JP2913891B2 - 多層配線基板 - Google Patents

多層配線基板

Info

Publication number
JP2913891B2
JP2913891B2 JP3104327A JP10432791A JP2913891B2 JP 2913891 B2 JP2913891 B2 JP 2913891B2 JP 3104327 A JP3104327 A JP 3104327A JP 10432791 A JP10432791 A JP 10432791A JP 2913891 B2 JP2913891 B2 JP 2913891B2
Authority
JP
Japan
Prior art keywords
wiring board
conductor
multilayer wiring
insulator
support substrate
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.)
Expired - Lifetime
Application number
JP3104327A
Other languages
English (en)
Other versions
JPH04229691A (ja
Inventor
恒夫 濱口
雅信 小原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3104327A priority Critical patent/JP2913891B2/ja
Priority to US07/801,384 priority patent/US5290971A/en
Priority to DE4140010A priority patent/DE4140010A1/de
Publication of JPH04229691A publication Critical patent/JPH04229691A/ja
Application granted granted Critical
Publication of JP2913891B2 publication Critical patent/JP2913891B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/14Structural association of two or more printed circuits
    • H05K1/147Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/12Mountings, e.g. non-detachable insulating substrates
    • H01L23/13Mountings, e.g. non-detachable insulating substrates characterised by the shape
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/12Mountings, e.g. non-detachable insulating substrates
    • H01L23/14Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
    • H01L23/142Metallic substrates having insulating layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • HELECTRICITY
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    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K1/02Details
    • H05K1/11Printed elements for providing electric connections to or between printed circuits
    • H05K1/117Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
    • HELECTRICITY
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    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/14Structural association of two or more printed circuits
    • H05K1/141One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
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    • H01ELECTRIC ELEMENTS
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    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48225Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
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    • H01L2224/42Wire connectors; Manufacturing methods related thereto
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    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484Connecting portions
    • H01L2224/4847Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
    • H01L2224/48472Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
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    • H01L24/42Wire connectors; Manufacturing methods related thereto
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    • H01L24/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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    • H01L2924/11Device type
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    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151Die mounting substrate
    • H01L2924/153Connection portion
    • H01L2924/1531Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
    • H01L2924/15312Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a pin array, e.g. PGA
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    • H01L2924/1904Component type
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    • H05K1/02Details
    • H05K1/0296Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
    • H05K1/0298Multilayer circuits
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    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K1/02Details
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    • H05K1/0306Inorganic insulating substrates, e.g. ceramic, glass
    • HELECTRICITY
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    • H05K1/02Details
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    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/05Insulated conductive substrates, e.g. insulated metal substrate
    • H05K1/056Insulated conductive substrates, e.g. insulated metal substrate the metal substrate being covered by an organic insulating layer
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    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/182Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
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    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/182Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H05K1/183Components mounted in and supported by recessed areas of the printed circuit board
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    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/189Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09145Edge details
    • H05K2201/0919Exposing inner circuit layers or metal planes at the side edge of the printed circuit board [PCB] or at the walls of large holes
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    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
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    • H05K2201/10507Involving several components
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    • H05K2203/30Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
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    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341Surface mounted components
    • H05K3/3431Leadless components
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    • H05K3/46Manufacturing multilayer circuits
    • H05K3/4644Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Combinations Of Printed Boards (AREA)
  • Wire Bonding (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
  • Structure Of Printed Boards (AREA)

Description

【発明の詳細な説明】
【0001】
【産業上の利用分野】この発明は、例えばLSI及び部
品などを高密度・高集積に実装するための多層配線基板
に関するものである。
【0002】
【従来の技術】図5は、「機能回路用セラミック基
板」、第57頁(工業調査会発行,1985年8月10日)や、
「ハイブリッドマイクロエレクトロニクスハンドブッ
ク」、第56頁(工業調査会発行,1989年8月20日)など
に記載されている従来の配線基板を示す断面図である。
図において、31は支持基板、32は配線層、33は第1の導
体、34は絶縁体、35はスルホール、36はピン、37は第2
の導体である。配線層32は第1の導体33と絶縁体34を有
する構成になっている。
【0003】従来の配線基板は上記のように構成され、
その製造方法は基板31上にスルホール35と第2の導体37
が形成される。この基板31上に第1の導体33がめっきあ
るいはスパッタ等の成膜技術により、また、絶縁体34が
写真製版技術とエッチング技術によりそれぞれ形成さ
れ、配線層32を構成する。第1の導体33には例えば銅、
絶縁体34には例えばポリイミドが通常用いられる。第1
の導体33と第2の導体37は電気的に接続されている。次
に、支持基板31にピン36を接合する。第2の導体37はピ
ン36と電気的に接続されている。入出力信号はピン36を
通して配線基板に入出力される。
【0004】
【発明が解決しようとする課題】上記のような従来の多
層配線基板では、ピン36は直径約0.5mm 程度以上あり、
支持基板31面上に多数並べることは困難であるため、配
線基板上に搭載される部品数が制限されることと、ピン
36を一括して支持基板31に接合する上で治具が必要なた
め、それぞれの配線パターンごとに治具を用意しなけれ
ばならないという問題点があった。
【0005】この発明は、かかる問題点を解決するため
になされたものであり、生産性良く多数の入出力端子を
有して高密度実装できる配線基板を得ることを目的とし
ている。
【0006】
【課題を解決するための手段】この発明に係る配線板に
おいては、支持基板、および導体と絶縁体とが積層して
構成され、上記支持基板からその周辺部がはみ出し、そ
のはみ出し部が多層構造を有し、はみ出し部最下層の導
体が露出している多層配線層を備え、支持基板および多
層配線層の断面形状が略U字形状である多層配線基板が
多段積みされ、第一の多層配線基板のはみ出し部最下層
の露出している導体が第二の多層配線基板の露出した配
線層に接続するように構成したものである。
【0007】
【作用】上記のように構成された配線基板では、略断面
U字状の支持基板を有する配線基板を複数個多段積みす
ることにより、配線基板の入出力端子が下方の配線基板
の配線層上面に露出した導体に接続され、配線基板の配
線層上面に露出した導体が上方の配線基板の入出力端子
にそれぞれ接続される。
【0008】
【実施例】実施例1. 図1はこの発明の一実施例による配線基板の製造方法を
工程順に示す断面図である。図において、11は支持基
板、12は支持基板11上に形成された配線層、13は配線層
12を形成している導体、14は同じく配線層12を形成して
いる絶縁体、15は入出力端子となる導体である。
【0009】次に製造方法について説明する。図1
(a)に示すように、支持基板11上に配線層12を形成す
る。配線層12は導体13と絶縁体14からなり、導体13は例
えばめっき又はスパッタ等により形成され、絶縁体14は
写真製版技術とエッチング技術により形成される。この
実施例においては、導体13はめっきで形成した銅を用
い、絶縁体14はポリイミドを用いた。
【0010】次に、支持基板11の周辺部以外即ち中央部
をレジスト等で保護した後、支持基板11の周辺部を例え
ばエッチングで除去する。この後、基板11の周辺部以外
のレジストを除去する。この状態の配線基板を図1
(b)に示す。このエッチングにおいて、支持基板11に
ステンレス鋼を用いた場合は塩化第二鉄と塩酸、アルミ
ナを用いた場合はリン酸、シリコンを用いた場合は硝酸
とフッ化水素酸の混酸を用いればよい。図1(b)の支
持基板11aは除去した部分を点線で示したものである。
【0011】次にこの支持基板除去部11aに対応する部
分の絶縁体14を除去し、入出力端子となる導体15を露出
する。この状態の配線基板を図1(c)に示す。絶縁体
14aは除去した部分を点線で示したものである。絶縁体
14の露出方法としては、例えばエキシマレーザを用いる
ことができる。エキシマレーザはポリイミド等の高分子
材料のみを除去するため、銅等の金属からなる導体15を
容易に露出することができる。また、プラズマアッシャ
ーを用いても容易に導体15を露出することができる。
【0012】このように、導体15はめっき又はスパッタ
等により形成されるので、数十ミクロンまでの微細な大
きさのものを実現でき、さらに導体15を容易に露出して
多数の入出力端子を有する配線基板が形成できる。
【0013】さらに、配線層12を支持基板11からその周
辺部がはみ出るように設け、このはみ出し部に入出力端
子として導体15が露出するような構成でありピンを必要
としないため、周辺部で高精度な結線ができ、配線基板
が薄くできる。
【0014】更に図1(c)に示す状態から支持基板11
を略断面U字状になるように成形する。この状態の配線
基板を図1(d)に示す。
【0015】上記のように構成された配線基板は配線層
12のはみ出し部が可撓性を有しており、図2に示すよう
に折曲した状態で例えばプリント基板16上に搭載され
る。この場合、この図2のように配線層12の上面中央部
に露出した導体には部品17たとえばLSIが実装されて
いる。また、配線基板の内部空間を利用してプリント基
板上に部品18たとえば抵抗、コンデンサ等が実装され
る。
【0016】上記のように構成された配線基板は一例と
して図3に示すように中央部の上面に部品18を実装する
と共に、側片部の外面にも他の部品18を実装して使用で
きるものである。
【0017】この配線基板を例えば図4に示すように2
個多段積みし、これをプリント基板等のマザーボード24
上に搭載して使用できるものである。この場合、上方の
配線基板に形成された一対の入出力端子23が下方の配線
基板の配線層上面に露出した導体21bにそれぞれ電気的
に接続されている。また、上方の配線基板の上面中央部
に露出した導体21aには部品17たとえばLSIが接続さ
れている。そしてまた、各配線基板の内部空間を利用し
て下方の配線基板上の導体21aやプリント基板24上の導
体25に部品18たとえば抵抗、コンデンサ等が接続されて
いる。
【0018】なお、上記各実施例では、導体として銅、
絶縁体としてポリイミドを用いたが、導体としてアルミ
ニウム、金等でもよいし、絶縁体としてベンゾシクロブ
テン等を用いてよい。さらに、配線層の製造方法は一般
にさまざまな方法があり、上記実施例に限定されるもの
ではない。
【0019】
【発明の効果】以上のように、この発明によれば支持基
板、及び導体と絶縁体とを有し、支持基板からその周辺
部がはみ出るように設けた配線層を備え、配線層のはみ
出し部に入出力端子として導体が露出するように構成
し、略断面U字状の支持基板を有する配線基板を複数個
多段積みすることにより、部品の立体実装が可能となり
高密度実装できると共に、放熱効果の優れた配線基板を
得ることができる。
【図面の簡単な説明】
【図1】 この発明の実施例1を工程順に示す断面図で
ある。
【図2】 この発明による配線基板の使用状態を示す断
面図である。
【図3】 この発明による配線基板の状態を示す斜視図
である。
【図4】 この発明による配線基板の使用状態を示す斜
視図である。
【図5】 従来の配線基板を示す断面図である。
【符号の説明】
11 支持基板、 12 配線層、 13 導体、 14 絶縁
体、 15 入出力端子、 19 支持基板、 20 配線
層、 21 導体、 22 絶縁体、 23 入出力端子
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI H05K 3/46 H01L 23/12 N (56)参考文献 特開 昭62−7192(JP,A) 特開 昭62−24684(JP,A) 実開 昭52−92246(JP,U) 実開 平1−93757(JP,U) 実開 昭62−116589(JP,U) (58)調査した分野(Int.Cl.6,DB名) H05K 1/02 H05K 1/11 H05K 1/14 H05K 3/46 H01L 23/12 H01L 25/00

Claims (1)

    (57)【特許請求の範囲】
  1. 【請求項1】 支持基板、および導体と絶縁体とが積層
    して構成され、上記支持基板からその周辺部がはみ出
    し、そのはみ出し部が多層構造を有し、はみ出し部最下
    層の導体が露出している多層配線層を備え、支持基板お
    よび多層配線層の断面形状が略U字形状である多層配線
    基板が多段積みされ、第一の多層配線基板のはみ出し部
    最下層の露出している導体が第二の多層配線基板の露出
    した配線層に接続されていることを特徴とする多層配線
    基板。
JP3104327A 1990-12-04 1991-05-09 多層配線基板 Expired - Lifetime JP2913891B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3104327A JP2913891B2 (ja) 1990-12-04 1991-05-09 多層配線基板
US07/801,384 US5290971A (en) 1990-12-04 1991-12-02 Printed circuit board provided with a higher density of terminals for hybrid integrated circuit and method of fabricating the same
DE4140010A DE4140010A1 (de) 1990-12-04 1991-12-04 Leiterplatte und verfahren zu ihrer herstellung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2-400353 1990-12-04
JP40035390 1990-12-04
JP3104327A JP2913891B2 (ja) 1990-12-04 1991-05-09 多層配線基板

Publications (2)

Publication Number Publication Date
JPH04229691A JPH04229691A (ja) 1992-08-19
JP2913891B2 true JP2913891B2 (ja) 1999-06-28

Family

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Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
US (1) US5290971A (ja)
JP (1) JP2913891B2 (ja)
DE (1) DE4140010A1 (ja)

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Also Published As

Publication number Publication date
DE4140010A1 (de) 1992-06-11
US5290971A (en) 1994-03-01
JPH04229691A (ja) 1992-08-19

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