KR20100094583A - 반도체 장치 - Google Patents
반도체 장치 Download PDFInfo
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- KR20100094583A KR20100094583A KR1020107015979A KR20107015979A KR20100094583A KR 20100094583 A KR20100094583 A KR 20100094583A KR 1020107015979 A KR1020107015979 A KR 1020107015979A KR 20107015979 A KR20107015979 A KR 20107015979A KR 20100094583 A KR20100094583 A KR 20100094583A
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- 239000004065 semiconductor Substances 0.000 title claims description 97
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- 238000000034 method Methods 0.000 claims description 50
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- H01L21/8232—Field-effect technology
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Abstract
Description
도 2는 본 발명의 제 1 실시예에 의한 반도체 장치의 구조를 나타낸 개략 단면도.
도 3은 본 발명의 제 1 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 1 공정 단면도.
도 4는 본 발명의 제 1 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 2 공정 단면도.
도 5는 본 발명의 제 1 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 3 공정 단면도.
도 6은 본 발명의 제 1 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 4 공정 단면도.
도 7은 본 발명의 제 1 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 5 공정 단면도.
도 8은 익스텐션 영역에서의 불순물 농도의 깊이 방향 분포를 나타낸 그래프.
도 9는 본 발명의 제 2 실시예에 의한 반도체 장치의 구조를 나타낸 개략 단면도.
도 10은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 1 공정 단면도.
도 11은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 2 공정 단면도.
도 12는 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 3 공정 단면도.
도 13은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 4 공정 단면도.
도 14는 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 5 공정 단면도.
도 15는 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 6 공정 단면도.
도 16은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 7 공정 단면도.
도 17은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 8 공정 단면도.
도 18은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 9 공정 단면도.
도 19는 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 10 공정 단면도.
도 20은 본 발명의 제 2 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 11 공정 단면도.
도 21은 본 발명의 제 2 실시예에 의한 반도체 장치 및 그 제조 방법의 효과를 나타낸 도면.
도 22는 본 발명의 제 3 실시예에 의한 반도체 장치의 구조를 나타낸 개략 단면도.
도 23은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 1 공정 단면도.
도 24는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 2 공정 단면도.
도 25는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 3 공정 단면도.
도 26은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 4 공정 단면도.
도 27은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 5 공정 단면도.
도 28은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 6 공정 단면도.
도 29는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 7 공정 단면도.
도 30은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 8 공정 단면도.
도 31은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 9 공정 단면도.
도 32는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 10 공정 단면도.
도 33은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 11 공정 단면도.
도 34는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 12 공정 단면도.
도 35는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 13 공정 단면도.
도 36은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 14 공정 단면도.
도 37은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 15 공정 단면도.
도 38은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 16 공정 단면도.
도 39는 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 17 공정 단면도.
도 40은 본 발명의 제 3 실시예에 의한 반도체 장치의 제조 방법을 나타낸 제 18 공정 단면도.
12 : 소자 분리막
l4, 84, 88, 136 : 실리콘 산화막
16, 20, 26, 30, 36, 42, 52, 56, 60, 64, 82, 86, 90, 110, 114, 118, 124, 128, 132, 138, 148, 152 : 포토레지스트막
18 : n형 매립 불순물층
22, 24, 28 : p형 웰용 불순물층
32, 34 : n형 웰용 불순물층
38, 44, 54, 58, 62, 66 : 임계값 전압 제어용 불순물층
40 : 채널 스톱층
46 : 터널 산화막
48 : 부유 게이트
50 : ONO막
68, 72, 76 : p형 웰
70, 74, 78, 80 : n형 웰
92, 94, 96 : 게이트 절연막
98 : 폴리실리콘막
100, 136 : 실리콘 질화막
102 : 컨트롤 게이트 전극
104, 150, 154 : 소스/드레인 영역
106, 144 : 사이드 월 스페이서
108 : 게이트 전극
112, 116, 122, 126, 130, 134 : 익스텐션
12O : 밸러스트 저항용 불순물층
146 : 살리사이드 블록
156 : 실리사이드막
158 : 절연막
160 : 전극 플러그
162 : 배선
Claims (5)
- 반도체 기판 위에 형성되고, 제 1 게이트 절연막과, 상기 제 1 게이트 절연막 위에 형성된 제 1 게이트 전극과, 상기 반도체 기판 내에 형성되며, 상기 제 1 게이트 전극에 정합(整合)하여 형성된 LDD 영역 또는 익스텐션 영역을 갖는 제 1 소스/드레인 영역을 갖는 제 1 MIS 트랜지스터와,
상기 제 1 소스/드레인 영역에 접속하여 상기 반도체 기판 내에 형성된 밸러스트 저항과,
상기 밸러스트 저항 위에 형성되고, 상기 제 1 게이트 절연막보다 얇은 제 3 게이트 절연막과,
상기 제 3 게이트 절연막 위에 형성된 살리사이드 블록 절연막을 갖고,
상기 제 3 게이트 절연막 아래에 있어서의 상기 밸러스트 저항의 불순물 농도는, 상기 LDD 영역 또는 상기 익스텐션 영역의 불순물 농도보다도 높은 것을 특징으로 하는 반도체 장치. - 제 1 항에 있어서,
상기 반도체 기판 위에 형성되고, 상기 제 1 게이트 절연막보다도 얇은 제 2 게이트 절연막과, 상기 제 2 게이트 절연막 위에 형성된 제 2 게이트 전극과, 상기 반도체 기판 내에 형성된 제 2 소스/드레인 영역을 갖는 제 2 MIS 트랜지스터를 더 갖고,
상기 제 3 게이트 절연막의 막 두께는 상기 제 2 게이트 절연막의 막 두께 이하인 것을 특징으로 하는 반도체 장치. - 제 2 항에 있어서,
상기 제 1 소스/드레인 영역은 상기 LDD 영역 또는 익스텐션 영역을 형성하는 제 1 불순물층을 가지며,
상기 제 2 소스/드레인 영역은 상기 제 2 게이트 전극에 정합하여 형성된 제 2 불순물층을 가지며,
상기 밸러스트 저항은 상기 제 1 불순물층과 동시에 형성된 제 3 불순물층과, 상기 제 2 불순물층과 동시에 형성된 제 4 불순물층에 의해 구성되어 있는 것을 특징으로 하는 반도체 장치. - 제 3 항에 있어서,
상기 제 2 불순물층은 상기 제 2 소스/드레인 영역의 LDD 영역 또는 익스텐션 영역인 것을 특징으로 하는 반도체 장치. - 제 2 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 제 2 게이트 전극의 측벽 부분에 형성된 측벽 절연막을 더 가지며,
상기 제 3 게이트 절연막의 막 두께와, 상기 측벽 절연막 아래에서의 상기 제 2 게이트 절연막의 막 두께가 동일한 것을 특징으로 하는 반도체 장치.
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