JP2020537342A - 半導体デバイスにおける成形された相互接続バンプ - Google Patents
半導体デバイスにおける成形された相互接続バンプ Download PDFInfo
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- JP2020537342A JP2020537342A JP2020519726A JP2020519726A JP2020537342A JP 2020537342 A JP2020537342 A JP 2020537342A JP 2020519726 A JP2020519726 A JP 2020519726A JP 2020519726 A JP2020519726 A JP 2020519726A JP 2020537342 A JP2020537342 A JP 2020537342A
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- bumps
- surface area
- lead frame
- semiconductor package
- tapered
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 claims description 40
- 229910000679 solder Inorganic materials 0.000 claims description 25
- 229920002120 photoresistant polymer Polymers 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
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- 230000005540 biological transmission Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 238000007747 plating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
Description
Tan(90−θ)=a/h
Tan(θ)=h/a
a=h/Tan(θ)
再び、円形の断面を仮定すると、面積を倍にするため下記となる。
b+2a=(2)1/2×b
b+2(h/Tan(θ))=(2)1/2×b
h/Tan(θ)=1/2b((2)1/2−1)=0.2071×b
Tan(θ)=h/(0.2071×b)
θ=aTan(h/0.2071b)
したがって、h=50ミクロン及びb=100ミクロンである場合、θは67°、a=20.7ミクロンとなる。
Claims (25)
- 半導体パッケージであって、
リードフレームと、
複数のバンプを介して前記リードフレームに取り付けられる半導体ダイと、
を含み、
前記複数のバンプの各々が、
半導体ダイに接続され、端部表面面積A1を有する第1の端部と、
前記リードフレームに接続される反対の第2の端部であって、端部表面面積A2を有する、前記第2の端部と、
を含み、
前記第1の端部の前記端部表面面積A1が前記第2の端部の端部表面面積A2より小さい、
半導体パッケージ。 - 請求項1に記載の半導体パッケージであって、前記第2の端部の前記端部表面面積A2が、前記第1の端部の前記端部表面面積A1よりも少なくとも10パーセント大きい、半導体パッケージ。
- 請求項1に記載の半導体パッケージであって、前記第2の端部の前記端部表面面積A2が、前記第1の端部の前記端部表面面積A1の少なくとも2倍である、パッケージ。
- 請求項1に記載の半導体パッケージであって、前記複数のバンプの各々が切頭円錐として成形され、前記切頭円錐の大きな端部がA2を定義し、前記切頭円錐の狭い端部がA1を定義する、半導体パッケージ。
- 請求項1に記載の半導体パッケージであって、前記複数のバンプの各々に対し、前記第1の端部から前記第2の端部に向かう線に直交して得られる断面が長円形又は円形である、パッケージ。
- 請求項1に記載の半導体パッケージであって、前記リードフレームが金属製であり、前記複数のバンプが銅で構成される、半導体パッケージ。
- 請求項1に記載の半導体パッケージであって、
前記複数のバンプの各々に関連するはんだ材料を更に含み、
前記バンプの前記第2の端部を前記パッケージに取り付けるため、前記はんだ材料が、前記バンプの前記第2の端部と前記リードフレームとの間に配置される、
半導体パッケージ。 - 請求項1に記載の半導体パッケージであって、前記リードフレーム、前記半導体ダイ、及び前記複数のバンプを少なくとも部分的に覆うモールド化合物を更に含む、半導体パッケージ。
- 半導体パッケージであって、
リードフレーム、
前記リードフレームに取り付けられる半導体ダイ、及び
前記半導体ダイと前記リードフレームとを電気的に接続する複数のバンプ、
を含み、
前記バンプが、第1の端部から反対の第2の端部まで延在する長手方向長さを有し、前記第1の端部が前記半導体ダイに接続され、第2の端部が前記リードフレームに接続され、前記第1の端部が第2の端部の横方向幅W2より小さい長手方向長さに直交する横方向幅W1を有する、
半導体パッケージ。 - 請求項9に記載の半導体パッケージであって、前記複数のバンプの各々が、前記第1の端部と前記第2の端部との間で先細りにされている、半導体パッケージ。
- 請求項9に記載の半導体パッケージであって、前記第1の端部が端部表面面積A1を有し、前記第2の端部が端部表面面積A2を有し、前記端部表面面積A1が、前記端部表面面積A2の寸法の少なくとも半分である、半導体パッケージ。
- 請求項9に記載の半導体パッケージであって、前記第1の端部から前記第2の端部に向かう線に直交して得られる前記複数のバンプ断面の各々が長円形又は円形である、半導体パッケージ。
- 請求項9に記載の半導体パッケージであって、前記半導体ダイと前記前記リードフレームとを電気的に接続する複数の信号バンプを更に備え、前記複数の信号バンプが、複数のバンプの平均横方向幅よりも小さい平均横方向幅を有する、半導体パッケージ。
- 請求項13に記載の半導体パッケージであって、
はんだ材料であって、前記複数のバンプの前記第2の端部と前記リードフレームとの間に配置される、前記はんだ材料、及び
前記リードフレーム、前記半導体ダイ、前記複数のバンプ、及び前記複数の信号バンプを少なくとも部分的に覆うモールド化合物、
を更に含む、半導体パッケージ。 - 請求項9に記載の半導体パッケージであって、前記リードフレームが金属製である、半導体パッケージ。
- 半導体パッケージにおけるリードフレームにダイを取り付けるために、前記ダイ上に複数の先細りにされたバンプを形成する方法であって、
ウェハ上にシード材料を堆積すること、
前記シード材料上にフォトレジストを堆積すること、
バンプサイトを備えたパターンに従って前記フォトレジストをマスクすること、
中に複数の先細りにされたサイトを形成するため前記マスクされたフォトレジストを過剰露出させることであって、先細りにされたサイトの各々が、前記ウェハに最も近い第1の端部と、前記ウェハから最も遠い第2の端部とを有する、前記マスクされたフォトレジストを過剰露出させること、
一つ又はそれ以上の金属を前記複数の先細りにされたサイトに配置すること、
前記複数の先細りにされたバンプを形成するため前記フォトレジストを除去することであって、前記複数の先細りにされたバンプの先細りにされたバンプの各々が、前記ウェハに最も近い前記第1の端部において第1の表面面積A1を有し、前記ウェハから最も遠い第2の端部において第2の端部表面面積A2を有し、前記先細りにされたバンプの前記第1の端部が前記ウェハに接し、前記第1の表面面積A1が前記第2の表面面積A2よりも小さい、前記フォトレジストを除去すること、及び
前記ウェハを複数のダイに個片化すること、
を含む方法。 - 請求項16に記載の方法であって、前記第2の端部表面面積A2が、前記第1の表面面積A1よりも10パーセント大きい、方法。
- 請求項16に記載の方法であって、前記第2の表面面積A2が、前記第1の表面面積A1の少なくとも2倍である、方法。
- 請求項16に記載の方法であって、前記複数の先細りにされたサイトの各々が、前記リードフレームに面する前記ダイの表面に対して約70度又はそれより小さい側壁傾斜を備えて形成される、方法。
- 請求項16に記載の方法であって、前記複数の先細りにされたバンプの各々が、曲線形状を有する横方向断面を有する、方法。
- 請求項20に記載の方法であって、前記複数の先細りにされたバンプの各々が、円形又は長円形形状の横方向断面を有する、方法。
- 半導体ダイをリードフレームに電気的に結合する方法であって、
前記半導体ダイ上に複数の先細りにされたバンプを形成することであって、前記複数の先細りにされたバンプの各々が、前記半導体ダイに最も近い第1の端部において第1の端部表面面積A1を有し、第2の反対の端部において第2の端部表面面積A2を有するようにし、前記第1の端部表面面積A1が前記第2の端部表面面積A2より小さく、前記第1の端部が前記半導体ダイに取り付けられる、前記複数の先細りにされたバンプを形成することこと、及び
前記複数の先細りにされたバンプの前記第2の端部を前記リードフレームにはんだ付けすること、
を含む、方法。 - 請求項22に記載の方法であって、前記第2の端部表面面積A2が、前記第1の端部表面面積A1の少なくとも2倍である、方法。
- 請求項22に記載の方法であって、前記複数の先細りにされたバンプが、前記先細りにされたバンプの中心線に対して約70度又はそれより小さい側壁傾斜を有する、方法。
- 請求項22に記載の方法であって、前記複数の先細りにされたバンプの各々が、前記先細りにされたバンプの中心線に直交する横方向断面において長円形形状を有する、方法。
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JPH10178047A (ja) * | 1996-12-16 | 1998-06-30 | Seiko Instr Inc | 半導体装置 |
JP2014521935A (ja) * | 2011-07-22 | 2014-08-28 | アレグロ・マイクロシステムズ・エルエルシー | 磁界変換器を有する電流センサの強化絶縁 |
JP2014179364A (ja) * | 2013-03-13 | 2014-09-25 | Ps4 Luxco S A R L | 半導体チップ及びこれを備える半導体装置 |
JP2015149459A (ja) * | 2014-02-10 | 2015-08-20 | 新光電気工業株式会社 | 半導体装置及びその製造方法 |
JP2017152646A (ja) * | 2016-02-26 | 2017-08-31 | 富士通株式会社 | 電子部品、電子装置及び電子機器 |
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JP2020537340A (ja) | 2020-12-17 |
JP2020537341A (ja) | 2020-12-17 |
US20190109110A1 (en) | 2019-04-11 |
WO2019070995A1 (en) | 2019-04-11 |
CN111357098A (zh) | 2020-06-30 |
US11444048B2 (en) | 2022-09-13 |
US20210210453A1 (en) | 2021-07-08 |
US20230012200A1 (en) | 2023-01-12 |
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US20220037277A1 (en) | 2022-02-03 |
JP7448754B2 (ja) | 2024-03-13 |
EP3692574A4 (en) | 2020-12-02 |
WO2019071072A1 (en) | 2019-04-11 |
US10957666B2 (en) | 2021-03-23 |
EP3692574A1 (en) | 2020-08-12 |
US20190109016A1 (en) | 2019-04-11 |
US11152322B2 (en) | 2021-10-19 |
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