KR102487549B1 - 트랜지스터들을 포함하는 반도체 소자 - Google Patents
트랜지스터들을 포함하는 반도체 소자 Download PDFInfo
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Abstract
Description
도 2 내지 도 10은 본 발명의 실시 예에 따른 반도체 소자의 제조 방법을 단계적으로 나타내는 단면도들이고, 도 11은 본 발명의 실시 예에 따른 반도체 소자를 설명하기 위한 단면도이다.
도 12는 본 발명의 실시 예에 따른 반도체 소자를 설명하기 위한 단면도이다.
도 13은 본 발명의 실시 예에 따른 반도체 소자를 설명하기 위한 단면도이다.
도 14는 본 발명의 실시 예에 따른 반도체 소자를 설명하기 위한 단면도이다.
Claims (10)
- 제1 영역, 제2 영역, 및 제3 영역을 가지는 기판과,
상기 제1 영역에서 상기 기판으로부터 돌출되며 제1 도전형의 불순물이 도핑된 제1 채널 영역을 가지는 제1 핀형 활성 영역과, 상기 제1 핀형 활성 영역과 교차하는 방향으로 연장되며 제1 하부 금속 함유층, 및 상기 제1 하부 금속 함유층 상에 제1 상부 금속 함유층으로 이루어지는 제1 게이트 라인이 구성하는 제1 트랜지스터와,
상기 제2 영역에서 상기 기판으로부터 돌출되며 상기 제1 도전형의 불순물이 도핑된 제2 채널 영역을 가지는 제2 핀형 활성 영역과, 상기 제2 핀형 활성 영역과 교차하는 방향으로 연장되며 상기 제1 게이트 라인과 동일한 폭을 가지고, 제2 하부 금속 함유층, 및 상기 제2 하부 금속 함유층 상에 제2 상부 금속 함유층으로 이루어지는 제2 게이트 라인이 구성하는 제2 트랜지스터와,
상기 제3 영역에서 상기 기판으로부터 돌출되며 상기 제1 도전형과 다른 제2 도전형의 불순물이 도핑된 제3 채널 영역을 가지는 제3 핀형 활성 영역과, 상기 제1 게이트 라인과 동일한 폭을 가지고 상기 제3 핀형 활성 영역과 교차하는 방향으로 연장되며, 제3 하부 금속 함유층, 및 상기 제3 하부 금속 함유층 상에 제3 상부 금속 함유층으로 이루어지는 제3 게이트 라인이 구성하는 제3 트랜지스터를 포함하고,
상기 제1 상부 금속 함유층의 최상단 및 상기 제2 하부 금속 함유층의 최상단 각각은, 상기 제1 하부 금속 함유층의 최상단보다 높은 레벨에 위치하고,
상기 제3 하부 금속 함유층의 최상단과 상기 제1 하부 금속 함유층의 최상단은 동일 레벨에 위치하고, 상기 제3 상부 금속 함유층의 최상단과 상기 제1 상부 금속 함유층의 최상단은 동일 레벨에 위치하는 반도체 소자. - 제1 항에 있어서,
상기 제2 상부 금속 함유층의 최상단과 상기 제2 하부 금속 함유층의 최상단은 동일 레벨을 가지는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제1 및 제2 하부 금속 함유층은, 상기 제1 및 제2 상부 금속 함유층보다 작은 일함수를 가지는 물질로 이루어지고,
상기 제1 상부 금속 함유층과 상기 제2 상부 금속 함유층은 동일한 물질로 이루어지는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제1 게이트 라인의 연장 방향에 수직한 평면에서의 상기 제1 하부 금속 함유층의 단면과, 상기 제2 게이트 라인의 연장 방향에 수직한 평면에서의 상기 제2 하부 금속 함유층의 단면은 각각 U자 형상을 가지는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제1 하부 금속 함유층의 두께는 상기 제2 하부 금속 함유층의 두께보다 작은 값을 가지는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제1 및 제2 트랜지스터는 p형 MOSFET이고,
상기 제2 트랜지스터의 동작 전압은 상기 제1 트랜지스터의 동작 전압보다 작은 값을 가지는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제1 게이트 라인은 상기 제1 상부 금속 함유층 상에 제1 도전성 배리어막을 더 포함하고,
상기 제3 게이트 라인은, 상기 제3 상부 금속 함유층 상에 상기 제1 도전성 배리어막과 동일 물질로 이루어지는 제2 도전성 배리어막을 더 포함하고,
상기 제1 도전성 배리어막의 최상단과 상기 제2 도전성 배리어막의 최상단은 동일 레벨에 위치하고, 상기 제1 도전성 배리어막의 최하단은 상기 제2 도전성 배리어막의 최하단보다 높은 레벨에 위치하는 것을 특징으로 하는 반도체 소자. - 제7 항에 있어서,
상기 제1 도전성 배리어막의 최상단과 상기 제1 상부 금속 함유층의 최상단은 동일 레벨에 위치하는 것을 특징으로 하는 반도체 소자. - 제1 항에 있어서,
상기 제2 게이트 라인의 높이는 상기 제1 게이트 라인의 높이보다 큰 값을 가지는 것을 특징으로 하는 반도체 소자. - 제1 영역, 제2 영역, 및 제3 영역을 가지는 기판과,
상기 제1 영역에서 제1 하부 금속 함유층, 및 상기 제1 하부 금속 함유층 상에 제1 상부 금속 함유층으로 이루어지는 제1 게이트 라인이 구성하는 제1 트랜지스터와,
상기 제2 영역에서 제2 하부 금속 함유층, 및 상기 제2 하부 금속 함유층 상에 제2 상부 금속 함유층으로 이루어지며, 상기 제1 게이트 라인과 동일한 폭을 가지는 제2 게이트 라인이 구성하 제2 트랜지스터와,
상기 제3 영역에서 제3 하부 금속 함유층, 및 상기 제3 하부 금속 함유층 상에 제3 상부 금속 함유층으로 이루어지며, 상기 제2 게이트 라인보다 큰 폭을 가지는 제3 게이트 라인이 구성하는 제3 트랜지스터를 포함하고,
상기 제1 상부 금속 함유층의 최상단, 상기 제2 하부 금속 함유층의 최상단 및 상기 제3 하부 금속 함유층의 최상단 각각은, 상기 제1 하부 금속 함유층의 최상단보다 높은 레벨에 위치하고,
상기 제3 게이트 라인의 높이는 상기 제2 게이트 라인의 높이보다 작은 값을 가지는 반도체 소자.
상기 제3 게이트 라인의 높이는 상기 제2 게이트 라인의 높이보다 작은 값을 가지는 것을 특징으로 하는 반도체 소자.
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