JP2006222351A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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Abstract
【課題】 周回電源配線を経由して静電ノイズを電源へ回避するパターンを有する半導体チップを、現在実装されているパッケージと異なるパッケージに実装して半導体チップ内にワイヤボンドされない無接続電源用パッドが生じると、半導体装置の高ノイズ耐性が低下するという問題が発生する。
【解決手段】 無接続電源用パッドへ周回電源配線から静電ノイズが回避されないように、無接続電源用パッドと周回電源配線を接続する周回電源接続配線を切断する。
【選択図】 図1
Description
(半導体装置の製造方法の概略)
半導体装置の一般的な製造方法を図7の概略製造フローを用いて説明する。本明細書で説明する半導体装置は、P型半導体基板を用い、基板電位は低電位の電源電圧VSSとしている場合を説明する。当然、N型半導体基板を用い基板電位を高電位の電源電圧VDDとして説明することもできるが、本発明の作用及び効果は、基板電位の取り方に拘わらず同様の効果が得られることは明白であるので、以後P型半導体基板を用いて説明する。
(従来技術の高ノイズ耐性改善手段)
MOSトランジスタを用いた半導体装置では、ボンディングパッド10を介して外部から半導体装置へ侵入する静電ノイズにより、半導体チップ1Aに含まれる内部回路4の入力インターフェースや出力インターフェースとなるMOSトランジスタが破壊され、半導体装置が使用不可能となるノイズ破壊問題が発生する。このノイズ破壊問題は、静電ノイズにより、前記インターフェースとなるMOSトランジスタの薄いゲート酸化膜や、トランジスタのドレイン端子に形成されるPN接合が破壊され、MOSトランジスタが機能を失うという問題である。
(従来技術の電源配線インピーダンス改善手段)
一方、半導体装置は、半導体装置製造技術の微細化が進むとともにトランジスタ等の電子素子を大規模に集積するようになった。その結果、前記電子素子に電力を供給する電源用配線が細く長くなり前記電源配線インピーダンスが増大し、前記電子素子に必要な電力を十分に供給することが困難になり、半導体装置の機能や動作に不具合が発生するという電源配線のインピーダンス増加問題が発生してきた。更に、前記電源配線のインピーダンス増加は、高電圧ノイズVNを電源電圧VSSへ回避することの障害になることは言うまでも無い。
(従来技術のまとめ)
以上、説明したように従来技術によると、適切な電源用配線パターンを半導体チップに形成することにより、入力保護回路を備えて静電ノイズ耐性が高く、複数の電源用パッドを備えて低インピーダンスで電力を供給することができる信頼性の高い半導体装置が実現できる。
(手段1)
周回電源配線と、内部電源配線を介して同電位に接続される複数の電源用パッドと、信号用パッドと、前記信号用パッドおよび内部回路の間に接続されるとともに保護回路電源配線を介して前記周回電源配線に接続された入力保護回路とからなり、ワイヤボンドされる第1の電源用パッドは、第1の周回電源接続配線を介して前記周回電源配線と接続され、ワイヤボンドされない第2の電源用パッドの第2の周回電源接続配線は切断されている半導体チップを有する半導体装置とした。
(手段2)
ワイヤボンドされない電源用パッドに接続される周回電源接続配線を、第1の配線切断手段を用いて切断したパッド形成マスクを作成する工程と、前記パッド形成マスクを用いてワイヤボンドされない前記電源用パッドを、周回電源配線から分離する工程とを有する半導体装置の製造方法とした。
(手段3)
複数の電源用パッドが周回電源接続配線を介して周回電源配線と接続された半導体装置において、第2の配線切断手段を用いて前記周回電源接続配線の1本あるいは複数本を切断して、前記複数の電源用パッドのうちのワイヤボンドされない電源用パッドを前記周回電源配線から分離する半導体装置の製造方法とした。
なお、ボンディングパッド10と周回電源配線8と周回電源接続配線9は同一の金属で同一の工程で形成すると、高ノイズ耐性改善と電源インピーダンス改善効果が一層高まる。
1B 半導体チップ
2A パッケージA
2B パッケージB
3A チップタブ
3B チップタブ
4 内部回路
5 ワイヤリード
6 ボンディングワイヤ
7 リードフレーム
8 周回電源配線
9 周回電源接続配線
10 ボンディングパッド
11 内部電源配線
12 保護回路電源配線
20 パッド周辺部
21 信号用パッド配線
22 信号伝達配線
23 入力保護回路
24 保護ダイオード
25 第1保護抵抗
26 第2保護抵抗
27 PMOSトランジスタ
28 NMOSトランジスタ
31 タブリード
32 タブ釣
41 信号処理回路
7A リードフレーム
7B リードフレーム
71 リードフレーム枠
91 切断された周回電源接続配線
IN、IN1、IN2、OUT1、OUT2 信号用パッド
VSS1、VSS2、VSS3 電源電圧VSSの電源用パッド
VDD1 電源電圧VDDの電源用パッド
VDD 高電位の電源電圧
VSS 低電位の電源電圧
VN 高電圧ノイズ
VG トランジスタのゲート耐圧
SIN 入力信号
LT モールド幅
L1 モールドマージン
L2 ワイヤー長
L3 回路幅
TG ゲート酸化膜厚
Claims (7)
- 周回電源配線と、内部電源配線を介して同電位に接続される複数の電源用パッドと、信号用パッドと、前記信号用パッドおよび内部回路の間に接続されるとともに保護回路電源配線を介して前記周回電源配線に接続された入力保護回路とからなり、ワイヤボンドされる第1の電源用パッドは、第1の周回電源接続配線を介して前記周回電源配線と接続され、ワイヤボンドされない第2の電源用パッドの第2の周回電源接続配線は切断されている半導体チップを有する半導体装置。
- ワイヤボンドされない電源用パッドに接続される周回電源接続配線を、第1の配線切断手段を用いて切断したパッド形成マスクを作成する工程と、前記パッド形成マスクを用いてワイヤボンドされない前記電源用パッドを、周回電源配線から分離する工程とを有する半導体装置の製造方法。
- 複数の電源用パッドが周回電源接続配線を介して周回電源配線と接続された半導体装置において、第2の配線切断手段を用いて前記周回電源接続配線の1本あるいは複数本を切断して、前記複数の電源用パッドのうちのワイヤボンドされない電源用パッドを前記周回電源配線から分離する半導体装置の製造方法
- 前記第1の配線切断手段が、前記周回電源接続配線のデータをマスクデータから取り除く、マスクデータ操作手段である請求項2に記載の半導体装置の製造方法。
- 前記第1の配線切断手段が、高エネルギビームを用いたビーム切断手段である請求項2に記載の半導体装置の製造方法。
- 前記第2の配線切断手段が、高エネルギビームを用いたビーム切断手段である請求項3に記載の半導体装置の製造方法。
- 前記第2の配線切断手段が、機械的な切削による切断手段である請求項3に記載の半導体装置の製造方法。
Priority Applications (5)
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JP2005035880A JP2006222351A (ja) | 2005-02-14 | 2005-02-14 | 半導体装置およびその製造方法 |
US11/350,507 US7577931B2 (en) | 2005-02-14 | 2006-02-09 | Semiconductor device and method of manufacturing the same |
TW095104752A TW200644211A (en) | 2005-02-14 | 2006-02-13 | Semiconductor device and method of manufacturing the same |
CNB2006100711066A CN100527409C (zh) | 2005-02-14 | 2006-02-14 | 半导体器件 |
KR20060014190A KR20060091263A (ko) | 2005-02-14 | 2006-02-14 | 반도체 디바이스 및 이의 제조 방법 |
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JP2005035880A JP2006222351A (ja) | 2005-02-14 | 2005-02-14 | 半導体装置およびその製造方法 |
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US (1) | US7577931B2 (ja) |
JP (1) | JP2006222351A (ja) |
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CN (1) | CN100527409C (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017188903A (ja) * | 2009-11-05 | 2017-10-12 | ローム株式会社 | 信号伝達回路装置、半導体装置とその検査方法及び検査装置、並びに、信号伝達装置及びこれを用いたモータ駆動装置 |
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CN101241894A (zh) * | 2007-09-20 | 2008-08-13 | 三星电子株式会社 | 智能卡金属载带及其制造方法和包括该载带的封装模块 |
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JPS61218153A (ja) * | 1985-03-25 | 1986-09-27 | Hitachi Ltd | 半導体集積回路装置 |
JPH01316948A (ja) * | 1988-06-17 | 1989-12-21 | Nec Ic Microcomput Syst Ltd | 半導体集積回路 |
JPH0230176A (ja) * | 1988-07-19 | 1990-01-31 | Nec Corp | 半導体集積回路 |
JPH11163032A (ja) * | 1997-11-28 | 1999-06-18 | Toshiba Microelectronics Corp | 半導体装置 |
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US6161215A (en) * | 1998-08-31 | 2000-12-12 | Hewlett-Packard Company | Package routing of integrated circuit signals |
JP3236583B2 (ja) * | 1999-06-24 | 2001-12-10 | ローム株式会社 | 半導体集積回路装置 |
JP2003332448A (ja) * | 2002-05-14 | 2003-11-21 | Mitsubishi Electric Corp | 半導体装置 |
JP2004111796A (ja) * | 2002-09-20 | 2004-04-08 | Hitachi Ltd | 半導体装置 |
-
2005
- 2005-02-14 JP JP2005035880A patent/JP2006222351A/ja not_active Withdrawn
-
2006
- 2006-02-09 US US11/350,507 patent/US7577931B2/en not_active Expired - Fee Related
- 2006-02-13 TW TW095104752A patent/TW200644211A/zh unknown
- 2006-02-14 KR KR20060014190A patent/KR20060091263A/ko not_active Application Discontinuation
- 2006-02-14 CN CNB2006100711066A patent/CN100527409C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61218153A (ja) * | 1985-03-25 | 1986-09-27 | Hitachi Ltd | 半導体集積回路装置 |
JPH01316948A (ja) * | 1988-06-17 | 1989-12-21 | Nec Ic Microcomput Syst Ltd | 半導体集積回路 |
JPH0230176A (ja) * | 1988-07-19 | 1990-01-31 | Nec Corp | 半導体集積回路 |
JPH11163032A (ja) * | 1997-11-28 | 1999-06-18 | Toshiba Microelectronics Corp | 半導体装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017188903A (ja) * | 2009-11-05 | 2017-10-12 | ローム株式会社 | 信号伝達回路装置、半導体装置とその検査方法及び検査装置、並びに、信号伝達装置及びこれを用いたモータ駆動装置 |
US10382035B2 (en) | 2009-11-05 | 2019-08-13 | Rohm Co., Ltd. | Signal transmission circuit device, semiconductor device, method and apparatus for inspecting semiconductor device, signal transmission device, and motor drive apparatus using signal transmission device |
US11115020B2 (en) | 2009-11-05 | 2021-09-07 | Rohm Co., Ltd. | Signal transmission circuit device, semiconductor device, method and apparatus for inspecting semiconductor device, signal transmission device, and motor drive apparatus using signal transmission device |
US11658659B2 (en) | 2009-11-05 | 2023-05-23 | Rohm Co., Ltd. | Signal transmission circuit device, semiconductor device, method and apparatus for inspecting semiconductor device, signal transmission device, and motor drive apparatus using signal transmission device |
Also Published As
Publication number | Publication date |
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US7577931B2 (en) | 2009-08-18 |
CN100527409C (zh) | 2009-08-12 |
CN1822363A (zh) | 2006-08-23 |
KR20060091263A (ko) | 2006-08-18 |
TW200644211A (en) | 2006-12-16 |
US20060180918A1 (en) | 2006-08-17 |
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