JP7238712B2 - 配線基板の製造方法および配線基板 - Google Patents
配線基板の製造方法および配線基板 Download PDFInfo
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- JP7238712B2 JP7238712B2 JP2019168980A JP2019168980A JP7238712B2 JP 7238712 B2 JP7238712 B2 JP 7238712B2 JP 2019168980 A JP2019168980 A JP 2019168980A JP 2019168980 A JP2019168980 A JP 2019168980A JP 7238712 B2 JP7238712 B2 JP 7238712B2
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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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
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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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/243—Reinforcing the conductive pattern characterised by selective plating, e.g. for finish plating of pads
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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
- H05K3/10—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
- H05K3/188—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 direct electroplating
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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
- H05K3/388—Improvement of the adhesion between the insulating substrate and the metal by the use of a metallic or inorganic thin film adhesion layer
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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
- 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
- H05K3/20—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 by affixing prefabricated conductor pattern
- H05K3/202—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 by affixing prefabricated conductor pattern using self-supporting metal foil 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
- 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
- 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
- H05K3/182—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 characterised by the patterning method
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/08—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of metallic material
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/028—Electroplating of selected surface areas one side electroplating, e.g. substrate conveyed in a bath with inhibited background plating
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad 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
- H05K3/10—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
- H05K3/108—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 by semi-additive methods; masks therefor
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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
- 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
- H05K3/14—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 spraying techniques to apply the conductive material, e.g. vapour evaporation
- H05K3/16—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 spraying techniques to apply the conductive material, e.g. vapour evaporation by cathodic sputtering
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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
- H05K3/10—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
- H05K3/20—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 by affixing prefabricated conductor pattern
- H05K3/205—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 by affixing prefabricated conductor pattern using a pattern electroplated or electroformed on a metallic carrier
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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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/241—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus
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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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/241—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus
- H05K3/242—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus characterised by using temporary conductors on the printed circuit for electrically connecting areas which are to be electroplated
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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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/245—Reinforcing conductive patterns made by printing techniques or by other techniques for applying conductive pastes, inks or powders; Reinforcing other conductive patterns by such techniques
- H05K3/246—Reinforcing conductive paste, ink or powder patterns by other methods, e.g. by plating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Description
(実施例1)
基材2の材質をガラス、下地層4の材質をWSi2、シード層5の材質を銀、金属層6の材質を銅として、上述した製造方法によって、配線基板1を製造した。具体的には、ガラスからなる基材2の表面にWSi2からなる下地層4をWSi2をターゲットとしてスパッタリング法により形成した。このとき、下地層4の厚みを100nmにした。そして、下地層4の表面に平均粒径50nmの銀ナノ粒子を含有するインクを用いて100nmの厚みを有するシード層5を形成した。このとき、下地層4の表面にインクをスクリーン印刷法により配置し、銀ナノ粒子を120℃の温度で焼結することによって、シード層5を形成した。また、このとき、複数の独立パターン5cを有するように、シード層5を形成した。
下地層4の材質をZrSi2とした。その他の製造方法は、実施例1と同様にした。
下地層4の材質をITOとした。その他の製造方法は、実施例1と同様にした。
下地層4の材質をTiとした。その他の製造方法は、実施例1と同様にした。
下地層4の材質をWCとした。その他の製造方法は、実施例1と同様にした。
(実施例5)
基材2の材質をガラスエポキシ樹脂とし、シード層5の表面5a上の金属層6の厚みT1を10μmとした。その他の製造方法は、実施例1と同様にした。そして、実施例5について、配線層3の断面を観察した。
(実施例6)
シード層5の厚みを300nmにした。その他の製造方法は、実施例1と同様にした。
シード層5の厚みを20nmにした。その他の製造方法は、実施例1と同様にした。
下地層4の厚みを300nmにした。その他の製造方法は、実施例1と同様にした。
下地層4の厚みを20nmにした。その他の製造方法は、実施例1と同様にした。
シード層5の厚みを10nmにした。その他の製造方法は、実施例1と同様にした。
下地層4の厚みを10nmにした。その他の製造方法は、実施例1と同様にした。
基材2の材質をガラスエポキシ樹脂とし、基材2の中心線平均粗さRaを0.1μmとした。その他の製造方法は、実施例1と同様にした。
基材2の中心線平均粗さRaを0.5μmとした。その他の製造方法は、実施例12と同様にした。
基材2の中心線平均粗さRaを1.0μmとした。その他の製造方法は、実施例12と同様にした。
基材2の中心線平均粗さRaを1.2μmとした。その他の製造方法は、実施例12と同様にした。
基材2の材質をガラスエポキシ樹脂とし、基材2の中心線平均粗さRaを0.1μmとした。そして、基材2の表面に、既知のセミアディティブ法を用いて無電解めっきで銅配線を形成した。
基材2の中心線平均粗さRaを0.5μmとした。その他の製造方法は、比較例2と同様にした。
基材2の中心線平均粗さRaを1.0μmとした。その他の製造方法は、比較例2と同様にした。
基材2の中心線平均粗さRaを1.2μmとした。その他の製造方法は、比較例2と同様にした。
下地層4の材質をZrSi2とし、下地層4の厚みを100nmとした。その他の製造方法は、実施例1と同様にした。そして、実施例16について、配線層3を観察した。
Claims (10)
- 絶縁性の基材と、前記絶縁性の基材の表面に設けられた所定の配線パターンの配線層と、を備えた配線基板の製造方法であって、
前記絶縁性の基材の表面に、ZrSi 2 またはWSi 2 から構成される導電性を有する下地層が設けられ、前記下地層の表面に、前記配線パターンに応じた所定パターンの、金属を含有するシード層が設けられたシード層付き基材を準備し、
陽極と陰極である前記シード層との間に固体電解質膜を配置し、前記固体電解質膜を前記シード層および前記下地層に押圧し、前記陽極と前記下地層との間に電圧を印加して、前記固体電解質膜に含有した金属イオンを還元することで、前記シード層の表面に金属層を形成し、
前記下地層のうち前記シード層および前記金属層が形成されていない露出領域を真空プラズマエッチング法により除去することによって、前記絶縁性の基材の表面に、前記下地層、前記シード層および前記金属層により構成される前記配線層を形成することで前記配線基板を製造するものであり、
前記シード層の表面に前記金属層を形成する際において、前記下地層の前記表面の少なくとも前記シード層が形成されていない領域は、酸化物を含んでいることを特徴とする配線基板の製造方法。 - 前記シード層の表面に前記金属層を形成する際において、前記下地層の前記表面の少なくとも前記シード層が形成されていない領域には、前記酸化物からなる自然酸化膜が形成されていることを特徴とする請求項1に記載の配線基板の製造方法。
- 25℃の温度で濃度1mol/Lの硫酸銅溶液を電解液とし、無酸素銅線を対極とし、飽和カロメル電極を参照電極とし、電位掃引速度を10mV/secとして、前記下地層を構成する材料を作用極としたときの第1の分極曲線と前記シード層を構成する前記金属を作用極としたときの第2の分極曲線とを求めた場合、電流密度が0.1mA/cm2での前記第1の分極曲線の電位は、電流密度が0.1mA/cm2での前記第2の分極曲線の電位よりも、0.02V以上高いことを特徴とする請求項1または2に記載の配線基板の製造方法。
- 前記シード層付き基材を準備する際に、
前記絶縁性の基材として、中心線平均粗さRaが1μm以下の表面を有する基材を準備し、
前記絶縁性の基材の前記表面に、スパッタリング法により前記下地層を形成することを特徴とする請求項1~3のいずれか1項に記載の配線基板の製造方法。 - 前記シード層は、ライン/スペースが2μm以上100μm以下/2μm以上100μm以下となるように前記下地層の表面に形成されることを特徴とする請求項4に記載の配線基板の製造方法。
- 前記シード層付き基材を準備する際に、前記下地層の表面に、金属ナノ粒子を含有するインクを配置した後、前記金属ナノ粒子を焼結することにより前記シード層を形成することを特徴とする請求項1~5のいずれか1項に記載の配線基板の製造方法。
- 前記シード層付き基材を準備する際に、前記シード層を、前記所定パターンが互いに離間して配置される複数の独立パターンを有するように前記下地層の表面に形成することを特徴とする請求項1~6のいずれか1項に記載の配線基板の製造方法。
- 絶縁性の基材と、前記絶縁性の基材の表面に設けられた所定の配線パターンの配線層と、を備えた配線基板であって、
前記配線層は、
前記絶縁性の基材の表面に設けられ、ZrSi 2 またはWSi 2 から構成される導電性を有する下地層と、
前記下地層の表面に設けられ、金属を含有するシード層と、
前記シード層の表面に設けられた金属層と、が積層されて構成されており、
前記シード層は、前記シード層の前記表面である積層面から前記下地層に向かって延びる側面を有し、
前記金属層は、前記シード層の前記表面および前記側面を覆うように設けられており、
前記下地層の前記表面の少なくとも前記シード層が形成されていない領域は、酸化物を含んでおり、
前記配線層は、前記シード層の前記表面よりも前記絶縁性の基材に近い部分において、前記絶縁性の基材から遠ざかるに従って先細りとなるテーパ形状に形成されており、前記シード層の前記表面よりも前記絶縁性の基材から遠い部分において、前記絶縁性の基材から遠ざかるに従って先太りとなる逆テーパ形状に形成されており、
前記配線層の前記テーパ形状の部分の幅は、前記配線層の前記逆テーパ形状の部分の幅よりも小さいことを特徴とする配線基板。 - 前記シード層の前記表面上の前記金属層の厚みは、前記側面上の前記金属層の厚みよりも大きいことを特徴とする請求項8に記載の配線基板。
- 前記シード層のライン/スペースは、2μm以上100μm以下/2μm以上100μm以下であることを特徴とする請求項8または9に記載の配線基板。
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BR102020018946A2 (pt) | 2021-10-26 |
RU2740383C1 (ru) | 2021-01-13 |
US11490528B2 (en) | 2022-11-01 |
EP3796762A1 (en) | 2021-03-24 |
PH12020050328A1 (en) | 2021-03-22 |
KR20210033412A (ko) | 2021-03-26 |
US20220304162A1 (en) | 2022-09-22 |
CN112533392A (zh) | 2021-03-19 |
CA3093462A1 (en) | 2021-03-18 |
US20210084774A1 (en) | 2021-03-18 |
KR102361889B1 (ko) | 2022-02-11 |
US12028989B2 (en) | 2024-07-02 |
SG10202009198UA (en) | 2021-04-29 |
TWI758802B (zh) | 2022-03-21 |
MX2020009559A (es) | 2021-03-19 |
TW202114496A (zh) | 2021-04-01 |
JP2021048210A (ja) | 2021-03-25 |
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