KR100577923B1 - 반도체 집적회로장치의 제조방법 - Google Patents
반도체 집적회로장치의 제조방법 Download PDFInfo
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- KR100577923B1 KR100577923B1 KR1020040066682A KR20040066682A KR100577923B1 KR 100577923 B1 KR100577923 B1 KR 100577923B1 KR 1020040066682 A KR1020040066682 A KR 1020040066682A KR 20040066682 A KR20040066682 A KR 20040066682A KR 100577923 B1 KR100577923 B1 KR 100577923B1
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Abstract
Description
Claims (20)
- (a) 반도체 기판상에 복수의 제1 절연막을 형성하는 공정,(b) 상기 복수의 제1 절연막 사이의 반도체 기판상에 제2 절연막을 형성하는 공정,(c) 상기 복수의 제1 절연막 상 및 상기 제2 절연막 상에 제3 절연막을 퇴적하는 공정,(d) 상기 제3 절연막의 일부를 패터닝하는 공정,(e) 상기 (d) 공정 후에, 상기 제3 절연막 상에 제1 도전체막을 형성하는 공정을 가지며,상기 (d) 공정에 있어서, 상기 제3 절연막의 에칭 레이트는, 상기 제1 절연막의 에칭 레이트보다도 큰 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 반도체 집적회로장치의 제조방법은,(f) 상기 제3 절연막이 패터닝된 영역의 반도체 기판상의 제2 절연막을 제거하는 공정,(g) 상기 (f) 공정 후에, 상기 제2 절연막이 제거된 영역의 반도체 기판 상에 제4 절연막을 형성하는 공정,(h) 상기 제4 절연막 상에 제2 도전체막을 형성하는 공정을 더 가지며,상기 제4 절연막은 상기 반도체 집적회로장치의 제1 MISFET의 게이트 절연막을 구성하고,상기 제2 및 제3 절연막은 상기 반도체 집적회로장치의 제2 MISFET의 게이트 절연막을 구성하는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 2 항에 있어서,상기 (d) 공정에서 상기 (f) 공정까지의 동안, 상기 패터닝된 제3 절연막의 하부에 형성되어 있던 상기 제1 및 제2 절연막은 남아 있는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 2 항 또는 제 3 항에 있어서,상기 제2 및 제3 절연막의 막두께의 합은, 상기 제4 절연막의 막두께보다도 두꺼운 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (c) 공정에 있어서, 상기 제3 절연막은 CVD법에 의해 형성하는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 5 항에 있어서,상기 (d) 공정 후에는 열처리공정이 행해지는 것을 특징으로 하는 반도체 집 적회로장치의 제조방법.
- 제 6 항에 있어서,상기 열처리공정에 의해 상기 제3 절연막의 막질이 향상하는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (a) 공정에 있어서, 상기 제1 절연막은 열산화법에 의해 형성하는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (a) 공정은,(a1) 상기 반도체 기판에 홈을 형성하는 공정,(a2) 상기 홈 내에 제1 절연막을 매립하는 공정을 가지는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 9 항에 있어서,상기 (a2) 공정에 있어서, 상기 제1 절연막은 CVD법에 의해 형성된 막인 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 10 항에 있어서,상기 (a2) 공정 후에, 열처리공정이 행해지는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (b) 공정에 있어서, 상기 제2 절연막은 열산화법에 의해 형성하는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (d) 공정에 있어서, 상기 패터닝은 상기 제1 절연막 상에서 행해지는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 (d) 공정에 있어서, 상기 패터닝은, 상기 제3 절연막 상에 형성한 레지스트막을 마스크로 하여 행해지는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 제3 절연막의 에칭 레이트는, 상기 제2 절연막의 에칭 레이트보다도 큰 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 제3 절연막의 막두께는, 상기 제2 절연막의 막두께보다도 두꺼운 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 제1 절연막은 산화실리콘막인 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 제2 절연막은 산화실리콘막인 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- 제 1 항에 있어서,상기 제3 절연막은 산화실리콘막인 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
- (a) 반도체 기판 상에, 복수의 제1 절연막을 형성하는 공정,(b) 상기 복수의 제1 절연막 사이의 반도체 기판상에, 제2 절연막을 형성하는 공정,(c) 상기 복수의 제1 절연막 상 및 상기 제2 절연막 상에, 제3 절연막을 퇴적하는 공정,(d) 상기 제1 절연막 상에 상기 제3 절연막의 일부를 남기도록, 상기 제3 절연막을 가공하는 공정,(e) 상기 (d) 공정 후에, 상기 제3 절연막 상에 제1 도전체막을 형성하는 공정을 가지는 것을 특징으로 하는 반도체 집적회로장치의 제조방법.
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US6780717B2 (en) | 2004-08-24 |
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US20030104671A1 (en) | 2003-06-05 |
US20040251505A1 (en) | 2004-12-16 |
US7224037B2 (en) | 2007-05-29 |
KR100577922B1 (ko) | 2006-05-10 |
US7790554B2 (en) | 2010-09-07 |
KR20040082347A (ko) | 2004-09-24 |
US20020064917A1 (en) | 2002-05-30 |
US20090209078A1 (en) | 2009-08-20 |
US7541661B2 (en) | 2009-06-02 |
US20070096247A1 (en) | 2007-05-03 |
TW535281B (en) | 2003-06-01 |
KR100586264B1 (ko) | 2006-06-07 |
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KR20040078093A (ko) | 2004-09-08 |
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