JP2010206198A - トランジスタ性能に対するシャロートレンチアイソレーション(sti)の応力変動を低減するダミーフィル - Google Patents
トランジスタ性能に対するシャロートレンチアイソレーション(sti)の応力変動を低減するダミーフィル Download PDFInfo
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Abstract
【解決手段】チップ上に集積回路構造を形成する方法は、集積回路構造の設計からアクティブ層を抽出することと、アクティブ層の形状に適合する保護バンドを形成することとを含む。当該保護バンドは、アクティブ層を囲み、X軸方向では第1間隔で、かつY軸方向では第2間隔でアクティブ層から離れて配置される。当該方法はさらに、設計ルールに反する保護バンドの如何なる部分も除去することと、保護バンドの凸角部を除去することと、保護バンドの外側のチップの残りの空間にダミー拡散パターンを付与することとを含む。第1および第2間隔は、集積回路構造のSpiceモデル特性決定での同じ間隔として特定され得る。異なる粒度を有するダミー拡散パターンが、拡散密度がチップ上で実質的に均一になるように付与され得る。
【選択図】図6
Description
本出願は、「トランジスタ性能に対するシャロートレンチアイソレーション(STI)の応力変動を低減するダミーフィル(Dummy Fill to Reduce Shallow Trench Isolation (STI) Stress Variation on Transistor Performance)」という名称を持つ2009年2月27日に出願された米国仮特許出願番号第61/156,344号に基づくとともに、その優先権を主張し、その開示は全文ここに参照により援用される。
本出願は、「デバイス性能ドリフトを低減するためのダミーパターン設計(Dummy Pattern Design for Reducing Device Performance Drift)」という名称を持つ2008年9月16日に出願された米国特許出願連続番号第12/211,503号を参照により援用する。
本開示は一般的には集積回路に関し、より特定的には金属酸化膜半導体(MOS)デバイスに関し、更により特定的にはMOSデバイスに加えられる応力の違いに起因するMOSデバイスの性能のドリフトを低減するためのダミーパターン設計に関する。
8、10、12 ゲート電極ストリップ
14 ダミー領域
16 STI領域
18、20 MOSデバイス
202、204、206、208、402、404、406、408 ブロック層
210、212、214、216 アクティブ領域
218 ダミー拡散ストライプ
302 保護バンド
303 領域
304 保護バンドの凸領域
306 保護バンドのカットアウト領域
SL1、SW1、SL2、SW2、SL3、SW3、SL4、SW4、SL5、SW5、S1、S2、S3、SL、SW 間隔
Claims (11)
- チップ上に集積回路構造を形成する方法であって、前記方法は、
前記集積回路構造の設計から、拡散領域を有するアクティブパターンを含むアクティブ層を抽出するステップと、
前記アクティブ層の形状に適合する少なくとも1つの保護バンドを形成するステップとを含み、前記保護バンドは、ダミー拡散層であり、途切れることなく前記アクティブ層を囲み、X軸方向では第1一定間隔で、かつY軸方向では第2一定間隔で、前記アクティブ層から離れて配置され、前記方法はさらに、
設計ルールに反する、前記保護バンドの如何なる部分も除去するステップと、
前記保護バンドの凸角部を除去するステップと、
前記保護バンドの外側の前記チップの残りの空間にダミー拡散パターンを付与するステップとを含む、方法。 - 前記保護バンドを形成する前にブロック層を付与するステップを更に含み、前記ブロック層内にはダミー拡散層が付与されない、請求項1に記載の方法。
- 前記第1一定間隔は、前記集積回路構造のSpice モデル特性決定で用いられるX方向の第3一定間隔と同じであり、前記第2一定間隔は、前記集積回路構造のSpice モデル特性決定で用いられるY方向の第4一定間隔と同じである、請求項1に記載の方法。
- 設計ルールによって決められた特定の長さより長い前記保護バンドを切断するステップを更に含む、請求項1に記載の方法。
- 前記ダミー拡散パターンは異なる粒度を有する、請求項1に記載の方法。
- 前記ダミー拡散パターンは、拡散密度が前記チップ上で実質的に均一となるように付与される、請求項1に記載の方法。
- チップ上に集積回路構造を形成する方法であって、前記方法は、
前記集積回路構造の設計から、拡散領域を有するアクティブパターンを含むアクティブ層を抽出するステップと、
前記アクティブ層の形状に適合する少なくとも1つの保護バンドを形成するステップとを含み、前記保護バンドはダミー拡散層であり、前記アクティブ層を囲み、X軸方向では第1一定間隔で、かつY軸方向では第2一定間隔で前記アクティブ層から離れて配置され、前記保護バンドは、連続した保護バンドを有するために凸角部が必要とされる位置には設置されず、前記方法はさらに、
前記保護バンドの外側の前記チップの残りの空間にダミー拡散パターンを付与するステップを含む、方法。 - 設計ルールに反する前記保護バンドの如何なる部分も除去するステップを更に含む、請求項7に記載の方法。
- 前記保護バンドを形成する前にブロック層を付与するステップを更に含み、前記ブロック層内にはダミー拡散パターンが付与されない、請求項7に記載の方法。
- 前記第1一定間隔は、前記集積回路構造のSpice モデル特性決定で用いられるX方向の第3一定間隔と同じであり、前記第2一定間隔は、前記集積回路構造のSpice モデル特性決定で用いられるY方向の第4一定間隔と同じである、請求項7に記載の方法。
- 前記保護バンドが設計ルールによって決められた特定の長さより長い場合、前記保護バンドは分割される、請求項7に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US15634409P | 2009-02-27 | 2009-02-27 | |
US61/156,344 | 2009-02-27 | ||
US12/684,819 US8321828B2 (en) | 2009-02-27 | 2010-01-08 | Dummy fill to reduce shallow trench isolation (STI) stress variation on transistor performance |
US12/684,819 | 2010-01-08 |
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JP2010206198A true JP2010206198A (ja) | 2010-09-16 |
JP5252743B2 JP5252743B2 (ja) | 2013-07-31 |
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CN (1) | CN101819947B (ja) |
TW (1) | TWI419296B (ja) |
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WO2014142044A1 (ja) * | 2013-03-13 | 2014-09-18 | ピーエスフォー ルクスコ エスエイアールエル | 半導体装置 |
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TWI419296B (zh) | 2013-12-11 |
US20100223585A1 (en) | 2010-09-02 |
CN101819947A (zh) | 2010-09-01 |
US8595673B2 (en) | 2013-11-26 |
CN101819947B (zh) | 2012-05-09 |
US8321828B2 (en) | 2012-11-27 |
US20130043553A1 (en) | 2013-02-21 |
TW201032312A (en) | 2010-09-01 |
JP5252743B2 (ja) | 2013-07-31 |
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