TWI470067B - 液晶密封劑及使用該密封劑的液晶顯示單元 - Google Patents
液晶密封劑及使用該密封劑的液晶顯示單元 Download PDFInfo
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- TWI470067B TWI470067B TW99109829A TW99109829A TWI470067B TW I470067 B TWI470067 B TW I470067B TW 99109829 A TW99109829 A TW 99109829A TW 99109829 A TW99109829 A TW 99109829A TW I470067 B TWI470067 B TW I470067B
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- Prior art keywords
- liquid crystal
- sealing agent
- crystal sealing
- epoxy resin
- resin
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 133
- 239000000565 sealant Substances 0.000 title description 18
- 238000007789 sealing Methods 0.000 claims description 81
- 239000003795 chemical substances by application Substances 0.000 claims description 79
- 239000003822 epoxy resin Substances 0.000 claims description 43
- 229920000647 polyepoxide Polymers 0.000 claims description 43
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 18
- 239000007822 coupling agent Substances 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 9
- 239000011256 inorganic filler Substances 0.000 claims description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 7
- MHZGKXUYDGKKIU-UHFFFAOYSA-N Decylamine Chemical compound CCCCCCCCCCN MHZGKXUYDGKKIU-UHFFFAOYSA-N 0.000 claims description 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 5
- 239000003505 polymerization initiator Substances 0.000 claims description 5
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims 1
- 238000001029 thermal curing Methods 0.000 claims 1
- -1 polyoxyethylene Polymers 0.000 description 22
- DIOQZVSQGTUSAI-UHFFFAOYSA-N n-butylhexane Natural products CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 21
- 239000000758 substrate Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 18
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 12
- 229910000420 cerium oxide Inorganic materials 0.000 description 9
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- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 9
- 230000035515 penetration Effects 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000011109 contamination Methods 0.000 description 8
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 7
- 210000002858 crystal cell Anatomy 0.000 description 7
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- 239000004842 bisphenol F epoxy resin Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
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- GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
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- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 3
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- MFAWEYJGIGIYFH-UHFFFAOYSA-N 2-[4-(trimethoxymethyl)dodecoxymethyl]oxirane Chemical compound C(C1CO1)OCCCC(C(OC)(OC)OC)CCCCCCCC MFAWEYJGIGIYFH-UHFFFAOYSA-N 0.000 description 2
- LARNQUAWIRVQPK-UHFFFAOYSA-N 2-methyloxiran-2-amine Chemical compound NC1(CO1)C LARNQUAWIRVQPK-UHFFFAOYSA-N 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 2
- ALWXDDNCZORLFM-UHFFFAOYSA-N 3-(2,5-dioxabicyclo[2.1.0]pentan-3-yloxy)phenol Chemical compound C1(C2C(O2)O1)OC1=CC(O)=CC=C1 ALWXDDNCZORLFM-UHFFFAOYSA-N 0.000 description 2
- SXPGQGNWEWPWQZ-UHFFFAOYSA-N 4-(triethoxymethyl)dodecan-1-amine Chemical compound NCCCC(C(OCC)(OCC)OCC)CCCCCCCC SXPGQGNWEWPWQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
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- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- POJWUDADGALRAB-UHFFFAOYSA-N allantoin Chemical group NC(=O)NC1NC(=O)NC1=O POJWUDADGALRAB-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
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- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 2
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- SMLNDVNTPWRZJH-UHFFFAOYSA-N 1-chloro-4-(trimethoxymethyl)dodecane Chemical compound ClCCCC(C(OC)(OC)OC)CCCCCCCC SMLNDVNTPWRZJH-UHFFFAOYSA-N 0.000 description 1
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- UPTHZKIDNHJFKQ-UHFFFAOYSA-N 2-methylprop-2-enoic acid;propane-1,2,3-triol Chemical compound CC(=C)C(O)=O.CC(=C)C(O)=O.OCC(O)CO UPTHZKIDNHJFKQ-UHFFFAOYSA-N 0.000 description 1
- LSTZTHCEEPHCNQ-UHFFFAOYSA-N 3-(2,5-dioxabicyclo[2.1.0]pentan-3-yloxy)-2,5-dioxabicyclo[2.1.0]pentane Chemical class C1(C2C(O2)O1)OC1C2C(O2)O1 LSTZTHCEEPHCNQ-UHFFFAOYSA-N 0.000 description 1
- DFYGYTNMHPUJBY-UHFFFAOYSA-N 4-(trimethoxymethyl)dodecane-1-thiol Chemical compound SCCCC(C(OC)(OC)OC)CCCCCCCC DFYGYTNMHPUJBY-UHFFFAOYSA-N 0.000 description 1
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- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- ZCZFEIZSYJAXKS-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] prop-2-enoate Chemical compound OCC(CO)(CO)COC(=O)C=C ZCZFEIZSYJAXKS-UHFFFAOYSA-N 0.000 description 1
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
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- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
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- LJYTWOBAOVEHBG-UHFFFAOYSA-N azane;cyclohexane-1,4-dicarboxylic acid Chemical compound N.N.OC(=O)C1CCC(C(O)=O)CC1 LJYTWOBAOVEHBG-UHFFFAOYSA-N 0.000 description 1
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- 210000004027 cell Anatomy 0.000 description 1
- WXANAQMHYPHTGY-UHFFFAOYSA-N cerium;ethyne Chemical compound [Ce].[C-]#[C] WXANAQMHYPHTGY-UHFFFAOYSA-N 0.000 description 1
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- MNUSMUGFHGAOIW-UHFFFAOYSA-N cyclohexane-1,1,2-tricarboxylic acid Chemical compound OC(=O)C1CCCCC1(C(O)=O)C(O)=O MNUSMUGFHGAOIW-UHFFFAOYSA-N 0.000 description 1
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- OKUGAOMPLZNWRT-UHFFFAOYSA-N diazanium;pentanedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCC([O-])=O OKUGAOMPLZNWRT-UHFFFAOYSA-N 0.000 description 1
- FRRMMWJCHSFNSG-UHFFFAOYSA-N diazanium;propanedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)CC([O-])=O FRRMMWJCHSFNSG-UHFFFAOYSA-N 0.000 description 1
- FIMTUWGINXDGCK-UHFFFAOYSA-H dibismuth;oxalate Chemical compound [Bi+3].[Bi+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O FIMTUWGINXDGCK-UHFFFAOYSA-H 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- WHRIKZCFRVTHJH-UHFFFAOYSA-N ethylhydrazine Chemical compound CCNN WHRIKZCFRVTHJH-UHFFFAOYSA-N 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- 229940091173 hydantoin Drugs 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- RBQRWNWVPQDTJJ-UHFFFAOYSA-N methacryloyloxyethyl isocyanate Chemical compound CC(=C)C(=O)OCCN=C=O RBQRWNWVPQDTJJ-UHFFFAOYSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- VMGAPWLDMVPYIA-HIDZBRGKSA-N n'-amino-n-iminomethanimidamide Chemical compound N\N=C\N=N VMGAPWLDMVPYIA-HIDZBRGKSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004843 novolac epoxy resin Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- LBQOWJAGULGPAF-UHFFFAOYSA-N pyridine-2,6-dicarboxylic acid dihydrate Chemical compound O.O.OC(=O)C1=CC=CC(C(O)=O)=N1 LBQOWJAGULGPAF-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- BOLDJAUMGUJJKM-LSDHHAIUSA-N renifolin D Natural products CC(=C)[C@@H]1Cc2c(O)c(O)ccc2[C@H]1CC(=O)c3ccc(O)cc3O BOLDJAUMGUJJKM-LSDHHAIUSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 150000003304 ruthenium compounds Chemical class 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 150000003535 tetraterpenes Chemical class 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 235000013337 tricalcium citrate Nutrition 0.000 description 1
- HVYVMSPIJIWUNA-UHFFFAOYSA-N triphenylstibine Chemical compound C1=CC=CC=C1[Sb](C=1C=CC=CC=1)C1=CC=CC=C1 HVYVMSPIJIWUNA-UHFFFAOYSA-N 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/4835—Heat curing adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/485—Multi-component adhesives, i.e. chemically curing as a result of the mixing of said multi-components
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Sealing Material Composition (AREA)
- Epoxy Resins (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Description
本發明係有關一種液晶密封劑,其係分配式(dispense)塗佈性優良且可對應於網版印刷且黏度為100Pa‧s以下之液晶密封劑,且為不經過乾燥步驟或預烤步驟,而液晶不會滲入密封部中的液晶密封劑;並且,本發明係有關使用該密封劑的液晶顯示單元。
近年來液晶顯示單元也朝應用於電視等大型顯示畫面進展,而在多用途上之需求越來越高。因此,關於液晶面板之製造,為了更加提高量產性,而正逐漸使基板大型化且縮短產距時間(tack time,每一步驟之時間)。
在製作液晶顯示裝置時,以往一直藉由下述方式來製作:藉由分配式塗佈或網版印刷等方法將液晶密封劑塗佈於玻璃基板後,予以密封而形成單元,並在真空環境中從設置於其一部分之液晶注入口將液晶注入單元內後,使用密封劑或封口劑將該液晶注入口予以密封(真空注入法)。
此外,將液晶滴入由樹脂製作成之堰中後進行貼合再使樹脂硬化的液晶滴入工法也正在實用化。在液晶滴入工法中,首先,於2片附有電極之透明基板中之一者上,藉由分配而形成長方形之由未硬化密封劑所構成之密封圖案。接著,在密封劑未硬化之狀態下將液晶之微小液滴滴入塗佈於透明基板之密封圖案之框內全面後,立刻將另一透明基板貼合,而製作液晶單元,並對密封圖案部照射紫外線而進行預硬化。然後,依需要而加熱,進行主要硬化,而製作液晶顯示單元。只要在減壓下進行將基板貼合而製作液晶單元之步驟,則可以極高效率製造液晶顯示元件,現今此滴入工法已逐漸成為液晶顯示元件之製造方法之主流。
當藉由液晶滴入工法來製造液晶顯示元件時,有下述問題:所製得之液晶顯示單元之密封圖案發生變形,而產生液晶滲入密封圖案中之現象(滲入現象),因而擾亂該密封圖案附近之液晶之定向。解決此問題之方法有例如使用黏度較通常所使用者更高之密封劑來形成密封圖案,但有因分配性惡化,而導致在進行分配時之乾涸、斷線等不良影響之可能性。此外,近年來為了更進一步縮短產距時間等之目的而希望可提高分配速度或更容易地藉由網版印刷形成密封圖案,因此而要求更低黏度且無滲入現象之密封劑。
關於此問題,在專利文獻1中,有在進行製作液晶單元之步驟前,藉由預先增加未硬化之密封圖案之黏度而防止滲入現象之報告。然而,尚無關於初期黏度為100Pa‧s以下之低黏度且不經過預烤步驟即直接用於液晶滴入步驟的液晶密封劑之前例。
此外,在專利文獻2及3中,有經改善液晶污染性之包含橡膠狀聚合物微粒子之液晶密封劑之報告。但在此等2份公報之情形,皆並非為初期黏度為100Pa‧s以下者,並且橡膠狀聚合物微粒子係用於抑制在光硬化時不容易被UV照射到之遮光部分之密封劑成分在進行熱硬化時溶出至液晶中。
[專利文獻1]日本特開2008-275670號公報
[專利文獻2]日本特開2007-219039號公報
[專利文獻3]日本特開2007-262253號公報
本發明之課題為抑制在進行液晶滴入工法時液晶滲入密封劑中之滲入現象,而提供一種經抑制滲入現象之液晶密封劑及使用該密封劑的液晶顯示單元。
本發明人等進行致力硏究後,結果發現一種包含聚矽氧(silicone)橡膠粉末之硬化性樹脂組成物,該硬化性樹脂組成物係即使初期黏度為100Pa‧s以下,也可抑制進行液晶滴入工法時之滲入現象。此外,也發現,經由在該硬化性樹脂組成物中添加胺基矽烷耦合劑,即可得到更進一步防止滲入現象之效果,再經由依需要而添加球狀填料,而可提高進行分配式塗佈時之密封之直線性,遂完成本發明。換言之,本發明係有關下述(1)至(10)者。
(1) 一種液晶密封劑,係包含(a)聚矽氧橡膠粉末,且使用E型黏度計測得之25℃時之黏度為100Pa‧s以下者。
(2)如前述(1)之液晶密封劑,其中,復包含(b)胺基矽烷耦合劑。
(3)如前述(1)之液晶密封劑,其中,復包含(c)球狀填料。
(4)如前述(1)至(3)中任一項之液晶密封劑,其中,復包含(d)光硬化樹脂。
(5)如前述(4)之液晶密封劑,其中,(d)光硬化樹脂係環氧丙烯酸酯。
(6)如前述(1)至(5)中任一項之液晶密封劑,其中,復包含(e)光自由基聚合起始劑。
(7)如前述(1)至(6)中任一項之液晶密封劑,其中,復包含(f)熱硬化樹脂及/或(g)熱硬化劑。
(8)如前述(7)之液晶密封劑,其中,(f)熱硬化樹脂係環氧樹脂,成分(g)熱硬化劑係有機醯肼(hydrazide)。
(9)如前述(1)至(8)中任一項之液晶密封劑,其中,復包含(h)平均粒徑為3μm以下之無機填料。
(10)一種液晶顯示單元,係經使前述(1)至(9)中任一項之液晶密封劑硬化而得之硬化物進行密封者。
換言之,本發明之液晶密封劑係低黏度,並且不經過預烤步驟,而具有防止在進行液晶滴入工法時液晶滲入密封劑中之優良的效果。因此,經由使用此密封劑,即容易製造出可使分配式塗佈、網版印刷塗佈所耗費之時間縮短之液晶顯示面板。
以下,詳細說明本發明。
本發明之液晶密封劑中所使用之聚矽氧橡膠粉末,只要為由以矽氧烷鍵之重複做為主鏈之聚合物所構成者,則無特別限定。聚矽氧粉末一般依彈性率而區分為樹脂粉末與橡膠粉末,從可抑制液晶滲入密封劑中之觀點來看,特別是以具有衝擊吸收性之橡膠粉末為佳。以未經交聯聚合物等被覆表面之聚矽氧橡膠粉末較佳。並且,在本發明中,聚矽氧橡膠係以使用具有使聚矽氧烷交聯而成之構造者為佳,聚矽氧烷以直鏈狀之二甲基聚矽氧烷為佳。此外,因密封劑之製造及使用時進行加熱處理,因此以具有耐熱性為佳。
本發明之液晶密封劑中所使用之聚矽氧橡膠粉末(a)之平均粒徑,由於若過大,則在製造間隙狹窄之液晶單元時,會成為當貼合上下玻璃基板時無法順利形成間隙等之不良要因,故通常為3μm以下,且以2μm以下為佳。此外,同樣地,最大粒徑通常為8μm以下,且以5μm以下為佳。並且,為了良好地形成間隙,以在-50℃至250℃顯示橡膠彈性為佳。此外,以在液晶污染性方面也良好為佳。以信越化學工業公司製KMP-594特佳。相對於本發明之液晶密封劑100質量%,其使用量通常為1至20質量%,且以5至15質量%左右為佳。若添加更多,則搖變性增大,而使塗佈性降低。
本發明之液晶密封劑中所使用之聚矽氧橡膠粉末(a)係以與胺基矽烷耦合劑(b)併用為佳。經由併用此等,由於耐衝擊性提高,故可防止液晶滲入密封劑中。
本發明之液晶密封劑中可使用之胺基矽烷耦合劑(b)一般可使用習知物,無特別限定。例如:胺基丙基三甲氧基矽烷、胺基丙基三乙氧基矽烷、二甲基胺基丙基三甲氧基矽烷、二乙基胺基丙基三甲氧基矽烷、二丙基胺基丙基三甲氧基矽烷、二丁基胺基丙基三甲氧基矽烷、單丁基胺基丙基三甲氧基矽烷、二辛基胺基丙基三甲氧基矽烷、二丁基胺基丙基二甲氧基矽烷、二丁基胺基丙基單甲氧基矽烷、二甲基胺基苯基三甲氧基矽烷、三甲氧基矽烷基-γ-丙基苯基胺、三甲氧基矽烷基-γ-丙基苄基胺、三甲氧基矽烷基-γ-丙基哌啶、三甲氧基矽烷基-γ-丙基嗎啉、三甲氧基矽烷基-γ-丙基咪唑等。此等可使用1種或併用2種以上。若令本發明之液晶密封劑整體為100質量%,則胺基矽烷耦合劑在液晶密封劑中所佔之含量為0至3質量%左右。
本發明中之液晶密封劑之初期黏度為100Pa‧s以下。若初期黏度為100Pa‧s以下,則分配式塗佈性優良且可對應於網板印刷,而與面板之生產性大幅相關,且造成有效的影響。
本發明之液晶密封劑中可使用之球狀填料(c)可舉例如:氧化矽(silica)、矽膠(silica gel)、中空玻璃、碳黑、高分子聚乙烯等。若為球狀,則由於無論從任何方向施加攪動壓力皆可整體承受,故可非常安定地揉合。此外,此填料通常平均粒徑為0.001μm至100μm左右,且以0.01μm至10μm為佳。經由添加此尺寸之球狀填料,即可降低樹脂之搖變性。藉由此等,可進行安定之分配式塗佈,而提高密封之直線性。前述中,由於在樹脂中容易分散,故以表面經疏水化處理之矽膠更佳。可從市場取得信越化學工業製之次微米(submicron)球狀氧化矽粉末x-24-9163A等。若令本發明之液晶密封劑整體為100質量%,則其使用量通常為0至10質量%,且以1至5質量%左右為佳。若添加更多,則聚矽氧橡膠粉末與胺基矽烷耦合劑所產生之效果低,而滲入性不良。
本發明之液晶密封劑中可使用之光硬化性樹脂(d),只要為溶出至液晶中之溶出性低,則並無特別限定,可舉例如:如胺酯(urethane)丙烯酸酯、(甲基)丙烯酸酯、環氧(甲基)丙烯酸酯等具有丙烯醯基做為官能基之化合物。具體而言例如:甲基丙烯酸芐酯、甲基丙烯酸環己酯、甘油二甲基丙烯酸酯、甘油三甲基丙烯酸酯、EO改質甘油三丙烯酸酯、季戊四醇丙烯酸酯、三羥甲基丙烷三丙烯酸酯、參(丙烯醯氧基乙基)異氰脲酸酯、二季戊四醇六丙烯酸酯、氟甘胺醇(glycinol)三丙烯酸酯等。此外,從液晶污染性之觀點來看,以環氧(甲基)丙烯酸酯樹脂特佳。此環氧(甲基)丙烯酸酯樹脂可藉由使丙烯酸或甲基丙烯酸與分子中具有至少2個以上環氧基之環氧樹脂進行酯化反應而得到。此合成反應一般可藉由已知之方法進行。例如:在環氧樹脂中添加預定當量比之丙烯酸或甲基丙烯酸、以及觸媒(例如苄基二甲基胺、三乙基胺、氯化苄基三甲基銨、三苯基膦、三苯基銻化氫(triphenyl stibine)等)、與聚合抑制劑(例如對甲氧基苯酚、氫醌、甲基氫醌、啡噻(phenothiazine)、二丁基羥基甲苯等),在例如80至110℃進行酯化反應。此外,分子中具有至少2個以上環氧基之環氧樹脂可舉例如:雙酚A型環氧樹脂、烷基取代雙酚A型環氧樹脂、環氧烷加成雙酚A型環氧樹脂、雙酚F型環氧樹脂、烷基取代雙酚F型環氧樹脂、環氧烷加成雙酚F型環氧樹脂、雙酚S型環氧樹脂、烷基取代雙酚S型環氧樹脂、環氧烷加成雙酚S型環氧樹脂、酚酚醛(phenol novolac)型環氧樹脂、甲酚酚醛型環氧樹脂、聯苯型環氧樹脂、萘型環氧樹脂、環氧丙基胺型環氧樹脂、二環戊二烯型環氧樹脂、聚矽氧改質環氧樹脂、胺酯改質環氧樹脂、橡膠改質環氧樹脂等,以雙酚A型環氧樹脂、烷基取代雙酚A型環氧樹脂、環氧烷加成雙酚A型環氧樹脂、雙酚F型環氧樹脂、烷基取代雙酚F型環氧樹脂、環氧烷加成雙酚F型環氧樹脂、雙酚S型環氧樹脂、烷基取代雙酚S型環氧樹脂、環氧烷加成雙酚S型環氧樹脂為佳。在本發明之液晶密封劑中,若令本發明之液晶密封劑整體為100質量%,則光硬化性樹脂(d)在液晶密封劑中所佔之含量為0至80質量%左右。
此外,本發明之液晶密封劑中可使用之光自由基聚合起始劑(e),只要為自由基型聚合起始劑,則並無特別限定,可舉例如:苄基二甲基縮酮、1-羥基環己基苯基酮、二乙基噻噸酮(diethylthioxanthone)、二苯甲酮、2-乙基蒽醌、2-羥基-2-甲基苯丙酮、2-甲基-[4-(甲硫基)苯基]-2-嗎啉基-1-丙烷、2,4,6-三甲基芐醯基二苯基膦氧化物等。此外,也可使用2-羥基-1-[4-(2-羥基乙氧基)苯基]-2-甲基丙-1-酮、或甲基丙烯酸2-異氰酸基乙基酯與2-羥基-1-[4-(2-羥基乙氧基)苯基]-2-甲基丙-1-酮之反應生成物。
在本發明之液晶密封劑中,光自由基聚合起始劑成分(e)相對於光硬化性樹脂(d)之調配比係,相對於(d)成分100質量份,通常為0.01至20質量份,且以5至15質量份為佳。若自由基產生型光自由基聚合起始劑之量少於0.01質量份,則光硬化反應不充分,若大於20質量份,則起始劑之量過多,而起始劑對液晶造成污染或硬化樹脂特性降低而成為問題。
在本發明之液晶密封劑中,也可包含熱硬化樹脂(f)及/或熱硬化劑(g)。經由使用熱硬化性樹脂(f)及/或熱硬化劑(g),而使液晶污染性良好。此外,接著強度、及耐濕熱測試之可靠性提高。
本發明之液晶密封劑中可使用之熱硬化樹脂(f)並無特別限定,以2官能以上之環氧樹脂為佳,例如:雙酚A型環氧樹脂、雙酚F型環氧樹脂、雙酚S型環氧樹脂、酚酚醛型環氧樹脂、甲酚酚醛型環氧樹脂、雙酚A酚醛型環氧樹脂、雙酚F酚醛型環氧樹脂、脂環式環氧樹脂、脂肪族鏈狀環氧樹脂、環氧丙酯型環氧樹脂、環氧丙基胺型環氧樹脂、尿囊素(hydantoin)型環氧樹脂、異氰脲酸酯型環氧樹脂、具有三酚甲烷骨架之酚酚醛型環氧樹脂,其他尚有二官能酚類之二環氧丙基醚化物、二官能醇類之二環氧丙基醚化物、及該等之鹵化物、氫化物等。此等之中,從液晶污染性之觀點來看,以雙酚型環氧樹脂、酚醛型環氧樹脂為佳。
此外,可用於本發明之液晶密封劑中之熱硬化樹脂之水解性氯量係以600ppm以下為佳。若水解性氯量大於600ppm,則液晶密封劑對液晶之污染性有成為問題之可能性。水解性氯量可藉由下述方式來定量,例如:使約0.5g之環氧樹脂溶於20mL之二烷(dioxane)中,以1N之KOH/乙醇溶液5mL回流30分鐘後,以0.01N硝酸銀溶液滴定。如此之環氧樹脂在液晶密封劑中所佔之含量為5至50質量%左右。
本發明之液晶密封劑中可使用之(g)成分並無特別限定,宜使用固形之有機醯肼。可舉例如:屬於芳香族醯肼之水楊醯肼、苯甲醯肼、萘-1,4-二甲酸二醯肼、對酞酸二醯肼、間酞酸二醯肼、2,6-萘甲酸二醯肼、2,6-吡啶二甲酸二醯肼、1,2,4-苯三甲酸三醯肼、1,4,5,8-萘四甲酸四醯肼、均苯四甲酸四醯肼等。此外,脂肪族醯肼化合物可舉例如:甲醯肼、乙醯肼、丙醯肼、草酸二醯肼、丙二酸二醯肼、丁二酸二醯肼、戊二酸二醯肼、己二酸二醯肼、庚二酸二醯肼、1,4-環己烷二甲酸二醯肼、酒石酸二醯肼、蘋果酸二醯肼、亞胺基二乙酸二醯肼、N,N’-六亞甲基雙(半卡肼)、檸檬酸三醯肼、氮基三(乙醯肼)、環己烷三甲酸三
醯肼、1,3-雙(卡肼基乙基)-5-異丙基尿囊素(1,3-bis(hydrazinocarbonoethyl)-5-isopropylhydantoin)等具有尿囊素骨架之二醯肼類等,從硬化反應性與潛在性之平衡之觀點來看,較佳可舉例如2官能之二醯肼,特佳可舉例如間酞酸二醯肼。
若此等醯肼化合物之平均粒徑過大,則在製造間隙狹窄之液晶單元時,會成為當貼合上下玻璃基板時無法順利形成間隙等之不良要因,故通常為3μm以下,且以2μm以下為佳。此外,同樣地,最大粒徑通常為8μm以下,且以5μm以下為佳。此粒徑係藉由雷射繞射/散射式粒度分布測定器(乾式)(股份有限公司SEISHIN企業製,LMS-30)進行測定。
在本發明之液晶密封劑中,熱硬化劑(g)之含有率係相對於成分(f)之環氧樹脂之環氧基之環氧當量,以0.20至0.80為佳、以0.4至0.6特佳。
此外,本發明之液晶密封劑中可使用之無機填料(h)可舉例如:熔融氧化矽、結晶氧化矽、碳化矽、氮化矽、氮化硼、碳酸鈣、碳酸鎂、硫酸鋇、硫酸鈣、雲母、滑石、黏土、氧化鋁、氧化鎂、氧化鋯、氫氧化鋁、氫氧化鎂、矽酸鈣、矽酸鋁、矽酸鋰鋁、矽酸鋯、鈦酸鋇、玻璃纖維、碳纖維、二硫化鉬、石棉等,以熔融氧化矽、結晶氧化矽、氮化矽、氮化硼、碳酸鈣、硫酸鋇、硫酸鈣、雲母、滑石、黏土、氧化鋁、氫氧化鋁、矽酸鈣、矽酸鋁為佳,以熔融氧化矽、結晶氧化矽、氧化鋁、滑石更佳。此等無機填料
可混合2種以上使用。若其平均粒徑過大,則在製造間隙狹窄之液晶單元時,會成為當貼合上下玻璃基板時無法順利形成間隙等之不良要因,故通常為3μm以下,且以2μm以下為佳。粒徑係藉由雷射繞射/散射式粒度分布測定器(乾式)(股份有限公司SEISHIN企業製,LMS-30)進行測定。
本發明中可使用之無機填料在液晶密封劑中之含量通常為5至40質量%,且以15至30質量%為佳。當無機填料之含量低於5質量%時,由於對於玻璃基板之接著強度降低,且耐濕可靠性也不良,故有時吸濕後之接著強度也大幅降低。此外,當無機填料之含量大於40質量%時,由於填料之含量過多,故難以壓扁而無法形成液晶單元之間隙。
為了提高接著強度,本發明之液晶密封劑可含有胺基矽烷耦合劑以外之矽烷耦合劑。矽烷耦合劑可舉例如:3-環氧丙氧基丙基三甲氧基矽烷、3-環氧丙氧基丙基甲基二乙氧基矽烷、3-環氧丙氧基丙基甲基二甲氧基矽烷、2-(3,4-環氧環己基)乙基三甲氧基矽烷、N-苯基-γ-胺基丙基三甲氧基矽烷、N-2-(胺基乙基)-3-胺基丙基甲基二甲氧基矽烷、N-2-(胺基乙基)-3-胺基丙基三甲氧基矽烷、3-胺基丙基三乙氧基矽烷、3-巰基丙基三甲氧基矽烷、乙烯基三甲氧基矽烷、N-(2-(乙烯基苄基胺基)乙基)-3-胺基丙基三甲氧基矽烷鹽酸鹽、3-甲基丙烯醯氧基丙基三甲氧基矽烷、3-氯丙基甲基二甲氧基矽烷、3-氯丙基三甲氧基矽烷等矽烷耦合劑。此等矽烷耦合劑可混合2種以上使用。
此等之中,為了得到更良好的接著強度及搖變性,以組合2種矽烷耦合劑使用為佳。經由使用矽烷耦合劑,即得到具有強的接著強度之液晶密封劑。若令本發明之液晶密封劑整體為100質量%,則如此之矽烷耦合劑之含量通常為0至3質量%左右。
在本發明之液晶密封劑中,可進一步依需要而調配有機填料、以及顏料、塗平(leveling)劑、消泡劑、溶劑等添加劑。
為了得到本發明之液晶密封劑,首先,在(d)成分中依需要而溶解混合(e)成分、(f)成分。接著,在此混合物中混合矽烷耦合劑,並添加預定量之(a)成分、(b)成分、(c)成分、(g)成分、(h)成分、以及依需要之有機填料、消泡劑、溶劑及塗平劑等後,藉由習知之混合裝置,例如三輥磨機、混砂機、球磨機等均勻混合,並以金屬網進行過濾,藉此即可得到本發明之液晶密封劑。
本發明之液晶顯示單元係藉由將於基板形成有預定電極之一對基板相對向配置成預定間隔,並以本發明之密封劑將周圍密封後,於其間隙中封入液晶而成者。所封入之液晶之種類無特別限定。在此,基板係由包括玻璃、石英、塑膠、矽等且在至少一者具有透光性之組合之基板所構成。就其製法而言,例如當為液晶滴入方式時,在本發明之液晶密封劑中添加玻璃纖維等間隔件(spacer)(間隙控制材料)後,於該一對基板中之一者使用分配器或網版印刷裝置等塗佈該液晶密封劑。接著,於該液晶密封劑之堰之
內側滴入液晶,並在真空中將另一玻璃基板疊合,而進行間隙形成。形成間隙後,藉由紫外線照射機而對液晶密封部照射紫外線並進行光硬化。紫外線照射量較佳為500mJ/cm2
至6000mJ/cm2
、更佳為1000mJ/cm2
至4000mJ/cm2
之照射量。然後,依需要而在90至130℃進行硬化1至2小時,藉此即可得到本發明之液晶顯示單元。如此進行而得之本發明之液晶顯示單元係無因液晶污染所造成之顯示不良,且接著性、耐濕可靠性優良者。間隔件可舉例如:玻璃纖維、氧化矽珠、聚合物珠等。其直徑係依目的而異,通常為2至8μm,且以4至7μm為佳。相對於本發明之液晶密封劑100質量份,其使用量通常為0.1至4質量份,且以0.5至2質量份為佳、以0.9至1.5質量份左右更佳。
以下藉由實施例更詳細說明本發明。在實施例中,「份」係意指質量份,「%」係意指質量%。
以下述表中所示之比例將各樹脂成分混合攪拌後,使光聚合起始劑加熱溶解。然後,適當添加填料、增稠劑等並攪拌。然後,藉由三輥磨機使其分散,並以金屬網(關西金網股份有限公司製,材質SVS316,斜紋織法(twilling),網眼大小為635篩)過濾,而調製液晶滴入工法用密封劑。
在所調製之液晶滴入工法用密封劑中混合做為間隙材之5μm之玻璃纖維(日本電器硝子股份有限公司製,PF-50S)並填充於注射器、消泡後,藉由分配器(MUSASHI ENGINEERING公司製,SHOTMASTER 300)以描繪長方形之方式於玻璃基板上進行塗佈。對於如此製得之密封劑塗佈基板,將適量之液晶滴入密封框內,並設置於真空貼合裝置中,在真空中將另一基板疊合。使其回到大氣壓後,以肉眼確認其直線性。就直線性而言,以未發生斷線與起伏且線寬固定者為○,有斷線或起伏之任一者、或是線寬不固定者為△,有斷線或起伏之任一者且線寬不固定者為×。進一步觀察10分鐘後,發生密封破裂者為×,有滲入但未破裂者為△,未滲入、破裂者為○。
(1) 雙酚A型環氧丙烯酸酯:R-93100(日本化藥股份有限公司製)
(2) 間苯二酚二環氧丙基醚與丙烯酸之反應物
(3) 甲基丙烯酸酯改質環氧丙烯酸酯:RM-93100(日本化藥股份有限公司製)
(4) 間苯二酚二環氧丙基醚
(5) 酚芳烷基型環氧樹脂:YDF-8170C(東都化成股份有限公司製)
(6) 酚芳烷基型環氧樹脂:EPPN501H(日本化藥股份有限公司製)
(7) 1-[4-(2-羥基乙氧基)苯基]-2-羥基-2-甲基-1-丙-1-酮:Irgacure 2959(Ciba Specialty Chemical公司製)
(8) N-2-(胺基乙基)-3-胺基丙基三甲氧基矽烷:KBM-603(信越化學工業股份有限公司製,KBM-603)
(9) 3-環氧丙氧基丙基三甲氧基矽烷:SILA-ACE S-510(CHISSO股份有限公司製)
(10) 間酞酸二醯肼:IDH-S(大塚化學股份有限公司製)
(11) 1,3-雙(卡肼基乙基)-5-異丙基尿囊素:AMICURE VDH(味之素Fine Techno股份有限公司)
(12) 聚矽氧橡膠粉末:KMP-594(信越化學工業股份有限公司製)
(13) 聚矽氧複合粉末:KMP-600(信越化學工業股份有限公司製)
(14) 核殼型丙烯酸系共聚物:F-351S(GANZ化成股份有限公司製)
(15) 次微米球狀填料:X-24-9163A(信越化學工業股份有限公司製)
(16) 氧化鋁:SPC-AL(C. I.化成股份有限公司製)
(17) 橡膠:Paraloid EXL-2655(大阪化成股份有限公司製)
(18) 氧化矽:SP-1B(扶桑化學工業股份有限公司製)
※聚矽氧複合粉末:聚矽氧橡膠粉末之表面經聚矽氧樹脂被覆之球狀粉末
由上述得知,本發明之液晶密封劑係由於初期黏度低,故塗佈時之直線性優良,並且在液晶滲入密封劑中之滲入性方面也具有良好的性質。另一方面得知,比較例之液晶密封劑係由於初期黏度高,故液晶滲入密封劑中之滲入性方面雖優良,但直線性不良,並未如本發明之液晶密封劑般滿足任一特性。因此,本案發明之液晶密封劑係歷經步驟而於基板塗佈之作業性、液晶滴入工法時之滲入性皆優良,可謂可靠性高者。
Claims (9)
- 一種液晶密封劑,係包含(a)聚矽氧橡膠粉末及(d)光硬化樹脂,且使用E型黏度計測得之25℃時之黏度為100Pa.s以下者。
- 如申請專利範圍第1項之液晶密封劑,其中,(d)光硬化樹脂係環氧丙烯酸酯。
- 如申請專利範圍第1項之液晶密封劑,其中,復包含(b)胺基矽烷耦合劑。
- 如申請專利範圍第3項之液晶密封劑,其中,復包含(c)球狀填料。
- 如申請專利範圍第4項之液晶密封劑,其中,復包含(e)光自由基聚合起始劑。
- 如申請專利範圍第5項之液晶密封劑,其中,復包含(f)熱硬化樹脂及/或(g)熱硬化劑。
- 如申請專利範圍第6項之液晶密封劑,其中,(f)熱硬化樹脂係環氧樹脂,(g)熱硬化劑係有機醯肼。
- 如申請專利範圍第7項之液晶密封劑,其中,復包含(h)平均粒徑為3μm以下之無機填料。
- 一種液晶顯示單元,係經使申請專利範圍第1至8項中任一項之液晶密封劑硬化而得之硬化物密封者。
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| SG11201507073UA (en) * | 2013-03-07 | 2015-10-29 | Nippon Kayaku Kk | Method for manufacturing liquid-crystal display cells and liquid-crystal display cells obtained via said method |
| JP6253638B2 (ja) | 2013-03-21 | 2017-12-27 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
| WO2014185374A1 (ja) * | 2013-05-15 | 2014-11-20 | 積水化学工業株式会社 | 液晶滴下工法用シール剤、上下導通材料、及び、液晶表示素子 |
| WO2014189110A1 (ja) * | 2013-05-24 | 2014-11-27 | 積水化学工業株式会社 | 液晶滴下工法用シール剤、上下導通材料、及び、液晶表示素子 |
| WO2015002067A1 (ja) * | 2013-07-03 | 2015-01-08 | 積水化学工業株式会社 | 液晶滴下工法用シール剤、上下導通材料、液晶表示素子、及び、遮光性柔軟シリコーン粒子 |
| JP6338586B2 (ja) * | 2013-08-23 | 2018-06-06 | 三井化学株式会社 | 液晶シール剤、および液晶表示パネルの製造方法 |
| JP6235297B2 (ja) * | 2013-10-16 | 2017-11-22 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
| JP6238761B2 (ja) * | 2014-01-20 | 2017-11-29 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
| CN103897645B (zh) * | 2014-03-20 | 2015-12-02 | 京东方科技集团股份有限公司 | 一种封框胶及其制备方法 |
| KR101974708B1 (ko) | 2014-07-24 | 2019-05-02 | 미쓰이 가가쿠 가부시키가이샤 | 액정 시일제, 및 액정 표시 패널의 제조 방법 |
| JP6588825B2 (ja) * | 2014-08-07 | 2019-10-09 | 積水化学工業株式会社 | 液晶滴下工法用シール剤、上下導通材料、及び、液晶表示素子 |
| TWI690564B (zh) * | 2014-08-26 | 2020-04-11 | 日商琳得科股份有限公司 | 硬化性組合物、硬化性組合物之製造方法、硬化物、硬化性組合物之使用方法以及光裝置 |
| WO2016047496A1 (ja) * | 2014-09-24 | 2016-03-31 | 積水化学工業株式会社 | 液晶表示素子用シール剤、上下導通材料、及び、液晶表示素子 |
| CN104817967B (zh) * | 2015-05-12 | 2018-01-30 | 建湖县高新投资发展有限公司 | 一种lcd封装用紫外光固化胶及其制备方法 |
| JP6810659B2 (ja) * | 2017-06-06 | 2021-01-06 | 日本化薬株式会社 | 電子部品用樹脂組成物 |
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| TW200303439A (en) * | 2002-02-04 | 2003-09-01 | Mitsui Chemicals Inc | Method for producing liquid crystal display cell and sealing agent for liquid crystal display cell |
| TW200619789A (en) * | 2004-09-06 | 2006-06-16 | Nippon Kayaku Kk | Liquid crystal sealing material and liquid crystal display cell using same |
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