JPWO2018025580A1 - 半導体集積回路装置 - Google Patents
半導体集積回路装置 Download PDFInfo
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- JPWO2018025580A1 JPWO2018025580A1 JP2018531797A JP2018531797A JPWO2018025580A1 JP WO2018025580 A1 JPWO2018025580 A1 JP WO2018025580A1 JP 2018531797 A JP2018531797 A JP 2018531797A JP 2018531797 A JP2018531797 A JP 2018531797A JP WO2018025580 A1 JPWO2018025580 A1 JP WO2018025580A1
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Abstract
Description
図1は実施形態に係る半導体集積回路装置が備える回路ブロックのレイアウト例を示す平面図である。図1のレイアウトでは、X方向(図面横方向、第1方向に相当する)に並ぶ複数のセルCが、セル列CRを構成している。そして、複数のセル列CRが、Y方向(図面縦方向、第2方向に相当する)に並べて配置されている。複数のセルCの中には、NANDゲート、NORゲート等の論理機能を有するセル(以下、適宜、論理セルという)の他に、フィラーセルCFLやセル列終端セル(EndCapセルともいう)CECが含まれている。
図2は図1の部分W1の拡大図であり、本実施形態におけるスタンダードセルのレイアウト構成を示す平面図である。図2において、スタンダードセルC1は、ナノワイヤFETを備え、論理機能(ここでは2入力NOR)を有している。また、スタンダードセルC2は、論理機能を有しないフィラーセルであり、スタンダードセルC1にX方向において隣接して配置されている。スタンダードセルC1,C2において、P型トランジスタ領域PAとN型トランジスタ領域NAとがY方向に並べて配置されている。また、金属配線層M1において、スタンダードセルC1,C2の上辺においてX方向に延びる、電源電位VDDを供給する配線VDDと、スタンダードセルC1,C2の下辺においてX方向に延びる、接地電位VSSを供給する配線VSSとが配置されている。
Pp=Pg
である。
図5は図2に示すレイアウト構成の変形例を示す平面図である。図5では、フィラーセルとして、図2のスタンダードセルC2に代えて、構成が異なるスタンダードセルC2Aが配置されている。図5では、図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。
図6は図2に示すレイアウト構成の変形例を示す平面図である。図6では、フィラーセルとして、図2のスタンダードセルC2に代えて、構成が異なるスタンダードセルC2Bが配置されている。図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。
図7は図1の部分W2の拡大図であり、本実施形態におけるセル終端セルのレイアウト構成を示す平面図である。図7では、図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。図7において、スタンダードセルC1は、ナノワイヤFETを備え、論理機能(ここでは2入力NOR)を有している。スタンダードセルC1の構成は、図2のスタンダードセルC1と同様である。
上述したダミーパッドは、電源電位で固定してもよい。これにより、ダミーパッドが電気的にフローティング状態になることを回避できるので、回路の動作をより安定させることができる。また、P型トランジスタ領域のダミーパッドをVDDに固定し、N型トランジスタ領域のダミーパッドをVSSに固定してもよい。これにより、ダミーパッド間に容量が発生するため、このダミーパッドを有するフィラーセルやセル列終端セルは、容量セル、すなわち電源間デカップリングコンデンサとして機能する。したがって、電源電圧の安定化を図ることができる。
11,12,13,14 ナノワイヤ
21,22,23,24,25,26 パッド
36 ダミーゲート配線
50 ダミーパッド
50a ダミーパッド(第1ダミーパッド)
50b ダミーパッド(第2ダミーパッド)
51,52,53,54 ダミーパッド
65 ダミーゲート配線
71,72,73,74,75,76 ナノワイヤ
91,93 ダミーゲート配線
91a ダミーゲート配線(第1ダミーゲート配線)
91b ダミーゲート配線(第2ダミーゲート配線)
92 ナノワイヤ
93 ゲート配線
C スタンダードセル
C1 第1スタンダードセル
C2,C2A,C2B 第2スタンダードセル
CFL フィラーセル
CEC セル列終端セル
P11,P12,N11,N12 ナノワイヤFET
図1は実施形態に係る半導体集積回路装置が備える回路ブロックのレイアウト例を示す平面図である。図1のレイアウトでは、X方向(図面横方向、第1方向に相当する)に並ぶ複数のセルCが、セル列CRを構成している。そして、複数のセル列CRが、Y方向(図面縦方向、第2方向に相当する)に並べて配置されている。複数のセルCの中には、NANDゲート、NORゲート等の論理機能を有するセル(以下、適宜、論理セルという)の他に、フィラーセルCFLやセル列終端セル(EndCapセルともいう)CECが含まれている。
図2は図1の部分W1の拡大図であり、本実施形態におけるスタンダードセルのレイアウト構成を示す平面図である。図2において、スタンダードセルC1は、ナノワイヤFETを備え、論理機能(ここでは2入力NOR)を有している。また、スタンダードセルC2は、論理機能を有しないフィラーセルであり、スタンダードセルC1にX方向において隣接して配置されている。スタンダードセルC1,C2において、P型トランジスタ領域PAとN型トランジスタ領域NAとがY方向に並べて配置されている。また、金属配線層M1において、スタンダードセルC1,C2の上辺においてX方向に延びる、電源電位VDDを供給する配線VDDと、スタンダードセルC1,C2の下辺においてX方向に延びる、接地電位VSSを供給する配線VSSとが配置されている。
Pp=Pg
である。
図5は図2に示すレイアウト構成の変形例を示す平面図である。図5では、フィラーセルとして、図2のスタンダードセルC2に代えて、構成が異なるスタンダードセルC2Aが配置されている。図5では、図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。
図6は図2に示すレイアウト構成の変形例を示す平面図である。図6では、フィラーセルとして、図2のスタンダードセルC2に代えて、構成が異なるスタンダードセルC2Bが配置されている。図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。
図7は図1の部分W2の拡大図であり、本実施形態におけるセル終端セルのレイアウト構成を示す平面図である。図7では、図2と共通の構成要素には図2と同一の符号を付しており、ここではその詳細な説明を省略する場合がある。図7において、スタンダードセルC1は、ナノワイヤFETを備え、論理機能(ここでは2入力NOR)を有している。スタンダードセルC1の構成は、図2のスタンダードセルC1と同様である。
上述したダミーパッドは、電源電位で固定してもよい。これにより、ダミーパッドが電気的にフローティング状態になることを回避できるので、回路の動作をより安定させることができる。また、P型トランジスタ領域のダミーパッドをVDDに固定し、N型トランジスタ領域のダミーパッドをVSSに固定してもよい。これにより、ダミーパッド間に容量が発生するため、このダミーパッドを有するフィラーセルやセル列終端セルは、容量セル、すなわち電源間デカップリングコンデンサとして機能する。したがって、電源電圧の安定化を図ることができる。
11,12,13,14 ナノワイヤ
21,22,23,24,25,26 パッド
36 ダミーゲート配線
50 ダミーパッド
50a ダミーパッド(第1ダミーパッド)
50b ダミーパッド(第2ダミーパッド)
51,52,53,54 ダミーパッド
65 ダミーゲート配線
71,72,73,74,75,76 ナノワイヤ
91,93 ダミーゲート配線
91a ダミーゲート配線(第1ダミーゲート配線)
91b ダミーゲート配線(第2ダミーゲート配線)
92 ナノワイヤ
93 ゲート配線
C スタンダードセル
C1 第1スタンダードセル
C2,C2A,C2B 第2スタンダードセル
CFL フィラーセル
CEC セル列終端セル
P11,P12,N11,N12 ナノワイヤFET
Claims (12)
- ナノワイヤFET(Field Effect Transistor)を備え、論理機能を有する第1スタンダードセルと、
前記第1スタンダードセルに第1方向において隣接して配置されており、論理機能を有しない第2スタンダードセルとを備え、
前記ナノワイヤFETは、
前記第1方向に延びる、1つ、または、並列に設けられた複数の、ナノワイヤと、
前記ナノワイヤの前記第1方向における両端にそれぞれ設けられ、下面が前記ナノワイヤの下面よりも低い位置にあり、前記ナノワイヤと接続された一対のパッドとを備え、
前記第2スタンダードセルは、
回路の論理機能に寄与しないパッドである、ダミーパッドを備えている
ことを特徴とする半導体集積回路装置。 - 請求項1記載の半導体集積回路装置において、
前記ダミーパッドは、前記パッドと、前記第1方向の寸法であるパッド幅、前記第1方向と垂直をなす第2方向の寸法であるパッド高さ、および、前記第2方向における配置位置のうち少なくともいずれか1つが同一である
ことを特徴とする半導体集積回路装置。 - 請求項1記載の半導体集積回路装置において、
前記ダミーパッドおよび前記パッドは、前記第1方向において、同一ピッチで配置されている
ことを特徴とする半導体集積回路装置。 - 請求項1記載の半導体集積回路装置において、
前記ダミーパッドは、前記第1方向において並べて配置された第1および第2ダミーパッドを含み、
前記第2スタンダードセルは、
前記第1ダミーパッドと前記第2ダミーパッドとの間に設けられ、前記第1方向に延びる、1つ、または、並列に設けられた複数の、ナノワイヤを備えている
ことを特徴とする半導体集積回路装置。 - 請求項1記載の半導体集積回路装置において、
前記第2スタンダードセルは、
前記第1方向におけるセル端に配置されたダミーゲート配線と、
前記ダミーパッドと前記ダミーゲート配線との間に設けられ、前記第1方向に延びる、1つ、または、並列に設けられた複数の、ナノワイヤとを備えている
ことを特徴とする半導体集積回路装置。 - 請求項1記載の半導体集積回路装置において、
前記第1および第2スタンダードセルは、第1および第2の電源電位が与えられており、
前記ダミーパッドは、前記第1の電源電位が与えられている第1ダミーパッドを含む
ことを特徴とする半導体集積回路装置。 - 請求項6記載の半導体集積回路装置において、
前記第1ダミーパッドは、前記第1方向に並ぶ2個のダミーパッドを含み、
前記第2スタンダードセルは、前記2個のダミーパッド同士の間を、前記第1方向と垂直をなす第2方向に延びるダミーゲート配線を備え、
前記ダミーゲート配線は、前記第2の電源電位が与えられている
ことを特徴とする半導体集積回路装置。 - 請求項6記載の半導体集積回路装置において、
前記第1ダミーパッドは、前記第1方向に並ぶ2個のダミーパッドを含み、
前記第2スタンダードセルは、
前記2個のダミーパッド同士の間に設けられ、前記第1方向に延びる、1つ、または、並列に設けられた複数の、第2ナノワイヤと、
前記第1方向と垂直をなす第2方向に延び、前記第2ナノワイヤの前記第1方向における所定範囲において、前記第2ナノワイヤの周囲を囲うように設けられたゲート配線とを備え、
前記ゲート配線は、前記第2の電源電位が与えられている
ことを特徴とする半導体集積回路装置。 - 請求項6記載の半導体集積回路装置において、
前記ダミーパッドは、前記第2の電源電位が与えられている第2ダミーパッドを含む
ことを特徴とする半導体集積回路装置。 - 請求項9記載の半導体集積回路装置において、
前記第1ダミーパッドは、前記第1方向に並ぶ2個のダミーパッドを含み、
前記第2ダミーパッドは、前記第1方向に並ぶ2個のダミーパッドを含み、
前記第2スタンダードセルは、
前記第1ダミーパッドに含まれた前記2個のダミーパッド同士の間を、前記第1方向と垂直をなす第2方向に延びる、第1ダミーゲート配線と、
前記第2ダミーパッドに含まれた前記2個のダミーパッド同士の間を、前記第2方向に延びる、第2ダミーゲート配線とを備え、
前記第1ダミーゲート配線は、前記第2の電源電位が与えられており、
前記第2ダミーゲート配線は、前記第1の電源電位が与えられている
ことを特徴とする半導体集積回路装置。 - 請求項10記載の半導体集積回路装置において、
前記第1ダミーゲート配線と前記第2ダミーゲート配線とは、前記第2方向に延びる同一直線上に、配置されている
ことを特徴とする半導体集積回路装置。 - 請求項1〜11のうちいずれか1項記載の半導体集積回路装置において、
前記第2スタンダードセルは、フィラーセル、または、セル列終端セルである
ことを特徴とする半導体集積回路装置。
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