JPH01168036A - 半導体素子のボンディング用被覆線 - Google Patents

半導体素子のボンディング用被覆線

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Publication number
JPH01168036A
JPH01168036A JP62328010A JP32801087A JPH01168036A JP H01168036 A JPH01168036 A JP H01168036A JP 62328010 A JP62328010 A JP 62328010A JP 32801087 A JP32801087 A JP 32801087A JP H01168036 A JPH01168036 A JP H01168036A
Authority
JP
Japan
Prior art keywords
wire
coated
thickness
coating
fluororesin
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
Application number
JP62328010A
Other languages
English (en)
Other versions
JP2575163B2 (ja
Inventor
Shinji Shirakawa
白川 信次
Sukehito Iga
祐人 伊賀
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.)
Tanaka Denshi Kogyo KK
Original Assignee
Tanaka Denshi Kogyo KK
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 Tanaka Denshi Kogyo KK filed Critical Tanaka Denshi Kogyo KK
Priority to JP62328010A priority Critical patent/JP2575163B2/ja
Publication of JPH01168036A publication Critical patent/JPH01168036A/ja
Application granted granted Critical
Publication of JP2575163B2 publication Critical patent/JP2575163B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01Means 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
    • H01L24/42Wire connectors; Manufacturing methods related thereto
    • H01L24/43Manufacturing methods
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/43Manufacturing methods
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45117Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 400°C and less than 950°C
    • H01L2224/45124Aluminium (Al) as principal constituent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45138Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
    • H01L2224/45147Copper (Cu) as principal constituent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/4554Coating
    • H01L2224/45565Single coating layer
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/4554Coating
    • H01L2224/45599Material
    • H01L2224/4569Material with a principal constituent of the material being a polymer, e.g. polyester, phenolic based polymer, epoxy
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/00014Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01013Aluminum [Al]
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01029Copper [Cu]

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Wire Bonding (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は半導体素子のチップ電極と外部リードを接続づ
る導線として用いられる被覆mにl111jる。
(従来の技術) 半導体デバイスが高密度化・高集積化するに従い、ボン
ディングワイヤは狭い面積に多数ワイヤボンディングさ
れることになる。その結果、従来から使われているボン
デイングワイIt (例えば金線、アルミニウム線、銅
線等)ではデバイスを樹脂封止するときにボンディング
ワイヤ同士が接触して電気的に短絡しやすくなる。この
ような点を改善するものとして、エナメル被WIIil
やポリウレタン被覆線(特開昭61−19473号)等
がある。また、ボンデイングワイVはその表面に酸化膜
が出来るとボンダビリティ−が悪くなる。
前述の被覆線はアルミニウム線、銅線等、線表面に酸化
膜ができやすいボンディングワイヤに比べてボンダビリ
ティ−を悪化させることがないという利点も合わせ持っ
ている。
(発明が解決しようとする問題点) ところで、斯くの如き利点を右゛するエナメル被覆線や
ポリウレタン被覆線においても次の問題を抱えている。
ボール形成時に樹脂の炭化物が残ったり、キャピラリー
内面との滑りが悪くて詰ったり、異物を発生さUたすす
るなど、被覆樹脂が原因どなるボンダビリティ−の問題
がある。
そこで本発明者は被覆樹脂に注[[シ、■線の酸化防止
と絶縁、■ボールを形成する手段として用いる電気アー
クを利用して積極的に還元性雰囲気をつくって酸化物を
除去する、■炭化物が形成されない、Oa+擦係数が小
さく潤滑性に富む、などの諸特性全てが満たされる被覆
樹脂を検討した。
そして本発明者は、rlJ擦係数が小さくて潤滑性に富
む弗素樹脂に着目し検討した結果、■〜■の各項が満足
されることを突きとめたが、0項の絶縁性の問題が以前
として解決されずに残り、ざらに○第2ボンドで不圧着
を起こすというボンダビリティ−の新たな問題が生じた
本発明者はさらに研究を進め、その結果、0項の絶縁性
の問題は、被覆膜厚が0.5μ未満であると解消されな
いものの、0.5μ以上であれば解決できること、又、
第2ボンドで不圧着を起こすボンダビリティ−の問題は
、被1illi厚が3μを超えると問題を生じるが、3
μ以下であればその不圧着が起らないことを知見し、本
発明を完成したものである。
(問題点を解決するための手段) 本発明は、被覆膜厚が0,5〜3μになるように弗素樹
脂を形成したことを特徴とする。
(実施例) 以下、本発明の実施の一例を詳細に説明する。
被覆線(A)は金属、アルミニウム線、銅線などの金属
線(1)に弗素樹脂からなる被覆111(2)をその膜
厚が0.5〜3μの範囲に形成している。
次に被覆線(A>の製造例を、図面に例示した被覆銅線
の場合で説明する。
高純度銅縮装の金属線(1)を脱脂処理した後、この金
1に線(1)に弗化ビニル塗料をローラコート法により
膜厚が1μとなるようにコーティングし、モしてキユア
リングして、膜厚が1μの弗素樹脂製被111(2>を
有する被覆I18!(A)すなわち被覆銅線を得た。
取去は本発明の被覆線(A)が、優れていることを比較
例工〜Vとの関係で示している。
本発明、被覆膜二弗素樹脂 、膜厚:0.5〜3μI 
、被覆膜:弗素樹脂 、膜厚:0.5μ未満■ 、被覆
膜:弗素樹脂 、膜厚:3μ超■ 、被覆膜:エナメル
樹脂 ■ 、被覆膜:ポリウレタン樹脂 ■ 、裸線 (発明の効果) したがって本発明によれば、次の利点がある。
■絶縁性に優れ、しかも被覆膜自体が積極的に酸化物を
除去する還元性雰囲気をつくり出して酸化膜の発生を抑
止して酸化膜ができす、さらに被覆樹脂の炭化物もなく
、キセピラリー内面との滑りが良くて請りがなく、そし
て第2ボンドで不圧着を起こすこともないところの絶縁
性並びにボンダビリティ−ともに良好である特徴がある
■高密度・高集積化が進んでいる半導体のボンディング
用に有益である。
【図面の簡単な説明】
第1図は本発明被覆線の一実施例を示す正面図。 第2図はII−II線に沿える縦断面図である。 図中 く1)は金属線 (2)は被覆膜

Claims (1)

    【特許請求の範囲】
  1.  被覆膜が弗素樹脂で形成され且つその膜厚が0.5〜
    3μに設定されていることを特徴とする半導体素子のボ
    ンディング用被覆線。
JP62328010A 1987-12-23 1987-12-23 半導体素子のボンディング用被覆線 Expired - Lifetime JP2575163B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62328010A JP2575163B2 (ja) 1987-12-23 1987-12-23 半導体素子のボンディング用被覆線

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62328010A JP2575163B2 (ja) 1987-12-23 1987-12-23 半導体素子のボンディング用被覆線

Publications (2)

Publication Number Publication Date
JPH01168036A true JPH01168036A (ja) 1989-07-03
JP2575163B2 JP2575163B2 (ja) 1997-01-22

Family

ID=18205502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62328010A Expired - Lifetime JP2575163B2 (ja) 1987-12-23 1987-12-23 半導体素子のボンディング用被覆線

Country Status (1)

Country Link
JP (1) JP2575163B2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799749A (en) * 1980-12-12 1982-06-21 Toshiba Corp Semiconductor device
JPS62265735A (ja) * 1986-05-14 1987-11-18 Nec Corp Icパツケ−ジ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799749A (en) * 1980-12-12 1982-06-21 Toshiba Corp Semiconductor device
JPS62265735A (ja) * 1986-05-14 1987-11-18 Nec Corp Icパツケ−ジ

Also Published As

Publication number Publication date
JP2575163B2 (ja) 1997-01-22

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