KR100642632B1 - 반도체소자의 제조방법들 및 그에 의해 제조된 반도체소자들 - Google Patents
반도체소자의 제조방법들 및 그에 의해 제조된 반도체소자들 Download PDFInfo
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- KR100642632B1 KR100642632B1 KR1020040029118A KR20040029118A KR100642632B1 KR 100642632 B1 KR100642632 B1 KR 100642632B1 KR 1020040029118 A KR1020040029118 A KR 1020040029118A KR 20040029118 A KR20040029118 A KR 20040029118A KR 100642632 B1 KR100642632 B1 KR 100642632B1
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000002093 peripheral effect Effects 0.000 claims abstract description 163
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 26
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- 150000002500 ions Chemical class 0.000 claims description 14
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- 238000000059 patterning Methods 0.000 claims 4
- 230000005669 field effect Effects 0.000 abstract description 21
- 230000010354 integration Effects 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
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- 238000005468 ion implantation Methods 0.000 description 8
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
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- 238000005520 cutting process Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
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- 239000010703 silicon Substances 0.000 description 1
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Abstract
Description
Claims (20)
- 셀 영역 및 주변회로 영역을 갖는 반도체기판을 준비하고,상기 반도체기판의 소정영역에 트렌치 소자분리막을 형성하여 상기 셀 영역 및 상기 주변회로 영역 내에 각각 셀 활성영역 및 주변 활성영역을 한정하되, 상기 셀 활성영역은 상기 주변 활성영역보다 작은 폭을 갖도록 한정되고,상기 트렌치 소자분리막 및 상기 활성영역들 상에 마스크층을 형성하고,상기 마스크층을 패터닝하여 상기 셀 활성영역의 상부를 가로지르는 셀 게이트 개구부를 형성하고,상기 패터닝된 마스크층을 식각마스크로 사용하여 상기 트렌치 소자분리막을 식각하여 상기 셀 활성영역의 측벽들 및 상부면을 부분적으로 노출시키는 셀 게이트 그루브를 형성하고,상기 셀 게이트 그루브를 채우는 절연된 셀 게이트전극을 형성하고,상기 셀 게이트 전극을 갖는 반도체기판 상에 셀 게이트보호막을 형성하고,상기 셀 게이트보호막 및 상기 패터닝된 마스크층을 식각하여 상기 주변 활성영역을 가로지르는 주변 게이트 개구부를 형성하고,상기 주변 게이트 개구부 내에 절연된 주변 게이트전극을 형성하는 것을 포함하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 마스크층은 버퍼층, 연마저지막 및 하드마스크막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 2 항에 있어서,상기 하드마스크막은 실리콘산화막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 셀 게이트 그루브를 형성한 후,노출된 상기 셀 활성영역에 채널이온을 주입하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 절연된 셀 게이트전극은 차례로 적층된 셀 게이트절연막 및 셀 게이트전극막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 셀 게이트 보호막은 고밀도 플라즈마 산화막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 주변 게이트 개구부를 형성한 후,상기 주변 활성영역에 채널이온을 주입하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 1 항에 있어서,상기 절연된 주변 게이트전극은 차례로 적층된 주변 게이트절연막 및 주변 게이트전극막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 8 항에 있어서,상기 절연된 셀 게이트전극은 차례로 적층된 셀 게이트절연막 및 셀 게이트전극막으로 형성하되, 상기 주변 게이트절연막은 상기 셀 게이트절연막과 다른 두께로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 9 항에 있어서, 상기 주변 게이트절연막 및 상기 셀 게이트절연막은 각각 실리콘산화막 및 실리콘산화막, 실리콘산화막 및 고유전막, 고유전막 및 실리콘산화막, 또는 고유전막 및 고유전막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 셀 영역 및 주변회로 영역을 갖는 반도체기판을 준비하고,상기 반도체기판의 소정영역에 트렌치 소자분리막을 형성하여 상기 셀 영역 및 상기 주변회로 영역 내에 각각 셀 활성영역 및 주변 활성영역을 한정하되, 상기 셀 활성영역은 상기 주변 활성영역보다 작은 폭을 갖도록 한정되고,상기 트렌치 소자분리막 및 상기 활성영역들 상에 마스크층을 형성하고,상기 마스크층을 패터닝하여 상기 셀 활성영역의 상부를 가로지르는 셀 게이트 개구부를 형성하고,상기 패터닝된 마스크층을 식각마스크로 사용하여 상기 트렌치 소자분리막을 식각하여 상기 셀 활성영역의 측벽들 및 상부면을 부분적으로 노출시키는 셀 게이트 그루브를 형성하고,상기 셀 게이트 그루브를 채우는 절연된 셀 게이트 전극을 형성하고,상기 셀 게이트 전극을 갖는 반도체기판 상에 셀 게이트 보호막을 형성하고,상기 셀 게이트 보호막 및 상기 패터닝된 마스크층을 식각하여 상기 주변 활성영역을 가로지르는 주변 게이트 개구부를 형성하고,상기 주변 게이트 개구부 내에 절연된 주변 게이트 전극을 형성하는 것을 포함하는 공정에 의해 제공되는 반도체소자.
- 셀 영역 및 주변회로 영역을 갖는 반도체기판을 준비하고,상기 반도체기판의 소정영역에 트렌치 소자분리막을 형성하여 상기 셀 영역 및 상기 주변회로 영역 내에 각각 셀 활성영역 및 주변 활성영역을 한정하되, 상기 셀 활성영역은 상기 주변 활성영역보다 작은 폭을 갖도록 한정되고,상기 트렌치 소자분리막 및 상기 활성영역들 상에 마스크층을 형성하고,상기 마스크층을 패터닝하여 상기 셀 활성영역의 상부를 가로지르는 셀 게이트 개구부를 형성하고,상기 패터닝된 마스크층을 식각마스크로 사용하여 상기 셀 활성영역을 식각하여 상기 셀 활성영역을 부분적으로 리세스 시키는 셀 게이트 그루브를 형성하고,상기 셀 게이트 그루브를 채우는 절연된 셀 게이트전극을 형성하고,상기 셀 게이트 전극을 갖는 반도체기판 상에 셀 게이트보호막을 형성하고,상기 셀 게이트보호막 및 상기 패터닝된 마스크층을 식각하여 상기 주변 활성영역을 가로지르는 주변 게이트 개구부를 형성하고,상기 주변 게이트 개구부 내에 절연된 주변 게이트전극을 형성하는 것을 포함하는 반도체소자의 제조방법.
- 제 12 항에 있어서,상기 절연된 셀 게이트전극은 차례로 적층된 셀 게이트절연막 및 셀 게이트전극막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 12 항에 있어서,상기 셀 게이트 보호막은 고밀도 플라즈마 산화막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 12 항에 있어서,상기 주변 게이트 개구부를 형성한 후,상기 주변 활성영역에 채널이온을 주입하는 것을 더 포함하는 반도체소자의 제조방법.
- 제 12 항에 있어서,상기 절연된 주변 게이트전극은 차례로 적층된 주변 게이트절연막 및 주변 게이트전극막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 16 항에 있어서,상기 절연된 셀 게이트전극은 차례로 적층된 셀 게이트절연막 및 셀 게이트전극막으로 형성하되, 상기 주변 게이트절연막은 상기 셀 게이트절연막과 다른 두께로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 제 17 항에 있어서, 상기 주변 게이트절연막 및 상기 셀 게이트절연막은 각각 실리콘산화막 및 실리콘산화막, 실리콘산화막 및 고유전막, 고유전막 및 실리콘산화막, 또는 고유전막 및 고유전막으로 형성하는 것을 특징으로 하는 반도체소자의 제조방법.
- 셀 영역 및 주변회로 영역을 갖는 반도체기판을 준비하고,상기 반도체기판의 소정영역에 트렌치 소자분리막을 형성하여 상기 셀 영역 및 상기 주변회로 영역 내에 각각 셀 활성영역 및 주변 활성영역을 한정하되, 상기 셀 활성영역은 상기 주변 활성영역보다 작은 폭을 갖도록 한정되고,상기 트렌치 소자분리막 및 상기 활성영역들 상에 마스크층을 형성하고,상기 마스크층을 패터닝하여 상기 셀 활성영역의 상부를 가로지르는 셀 게이트 개구부를 형성하고,상기 패터닝된 마스크층을 식각마스크로 사용하여 상기 셀 활성영역을 식각하여 상기 셀 활성영역을 부분적으로 리세스 시키는 셀 게이트 그루브를 형성하고,상기 셀 게이트 그루브를 채우는 절연된 셀 게이트전극을 형성하고,상기 셀 게이트 전극을 갖는 반도체기판 상에 셀 게이트보호막을 형성하고,상기 셀 게이트보호막 및 상기 패터닝된 마스크층을 식각하여 상기 주변 활성영역을 가로지르는 주변 게이트 개구부를 형성하고,상기 주변 게이트 개구부 내에 절연된 주변 게이트전극을 형성하는 것을 포함하는 공정에 의해 제공되는 반도체소자.
- 제 2 항에 있어서,상기 절연된 셀 게이트전극을 형성하는 것은상기 노출된 셀 활성영역의 측벽들 및 상부면에 셀 게이트절연막을 형성하고,상기 셀 게이트절연막을 갖는 반도체기판 상에 셀 게이트전극막을 형성하고,상기 연마저지막을 정지막으로 채택하는 화학기계적연마(chemical mechanical polishing; CMP) 공정을 사용하여 상기 셀 게이트전극막을 평탄화하는 것을 포함하는 반도체소자의 제조방법.
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US11/110,167 US7566619B2 (en) | 2004-04-27 | 2005-04-20 | Methods of forming integrated circuit devices having field effect transistors of different types in different device regions |
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CN1700446A (zh) | 2005-11-23 |
CN100380631C (zh) | 2008-04-09 |
US7566619B2 (en) | 2009-07-28 |
US20050239252A1 (en) | 2005-10-27 |
KR20050103810A (ko) | 2005-11-01 |
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