KR20070013073A - 코너보호패턴을 갖는 공유콘택구조, 반도체소자, 및 그제조방법들 - Google Patents
코너보호패턴을 갖는 공유콘택구조, 반도체소자, 및 그제조방법들 Download PDFInfo
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Abstract
Description
Claims (24)
- 기판 내에 배치된 활성영역;상기 활성영역 상에 배치되고 서로마주보는 제 1 및 제 2 측벽들을 갖는 게이트전극;상기 게이트전극의 상기 제 1 측벽을 덮는 절연성스페이서;상기 제 1 측벽에 인접한 상기 활성영역 내에 배치되고, 상기 제 2 측벽의 반대편에 제공되는 소스/드레인 영역;상기 소스/드레인 영역 및 상기 절연성스페이서에 인접하여 배치된 코너보호패턴;상기 코너보호패턴을 갖는 기판 상을 덮는 층간절연막; 및상기 층간절연막을 관통하여 상기 게이트전극, 상기 코너보호패턴 및 상기 소스/드레인 영역에 접촉하는 공유콘택플러그를 포함하는 공유콘택구조.
- 제 1 항에 있어서,상기 절연성스페이서 하부의 상기 활성영역 내에 형성되며 상기 소스/드레인 영역에 접촉되는 소스/드레인 연장부(source/drain extension)를 더 포함하는 공유콘택구조.
- 제 2 항에 있어서,상기 소스/드레인 연장부는 상기 소스/드레인 영역과 동일한 도전형의 불순물영역인 것을 특징으로 하는 공유콘택구조.
- 제 2 항에 있어서,상기 코너보호패턴은 단면도 상에서 보여 질 때 상기 소스/드레인 영역의 상기 절연성스페이서에 인접한 가장자리와 중첩되는 영역을 갖는 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 코너보호패턴은 상기 소스/드레인 영역의 상기 절연성스페이서에 인접한 가장자리 상부에 배치되고 상기 절연성스페이서의 측벽에 접촉하는 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 코너보호패턴은 질화막인 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 절연성스페이서는 상기 제 1 측벽을 덮는 내측 스페이서; 및상기 내측 스페이서의 외측벽을 덮는 외측 스페이서를 포함하되, 상기 내측 스페이서는 산화막이고, 상기 외측 스페이서는 질화막인 것을 특징으로 하는 공유 콘택구조.
- 제 1 항에 있어서,상기 소스/드레인 영역은 고농도 불순물영역; 및상기 고농도 불순물영역 상에 적층된 소스/드레인 금속실리사이드층을 포함하는 것을 특징으로 하는 공유콘택구조.
- 제 8 항에 있어서,상기 코너보호패턴은 상기 소스/드레인 금속실리사이드층 상에 제공되는 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 층간절연막 및 상기 기판 사이에 개재된 식각저지막을 더 포함하되, 상기 식각저지막은 상기 층간절연막에 대하여 식각선택비를 갖는 절연막인 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 제 2 측벽에 인접한 상기 기판 내에 배치되고, 상기 제 1 측벽의 반대편에 제공되는 소자분리막을 더 포함하는 것을 특징으로 하는 공유콘택구조.
- 제 1 항에 있어서,상기 공유콘택플러그는 도전층; 및상기 도전층의 측벽 및 바닥을 둘러싸는 장벽금속층을 포함하는 것을 특징으로 하는 공유콘택구조.
- 기판 상에 배치되어 활성영역을 한정하는 소자분리막;상기 활성영역 상을 가로지르도록 배치되고 서로마주보는 제 1 및 제 2 측벽들을 갖는 게이트전극;상기 게이트전극의 상기 제 1 측벽을 덮는 절연성스페이서;상기 절연성스페이서 하부의 상기 활성영역 내에 배치된 저농도 불순물영역;상기 제 1 측벽에 인접한 상기 활성영역 내에 배치되고, 상기 제 2 측벽의 반대편에 제공되며, 상기 저농도 불순물영역과 접촉되는 고농도 불순물영역;상기 고농도 불순물영역 상에 배치된 소스/드레인 금속실리사이드층; 및상기 소스/드레인 금속실리사이드층 및 상기 절연성스페이서에 인접하여 배치된 코너보호패턴을 포함하는 반도체소자.
- 제 13 항에 있어서,상기 코너보호패턴은 단면도 상에서 보여 질 때 상기 소스/드레인 금속실리사이드층의 상기 절연성스페이서에 인접한 가장자리와 중첩되는 영역을 갖는 것을 특징으로 하는 반도체소자.
- 제 13 항에 있어서,상기 코너보호패턴은 상기 소스/드레인 금속실리사이드층의 상기 절연성스페이서에 인접한 가장자리 상부에 배치되고 상기 절연성스페이서의 측벽에 접촉하는 것을 특징으로 하는 반도체소자.
- 제 13 항에 있어서,상기 코너보호패턴을 갖는 기판 상을 덮는 층간절연막; 및상기 층간절연막을 관통하여 상기 코너보호패턴 및 상기 소스/드레인 금속실리사이드층에 접촉하는 콘택플러그를 더 포함하는 반도체소자.
- 기판 상에 서로마주보는 제 1 및 제 2 측벽들을 갖는 게이트패턴을 형성하고,상기 기판 내의 상기 제 1 측벽에 인접하고 상기 제 2 측벽의 반대편에 위치한 곳에 저농도 불순물영역을 형성하고,상기 제 1 측벽을 덮는 절연성스페이서를 형성하고,상기 기판 내의 상기 제 1 측벽에 인접하고 상기 제 2 측벽의 반대편에 위치한 곳에 고농도불순물 영역을 형성하고,상기 고농도불순물 영역 및 상기 절연성스페이서에 인접한 곳에 상기 절연성스페이서의 측벽과 접촉하는 코너보호패턴을 형성하는 것을 포함하는 반도체소자의 제조방법.
- 제 17 항에 있어서,상기 게이트패턴을 형성하기 전에상기 기판 내에 활성영역을 한정하는 소자분리막을 형성하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 17 항에 있어서,상기 코너보호패턴은 질화막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 17 항에 있어서,상기 코너보호패턴을 형성한 후,상기 기판 상에 층간절연막을 형성하고,상기 층간절연막을 관통하는 콘택플러그를 형성하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 17 항에 있어서,상기 코너보호패턴을 형성하기 전에,상기 게이트패턴의 상부표면에 게이트 금속실리사이드층을 형성하고, 상기 고농도 불순물영역의 상부표면에 소스/드레인 금속실리사이드층을 형성하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 21 항에 있어서,상기 코너보호패턴을 형성하는 것은,상기 절연성스페이서 및 상기 소스/드레인 금속실리사이드층을 갖는 기판 상에 상기 질화막을 형성하고,상기 소스/드레인 금속실리사이드층이 노출될 때 까지 상기 질화막을 이방성식각하는 것을 포함하는 반도체소자의 제조방법.
- 제 21 항에 있어서,상기 콘택플러그는 상기 코너보호패턴 및 상기 소스/드레인 금속실리사이드층에 접촉하도록 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 21 항에 있어서,상기 콘택플러그는 상기 게이트 금속실리사이드층, 상기 코너보호패턴 및 상기 소스/드레인 금속실리사이드층에 접촉하도록 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
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US11/377,455 US7781282B2 (en) | 2005-07-25 | 2006-03-17 | Shared contact structure, semiconductor device and method of fabricating the semiconductor device |
TW095110011A TWI297208B (en) | 2005-07-25 | 2006-03-23 | Shared contact structure, semiconductor device and method of fabricating the semiconductor device |
US12/805,226 US8114730B2 (en) | 2005-07-25 | 2010-07-20 | Shared contact structure, semiconductor device and method of fabricating the semiconductor device |
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