JP2020500111A - 可撓性基板製造用の積層体及びそれを用いた可撓性基板の製造方法 - Google Patents
可撓性基板製造用の積層体及びそれを用いた可撓性基板の製造方法 Download PDFInfo
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- JP2020500111A JP2020500111A JP2019517360A JP2019517360A JP2020500111A JP 2020500111 A JP2020500111 A JP 2020500111A JP 2019517360 A JP2019517360 A JP 2019517360A JP 2019517360 A JP2019517360 A JP 2019517360A JP 2020500111 A JP2020500111 A JP 2020500111A
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- 238000004090 dissolution Methods 0.000 description 1
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Abstract
Description
[化学式3a]
[化学式4a]
[化学式5]
[化学式7]
[化学式1a]
[化学式3a]
[化学式4a]
[化学式5]
[化学式7]
キャリア基板として無アルカリガラス基板の一面に、BPDA(3,3,4,4'−ビフェニルテトラカルボン酸二無水物)1molとDABA(4,4'−ジアミノベンズアニリド)0.99molとを重合させて製造したポリアミック酸系樹脂3重量%と溶媒としてDMAc(ジメチルアセトアミド)97重量%とを含む組成物を乾燥した後、厚さが0.05μmになるように塗布した。
キャリア基板として無アルカリガラスの一面に、BPDA 1molと下記構造式のDATA 0.99molとを重合させて製造したポリアミック酸系樹脂3重量%と溶媒としてDMAc 97重量%とを含む組成物を乾燥した後、厚さが0.05μmになるように塗布した。
キャリア基板として無アルカリガラスの一面に、BPDA 1molとTFMB 0.99molとを重合させて製造したポリアミック酸系樹脂12重量%と溶媒としてDMAc 88重量%とを含む組成物を乾燥した後、厚さが10μmになるように塗布し、結果として製造された塗膜に対して、100℃での乾燥工程及び300℃で60分の硬化工程を連続して実施して、可撓性基板用ポリマー層を形成した。
キャリア基板として無アルカリガラスの一面に、BPDA 1molとPDA(p−フェニレンジアミン)0.99molとを重合させて製造したポリアミック酸系樹脂3重量%と溶媒としてDMAc 97重量%とを含む組成物を乾燥した後、厚さが0.05μmになるように塗布した。
前記実施例1〜実施例2及び比較例1〜比較例2から製造された積層体に対して、レーザ装備(高麗半導体)を使用して308nmの波長のレーザに対する剥離評価を実施した。
Claims (12)
- キャリア基板と、
前記キャリア基板の一面に位置し、分子構造内にアミド結合(−C(O)NH−)を含んでいるポリイミド系樹脂を含む有機犠牲層と、
前記有機犠牲層上に位置する可撓性基板層と、を含み、
前記有機犠牲層が、UVレーザによって、前記可撓性基板層に対する接着力が減少する可撓性基板製造用の積層体。 - 前記ポリイミド系樹脂を含む有機犠牲層は、厚さが100nmである時、200nm〜350nmの波長のUV透過度が30%以下である請求項1に記載の可撓性基板製造用の積層体。
- 前記ポリイミド系樹脂は、下記化学式3a〜化学式3cから選択される1種以上のジアミンと1種以上のテトラカルボン酸二無水物とを重合して製造された請求項1または2に記載の可撓性基板製造用の積層体:
[化学式3a]
前記R21〜R29は、それぞれ独立してハロゲン原子、ヒドロキシル基(−OH)、チオール基(−SH)、ニトロ基(−NO2)、シアノ基(−CN)、炭素数1〜10のアルキル基、炭素数1〜4のハロゲノアルコキシ基、炭素数1〜10のハロゲノアルキル基、炭素数6〜20のアリール基から選択される置換基であり、
b1〜b9は、それぞれ独立して0〜4の整数である。 - 前記有機犠牲層に含まれるポリイミドは、下記化学式4a〜化学式4cのうちから選択される1つ以上の反復構造を含む請求項1から3のいずれか一項に記載の可撓性基板製造用の積層体:
[化学式4a]
- 前記可撓性基板が、ポリイミドを含む請求項1から4のいずれか一項に記載の可撓性基板製造用の積層体。
- 前記可撓性基板に含まれるポリイミドは、下記化学式5のジアミンをさらに含む請求項5に記載の可撓性基板製造用の積層体:
[化学式5]
前記R31及びR32は、それぞれ独立してハロゲン原子、ヒドロキシル基(−OH)、チオール基(−SH)、ニトロ基(−NO2)、シアノ基、炭素数1〜10のアルキル基、炭素数1〜4のハロゲノアルコキシ、炭素数1〜10のハロゲノアルキル、炭素数6〜20のアリール基から選択される置換体であり、
n及びmは、それぞれ独立して0〜4の整数である。
Q1は、単一結合、−O−、−CR18R19−、−C(=O)−、−C(=O)O−、−S−、−SO2−、フェニレン基、及びこれらの組合わせからなる群から選択されるものであり、この際、前記R18及びR19は、それぞれ独立して水素原子、炭素数1〜10のアルキル基、及び炭素数1〜10のフルオロアルキル基からなる群から選択されるものである。 - 前記可撓性基板に含まれるポリイミドは、下記化学式7の反復構造を含む請求項5または6に記載の可撓性基板製造用の積層体:
[化学式7]
- 前記有機犠牲層上にバリア層及び金属層から選択される1つ以上の機能性付加層をさらに含む請求項1から7のいずれか一項に記載の可撓性基板製造用の積層体。
- 前記有機犠牲層が、キャリア基板に対する接着力が変化するUVレーザのエネルギー密度(E/D)が230mJ/cm2以下である請求項1から8のいずれか一項に記載の可撓性基板製造用の積層体。
- 前記有機犠牲層に含まれたポリイミドの30℃〜500℃の温度範囲で熱膨張係数(CTE)が、0〜20ppm/℃である請求項1から9のいずれか一項に記載の可撓性基板製造用の積層体。
- キャリア基板上に、分子構造内にアミド結合(−C(O)NH−)を含んでいるポリイミド前駆体溶液を塗布及びコーティングして、ポリイミドを含む有機犠牲層を形成する段階と、
前記有機犠牲層上に可撓性基板層を形成する段階と、
前記可撓性基板層をUVレーザを用いて、前記有機犠牲層が形成されたキャリア基板から剥離するレーザ剥離段階と、
を含む可撓性基板の製造方法。 - 前記有機犠牲層上にバリア層及び金属層のうちから選択される1つ以上の機能性付加層を形成する段階をさらに含む請求項11に記載の可撓性基板の製造方法。
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