JP3771843B2 - 導電性接着フィルムを用いるパワー半導体ダイの接着方法 - Google Patents

導電性接着フィルムを用いるパワー半導体ダイの接着方法 Download PDF

Info

Publication number
JP3771843B2
JP3771843B2 JP2001540836A JP2001540836A JP3771843B2 JP 3771843 B2 JP3771843 B2 JP 3771843B2 JP 2001540836 A JP2001540836 A JP 2001540836A JP 2001540836 A JP2001540836 A JP 2001540836A JP 3771843 B2 JP3771843 B2 JP 3771843B2
Authority
JP
Japan
Prior art keywords
substrate
semiconductor die
film
die
area
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 - Fee Related
Application number
JP2001540836A
Other languages
English (en)
Other versions
JP2003515929A (ja
Inventor
パビエール マーク
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.)
Infineon Technologies Americas Corp
Original Assignee
International Rectifier Corp USA
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 International Rectifier Corp USA filed Critical International Rectifier Corp USA
Publication of JP2003515929A publication Critical patent/JP2003515929A/ja
Application granted granted Critical
Publication of JP3771843B2 publication Critical patent/JP3771843B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • H01L24/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L24/27Manufacturing methods
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/683Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L21/6835Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L21/6836Wafer tapes, e.g. grinding or dicing support tapes
    • 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
    • H01L24/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L24/28Structure, shape, material or disposition of the layer connectors prior to the connecting process
    • H01L24/29Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
    • 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
    • H01L24/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L24/83Methods 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 layer connector
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
    • H01L2221/67Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
    • H01L2221/683Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L2221/68304Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L2221/68327Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
    • 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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/27Manufacturing methods
    • H01L2224/274Manufacturing methods by blanket deposition of the material of the layer 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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/28Structure, shape, material or disposition of the layer connectors prior to the connecting process
    • H01L2224/29Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
    • H01L2224/29001Core members of the layer connector
    • H01L2224/29099Material
    • H01L2224/291Material 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
    • H01L2224/29101Material 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 less than 400°C
    • 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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/28Structure, shape, material or disposition of the layer connectors prior to the connecting process
    • H01L2224/29Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
    • H01L2224/29001Core members of the layer connector
    • H01L2224/29099Material
    • H01L2224/2919Material 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
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83Methods 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 layer connector
    • H01L2224/8319Arrangement of the layer connectors prior to mounting
    • H01L2224/83191Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on the semiconductor or solid-state body
    • 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
    • H01L2224/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83Methods 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 layer connector
    • H01L2224/838Bonding techniques
    • H01L2224/8385Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
    • H01L2224/83855Hardening the adhesive by curing, i.e. thermosetting
    • 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
    • H01L2224/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83Methods 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 layer connector
    • H01L2224/838Bonding techniques
    • H01L2224/8385Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
    • H01L2224/83855Hardening the adhesive by curing, i.e. thermosetting
    • H01L2224/83856Pre-cured adhesive, i.e. B-stage adhesive
    • 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
    • H01L2924/01004Beryllium [Be]
    • 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
    • H01L2924/01006Carbon [C]
    • 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
    • H01L2924/01015Phosphorus [P]
    • 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
    • H01L2924/01033Arsenic [As]
    • 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
    • H01L2924/01074Tungsten [W]
    • 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
    • H01L2924/01075Rhenium [Re]
    • 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
    • H01L2924/01079Gold [Au]
    • 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
    • H01L2924/01082Lead [Pb]
    • 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
    • H01L2924/013Alloys
    • H01L2924/014Solder alloys
    • 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
    • H01L2924/06Polymers
    • H01L2924/0665Epoxy resin
    • 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
    • H01L2924/06Polymers
    • H01L2924/078Adhesive characteristics other than chemical
    • H01L2924/07802Adhesive characteristics other than chemical not being an ohmic electrical conductor
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/12Passive devices, e.g. 2 terminal devices
    • H01L2924/1203Rectifying Diode
    • H01L2924/12032Schottky diode
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/13Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304Transistor
    • H01L2924/1305Bipolar Junction Transistor [BJT]
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/13Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304Transistor
    • H01L2924/1305Bipolar Junction Transistor [BJT]
    • H01L2924/13055Insulated gate bipolar transistor [IGBT]
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/13Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304Transistor
    • H01L2924/1306Field-effect transistor [FET]
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/13Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304Transistor
    • H01L2924/1306Field-effect transistor [FET]
    • H01L2924/13091Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
    • 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
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/14Integrated circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Die Bonding (AREA)

Description

【0001】
(発明の背景)
本発明は、半導体デバイスに関するものであり、より詳しくは、伝熱性および/または導電性の基板にパワー半導体ダイ(power semiconductor die)を接着させるための新規な方法に関する。
【0002】
ダイオード、MOSFET、IGBTなどのパワー半導体ダイは、通常は、エポキシ樹脂、熱可塑性樹脂、半田などの導電性材料によって、または電気的分離が所望ならば、電気絶縁性材料によって、導電性のリードフレームまたは他の基板に付着される。この方法は、ウェーハからダイをシンギュレーション(singulation)した後に、個々のダイに関して順々に行われるので時間が掛かる。
【0003】
(発明の簡単な説明)
本発明によれば、導電性または電気絶縁性であることができる接着フィルムを、パワー半導体のためのダイ付着材料として用いる。更に、そのような接着フィルムは、ダイシンギュレーション段階前に、パワー半導体ウェーハに付着させる。
【0004】
次に、接着フィルムを用いて、低電力集積回路をリードフレームにボンディングする。本発明によれば、導電性または電気絶縁性の接着フィルムを用いて、パワー半導体を、基板/リードフレームにボンディングする。
【0005】
従来技術における接着フィルムは、プレカットされ、フィルム上にダイを配置する前に基板上に配置される。次に、得られた基板/フィルム/ダイアセンブリは、ダイ/リードフレーム間の接着を向上させるために部分的に熱処理される。本発明によれば、接着フィルムは、ダイシンギュレーション段階前に、パワー半導体ウェーハ上に配置する。次に、ウェーハ/接着フィルムのスタックを、従来のシンギュレーション法を用いて切り分けて、接着フィルムを予め付着したダイを製作する。次に、熱処理により接着剤を再活性化させて、ボンディングを促進し、硬化を完了させる前に、切り分けたダイ/フィルムのスタックを基板/リードフレーム上に配置する。
【0006】
いくつかの利点が本発明によって提供される。すなわち、従来のパワー半導体ダイの付着では、エポキシ樹脂タイプまたは半田タイプの接着剤をペーストまたは液体の形態で使用する。これらの材料は、しばしば、ダイボンディング中に、ダイの縁から基板/リードフレーム上にこぼれる。このこぼれにより、リードフレーム/基板上に配置できるダイのサイズが限定される。接着フィルムを用いることによって、そのようなこぼれがなくなる。その結果、所与のサイズのパッケージ中により大きなダイを配置することができる。ボンド線(bond line)の厚さも、接着フィルムの厚さによって設定され、一定となる。接着剤層中にはボイドも存在しなくなる。
【0007】
ダイシンギュレーション前に、導電性または(電気絶縁性)接着フィルムを、パワー半導体ウェーハ上に予めボンディングすると、組立て中の余計なピックアンドプレイス段階も不要となる。したがって、製造装置のコストが下がり、サイクル時間が短くなる。
【0008】
(発明の実施形態の詳細な説明)
図1および図2は、従来技術のパワー半導体ダイ10と、半田またはエポキシ樹脂の付着材料12によってダイが付着される導電性基板11を示している。従来法では、材料12がこぼれ、それにより、所与の面積の基板上におけるダイの最大サイズが限定されることに留意されたい。
【0009】
図3および図4は、図1および図2のダイ10を示しており、薄くて柔軟な接着フィルム13を用いてダイ10および基板11をボンディングしている。フィルム13は、導電性であるか、または絶縁性であることができ、熱硬化可能である。図3および図4で見られるように、このようなフィルムを用いると、こぼれがなくなるので、図1および図2の基板と同じ面積の基板11上で、より大きな面積のダイ10が可能になる。
【0010】
本発明の新規な方法は、図5から図8に示してある。図5は、従来の方法で同時に加工される多数の同一のパワー半導体ダイを含む半導体デバイスウェーハ21を示している。したがって、ウェーハは、導電性ソース電極および底部導電性ドレイン電極によって従来通り覆われた頂部表面にP/N接合を有する何百もの同一の縦型導電パワーMOSFETダイを含むことができる。ウェーハのダイは、従来の切り分け装置(sawing apparatus)でウェーハを切り分けることによって、シンギュレーションされる。次に、ダイのドレイン電極を基板に半田付けまたはエポキシボンディングすることによって、個々のダイをリードフレームまたは他の基板上に装着する。
【0011】
本発明によれば、接着フィルム20を、約6インチ(15.24cm)の典型的な直径を有することができるウェーハのサイズに切り分ける。
【0012】
フィルム20は、好ましくは、ポリイミドフィルム、例えばPCボードや「フレックス」回路で電気巻線絶縁(electrical winding insulation)など用にしばしば用いられる「KAPTON」(登録商標)フィルムとして公知のポリイミドフィルムである。Kapton(登録商標)ポリイミドは優れた絶縁体である。次に、ウェーハ21およびフィルム20を互いに積層し、予熱して接着力を向上させるが、フィルム20は、完全には硬化させない。
【0013】
次に、図6に概略を示してあるように、フィルム20およびウェーハ21を同時に切り代22で切り分けて、別個のダイにする。従来のフレームまたは基板では、分離したフィルム/ダイのスタックを適所に保持する。次に、シンギュレーションされたデバイスが、自動的に取り上げられ、加熱された各リードフレームまたは基板上の装着すべき場所に運ばれるように、従来のピックアンドプレイスデバイス(pick and place device)中にスタックを配置する。
【0014】
すなわち、図7に示してあるように、従来のピックアンドプレイス装置によって、ダイ/フィルムのスタック21/20を取り上げ、各基板11上に配置することができる。好ましくは、圧力を加えて、予熱された基板11の表面上にスタック21/20を押し付ける。
【0015】
次に、ダイ/フィルムのスタック21/20と基板11を約260℃まで加熱して、フィルム21を完全に熱硬化させ、基板11に対するボンドを形成させる。
【0016】
図7および図8のような構造化を行って、ダイオンダイパッケージ(die−on−die package)(図9)またはサイドバイサイドダイパッケージ(side−by−side die package)(図10)を形成することもできる。すなわち、図9では、接着剤層20と半導体ダイ21とを有する2つの同一のダイ30および31を、ダイ30の上にダイ31を重ねて実装することができる。ダイ30および31は、それぞれ、多種多様なデバイス、例えばMOSFETおよびショットキーダイオードであってもよく、異なるサイズまたは面積であってもよい。あるいは、ダイ31は集積回路であってもよい。
【0017】
さらに、図9における層20は、ダイ30と31とを背面(back−to−back)接続させることのできる、適当な導電性接着フィルムとすることができる。
【0018】
図10に示してあるように、ダイ30および31は、それぞれMOSFETおよびIC(ダイ21)を含んでいてもよい。
【0019】
フィルム20用に使用できる他のフィルムとしては、Alpha Metals 383G(RHS)やUH2W−Eポリイミドフィルム(LHS)などの熱可塑性接着剤ペーストが挙げられる。
【0020】
本発明を、その特定の実施形態に関して説明したが、他の多くの変形形態および改良および他の使用法も当業者には明らかとなるであろう。したがって、本発明は本明細書における具体的な開示によってではなく、添付の特許請求の範囲によってのみ限定されることが好ましい。
【図面の簡単な説明】
【図1】 従来技術のダイ接着の上面図である。
【図2】 従来技術のダイ接着の側面図である。
【図3】 導電性接着フィルムによって基板に接着されたパワー半導体ダイの上面図である。
【図4】 導電性接着フィルムによって基板に接着されたパワー半導体ダイの側面図である。
【図5】 大面積接着フィルムおよび半導体デバイスウェーハのシンギュレーション前の透視図である。
【図6】 接着後の図5の透視図である。
【図7】 基板に接着する前の図6のアセンブリからシンギュレーションされた1つのダイ/フィルムスタックを示す図である。
【図8】 熱硬化およびボンディング後の図8のアセンブリを示す図である。
【図9】 ダイオンダイアセンブリ(die−on−die assembly)に適用される本発明の方法を示す図である。
【図10】 共通基板上におけるダイのサイドバイサイドアセンブリ(side−by−side assembly)に適用される本発明の方法を示す図である。

Claims (11)

  1. 半導体ダイを基板に接着する方法であって、
    まず、第1の面積を有する、薄くて柔軟な熱硬化性でかつポリイミドの絶縁性のフィルムを提供するステップと、
    次に、前記第1の面積に比べてそれぞれ実質的に小さい第3の面積を有し、互いに間隔をあけた複数の半導体ダイを提供するような第2の面積を有する半導体ウェーハ上に、剥離シートのない前記薄くて柔軟な熱硬化性フィルムのみを設けるステップと、
    次に、前記熱硬化性フィルムと前記半導体ウェーハとを接着するように、前記熱硬化性フィルムを部分的に硬化させるために、前記半導体ウェーハと前記熱硬化性フィルムを予熱するステップと、
    次に、個々の素子を形成するために、前記熱硬化性フィルムと前記複数の同一である半導体ダイの両方を同時にシンギュレーションするステップと、
    次に、前記基板を加熱するステップと、
    次に、前記半導体ダイ上の前記熱硬化性フィルムを前記基板の頂部表面に押し付けて接着するように、前記シンギュレーションされた半導体ダイを前記基板の頂部表面に配置するステップと、
    次に、前記熱硬化性フィルムを完全に硬化させて、前記半導体ダイを前記基板に対して堅固に接着させるステップと
    を含むことを特徴とする方法。
  2. 前記基板が、導体リードフレームであることを特徴とする請求項1に記載の方法。
  3. 前記熱硬化性フィルムが、ポリイミドであることを特徴とする請求項1に記載の方法。
  4. 前記熱硬化性フィルムが、ポリイミドであることを特徴とする請求項2に記載の方法。
  5. 前記半導体ダイ上の前記熱硬化性フィルムが、前記基板上での組立て後に、前記半導体ダイの面積と同じ面積を有することを特徴とする請求項1に記載の方法。
  6. 第2接着フィルムを有する第2半導体ダイを、前記第1半導体ダイから水平方向に移動した位置で前記基板に接着させるステップを含むことを特徴とする請求項1に記載の方法。
  7. その上に第2接着フィルムを有する第2半導体ダイを、前記基板に固定された前記ダイの頂部に接着させるステップを含むことを特徴とする請求項1に記載の方法。
  8. 前記第1の面積が、前記第2の面積と実質的に同じであることを特徴とする請求項1に記載の方法。
  9. 前記半導体ダイおよびフィルムを、ピックアンドプレイス装置によって前記基板へと移動させることを特徴とする請求項1に記載の方法。
  10. 前記第2接着フィルムが、前記基板に固定される前記半導体ダイの前記頂部表面に比べてより小さい面積を有することを特徴とする請求項7に記載の方法。
  11. 前記第2半導体ダイと前記第2接着フィルムの両方が、前記基板に固定される前記半導体ダイと同じ面積を有することを特徴とする請求項7に記載の方法。
JP2001540836A 1999-11-24 2000-11-22 導電性接着フィルムを用いるパワー半導体ダイの接着方法 Expired - Fee Related JP3771843B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16745699P 1999-11-24 1999-11-24
US60/167,456 1999-11-24
PCT/US2000/032176 WO2001039266A1 (en) 1999-11-24 2000-11-22 Power semiconductor die attach process using conductive adhesive film

Publications (2)

Publication Number Publication Date
JP2003515929A JP2003515929A (ja) 2003-05-07
JP3771843B2 true JP3771843B2 (ja) 2006-04-26

Family

ID=22607438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001540836A Expired - Fee Related JP3771843B2 (ja) 1999-11-24 2000-11-22 導電性接着フィルムを用いるパワー半導体ダイの接着方法

Country Status (6)

Country Link
JP (1) JP3771843B2 (ja)
KR (1) KR100468233B1 (ja)
CN (1) CN1187804C (ja)
AU (1) AU1927501A (ja)
TW (1) TW501207B (ja)
WO (1) WO2001039266A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6620651B2 (en) 2001-10-23 2003-09-16 National Starch And Chemical Investment Holding Corporation Adhesive wafers for die attach application
US6781352B2 (en) 2002-12-16 2004-08-24 International Rectifer Corporation One cycle control continuous conduction mode PFC boost converter integrated circuit with integrated power switch and boost converter
KR100885099B1 (ko) * 2003-12-15 2009-02-20 후루카와 덴키 고교 가부시키가이샤 웨이퍼 가공용 테이프 및 그 제조방법
JP2006114649A (ja) * 2004-10-14 2006-04-27 Fuji Electric Device Technology Co Ltd 半導体装置の製造方法およびその製造装置
CN101807531A (zh) * 2010-03-30 2010-08-18 上海凯虹电子有限公司 一种超薄芯片的封装方法以及封装体

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2994510B2 (ja) * 1992-02-10 1999-12-27 ローム株式会社 半導体装置およびその製法
US5286679A (en) * 1993-03-18 1994-02-15 Micron Technology, Inc. Method for attaching a semiconductor die to a leadframe using a patterned adhesive layer
JP3467611B2 (ja) * 1995-09-29 2003-11-17 日本テキサス・インスツルメンツ株式会社 半導体装置の製造方法
US5776799A (en) * 1996-11-08 1998-07-07 Samsung Electronics Co., Ltd. Lead-on-chip type semiconductor chip package using an adhesive deposited on chip active surfaces at a wafer level and method for manufacturing same

Also Published As

Publication number Publication date
WO2001039266A1 (en) 2001-05-31
CN1187804C (zh) 2005-02-02
WO2001039266A9 (en) 2002-04-18
KR100468233B1 (ko) 2005-01-26
AU1927501A (en) 2001-06-04
KR20020059782A (ko) 2002-07-13
TW501207B (en) 2002-09-01
CN1399794A (zh) 2003-02-26
JP2003515929A (ja) 2003-05-07

Similar Documents

Publication Publication Date Title
CN1303660C (zh) 用粘合剂薄膜将半导体管芯粘结到衬底的半导体封装方法
JP4119054B2 (ja) 半導体素子のダイ接着方法及び装置
TWI234253B (en) Semiconductor device and manufacturing method thereof
US7838340B2 (en) Pre-molded clip structure
US10204882B2 (en) Stacked package module having an exposed heat sink surface from the packaging
US9673170B2 (en) Batch process for connecting chips to a carrier
US20090261462A1 (en) Semiconductor package with stacked die assembly
CN110620052A (zh) 半导体装置的制造方法
US11830856B2 (en) Semiconductor package and related methods
TW201218317A (en) Method of multi-chip stacking for decreasing void between chips
CN100380653C (zh) 半导体器件及其制造方法
WO2018181417A1 (ja) パワーモジュールおよびその製造方法
JP3771843B2 (ja) 導電性接着フィルムを用いるパワー半導体ダイの接着方法
US6723620B1 (en) Power semiconductor die attach process using conductive adhesive film
US10319659B2 (en) Semiconductor package and related methods
KR20180089886A (ko) 반도체 칩의 제조 방법
WO2020162412A1 (ja) フィルム状接着剤、接着シート、及び半導体装置
TWI286456B (en) Multi-layer circuit board integrated with electronic elements and method for fabricating the same
WO2001080312A1 (en) Pre-application of die attach material to wafer back
JP2020174220A (ja) 半導体パッケージ
JP2021052142A (ja) 半導体モジュールおよびその製造方法
JP2001210610A (ja) 異方導電性フィルム付き半導体ウエハの製造方法
JPH11288951A (ja) 半導体装置及びその製造方法
JPS59221369A (ja) 半導体チツプの接着取付け方法

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20041018

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20041022

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050107

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20050107

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050408

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050616

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20050722

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051012

RD13 Notification of appointment of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7433

Effective date: 20051012

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20051013

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20051115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20051209

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051214

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060113

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060210

R150 Certificate of patent or registration of utility model

Ref document number: 3771843

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100217

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100217

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110217

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120217

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130217

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130217

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140217

Year of fee payment: 8

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees