JPS5850759A - 樹脂封止形半導体装置 - Google Patents

樹脂封止形半導体装置

Info

Publication number
JPS5850759A
JPS5850759A JP56149160A JP14916081A JPS5850759A JP S5850759 A JPS5850759 A JP S5850759A JP 56149160 A JP56149160 A JP 56149160A JP 14916081 A JP14916081 A JP 14916081A JP S5850759 A JPS5850759 A JP S5850759A
Authority
JP
Japan
Prior art keywords
resin
electrode
metal wire
enclosing
fine metal
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.)
Pending
Application number
JP56149160A
Other languages
English (en)
Inventor
Minoru Toyoda
豊田　實
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56149160A priority Critical patent/JPS5850759A/ja
Publication of JPS5850759A publication Critical patent/JPS5850759A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/495—Lead-frames or other flat leads
    • H01L23/49517—Additional leads
    • H01L23/4952—Additional leads the additional leads being a bump or a wire
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
    • H01L23/293—Organic, e.g. plastic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
    • H01L23/3135—Double encapsulation or coating and encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3157—Partial encapsulation or coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/4554—Coating
    • H01L2224/45565—Single coating layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/4554—Coating
    • H01L2224/45599—Material
    • H01L2224/4569—Material with a principal constituent of the material being a polymer, e.g. polyester, phenolic based polymer, epoxy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting 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
    • H01L2224/48221—Connecting 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
    • H01L2224/48245—Connecting 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 metallic
    • H01L2224/48247—Connecting 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 metallic connecting the wire to a bond pad of the item
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means 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
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484—Connecting portions
    • H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
    • H01L2224/85909—Post-treatment of the connector or wire bonding area
    • H01L2224/8592—Applying permanent coating, e.g. protective coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01005—Boron [B]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01082—Lead [Pb]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (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】 本発明は樹脂封止形半導体装置にかかり、特に半導体チ
ップの電極と外部へ接続するリードフレーム部分とを接
続する金属細線及び該半導体チップの電極の構造に関す
る。
従来の樹脂封止形半導体装置の電極近傍の断面は通常第
１図に示すごとく、半導体基板ｌ及び酸化絶縁膜２並び
に電極３等で構成される半導体チップなリードフレーム
のアイ２ンド部４に搭載し外部接続用リードフレーム５
と前記電極３とを金属細線６で接続し、全体を樹脂７で
封止している。
しかるに第１図で示す構造を有する従来の樹脂封止形半
導体装置は一般にセラ建ツク容器、あるいは金属容器に
組み込まれた半導体装置に比較し耐湿性に劣り、また樹
脂封止の際には流動する樹脂の圧力により金属細線６が
移動し、金属細線６と半導体基板ｌ又はリードフレーム
のアイランド部４、さらには隣接した金属細線６同士等
で短絡事故を生じるという欠点があった。特に耐湿性に
関しては、封止用樹脂７の表面より浸入した水分が金属
細線６と樹脂７との界面を伝わり、電極３に到達し、半
導体チップを破壊に至らしめる現象が従来の樹脂封止形
半導体装置の欠点でありだ。
本発明の目的は前述の欠点を解消し、耐湿性に優れた、
しかも金属線Ｉｉ！６の短絡事故を生じない高品質の樹
脂封止形半導体装置を提供することにある。
本発明による樹脂封止形半導体装置は金属細線の周囲及
び半導体チップの一極の表面が、封止用樹脂とは別種の
、耐湿性に優れ【おり、適当な硬度を保有する樹脂で覆
われた構造を有することを特徴とする。
すなわち本発明は半導体チップを搭載するリードフレー
ム部分と外部へ接続するリードフレーム部分とが設けら
れ前記半導体チップの電極と前記外部へ接続するリード
フレーム部分とが金属細線で接続された樹脂封止形半導
体装置において、該金属細線の周囲及び該半導体チップ
の電極表面が前記封止用樹脂とは別種の樹脂で覆われた
構造を有することを特徴とする樹脂封止形半導体装置で
ある。
次に実施例を用いて本発明の詳細な説明する。
第２図は本発明の実施例にかかる樹脂封止形半導体装置
の電極近傍の断面図である。同図において半導体基１Ｉ
Ｌ１、酸化絶縁膜２、リードフレームのアイランド部４
、外部接続用リードフレーム５、及び封止用樹脂７の構
造は従来の樹脂封止形半導１−置の構造と同一であるが
、電極３の表面及び金属細線６の周囲は例えばポリイミ
ド系樹脂８で覆われた構造を有する。通常金属細線の直
径は、３０μｍ（ζクロン）程度であり、ポリイミド系
樹脂の厚みは本実施例では１μｍ（ミクロン）ないし１
０８ｍ（ミクロン）程度とする。
本実施例による樹脂封止形半導体装置の封止用樹脂７の
表面から水分が浸入した場合の水分の浸入経路は下記の
２種類が考えられ７る。すなわち第１の経路は第２図の
矢印Ａで示すととく封止用封脂７の表面から半導体チッ
プの酸化絶縁膜２へ直接到達する経路であり、第２の経
路は同図の矢印Ｂで示すととく封止用樹脂７０表面から
金属細線６の周囲を覆っているポリイミド系樹脂８の表
面へ到達し、封止用樹脂７とポリイミド系樹脂８との界
面を伝わって半導体チップの酸化絶縁膜２へ到達する経
路である。しかし本実施例においては電極３０表面及び
金属細線６の周囲はいずれもポリイミド系樹！８で覆わ
れている為、浸入した水分は電極３には到達しない。す
なわち従来の樹脂封止形半導体装置における電極部近傍
の水分による破壊とい５欠点は本実施例により解消され
る。
また従来の樹脂封止形半導体の欠点のひとつであった樹
脂封止時の金属細線の短絡事故に関しては、絶縁体であ
り、適当な硬度を有するポリイミド系樹脂で金属細線の
周囲を覆った本実施例により、前記短絡事故は解消され
る。
本実施例ではポリイミド系樹脂の例を提示したが、本発
明の目的を満足すれば、ポリイミド系の樹脂に限らず他
の種類の樹脂を使用することも可能である。
【図面の簡単な説明】
第１図は従来の樹脂封止形半導体装置の電極近傍の断面
図、第２図は本発明の実施例にかかる樹脂封止形半導体
装置の電極近傍の断面図である。 尚、図において、ｌ・・・・・・半導体基板、２・・・
・・・酸化絶縁膜、３・・・・・・電極、４・・・・・
・リードフレームのアイランド部、５・・・・・・外部
接続用リードフレーム、６・・・・・・金属細線、７・
・・・・・封止用樹脂、８・・・・・・ポリイミド系樹
脂、Ａ及びＢ・・・・・・水分の浸入経路、である。

Claims (1)

    【特許請求の範囲】
  1. 半導体チップを搭載するリードフレーム部分と外部へ接
    続するリードフレーム部分とが設けられ前記半導体チッ
    プの電極と前記外部へ接続するリードフレーム部分とが
    金属細線で接続された樹脂封止形半導体装置において、
    少くとも前記金属細線の前記電極の近傍周囲及び前記半
    導体チップの電極表面が前記封止用樹脂とは別種の樹脂
    で覆われ前記半導体チップの他の表面は該封止用樹脂と
    接した構造を有することを特徴とする樹脂封止形半導体
    装置。
JP56149160A 1981-09-21 1981-09-21 樹脂封止形半導体装置 Pending JPS5850759A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56149160A JPS5850759A (ja) 1981-09-21 1981-09-21 樹脂封止形半導体装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56149160A JPS5850759A (ja) 1981-09-21 1981-09-21 樹脂封止形半導体装置

Publications (1)

Publication Number Publication Date
JPS5850759A true JPS5850759A (ja) 1983-03-25

Family

ID=15469096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56149160A Pending JPS5850759A (ja) 1981-09-21 1981-09-21 樹脂封止形半導体装置

Country Status (1)

Country Link
JP (1) JPS5850759A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6107690A (en) * 1995-09-26 2000-08-22 Micron Technology, Inc. Coated semiconductor die/leadframe assembly and method for coating the assembly
EP1739740A2 (en) 2005-06-30 2007-01-03 Hitachi, Ltd. Power semiconductor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131175A (en) * 1974-09-11 1976-03-17 Hitachi Ltd Handotaisochi oyobi sonoseizohoho
JPS52117551A (en) * 1976-03-29 1977-10-03 Mitsubishi Electric Corp Semiconductor device
JPS5372570A (en) * 1976-12-10 1978-06-28 Mitsubishi Electric Corp Manufacture of semiconductor device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131175A (en) * 1974-09-11 1976-03-17 Hitachi Ltd Handotaisochi oyobi sonoseizohoho
JPS52117551A (en) * 1976-03-29 1977-10-03 Mitsubishi Electric Corp Semiconductor device
JPS5372570A (en) * 1976-12-10 1978-06-28 Mitsubishi Electric Corp Manufacture of semiconductor device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6107690A (en) * 1995-09-26 2000-08-22 Micron Technology, Inc. Coated semiconductor die/leadframe assembly and method for coating the assembly
US6445060B1 (en) 1995-09-26 2002-09-03 Micron Technology, Inc. Coated semiconductor die/leadframe assembly and method for coating the assembly
EP1739740A2 (en) 2005-06-30 2007-01-03 Hitachi, Ltd. Power semiconductor
EP1739740A3 (en) * 2005-06-30 2008-04-09 Hitachi, Ltd. Power semiconductor

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