JP2011138869A - 多層配線基板の製造方法及び多層配線基板 - Google Patents
多層配線基板の製造方法及び多層配線基板 Download PDFInfo
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Abstract
【解決手段】ビルドアップ工程にて、銅箔55,56を剥離可能な状態で片面に積層配置してなる基材52上に、複数の樹脂絶縁層21〜24及び複数の導体層26を交互に積層して多層化することにより配線積層部30を形成する。穴あけ工程にて、最外層の樹脂絶縁層24に対してレーザー穴加工を施して複数の開口部35,36を形成し、各接続端子41,42を露出させる。その後、デスミア工程にて、開口部35,36内のスミアを除去する。
【選択図】図1
Description
穴あけ工程において、第1主面側接続端子を露出させるとともに、接続端子以外の導体層を露出させるようにしてもよい。具体的には、例えばアライメントマークとして設けた導体層を露出させることにより、配線基板の位置決めを容易に行うことが可能となる。
以下、本発明を多層配線基板に具体化した第1の実施の形態を図面に基づき詳細に説明する。図1は、本実施の形態の多層配線基板の概略構成を示す拡大断面図であり、図2は、その多層配線基板の平面図である。
[第2の実施の形態]
21〜24…樹脂絶縁層
26…導体層
30…積層構造体としての配線積層部
31…第1主面としての上面
32…第2主面としての下面
33…ビア導体
35,36…開口部
41…ICチップ接続端子
42…受動部品接続端子としてのコンデンサ接続端子
45…第2主面側接続端子としての母基板接続端子
46,47…めっき層
52…基材
55…金属箔としての銅箔
Claims (7)
- 同じ樹脂絶縁材料を主体とした複数の樹脂絶縁層及び複数の導体層を交互に積層して多層化した積層構造体を有し、前記積層構造体の第1主面側には複数の第1主面側接続端子が配置され、前記積層構造体の第2主面側には複数の第2主面側接続端子が配置され、前記複数の導体層は、前記複数の樹脂絶縁層に形成され、前記第1主面側または前記第2主面側のいずれかに向うに従って拡径したビア導体により互いに接続されている多層配線基板の製造方法であって、
金属箔を剥離可能な状態で片面に積層配置してなる基材上にて、複数の樹脂絶縁層及び複数の導体層を交互に積層して多層化することにより積層構造体を形成するビルドアップ工程と、
最外層の樹脂絶縁層に対してレーザー穴加工を施すことにより複数の開口部を形成し、前記第1主面側接続端子を露出させる穴あけ工程と、
前記穴あけ工程後、前記開口部内のスミアを除去するデスミア工程と、
前記ビルドアップ工程後、前記基材を除去して前記金属箔を露出させる基材除去工程と
を含むことを特徴とする多層配線基板の製造方法。 - 前記最外層の樹脂絶縁層は、光硬化性を付与していない樹脂絶縁材料の硬化物を主体としたビルドアップ材を用いて形成する
ことを特徴とする請求項1に記載の多層配線基板の製造方法。 - 前記基材除去工程後、前記第1主面の全面を覆うエッチングレジストを設けた状態で前記第2主面側接続端子を形成する接続端子形成工程と、
前記エッチングレジストを除去して前記第1主面側接続端子を露出させるレジスト除去工程と
を含むことを特徴とする請求項1または2に記載の多層配線基板の製造方法。 - 前記基材除去工程後、前記第2主面上にエッチングレジストを設けた状態で前記金属箔をサブトラクティブ法でパターニングすることによって、前記第2主面側接続端子を形成する接続端子形成工程と、
前記接続端子形成工程後に実施される前記穴あけ工程と
を含むことを特徴とする請求項1または2に記載の多層配線基板の製造方法。 - 前記穴あけ工程は、前記第1主面側接続端子を露出させるとともに、接続端子以外の前記導体層を露出させる請求項1乃至4のいずれか1項に記載の多層配線基板の製造方法。
- 同じ樹脂絶縁材料を主体とした複数の樹脂絶縁層及び複数の導体層を交互に積層して多層化した積層構造体を有し、前記積層構造体の第1主面側には複数の第1主面側接続端子が配置され、前記積層構造体の第2主面側には複数の第2主面側接続端子が配置され、前記複数の導体層は、前記複数の樹脂絶縁層に形成され、前記第1主面側または前記第2主面側のいずれかの方向に向うに従って拡径したビア導体により互いに接続されている多層配線基板であって、
前記複数の樹脂絶縁層は、光硬化性を付与していない樹脂絶縁材料の硬化物を主体とした同じビルドアップ材を用いて形成され、
前記積層構造体の前記第1主面側において露出状態にある最外層の樹脂絶縁層には複数の開口部が形成され、
前記第1主面には、接続対象がICチップであるICチップ接続端子及び接続対象が受動部品であり前記ICチップ接続端子よりも面積の大きい受動部品接続端子の2種類が、前記第1主面側接続端子として存在するとともに、前記複数の開口部内には複数の前記ICチップ接続端子が配置されるとともに、前記複数のICチップ接続端子は、上面の高さが前記最外層の樹脂絶縁層の表面よりも低く、かつ、表面側外周部が前記最外層の樹脂絶縁層内に埋まっている
ことを特徴とする多層配線基板。 - 前記受動部品接続端子は、主体をなす銅層の上面及び側面を銅以外のめっき層で覆った構造を有し、前記ICチップ接続端子は、主体をなす銅層の上面のみを銅以外のめっき層で覆った構造を有している
ことを特徴とする請求項6に記載の多層配線基板。
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CN201010623075.7A CN102111968B (zh) | 2009-12-28 | 2010-12-27 | 多层布线基板的制造方法及多层布线基板 |
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US12/979,474 US8707554B2 (en) | 2009-12-28 | 2010-12-28 | Method of manufacturing multilayer wiring substrate |
US14/224,216 US20140202740A1 (en) | 2009-12-28 | 2014-03-25 | Method of Manufacturing Multilayer Wiring Substrate, and Multilayer Wiring Substrate |
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TW201132268A (en) | 2011-09-16 |
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US20110155443A1 (en) | 2011-06-30 |
CN102111968B (zh) | 2014-03-26 |
KR20110076804A (ko) | 2011-07-06 |
US20140202740A1 (en) | 2014-07-24 |
US8707554B2 (en) | 2014-04-29 |
CN102111968A (zh) | 2011-06-29 |
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