JP7420310B2 - 導電性フィルムの製造方法 - Google Patents
導電性フィルムの製造方法 Download PDFInfo
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- JP7420310B2 JP7420310B2 JP2023144680A JP2023144680A JP7420310B2 JP 7420310 B2 JP7420310 B2 JP 7420310B2 JP 2023144680 A JP2023144680 A JP 2023144680A JP 2023144680 A JP2023144680 A JP 2023144680A JP 7420310 B2 JP7420310 B2 JP 7420310B2
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- film
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- piece
- release
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Description
図1に示すように、巻回体1は、長尺の(テープ状の)異方導電性フィルム2と、異方導電性フィルム2が巻回された巻芯3と、を備える。つまり、巻回体1は、巻芯3に異方導電性フィルム2が巻回されてなる。
図1~図3に示すように、異方導電性フィルム2は、長尺の(テープ状の)剥離フィルム4と、剥離フィルム4上に設けられた複数の導電性を有する接着剤フィルム片5と、を備える。接着剤フィルム片5は、導電性を有するために、接着剤6に導電粒子7が分散されたものである。なお、平面視において、異方導電性フィルム2の外形は、剥離フィルム4の外形により規定される。
図5に示すように、接続構造体10は、第一接着面11aを有する第一回路部材11と、第二接着面12aを有する第二回路部材12と、第一接着面11aと第二接着面12aとを接続する接着剤フィルム片5と、を備える。
図6に示すように、接続構造体の製造方法は、フィルム製造工程(S1)と、フィルム製造工程(S1)の後に行う接続工程(S2)と、を備える。
図19に示すように、変形例1の異方導電性フィルム2Hは、接着剤フィルム片5を覆う第二剥離フィルム片8を更に備えている。つまり、異方導電性フィルム2Hは、長尺の剥離フィルム4と、剥離フィルム4上に設けられて、接着剤6に導電粒子7が分散された複数の接着剤フィルム片5と、各接着剤フィルム片5上に設けられた第二剥離フィルム片8と、を備える。第二剥離フィルム片8は、接着剤フィルム片5の表面を覆うことで接着剤フィルム片5を保護するフィルムである。このため、変形例1では、巻回体1は、この異方導電性フィルム2Hが巻芯3に巻回されてなる。
図21に示すように、変形例2の接続構造体の製造方法では、接続工程(S2)は、位置検出工程(S21)の前に行うフィルム切断工程(S24)を更に備えている。
上記実施形態では、本発明に係る導電性フィルムを、異方導電性を有する異方導電性フィルムに適用したものとして説明したが、本発明に係る導電性フィルムは、異方導電性を有する異方導電性フィルムに限定されるものではない。つまり、接着剤フィルム片及び接着剤フィルム層は、導電性を有していればよく、接着剤に導電粒子が分散されているものでなくてもよい。この場合の接着剤フィルム片及び接着剤フィルム層としては、酸化インジウムスズ(Indium-Tin-Oxide:ITO)、酸化インジュウム、酸化スズ等の金属酸化物、導電性繊維を含むもの、などが挙げられる。この導電性繊維としては、例えば、金、銀、白金等の金属繊維、及びカーボンナノチューブ等の炭素繊維が挙げられる。
Claims (12)
- 長尺の剥離フィルム上に、複数の導電性を有する接着剤フィルム片が設けられるとともに、前記複数の接着剤フィルム片が前記剥離フィルムの長手方向に配列され、前記剥離フィルムの幅方向における前記剥離フィルムの端縁と当該端縁に最も近い前記接着剤フィルム片とが離間されている導電性フィルムを製造するフィルム製造工程を備え、
前記フィルム製造工程は、
前記剥離フィルム上に、導電性を有する接着剤フィルム層を形成する接着剤フィルム層形成工程と、
前記接着剤フィルム層を、前記接着剤フィルム片の外形を成す外形線に沿って切断する接着剤フィルム層切断工程と、
切断された前記外形線に沿って、前記接着剤フィルム層における前記接着剤フィルム片以外の部分となる余白部分を、前記剥離フィルムから剥離する余白剥離工程と、を有する、
導電性フィルムの製造方法。 - 長尺の剥離フィルム上に、複数の導電性を有する接着剤フィルム片が設けられるとともに、前記複数の接着剤フィルム片が前記剥離フィルムの長手方向に配列され、前記剥離フィルムの幅方向における前記剥離フィルムの端縁と当該端縁に最も近い前記接着剤フィルム片とが離間されている導電性フィルムを製造するフィルム製造工程を備え、
前記フィルム製造工程は、
前記剥離フィルム上に導電性を有する接着剤フィルム層が形成された原フィルムの前記接着剤フィルム層を、前記接着剤フィルム片の外形を成す外形線に沿って切断する接着剤フィルム層切断工程と、
切断された前記外形線に沿って、前記接着剤フィルム層における前記接着剤フィルム片以外の部分となる余白部分を、前記剥離フィルムから剥離する余白剥離工程と、を有する、
導電性フィルムの製造方法。 - 長尺の剥離フィルム上に、複数の導電性を有する接着剤フィルム片が設けられるとともに、前記複数の接着剤フィルム片が前記剥離フィルムの長手方向に配列され、前記剥離フィルムの長手方向に離間している導電性フィルムを製造するフィルム製造工程を備え、
前記フィルム製造工程は、
前記剥離フィルム上に導電性を有する接着剤フィルム層が形成された原フィルムの前記接着剤フィルム層を、前記接着剤フィルム片の外形を成す外形線に沿って切断する接着剤フィルム層切断工程と、
切断された前記外形線に沿って、前記接着剤フィルム層における前記接着剤フィルム片以外の部分となる余白部分を、前記剥離フィルムから剥離する余白剥離工程と、を有する、
導電性フィルムの製造方法。 - 前記接着剤フィルム片は、接着剤に導電粒子を含む、
請求項1~3の何れか一項に記載の導電性フィルムの製造方法。 - 前記接着剤フィルム層は、接着剤に導電粒子を含む、
請求項1~3の何れか一項に記載の導電性フィルムの製造方法。 - 前記フィルム製造工程は、前記接着剤フィルム片上に、第二剥離フィルム片が設けられた前記導電性フィルムを製造する、
請求項1に記載の導電性フィルムの製造方法。 - 前記接着剤フィルム層形成工程では、前記接着剤フィルム層上に、第二剥離フィルムを被せ、
前記接着剤フィルム層切断工程では、前記接着剤フィルム層及び前記第二剥離フィルムを、前記接着剤フィルム片の外形を成す外形線に沿って切断し、
前記余白剥離工程では、切断された前記外形線に沿って、前記接着剤フィルム層及び前記第二剥離フィルムにおける前記接着剤フィルム片以外の部分となる余白部分を、前記剥離フィルムから剥離する、
請求項6に記載の導電性フィルムの製造方法。 - 前記フィルム製造工程は、前記接着剤フィルム片上に、第二剥離フィルム片が設けられた前記導電性フィルムを製造する、
請求項2又は3に記載の導電性フィルムの製造方法。 - 前記原フィルムは、前記接着剤フィルム層上に、第二剥離フィルムが被せられており、
前記接着剤フィルム層切断工程では、前記接着剤フィルム層及び前記第二剥離フィルムを、前記接着剤フィルム片の外形を成す外形線に沿って切断し、
前記余白剥離工程では、切断された前記外形線に沿って、前記接着剤フィルム層及び前記第二剥離フィルムにおける前記接着剤フィルム片以外の部分となる余白部分を、前記剥離フィルムから剥離する、
請求項8に記載の導電性フィルムの製造方法。 - 前記接着剤フィルム層は、接着剤に導電粒子を含む、
請求項7又は9に記載の導電性フィルムの製造方法。 - 前記複数の接着剤フィルム片は、穴が形成されている、
請求項1~10の何れか一項に記載の導電性フィルムの製造方法。 - 前記接着剤フィルム層切断工程では、前記複数の接着剤フィルム片のそれぞれの外形に沿って前記剥離フィルムに切込みが形成されるように、前記接着剤フィルム層を、前記接着剤フィルム片の外形を成す外形線に沿って切断する、
請求項1~11の何れか一項に記載の導電性フィルムの製造方法。
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