KR101851817B1 - 반도체 장치 및 그 구동 방법 - Google Patents
반도체 장치 및 그 구동 방법 Download PDFInfo
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- KR101851817B1 KR101851817B1 KR1020137008419A KR20137008419A KR101851817B1 KR 101851817 B1 KR101851817 B1 KR 101851817B1 KR 1020137008419 A KR1020137008419 A KR 1020137008419A KR 20137008419 A KR20137008419 A KR 20137008419A KR 101851817 B1 KR101851817 B1 KR 101851817B1
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- South Korea
- Prior art keywords
- transistor
- insulating layer
- potential
- oxide
- oxide semiconductor
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Abstract
Description
도 2a 및 2b는 반도체 장치의 단면도 및 평면도.
도 3a 내지 3d는 반도체 장치의 회로도.
도 4는 반도체 장치의 회로도.
도 5는 반도체 장치의 타이밍 차트.
도 6은 반도체 장치의 타이밍 차트.
도 7의 (a) 내지 (g)는 반도체 장치의 제작 공정을 도시하는 단면도.
도 8의 (a) 내지 (e)는 반도체 장치의 제작 공정을 도시하는 단면도.
도 9의 (a) 내지 (d)는 반도체 장치의 제작 공정을 도시하는 단면도.
도 10의 (a) 내지 (d)는 반도체 장치의 제작 공정을 도시하는 단면도.
도 11의 (a) 내지 (c)는 반도체 장치의 제작 공정을 도시하는 단면도.
도 12a 및 12b는 반도체 장치의 단면도.
도 13a 내지 도 13c는 반도체 장치의 제작 공정을 도시하는 단면도.
도 14a 내지 14f는 반도체 장치를 사용한 전자 기기를 설명하기 위한 도면.
도 15a 내지 15e는 본 발명의 한 실시 형태에 따른 산화물 재료의 구조를 설명하는 도면.
도 16의 (a) 내지 (c)는 본 발명의 한 실시 형태에 따른 산화물 재료의 구조를 설명하는 도면.
도 17의 (a) 내지 (c)는 본 발명의 한 실시 형태에 따른 산화물 재료의 구조를 설명하는 도면.
도 18은 계산에 의해 얻어진 이동도의 게이트 전압 의존성을 설명하는 도면.
도 19a 내지 19c는 계산에 의해 얻어진 드레인 전류와 이동도의 게이트 전압 의존성을 설명하는 도면.
도 20a 내지 20c는 계산에 의해 얻어진 드레인 전류와 이동도의 게이트 전압 의존성을 설명하는 도면.
도 21a 내지 21c는 계산에 의해 얻어진 드레인 전류와 이동도의 게이트 전압 의존성을 설명하는 도면.
도 22a 및 22b는 계산에 사용한 트랜지스터의 단면 구조를 설명하는 도면.
도 23a 내지 23c는 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 도면.
도 24a 및 24b는 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 도면.
도 25a 및 25b는 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 도면.
도 26은 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 도면.
도 27a 및 27b는 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 도면.
도 28은 본 발명의 한 실시 형태에 따른 트랜지스터의 XRD 스펙트럼을 도시하는 그래프.
도 29는 본 발명의 한 실시 형태에 따른 트랜지스터의 특성을 도시하는 그래프.
도 30a 및 30b는 본 발명의 한 실시 형태에 따른 트랜지스터의 구조를 설명하는 도면.
도 31a 및 31b는 본 발명의 한 실시 형태에 따른 트랜지스터의 구조를 설명하는 도면.
도 32a 및 도 32b는 본 발명의 한 실시 형태에 따른 산화물 재료의 구조를 설명하는 도면.
Claims (15)
- 반도체 장치의 구동 방법으로서,
상기 반도체 장치는,
제1 게이트 전극을 포함하는 제1 트랜지스터;
절연층을 사이에 개재하여 상기 제1 트랜지스터의 소스 및 드레인 중 한쪽의 적어도 일부와 중첩하는 제2 채널 형성 영역; 및
상기 제2 채널 형성 영역 위의 제2 게이트 전극
을 포함하는 제2 트랜지스터; 및
제2 절연층을 사이에 개재하여 상기 제2 트랜지스터 위에 있는 배선을 포함하는 메모리 셀을 포함하고,
상기 제2 트랜지스터의 소스 및 드레인 중 한쪽은 상기 제1 게이트 전극과 전기적으로 접속되어서 노드를 형성하고,
상기 구동 방법은,
전하가 상기 노드에 공급되도록 상기 제2 트랜지스터를 온 상태로 하는 단계;
전하가 상기 노드에 유지되도록 상기 제2 트랜지스터를 오프 상태로 하는 단계; 및
전하가 상기 노드에 유지될 필요가 있는 기간에 적어도 제1 전위가 상기 배선에 공급될 때 제2 전위를 상기 제2 게이트 전극에 공급하는 단계
를 포함하고,
상기 제2 전위는 상기 제1 전위와 반대인 극성을 갖는, 반도체 장치의 구동 방법. - 제1항에 있어서,
상기 제2 트랜지스터는 상기 제2 게이트 전극과 상기 제2 채널 형성 영역 사이에 제2 게이트 절연층을 더 포함하고,
상기 반도체 장치는 상기 제2 트랜지스터의 소스 및 드레인 전극 중 한쪽, 상기 제2 게이트 절연층, 및 도전층을 포함하는 용량 소자를 더 포함하는, 반도체 장치의 구동 방법. - 제3항에 있어서,
상기 제1 트랜지스터의 상기 소스 및 상기 드레인 중 상기 한쪽은 상기 제2 트랜지스터의 상기 소스 및 상기 드레인 중 상기 한쪽과 전기적으로 접속되는, 반도체 장치의 구동 방법. - 반도체 장치의 구동 방법으로서,
상기 반도체 장치는,
제1 게이트 전극을 포함하는 제1 트랜지스터;
제1 절연층을 사이에 개재하여 상기 제1 트랜지스터의 소스 및 드레인 중 한쪽의 적어도 일부와 중첩하는 제2 게이트 전극; 및
상기 제2 게이트 전극 위의 제2 채널 형성 영역
을 포함하는 제2 트랜지스터; 및
제2 절연층을 사이에 개재하여 상기 제2 트랜지스터 위에 있는 배선을 포함하는 메모리 셀을 포함하고,
상기 제2 트랜지스터의 소스 및 드레인 중 한쪽은 상기 제1 게이트 전극과 전기적으로 접속되어서 노드를 형성하고,
상기 구동 방법은,
전하가 상기 노드에 공급되도록 상기 제2 트랜지스터를 온 상태로 하는 단계;
전하가 상기 노드에 유지되도록 상기 제2 트랜지스터를 오프 상태로 하는 단계; 및
전하가 상기 노드에 유지될 필요가 있는 기간에 적어도 제1 전위가 상기 배선에 공급될 때 제2 전위를 상기 제2 게이트 전극에 공급하는 단계
를 포함하고,
상기 제2 전위는 상기 제1 전위와 반대인 극성을 갖는, 반도체 장치의 구동 방법. - 제5항에 있어서,
상기 제2 트랜지스터는 상기 제2 게이트 전극과 상기 제2 채널 형성 영역 사이에 제2 게이트 절연층을 더 포함하고,
상기 반도체 장치는 상기 제1 트랜지스터의 소스 및 드레인 전극 중 한쪽, 상기 제2 게이트 절연층, 및 도전층을 포함하는 용량 소자를 더 포함하는, 반도체 장치의 구동 방법. - 제7항에 있어서,
상기 제1 트랜지스터의 상기 소스 및 상기 드레인 중 상기 한쪽은 상기 제2 트랜지스터의 상기 소스 및 상기 드레인 중 상기 한쪽과 전기적으로 접속되는, 반도체 장치의 구동 방법. - 반도체 장치의 구동 방법으로서,
상기 반도체 장치는,
복수의 비트선;
복수의 소스선;
복수의 기입 워드선;
복수의 기입-판독 워드선; 및
복수의 메모리 셀을 포함하는 메모리 셀 어레이를 포함하고,
상기 복수의 메모리 셀 중 하나는,
제1 게이트 전극, 제1 소스 영역, 제1 드레인 영역, 및 제1 채널 형성 영역을 포함하는 제1 트랜지스터;
제2 게이트 전극, 제2 소스 전극, 제2 드레인 전극, 및 상기 제1 소스 영역 및 상기 제1 드레인 영역 중 한쪽의 적어도 일부와 중첩하도록 제공된 제2 채널 형성 영역을 포함하는 제2 트랜지스터; 및
용량 소자를 포함하고,
상기 복수의 소스선 중 하나는 상기 제1 소스 영역과 전기적으로 접속되고,
상기 복수의 비트선 중 하나는 상기 제1 드레인 영역 및 상기 제2 소스 전극과 전기적으로 접속되고,
상기 복수의 기입-판독 워드선 중 하나는 상기 용량 소자의 한쪽의 전극과 전기적으로 접속되고,
상기 복수의 기입 워드선 중 하나는 상기 제2 게이트 전극과 전기적으로 접속되고,
상기 제1 게이트 전극, 상기 제2 드레인 전극, 및 상기 용량 소자의 다른 쪽 전극은 서로 전기적으로 접속되어서 전하가 유지되는 노드를 형성하고,
상기 구동 방법은,
상기 복수의 메모리 셀 중 상기 하나의 기입 기간에 적어도 제3 전위가 상기 복수의 비트선에 공급될 때 제1 전위를 상기 복수의 기입 워드선 중 하나에 공급하고 제2 전위를 비선택된 행에 있는 상기 복수의 기입 워드선 중 다른 기입 워드선에 공급하는 단계; 및
상기 복수의 메모리 셀 중 상기 하나의 판독 기간에 적어도 제5 전위가 상기 복수의 비트선에 공급될 때 제4 전위를 상기 복수의 기입 워드선에 공급하는 단계
를 포함하고,
상기 제1 전위, 상기 제3 전위 및 상기 제5 전위는 동일한 극성을 갖고,
상기 제2 전위 및 상기 제4 전위는 상기 제1 전위의 극성과 상반되는 동일한 극성을 갖는, 반도체 장치의 구동 방법. - 제1항 또는 제5항에 있어서,
상기 제1 트랜지스터의 채널 형성 영역과 상기 제2 채널 형성 영역은 상이한 반도체 재료를 포함하는, 반도체 장치의 구동 방법. - 제1항, 제5항 및 제9항 중 어느 한 항에 있어서,
상기 제2 채널 형성 영역은 산화물 반도체를 포함하는, 반도체 장치의 구동 방법. - 제9항에 있어서,
상기 제1 트랜지스터의 상기 제1 채널 형성 영역과 상기 제2 채널 형성 영역은 상이한 반도체 재료를 포함하는, 반도체 장치의 구동 방법. - 삭제
- 삭제
- 삭제
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