TW202212142A - Polarizing plate with pressure-sensitive adhesive layer - Google Patents
Polarizing plate with pressure-sensitive adhesive layer Download PDFInfo
- Publication number
- TW202212142A TW202212142A TW110118264A TW110118264A TW202212142A TW 202212142 A TW202212142 A TW 202212142A TW 110118264 A TW110118264 A TW 110118264A TW 110118264 A TW110118264 A TW 110118264A TW 202212142 A TW202212142 A TW 202212142A
- Authority
- TW
- Taiwan
- Prior art keywords
- adhesive layer
- layer
- polarizing plate
- polarizer
- adhesive
- Prior art date
Links
- 239000010410 layer Substances 0.000 title claims abstract description 156
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title abstract description 7
- 239000012790 adhesive layer Substances 0.000 claims abstract description 206
- 230000001681 protective effect Effects 0.000 claims abstract description 67
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 42
- 239000011630 iodine Substances 0.000 claims abstract description 42
- 230000035699 permeability Effects 0.000 claims abstract description 32
- 229920001477 hydrophilic polymer Polymers 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims description 60
- 230000001070 adhesive effect Effects 0.000 claims description 60
- 239000004973 liquid crystal related substance Substances 0.000 claims description 49
- 239000002346 layers by function Substances 0.000 claims description 33
- 230000009975 flexible effect Effects 0.000 claims description 14
- 229920000178 Acrylic resin Polymers 0.000 claims description 11
- 239000004925 Acrylic resin Substances 0.000 claims description 11
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- 229920005672 polyolefin resin Polymers 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 description 127
- 229920005989 resin Polymers 0.000 description 38
- 239000011347 resin Substances 0.000 description 38
- 150000001875 compounds Chemical class 0.000 description 32
- 239000000203 mixture Substances 0.000 description 32
- -1 polyparaphenylene Polymers 0.000 description 29
- 229920000642 polymer Polymers 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000000034 method Methods 0.000 description 18
- 239000000758 substrate Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 238000005259 measurement Methods 0.000 description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 11
- 239000011521 glass Substances 0.000 description 10
- 239000000178 monomer Substances 0.000 description 9
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 9
- 229920002678 cellulose Polymers 0.000 description 8
- 239000001913 cellulose Substances 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 238000003795 desorption Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229920001225 polyester resin Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000003431 cross linking reagent Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 239000004988 Nematic liquid crystal Substances 0.000 description 4
- 206010040844 Skin exfoliation Diseases 0.000 description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000005401 electroluminescence Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 229920002284 Cellulose triacetate Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- 239000004697 Polyetherimide Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 150000001925 cycloalkenes Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 229920001601 polyetherimide Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920005673 polypropylene based resin Polymers 0.000 description 3
- 239000011118 polyvinyl acetate Substances 0.000 description 3
- 229920002689 polyvinyl acetate Polymers 0.000 description 3
- 229920001289 polyvinyl ether Polymers 0.000 description 3
- 239000005268 rod-like liquid crystal Substances 0.000 description 3
- LWRBVKNFOYUCNP-UHFFFAOYSA-N 2-methyl-1-(4-methylsulfanylphenyl)-2-morpholin-4-ylpropan-1-one Chemical compound C1=CC(SC)=CC=C1C(=O)C(C)(C)N1CCOCC1 LWRBVKNFOYUCNP-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 239000004985 Discotic Liquid Crystal Substance Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 150000001241 acetals Chemical class 0.000 description 2
- 229940081735 acetylcellulose Drugs 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920005994 diacetyl cellulose Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920005678 polyethylene based resin Polymers 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical class CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 1
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001299 aldehydes Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000005345 chemically strengthened glass Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- ZHNUHDYFZUAESO-UHFFFAOYSA-N formamide Substances NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003050 poly-cycloolefin Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000768 polyamine Chemical class 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000004846 water-soluble epoxy resin Substances 0.000 description 1
Images
Classifications
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- 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
-
- 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
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Organic Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
本發明係關於一種附黏著劑層的偏光板,進一步亦有關於一種包含該附黏著劑層的偏光板之圖像顯示裝置。 The present invention relates to a polarizing plate with an adhesive layer, and further relates to an image display device including the polarizing plate with the adhesive layer.
在專利文獻1中,已提出一種附黏著劑層的偏光板,其係在偏光片之一側隔著接著劑層而積層有偏光片保護膜,且在另一側積層有黏著劑層。 In Patent Document 1, an adhesive layer-attached polarizer is proposed, wherein a polarizer protective film is laminated on one side of the polarizer with an adhesive layer interposed therebetween, and an adhesive layer is laminated on the other side.
[先前技術文獻] [Prior Art Literature]
[專利文獻] [Patent Literature]
[專利文獻1]日本特開2012-247574號公報 [Patent Document 1] Japanese Patent Laid-Open No. 2012-247574
本發明之目的在於提供一種附黏著劑層的偏光板,其即使在高溫高濕環境下亦抑制碘脫離,並容易解決捲曲。 An object of the present invention is to provide a polarizing plate with an adhesive layer, which suppresses iodine detachment even in a high-temperature and high-humidity environment and can easily solve curling.
本發明係提供以下之附黏著劑層的偏光板、及圖像顯示裝置。 The present invention provides a polarizing plate with the following adhesive layer, and an image display device.
[1]一種附黏著劑層的偏光板,係具備: [1] A polarizing plate with an adhesive layer, comprising:
偏光片、隔著接著劑層配置在前述偏光片之一側之保護膜、及配置於前述偏光片之另一側的第1黏著劑層;其中, A polarizer, a protective film disposed on one side of the polarizer via an adhesive layer, and a first adhesive layer disposed on the other side of the polarizer; wherein,
前述偏光片為使親水性高分子膜吸附碘而成之膜, The above-mentioned polarizer is a film formed by adsorbing iodine to a hydrophilic polymer film,
前述第1黏著劑層在溫度40℃、相對濕度90%R.H.之透濕度為180g/(m2‧day)以上1500g/(m2‧day)以下。 The moisture permeability of the first adhesive layer at a temperature of 40° C. and a relative humidity of 90% RH is 180 g/(m 2 ·day) or more and 1500 g/(m 2 ·day) or less.
[2]如[1]所述之附黏著劑層的偏光板,其中,前述第1黏著劑層為由包含(甲基)丙烯酸系樹脂之黏著劑所構成的層。 [2] The polarizing plate with an adhesive layer according to [1], wherein the first adhesive layer is a layer composed of an adhesive containing a (meth)acrylic resin.
[3]如[1]或[2]所述之附黏著劑層的偏光板,其中,前述第1黏著劑層之厚度為10μm以上。 [3] The polarizing plate with an adhesive layer according to [1] or [2], wherein the thickness of the first adhesive layer is 10 μm or more.
[4]如[1]至[3]中任一項所述之附黏著劑層的偏光板,其中,前述保護膜為由環狀聚烯烴系樹脂所構成的膜。 [4] The polarizing plate with an adhesive layer according to any one of [1] to [3], wherein the protective film is a film made of a cyclic polyolefin-based resin.
[5]一種可撓性圖像顯示裝置用積層體,係具備[1]至[4]中任一項所述之附黏著劑層的偏光板、及前面板或觸控感測器。 [5] A laminate for a flexible image display device, comprising the polarizing plate with the adhesive layer according to any one of [1] to [4], and a front panel or a touch sensor.
[6]一種圖像顯示裝置,係具有[1]至[4]中任一項所述之附黏著劑層的偏光板。 [6] An image display device, which is a polarizing plate having the adhesive layer according to any one of [1] to [4].
[7]一種附黏著劑層的偏光板,係具備偏光片、及隔著接著劑層配置在前述偏光片之一側之保護膜,並且在前述偏光片之另一側從偏光片側起依序具備第2黏著劑層、功能層、及第1黏著劑層;其中, [7] An adhesive layer-attached polarizing plate, comprising a polarizer and a protective film disposed on one side of the polarizer with the adhesive layer interposed therebetween, and in order from the polarizer side on the other side of the polarizer It has a second adhesive layer, a functional layer, and a first adhesive layer; wherein,
前述功能層為液晶硬化層單獨之單層、或選自由液晶硬化層、定向層及貼合層之群組中的2層以上之多層, The above-mentioned functional layer is a single layer of the liquid crystal hardening layer alone, or a multi-layer of two or more layers selected from the group of the liquid crystal hardening layer, the alignment layer and the bonding layer,
前述偏光片為使親水性高分子膜吸附碘而成之膜, The above-mentioned polarizer is a film formed by adsorbing iodine to a hydrophilic polymer film,
由前述第2黏著劑層、前述功能層及前述第1黏著劑層所構成之積層體在溫度40℃、相對濕度90%R.H.之透濕度為180g/(m2‧day)以上1500g/(m2‧day)以下。 The moisture permeability of the laminate composed of the second adhesive layer, the functional layer and the first adhesive layer at a temperature of 40°C and a relative humidity of 90% RH is 180g/(m 2 ·day) or more and 1500g/(m 2 ‧day) or less.
[8]如[7]所述之附黏著劑層的偏光板,其中,前述保護膜為由環狀聚烯烴系樹脂所構成的膜。 [8] The polarizing plate with an adhesive layer according to [7], wherein the protective film is a film made of a cyclic polyolefin-based resin.
[9]如[7]或[8]所述之附黏著劑層的偏光板,其中,前述功能層包含第1液晶硬化層及第2液晶硬化層。 [9] The polarizing plate with an adhesive layer according to [7] or [8], wherein the functional layer includes a first liquid crystal cured layer and a second liquid crystal cured layer.
[10]一種可撓性圖像顯示裝置用積層體,係具備:[7]至[9]中任一項所述之附黏著劑層的偏光板、及前面板或觸控感測器。 [10] A laminate for a flexible image display device, comprising: the polarizing plate with the adhesive layer according to any one of [7] to [9], and a front panel or a touch sensor.
[11]一種圖像顯示裝置,係具有[7]至[9]中任一項所述之附黏著劑層的偏光板。 [11] An image display device, which is a polarizing plate having the adhesive layer described in any one of [7] to [9].
若依據本發明,可提供一種附黏著劑層的偏光板,其即使在高溫高濕環境下亦抑制碘脫離並容易解決捲曲。 According to the present invention, a polarizing plate with an adhesive layer can be provided, which can suppress iodine detachment and easily resolve curl even in a high temperature and high humidity environment.
11:保護膜 11: Protective film
12:接著劑層 12: Adhesive layer
10:偏光片 10: Polarizer
13:第1黏著劑層 13: The first adhesive layer
14:第2黏著劑層 14: Second Adhesive Layer
15:功能層 15: Functional layer
21:經捲曲之附黏著劑層的偏光板之試樣 21: Sample of polarizing plate with curled adhesive layer
23:假想面 23: Imaginary face
25:基準面 25: Datum plane
50:附黏著劑層的偏光板之端部(端部) 50: End (end) of polarizing plate with adhesive layer
51:碘脫離區域 51: Iodine detachment region
52:不產生碘脫離之區域(非碘脫離區域) 52: The region that does not produce iodine detachment (non-iodine detachment region)
100:附黏著劑層的偏光板(第1偏光板) 100: Polarizing plate with adhesive layer (first polarizing plate)
200:附黏著劑層的偏光板(第2偏光板) 200: Polarizing plate with adhesive layer (second polarizing plate)
T:穿透軸方向 T: Penetration axis direction
A,B,C,D:假想面之角 A,B,C,D: corners of imaginary faces
A1,B1,C1,D1:試樣之角 A1,B1,C1,D1: corners of the sample
H:捲曲高度 H: curl height
圖1係表示本發明之附黏著劑層的偏光板之一例的概略剖面圖。 FIG. 1 is a schematic cross-sectional view showing an example of a polarizing plate with an adhesive layer of the present invention.
圖2係表示本發明之附黏著劑層的偏光板之另一例的概略剖面圖。 FIG. 2 is a schematic cross-sectional view showing another example of the polarizing plate with the adhesive layer of the present invention.
圖3係表示碘脫離評估用試樣之設置方法的概略圖。 Fig. 3 is a schematic diagram showing a method of setting a sample for evaluating iodine release.
圖4係表示實施例1所得到之附黏著劑層的偏光板之在光學顯微鏡下的觀察圖像之圖。 4 is a view showing an observation image under an optical microscope of the polarizing plate with the adhesive layer obtained in Example 1. FIG.
圖5係表示將實施例1所得到之附黏著劑層的偏光板之觀察圖像轉換成黑白256色階而得之數據的一例之圖。 FIG. 5 is a diagram showing an example of data obtained by converting the observed image of the polarizing plate with the adhesive layer obtained in Example 1 into black and white 256 gradation.
圖6係表示捲曲高度之測定方法的概略圖。 Fig. 6 is a schematic diagram showing a method of measuring the curl height.
以下,一邊參照圖式一邊說明本發明之實施型態,但本發明係不限定於以下之實施型態。在以下之全部圖式中,為了容易理解各構成要素,適當調整縮尺而表示,且圖式所示之各構成要素之縮尺與實際之構成要素之縮尺未必一致。 Hereinafter, the embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. In all the drawings below, in order to facilitate understanding of each component, the scale is appropriately adjusted and shown, and the scale of each component shown in the drawings does not necessarily match the scale of the actual component.
<附黏著劑層的偏光板> <Polarizing plate with adhesive layer>
[第1實施態樣] [the first embodiment]
本發明之第1實施態樣的附黏著劑層的偏光板(以下,亦稱為第1偏光板)係具備:偏光片、隔著接著劑層配置在偏光片之一側之保護膜、及配置於偏光片之另一側的第1黏著劑層。將第1偏光板之層構成之一例表示於圖1中。圖1所示之第1偏光板100係依序具備保護膜11、接著劑層12、偏光片10、及第1黏著劑層13。
The polarizing plate with an adhesive layer (hereinafter, also referred to as a first polarizing plate) according to the first embodiment of the present invention includes a polarizing plate, a protective film arranged on one side of the polarizing plate with the adhesive layer interposed therebetween, and The first adhesive layer on the other side of the polarizer. An example of the layer structure of the first polarizing plate is shown in FIG. 1 . The first polarizing
第1偏光板100較佳係僅由保護膜11、接著劑層12、偏光片10、及第1黏著劑層13所構成。第1偏光板100較佳係在偏光片10之一面僅隔著接著劑層12而積層保護膜11。第1偏光板100較佳係在偏光片10之與接著劑層12側為相反側之面直接積層第1黏著劑層13。在第1偏光板100僅由保護膜11、接著劑層12、偏光片10、及第1黏著劑層13所構成時,第1偏光板100可使用來作為附黏著劑層的直線偏光板。
The
第1偏光板100之厚度會因對第1偏光板100所要求之功能及第1偏光板100之用途等而異,故無特別限定,但例如可為5μm以上,亦可為10μm以上,例如可為200μm以下,亦可為150μm以下、120μm以下、100μm以下、80μm以下、70μm以下。
The thickness of the first
[偏光片] [Polarizer]
偏光片10係具有如下性質,該性質為:吸收具有平行於其吸收軸之振動面的直線偏光,並使具有與吸收軸正交(與穿透軸平行)的振動面之直線偏光進行穿透。偏光片10為使親水性高分子膜吸附碘而成之膜。偏光片10例如可經過下列步驟進行製造:使親水性高分子膜進行單軸延伸之步驟;藉由使親水性高分子膜以碘進行染色,而吸附該碘之步驟;以硼酸水溶液處理吸附有碘之親水性高分子膜之步驟;及在以硼酸水溶液所進行之處理後進行水洗之步驟。
The
親水性高分子膜例如可列舉聚乙烯醇系樹脂膜等。聚乙烯醇系樹脂係可藉由使聚乙酸乙烯酯系樹脂進行皂化而獲得。聚乙酸乙烯酯系樹脂除了可使用屬於乙酸乙烯酯之均聚物的聚乙酸乙烯酯以外,尚可使用乙酸乙烯酯與可和乙酸乙烯酯共聚合之其他的單體之共聚物。可和乙酸乙烯酯共聚合之其他的單體例如可列舉不飽和羧酸系化合物、烯烴系化合物、乙烯基醚系化合物、不飽和碸系化合物、具有銨基之(甲基)丙烯醯胺系化合物。在本說明書中,所謂「(甲基)丙烯酸」係意指選自丙烯酸及甲基丙烯酸之至少一者。在「(甲基)丙烯酸酯」等之中亦相同。 As a hydrophilic polymer film, a polyvinyl alcohol-type resin film etc. are mentioned, for example. The polyvinyl alcohol-based resin can be obtained by saponifying a polyvinyl acetate-based resin. As the polyvinyl acetate resin, in addition to polyvinyl acetate, which is a homopolymer of vinyl acetate, copolymers of vinyl acetate and other monomers that can be copolymerized with vinyl acetate can be used. Examples of other monomers that can be copolymerized with vinyl acetate include unsaturated carboxylic acid-based compounds, olefin-based compounds, vinyl ether-based compounds, unsaturated sulfonic acid-based compounds, and (meth)acrylamide-based compounds having an ammonium group. compound. In this specification, "(meth)acrylic acid" means at least one selected from the group consisting of acrylic acid and methacrylic acid. The same applies to "(meth)acrylate" and the like.
聚乙烯醇系樹脂之皂化度通常約為85莫耳%以上100莫耳%以下,較佳係98莫耳%以上。聚乙烯醇系樹脂係可被改質,亦可使用被醛類改質 過之聚乙烯醇縮甲醛、聚乙烯醇縮乙醛等。聚乙烯醇系樹脂之聚合度通常為1000以上10000以下,較佳係1500以上5000以下。 The degree of saponification of the polyvinyl alcohol-based resin is usually about 85 mol % or more and 100 mol % or less, preferably 98 mol % or more. Polyvinyl alcohol-based resins can be modified or modified with aldehydes Over polyvinyl formal, polyvinyl acetal, etc. The degree of polymerization of the polyvinyl alcohol-based resin is usually 1,000 or more and 10,000 or less, preferably 1,500 or more and 5,000 or less.
偏光片10係藉由碘被吸附定向,且硼之含量為5.5質量%以下,較佳係5.0質量%以下,更佳係4.5質量%以下之構成,可抑制因加熱所產生之收縮。硼之含量係以0.5質量%以上為較佳,以1質量%以上為更佳,可為2質量%以上。藉由使硼之含量為0.5質量%以上,可安定地保持碘,並可期待抑制褪色。
The
偏光片10之厚度通常為30μm以下,較佳係15μm以下,更佳係13μm以下,再更佳係10μm以下,特別佳係8μm以下。偏光片10之厚度通常為2μm以上,以3μm以上為較佳,例如可為5μm以上。
The thickness of the
[保護膜] [protective film]
保護膜11係可配置於偏光片10之單側,且可具有保護偏光片10之功能。保護膜11係可設為由光學上透明的熱塑性樹脂(例如環狀聚烯烴系樹脂;包括三乙醯基纖維素、二乙醯基纖維素等樹脂的乙酸纖維素系樹脂;包括聚對苯二甲酸乙二酯、聚萘二甲酸乙二酯、聚對苯二甲酸丁二酯等樹脂的聚酯系樹脂;聚碳酸酯系樹脂;(甲基)丙烯酸系樹脂;聚丙烯系樹脂,此等中之1種或2種以上之混合物)所構成的塗敷層或膜。
The
可在保護膜11上形成硬塗層。硬塗層係可形成於保護膜11之一面,亦可形成於兩面。可藉由設有硬塗層,而設為提高了硬度及耐刮性之保護膜11。硬塗層例如可為丙烯酸系樹脂、聚矽氧系樹脂、聚酯系樹脂、胺基甲酸酯(urethane)系樹脂、醯胺系樹脂、環氧系樹脂等之硬化層。硬塗層係為了提高強度,可包含添加劑。
A hard coat layer may be formed on the
添加劑並無限定,可列舉無機系微粒子、有機系微粒子、或此等之混合物。硬塗層例如為紫外線硬化型樹脂之硬化層。紫外線硬化型樹脂例如可列舉丙烯酸系樹脂、聚矽氧系樹脂、聚酯系樹脂、胺基甲酸酯系樹脂、醯胺系樹脂、環氧系樹脂等。 The additives are not limited, and examples thereof include inorganic fine particles, organic fine particles, or a mixture thereof. The hard coat layer is, for example, a hardened layer of an ultraviolet curable resin. Examples of ultraviolet curable resins include acrylic resins, polysiloxane-based resins, polyester-based resins, urethane-based resins, amide-based resins, epoxy-based resins, and the like.
保護膜11之厚度通常為1μm以上100μm以下,從強度及處理性等之觀點而言,以5μm以上80μm以下為較佳,以8μm以上60μm以下為更佳,以12μm以上45μm以下為再更佳,可為30μm以下。
The thickness of the
[接著劑層] [adhesive layer]
接著劑層12係可中介於保護膜11與偏光片10之間而貼合兩者。會形成接著劑層12之接著劑可列舉水系接著劑、活性能量線硬化性接著劑、或熱硬化性接著劑,較佳係使用水系接著劑、活性能量線硬化性接著劑。隔著接著劑層12所貼合之相對向的保護膜11與偏光片10之表面係可預先進行電暈處理、電漿處理、火焰處理等,亦可具有底塗(primer)層等。
The
從確保接合性之觀點而言,接著劑層12之厚度為0.01μm以上10μm以下。
From the viewpoint of securing the bondability, the thickness of the
[第1黏著劑層] [1st adhesive layer]
在第1實施態樣中,第1黏著劑層13在溫度40℃、相對濕度90%R.H.之透濕度(以下,亦簡稱為「透濕度」)為180g/(m2‧day)以上1500g/(m2‧day)以下。透濕度係依據在後述之實施例之欄中說明的測定方法來測定。
In the first embodiment, the moisture permeability of the first
附黏著劑層的偏光板係隔著該黏著劑層而貼合於有機EL顯示元件或液晶單元(通常係無機玻璃面)。偏光片為親水性樹脂膜時,會有在貼合於無機玻璃面之後的耐濕熱性差的傾向,在偏光片之端部碘會脫離,而有容易產生所
謂碘脫離之傾向。尤其,在偏光片之一側僅隔著接著劑層而配置保護膜,另一側直接配置黏著劑層之附黏著劑層的偏光板中,會有容易產生碘脫離之傾向。第1偏光板100係藉由使第1黏著劑層13之透濕度為1500g/(m2‧day)以下,而有容易抑制碘脫離之傾向。又,在偏光片之兩面分別隔著接著劑層而積層有保護膜時(兩面保護型偏光板),會有不容易產生如此之碘脫離的傾向。
The polarizing plate with the adhesive layer is bonded to an organic EL display element or a liquid crystal cell (usually an inorganic glass surface) via the adhesive layer. When the polarizer is a hydrophilic resin film, it tends to have poor heat-and-moisture resistance after being attached to the inorganic glass surface, and iodine is detached at the end of the polarizer, and so-called iodine detachment tends to occur easily. In particular, a polarizer in which a protective film is placed on one side of the polarizer with only an adhesive layer interposed therebetween, and an adhesive layer with an adhesive layer directly placed on the other side of the polarizer, tends to easily desorb from iodine. The first
又,相較於黏著劑層,附黏著劑層的偏光板所具備之保護膜通常較為剛直。因此,附黏著劑層的偏光板係在偏光片之一側僅隔著接著劑層而貼合保護膜,並在另一側直接貼合黏著劑層來製造時,相較於在兩面具有保護膜之偏光板,如此方式所製造之附黏著劑層的偏光板係有容易產生捲曲之傾向。雖可藉由在與貼合步驟為相異之環境下(例如,常溫高濕下)進行保管來解決捲曲,但希望解決捲曲所需要之時間短。第1偏光板100係藉由使第1黏著劑層13之透濕度為180g/(m2‧day)以上,而有容易以比較短的時間解決捲曲之傾向。
Moreover, compared with the adhesive layer, the protective film of the polarizing plate with the adhesive layer is usually relatively rigid. Therefore, when a polarizer with an adhesive layer is attached to the protective film on one side of the polarizer with only the adhesive layer interposed therebetween, and the adhesive layer is directly attached to the other side to manufacture, compared with having protection on both sides The polarizing plate of the film and the polarizing plate with the adhesive layer produced in this way tend to be curled easily. Although the curl can be solved by storing in a different environment from the bonding step (for example, under normal temperature and high humidity), it is desirable that the time required to solve the curl be short. The first
從碘脫離之抑制及捲曲解決時間縮短的觀點而言,第1黏著劑層13之透濕度較佳係300g/(m2‧day)以上1400g/(m2‧day)以下,更佳係500g/(m2‧day)以上1300g/(m2‧day)以下,再更佳係700g/(m2‧day)以上1200g/(m2‧day)以下。
From the viewpoints of suppressing iodine detachment and shortening the curl resolution time, the moisture permeability of the first
第1黏著劑層13之透濕度例如可藉由黏著劑組成物之成分的種類及比率之選擇、交聯密度等進行調節。此外,亦可藉由複數個透濕度相異的黏著劑之積層進行調整。交聯密度係可藉由製造條件之變更或適當地選擇交聯劑之種類或量來調整。以黏著劑之積層所進行的透濕度之調整方法例如可藉由適當地決定低透濕黏著劑層與高透濕黏著劑之厚度的比率來調整。使用於積層之
低透濕黏著劑例如可列舉以橡膠系樹脂作為主成分之黏著劑,使用於光學用途之丙烯酸系的黏著劑大多為較高透濕者。
The moisture permeability of the first
第1黏著劑層13係可使以如(甲基)丙烯酸系、橡膠系、胺基甲酸酯系、酯系、聚矽氧系、聚乙烯基醚系之類的樹脂作為主成分之黏著劑組成物以一個或複數個之層進行構成。其中,較佳係適合包含以透明性、耐候性、耐熱性等優異之(甲基)丙烯酸系樹脂作為基質聚合物(base polymer)之黏著劑組成物。黏著劑組成物可為活性能量線硬化型、或熱硬化型。
The first
使用於黏著劑組成物之(甲基)丙烯酸系樹脂(基質聚合物)例如適合使用以如(甲基)丙烯酸丁酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸2-乙基己酯之類的(甲基)丙烯酸酯之1種或2種以上作為單體之聚合物或共聚物。基質聚合物係以使極性單體共聚合為較佳。極性單體例如可列舉(甲基)丙烯酸、(甲基)丙烯酸2-羥基丙酯、(甲基)丙烯酸羥基乙酯、(甲基)丙烯醯胺、(甲基)丙烯酸N,N-二甲基胺基乙酯、(甲基)丙烯酸縮水甘油酯之類的具有羧基、羥基、醯胺基、胺基、環氧基等的單體。 The (meth)acrylic resin (matrix polymer) used in the adhesive composition is suitable, for example, such as butyl (meth)acrylate, ethyl (meth)acrylate, isooctyl (meth)acrylate, ( A polymer or copolymer in which one or more of (meth)acrylates such as 2-ethylhexyl meth)acrylate are used as monomers. The matrix polymer preferably copolymerizes polar monomers. Examples of polar monomers include (meth)acrylic acid, 2-hydroxypropyl (meth)acrylate, hydroxyethyl (meth)acrylate, (meth)acrylamide, and N,N-di(meth)acrylate. Monomers having a carboxyl group, a hydroxyl group, an amide group, an amine group, an epoxy group, and the like, such as methylaminoethyl ester and glycidyl (meth)acrylate.
黏著劑組成物雖然可為僅包含上述基質聚合物者,但通常更含有交聯劑。交聯劑可例示:屬於2價以上之金屬離子,且會在與羧基之間形成羧酸金屬鹽者;屬於多胺化合物,且會在與羧基之間形成醯胺鍵結者;屬於聚環氧化合物或多元醇,且會在與羧基之間形成酯鍵結者;屬於聚異氰酸酯化合物,且會在與羧基之間形成醯胺鍵結者。其中,以聚異氰酸酯化合物為較佳。 Although the adhesive composition may contain only the above-mentioned matrix polymer, it usually further contains a crosslinking agent. Examples of cross-linking agents include: metal ions with a valence of 2 or more, which form a metal carboxylate with a carboxyl group; polyamine compounds, which form an amide bond with a carboxyl group; polycyclic Oxygen compounds or polyols, which form ester bonds with carboxyl groups; belong to polyisocyanate compounds, which form amide bonds with carboxyl groups. Among them, polyisocyanate compounds are preferred.
就其他之成分而言,黏著劑組成物係可含有1種或2種以上之抗靜電劑、溶劑、交聯觸媒、增黏劑(tackifier)、塑化劑、軟化劑、顏料、防銹劑、無機填充劑、有機填充劑等添加劑。 As for other components, the adhesive composition may contain one or more antistatic agents, solvents, cross-linking catalysts, tackifiers, plasticizers, softeners, pigments, rust inhibitors additives, inorganic fillers, organic fillers, etc.
第1黏著劑層13之厚度例如可為3μm以上,較佳係5μm以上,更佳係10μm以上。第1黏著劑層13之厚度例如可為50μm以下,較佳係40μm以下,更佳係30μm以下,就薄型化之點而言,更佳係27μm以下。
The thickness of the first
[其他之層] [Other layers]
就其他之層而言,第1偏光板100係可包含用以保護表面(保護膜11表面等)之防護膜、積層於第1黏著劑層13之外表面的分離膜(以下,亦稱為分離片)。
As for other layers, the first
[防護膜] [protective film]
防護膜係例如在圖像顯示元件或其他之光學構件貼合偏光板之後,連同其具有之黏著劑層一起被剝離去除。 The protective film is, for example, peeled off and removed together with the adhesive layer it has after the image display element or other optical members are attached to the polarizing plate.
防護膜係由例如基材膜與積層於其上之黏著劑層所構成。有關黏著劑層係引用上述之敘述。 The protective film is composed of, for example, a base film and an adhesive layer laminated thereon. Regarding the adhesive layer, the above description is cited.
構成基材膜之樹脂例如可為如聚乙烯之類的聚乙烯系樹脂、如聚丙烯之類的聚丙烯系樹脂、如聚對苯二甲酸乙二酯或聚萘二甲酸乙二酯之類的聚酯系樹脂、聚碳酸酯系樹脂等熱塑性樹脂。較佳係聚對苯二甲酸乙二酯等聚酯系樹脂。 The resin constituting the base film may be, for example, a polyethylene-based resin such as polyethylene, a polypropylene-based resin such as polypropylene, polyethylene terephthalate or polyethylene naphthalate, and the like. thermoplastic resins such as polyester-based resins and polycarbonate-based resins. Preferred are polyester-based resins such as polyethylene terephthalate.
[分離膜] [separation membrane]
分離膜可為由聚乙烯等聚乙烯系樹脂、聚丙烯等聚丙烯系樹脂、聚對苯二甲酸乙二酯等聚酯系樹脂等所構成的膜。其中,以聚對苯二甲酸乙二酯之延伸膜為較佳。分離膜係可對表面施予剝離處理。 The separation membrane may be a membrane composed of polyethylene-based resins such as polyethylene, polypropylene-based resins such as polypropylene, polyester-based resins such as polyethylene terephthalate, and the like. Among them, the stretched film of polyethylene terephthalate is preferred. For the separation membrane system, a peeling treatment can be applied to the surface.
[第2實施態樣] [the second embodiment]
本發明之第2實施態樣的附黏著劑層的偏光板(以下,亦稱為第2偏光板)係具備偏光片、及隔著接著劑層配置在偏光片之一側之保護膜,並且在偏光片之另一側從偏光片側起依序具備第2黏著劑層、功能層、及第1黏著劑層。將第2偏
光板之層構成之一例表示於圖2。圖2係第2偏光板之一例之概略剖面圖。圖2所示之第2偏光板200係依序具備:保護膜11、接著劑層12、偏光片10、第2黏著劑層14、功能層15、及第1黏著劑層13。
The polarizing plate with an adhesive layer (hereinafter, also referred to as a second polarizing plate) according to the second embodiment of the present invention includes a polarizer and a protective film arranged on one side of the polarizer with the adhesive layer interposed therebetween, and The other side of the polarizer includes a second adhesive layer, a functional layer, and a first adhesive layer in this order from the polarizer side. bias the 2nd
An example of the layer structure of the light plate is shown in FIG. 2 . FIG. 2 is a schematic cross-sectional view of an example of a second polarizing plate. The second
第2偏光板200較佳係僅由保護膜11、接著劑層12、偏光片10、第2黏著劑層14、功能層15、及第1黏著劑層13所構成。第2偏光板200較佳係在偏光片10之一側僅隔著接著劑層12而積層保護膜11。第2偏光板200較佳係在偏光片10之與接著劑層12側為相反側之面直接積層第2黏著劑層14。
The
在第2偏光板200中之保護膜11、接著劑層12及偏光片10係分別適用在上述之第1偏光板100中的保護膜11、接著劑層12、第1黏著劑層13及偏光片10之說明。又,第2偏光板200係可包含在上述之第1偏光板100中所敘述之防護膜或分離膜等其他之層。
The
[第1黏著劑層及第2黏著劑層] [1st adhesive layer and 2nd adhesive layer]
第1黏著劑層13係可具有用以使第2偏光板200貼合於圖像顯示裝置之功能。第2黏著劑層14係可中介於偏光片10與功能層15之間而接合兩者。第1黏著劑層13及第2黏著劑層14係可由以如(甲基)丙烯酸系、橡膠系、胺基甲酸酯系、酯系、聚矽氧系、聚乙烯基醚系之類的樹脂作為主成分之黏著劑組成物所構成。形成第1黏著劑層13之黏著劑組成物(以下,亦稱為「第1黏著劑組成物」)及形成第2黏著劑層14之黏著劑組成物(以下,亦稱為「第2黏著劑組成物」)可為相同種類,亦可為相異種類。第1及第2黏著劑組成物適合為以透明性、耐候性、耐熱性等優異之(甲基)丙烯酸系樹脂作為基質聚合物之黏著劑組成物。第1及第2黏著劑組成物可為活性能量線硬化型、熱硬化型。
The first
在第2偏光板200中之第1及第2黏著劑組成物所使用之(甲基)丙烯酸系樹脂(基質聚合物)、交聯劑及其他之成分之說明係適用在上述之第1偏光板100中所敘述的(甲基)丙烯酸系樹脂(基質聚合物)、交聯劑及其他成分之說明。
The description of the (meth)acrylic resin (matrix polymer), crosslinking agent and other components used in the first and second adhesive compositions in the second
第1黏著劑層13之透濕度例如可為10g/(m2‧day)以上,較佳係20g/(m2‧day)以上6000g/(m2‧day)以下,更佳係100g/(m2‧day)以上3000g/(m2‧day)以下,再更佳係180g/(m2‧day)以上1500g/(m2‧day)以下。
The moisture permeability of the first
第1黏著劑層13之厚度例如可為3μm以上,較佳係5μm以上,更佳係10μm以上。例如可為50μm以下,較佳係40μm以下,更佳係30μm以下,就薄型化之點而言,更佳係27μm以下。
The thickness of the first
第2黏著劑層14之厚度例如可為2μm以上30μm以下,較佳係3μm以上20μm以下。例如可為10μm以上,但就更薄型化之點而言,為15μm以下,較佳係10μm以下,尤其以7μm以下為較佳。
The thickness of the second
[功能層] [functional layer]
功能層15為液晶硬化層單獨之單層、或選自由液晶硬化層、定向層及貼合層之群組中的2層以上之多層。功能層15較佳係包含2層之液晶硬化層,更佳係包含2層之液晶硬化層隔著貼合層積層而成的層構成。
The
[液晶硬化層] [Liquid crystal hardened layer]
液晶硬化層可為由聚合性液晶化合物之硬化物所構成的相位差層,而該聚合性液晶化合物之硬化物係藉由將聚合性液晶化合物塗佈/定向於基材而顯現光學異向性。屬於聚合性液晶化合物之硬化物的相位差層可列舉第一型態至第五型態。 The liquid crystal curing layer may be a retardation layer composed of a cured product of a polymerizable liquid crystal compound that exhibits optical anisotropy by coating/orienting the polymerizable liquid crystal compound on a substrate . The retardation layer belonging to the cured product of the polymerizable liquid crystal compound includes the first to fifth types.
第一型態:棒狀液晶化合物相對於支撐基材在水平方向定向之相位差層 The first type: the retardation layer in which the rod-like liquid crystal compound is oriented in the horizontal direction with respect to the supporting substrate
第二型態:棒狀液晶化合物相對於支撐基材在垂直方向定向之相位差層 The second type: a retardation layer in which the rod-like liquid crystal compound is oriented in the vertical direction with respect to the supporting substrate
第三型態:棒狀液晶化合物在面內呈螺旋狀地改變定向之方向之相位差層 The third type: a retardation layer in which the rod-like liquid crystal compound changes the orientation direction in a helical manner in a plane
第四型態:圓盤狀液晶化合物進行傾斜定向之相位差層 The fourth type: the retardation layer of the discotic liquid crystal compound with oblique orientation
第五型態:圓盤狀液晶化合物相對於支撐基材在垂直方向定向之二軸性之相位差層 Fifth type: Biaxial retardation layer with discotic liquid crystal compound oriented in the vertical direction with respect to the supporting substrate
例如,使用於有機電致發光顯示器之光學膜係適合使用第一型態、第二型態、第五型態。或者,可使此等型態的相位差層積層而使用。 For example, the first type, the second type, and the fifth type are suitable for the optical film used in the organic electroluminescence display. Alternatively, these types of retardation layers may be laminated and used.
相位差層為由聚合性液晶化合物之定向狀態的聚合物所構成的層(以下,有時稱為「光學異向性層」)時,相位差層係以具有逆波長分散性為較佳。所謂逆波長散性係指在短波長之液晶定向面內相位差值比在長波長之液晶定向面內相位差值更小的光學特性,較佳係相位差膜滿足下述式(1)及式(2)。又,Re(λ)係表示對於波長λnm之光的面內相位差值。 When the retardation layer is a layer composed of a polymer in an alignment state of a polymerizable liquid crystal compound (hereinafter, sometimes referred to as an "optically anisotropic layer"), the retardation layer preferably has reverse wavelength dispersibility. The so-called inverse wavelength dispersion refers to the optical property that the retardation value in the liquid crystal alignment plane of short wavelength is smaller than the retardation value of the liquid crystal alignment plane of long wavelength. Preferably, the retardation film satisfies the following formula (1) and Formula (2). In addition, Re(λ) represents the in-plane retardation value with respect to light of wavelength λnm.
Re(450)/Re(550)≦1 (1) Re(450)/Re(550)≦1 (1)
1≦Re(630)/Re(550) (2) 1≦Re(630)/Re(550) (2)
相位差層為第一型態且具有逆波長分散性時,因在顯示裝置之黑色顯示時的著色會降低,故為較佳,在前述式(1)中,若為0.82≦Re(450)/Re(550)≦0.93,則為更佳。以120≦Re(550)≦150為再更佳。 When the retardation layer is of the first type and has reverse wavelength dispersion, since the coloring during black display of the display device will be reduced, it is preferable. In the aforementioned formula (1), if 0.82≦Re(450) /Re(550)≦0.93 is better. 120≦Re(550)≦150 is even better.
使用於相位差層之形成的聚合性液晶化合物可列舉液晶便覧(液晶便覧編集委員會編、丸善股份有限公司平成12年10月30日發行)之「3.8.6網路(完全交聯型)」、「6.5.1液晶材料b.聚合性向列型液晶材料」所記載之化合物中具有聚合性基之化合物、以及日本特開2010-31223號公報、日本特開 2010-270108號公報、日本特開2011-6360號公報、日本特開2011-207765號公報、日本特開2011-162678號公報、日本特開2016-81035號公報、國際公開第2017/043438號及日本特表2011-207765號公報所記載之聚合性液晶化合物等。 The polymerizable liquid crystal compound used for the formation of the retardation layer includes "3.8.6 Network (completely cross-linked type)" of "Liquid Crystal Book" (Edited by the Liquid Crystal Book Compilation Committee, published by Maruzen Co., Ltd. on October 30, 2012). , Compounds having a polymerizable group among the compounds described in "6.5.1 Liquid crystal material b. Polymerizable nematic liquid crystal material", and Japanese Patent Laid-Open No. 2010-31223 2010-270108 A, JP 2011-6360 A, JP 2011-207765 A, JP 2011-162678 A, JP 2016-81035 A, International Publication No. 2017/043438 and The polymerizable liquid crystal compound and the like described in Japanese Patent Publication No. 2011-207765.
從聚合性液晶化合物之定向狀態的聚合物製造相位差層之方法例如可列舉日本特開2010-31223號公報所記載之方法等。 The method of manufacturing a retardation layer from the polymer of the orientation state of a polymerizable liquid crystal compound, for example, the method of Unexamined-Japanese-Patent No. 2010-31223, etc. are mentioned.
屬於使聚合性液晶化合物硬化而成之液晶硬化層的相位差層之厚度例如為0.1μm以上10μm以下,較佳係0.5μm以上8μm以下,更佳係1μm以上6μm以下。 The thickness of the retardation layer belonging to the liquid crystal cured layer obtained by curing the polymerizable liquid crystal compound is, for example, 0.1 μm or more and 10 μm or less, preferably 0.5 μm or more and 8 μm or less, and more preferably 1 μm or more and 6 μm or less.
相位差層可為對穿透光賦予1/4波長份之相位差的λ/4相位差層、對穿透光賦予1/2波長份之相位差的λ/2相位差層、正A板、及正C板。功能層可包含2層之液晶硬化層。功能層包含第1液晶硬化層與第2液晶硬化層時,液晶硬化層之組合可為λ/2相位差層與λ/4相位差層之組合、λ/4相位差層與正C層之組合等。 The retardation layer can be a λ/4 retardation layer that imparts a retardation of 1/4 wavelength to the transmitted light, a λ/2 retardation layer that imparts a retardation of 1/2 wavelength to the transmitted light, and a positive A plate , and positive C plate. The functional layer may include two liquid crystal hardening layers. When the functional layer includes the first liquid crystal curing layer and the second liquid crystal curing layer, the combination of the liquid crystal curing layer can be a combination of a λ/2 retardation layer and a λ/4 retardation layer, and a combination of a λ/4 retardation layer and a positive C layer. combination, etc.
第2偏光板200係可構成為具有λ/4相位差層的圓偏光板。圓偏光板係可使用來作為抗反射用偏光板。
The second
[定向層] [Orientation layer]
定向層係可配置在上述基材與聚合性液晶化合物之硬化物的層之間。定向層係具有定向規制力,亦即使形成於其上之液晶硬化層在所希望之方向進行液晶定向。定向層可列舉:以定向性聚合物所形成之定向性聚合物層、以光定向聚合物所形成之光定向性聚合物層、在層表面具有凹凸圖型(pattern)或複數個之溝(groove)的溝定向膜。定向層之厚度例如可為10nm以上500nm以下,以10nm以上200nm以下為較佳。 The alignment layer can be arranged between the above-mentioned base material and the layer of the cured product of the polymerizable liquid crystal compound. The alignment layer has an alignment regulation force, that is, the liquid crystal hardening layer formed thereon performs liquid crystal alignment in a desired direction. Examples of the alignment layer include: an alignment polymer layer formed of an alignment polymer, a photoalignment polymer layer formed of a photoalignment polymer, a layer surface having a pattern of concavities and convexities or a plurality of grooves ( groove) of the groove-oriented film. The thickness of the alignment layer may be, for example, 10 nm or more and 500 nm or less, preferably 10 nm or more and 200 nm or less.
定向性聚合物層係可將使定向性聚合物溶解於溶劑而成之組成物塗佈於基材並去除溶劑,依需要而進行摩擦處理來形成。此時,在以定向性聚合物所形成的定向性聚合物層中,定向規制力係可藉由定向性聚合物之表面狀態、摩擦條件而任意地調整。 The oriented polymer layer can be formed by applying a composition obtained by dissolving an oriented polymer in a solvent to a substrate, removing the solvent, and performing rubbing treatment as necessary. At this time, in the alignment polymer layer formed of the alignment polymer, the alignment regulation force can be arbitrarily adjusted by the surface state and friction conditions of the alignment polymer.
光定向性聚合物層係可藉由將包含具有光反應性基之聚合物或單體與溶劑之組成物塗佈於基材層,並照射偏光而形成。此時,在光定向性聚合物層中,定向規制力係可藉由對於光定向性聚合物之偏光照射條件等而任意地調整。 The photoalignment polymer layer can be formed by applying a composition comprising a polymer or monomer having a photoreactive group and a solvent to the base material layer, and irradiating polarized light. In this case, in the photo-alignment polymer layer, the alignment regulation force can be arbitrarily adjusted by the polarized light irradiation conditions with respect to the photo-alignment polymer, and the like.
溝定向膜可藉由例如下列方法來形成,該方法為:在感光性聚醯亞胺膜表面隔著具有圖型形狀之狹縫的曝光用掩罩而進行曝光、顯像等而形成凹凸圖型的方法;在表面具有溝之板狀之母盤形成活性能量線硬化性樹脂之未硬化的層,將該層轉印至基材並進行硬化之方法;在基材形成活性能量線硬化性樹脂之未硬化的層,藉由對該層按壓具有凹凸之輥狀母盤等而形成凹凸並硬化之方法等。 The groove alignment film can be formed by, for example, a method of forming a concavo-convex pattern by exposing, developing, and the like on the surface of the photosensitive polyimide film through an exposure mask having a slit in a pattern shape. A method of forming an active-energy ray-curable resin on a plate-shaped master plate with grooves on the surface, and transferring the layer to a substrate and curing it; forming an active-energy ray-curable resin on the substrate The uncured layer of resin is a method of forming irregularities by pressing a roll-shaped master having irregularities on the layer, or the like and curing.
[貼合層] [lamination layer]
為了接合2個層,可配置貼合層。貼合層係可由接著劑或黏著劑(pressure-sensitive adhesive)所構成。功能層15包含2層之液晶硬化層時,2層之液晶硬化層係可藉由貼合層而接合。
In order to join the two layers, a bonding layer can be arranged. The adhesive layer can be composed of adhesive or pressure-sensitive adhesive. When the
在接著劑層係可使用水系接著劑、活性能量線硬化性接著劑、或熱硬化性接著劑等。從確保接合性之觀點而言,接著劑層之厚度為0.01μm以上10μm以下。 In the adhesive layer system, a water-based adhesive, an active energy ray-curable adhesive, a thermosetting adhesive, or the like can be used. From the viewpoint of securing the bondability, the thickness of the adhesive layer is 0.01 μm or more and 10 μm or less.
黏著劑係可由與形成第1及第2黏著劑層之黏著劑組成物為相同之黏著劑組成物所構成,亦可由以如(甲基)丙烯酸系、橡膠系、胺基甲酸酯系、酯系、聚矽氧系、聚乙烯基醚系之類的樹脂作為主成分之黏著劑組成物(以下,亦稱為「第3黏著劑組成物」)所構成。第3黏著劑組成物係適合為以透明性、耐候性、耐熱性等優異的(甲基)丙烯酸系樹脂作為基質聚合物之黏著劑組成物。第3黏著劑組成物可為活性能量線硬化型、熱硬化型。黏著劑層之厚度通常為0.1μm以上150μm以下,例如為3μm以上60μm以下,從薄型化之觀點而言,以30μm以下為較佳,以20μm以下為更佳。黏著劑層之厚度例如可為10μm以上,但就更薄型化之點而言,為15μm以下,較佳係10μm以下,尤其以7μm以下為較佳。 The adhesive system can be composed of the same adhesive composition as the adhesive composition that forms the first and second adhesive layers, and can also be composed of (meth)acrylic, rubber, urethane, It consists of an adhesive composition (hereinafter, also referred to as "third adhesive composition") containing resins such as ester-based, polysiloxane-based, and polyvinyl ether-based resins as the main component. The third adhesive composition is preferably an adhesive composition using a (meth)acrylic resin excellent in transparency, weather resistance, heat resistance, and the like as a matrix polymer. The third adhesive composition may be an active energy ray curable type or a thermosetting type. The thickness of the adhesive layer is usually 0.1 μm or more and 150 μm or less, for example, 3 μm or more and 60 μm or less. From the viewpoint of thinning, it is preferably 30 μm or less, more preferably 20 μm or less. The thickness of the adhesive layer may be, for example, 10 μm or more, but in terms of thinner shape, it is 15 μm or less, preferably 10 μm or less, and particularly preferably 7 μm or less.
[透濕度] [moisture permeability]
第2偏光板200中,由第2黏著劑層14、功能層15及第1黏著劑層13所構成之積層體的透濕度為180g/(m2‧day)以上1500g/(m2‧day)以下。
In the second
在偏光片之一側僅隔著接著劑層而積層有保護膜,並在另一側直接從偏光片側起依序積層有第2黏著劑層、功能層及第1黏著劑層之附黏著劑層的偏光板,係由於即使具有第2黏著劑層及功能層,仍會有貼合於無機玻璃面後的耐濕熱性差之傾向,故在偏光片之端部碘會脫離,而有容易產生所謂碘脫離之傾向。第2偏光板200係藉由使由第2黏著劑層14、功能層15及第1黏著劑層13所構成之積層體(以下,為了精簡化,亦簡稱為「積層體」)之透濕度為1500g/(m2‧day)以下,有容易抑制碘脫離之傾向。
A protective film is laminated on one side of the polarizer with only an adhesive layer interposed therebetween, and a second adhesive layer, a functional layer and a first adhesive layer are laminated on the other side directly from the polarizer side. Even if the polarizing plate with the second adhesive layer and the functional layer has a second adhesive layer and a functional layer, it still has a tendency to be poor in heat and humidity resistance after being attached to the surface of the inorganic glass. Therefore, the iodine will be separated from the end of the polarizer, and it is easy to generate The so-called iodine from the tendency. The second
又,第2偏光板200雖然具有功能層,但構成功能層之液晶硬化層及貼合層係厚度比較薄。因相較於黏著劑層,第2偏光板具備之保護膜較為剛
直,故第2偏光板200具備功能層時,相較於兩面具有保護膜之偏光板,有容易產生捲曲之傾向。第2偏光板200係藉由使由第2黏著劑層14、功能層15及第1黏著劑層13所構成的積層體之透濕度為180g/(m2‧day)以上,而有容易以比較短的時間解決捲曲之傾向。
Moreover, although the 2nd
從碘脫離之抑制及捲曲解決時間縮短之觀點而言,積層體之透濕度較佳係220g/(m2‧day)以上800g/(m2‧day)以下,更佳係240g/(m2‧day)以上700g/(m2‧day)以下,再更佳係250g/(m2‧day)以上600g/(m2‧day)以下。 From the viewpoints of suppressing iodine detachment and shortening the curling resolution time, the moisture permeability of the laminate is preferably 220 g/(m 2 ·day) or more and 800 g/(m 2 ·day) or less, more preferably 240 g/(m 2 ). ‧day) or more and 700 g/(m 2 ‧day) or less, more preferably 250 g/(m 2 ‧day) or more and 600 g/(m 2 ‧day) or less.
積層體之透濕度例如可藉由第1黏著劑層13及第2黏著劑層14之透濕度之調節而調節成上述範圍內。
The moisture permeability of the layered product can be adjusted within the above-mentioned range by adjusting the moisture permeability of the first
[附黏著劑層的偏光板之製造方法] [Manufacturing method of polarizing plate with adhesive layer]
第1偏光板100例如可如下列方式進行製造。首先,使偏光片10與保護膜11隔著接著劑層12而積層。關於偏光板,可準備長條狀之構件,以卷至卷貼合各別之構件後,裁切成預定形狀而進行製造;亦可將各別之構件裁切成預定之形狀後,貼合。可在偏光片10貼合保護膜1之後,設有加熱步驟或調濕步驟。在此之後,使形成於剝離膜上之第1黏著劑層13積層於偏光片10上。
The first
第2偏光板200例如可如下列方式進行製造。首先,使偏光片10與保護膜11隔著接著劑層12而積層。關於偏光板,可準備長條狀之構件,以卷至卷貼合各別之構件後,裁切成預定形狀而進行製造;亦可將各別之構件裁切成預定之形狀後,貼合。可在偏光片10貼合保護膜1之後,設有加熱步驟或調濕步驟。
The second
功能層15為相位差層時,例如,可如下列方式進行製造。在基材上形成定向膜,並在定向膜上塗敷包含聚合性液晶化合物之塗敷液。在使聚合性
液晶化合物定向之狀態,照射活性能量線,並使聚合性液晶化合物硬化。在聚合性液晶化合物經硬化而成之層上,積層已形成於剝離膜上之第1黏著劑層13。然後,剝離基材及/或定向膜。然後,在偏光片10上積層已形成於剝離膜上之第2黏著劑層14。關於相位差層,可準備長條狀之構件,以卷至卷貼合各別之構件後,裁切成預定形狀而進行製造;亦可將各別之構件裁切成預定之形狀後,貼合。
When the
接著,可藉由剝離被積層於第2黏著劑層14上之剝離膜,並隔著第2黏著劑層14而貼合功能層15與偏光片10,以製作第2偏光板200。
Next, the second
<圖像顯示裝置> <Image Display Device>
第1偏光板100及第2偏光板200係可配置於圖像顯示面板之前表面(辨識側),而使用來作為圖像顯示裝置之構成要件。屬於圓偏光板之附黏著劑層的偏光板係亦可在圖像顯示裝置中使用來作為賦予抗反射功能之抗反射用偏光板。圖像顯示裝置並無特別限定,例如可列舉有機電致發光(有機EL)顯示裝置、無機電致發光(無機EL)顯示裝置、液晶顯示裝置、電場發光顯示裝置等圖像顯示裝置。
The first
[可撓性圖像顯示裝置] [Flexible Image Display Device]
圖像顯示裝置可為可撓性圖像顯示裝置。可撓性圖像顯示裝置係由後述之可撓性圖像顯示裝置用積層體、及有機EL顯示面板所構成,其中,相對於有機EL顯示面板在辨識側配置可撓性圖像顯示裝置用積層體,並可彎折地構成。 The image display device may be a flexible image display device. The flexible image display device is composed of a laminate for a flexible image display device, which will be described later, and an organic EL display panel, wherein the flexible image display device is disposed on the recognition side with respect to the organic EL display panel. The laminated body can be bent.
<可撓性圖像顯示裝置用積層體> <Laminated body for flexible image display device>
可撓性圖像顯示裝置用積層體係具備本發明之附黏著劑層的偏光板、及前面板或觸控感測器。本發明之附黏著劑層的偏光板、前面板及觸控感測器之積層順序例如可從辨識側起依序為前面板、本發明之附黏著劑層的偏光板、觸控感測 器。積層順序較佳係前面板、觸控感測器、本發明之附黏著劑層的偏光板之順序。若偏光板存在於比觸控感測器更靠近辨識側,則觸控感測器之圖型難以被辨識,且顯示圖像之辨識性會變佳,故為較佳。各別之構件係可使用接著劑、黏著劑等而進行積層。又,可撓性圖像顯示裝置用積層體可具備形成於前面板、偏光板、觸控感測器之任一層的至少一面之遮光圖型。 The laminated system for flexible image display devices is provided with the polarizing plate with the adhesive layer of this invention, and a front panel or a touch sensor. The order of lamination of the polarizing plate with the adhesive layer of the present invention, the front panel, and the touch sensor can be, for example, the front panel, the polarizing plate with the adhesive layer of the present invention, and the touch sensor in order from the identification side. device. The stacking sequence is preferably the sequence of the front panel, the touch sensor, and the polarizing plate with the adhesive layer of the present invention. If the polarizing plate is present on the recognition side than the touch sensor, the pattern of the touch sensor is difficult to be recognized, and the recognition of the displayed image will be improved, so it is better. The respective member systems can be laminated using an adhesive, an adhesive, or the like. Moreover, the laminated body for flexible image display apparatuses may be equipped with the light-shielding pattern formed in the at least one surface of any one layer of a front panel, a polarizing plate, and a touch sensor.
[前面板] [front panel]
在偏光板之辨識側係可配置前面板。前面板係可隔著接著層而積層於偏光板。接著層例如可列舉前述之黏著劑層或接著劑層。 A front panel can be configured on the identification side of the polarizer. The front plate can be laminated on the polarizing plate via an adhesive layer. As the next layer, for example, the above-mentioned adhesive layer or adhesive layer can be exemplified.
前面板可列舉玻璃、在樹脂膜之至少一面包含硬塗層而成者等。玻璃例如可使用高穿透玻璃、或強化玻璃。尤其,使用薄的透明面材時,以經施予化學強化之玻璃為較佳。玻璃之厚度例如可設為100μm至5mm。 Examples of the front panel include glass, a resin film containing a hard coat layer on at least one surface thereof, and the like. As the glass, for example, high-transmission glass or tempered glass can be used. In particular, when a thin transparent surface material is used, chemically strengthened glass is preferred. The thickness of the glass can be set to, for example, 100 μm to 5 mm.
在樹脂膜之至少一面含有硬塗層而成之前面板係不會像既有之玻璃般地硬直,可具有可撓性的特性。硬塗層之厚度並無特別限定,例如可為5至100μm。 Before at least one side of the resin film contains a hard coat layer, the panel is not as rigid as the existing glass, and can have a flexible property. The thickness of the hard coat layer is not particularly limited, and may be, for example, 5 to 100 μm.
樹脂膜係可為由具有降莰烯或多環降莰烯系單體等包含環烯烴的單體之單元的環烯烴系衍生物、纖維素(二乙醯基纖維素、三乙醯基纖維素、乙醯基纖維素丁酸酯、異丁酯纖維素、丙醯基纖維素、丁醯基纖維素、乙醯基丙醯基纖維素)、乙烯-乙酸乙烯酯共聚物、聚環烯烴、聚酯、聚苯乙烯、聚醯胺、聚醚醯亞胺、聚丙烯酸、聚醯亞胺、聚醯胺醯亞胺、聚醚碸、聚碸、聚乙烯、聚丙烯、聚甲基戊烯、聚氯乙烯、聚偏二氯乙烯、聚乙烯醇、聚乙烯醇縮乙醛、聚醚酮、聚醚醚酮、聚醚碸、聚甲基丙烯酸甲酯、聚對苯二甲酸乙二酯、聚對苯二甲酸丁二酯、聚萘二甲酸乙二酯、聚碳酸酯、聚胺基甲酸酯、環氧等高分子所形 成的膜。樹脂膜係可使用未延伸、單軸或雙軸延伸膜。此等高分子係可分別單獨使用或混合2種以上而使用。樹脂膜較佳係透明性及耐熱性優異之聚醯胺醯亞胺膜或聚醯亞胺膜、單軸或雙軸延伸聚酯膜、透明性及耐熱性優異並且可對應膜之大型化的環烯烴系衍生物膜、聚甲基丙烯酸甲酯膜及透明性與光學上無異向性之三乙醯基纖維素及異丁酯纖維素膜。樹脂膜之厚度為5至200μm,較佳係可為20至100μm。 The resin film system may be a cycloolefin-based derivative, cellulose (diacetyl cellulose, triacetyl cellulose) having a unit of a monomer including a cycloolefin such as norbornene or a polycyclic norbornene-based monomer. cellulose, acetyl cellulose butyrate, isobutyl cellulose, propyl cellulose, butyl cellulose, acetyl propyl cellulose), ethylene-vinyl acetate copolymer, polycycloolefin, poly Ester, polystyrene, polyamide, polyetherimide, polyacrylic acid, polyimide, polyamideimide, polyetherimide, polyetherimide, polyethylene, polypropylene, polymethylpentene, Polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal, polyether ketone, polyether ether ketone, polyether dust, polymethyl methacrylate, polyethylene terephthalate, Polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyurethane, epoxy and other polymers formed film. As the resin film system, an unstretched, uniaxially or biaxially stretched film can be used. These macromolecular systems can be used individually or in mixture of 2 or more types, respectively. The resin film is preferably a polyimide film or a polyimide film, a uniaxially or biaxially stretched polyester film, which is excellent in transparency and heat resistance, and can cope with the enlargement of the film. Cycloolefin-based derivative films, polymethyl methacrylate films, and transparent and optically non-isotropic triacetyl cellulose and isobutyl cellulose films. The thickness of the resin film is 5 to 200 μm, preferably 20 to 100 μm.
[遮光圖型] [shading pattern]
遮光圖型(bezel)係形成於構成可撓性圖像顯示裝置用積層體的前面板、偏光板、觸控感測器之任一者之至少一面。例如,可形成於前面板之顯示元件側。遮光圖型係可隱藏顯示裝置之各配線以免被使用者辨識。遮光圖型之顏色、材質並無特別限制,可由具有黑色、白色、金色等之多樣的顏色之樹脂物質形成。在一實施型態中,遮光圖型之厚度可為2μm至50μm,較佳可為4μm至30μm,更佳可為6μm至15μm之範圍。又,為了抑制因遮光圖型與顯示部之間的高低差所造成的氣泡混入及境界部之辨識,可對遮光圖型賦予形狀。 A light-shielding pattern (bezel) is formed on at least one surface of any one of a front panel, a polarizing plate, and a touch sensor constituting a laminate for a flexible image display device. For example, it can be formed on the display element side of the front panel. The shading pattern can hide the wiring of the display device from being recognized by the user. The color and material of the shading pattern are not particularly limited, and can be formed of resin substances having various colors such as black, white, and gold. In one embodiment, the thickness of the shading pattern can be 2 μm to 50 μm, preferably 4 μm to 30 μm, and more preferably 6 μm to 15 μm. In addition, in order to suppress the mixing of air bubbles and the recognition of boundary portions due to the difference in height between the light-shielding pattern and the display portion, the light-shielding pattern may be given a shape.
[觸控感測器] [touch sensor]
觸控感測器係使用來作為輸入手段。觸控感測器已提出電阻膜方式、表面彈性波方式、紅外線方式、電磁感應方式、靜電容量方式等各式各樣者,可為任一方式。其中,以靜電容量方式為較佳。靜電容量方式觸控感測器係區分成活性區域及位於前述活性區域之外廓部的非活性區域。活性區域為對應於在顯示面板顯示畫面之區域(顯示部)的區域,且為可感測使用者之觸控的區域,非活性區域為對應於在顯示裝置不顯示畫面的區域(非顯示部)之區域。觸控感測器係可包含:具有可撓性的特性之基板;形成於前述基板之活性區域的感測圖型;及形成 於前述基板之非活性區域並用以使前述感測圖型經由墊(pad)部而與外部之驅動電路連接之各感測線。具有可撓性的特性之基板係可使用與前述前面板之透明基板為相同之材料。從抑制在觸控感測器會產生的龜裂之觀點而言,觸控感測器之基板較佳係靭性為2,000MPa%以上者。更佳係靭性為2,000MPa%至30,000MPa%。在此,靭性係定義為在經由高分子材料之拉伸試驗所得到之應力(MPa)-應變(%)曲線(Stress-Strain Curve)中,直至破壞點為止之曲線的下部面積。 Touch sensors are used as input means. Various types of touch sensors have been proposed, such as a resistive film method, a surface elastic wave method, an infrared method, an electromagnetic induction method, and an electrostatic capacitance method, and any method may be used. Among them, the electrostatic capacitance method is preferable. The capacitive touch sensor is divided into an active area and an inactive area located outside the active area. The active area is the area corresponding to the area where the screen is displayed on the display panel (the display part), and is the area that can sense the touch of the user, and the inactive area is the area corresponding to the area where the image is not displayed on the display device (the non-display part). ) area. The touch sensor may include: a substrate having flexibility; a sensing pattern formed on an active area of the substrate; and forming Each sensing line is used to connect the sensing pattern to the external driving circuit through the pad part in the inactive area of the substrate. The substrate with flexibility can use the same material as the transparent substrate of the front panel. From the viewpoint of suppressing cracks that may occur in the touch sensor, the substrate of the touch sensor preferably has a toughness of 2,000 MPa% or more. More preferably, the toughness is 2,000 MPa% to 30,000 MPa%. Here, toughness is defined as the lower area of the curve up to the point of failure in the stress (MPa)-strain (%) curve (Stress-Strain Curve) obtained by the tensile test of the polymer material.
[實施例] [Example]
以下,藉由實施例更詳細地說明本發明。例中之「%」及「份」係只要無特別言及,即為質量%及質量份。 Hereinafter, the present invention will be described in more detail by way of examples. "%" and "part" in the example are mass % and mass part unless otherwise specified.
[透濕度] [moisture permeability]
試驗材料: experiment material:
將在透濕度超過70000g/(m2‧day)之支撐體(層狀)的面上單獨貼合第1黏著劑層(實施例1、比較例1及2)、或貼合第2黏著劑層、功能層與第1黏著劑層之積層體(實施例2及比較例3)而成者,作為試驗材料。 The first adhesive layer (Example 1, Comparative Examples 1 and 2) or the second adhesive will be pasted alone on the surface of the support (layered) with a moisture permeability exceeding 70000g/(m 2 ·day) Layers, functional layers, and laminates of the first adhesive layer (Example 2 and Comparative Example 3) were used as test materials.
透濕度之測定方法: Determination method of moisture permeability:
使用水蒸氣穿透度計〔Systech Illinois公司(英國)製「Lyssy80-4000」,依據JIS K7129-1:2019(感濕感測器法)〕,在測定面積0.07至51cm2、穿透格室(cell)之溫度40℃、高濕度腔室之相對濕度90%RH之條件下,將低濕度腔室側之測定起始閾值設定為相對濕度9.7%RH而開始測定,並測定低濕度腔室之相對濕度從9.9%RH變化至10.1%RH所需的時間,以水蒸氣穿透度之形式算出透濕度。 Using a water vapor penetrometer ["Lyssy80-4000" manufactured by Systech Illinois (UK), based on JIS K7129-1:2019 (humidity sensor method)], the measurement area is 0.07 to 51 cm 2 , and the penetration cell is (cell) temperature of 40°C and relative humidity of 90% RH in the high humidity chamber, start the measurement by setting the measurement start threshold on the side of the low humidity chamber to 9.7% RH relative humidity, and measure the low humidity chamber The time required for the relative humidity to change from 9.9% RH to 10.1% RH was calculated in the form of water vapor permeability.
[碘脫離之評估] [Assessment of iodine detachment]
如圖3所示,在以保護膜A面(A面)作為上側時,以偏光片之吸收軸T對長邊L2之角度α成為45°之方式,將附黏著劑層的偏光板裁切成120mm(L2)×60mm(L1)之大小的長方形,並貼合於無鹼玻璃板〔CORNING公司製,商品名「Eagle-XG」〕後,放置在溫度65℃、濕度90%RH之環境下168小時。其後,在與經試驗之附黏著劑層的偏光板為相反側之無鹼玻璃面貼合會成為正交偏光板之關係的偏光板,以光學顯微鏡進行觀察,保存觀察圖像。光學顯微鏡係使用Keyence股份有限公司製之「VHX-500」。在圖4中,對於附黏著劑層的偏光板,表示以如此方式所觀察之光學顯微鏡之觀察圖像的一例。該觀察圖像係藉由後述之實施例1獲得之附黏著劑層的偏光板之觀察圖像。 As shown in FIG. 3 , when the protective film A surface (A surface) is taken as the upper side, the polarizing plate with the adhesive layer is cut so that the angle α between the absorption axis T of the polarizing plate and the long side L2 becomes 45° After forming a rectangle with a size of 120mm (L2) × 60mm (L1), and pasting it on an alkali-free glass plate (manufactured by CORNING Co., Ltd., trade name "Eagle-XG"), it is placed in an environment with a temperature of 65°C and a humidity of 90%RH. next 168 hours. Then, the polarizing plate which becomes the relationship of a crossed polarizing plate is bonded to the alkali-free glass surface on the opposite side of the polarizing plate with the tested adhesive layer, and it observes with an optical microscope, and preserve|saves an observation image. As an optical microscope, "VHX-500" manufactured by Keyence Co., Ltd. was used. In FIG. 4, an example of the observation image of the optical microscope observed in this way is shown about the polarizing plate with an adhesive bond layer. This observation image is an observation image of the polarizing plate with the adhesive layer obtained in Example 1 described later.
在該圖4中,若從附黏著劑層的偏光板之端部50朝內側方向沿著以箭號所示之直線(從端部50於垂直方向以白色描繪之直線)進行觀察,可知有碘脫離區域51與不產生碘脫離之區域(非碘脫離區域)52。
In FIG. 4 , when viewed from the
[以圖像處理所進行之碘脫離量的測定] [Measurement of iodine desorption amount by image processing]
圖4所示之顯微鏡的觀察圖像係使用圖像分析軟體「Image J(免費軟體)」轉換成黑白256色階(0至255)之灰色圖像。轉換成黑白256色階(0至255)之方法係使用使RGB值進行平均化之方法。圖5係表示對於圖4所示之轉換成黑白256色階後之觀察圖像,沿著以白色描繪之直線而將色階作圖(plot)後所得之曲線圖(profile)數據。相對於附黏著劑層的偏光板之端部50將在垂直方向(圖4中箭號)之色階曲線圖中的碘脫離區域51與非碘脫離區域52之中間點(碘脫離階度(gradation)之中間)作為附黏著劑層的偏光板之碘脫離端部(圖5),測定從附黏著劑層的偏光板之端部50至碘脫離端部之距離(μm)作為碘脫離距離。將附黏著劑
層的偏光板之碘脫離距離表示於表1中。碘脫離距離愈小,則碘脫離範圍愈窄,耐濕熱性愈優異。
The observed image of the microscope shown in FIG. 4 was converted into a gray image of black and white 256 levels (0 to 255) using the image analysis software "Image J (free software)". The method of converting to black and white 256 levels (0 to 255) uses a method of averaging RGB values. FIG. 5 shows profile data obtained by plotting the color levels along a straight line drawn in white with respect to the observed image shown in FIG. 4 after conversion to black and white 256 levels. The
[捲曲測定] [Curl Measurement]
準備藤森工業股份有限公司製之AY-638(由厚度為38μm之聚酯膜與該聚酯膜上之厚度為15μm之黏著劑層所構成)作為防護膜。 AY-638 (consisting of a polyester film having a thickness of 38 μm and an adhesive layer having a thickness of 15 μm on the polyester film) manufactured by Fujimori Kogyo Co., Ltd. was prepared as a protective film.
在附黏著劑層的偏光板之保護膜A上貼合防護膜並製作附防護膜之偏光板。以附防護膜之偏光板的偏光片之吸收軸相對於長邊成為45°之方式裁切成120mm×60mm之大小的長方形而得到捲曲測定用試樣,將該捲曲測定用試樣在23℃/55%RH之環境下放置15小時。 A protective film is attached to the protective film A of the polarizing plate with the adhesive layer, and a polarizing plate with a protective film is produced. The polarizer of the polarizing plate with the protective film was cut into a rectangle with a size of 120 mm × 60 mm so that the absorption axis of the polarizer of the polarizing plate with a protective film was 45° with respect to the long side to obtain a sample for curl measurement. The sample for curl measurement was heated at 23°C. /55%RH environment for 15 hours.
在此之後,從捲曲測定用試樣之第1黏著劑層上剝離分離膜,進行捲曲測定。將該試樣放置在23℃/15%RH之環境下1小時後,再度進行捲曲測定,算出捲曲值之變化量。 Then, the separation film was peeled off from the 1st adhesive bond layer of the sample for curl measurement, and the curl measurement was performed. After the sample was left in an environment of 23° C./15% RH for 1 hour, the curl measurement was performed again, and the amount of change in the curl value was calculated.
一邊參照圖6,一邊說明有關捲曲測定。捲曲測定係在基準面25(例如,桌上之平面等),以使其凸面(防護膜側)為下方而放置經捲曲之附黏著劑層的偏光板之試樣21。在圖6中係將假設試樣無捲曲時之面,以四角形ABCD所示之假想面23顯示。以在假想面23中之四角之中的一角A在經捲曲之附黏著劑層的偏光板之試樣21中係位於A1之位置,另一角C在經捲曲之附黏著劑層的偏光板之試樣21中係位於C1之位置,又另外的角B及D在經捲曲之偏光板的試樣21中係位於B1及D1之位置,B1與B為相同的位置,D1與D亦為相同的位置之方式顯示(亦即,相當於試樣之四角之中的B與D無浮起之狀態)。但,實際上亦有時試樣之四角之中三個浮起、或四角全部浮起。如此方式,對於
試樣之四角A1、B1、C1、D1分別測定離基準面25之捲曲高度H。決定此等四角之浮起高度之中的最大值,以該最大值作為該試樣之捲曲值。
The curl measurement will be described with reference to FIG. 6 . The curling measurement is performed on a reference surface 25 (eg, a flat surface on a table), and the
[單面保護偏光板] [Single-sided protection polarizer]
(偏光片之製作) (Production of polarizer)
將厚度20μm、聚合度2400、皂化度99%以上之聚乙烯醇膜在熱輥上單軸延伸成延伸倍率4.1倍,在維持緊繃狀態下,在28℃下浸漬在每100質量份的水含有碘0.05質量份及碘化鉀5質量份之染色浴中60秒鐘。 The polyvinyl alcohol film with a thickness of 20 μm, a degree of polymerization of 2400, and a degree of saponification of 99% or more was uniaxially stretched on a hot roll to a stretch ratio of 4.1 times, and immersed in water per 100 parts by mass at 28°C while maintaining the tension. In a dyeing bath containing 0.05 parts by mass of iodine and 5 parts by mass of potassium iodide for 60 seconds.
然後,在64℃下浸漬在每100質量份的水含有硼酸5.5質量份及碘化鉀15質量份之硼酸水溶液1中110秒鐘。然後,在67℃下浸漬在每100質量份的水含有硼酸5.5質量份及碘化鉀15質量份之硼酸水溶液2中30秒鐘。在此之後,使用10℃之純水進行水洗,並乾燥,而獲得偏光片。所得到之偏光片之厚度為8μm,硼含量為4.3重量%。 Then, it was immersed in the boric acid aqueous solution 1 containing 5.5 mass parts of boric acid and 15 mass parts of potassium iodide per 100 mass parts of water at 64 degreeC for 110 seconds. Then, it was immersed in the boric acid aqueous solution 2 containing 5.5 mass parts of boric acid and 15 mass parts of potassium iodide per 100 mass parts of water at 67 degreeC for 30 second. After that, it was washed with pure water at 10° C. and dried to obtain a polarizer. The obtained polarizer had a thickness of 8 μm and a boron content of 4.3% by weight.
(水系接著劑之調製) (Preparation of water-based adhesive)
相對於水100質量份,溶解羧基改質聚乙烯醇(KURARAY股份有限公司,商品名「KL-318」)3質量份,在該水溶液中添加屬於水溶性環氧樹脂之聚醯胺環氧系添加劑(田岡化學工業股份有限公司,商品名「SUMIREZ RESIN(註冊商標)650(30)」,固體成分濃度30重量%之水溶液)1.5質量份,而調製水系接著劑。 With respect to 100 parts by mass of water, 3 parts by mass of carboxyl group-modified polyvinyl alcohol (KURARAY Co., Ltd., trade name "KL-318") was dissolved, and a polyamide epoxy-based water-soluble epoxy resin was added to the aqueous solution. Additives (Taoka Chemical Industry Co., Ltd., trade name "SUMIREZ RESIN (registered trademark) 650 (30)", an aqueous solution with a solid content concentration of 30% by weight) 1.5 parts by mass were prepared to prepare a water-based adhesive.
(保護膜A及剝離膜B) (Protective film A and release film B)
使用在厚度25μm之由環狀聚烯烴系樹脂所構成的延伸膜形成有厚度3μm之硬塗層的膜(日本製紙股份有限公司製,商品名「COP25ST-HC」)作為保護膜A。 As the protective film A, a film (manufactured by Nippon Paper Co., Ltd., trade name "COP25ST-HC") in which a hard coat layer with a thickness of 3 μm was formed on a stretched film made of a cyclic polyolefin-based resin with a thickness of 25 μm was used.
使用三乙醯基纖維素膜(富士FILM股份有限公司製,「TD80UL」)作為剝離膜B。剝離膜之厚度為80μm,透濕度為502g/m2‧24HR。 As the release film B, a triacetate-based cellulose film (manufactured by Fuji Film Co., Ltd., "TD80UL") was used. The thickness of the release film is 80 μm, and the moisture permeability is 502 g/m 2 ·24HR.
(單面保護偏光板之製作) (Production of single-sided protective polarizer)
將所製作之偏光片連續地輸送並從保護膜A之卷連續地捲出保護膜A,又,從剝離膜B之卷連續地捲出剝離膜B。在偏光片與經電暈處理之保護膜A之間注入水系接著劑,並在偏光片與剝離膜B之間注入純水,通過貼合輥,而獲得由保護膜A/水系接著劑/偏光片/純水/剝離膜B所構成的積層膜。輸送積層膜,在乾燥爐進行80℃、300秒之加熱處理,藉此使水系接著劑乾燥,並使中介於偏光片與剝離膜B之間的純水揮發去除,而獲得附剝離膜之單面保護偏光板。從附剝離膜之單面保護偏光板剝離剝離膜B,獲得單面保護偏光板。 The produced polarizer is continuously conveyed, the protective film A is continuously unwound from the roll of the protective film A, and the release film B is continuously unwound from the roll of the release film B. A water-based adhesive was injected between the polarizer and the corona-treated protective film A, and pure water was injected between the polarizer and the release film B, and passed through a laminating roller to obtain a protective film A/water-based adhesive/polarized light Laminated film composed of sheet/pure water/release film B. The laminated film was transported and heated at 80°C for 300 seconds in a drying oven, thereby drying the water-based adhesive, and volatilizing and removing the pure water between the polarizer and the release film B to obtain a sheet with a release film face protection polarizer. The peeling film B was peeled off from the single-sided protective polarizing plate with the peeling film to obtain a single-sided protective polarizing plate.
[相位差積層體之製作] [Production of retardation layered body]
(第1相位差層之製作) (Fabrication of the first retardation layer)
使用由向列型液晶化合物經硬化而成之層的第1液晶層、定向膜、及透明基材所構成的會賦予λ/4之相位差的層,作為第1相位差層。又,向列型液晶化合物經硬化而成之層、定向層之合計的厚度為2μm。 As a 1st retardation layer, the 1st liquid crystal layer, the alignment film, and the layer which provided the retardation of λ/4 which consists of the hardened layer of a nematic liquid crystal compound, and a transparent base material were used. In addition, the total thickness of the layer formed by curing the nematic liquid crystal compound and the alignment layer was 2 μm.
(第2相位差層之製作) (Fabrication of the second retardation layer)
使聚乙二醇二(甲基)丙烯酸酯(新中村化學工業股份有限公司製,A-600)10.0質量份、三羥甲基丙烷三丙烯酸酯(新中村化學工業股份有限公司製,A-TMPT)10.0質量份、1,6-己二醇二(甲基)丙烯酸酯(新中村化學工業股份有限公司製,A-HD-N)10.0質量份、及作為光聚合起始劑之IRGACURE 907(BASF公司製,Irg-907)1.50質量份溶解於溶劑甲基乙基酮70.0質量份中,調製定向層形成用塗敷液作為定向層形成用之組成物。 10.0 parts by mass of polyethylene glycol di(meth)acrylate (manufactured by Shin-Nakamura Chemical Industry Co., Ltd., A-600), trimethylolpropane triacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., A- TMPT) 10.0 parts by mass, 1,6-hexanediol di(meth)acrylate (manufactured by Shin-Nakamura Chemical Industry Co., Ltd., A-HD-N) 10.0 parts by mass, and IRGACURE 907 as a photopolymerization initiator (BASF Corporation make, Irg-907) 1.50 mass parts was melt|dissolved in 70.0 mass parts of solvent methyl ethyl ketones, and the coating liquid for alignment layer formation was prepared as the composition for alignment layer formation.
準備厚度20μm之長條狀之環狀聚烯烴系樹脂(COP)膜(日本ZEON股份有限公司製)作為基材膜,在基材膜之單面以桿塗佈機塗佈定向層形成用塗敷液。 An elongated cyclic polyolefin-based resin (COP) film with a thickness of 20 μm (manufactured by ZEON Co., Ltd.) was prepared as a base film, and a coating for forming an alignment layer was applied on one side of the base film with a rod coater. compress.
對塗敷後之塗佈層在溫度80℃下施予60秒鐘之熱處理後,以220mJ/cm2照射紫外線(UVB),使定向層形成用之組成物聚合,並使其硬化,在基材膜上形成厚度2.3μm之定向層。 The coated layer was subjected to a heat treatment at a temperature of 80° C. for 60 seconds, and then irradiated with ultraviolet rays (UVB) at 220 mJ/cm 2 to polymerize and harden the composition for forming an alignment layer. An orientation layer with a thickness of 2.3 μm is formed on the material film.
使光聚合性向列型液晶化合物(MERCK公司製,RMM28B)20.0質量份、及作為光聚合起始劑之IRGACURE 907(BASF公司製,Irg-907)1.0質量份溶解於溶劑丙二醇單甲基醚乙酸酯80.0質量份中,調製相位差層形成用塗敷液作為相位差層形成用之組成物。 20.0 parts by mass of a photopolymerizable nematic liquid crystal compound (manufactured by MERCK, RMM28B) and 1.0 part by mass of IRGACURE 907 (manufactured by BASF, Irg-907) as a photopolymerization initiator were dissolved in a solvent, propylene glycol monomethyl ether ethyl In 80.0 parts by mass of the acid ester, the coating liquid for forming a retardation layer was prepared as a composition for forming a retardation layer.
在先前所得到之定向層上塗佈相位差層形成用塗敷液,對塗佈層在溫度80℃下施予60秒鐘之熱處理。在此之後,以220mJ/cm2照射紫外線(UVB),使相位差層形成用之組成物聚合,並使其硬化,在定向層上形成厚度0.7μm之第2液晶硬化層。如此方式在基材膜上獲得由定向層與第2液晶硬化層所構成的厚度3μm之第2相位差層。 The coating liquid for retardation layer formation was apply|coated to the alignment layer obtained previously, and the heat treatment at the temperature of 80 degreeC for 60 second was given to the coating layer. After that, ultraviolet rays (UVB) were irradiated at 220 mJ/cm 2 to polymerize and harden the composition for forming a retardation layer, and a second liquid crystal cured layer with a thickness of 0.7 μm was formed on the alignment layer. In this way, the 2nd retardation layer of thickness 3 micrometers which consists of an alignment layer and a 2nd liquid crystal cured layer was obtained on the base film.
(相位差積層體之製作) (Fabrication of retardation laminated body)
藉由紫外線硬化型接著劑(厚度1μm),以各別之液晶層面(與基材膜為相反側之面)成為貼合面之方式,貼合第1相位差層與第2相位差層。然後,照射紫外線而使紫外線硬化型接著劑硬化,製作包含第1相位差層與第2相位差層之2層的相位差層之相位差積層體。包含第1相位差層、紫外線硬化型接著劑層、及第2相位差層之相位差積層體的厚度為6μm。 The 1st retardation layer and the 2nd retardation layer were bonded together with an ultraviolet curable adhesive (thickness 1 micrometer) so that each liquid crystal layer (surface on the opposite side to the base film) became a bonding surface. Then, ultraviolet rays are irradiated to harden the ultraviolet curable adhesive, and a retardation layered body including two retardation layers of the first retardation layer and the second retardation layer is produced. The thickness of the retardation layered body including the first retardation layer, the ultraviolet curable adhesive layer, and the second retardation layer was 6 μm.
(第1黏著劑層) (1st adhesive layer)
黏著劑層(1):準備透濕度930g/(m2‧day)、厚度25μm者。 Adhesive layer (1): A moisture vapor transmission rate of 930 g/(m 2 ·day) and a thickness of 25 μm were prepared.
黏著劑層(2):準備透濕度2000g/(m2‧day)、厚度25μm者。 Adhesive layer (2): A moisture vapor transmission rate of 2000 g/(m 2 ·day) and a thickness of 25 μm were prepared.
黏著劑層(3):準備透濕度160g/(m2‧day)、厚度25μm者。 Adhesive layer (3): A moisture permeability of 160 g/(m 2 ·day) and a thickness of 25 μm were prepared.
(第2黏著劑層) (2nd adhesive layer)
準備透濕度4000g/(m2‧day)、厚度5μm者。 Prepare those with a moisture permeability of 4000g/(m 2 ·day) and a thickness of 5μm.
<實施例1> <Example 1>
在所製作之單面保護偏光板之偏光片側貼合黏著劑層(1),剝離分離片而獲得實施例1之附黏著劑層的偏光板。實施例1之附黏著劑層的偏光板係具有如圖1所示之構成。將結果表示於表1中。透濕度係對於黏著劑層單獨進行測定。 The adhesive layer (1) was attached to the polarizer side of the produced single-sided protective polarizing plate, and the separator was peeled off to obtain the polarizing plate with the adhesive layer of Example 1. The polarizing plate with the adhesive layer of Example 1 has the structure shown in FIG. 1 . The results are shown in Table 1. The moisture permeability is measured independently of the adhesive layer.
<比較例1> <Comparative Example 1>
除了在實施例1中使用黏著劑層(2)取代黏著劑層(1)以外,其餘係與實施例1同樣方式而製作附黏著劑層的偏光板。將結果表示於表1中。透濕度係對於黏著劑層單獨進行測定。 Except having used the adhesive layer (2) instead of the adhesive layer (1) in Example 1, it carried out similarly to Example 1, and produced the polarizing plate with an adhesive layer. The results are shown in Table 1. The moisture permeability is measured independently of the adhesive layer.
<比較例2> <Comparative Example 2>
除了在實施例1中使用黏著劑層(3)取代黏著劑層(1)以外,其餘係與實施例1同樣方式而製作附黏著劑層的偏光板。將結果表示於表1中。透濕度係對於黏著劑層單獨進行測定。 Except having used the adhesive layer (3) instead of the adhesive layer (1) in Example 1, it carried out similarly to Example 1, and produced the polarizing plate with an adhesive layer. The results are shown in Table 1. The moisture permeability is measured independently of the adhesive layer.
[表1]
<實施例2> <Example 2>
在所製作之單面保護偏光板之偏光片側貼合第2黏著劑層,剝離分離片。將第2黏著劑層之已剝離分離片的面、與經去除透明基材之相位差積層體之第1液晶硬化層側貼合,剝離第2相位差層之基材膜。在經剝離基材膜之面貼合黏著劑層(1)。實施例2之附黏著劑層的偏光板係具有如圖2所示之構成。將結果表示於表2中。透濕度係對於第2黏著劑層、功能層與第1黏著劑層之積層體進行測定。 The second adhesive layer was pasted on the polarizer side of the produced single-sided protective polarizer, and the separator was peeled off. The surface of the 2nd pressure-sensitive adhesive layer from which the separator was peeled was bonded to the side of the 1st liquid crystal cured layer of the retardation layered product from which the transparent base material was removed, and the base film of the 2nd retardation layer was peeled off. The adhesive layer (1) is attached to the surface of the peeled base film. The polarizing plate with the adhesive layer of Example 2 has the structure shown in FIG. 2 . The results are shown in Table 2. The water vapor transmission rate was measured about the laminated body of a 2nd adhesive bond layer, a functional layer, and a 1st adhesive bond layer.
<比較例3> <Comparative Example 3>
除了在實施例2中使用黏著劑層(3)取代黏著劑層(1)以外,其餘係與實施例2同樣方式而製作附黏著劑層的偏光板。將結果表示於表2中。透濕度係對於貼合有黏著劑層與功能層之積層體者進行測定。 Except having used the adhesive layer (3) instead of the adhesive layer (1) in Example 2, it carried out similarly to Example 2, and produced the polarizing plate with an adhesive layer. The results are shown in Table 2. The water vapor transmission rate was measured for the laminate in which the adhesive layer and the functional layer were bonded together.
[表2]
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020-115807 | 2020-07-03 | ||
JP2020115807A JP2022013326A (en) | 2020-07-03 | 2020-07-03 | Polarizing plate with adhesive layer |
Publications (1)
Publication Number | Publication Date |
---|---|
TW202212142A true TW202212142A (en) | 2022-04-01 |
Family
ID=79315188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW110118264A TW202212142A (en) | 2020-07-03 | 2021-05-20 | Polarizing plate with pressure-sensitive adhesive layer |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2022013326A (en) |
KR (1) | KR20230031358A (en) |
CN (1) | CN115917383A (en) |
TW (1) | TW202212142A (en) |
WO (1) | WO2022004137A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024005148A1 (en) * | 2022-06-30 | 2024-01-04 | ニッタ株式会社 | Window material and light-transmissive roof material |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012247574A (en) | 2011-05-26 | 2012-12-13 | Nitto Denko Corp | Adhesion type polarizing plate and image display device |
JP6852967B2 (en) * | 2015-09-16 | 2021-03-31 | 日東電工株式会社 | Polarizing film with adhesive layer, optical members, and image display device |
JP6940930B2 (en) * | 2016-05-10 | 2021-09-29 | 日東電工株式会社 | Optical film for organic EL display device, polarizing film for organic EL display device, polarizing film with adhesive layer for organic EL display device, and organic EL display device |
JP6792382B2 (en) * | 2016-09-05 | 2020-11-25 | 日東電工株式会社 | Rubber-based pressure-sensitive adhesive composition, rubber-based pressure-sensitive adhesive layer, pressure-sensitive film, optical film with rubber-based pressure-sensitive adhesive layer, optical member, and image display device |
CN110799871B (en) * | 2017-06-28 | 2022-04-19 | 日东电工株式会社 | Polarizing plate |
JP2019159311A (en) * | 2018-03-12 | 2019-09-19 | 住友化学株式会社 | Polarizing plate and image display device using the same |
JP2020098317A (en) * | 2018-03-12 | 2020-06-25 | 住友化学株式会社 | Circular polarizing plate and image display device using the same |
KR20210071956A (en) * | 2018-10-02 | 2021-06-16 | 닛토덴코 가부시키가이샤 | Polarizer |
-
2020
- 2020-07-03 JP JP2020115807A patent/JP2022013326A/en active Pending
-
2021
- 2021-05-11 WO PCT/JP2021/017879 patent/WO2022004137A1/en active Application Filing
- 2021-05-11 KR KR1020237003770A patent/KR20230031358A/en active Search and Examination
- 2021-05-11 CN CN202180050968.3A patent/CN115917383A/en active Pending
- 2021-05-20 TW TW110118264A patent/TW202212142A/en unknown
Also Published As
Publication number | Publication date |
---|---|
JP2022013326A (en) | 2022-01-18 |
KR20230031358A (en) | 2023-03-07 |
CN115917383A (en) | 2023-04-04 |
WO2022004137A1 (en) | 2022-01-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI627478B (en) | Polarizing plate set and front-panel-integral type liquid crystal display panel | |
JP6100876B1 (en) | Protective film for polarizing plate | |
KR20150139542A (en) | Polarization plate set and liquid crystal display panel integrated with front plate | |
JP7469889B2 (en) | Optical laminate and method for manufacturing display device | |
KR20210091136A (en) | Optical laminate and image display device provided therewith | |
JP2020101815A (en) | Polarizing plate set | |
TWI806968B (en) | Laminated film | |
WO2021085000A1 (en) | Optical laminate and display device | |
KR20210122699A (en) | Polarizing plate and image display device using the polarizing plate | |
TW202212142A (en) | Polarizing plate with pressure-sensitive adhesive layer | |
JP7302999B2 (en) | Optical layered body and image display device using the optical layered body | |
TW201816435A (en) | Polarizing plate set and liquid crystal panel | |
TWI726116B (en) | Polarizing plate set and liquid crystal panel | |
JP7226473B2 (en) | A set of polarizers and a liquid crystal panel | |
TW202221071A (en) | Polarizing plate and display device | |
TW202136832A (en) | Laminate | |
TWI749232B (en) | Set of polarizing plate and liquid crystal panel | |
TW202110635A (en) | Optical layered body | |
WO2021200364A1 (en) | Multilayer body | |
WO2021200365A1 (en) | Laminated body | |
WO2021010100A1 (en) | Optical laminate | |
TW202231476A (en) | Method for manufacturing laminate with surface protection film and laminate | |
TW202232150A (en) | Laminated linear polarizing plate | |
JP2021162855A (en) | Laminate | |
JP2021162856A (en) | Laminate |