JP5499034B2 - ダブルチャネルトランジスタを備えたsramセルのためのボディコンタクト - Google Patents
ダブルチャネルトランジスタを備えたsramセルのためのボディコンタクト Download PDFInfo
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Description
Claims (24)
- アクティブ領域の上方に形成される第1のゲート電極と、異なるドーピングがなされた第1及び第2のチャネル領域とを備えているp型ダブルチャネルトランジスタと、
前記アクティブ領域の上方に形成される第2のゲート電極と、異なるドーピングがなされた第3及び第4のチャネル領域とを備えているn型ダブルチャネルトランジスタと、
前記アクティブ領域の上方に形成され、前記第1のゲート電極及び前記第2のゲート電極の間に位置し、前記p型及びn型ダブルチャネルトランジスタの第1及び第2のボディ領域に接続するダミーゲート電極と、
前記p型及びn型ダブルチャネルトランジスタの上方に形成される層間誘電体材質と、
前記層間誘電体材質内に形成され、前記第1及び第2のゲート電極と、前記ダミーゲート電極と、前記p型及びn型ダブルチャネルトランジスタのソース領域と接続するコンタクト要素とを備えたメモリセル。 - 前記ダミーゲート電極と前記ダミーゲート電極の下方に位置する前記アクティブ領域の一部分との間の伝導性パスを更に備えた、請求項1のメモリセル。
- 前記伝導性パスは金属シリサイド材質を備えている、請求項2のメモリセル。
- 前記コンタクト要素は前記伝導性パスを介して前記n型及びp型ダブルチャネルトランジスタのボディ領域と接続している、請求項2のメモリセル。
- 前記p型及びn型ダブルチャネルトランジスタのソース領域をビット線に接続するように構成される選択トランジスタを更に備えた、請求項1のメモリセル。
- 前記選択トランジスタは単一チャネルトランジスタである、請求項5のメモリセル。
- 前記選択トランジスタ、前記p型ダブルチャネルトランジスタ及び前記n型ダブルチャネルトランジスタがトランジスタ要素の全てである、請求項5のメモリセル。
- 前記第1のゲート電極の側壁上に形成される第1のスペーサ構造と前記第2のゲート電極の側壁上に形成される第2のスペーサ構造とを更に備え、前記伝導性パスは前記ダミーゲート電極の側壁に沿って形成されている、請求項2のメモリセル。
- 前記p型ダブルチャネルトランジスタは前記第1のゲート電極の下方に形成されるn型チャネル領域と前記n型チャネル領域の下方に形成されるp型チャネル領域とを備えている、請求項1のメモリセル。
- 前記n型ダブルチャネルトランジスタは前記第2のゲート電極の下方に形成されるp型チャネル領域と前記p型チャネル領域の下方に形成されるn型チャネル領域とを備えている、請求項1のメモリセル。
- 第1のゲート電極及び第1のボディ領域と、異なるドーピングがなされた第1及び第2のチャネル領域とを備えている第1のダブルチャネルトランジスタと、
第2のゲート電極及び第2のボディ領域と、異なるドーピングがなされた第3及び第4のチャネル領域とを備えている第2のダブルチャネルトランジスタと、
前記第1及び第2のダブルチャネルトランジスタの間に位置し前記第1及び第2のボディ領域と接続するボディコンタクトと、
前記第1及び第2のダブルチャネルトランジスタの上方に形成される層間誘電体材質と、
層間誘電体材質内に形成され、前記ボディコンタクトと、前記第1及び第2のダブルチャネルトランジスタの前記第1及び第2のゲート電極と、前記第1及び第2のダブルチャネルトランジスタのソース領域とに接続する単一のコンタクト要素とを備えた半導体デバイス。 - 前記第1及び第2のダブルチャネルトランジスタは共通のアクティブ領域内に形成されている、請求項11の半導体デバイス。
- 前記第1及び第2のダブルチャネルトランジスタは異なる伝導性タイプのものである、請求項11の半導体デバイス。
- 前記ボディコンタクトはダミーゲート電極構造として設けられている、請求項11の半導体デバイス。
- 前記ダミーゲート電極構造は少なくともその側壁上に形成される金属含有材質を有している、請求項14の半導体デバイス。
- 前記半導体デバイスはメモリセルを代表し、選択トランジスタを更に備えた、請求項11の半導体デバイス。
- 前記選択トランジスタのゲート電極は前記ボディコンタクトに対して位置あわせされている、請求項16の半導体デバイス。
- 前記第1及び第2のダブルチャネルトランジスタ並びに前記選択トランジスタは前記メモリセルのトランジスタ要素の全てである、請求項16の半導体デバイス。
- アクティブ領域の上方に且つ第1のダブルチャネルトランジスタ及び第2のダブルチャネルトランジスタの間にボディコンタクトを形成することであって、前記ボディコンタクトは、前記第1及び第2のダブルチャネルトランジスタのボディ領域に接触し、前記第1及び第2のダブルチャネルトランジスタの各々は、異なるドーピングがなされた第1及び第2のチャネル領域を備えていることと、
前記ボディコンタクト並びに前記第1及び第2のダブルチャネルトランジスタの上方に層間誘電体材質を形成することと、
前記第1のダブルチャネルトランジスタの第1のゲート電極及びソース領域と前記第2のダブルチャネルトランジスタの第2のゲート電極及びソース領域と前記ボディコンタクトとに接続するように前記層間誘電体材質内にコンタクト要素を形成することとを備えた方法。 - 前記ボディコンタクト並びに前記第1及び第2のゲート電極は共通の製造シーケンスにおいて形成される、請求項19の方法。
- 請求項19の方法であって、前記ボディコンタクトを形成することは前記ボディコンタクトの電極構造の側壁部分を露出させることと当該露出させられた側壁上に金属シリサイドを形成することとを備えている方法。
- 前記第1及び第2のダブルチャネルトランジスタは前記アクティブ領域の内部及び上に形成される、請求項19の方法。
- 第2のアクティブ領域の内部及び上に選択トランジスタを形成することを更に備え、前記第1及び第2のダブルチャネルトランジスタ並びに前記選択トランジスタはスタティックRAMセルを形成するように接続される、請求項19の方法。
- 前記選択トランジスタのゲート電極はその幅方向を前記ボディコンタクトの幅方向に合わせられる、請求項23の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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DE102008045037.5 | 2008-08-29 | ||
DE102008045037A DE102008045037B4 (de) | 2008-08-29 | 2008-08-29 | Statischer RAM-Zellenaufbau und Mehrfachkontaktschema zum Anschluss von Doppelkanaltransistoren |
US12/507,879 US8183096B2 (en) | 2008-08-29 | 2009-07-23 | Static RAM cell design and multi-contact regime for connecting double channel transistors |
US12/507,879 | 2009-07-23 | ||
PCT/EP2009/006263 WO2010022974A1 (en) | 2008-08-29 | 2009-08-28 | Body contact for sram cell comprising double-channel transistors |
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JP2012501080A JP2012501080A (ja) | 2012-01-12 |
JP5499034B2 true JP5499034B2 (ja) | 2014-05-21 |
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US (2) | US8183096B2 (ja) |
EP (2) | EP2367201A3 (ja) |
JP (1) | JP5499034B2 (ja) |
KR (1) | KR20110063796A (ja) |
CN (1) | CN102138211B (ja) |
DE (1) | DE102008045037B4 (ja) |
WO (1) | WO2010022974A1 (ja) |
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US8421162B2 (en) | 2009-09-30 | 2013-04-16 | Suvolta, Inc. | Advanced transistors with punch through suppression |
US8273617B2 (en) | 2009-09-30 | 2012-09-25 | Suvolta, Inc. | Electronic devices and systems, and methods for making and using the same |
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WO2010022974A1 (en) | 2010-03-04 |
EP2319077A1 (en) | 2011-05-11 |
EP2367201A2 (en) | 2011-09-21 |
US20100052069A1 (en) | 2010-03-04 |
KR20110063796A (ko) | 2011-06-14 |
EP2319077B1 (en) | 2014-12-03 |
EP2367201A3 (en) | 2012-04-11 |
DE102008045037A1 (de) | 2010-03-04 |
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