2,4-bis-butyloxyphenyl) -1,3,5-triazine and 2-hydroxyphenyl.
- -S-Triazine can be mentioned.
- commercially available triazine compounds include Tinuvin 460, Tinuvin 1577ED, Tinuvin 1600 (manufactured by BASF), and KEMIPROB102 (manufactured by CHEMIPRO KASEI).
- the monophenol compound examples include benzenepropanoic acid, 3,5-bis (1,1-dimethylethyl) -4-hydroxy-C7-C9 side chain alkyl ester, and 2,6-di-t-butyl-p-. Cresol can be mentioned.
- Specific examples of commercially available monophenol compounds include Irganox 1135 (manufactured by BASF), KEMISORB112, KEMISORB113, KEMISORB114, and KEMINOX76 (manufactured by CHEMIPRO KASEI).
- the bisphenol compound examples include 2,2-methylenebis (4-methyl-6-t-butylphenol). Further, as a specific example of a commercially available bisphenol compound, KEMINOX9425 (manufactured by Chemipro Kasei Co., Ltd.) can be mentioned.
- trisphenol compound examples include 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane.
- the component (d) preferably contains one or more selected from the group consisting of benzotriazole compounds, triazine compounds and monophenol compounds, and more. Preferably, one or two of these are included.
- the content of the component (d) in the encapsulant is preferably 0.001% by mass or more, more preferably 0, based on the total composition of the encapsulant, from the viewpoint of improving the weather resistance of the encapsulant. It is 0.01% by mass or more, more preferably 0.1% by mass or more. Further, from the viewpoint of improving the curability of the sealing material, the content of the component (d) in the sealing agent is preferably 10% by mass or less, more preferably 5% by mass, based on the total composition of the sealing agent. % Or less, more preferably 2% by mass or less.
- examples of other components in the encapsulant include coupling agents such as a photosensitizer, a leveling agent, and a silane coupling agent.
- the curability of the sealant can be further improved.
- the sensitizer include a photocation sensitizer.
- the photosensitizer is a compound that is preferably excited by light having a wavelength of 350 nm to 450 nm from the viewpoint of corresponding to a wavelength-selective light source such as UV-LED.
- sensitizers include polynuclear aromatics such as pyrene, perylene, triphenylene, and anthracene; xanthones such as fluoressein, eosin, erythrosin, rhodamine B, and rosebengal; xanthones, thioxanthones, dimethylthioxanthones, Xanthones such as diethylthioxanthone; cyanines such as thiacarbocyanine and oxacarbocyanine; merocyanines such as merocyanine and carbomerocyanine; rodocyanines; oxonors; thiadins such as thionin, methylene blue and tolui
- the photosensitizer is preferably polycyclic aromatics, acridones, coumarins or base styryls, and more preferably an anthracene compound, from the viewpoint of improving the curability of the sealing material.
- the content of the photosensitizer in the sealant is preferably 0.1% by mass or more with respect to 100 parts by mass of the component (a) from the viewpoint of making the curability of the sealant more preferable. More preferably 0.2% by mass or more, further preferably 0.3% by mass or more, preferably 3% by mass or less, more preferably 1.5% by mass or less, still more preferably 1% by mass or less. Is.
- the sealing agent contains a leveling agent
- the flatness of the sealing material formed by the sealing agent, for example, the sealing film can be improved.
- a leveling agent contained in a general sealing material can be used.
- Specific examples of the leveling agent include a fluorine-based polymer, a silicone-based polymer, and an acrylate-based polymer.
- the content of the leveling agent in the encapsulant is preferably 0.1 to 1 part by mass with respect to 100 parts by mass of the component (a) from the viewpoint of preventing the surface tension from being excessively lowered.
- the adhesion between the sealing material and the material to be sealed can be further improved.
- the coupling agent include a silane coupling agent.
- the silane coupling is preferably a silane coupling agent having a functional group common to the polymerizable functional group in the component (a), or a component, from the viewpoint of improving the adhesion between the sealing material and the material to be sealed.
- the coupling agent comprises a group consisting of a silane coupling agent having an epoxy group and a silane coupling agent having a functional group that reacts (for example, an addition reaction) with the epoxy group. It is preferable to include one or more selected types.
- silane coupling agent having an epoxy group examples include ⁇ -glycidoxypropyltrimethoxysilane and ⁇ - (3,4-epoxidecyclohexyl) ethyltrimethoxysilane.
- a silane coupling agent having a functional group capable of reacting with an epoxy group include an amino group such as a primary amino group or a secondary amino group; a carboxyl group or the like; a methacryloyl group; a silane coupling agent containing an isocyanate group or the like. Can be mentioned.
- silane coupling agents include N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyltrimethoxysilane, and N-2-.
- (Aminoethyl) -3-aminopropylmethyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine examples thereof include N-phenyl-3-aminopropyltrimethoxysilane or 3- (4-methylpiperazino) propyltrimethoxysilane, trimethoxysilylbenzoic acid, ⁇ -methacryloxypropyltrimethoxysilane, and ⁇ -isocyanatopropyltriethoxysilane. ..
- the coupling agent may contain other than the above-mentioned ones, for example, other silane coupling agents.
- silane coupling agents include vinyltriacetoxysilane and vinyltrimethoxysilane.
- the molecular weight of the coupling agent is preferably 80 to 800 from the viewpoint of improving the adhesion between the sealing material and the material to be sealed.
- the content of the coupling agent in the sealing agent is preferably 0.5% by mass or more with respect to 100 parts by mass of the component (a) from the viewpoint of improving the adhesion between the sealing material and the material to be sealed. Yes, more preferably 1% by mass or more, further preferably 1.5% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, and 3% by mass or less. It is also preferable to have.
- the method for producing a sealant includes, for example, mixing components (a) to (c) and other components.
- mixing components (a) to (c) includes, for example, mixing components (a) to (c) and other components.
- each component is mixed by a method of dispersing each component with a ball mill, a method of charging into a flask and stirring, or a method of kneading with a three-roll, and a sealant. May be prepared.
- a sealing material may be formed using the obtained sealing agent.
- a sealant may be applied onto the substrate and dried.
- a known method such as an inkjet method, screen printing, or dispenser coating can be used. Further, the drying can be performed, for example, by heating to a temperature at which the component (a) does not polymerize.
- the shape of the obtained sealing material is not limited, and may be, for example, a film.
- the encapsulant obtained in this embodiment is suitably used for encapsulating a display element, preferably an organic EL display element, for example.
- a display element preferably an organic EL display element
- a display device having excellent weather resistance can be obtained.
- a configuration example of the display device will be given by taking an organic EL display device as an example.
- FIG. 1 is a cross-sectional view showing a configuration example of the organic EL display device according to the present embodiment.
- the display device 100 shown in FIG. 1 is an organic EL display device, which comprises a substrate (base material layer 50), an organic EL element (light emitting element 10) arranged on the base material layer 50, and a light emitting element 10.
- a sealing layer 22 (which may be an overcoat layer 22 or a barrier layer 22) to be coated is included. Then, for example, the sealing layer 22 is composed of a cured product of the sealing agent in the present embodiment. Further, in FIG.
- the display device 100 has a barrier layer 21 (may be a touch panel layer 21 or a surface protection layer 21) and a sealing layer 22 (which may be a touch panel layer 21 or a surface protection layer 21) as layers located on the observation side of the light emitting element 10. It has an overcoat layer 22 or a barrier layer 22), a flattening layer 23 (may be a sealing layer 23), and a barrier layer 24.
- the flattening layer 23 is provided on the base material layer 50 so as to cover the light emitting element 10, and the barrier layer 24 is provided on the surface of the flattening layer 23.
- the sealing layer 22 is provided on the base material layer 50 so as to cover the flattening layer 23 and the barrier layer 24. Further, a barrier layer 21 is provided on the sealing layer 22.
- each layer is not limited, and an appropriate configuration can be adopted based on generally known information. Further, such a display device 100 can be manufactured based on generally known information.
- Polymerizable compound 1 Alicyclic epoxy compound, CEL8010, Daicel's polymerizable compound 2: Aliphatic epoxy compound, SR-NPG, Sakamoto Yakuhin Kogyo's polymerizable compound 3: Oxetane compound, OXT-221, Toa Synthetic Co., Ltd.
- Additive 1 2- (2-Hydroxy-5-methylphenyl) benzotriazole, KEMISORB71, Chemipro Kasei Co., Ltd.
- Additive 2 2,4-bis (2-hydroxy-4-butyloxyphenyl) -6- (2) , 4-Bis-Butyloxyphenyl) -1,3,5-Triazine, Tinuvin 460, BASF
- Additive 3 Benzene Proanoic Acid, 3,5-Bis (1,1-Dimethylethyl) -4-Hydroxy- C7-C9 side chain alkyl ester, Irganox 1135, manufactured by BASF (other components)
- Photosensitizer 1 9,10-dibutoxyanthracene, UVS-1331, Leveling agent manufactured by Kawasaki Kasei Chemicals Co., Ltd .1: Polyether-modified polydimethylsiloxane, BYK-378, Coupling agent manufactured by Big Che
- Examples 1 to 4 Each component was blended so as to have the blending composition shown in Table 1 to obtain a sealing agent which is a liquid and solvent-free composition.
- a sealing agent which is a liquid and solvent-free composition.
- components other than the polymerization initiator were placed in a flask and mixed.
- the amount of the polymerization initiator shown in Table 1 was added and further mixed. Then, the mixture was stirred until the powder was no longer visible to obtain a sealant.
- the physical characteristics of the sealant or its cured product obtained in each example were measured by the following methods. The measurement results are also shown in Table 1.
- a coating film for obtaining a cured product for measuring the dielectric constant was prepared by the following method. That is, the obtained sealant was introduced into an inkjet cartridge DMC-11610 (manufactured by FUJIFILM Dimatix). The inkjet cartridge was set in an inkjet device DMP-2831 (manufactured by Fujifilm Dimatix), and after adjusting the ejection state, the thickness after curing was increased on a substrate on which aluminum was deposited to a thickness of 100 nm on non-alkali glass. It was applied in a size of 5 cm ⁇ 5 cm so as to have a size of 10 ⁇ m.
- the obtained coating film was left at room temperature (25 ° C.) for 1 minute, and then cured with a UV-LED having a wavelength of 395 nm at an illuminance of 1000 mW / cm 2 and an integrated light intensity of 1500 mJ / cm 2 .
- a UV-LED having a wavelength of 395 nm at an illuminance of 1000 mW / cm 2 and an integrated light intensity of 1500 mJ / cm 2 .
- aluminum was vapor-deposited on the surface coated with the inkjet to a thickness of 100 nm, and the dielectric constant was measured with an LCR meter HP4284A (manufactured by Agilent Technologies) under the condition of 100 kHz by an automatic equilibrium bridge method.
- Viscosity of curable resin composition The viscosity of the curable composition obtained in each example was measured at 25 ° C. and 20 rpm using an E-type viscometer (LV DV-II + Pro, manufactured by BROOKFIELD).
- a laminate to be used as the evaluation sample was formed by the following procedure according to the method for preparing the dielectric constant measurement sample. That is, the encapsulant obtained in each example was introduced into an inkjet cartridge DMC-11610 (manufactured by FUJIFILM Dimatix). The inkjet cartridge was set in an inkjet device DMP-2831 (manufactured by Fujifilm Dimatix), and after adjusting the ejection state, the thickness after curing was increased on a substrate on which aluminum was deposited to a thickness of 100 nm on non-alkali glass.
- the obtained coating film was left at room temperature (25 ° C.) for 1 minute, and then cured with a UV-LED having a wavelength of 395 nm at an illuminance of 1000 mW / cm 2 and an integrated light intensity of 1500 mJ / cm 2 . Then, aluminum was vapor-deposited on the surface coated with the inkjet to a thickness of 100 nm to obtain a sample for evaluation.
- the film thickness before and after irradiation with simulated sunlight was measured with a scanning white interference microscope VertScan (manufactured by Hitachi High-Tech Science Co., Ltd.). Then, the reduction rate (%) of the film thickness after the simulated sunlight irradiation was calculated with respect to the film thickness before the simulated sunlight irradiation.
- the encapsulants obtained in each example had a favorable appearance and had a small rate of change in film thickness before and after simulated sunlight irradiation. Therefore, by using the sealing agent in each example for sealing the organic EL display element, an organic EL display device having excellent weather resistance can be obtained.
- Example 5 In Example 2, even when the addition amount of the component (c) was 0.1% by mass, a good sealing material having a film thickness change rate of 5% was obtained.
- Example 6 In Example 2, even when the addition amount of the component (c) was 1.0% by mass, a good sealing material having a film thickness change rate of 3% was obtained.
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Abstract
Description
特許文献1(特開2012-77122号公報)には、電子線照射によりカチオンを発生する物質と、カチオン重合化合物を含有し、カチオン重合化合物は、エポキシ基及びオキセタン基からなる群から選択される少なくとも1種の置換基を1個以上有し、電子線照射によりカチオンを発生する物質は、波長350~400nmの光に対するモル吸光係数が100以下であり、且つ、波長300nm未満に極大吸収を有する、電子線硬化性樹脂組成物について記載されており、かかる組成物によれば、透明性に優れ、永久膜として粘接着剤や封止剤等への適用が可能な電子線硬化性樹脂組成物及びその硬化物を提供することができるとされている。
[1] 以下の成分(a)、(b)および(c)を含む、有機EL表示素子用封止剤。
(a)カチオン重合性化合物
(b)重合開始剤
(c)ヒンダードアミン
[2] 前記成分(a)が、エポキシ化合物およびオキセタン化合物からなる群から選択される1種以上である、[1]に記載の有機EL表示素子用封止剤。
[3] 前記成分(c)が、pKb7以上のヒンダードアミンである、[1]または[2]に記載の有機EL表示素子用封止剤。
[4] 前記成分(a)100質量部に対して、当該有機EL表示素子用封止剤中の前記成分(c)の含有量が0.001~1.0質量部である、[1]乃至[3]いずれか1項に記載の有機EL表示素子用封止剤。
[5] 成分(d):ベンゾトリアゾール化合物、トリアジン化合物、モノフェノール化合物、ビスフェノール化合物、トリスフェノール化合物、ホスファイト化合物およびオキサホスファフェナントレンオキサイド化合物からなる群から選択される1種または2種以上の化合物をさらに含む、[1]乃至[4]いずれか1項に記載の有機EL表示素子用封止剤。
[6] 当該有機EL表示素子用封止剤が液状であり、かつ、溶剤を含有しない、または前記溶剤の含有量が0.05質量%以下である、[1]乃至[5]いずれか1項に記載の有機EL表示素子用封止剤。
[7] インクジェット法による塗布に用いられる有機EL表示素子用封止剤である、[1]乃至[6]いずれか1項に記載の有機EL表示素子用封止剤。
[8] 基板と、
前記基板上に配置された有機EL素子と、
前記有機EL素子を被覆する封止層と、
を含み、
前記封止層が、[1]乃至[7]いずれか1項に記載の有機EL表示素子用封止剤の硬化物により構成されている、有機EL表示装置。
本実施形態において、有機EL表示素子用封止剤(以下、適宜単に「封止剤」とも呼ぶ。)は、有機EL素子の封止に用いられる組成物であって、以下の成分(a)、(b)および(c)を含む。
(a)カチオン重合性化合物
(b)重合開始剤
(c)ヒンダードアミン
はじめに、封止剤の構成成分について具体例を挙げて説明する。
成分(a)は、カチオン重合性化合物である。成分(a)は、カチオン重合性の官能基を有する化合物であればよい。カチオン重合性の官能基として、たとえば、エポキシ基、オキセタニル基、ビニルエーテル基が挙げられる。
エポキシ化合物は、一分子中に1または2以上のエポキシ基を有する化合物であり、具体的には、モノエポキシ化合物、2官能エポキシ化合物、3官能以上のエポキシ化合物が挙げられる。
脂環式エポキシ化合物は、分子中に脂環式炭化水素構造およびエポキシ基をそれぞれ1つ以上有する化合物であればよい。脂環式エポキシ化合物は、分子内に1つのエポキシ基を有しても2以上のエポキシ基を有してもよいが、封止剤の硬化性を高める観点から、好ましくは2以上のエポキシ基を有する。
ここで、シクロアルケンオキサイド構造とは、シクロアルケンを過酸化物などの酸化剤でエポキシ化して得られる構造であり、脂肪族環を構成する隣接する2つの炭素原子と酸素原子とで構成されるエポキシ基である。シクロアルケンオキサイドは、たとえばシクロヘキセンオキサイド、シクロペンテンオキサイドであり、好ましくはシクロヘキセンオキサイドである。
このうち、炭素数が1~18のアルキレン基の具体例として、メチレン基、メチルメチレン基、ジメチルメチレン基、エチレン基、プロピレン基、トリメチレン基が挙げられる。
また、2価の脂環式炭化水素基の具体例として、1,2-シクロペンチレン基、1,3-シクロペンチレン基、シクロペンチリデン基、1,2-シクロヘキシレン基、1,3-シクロヘキシレン基、1,4-シクロヘキシレン基、シクロヘキシリデン基等の2価のシクロアルキレン基(シクロアルキリデン基を含む)が挙げられる。
同様の観点から、酸素原子を有する連結基は、好ましくは、-CO-(カルボニル基)、-O-CO-O-(カーボネート基)、-COO-(エステル基)、-O-(エーテル基)、-CONH-(アミド基)、これらの基が複数連結した基、またはこれらの基の1以上と2価の炭化水素基の1以上とが連結した基である。
封止材料の耐候性を向上する観点から、エポキシ樹脂は、好ましくは脂環式エポキシ化合物および脂肪族エポキシ化合物を含む。
また、硬化物の柔軟性や密着性を向上する観点から、封止剤中のエポキシ化合物の含有量は、封止剤の全組成に対して好ましくは80質量%以下であり、より好ましくは70質量%、さらに好ましくは60質量%以下である。
オキセタン化合物は、一分子中に1または2以上のオキセタニル基を有する化合物であり、具体的には、モノオキセタン化合物、2官能オキセタン化合物、3官能以上のオキセタン化合物が挙げられる。
また、一般式(2)におけるmおよび一般式(3)におけるnは、それぞれ1以上5以下の整数を表す。R1aまたはR1bが一分子中に複数含まれる場合、これらは同一であってもよく、異なっていてもよい。また、隣り合うR1aどうし、もしくは隣り合うR1bどうしが環構造を形成していてもよい。
また、封止材料の耐候性を向上する観点から、封止剤中の成分(a)の含有量は、封止剤の全組成に対し、好ましくは99.9質量%以下であり、より好ましくは99.5質量%以下、さらに好ましくは99質量%以下である。
成分(b)は、重合開始剤である。重合開始剤の具体例として、熱ラジカル開始剤および光重合開始剤からなる群から選択される1種以上が挙げられる。低温で安定的に硬化物を形成する観点から、成分(b)は、紫外線等の光が照射されることでラジカルまたはイオンを生成する重合開始剤(UVラジカル開始剤、UVカチオン開始剤)を含み、より好ましくは光カチオン重合開始剤である。
光カチオン重合開始剤の具体例として、下記一般式(5)で表されるオニウムイオンの塩(オニウム塩)が挙げられる。かかるオニウム塩は、光反応によってルイス酸を放出する。
[R12 aR13 bR14 cR15 dW]n+[MXn+m]m- (5)
また、一般式(5)中、Mは、ハロゲン化錯体[MXn+m]の中心原子を構成する金属、またはメタロイドを示す。Mの具体例として、B、P、As、Sb、Fe、Sn、Bi、Al、Ca、In、Ti、Zn、Sc、V、Cr、Mn、Coが挙げられる。一般式(5)中、XはF、Cl、Br等のハロゲン原子を示し、mはハロゲン化錯体イオンの正味の電荷を示し、nはMの原子価を示す。
生体に対する安全性に優れるという点では、一般式(5)における陰イオンは、テトラフルオロボレート、テトラキス(ペンタフルオロフェニル)ボレートおよびヘキサフルオロホスフェートからなる群から選択されるものが好ましい。
また、封止剤の着色を抑制する観点から、封止剤中の成分(b)の含有量は、封止剤の全組成に対し、好ましくは10質量%以下であり、より好ましくは5質量%以下、さらに好ましくは2質量%以下である。
成分(c)は、ヒンダードアミンである。
成分(c)は、ヒンダードアミン骨格を有する化合物であればよい。成分(c)の具体例として、ビス(2,2,6,6-テトラメチルピペリジン-4-イル)セバケート、2,4-ジクロロ-6-tert-オクチルアミノ-s-トリアジンと4,4-ヘキサメチレンビス(アミノ-2,2,6,6-テトラメチルピヘリジン)の重縮合生成物、ビス[1-(2-ヒドロキシ-2-メチルプロポキシ)-2,2,6,6-テトラメチルピペリジン-4-イル]セバケートが挙げられる。
また、耐候性を向上する観点から、成分(c)のpKbは、好ましくは15以下であり、好ましくは14以下である。
ここで、成分(c)のpKbは中和滴定法により得られる。
また、封止材料の硬化性向上の観点から、封止剤中の成分(c)の含有量は、封止剤の全組成に対し、好ましくは3質量%以下であり、より好ましくは2質量%以下、さらに好ましくは1質量%以下である。
また、封止材料の硬化性向上の観点から、封止剤中の成分(c)の含有量は、成分(a)100質量部に対して、好ましくは1.0質量部以下であり、より好ましくは0.8質量部以下、さらに好ましくは0.6質量部以下である。
E型粘度計を用いて25℃、20rpmにて測定される封止剤の粘度は、インクジェット吐出時の液だれの抑制効果向上の観点から、好ましくは1mPa・s以上であり、より好ましくは5mPa・s以上、さらに好ましくは8mPa・s以上である。
また、より安定的なインクジェット吐出が可能になる観点から、封止剤の上記粘度は、好ましくは100mPa・s以下であり、より好ましくは50mPa・s以下、さらに好ましくは30mPa・s以下である。
また、封止剤の硬化物の誘電率の下限値に制限はなく、たとえば1以上であってよい。
ここで、硬化物の誘電率は、波長395nmのUV-LEDで照度1000mW/cm2、積算光量1500mJ/cm2の条件で封止剤を硬化させて得られる硬化物について、周波数100kHzにて測定される誘電率である。
成分(d)は、ベンゾトリアゾール化合物、トリアジン化合物、モノフェノール化合物、ビスフェノール化合物、トリスフェノール化合物、ホスファイト化合物およびオキサホスファフェナントレンオキサイド化合物からなる群から選択される1種または2種以上の化合物である。封止剤が成分(d)をさらに含むことにより、封止材料の耐候性をよりいっそう優れたものとすることができる。
また、封止材料の硬化性向上の観点から、封止剤中の成分(d)の含有量は、封止剤の全組成に対し、好ましくは10質量%以下であり、より好ましくは5質量%以下、さらに好ましくは2質量%以下である。
レベリング剤は、一般的なシール材に含まれるレベリング剤を用いることができる。レベリング剤の具体例として、フッ素系ポリマー、シリコーン系ポリマー、アクリレート系ポリマーが挙げられる。
封止剤中のレベリング剤の含有量は、表面張力が低下しすぎないようにする観点から、成分(a)100質量部に対して好ましくは0.1~1質量部である。
カップリング剤として、たとえばシランカップリング剤が挙げられる。シランカップリングは、封止材料と被封止材料との密着性を向上する観点から、好ましくは成分(a)中の重合性官能基と共通の官能基を有するシランカップリング剤、または、成分(a)中の重合性官能基と反応可能な官能基を有するシランカップリング剤である。たとえば、成分(a)がエポキシ化合物を含むとき、カップリング剤が、エポキシ基を有するシランカップリング剤およびエポキシ基と反応(たとえば、付加反応)する官能基を有するシランカップリング剤からなる群から選択される1種または2種以上を含むことが好ましい。
エポキシ基と反応可能な官能基を有するシランカップリング剤の具体例として、1級アミノ基や2級アミノ基等のアミノ基;カルボキシル基等;メタクリロイル基;イソシアネート基等を含むシランカップリング剤が挙げられる。
これらのシランカップリング剤の具体例として、N-2-(アミノエチル)-3-アミノプロピルメチルジメトキシシラン、N-2-(アミノエチル)-3-アミノプロピルメチルトリメトキシシラン、N-2-(アミノエチル)-3-アミノプロピルメチルトリエトキシシラン、3-アミノプロピルトリメトキシシラン、3-アミノプロピルトリエトキシシラン、3-トリエトキシシリル-N-(1,3-ジメチル-ブチリデン)プロピルアミン、N-フェニル-3-アミノプロピルトリメトキシシラン又は3-(4-メチルピペラジノ)プロピルトリメトキシシラン、トリメトキシシリル安息香酸、γ-メタクリロキシプロピルトリメトキシシラン、γ-イソシアナトプロピルトリエトキシシランが挙げられる。
本実施形態において、封止剤の製造方法は、たとえば、成分(a)~(c)ならびにその他の成分を混合することを含む。各成分を混合する方法に制限はなく、たとえば、各成分をボールミルで分散する方法、フラスコに装入して攪拌する方法、三本ロールで混練する方法により、各成分を混合して封止剤を調製してもよい。
本実施形態に得られる封止剤の硬化物をたとえば表示素子、好ましくは有機EL表示素子の封止材料として用いることにより、耐候性に優れる表示装置を得ることができる。
以下、有機EL表示装置を例に、表示装置の構成例を挙げる。
本実施形態において、有機EL表示装置は、封止剤の硬化物に構成された層を有する。
図1は、本実施形態における有機EL表示装置の構成例を示す断面図である。図1に示した表示装置100は、有機EL表示装置であって、基板(基材層50)と、基材層50上に配置された有機EL素子(発光素子10)と、発光素子10を被覆する封止層22(オーバーコート層22またはバリア性層22であってもよい)と、を含む。そして、たとえば封止層22が、本実施形態における封止剤の硬化物により構成されている。
また、図1においては、表示装置100が、発光素子10よりも観察側に位置する層として、バリア性層21(タッチパネル層21または表面保護層21であってもよい)、封止層22(オーバーコート層22またはバリア性層22であってもよい)、平坦化層23(封止層23であってもよい)、バリア性層24を有している。平坦化層23は、発光素子10を覆うように基材層50上に設けられており、バリア性層24は、平坦化層23の表面に設けられている。封止層22は、平坦化層23およびバリア性層24を覆うように基材層50上に設けられている。また、封止層22上にバリア性層21が設けられている。
((a)重合性化合物)
重合性化合物1:脂環式エポキシ化合物、CEL8010、ダイセル社製
重合性化合物2:脂肪族エポキシ化合物、SR-NPG、阪本薬品工業社製
重合性化合物3:オキセタン化合物、OXT-221、東亞合成社製
((b)重合開始剤)
重合開始剤1:光カチオン開始剤、CPI-210S、サンアプロ社製
((c)ヒンダードアミン(HALS))
HALS1:ビス(1-オクチロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバシン酸、Tinuvin 123、BASF社製、pKb=10
添加剤1:2-(2-ヒドロキシ-5-メチルフェニル)ベンゾトリアゾール、KEMISORB71、ケミプロ化成社製
添加剤2:2,4-ビス(2-ヒドロキシ-4-ブチルオキシフェニル)-6-(2,4-ビス-ブチルオキシフェニル)-1,3,5-トリアジン、Tinuvin 460、BASF社製
添加剤3:ベンゼンプロパン酸,3,5-ビス(1,1-ジメチルエチル)-4-ヒドロキシ-C7-C9側鎖アルキルエステル、Irganox 1135、BASF社製
(その他成分)
光増感剤1:9,10-ジブトキシアントラセン、UVS-1331、川崎化成工業社製
レベリング剤1:ポリエーテル変性ポリジメチルシロキサン、BYK-378、ビックケミー・ジャパン社製
カップリング剤1:3-グリシドキシプロピルトリメトキシシラン、KBM-403、信越化学工業社製
表1に示した配合組成となるように各成分を配合し、液状で溶剤を含まない組成物である封止剤を得た。具体的には、表1に記載の成分のうち、重合開始剤以外の成分をフラスコに入れて混合した。得られた混合物に、表1に示される量の重合開始剤を加えてさらに混合した。その後、粉状物が見えなくなるまで攪拌し、封止剤を得た。
各例で得られた封止剤またはその硬化物の物性を以下の方法で測定した。測定結果を表1にあわせて示す。
誘電率測定のための硬化物を得るための塗膜を以下の方法により作製した。すなわち、得られた封止剤を、インクジェットカートリッジDMC-11610(富士フイルムDimatix社製)に導入した。そのインクジェットカートリッジをインクジェット装置DMP-2831(富士フイルムDimatix社製)にセットし、吐出状態の調整を行った後、無アルカリガラス上にアルミニウムを100nmの厚みで蒸着した基板に、硬化後の厚みが10μmとなるように、5cm×5cmのサイズで塗布した。
得られた塗膜を1分間、室温(25℃)で放置した後、波長395nmのUV-LEDで照度1000mW/cm2、積算光量1500mJ/cm2で硬化させた。
その後、インクジェット塗布面にアルミニウムを100nmの厚みで蒸着し、LCRメーターHP4284A(アジレント・テクノロジー社製)にて、自動平衡ブリッジ法により条件100kHzにて誘電率を測定した。
各例で得られた硬化性組成物の粘度を、E型粘度計(LV DV-II+ Pro、BROOKFIELD社製)を用いて25℃、20rpmにて測定した。
(外観)
各例で得られた封止膜の外観を目視にて観察し、以下の基準で評価した。
○:黄変なし
△:やや黄変がみられるが、実用上問題ない程度である
×:黄変がみられる
(評価用試料の製造)
膜厚変化率の評価用試料については、誘電率測定試料の作製方法に準じ、以下の手順で評価用試料として用いる積層体を形成した。すなわち、各例で得られた封止剤を、インクジェットカートリッジDMC-11610(富士フイルムDimatix社製)に導入した。そのインクジェットカートリッジをインクジェット装置DMP-2831(富士フイルムDimatix社製)にセットし、吐出状態の調整を行った後、無アルカリガラス上にアルミニウムを100nmの厚みで蒸着した基板に、硬化後の厚みが10μmとなるように、5cm×5cmのサイズで塗布した。
得られた塗膜を1分間、室温(25℃)で放置した後、波長395nmのUV-LEDで照度1000mW/cm2、積算光量1500mJ/cm2で硬化させた。
その後、インクジェット塗布面にアルミニウムを100nmの厚みで蒸着して評価用試料を得た。
各例で得られた積層体について、キセノンランプウェザーメーター(アトラスウェザオメータCi4000、アトラス社製)を用いて、以下の条件で封止膜の上面に模擬太陽光を照射した。
強度:2.4W/m2、420nm
温度:55℃(ブラックパネル温度)
湿度:30%
時間:100hr
実施例2において、成分(c)の添加量を0.1質量%とした場合にも、膜厚変化率が5%の良好な封止材料が得られた。
実施例2において、成分(c)の添加量を1.0質量%とした場合にも、膜厚変化率が3%の良好な封止材料が得られた。
21 バリア性層、タッチパネル層または表面保護層
22 封止層、オーバーコート層、またはバリア性層
23 平坦化層または封止層
24 バリア性層
50 基材層
100 表示装置
Claims (8)
- 以下の成分(a)、(b)および(c)を含む、有機EL表示素子用封止剤。
(a)カチオン重合性化合物
(b)重合開始剤
(c)ヒンダードアミン - 前記成分(a)が、エポキシ化合物およびオキセタン化合物からなる群から選択される1種以上である、請求項1に記載の有機EL表示素子用封止剤。
- 前記成分(c)が、pKb7以上のヒンダードアミンである、請求項1または2に記載の有機EL表示素子用封止剤。
- 前記成分(a)100質量部に対して、当該有機EL表示素子用封止剤中の前記成分(c)の含有量が0.001~1.0質量部である、請求項1乃至3いずれか1項に記載の有機EL表示素子用封止剤。
- 成分(d):ベンゾトリアゾール化合物、トリアジン化合物、モノフェノール化合物、ビスフェノール化合物、トリスフェノール化合物、ホスファイト化合物およびオキサホスファフェナントレンオキサイド化合物からなる群から選択される1種または2種以上の化合物をさらに含む、請求項1乃至4いずれか1項に記載の有機EL表示素子用封止剤。
- 当該有機EL表示素子用封止剤が液状であり、かつ、溶剤を含有しない、または前記溶剤の含有量が0.05質量%以下である、請求項1乃至5いずれか1項に記載の有機EL表示素子用封止剤。
- インクジェット法による塗布に用いられる有機EL表示素子用封止剤である、請求項1乃至6いずれか1項に記載の有機EL表示素子用封止剤。
- 基板と、
前記基板上に配置された有機EL素子と、
前記有機EL素子を被覆する封止層と、
を含み、
前記封止層が、請求項1乃至7いずれか1項に記載の有機EL表示素子用封止剤の硬化物により構成されている、有機EL表示装置。
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KR1020227000001A KR20220016941A (ko) | 2019-07-05 | 2020-06-26 | 유기 el 표시 소자용 봉지제 및 유기 el 표시 장치 |
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WO2022230748A1 (ja) * | 2021-04-28 | 2022-11-03 | 三井化学株式会社 | 硬化性組成物および有機el表示装置 |
WO2023153387A1 (ja) * | 2022-02-08 | 2023-08-17 | 三井化学株式会社 | 重合性組成物、封止材、画像表示装置および画像表示装置の製造方法 |
WO2023163113A1 (ja) * | 2022-02-28 | 2023-08-31 | 三井化学株式会社 | 有機el用表示素子用封止材、有機el表示装置および有機el表示装置の製造方法 |
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