JP6486053B2 - 電子回路基板の製造方法 - Google Patents
電子回路基板の製造方法 Download PDFInfo
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- JP6486053B2 JP6486053B2 JP2014204612A JP2014204612A JP6486053B2 JP 6486053 B2 JP6486053 B2 JP 6486053B2 JP 2014204612 A JP2014204612 A JP 2014204612A JP 2014204612 A JP2014204612 A JP 2014204612A JP 6486053 B2 JP6486053 B2 JP 6486053B2
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Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1275—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by other printing techniques, e.g. letterpress printing, intaglio printing, lithographic printing, offset printing
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/02—Letterpress printing, e.g. book printing
- B41M1/04—Flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
- H05K1/097—Inks comprising nanoparticles and specially adapted for being sintered at low temperature
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
- B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
- B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
- B41F3/18—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes
- B41F3/20—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes with fixed type-beds and travelling impression cylinders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0242—Shape of an individual particle
- H05K2201/0257—Nanoparticles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1131—Sintering, i.e. fusing of metal particles to achieve or improve electrical conductivity
Description
〔基材の選択〕
基材の適否は、表面の「水の接触角」により判定した。なお、接触角の測定は、前記と同様、協和界面科学社製の自動接触角計DropMaster(DM)300を使用して、画像解析を用いた液滴法(θ/2法、滴下液量2μl)により、静的接触角を測定した。
適否の判定に用いた基材は、インクジェットプリンタ用写真用紙(コート紙あるいは光沢紙として市販されている厚手の印画紙タイプのもの)2種と、ポリエチレンテレフタレート(PET)製フィルム〔表面コーティング(インク受容層)の有・無〕を2種類用意した。
上記各写真用紙a,bとPETフィルムc(コーティング有り),PETフィルムd(コーティングなし)とを、それぞれ、室温(23℃)下無風状態で、前記自動接触角計の測定台(水平)の上に載置して、水の液滴の滴下直後(0秒)、10秒後、60秒(1分)後、300秒(5分)後の水の接触角を計測した。なお、試験は各試料について2回ずつ行い、その平均を結果とした。結果を後記の表1に示す。
コロイダル・インク社製 銀ナノインク DryCure(ドライキュア) Ag−J
成分:銀粒子−粒径1〜100nm(平均粒径:15nm)
有機π共役系配位子
水を主成分とする溶媒
固形分:10〜20wt%
粘度:5〜1155mPa・s
・紙製として、上記写真用紙a(エプソン社製、厚さ0.3mm)と、写真用紙b(コクヨ社製、厚さ0.3mm)。
・樹脂製として、上記PETフィルムc〔フィルム部分:東レ社製、厚さ0.1mm、表面にインク受容層(17μm厚)をコーティング〕と、PETフィルムd(東洋紡社製、厚さ0.25mm、コーティングなし)。
〔フレキソ印刷機〕
コムラテック社製 SmartLabo−III (登録商標)
〔フレキソ印刷版〕
コムラテック社製 ポリエステル系ゴム製樹脂凸版 タイプ:T−YP400V
版厚さ:2.84mm 600線/inch
硬度:40〜70度(ショアA硬度)
印刷用インク保持部のインク保持量:4ml/m2 (調整幅:1〜5ml/m2 )
なお、印刷版表面には、幅1mmの電子回路パターンのインク保持部が形成されている。
〔アニロックスロール〕
200線/inch(100〜600線/inch)
セル容量(セル容積):8ml/m2 (調整幅:1.5〜50ml/m2 )
・印刷速度(印刷ステージ移動量):18m/分
・アニロックスロール速度:25m/分(周速)
・アニロックスロール−印刷版間 ニップ幅:8mm(調整幅:4〜8mm)
・印刷版−基材間 ニップ幅:10mm(調整幅:8〜12mm)
・印刷チャンバーの環境(雰囲気)
温度:15〜30℃ 湿度:40〜70%RH
・印刷後の乾燥条件
風乾:温度23℃(大気圧下自然乾燥):30秒〜60分
なお、温風を吹き付けて乾燥を促進させる場合は、温風の温度および基材の温度が40℃以下で維持されるように調整した。
上記の加工条件にて、フレキソ印刷機により、基材(写真用紙a)の被印刷面(コート面)の同じ位置に、ナノインク組成物を、1回または3回,6回それぞれ連続して塗布(積層)し、室温(23℃)大気下で60分間放置(風乾)して、基材上に電子回路が印刷(転写)形成された「実施例1」の電子回路基板を得た。
基材として、PETフィルムc(インク受容層をコーティング)を用いたこと以外、上記実施例1と同様にして、フレキソ印刷機により、基材表面の同じ位置に、ナノインク組成物を、1回または3回,6回それぞれ連続して塗布(積層)し、室温(23℃)大気下で60分間放置(風乾)して、「実施例2」の電子回路基板を得た。
基材として、写真用紙b(水の接触角の大きいもの)を用いたこと以外、上記実施例1と同様にして、フレキソ印刷機により、基材表面の同じ位置に、ナノインク組成物を、1回または3回,6回それぞれ連続して塗布(積層)し、室温(23℃)大気下で60分間放置(風乾)して、「比較例1」の電子回路基板を得た。
基材として、PETフィルムd(インク受容層がないもの)を用いたこと以外、上記実施例1と同様にして、フレキソ印刷機により、基材表面の同じ位置に、ナノインク組成物を、1回または3回,6回それぞれ連続して塗布(積層)し、室温(23℃)大気下で60分間放置(風乾)して、「比較例2」の電子回路基板を得た。
基材として、PETフィルムc(インク受容層をコーティング、常用耐熱温度40〜60℃)を用いて、上記実施例2と同様、フレキソ印刷機により、基材表面の同じ位置に、ナノインク組成物を6回連続して塗布(積層)し、基材表面に回路配線を形成するとともに、この電子回路基板を、保持温度を50℃または60℃に設定したオーブン中に60分間入れて、上記回路配線(積層インクパターン:1mm幅)を乾燥させ、「比較例3」の電子回路基板を得た。
目視により、回路配線表面のひび割れや欠け等の欠陥を観察した。評価は、大きな欠陥のあるものを×、表面にひび割れがある程度の欠陥を△、欠陥の見られないものを○、とした。
回路配線パターンの中央付近にあたる同じ位置で、回路配線を基材ごと切断し、断面をマイクロスコープ<日本電子社製 JSM−5500>で観察することにより、回路配線の厚さ(転写されたインクの乾燥後の厚さ:単位μm)を測定した。
回路配線パターンの中央付近にあたる同じ位置で、デジタルテスタ<カスタム社製>を用いて、形成された幅1mmの回路配線の2点間(距離:10mm)の電気抵抗値(単位:Ω)を測定した。
上記「電気抵抗値」試験で導通が確認された電子回路基板を使用して、その回路配線の所定位置(バンプ等)に、導電ペースト(銀銅導電塗料、プラスコート社製、PTP-1202G、銀コート銅+1液型ポリエステル樹脂バインダ、常温乾燥常温硬化 有機溶剤型)を用いて、IC,LED等の電子部品を実装し、電源を接続して、電子回路として動作するかどうかを試作・確認した。結果は、動作するものを○、動作しなかったものを×、で表示する。
2 アニロックスロール
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Claims (5)
- 基材の上に、金属粒子を含有するナノインク組成物からなる所定パターンの電子回路を固定化する電子回路基板の製造方法であって、上記基材として、表面の吸水性を高める処理がなされているものを準備する工程と、表面に所定のパターンのインク保持部が形成されたフレキソ印刷版に、金属粒子を含有するナノインク組成物を保持させる工程と、このフレキソ印刷版に、上記基材の表面を密着させ、上記インク保持部に保持されたナノインク組成物を基材上に転写する工程と、この転写後に、上記転写されたナノインク組成物を大気中40℃以下の環境で乾燥させて固定化させ、所定のパターンの電子回路を形成する工程と、を備え、上記基材の表面が水の滴下直後の接触角が30°以下となるよう設定され、上記ナノインク組成物を基材上に転写する工程が複数設けられており、上記固定化されたナノインク組成物を焼成する工程は経由しないことを特徴とする電子回路基板の製造方法。
- 上記基材が紙または樹脂製フィルムであることを特徴とする請求項1記載の電子回路基板の製造方法。
- 上記基材の表面の吸水性を高める処理が、プラズマ処理、コロナ放電処理、軟X線照射、または紫外線照射であることを特徴とする請求項2記載の電子回路基板の製造方法。
- 上記ナノインク組成物中における金属粒子の含有量が0.1〜20wt%であることを特徴とする請求項1〜3のいずれか一項に記載の電子回路基板の製造方法。
- 上記ナノインク組成物中の金属粒子がナノメーターサイズの銀粒子であることを特徴とする請求項4記載の電子回路基板の製造方法。
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JP2014204612A JP6486053B2 (ja) | 2014-10-03 | 2014-10-03 | 電子回路基板の製造方法 |
TW104128544A TWI716359B (zh) | 2014-10-03 | 2015-08-31 | 電子電路基板之製造方法及依該製造方法得到之電子電路基板 |
KR1020177008486A KR20170066370A (ko) | 2014-10-03 | 2015-08-31 | 전자회로기판의 제조방법 및 이에 의해 얻어진 전자회로기판 |
EP15846149.1A EP3203816A4 (en) | 2014-10-03 | 2015-08-31 | Method for manufacturing electronic circuit substrate, and electronic circuit substrate obtained thereby |
PCT/JP2015/074627 WO2016052043A1 (ja) | 2014-10-03 | 2015-08-31 | 電子回路基板の製造方法およびそれにより得られた電子回路基板 |
CN201580052548.3A CN107079585B (zh) | 2014-10-03 | 2015-08-31 | 电子电路基板的制造方法和利用该制造方法得到的电子电路基板 |
US15/512,236 US20170295651A1 (en) | 2014-10-03 | 2015-08-31 | Method of manufacturing electronic circuit board, and electronic circuit board obtained by same |
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