JP2022507864A - 表面保護フィルムおよび有機発光電子装置の製造方法 - Google Patents
表面保護フィルムおよび有機発光電子装置の製造方法 Download PDFInfo
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- JP2022507864A JP2022507864A JP2021528422A JP2021528422A JP2022507864A JP 2022507864 A JP2022507864 A JP 2022507864A JP 2021528422 A JP2021528422 A JP 2021528422A JP 2021528422 A JP2021528422 A JP 2021528422A JP 2022507864 A JP2022507864 A JP 2022507864A
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- protective film
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- surface protective
- sensitive adhesive
- pressure
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Abstract
Description
前記低温剥離力は、前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した後、前記表面保護フィルムを前記ガラスから1.8m/minの剥離速度および180°の剥離角度で25℃の温度で剥離する時の剥離力であり、
前記高温剥離力は、前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した後、40℃で1分間放置し、前記表面保護フィルムを前記ガラスから1.8m/minの剥離速度および180°の剥離角度で40℃の温度で剥離する時の剥離力である。
前記低温剥離力は、前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した後、前記表面保護フィルムを前記ガラスから1.8m/minの剥離速度および180°の剥離角度で25℃の温度で剥離する時の剥離力である。前記低温剥離力の測定方法において、ガラスに付着される粘着剤層の面は、粘着剤層の基材層が備えられた面の反対面である。
フェノールフタレイン指示薬:フェノールフタレイン原液0.5g、エタノール250gおよび蒸留水250gを混合した溶液
A:ブランク(blank)に必要な0.5N KOH(ml)
B:本テストに必要な0.5N KOH(ml)
F:1N HCL 10mlにマグネチックバーとフェノールフタレイン指示薬10滴を入れた後、0.5N KOHで滴定する時のKOHの量(ml)
<ウレタン重合体の製造>
窒素ガスで充填した三口フラスコに3官能プレミノール(ポリエーテルポリオール、polyether polyol、S 4013F、ASAHI GLASS CO.LTD.、Mn=12,000g/mol)80重量部、2官能ポリオール(ポリプロピレングリコール、PPG-1000d、KUMHO石油化学、Mn=1,000g/mol)5重量部、および3官能MPD/TMPT系ポリオール(MPD(3-メチル-1,5-ペンタンジオール、3-methyl-1,5-pentanediol)とTMPT(トリメチロールプロパンアジペート、trimethylol propane adipate)の混合物、Polyol F-3010、Kuraray社、Mn=3,000g/mol)15重量部と、エチルアセテート(ethyl acetate)とを投入し、触媒(DBTDL)下で15分間高速攪拌した。次に前記プレミノール、ポリオールおよびMPD/TMPT系ポリオール100重量部に対して多官能脂環式イソシアネート化合物(MHG-80B、ASAHI KASEI社)18重量部を徐々に滴加しながら加熱して90±5℃で3時間維持し、イソシアネート(NCO)ピークが消滅するまで反応させて、重量平均分子量が110,000g/molのウレタン重合体を製造した。
窒素ガスが還流し、温度調節が容易になるように冷却装置を設置した1L反応器にブチルメタクリレート(BMA)80重量部、デシルアクリレート(DA)10重量部および2-ヒドロキシエチルアクリレート(2-HEA)10重量部で構成される単量体混合物を投入した後、溶媒としてエチルアセテートを投入した。その次に、酸素を除去するために窒素ガスを約1時間パージ(purging)した後、反応器の温度を62℃に維持した。混合物を均一にした後、反応開始剤としてアゾビスイソブチロニトリル(AIBN)400ppmおよび連鎖移動剤としてn-ドデシルメルカプタン(n-dodecylmercaptan、n-DDM)400ppmを投入し、混合物を反応させた。反応後にトルエンで希釈して、重量平均分子量が30,000g/molのアクリル系重合体(D1)を製造した。
前記製造されたウレタン重合体100重量部、前記ウレタン重合体100重量部に対してHDI Trimer系硬化剤(TKA-100、ASAHI KASEI社)15重量部、前記アクリル系重合体(D1)10重量部、触媒(DBTDL)0.005重量部および硬化遅延剤(アセチルアセトン)3重量部を混合して、固形分濃度が48wt%になるようにトルエン(Toluene)溶媒を入れ、ディスパー(disper)で攪拌して粘着剤組成物1を製造した。
デシルアクリレート(DA)の代わりにラウリルアクリレート(LA)を用いたことを除いては、アクリル系重合体(D1)の製造方法と同様の方法により、重量平均分子量30,000g/molのアクリル系重合体(D2)を製造した。
デシルアクリレート(DA)の代わりにステアリルメタクリレート(STMA)を用いたことを除いては、アクリル系重合体(D1)の製造方法と同様の方法により、重量平均分子量30,000g/molのアクリル系重合体(D3)を製造した。
デシルアクリレート(DA)の代わりにベヘニルアクリレート(BEMA)を用いたことを除いては、アクリル系重合体(D1)の製造方法と同様の方法により、重量平均分子量30,000g/molのアクリル系重合体(D4)を製造した。
アクリル系重合体(D1)を用いないことを除いては、粘着剤組成物1の製造方法と同様の方法により比較組成物1を製造した。
アクリル系重合体(D1)の代わりに可塑剤としてイソプロピルミリステート(IPMS)をウレタン重合体100重量部に対して20重量部で用いたことを除いては、粘着剤組成物1の製造方法と同様の方法により比較組成物2を製造した。
基材層としては、基材フィルムの両面に各々50nmの帯電防止層がコーティングされた75μm厚さのポリエチレンテレフタレート(PET)フィルム(H330、KOLON社)を準備した。保護層としては、50μm厚さのポリエチレンテレフタレート(PET)フィルム(XD510P、TAK社)の両面に帯電防止層が形成され、一つの帯電防止層上に離型層がコーティングされたフィルム(12ASW、SKC社)を準備した。次に、前記基材層の一面に前記粘着剤組成物を75μm厚さでコンマコーティングし熱風乾燥した後、前記基材層と前記離型層が対向するように粘着剤組成物上に保護層をラミネートして40℃で5日間熟成した後に表面保護フィルムを製造した。
実施例1~4および比較例1および2の表面保護フィルムを幅25mm、長さ150mmになるように裁断した。その次に、2kgのローラを用いて表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した。その次に、装置(Texture Analyzer、英国ステーブルマイクロシステム社製)を用いて、25℃で前記表面保護フィルムをガラスから1.8m/minの剥離速度および180°の剥離角度で剥離しつつ低温剥離力を評価した。低温剥離力は、2個の同一な試片に対して測定した後にその平均値を採用した。
実施例1~4および比較例1および2の表面保護フィルムを幅25mm、長さ150mmになるように裁断した。その次に、2kgのローラを用いて前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した。その次に、加温チャンバー(chamber)が設けられた装置(Texture Analyzer、英国ステーブルマイクロシステム社製)を用いて、前記粘着剤層が形成された基材フィルムを40℃で1分間放置した後、40℃で前記表面保護フィルムをガラスから1.8m/minの剥離速度および180°の剥離角度で剥離しつつ高温剥離力を評価した。高温剥離力は、2個の同一な試片に対して測定した後にその平均値を採用した。
粘着力維持率(%)は、(高温剥離力)/(低温剥離力)×100で計算した。
11B ・・・第2帯電防止層
11C ・・・第3帯電防止層
11D ・・・第4帯電防止層
110 ・・・基材層
111 ・・・基材フィルム
123 ・・・離型層
124 ・・・粘着剤層
130 ・・・保護層
131 ・・・保護フィルム
140 ・・・被着材
510 ・・・有機発光素子
511 ・・・バックプレート
512 ・・・プラスチック基板
513 ・・・薄膜トランジスタ
514 ・・・有機発光ダイオード
515 ・・・封止層
Claims (14)
- 基材層;および前記基材層の一面に備えられた粘着剤層を含む表面保護フィルムであって、
前記粘着剤層はウレタン重合体;アクリル系重合体;および硬化剤を含む粘着剤組成物の硬化物を含み、
前記粘着剤層の粘着力維持率は50%以上である、表面保護フィルム:
前記粘着剤層の粘着力維持率は、(高温剥離力)/(低温剥離力)×100であり、
前記低温剥離力は、前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した後、前記表面保護フィルムを前記ガラスから1.8m/minの剥離速度および180°の剥離角度で25℃の温度で剥離する時の剥離力であり、
前記高温剥離力は、前記表面保護フィルムの粘着剤層をガラスに付着し、25℃で24時間保管した後、40℃で1分間放置し、前記表面保護フィルムを前記ガラスから1.8m/minの剥離速度および180°の剥離角度で40℃の温度で剥離する時の剥離力である。 - 前記低温剥離力は0.5gf/in以上10gf/in以下である、請求項1に記載の表面保護フィルム。
- 前記高温剥離力は0.5gf/in以上5gf/in以下である、請求項1または2に記載の表面保護フィルム。
- 前記アクリル系重合体は、前記ウレタン重合体100重量部に対して1重量部~20重量部で含まれる、請求項1から3のいずれか一項に記載の表面保護フィルム。
- 前記アクリル系重合体は、炭素数10以上のアルキル(メタ)アクリレート単量体を単量体単位として含む、請求項1から4のいずれか一項に記載の表面保護フィルム。
- 前記炭素数10以上のアルキル(メタ)アクリレート単量体は、前記アクリル系重合体に含まれる単量体単位の全量に対して1重量%~20重量%で含まれる、請求項5に記載の表面保護フィルム。
- 前記アクリル系重合体は、水酸基を含む(メタ)アクリレート単量体を単量体単位として含む、請求項1から6のいずれか一項に記載の表面保護フィルム。
- 前記水酸基を含む(メタ)アクリレート単量体は、前記アクリル系重合体に含まれる単量体単位の全量に対して1重量%~20重量%で含まれる、請求項7に記載の表面保護フィルム。
- 前記アクリル系重合体の水酸基価は5mgKOH/g~40mgKOH/gである、請求項1から8のいずれか一項に記載の表面保護フィルム。
- 前記基材層は基材フィルム;および前記基材フィルムの両面に各々備えられた第1帯電防止層および第2帯電防止層を含み、
前記粘着剤層は前記第2帯電防止層の前記基材フィルムが備えられた面の反対面に備えられる、請求項1から9のいずれか一項に記載の表面保護フィルム。 - 前記粘着剤層の前記基材層が備えられた面の反対面に備えられた保護層をさらに含み、
前記保護層は保護フィルム;および前記保護フィルムの両面に各々備えられた第3帯電防止層および第4帯電防止層を含み、
前記粘着剤層は前記第3帯電防止層の前記保護フィルムが備えられた面の反対面に備えられる、請求項1から10のいずれか一項に記載の表面保護フィルム。 - 請求項1から11のいずれか一項に記載の表面保護フィルムの粘着剤層を有機発光素子の封止層上に付着するステップを含む有機発光電子装置の製造方法。
- 前記有機発光素子は、バックプレート、プラスチック基板、薄膜トランジスタ、有機発光ダイオードおよび封止層を順に含む、請求項12に記載の有機発光電子装置の製造方法。
- 前記表面保護フィルムを前記封止層から剥離するステップ;および前記封止層上にタッチスクリーンパネルおよびカバーウィンドウを積層するステップをさらに含む、請求項12または13に記載の有機発光電子装置の製造方法。
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WO2011122178A1 (ja) * | 2010-03-31 | 2011-10-06 | リンテック株式会社 | 粘着シート |
JP2012052036A (ja) * | 2010-09-01 | 2012-03-15 | Nitto Denko Corp | 仮固定シート |
JP2017039859A (ja) * | 2015-08-20 | 2017-02-23 | 日東電工株式会社 | セパレーター付表面保護フィルム |
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WO2018047649A1 (ja) * | 2016-09-09 | 2018-03-15 | 東洋インキScホールディングス株式会社 | 感圧式接着剤、感圧式接着フィルム、および光学積層体 |
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KR20200092725A (ko) | 2020-08-04 |
CN113166596B (zh) | 2023-07-14 |
JP7191223B2 (ja) | 2022-12-16 |
KR102526905B1 (ko) | 2023-04-27 |
TW202039765A (zh) | 2020-11-01 |
WO2020153756A1 (ko) | 2020-07-30 |
TWI732436B (zh) | 2021-07-01 |
CN113166596A (zh) | 2021-07-23 |
US20220017787A1 (en) | 2022-01-20 |
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