JP5410771B2 - 偏光子外面保護フィルム、偏光板及び液晶表示素子 - Google Patents
偏光子外面保護フィルム、偏光板及び液晶表示素子 Download PDFInfo
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- JP5410771B2 JP5410771B2 JP2009023113A JP2009023113A JP5410771B2 JP 5410771 B2 JP5410771 B2 JP 5410771B2 JP 2009023113 A JP2009023113 A JP 2009023113A JP 2009023113 A JP2009023113 A JP 2009023113A JP 5410771 B2 JP5410771 B2 JP 5410771B2
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- CTAPFRYPJLPFDF-UHFFFAOYSA-N isoxazole Chemical compound C=1C=NOC=1 CTAPFRYPJLPFDF-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- MPHUYCIKFIKENX-UHFFFAOYSA-N methyl 2-ethenylbenzoate Chemical compound COC(=O)C1=CC=CC=C1C=C MPHUYCIKFIKENX-UHFFFAOYSA-N 0.000 description 1
- AEBDJCUTXUYLDC-UHFFFAOYSA-N methyl 5-methylbicyclo[2.2.1]hept-2-ene-5-carboxylate Chemical compound C1C2C(C(=O)OC)(C)CC1C=C2 AEBDJCUTXUYLDC-UHFFFAOYSA-N 0.000 description 1
- RMAZRAQKPTXZNL-UHFFFAOYSA-N methyl bicyclo[2.2.1]hept-2-ene-5-carboxylate Chemical compound C1C2C(C(=O)OC)CC1C=C2 RMAZRAQKPTXZNL-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- KIHJKWNSLAKEPK-UHFFFAOYSA-N n-(2-methoxyethyl)prop-2-enamide Chemical class COCCNC(=O)C=C KIHJKWNSLAKEPK-UHFFFAOYSA-N 0.000 description 1
- ODXSZOIMGCUIEY-UHFFFAOYSA-N n-[hydroxy(methoxy)methyl]prop-2-enamide Chemical compound COC(O)NC(=O)C=C ODXSZOIMGCUIEY-UHFFFAOYSA-N 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 description 1
- 229920002006 poly(N-vinylimidazole) polymer Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical compound C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Images
Landscapes
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Laminated Bodies (AREA)
Description
液晶表示素子の外面側に配設される偏光子外面保護フィルムであって、
透明な合成樹脂製の基材層と、
この基材層の内面側に積層されるプライマー層と、
このプライマー層の内面側に積層される親水性樹脂層と
を備え、
上記プライマー層が、水系ラテックスから形成され、
上記水系ラテックスが、(メタ)アクリル酸、(メタ)アクリル酸誘導体、(メタ)アクリルアミド、(メタ)アクリルアミド誘導体、ビニルエステル類、オレフィン類、スチレン類、クロトン酸エステル類、イタコン酸エステル類、フマル酸エステル類、ビニルケトン類、ヘテロ環含有ビニルモノマー類及び不飽和ニトリル類からなる群から選択される1種単一の不飽和単量体から得られた重合体を含み、
上記基材層を構成する合成樹脂がアクリル系樹脂であることを特徴とする偏光子外面保護フィルムである。
メタクリル酸メチル/アクリル酸メチル共重合体(モル比9:1)100質量部、〔2−(2’−ヒドロキシ−3’,5’−ジ−t−ブチルフェニル)ベンゾトリアゾール〕1質量部、メチレンクロライド400質量部、及びメタノール100質量部を密閉容器に仕込み、加圧下、80℃で攪拌しながら溶解させてドープ組成物を得た。このドープ組成物をろ過し、冷却してから、エンドレスステンレスバンド上に均一に流延し、剥離が可能になるまで溶媒を蒸発させた後で、エンドレスステンレスバンドから剥離し、さらに乾燥させて膜厚30μmのアクリル系樹脂フィルム(基材層)を得た。このアクリル系樹脂フィルムを試料Aとする。
水系ラテックスとして、固形分30質量%のブチルアクリレート/t−ブチルアクリレート/スチレン/2−ヒドロキシエチルアクリレート共重合体の水分散ラテックス(質量比30/20/25/25)を用い、グラビアコーターにて、試料Aのアクリル系樹脂フィルムの面上に塗布し、乾燥させて厚み0.2μmのプライマー層を形成した。次いで、重合度が1500であるポリビニルアルコールとゼラチン(質量比1:1)を水に乳化させたエマルジョン(固形分濃度30質量%)を塗布し、乾燥させることによって親水性樹脂層を形成し、プライマー層及び親水性樹脂層の合計厚みが0.5μmである偏光子保護フィルムを得た。この偏光子保護フィルムを試料Bとする。
膜厚200μmのポリビニルアルコールフィルムを、一軸延伸(温度110℃、延伸倍率5倍)して、膜厚40μmのフィルムを得た。このフィルムを、ヨウ素0.15g及びヨウ化カリウム10gを含む水溶液に60秒間浸漬し、次いでヨウ化カリウム12g及びホウ酸7.5gを含む68℃の水溶液に浸漬した。これを水洗、乾燥し、偏光子を得た。
試料Bの偏光子保護フィルム及び上記偏光子を18cm×5cmのサイズに裁断し、固形分濃度が2質量%のポリビニルアルコール水溶液である接着剤を介して、これらを重ね合わせ、ハンドローラーを用いて過剰の接着剤や気泡を取り除きながら貼り合わせた。これを2kg/cm2に加圧したラミネーターに挿入し、さらに80℃で乾燥させることによって積層物1を得た。この貼合においては、試料Bの親水性樹脂層と上記偏光子が接着されるようにした。
試料Aのアクリル系樹脂フィルム及び上記偏光子を、上記実施例と同様の手段により貼り合わせて積層体2を得た。
積層体の二つの層を手で剥離し、材料破壊の発生の程度により、下記の三段階に評価した。
良好:材料破壊が起こる。
やや不良:一部材料破壊が起こるが、試料と偏光子の間の剥がれ面積が大きい。
不良:試料と偏光子の間が完全に剥がれる。
積層体を、75℃で90%RHの条件下に500時間放置し、外観変化を観察し、端部からの剥離の幅を測定した。評価基準は以下のとおりした。
良好:0.5mm以内
やや不良:0.5mm以上1.5mm以下
不良:1.5mm以上
2 透明な合成樹脂製の基材層
3 プライマー層
4 親水性樹脂層
5 偏光板
6 セルロースエステルからなる偏光子内面保護フィルム
7 偏光子
8 偏光板を製造するための装置
9 ニップ
10 ニップ
11 接着剤供給手段
12 ニップ
13 液晶表示素子
14 液晶セル
15 透明媒体層
16 液晶層
17 接着剤層
21 液晶表示素子
22 偏光板
23 偏光子保護フィルム
24 偏光子
25 液晶セル
26 透明媒体層
27 液晶層
28 接着剤層
Claims (8)
- 液晶表示素子の外面側に配設される偏光子外面保護フィルムであって、
透明な合成樹脂製の基材層と、
この基材層の内面側に積層されるプライマー層と、
このプライマー層の内面側に積層される親水性樹脂層と
を備え、
上記プライマー層が、水系ラテックスから形成され、
上記水系ラテックスが、(メタ)アクリル酸、(メタ)アクリル酸誘導体、(メタ)アクリルアミド、(メタ)アクリルアミド誘導体、ビニルエステル類、オレフィン類、スチレン類、クロトン酸エステル類、イタコン酸エステル類、フマル酸エステル類、ビニルケトン類、ヘテロ環含有ビニルモノマー類及び不飽和ニトリル類からなる群から選択される1種単一の不飽和単量体から得られた重合体を含み、
上記基材層を構成する合成樹脂がアクリル系樹脂であることを特徴とする偏光子外面保護フィルム。 - 上記親水性樹脂層を構成する親水性樹脂が、ビニルアルコール系重合体を含む請求項1に記載の偏光子外面保護フィルム。
- 上記ビニルアルコール系重合体が、ポリビニルアルコール、ポリビニルホルマール、ポリビニルアセタール、ポリビニルアルコールとオレフィン類との共重合体、ポリビニルアルコールと不飽和カルボン酸類との共重合体、ポリビニルアルコールと不飽和カルボン酸エステル類との共重合体、及びポリビニルアルコールとアクリルアミドとの共重合体からなる群から選択される少なくとも1種である請求項2に記載の偏光子外面保護フィルム。
- 上記親水性樹脂層が、プライマー層の内面に、水分散性ポリエステル系樹脂及び溶媒を含有する表面処理剤を接触させることで形成される請求項1に記載の偏光子外面保護フィルム。
- 上記プライマー層及び親水性樹脂層の合計厚みが、0.02μm以上4μm以下である請求項1から請求項4のいずれか1項に記載の偏光子外面保護フィルム。
- 上記基材層の外面側に積層される反射防止層又はハードコート層を備える請求項1から請求項5のいずれか1項に記載の偏光子外面保護フィルム。
- ポリビニルアルコールからなる偏光子と、
この偏光子の外面に積層される請求項1から請求項6のいずれか1項に記載の偏光子外面保護フィルムと、
偏光子の内面に積層される偏光子内面保護フィルムと
を備える偏光板。 - 液晶セルと、
この液晶セルの少なくとも一方の面側に積層される請求項7に記載の偏光板と
を備える液晶表示素子。
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TW099102507A TWI417582B (zh) | 2009-02-03 | 2010-01-29 | A polarizing element outer protective film, a polarizing plate, and a liquid crystal display element |
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