JP6129786B2 - 前駆基板の製造方法、フレキシブルプリント配線基板の製造方法及び前駆基板 - Google Patents
前駆基板の製造方法、フレキシブルプリント配線基板の製造方法及び前駆基板 Download PDFInfo
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- JP6129786B2 JP6129786B2 JP2014146717A JP2014146717A JP6129786B2 JP 6129786 B2 JP6129786 B2 JP 6129786B2 JP 2014146717 A JP2014146717 A JP 2014146717A JP 2014146717 A JP2014146717 A JP 2014146717A JP 6129786 B2 JP6129786 B2 JP 6129786B2
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Classifications
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- H—ELECTRICITY
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- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
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- H—ELECTRICITY
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
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- 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
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- H05K1/0326—Organic insulating material consisting of one material containing O
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- 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
- H05K1/03—Use of materials for the substrate
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- H05K1/0346—Organic insulating material consisting of one material containing N
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- 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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
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- 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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
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- 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
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
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- 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
- H05K3/18—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 precipitation techniques to apply the conductive material
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- 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
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- H—ELECTRICITY
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- 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
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- H05K3/42—Plated through-holes or plated via connections
- H05K3/425—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
- H05K3/426—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern initial plating of through-holes in substrates without metal
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- 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
- H05K3/46—Manufacturing multilayer circuits
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- 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
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- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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- H—ELECTRICITY
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- 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
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- H05K2201/0338—Layered conductor, e.g. layered metal substrate, layered finish layer or layered thin film adhesion layer
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- 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]
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- 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
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- H05K3/18—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 precipitation techniques to apply the conductive material
- H05K3/181—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 precipitation techniques to apply the conductive material by electroless plating
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- 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
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/381—Improvement of the adhesion between the insulating substrate and the metal by special treatment of the substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
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Description
図1Aは、本発明に係るフレキシブルプリント配線基板の製造方法の工程フロー図を示す。図2Aに係るフレキシブルプリント配線基板の断面構造の変化の模式図に示すように、本発明は、まず、以下の工程を含むフレキシブルプリント配線基板の製造方法を提供する。表面11を有する基板10を用意する(ステップS101)。基板10の表面11は、上表面111と下表面112を含む。原材料としての基板10の材料は、ポリイミド(Polyimide、PI)、ポリエチレンテレフタレートポリエステル(Polyethylene Terephthalate Polyester、PET)、ポリエチレンナフタレート(Polyethylene Naphthalate、PEN)、ポリテトラフルオロエチレン(Polytetrafluoroethylene、PTFE)、液晶高分子(Liquid Crystal Polymer、LCP)、エポキシ樹脂(Epoxy)及びアラミド(Aramid)等の材料からなる群から選ばれる少なくとも1つである若しくは複数種類の高分子重合物であってもよい。次に、図2Bに示すように、必要に応じてレーザ加工により、基板10に対して上表面111及び下表面112に連通する導通孔12を穿設する。導通孔12の周囲は、孔壁113により囲まれる。孔壁113は、上表面111又は下表面112からさらに導通孔12へ延在してなるものである。従って、広義的に言えば、孔壁113も、基板10の表面11の範囲に含まれる。また、レーザードリル加工された基板10に対してプラズマ洗浄を行うことにより、レーザ加工後に伴って基板10に生じた屑を除去することができる。
言い換えれば、第1の実施形態に示すフレキシブルプリント配線基板の製造方法によれば、図1Aを併せて参照すると、ステップS101〜ステップS107において、前駆基板の製造方法も提供されている。従って、ステップS101〜ステップS107に基づいて図2A〜図2Eを併せて参照すると、本発明は、前駆基板の製造方法が提供されている。当然ながら、前駆基板に対して触媒層を形成する工程は、上記の導電化フロー工程をも含む。基板10、導電層30、及び金属層40の材料は、上述した第1の実施形態に記載されているため、詳しい説明を省略する。しかしながら、好ましい状況下で、注意すべき点は、導電層30に適用される金属材料には、ニッケルのような酸化されやすい金属材料が用いられる場合、本発明にさらに含まれる金属層40の電気メッキ工程において、この金属層40は、銅、又は銅よりも酸化電位が低い金属であるのが好ましい。これらの金属は、良好な導電性を提供するのみならず、外部環境、例えば空気、湿気によって酸化しにくい利点を有するため、内部の導電層30を保護するとともに、導電層30を酸化から回避することができる。また、前駆基板という半製品を適当かつ長期的に保存することができる。
11 表面
111 上表面
112 下表面
113 孔壁
12 導通孔
20 触媒層
20' 触媒層
30 導電層
30' 導電層
40 金属層
40' 金属層
50 耐めっきフォトレジスト
50'、50" 残余の耐めっきフォトレジスト
A 遮蔽領域
B 無遮蔽領域
E1 積層ユニット
E2 積層ユニット
P 前駆基板
Claims (13)
- 基板を用意する工程と、
前記基板に、前記基板の上表面及び下表面に連通する導通孔を穿設する工程と、
前記基板の前記上表面、前記下表面及び前記導通孔の孔壁を含む表面に触媒層を形成する工程と、
前記触媒層と結合する厚さが50nm以上200nm以下である導電層を形成することにより、前記導電層を前記触媒層の表面に固着する工程と、
厚さ1μm以上18μm以下の金属層を前記導電層に全面的にメッキし、前記導通孔を埋めることにより、前駆基板を形成する工程と
を少なくとも含み、
前記基板の前記上表面、前記下表面及び前記導通孔の孔壁を含む表面に触媒層を形成する工程は、前記基板の表面に対する脱脂工程、前記脱脂工程の後に行われる酸塩基変性工程及び前記酸塩基変性工程の後に行われる触媒化工程を少なくとも含む導電化フロー工程を含み、
前記酸塩基変性工程では、pH値7.5〜8.5である弱アルカリにより、前記基板の表面に対して洗浄を行う
ことを特徴とする前駆基板の製造方法。 - 前記導電化フロー工程は、さらに、前記酸塩基変性工程の後、かつ前記触媒化工程の前に行われる前記基板の表面に対して粗化を行う工程を含む
ことを特徴とする請求項1に記載の前駆基板の製造方法。 - 前記基板の表面に対して粗化を行う工程は化学的粗化工程であり、
前記化学的粗化工程は、化学試薬で前記基板の表面に対して、侵蝕又は分子内開環により粗化を行う工程を含む
ことを特徴とする請求項2に記載の前駆基板の製造方法。 - 前記基板の表面に対して粗化を行う工程は物理的粗化工程であり、
前記物理的粗化工程は、前記基板の表面に対して機械的に粗化を行う工程を含む
ことを特徴とする請求項2に記載の前駆基板の製造方法。 - 前記基板の材料は、ポリイミド、ポリエチレンテレフタレートポリエステル、ポリエチレンナフタレート、ポリテトラフルオロエチレン、液晶高分子、エポキシ樹脂及びアラミドからなる群から選ばれる少なくとも1つである
ことを特徴とする請求項1乃至4のいずれか1項に記載の前駆基板の製造方法。 - 前記触媒はパラジウムである
ことを特徴とする請求項5に記載の前駆基板の製造方法。 - 前記触媒はパラジウムである
ことを特徴とする請求項1乃至4のいずれか1項に記載の前駆基板の製造方法。 - 基板を用意する工程と、
前記基板に、前記基板の上表面及び下表面に連通する導通孔を穿設する工程と、
前記基板の前記上表面、前記下表面及び前記導通孔の孔壁を含む表面に触媒層を形成する工程と、
前記触媒層と結合する厚さが50nm以上200nm以下である導電層を形成することにより、前記導電層を前記触媒層の表面に固着する工程と、
厚さ1μm以上18μm以下の金属層を前記導電層の表面に全面的にメッキし、前記導通孔を埋める工程と、
耐めっきフォトレジストを前記金属層に設ける工程と、
プリント回路レイアウトパターンに応じて前記耐めっきフォトレジストに対して露光及び現像を行うことで、前記金属層を部分的に露出させるように前記耐めっきフォトレジストを部分的に除去するとともに、残余の耐めっきフォトレジストを残す工程と、
エッチング工程を行うことで、露出した前記金属層、及び露出した金属層の下の導電層及び前記触媒層を除去する工程と、
前記残余の耐めっきフォトレジストを除去する工程と
を少なくとも含み、
前記基板の前記上表面、前記下表面及び前記導通孔の孔壁を含む表面に触媒層を形成する工程は、前記基板の表面に対する脱脂工程、前記脱脂工程の後に行われる酸塩基変性工程及び前記酸塩基変性工程の後に行われる触媒化工程を少なくとも含む導電化フロー工程を含み、
前記酸塩基変性工程は、pH値7.5〜8.5である弱アルカリにより、前記基板の表面に対して洗浄を行う
ことを特徴とするフレキシブルプリント配線基板の製造方法。 - 前記導電化フロー工程は、さらに、前記酸塩基変性工程の後、かつ前記触媒化工程の前に行われる前記基板の表面に対して粗化を行う工程を含む
ことを特徴とする請求項8に記載のフレキシブルプリント配線基板の製造方法。 - 前記基板の表面に対して粗化を行う工程は化学的粗化工程であり、
前記化学的粗化工程は、化学試薬で前記基板の表面に対して、侵蝕又は分子内開環により粗化を行う工程を含む
ことを特徴とする請求項9に記載のフレキシブルプリント配線基板の製造方法。 - 前記基板の表面に対して粗化を行う工程は物理的粗化工程であり、
前記物理的粗化工程は、前記基板の表面に対して機械的に粗化を行う工程を含む
ことを特徴とする請求項9に記載のフレキシブルプリント配線基板の製造方法。 - 前記基板の材料は、ポリイミド、ポリエチレンテレフタレートポリエステル、ポリエチレンナフタレート、ポリテトラフルオロエチレン、液晶高分子、エポキシ樹脂及びアラミドからなる群から選ばれる少なくとも1つである
ことを特徴とする請求項8乃至11のいずれか1項に記載のフレキシブルプリント配線基板の製造方法。 - 前記触媒はパラジウムである
ことを特徴とする請求項12に記載のフレキシブルプリント配線基板の製造方法。
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| TW102125524A TW201505493A (zh) | 2013-07-17 | 2013-07-17 | 前驅基板、軟性印刷電路板的製造方法及前驅基板 |
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| CN106567058B (zh) * | 2015-10-09 | 2019-03-19 | 凯基有限公司 | 无铬环保镀金属膜结构系统 |
| US9872399B1 (en) | 2016-07-22 | 2018-01-16 | International Business Machines Corporation | Implementing backdrilling elimination utilizing anti-electroplate coating |
| US20190029122A1 (en) * | 2017-07-19 | 2019-01-24 | Anaren, Inc. | Encapsulation of circuit trace |
| JP7375294B2 (ja) * | 2017-07-28 | 2023-11-08 | Tdk株式会社 | 導電性基板、電子装置及び表示装置の製造方法 |
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| US5066545A (en) * | 1987-02-24 | 1991-11-19 | Polyonics Corporation | Process for forming polyimide-metal laminates |
| US5178914A (en) | 1990-10-30 | 1993-01-12 | International Business Machines Corp. | Means of seeding and metallizing polymide |
| JPH0621157A (ja) | 1991-10-01 | 1994-01-28 | Sumitomo Metal Mining Co Ltd | 銅 ポ リ イ ミ ド 基 板 の 製 造 方 法 |
| KR100328807B1 (ko) * | 1998-05-08 | 2002-03-14 | 가네코 히사시 | 제조비용이 저렴하고 충분한 접착 강도가 수득될 수 있는 수지구조물 및 이의 제조 방법 |
| JP2001181852A (ja) * | 1999-12-22 | 2001-07-03 | Sumitomo Metal Mining Co Ltd | 配線基板の無電解メッキ方法 |
| JP2002053971A (ja) * | 2000-08-03 | 2002-02-19 | Sony Corp | めっき方法及びめっき構造、並びに半導体装置の製造方法及び半導体装置 |
| SG107593A1 (en) | 2002-06-04 | 2004-12-29 | Agency Science Tech & Res | Method for electroless metalisation of polymer substrate |
| US20050238812A1 (en) * | 2002-06-04 | 2005-10-27 | Bhangale Sunil M | Method for electroless metalisation of polymer substrate |
| JP3923389B2 (ja) * | 2002-08-08 | 2007-05-30 | 新光電気工業株式会社 | めっき装置及び配線基板の製造方法 |
| JP2005294700A (ja) | 2004-04-02 | 2005-10-20 | Tokai Rubber Ind Ltd | フレキシブルプリント基板の製法 |
| KR100688864B1 (ko) * | 2005-02-25 | 2007-03-02 | 삼성전기주식회사 | 인쇄회로기판, 플립칩 볼 그리드 어레이 기판 및 그 제조방법 |
| JP2007165634A (ja) | 2005-12-14 | 2007-06-28 | Fujitsu Ltd | 配線基板の製造方法 |
| JP2011014801A (ja) | 2009-07-03 | 2011-01-20 | Mitsui Mining & Smelting Co Ltd | フレキシブル銅張積層板及びcof用フレキシブルプリント配線板並びにこれらの製造方法 |
| TW201322835A (zh) * | 2011-11-28 | 2013-06-01 | Taiwan Green Point Entpr Co | 導電線路的製備方法及具有導電線路的基材 |
| JP6114527B2 (ja) * | 2012-10-05 | 2017-04-12 | 新光電気工業株式会社 | 配線基板及びその製造方法 |
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| KR20150009930A (ko) | 2015-01-27 |
| TW201505493A (zh) | 2015-02-01 |
| KR101598500B1 (ko) | 2016-02-29 |
| CN104302121A (zh) | 2015-01-21 |
| US9386709B2 (en) | 2016-07-05 |
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