JP2016139832A - 立体回路基板およびこれに用いるソルダーレジスト組成物 - Google Patents
立体回路基板およびこれに用いるソルダーレジスト組成物 Download PDFInfo
- Publication number
- JP2016139832A JP2016139832A JP2016094047A JP2016094047A JP2016139832A JP 2016139832 A JP2016139832 A JP 2016139832A JP 2016094047 A JP2016094047 A JP 2016094047A JP 2016094047 A JP2016094047 A JP 2016094047A JP 2016139832 A JP2016139832 A JP 2016139832A
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- JP
- Japan
- Prior art keywords
- circuit board
- solder resist
- dimensional
- dimensional circuit
- component mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- H05K3/22—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
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
-
- 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
- H05K1/0284—Details of three-dimensional rigid printed circuit boards
-
- 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
-
- 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
- H05K3/02—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
- H05K3/061—Etching masks
- H05K3/064—Photoresists
-
- 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
- H05K3/105—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 conversion of non-conductive material on or in the support into conductive material, e.g. by using an energy beam
-
- 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
-
- 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
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09018—Rigid curved substrate
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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
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09118—Moulded substrate
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- H—ELECTRICITY
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2072—Anchoring, i.e. one structure gripping into another
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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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0562—Details of resist
- H05K2203/0568—Resist used for applying paste, ink or powder
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- H05K2203/10—Using electric, magnetic and electromagnetic fields; Using laser light
- H05K2203/107—Using laser light
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0014—Shaping of the substrate, e.g. by moulding
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- 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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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3452—Solder masks
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Abstract
Description
前記部品実装部が開口するようにソルダーレジストが形成されてなり、前記部品実装部にはんだにて電子部品が実装されてなることを特徴とするものである。
本発明の立体回路基板は、立体基板上に形成された回路と部品実装部とを備えた立体回路基板である。図1は、本発明の一好適な実施の形態における立体回路基板の概略斜視図であり、図2は、図1の立体回路基板を、A点とB点とを結ぶ線に沿って切断した展開図であり、(a)立体回路基板の外側を、(b)は立体回路基板の内側を表している。図示例においては、本発明の立体回路基板10は、立体基板1上に回路2が形成されており、電子部品が実装される部品実装部3のみが開口するように、立体基板にソルダーレジスト4が形成されており、電子部品がはんだにて部品実装部3に実装される。部品実装部3が開口するようにソルダーレジスト4を形成することで、開口部外部へのはんだの流れや、回路2のショートを防止することができる。特に、本発明の立体回路基板は、図示するように、部品実装部3が曲面部や屈曲部に設けられている場合に好適である。
本発明の立体回路基板は、立体基板を成型した後、この立体基板上に回路を形成し、その後、部品実装部が開口するようにソルダーレジストを形成することにより製造することができる。立体基板の成型材料としては、セラミック等の無機系材料や樹脂を用いた有機系材料が挙げられる。
本発明の立体回路基板は、部品実装部が開口するようにソルダーレジストが形成されている。立体回路基板の表面上にソルダーレジストの形成は、ソルダーレジスト組成物の塗布、乾燥、露光、現像、熱硬化の順で行うことができる。ソルダーレジストの形成に用いるソルダーレジスト組成物としては、樹脂、モノマー、光重合開始剤、熱硬化成分、フィラー等を含有するものを用いることができ、その組成は、目的に応じて適宜設計することができる。
<立体回路基板製造例1>
図1に示す立体回路基板を製造するために、ビクトレックス・エムシー社製VICTREX PEEK 450G903 Blkを射出成型し、回路形成部以外を耐水耐溶剤性マスキングテープでマスクした。回路の密着性を向上させるために、10質量%の硫酸水溶液で洗浄し、ついで1%のシランカップリング剤を含む塩化メチレンで洗浄した。その後、銀フィラー系の常温乾燥タイプの導電性塗料をスプレーにて塗布、乾燥後、マスキングテープを剥し、電解銅めっきを行ない、ニッケル下地の無電解金めっきを施した。
ニッケル下地の無電解金めっきを行なわなかったこと以外は、立体回路基板製造例1と同様の方法で立体回路基板を製造した。
図1に示す立体回路基板を製造するために、樹脂とレーザー応答性非導電性金属錯体を混合し分散させたコンパウンドであるBASF社製Ultramid T 4381 LDSを射出成型し、回路形成部に波長1064nmのレーザー光を照射して、表面を粗化させるとともに非導電金属錯体を金属化した。次いで、電解銅めっきを行ない、ニッケル下地の無電解金めっきを施し、立体回路基板を製造した。
ニッケル下地の無電解金めっきを行なわなかったこと以外は、立体回路基板製造例3と同様の方法で、立体回路基板を製造した。
明和化成社製フェノール樹脂HF−4Mをカルビトールアセテートで溶解したワニス(固形分50%)200質量部に東洋合成社製NQDエステルNT−200(1,2−ナフトキノン−(2)−ジアジド−4−スルホン酸と2,3,4−トリベンゾフェノンのエステル化合物)を20質量部加え、日産化学社製エポキシ化合物TEPIC−Hを10質量部加えた。これを3本ロールにて分散し、スプレー塗布可能な粘度にカルビトールアセテートで希釈した。
温度計、攪拌器、滴下ロート、および還流冷却器を備えたフラスコに、クレゾールノボラック型エポキシ樹脂(エポキシ当量200〜220、軟化点80〜90℃)210gと、溶媒としてのカルビトールアセテート96.4gとを加え、加熱溶解させた。続いて、これに重合禁止剤としてハイドロキノン0.1g、反応触媒としてトリフェニルホスフィン2.0gを加えた。この混合物を95〜105℃に加熱し、アクリル酸72gを徐々に滴下し、酸価が3.0mgKOH/g以下となるまで、約16時間反応させた。この反応生成物を、80〜90℃にまで冷却した後、テトラヒドロフタル酸無水物76.1gを加え、赤外吸光分析により、酸無水物の吸収ピーク(1780cm−1)が無くなるまで、約6時間反応させた。この反応溶液に、出光興産株式会社製の芳香族系溶剤イプゾール#150を96.4g加え、希釈した後取り出した。このようにして得られたカルボキシル基含有の感光性ポリマー溶液は、不揮発分が65重量%、固形物の酸価が78mgKOH/gであった。
立体回路基板製造例1〜4で作製した立体回路基板に、ポジ型ソルダーレジスト組成物の調製で作製したポジ型ソルダーレジスト組成物を、乾燥後の膜厚が5〜10μmになるようにスプレーにて塗布した。これを熱風式乾燥炉で80℃30分間乾燥させて溶剤を揮発させた後、i線を主体とする光源を集光させ、部品実装部に300mJ/cm2の積算光量で露光した。次に、0.3%の水酸化ナトリウム水溶液で現像して露光部のソルダーレジスト組成物を除去した。その後、オーブンで150℃30分間の条件でソルダーレジスト組成物を熱硬化させて、立体回路基板上にソルダーレジストを形成した。
製造例1〜4で作製した立体回路基板に、ネガ型ソルダーレジスト組成物の調製で作製したネガ型ソルダーレジスト組成物を塗布し、熱風式乾燥炉で80℃30分間乾燥させて溶剤を揮発させた後、i線を主体とする光源を集光させ、部品実装部以外に300mJ/cm2の積算光量で露光した。次に1%の炭酸ナトリウム水溶液で現像して未露光部のソルダーレジストを除去した。その後、オーブンで150℃30分間の条件でソルダーレジストを熱硬化させて、ソルダーレジストが形成された立体回路基板が得られた。
立体回路基板製造例1〜4で作製した立体回路基板に、ソルダーレジストの形成を行なわずに上記と同様に電子部品を実装し、立体回路基板4種(比較例1〜4)を作製した。
はんだの流れは、実装部分から配線を伝わってはんだが流れているか否かを、外観を目視することにより評価した。評価基準は10個のすべてのサンプルが実装部分からはんだの流れが無いものを◎、はんだの流れが1〜3個のサンプルに見られたものを○、はんだの流れが4〜9個のサンプルに見られたものを△、全てのサンプルにはんだの流れが見られたものを×とした。結果を表1〜3に示す。
ショートは、実装時に使ったはんだが隣の配線をまたがっているか否かを、外観を目視することにより評価した。評価基準は、10個の全てのサンプルがショートがなかったものを○、1から2個のサンプルにショートがあったものを△、3個以上のサンプルにショートがあったものを×とした。結果を表1〜3に示す。
高温高湿試験は、ショートの無かったサンプルを1個ずつ選択し、85℃、85%RHの環境下で、500時間放置し、配線の変色の程度を目視にて評価した。評価基準は、配線の変色が見られないものを◎、変色は若干のものを○、変色が明らかに確認できるものを△、激しく変色しているものを×とした。結果を表1〜3に示す。
立体回路基板に、HASTの影響がどの程度あるか試験を行なった。立体回路基板製造例4の立体回路基板に、ポジ型ソルダーレジスト組成物によりソルダーレジストを形成して部品実装をしないものを参考例1、ネガ型ソルダーレジスト組成物によりソルダーレジストを形成したものを参考例2、ソルダーレジストを形成しないものを参考例3とした。参考例1〜3の各立体回路基板に10Vの電圧を印加して、120℃、85%RHの環境で試験を行なった。試験開始から100時間後に一度各サンプルを取り出し、マイグレーションの発生を顕微鏡にて観察し、配線の酸化を色の変化を目視することにより評価した。
2 回路
3 部品実装部
4 ソルダーレジスト
10 立体回路基板
Claims (6)
- 立体基板上に形成された回路と部品実装部とを備えた立体回路基板において、
前記部品実装部が開口するようにソルダーレジストが形成されてなり、前記部品実装部にはんだにて電子部品が実装されてなることを特徴とする立体回路基板。 - 前記ソルダーレジストがフォトレジストである請求項1記載の立体回路基板。
- 前記立体基板が樹脂成型品であり、該樹脂成型品に回路が形成されてなる請求項1記載の立体回路基板。
- 前記樹脂成型品が、成型用樹脂に非導電性金属錯体が分散されてなるものであり、前記樹脂成型品成型後にレーザー光線の照射により金属核を生じさせ、その後、めっきが施されて前記回路が形成されてなる請求項3記載の立体回路基板。
- 前記ソルダーレジストがスプレー方式により塗布されたものであり、前記ソルダーレジストの露光が、集光された光源が照射されることにより行われる請求項1〜4のうちいずれか一項記載の立体回路基板。
- 回路と部品実装部とを備え、前記部品実装部が開口し、前記部品実装部に電子部品がはんだにて実装されてなる立体回路基板に用いられることを特徴とするソルダーレジスト組成物。
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KR100772113B1 (ko) * | 2006-09-28 | 2007-11-01 | 주식회사 하이닉스반도체 | 입체 인쇄회로 기판 |
JP4538484B2 (ja) * | 2006-10-24 | 2010-09-08 | 太陽インキ製造株式会社 | 光硬化性熱硬化性樹脂組成物およびそれを用いたプリント配線板 |
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2015
- 2015-01-14 WO PCT/JP2015/050843 patent/WO2015108085A1/ja active Application Filing
- 2015-01-14 KR KR1020167020713A patent/KR102301526B1/ko active IP Right Grant
- 2015-01-14 US US15/108,635 patent/US20160360621A1/en not_active Abandoned
- 2015-01-14 JP JP2015557856A patent/JP6230625B2/ja active Active
- 2015-01-14 EP EP15737145.1A patent/EP3096592B1/en active Active
- 2015-01-14 CN CN201580004618.8A patent/CN105917751B/zh active Active
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Also Published As
Publication number | Publication date |
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EP3096592A4 (en) | 2018-01-17 |
JP6230625B2 (ja) | 2017-11-15 |
JPWO2015108085A1 (ja) | 2017-03-23 |
WO2015108085A1 (ja) | 2015-07-23 |
KR20160108385A (ko) | 2016-09-19 |
CN105917751A (zh) | 2016-08-31 |
EP3096592A1 (en) | 2016-11-23 |
JP6564733B2 (ja) | 2019-08-21 |
KR102301526B1 (ko) | 2021-09-14 |
EP3096592B1 (en) | 2024-09-04 |
CN105917751B (zh) | 2019-03-08 |
US20160360621A1 (en) | 2016-12-08 |
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