JP2015530702A - 接着フィルム及びこれを利用した有機電子装置の封止方法 - Google Patents
接着フィルム及びこれを利用した有機電子装置の封止方法 Download PDFInfo
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- JP2015530702A JP2015530702A JP2015525369A JP2015525369A JP2015530702A JP 2015530702 A JP2015530702 A JP 2015530702A JP 2015525369 A JP2015525369 A JP 2015525369A JP 2015525369 A JP2015525369 A JP 2015525369A JP 2015530702 A JP2015530702 A JP 2015530702A
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Abstract
Description
本発明で有機電子装置の封止方法は、例えば、ガラスまたは高分子フィルムのような基板1上に真空蒸着またはスパッタリングなどの方法で透明電極を形成し、前記透明電極上に有機材料層を形成する。前記有機材料層は、正孔注入層、正孔輸送層、発光層、電子注入層及び/または電子輸送層を含むことができる。次に、前記有機材料層上に第2電極をさらに形成する。その後、前記基板1上の有機電子装置2の上部に前記有機電子装置2をすべてカバーするように前述した接着フィルム3を適用する。この際、前記接着フィルム3を適用する方法は、特に限定されず、例えば、基板上に形成された有機電子装置2の上部に、本発明の接着フィルムの接着剤層をあらかじめ転写しておいたカバー基板(例えば、ガラスまたは高分子フィルム)4を加熱、圧着などの方法で適用することができる。前記段階では、例えば、カバー基板4上に接着フィルム3を転写するとき、前述した本発明の接着フィルムを使用して、前記フィルムに形成された基材または離型フィルムを剥離した後、熱を加えながら、真空プレスまたは真空ラミネータなどを用いてカバー基板4上に転写することができる。この過程で、接着フィルム3の硬化反応が一定範囲以上行われれば、接着フィルムの密着力ないし接着力が減少するおそれがあるので、工程温度を約100℃以下、工程時間を5分以内に制御することが好ましい。同様に、接着フィルム3が転写されたカバー基板4を有機電子装置に加熱圧着する場合にも、真空プレスまたは真空ラミネータを利用することができる。この段階での温度条件は、前述したように設定することができ、工程時間は、10分以内が好ましい。但し、接着フィルムの第2接着層3bより第1接着層3aが有機電子装置に当接するように(有機電子装置が保護膜を具備する場合には保護膜に当接するように)接着フィルムを有機電子装置に適用する。
1.第1接着層溶液製造
ビスフェノールA型液相エポキシ樹脂(eqw.200)70重量部、ビスフェノールA型固相エポキシ樹脂(eqw.500)30重量部、及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)100重量部を反応器内に投入し、メチルエチルケトンで希釈した。その後、反応器の内部を窒素で置換し、製造された溶液を均質化した。前記均質化された溶液に硬化剤であるイミダゾール(2MA−OK)5重量部を投入した後、1時間高速撹拌し、第1接着層の溶液を製造した。
水分吸着剤としてCaO(Aldrich)40重量部をメチルエチルケトンに30wt%の濃度で投入して水分吸着剤溶液を製造し、前記溶液をボールミル工程によって24時間ミーリングした。また、これとは別に、常温で反応器にビスフェノールA型液相エポキシ樹脂(eqw.200)60重量部、ビスフェノールA型固相エポキシ樹脂(eqw.500)40重量部、及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)100重量部を投入し、メチルエチルケトンで希釈した。その後、反応器の内部を窒素で置換し、製造された溶液を均質化した。前記均質化された溶液にあらかじめ準備した水分吸着剤溶液を投入し、硬化剤であるイミダゾール(2MA−OK)5重量部を投入した後、1時間高速撹拌し、第2接着層の溶液を製造した。
前記で準備しておいた第1接着層の溶液を離型PETの離型面にコンマコーターを用いて塗布し、乾燥器で130℃に3分間乾燥し、厚さが15μmの接着層を形成した。
前記で準備しておいた第2接着層の溶液を離型PETの離型面にコンマコーターを用いて塗布し、乾燥器で130℃に3分間乾燥し、厚さが30μmの接着層を形成した。
前記第1接着層及び第2接着層の接着層を合着し、多層の接着フィルムを製造した。
前記実施例1の接着フィルム製造過程で、第1接着層溶液に高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)の代わりに、高分子量ビスフェノールA型エポキシ樹脂(Mw 80K)100重量部を添加し、第2接着層溶液にも高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)の代わりに、高分子量ビスフェノールA型エポキシ樹脂(Mw 80K)100重量部を添加することを除いて、実施例1と同一の方法で多層構造の接着フィルムを製造した。
前記実施例1の接着フィルム製造過程で、第1接着層溶液にビスフェノールA型液相エポキシ樹脂(eqw.200)40重量部及びビスフェノールA型固相エポキシ樹脂(eqw.500)60重量部を添加し、高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)の代わりに、高分子量ビスフェノールA型エポキシ樹脂(Mw 80K)100重量部を添加し、第2接着層溶液には、ビスフェノールA型液相エポキシ樹脂(eqw.200)70重量部、及びビスフェノールA型固相エポキシ樹脂(eqw.500)30重量部を添加したことを除いて、実施例1と同一の方法で多層構造の接着フィルムを製造した。
前記実施例1のような接着フィルム製造過程で実施し、且つ実施例1の第2接着層溶液においてビスフェノールA型固相エポキシ樹脂(eqw.500)を除外し、ビスフェノールA型液相エポキシ樹脂(eqw.200)150重量部、及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)50重量部を添加し、硬化剤であるイミダゾール(2MA−OK)7重量部を投入することを除いて、実施例1と同一の方法で多層構造の接着フィルムを製造した。
前記実施例1のような接着フィルム製造過程で実施し、且つ実施例1の第1接着層溶液にビスフェノールA型液相エポキシ樹脂(eqw.200)10重量部、ビスフェノールA型固相エポキシ樹脂(eqw.500)90重量部、及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)の代わりに、高分子量ビスフェノールA型エポキシ樹脂(Mw 80K)100重量部を添加し、第2接着層溶液にビスフェノールA型液相エポキシ樹脂(eqw.200)10重量部、ビスフェノールA型固相エポキシ樹脂(eqw.500)90重量部及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)の代わりに、高分子量ビスフェノールA型エポキシ樹脂(Mw 80K)100重量部を添加することを除いて、実施例1と同一の方法で多層構造の接着フィルムを製造した。
前記実施例1のような接着フィルム製造過程で実施し、且つ実施例1の第1接着層溶液においてビスフェノールA型固相エポキシ樹脂(eqw.500)を除外し、ビスフェノールA型液相エポキシ樹脂(eqw.200)150重量部、及び高分子量ビスフェノールA型エポキシ樹脂(Mw 50K)50重量部を反応器内に投入し、メチルエチルケトンで希釈し、硬化剤であるイミダゾール(2MA−OK)7重量部を投入したことを除いて、実施例1と同一の方法で多層構造の接着フィルムを製造した。
2 有機電子装置
3 接着フィルム
3a 第1接着層
3b 第2接着層
4 封止基板
Claims (20)
- 60℃〜100℃で損失係数(tanδ)が1〜5の第1接着層と;前記第1接着層の一面に形成された第2接着層と;を含む有機電子素子封止用接着フィルム。
- 前記第1接着層の粘度値は第2接着層の粘度値以下である、請求項1に記載の接着フィルム。
- 接着フィルムは、硬化性樹脂及び水分吸着剤を含み、第1接着層及び第2接着層内の全体水分吸着剤の質量を基準として前記第1接着層には0〜20%、前記第2接着層には80〜100%の水分吸着剤を含む、請求項1に記載の接着フィルム。
- 第1接着層は、有機電子素子と接触する層であり、第2接着層は、前記有機電子素子と接触しない層である、請求項1に記載の接着フィルム。
- 第1接着層または第2接着層は、60℃〜100℃での粘度が3,000poise〜300,000poiseである、請求項2に記載の接着フィルム。
- 第1接着層または第2接着層は、60℃〜100℃での粘度が5,000poise〜300,000poiseである、請求項5に記載の接着フィルム。
- 硬化性樹脂は、硬化状態で透湿度が50g/m2・day以下である、請求項3に記載の接着フィルム。
- 前記硬化性樹脂は、熱硬化性樹脂、光硬化性樹脂またはデュアル硬化性樹脂である、請求項3に記載の接着フィルム。
- 前記水分吸着剤が、アルミナ、金属酸化物、金属塩または五酸化リンである、請求項3に記載の接着フィルム。
- 前記水分吸着剤が、P2O5、Li2O、Na2O、BaO、CaO、MgO、Li2SO4、Na2SO4、CaSO4、MgSO4、CoSO4、Ga2(SO4)3、Ti(SO4)2、NiSO4、CaCl2、MgCl2、SrCl2、YCl3、CuCl2、CsF、TaF5、NbF5、LiBr、CaBr2、CeBr3、SeBr4、VBr3、MgBr2、BaI2、MgI2、Ba(ClO4)2及びMg(ClO4)2よりなる群から選択された1つ以上である、請求項9に記載の接着フィルム。
- 第2接着層は、硬化性樹脂100重量部に対して、1重量部〜100重量部の水分吸着剤を含む、請求項3に記載の接着フィルム。
- 第1接着層は、硬化性樹脂100重量部に対して、0重量部〜20重量部の水分吸着剤を含む、請求項3に記載の接着フィルム。
- 第1接着層または第2接着層は、フィラーをさらに含む、請求項3に記載の接着フィルム。
- 前記フィラーが、クレイ、タルク、シリカ、ゼオライト、ジルコニア、チタニア及びモンモリロナイトよりなる群から選択される1つ以上である、請求項13に記載の接着フィルム。
- 第1接着層または第2接着層は、硬化剤をさらに含む、請求項3に記載の接着フィルム。
- 第1接着層または第2接着層は、高分子量樹脂をさらに含む、請求項3に記載の接着フィルム。
- 有機電子装置が形成された基板に請求項1に記載の接着フィルムの第1接着層を有機電子素子と接触するようにラミネートする段階と;前記接着フィルムを硬化する段階と;を含む有機電子装置の封止方法。
- 第1接着層が有機電子素子の前面をカバーするようにラミネートする、請求項17に記載の有機電子素子の封止方法。
- 有機電子素子と接触する第1接着層を含む接着フィルムを60℃〜100℃に維持する段階を含む、請求項17に記載の有機電子素子の封止方法。
- 基板と;前記基板上に形成された有機電子素子と;前記有機電子素子を封止している請求項1に記載の接着フィルムと;を含む有機電子装置。
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JP6384279B2 (ja) * | 2014-11-17 | 2018-09-05 | 三菱ケミカル株式会社 | 樹脂組成物、その製造方法及びその利用 |
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TW201425024A (zh) | 2014-07-01 |
WO2014021698A1 (ko) | 2014-02-06 |
CN104488107B (zh) | 2016-10-19 |
US9343697B2 (en) | 2016-05-17 |
TWI504507B (zh) | 2015-10-21 |
JP6010838B2 (ja) | 2016-10-19 |
EP2835841A1 (en) | 2015-02-11 |
CN104488107A (zh) | 2015-04-01 |
KR20140018816A (ko) | 2014-02-13 |
US20150060836A1 (en) | 2015-03-05 |
KR101424401B1 (ko) | 2014-07-28 |
EP2835841A4 (en) | 2015-11-25 |
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