JP6466594B2 - ダイとクリップの接着方法 - Google Patents
ダイとクリップの接着方法 Download PDFInfo
- Publication number
- JP6466594B2 JP6466594B2 JP2017551568A JP2017551568A JP6466594B2 JP 6466594 B2 JP6466594 B2 JP 6466594B2 JP 2017551568 A JP2017551568 A JP 2017551568A JP 2017551568 A JP2017551568 A JP 2017551568A JP 6466594 B2 JP6466594 B2 JP 6466594B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- clip
- substrate
- bonding method
- adhesive
- 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.)
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- 238000000034 method Methods 0.000 title claims description 63
- 239000000758 substrate Substances 0.000 claims description 41
- 238000005245 sintering Methods 0.000 claims description 30
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 29
- 229910052709 silver Inorganic materials 0.000 claims description 29
- 239000004332 silver Substances 0.000 claims description 29
- 239000000853 adhesive Substances 0.000 claims description 25
- 230000001070 adhesive effect Effects 0.000 claims description 25
- 238000010030 laminating Methods 0.000 claims description 8
- 235000012773 waffles Nutrition 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 238000003475 lamination Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000682 scanning probe acoustic microscopy Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
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Description
本願は、参照により本明細書にその全体をあらゆる目的で援用する2014年12月17日出願の米国仮特許出願第62/093,004号、発明の名称「ダイとクリップの接着方法」に関し、その優先権を主張する。
目的パッケージ
図5は、本開示の実施形態のダイ及びクリップ接着を有するパッケージを示す。図示されるように、このパッケージは、リードフレーム54に保持されるように構成されるクリップ50及びダイ52を含む。
図6Aは、例示的なリードフレームを示し、図6Bは、例示的なクリップの設計を示し、図6Cは、本開示の実施形態の例示的なダイを示す。銀膜と粘着剤も準備する。
ダイとクリップに、焼結可能な銀膜であるArgomax(登録商標)8020(Alpha Metals、Inc.)が積層される。粘着剤を、リードフレーム上の以下に示す位置に分注した。1つの実施形態においては、粘着剤は、DATA600として販売されており、Alpha Metals、Inc.の市販品である。
走査型音響顕微鏡により、両界面、即ち、クリップとダイ及びダイと基板、で均一且つ十分な接続が確認された。
接着されたコンポーネントの断面を作成し、走査型電子顕微鏡を用いて接続を調べた。ダイとクリップの両方が接続されている。約15μmの均一且つ十分な焼結銀結合が、接続された部品の間に形成されている。
クリップに対して、焼結可能な銀膜を、前述したように個別に積層することができる、又はリードフレームに接続されるマトリックスの形態として積層することができる。この場合、クリップ間の間隔を、基板又はリードフレームの上に位置させたダイにマッチされることができる。図12A、図12B、図13A、及び図13Bは、積層前後のそのような設計の例を示す。クリップをダイの上側に接着させるために、クリップは、接着済みのダイを有する基板リードフレームの上部で位置決めされ、載置される。続く焼結工程は、前述と同様に行われる。
Claims (17)
- ダイとクリップの接着方法であって、
クリップ、ダイ、及び基板を準備することと、
前記クリップ及び前記ダイの上に焼結可能な銀膜を積層することと、
前記基板の上に粘着剤を堆積することと、
前記ダイを前記粘着剤及び前記銀膜を介して前記基板の上に載置することと、
前記ダイの上に前記銀膜を介して前記クリップを載置し、前記基板の上に前記粘着剤及び前記銀膜を介して前記クリップを載置して、基板/ダイ/クリップパッケージを形成することと、
前記基板/ダイ/クリップパッケージを焼結することと、
を含み、
前記粘着剤が、前記ダイ及び前記クリップの前記基板への一時的な接着を提供することを特徴とする接着方法。 - 前記焼結可能な銀膜を積層することが、0.5〜20MPaの圧力及び100〜200℃の温度を1秒間〜90秒間未満印加することを含む請求項1に記載の接着方法。
- 前記焼結可能な銀膜を積層することが、2〜3MPa以上の圧力及び130℃の温度を30秒間印加することを含む請求項1に記載の接着方法。
- 前記ダイが、個別に積層される、又は全ウェハとして積層され、その後ダイシングが行われる請求項1に記載の接着方法。
- 前記クリップが、個別に積層される、又は銅板の形態で積層され、その後ダイシング又はスタンピングが行われる請求項1に記載の接着方法。
- 前記焼結可能な銀膜を積層することが、特定の圧力及び温度を提供することができる積層プレスで、又はダイボンディング装置で達成される請求項1に記載の接着方法。
- 前記積層されたダイが、ワッフルパック内又はダイシングテープ上に回収され保管される請求項1に記載の接着方法。
- 前記積層されたクリップが、テープ、リール、又はワッフルパックに回収され保管される請求項1に記載の接着方法。
- 前記パッケージの各コンポーネントが焼結プレスに移される前に、前記粘着剤が前記基板の上に分注され、前記各コンポーネントを適所に載置し維持する請求項1に記載の接着方法。
- 前記基板/ダイ/クリップパッケージの焼結の間に、焼結プロセスに干渉せずに前記粘着剤が蒸発する請求項8に記載の接着方法。
- 前記ダイが、ダイボンダで前記基板の上に載置され、前記粘着剤で前記適所に保持される請求項1に記載の接着方法。
- 前記クリップが、ピックアンドプレース装置又はエポキシダイボンダで前記基板の上に載置され、前記粘着剤で前記適所に保持される請求項1に記載の接着方法。
- 前記基板/ダイ/クリップパッケージを焼結することが、圧力ツール及び加熱されたプラテンを有する焼結プレスを含む請求項1に記載の接着方法。
- 焼結が、3〜25MPaの圧力及び190〜300℃の温度を1秒間〜180秒間印加することを含む請求項13に記載の接着方法。
- 焼結が、10MPaの圧力及び250℃の温度を60秒間印加することを含む請求項13に記載の接着方法。
- 複数のクリップを更に含み、前記焼結可能な銀膜が、前記基板に接続されるマトリックスの形態として、前記クリップに積層される請求項1に記載の接着方法。
- 前記クリップ間の間隔が、前記基板の上に位置させたダイにマッチされる請求項16に記載の接着方法。
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KR102003881B1 (ko) * | 2013-02-13 | 2019-10-17 | 삼성전자주식회사 | 반도체 소자 및 그 제조 방법 |
WO2014127381A1 (en) * | 2013-02-15 | 2014-08-21 | Ormet Circuits, Inc. | Structures for z-axis interconnection of multilayer electronic substrates |
JP5664679B2 (ja) | 2013-03-07 | 2015-02-04 | 三菱マテリアル株式会社 | パワーモジュール用基板の製造方法 |
CN103489819B (zh) * | 2013-09-18 | 2016-06-01 | 中国东方电气集团有限公司 | 一种用于半导体制程中的薄片临时键合与解键合方法 |
DE102014104272A1 (de) * | 2014-03-26 | 2015-10-01 | Heraeus Deutschland GmbH & Co. KG | Träger und Clip jeweils für ein Halbleiterelement, Verfahren zur Herstellung, Verwendung und Sinterpaste |
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US20180166415A1 (en) | 2018-06-14 |
FI3234988T3 (fi) | 2024-11-11 |
MY188980A (en) | 2022-01-17 |
TW202030808A (zh) | 2020-08-16 |
KR102052326B1 (ko) | 2019-12-05 |
JP2018504788A (ja) | 2018-02-15 |
SG11201704928UA (en) | 2017-07-28 |
EP3234988A4 (en) | 2018-09-12 |
CN107431019B (zh) | 2021-10-08 |
TWI839472B (zh) | 2024-04-21 |
WO2016100470A1 (en) | 2016-06-23 |
CN107431019A (zh) | 2017-12-01 |
TW202030807A (zh) | 2020-08-16 |
TWI689020B (zh) | 2020-03-21 |
EP3234988A1 (en) | 2017-10-25 |
TWI726629B (zh) | 2021-05-01 |
EP3234988B1 (en) | 2024-10-09 |
TW201626474A (zh) | 2016-07-16 |
US11289447B2 (en) | 2022-03-29 |
KR20170107994A (ko) | 2017-09-26 |
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