KR20170084749A - 반도체 장치의 제조 방법 - Google Patents
반도체 장치의 제조 방법 Download PDFInfo
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- KR20170084749A KR20170084749A KR1020160003788A KR20160003788A KR20170084749A KR 20170084749 A KR20170084749 A KR 20170084749A KR 1020160003788 A KR1020160003788 A KR 1020160003788A KR 20160003788 A KR20160003788 A KR 20160003788A KR 20170084749 A KR20170084749 A KR 20170084749A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 121
- 230000002093 peripheral effect Effects 0.000 claims abstract description 86
- 238000005530 etching Methods 0.000 claims abstract description 71
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 57
- 125000006850 spacer group Chemical group 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 15
- 238000011049 filling Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 abstract description 2
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- 239000002184 metal Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- 229910052710 silicon Inorganic materials 0.000 description 16
- 239000010703 silicon Substances 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 229910052814 silicon oxide Inorganic materials 0.000 description 10
- 238000002955 isolation Methods 0.000 description 9
- 229910052581 Si3N4 Inorganic materials 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 7
- 238000000059 patterning Methods 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 238000005468 ion implantation Methods 0.000 description 5
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
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- 229910052732 germanium Inorganic materials 0.000 description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
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- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
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- 206010010144 Completed suicide Diseases 0.000 description 1
- 229910008482 TiSiN Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
Description
도 1b 내지 도 18b는 본 발명의 일 실시예에 따른 반도체 장치의 제조 방법을 나타낸 것으로, 도 1a 내지 18a의 Ⅰ-Ⅰ'선, Ⅱ-Ⅱ'선 및 Ⅲ-Ⅲ'선 방향으로 자른 단면도들이다.
도 19a 내지 28a는 본 발명의 일 실시예의 반도체 장치의 제조 방법을 설명하기 위한 평면도들이다.
도 19b 내지 도 28b는 본 발명의 일 실시예의 반도체 장치의 제조 방법을 설명하기 위한 것으로, 도 19a 내지 28a의 Ⅰ-Ⅰ'선 및 Ⅱ-Ⅱ'선 방향으로 자른 단면도들이다.
Claims (10)
- 셀 영역 및 주변회로 영역을 포함하는 기판의 상기 주변회로 영역 상에 차례로 제 1 절연 패턴 및 식각 정지 패턴을 형성하는 것;
평면적 관점에서, 상기 기판의 상기 셀 영역 상에 제 1 방향으로 연장하고 서로 평행한 제 1 부분들 및 한 쌍의 상기 제 1 부분들을 연결하고, 상기 식각 정지 패턴의 일측벽의 일부 및 상기 제 1 절연 패턴의 일 측벽의 일부를 덮는 제 2 부분을 포함하는 제 1 마스크 패턴을 형성하는 것;
상기 기판 상에 상기 식각 정지 패턴 및 상기 제 1 마스크 패턴을 덮는 제 2 절연막을 형성하는 것;
상기 식각 정지 패턴의 일부분 및 상기 제 2 절연막의 일부분을 차례로 식각하여, 상기 제 2 부분을 노출시키는 것, 상기 식각 정지 패턴의 나머지 부분은 상기 기판의 상기 주변회로 영역 상에서 제 2 마스크 패턴을 정의하고; 및
상기 제 2 부분을 제거하여, 상기 제 1 부분들을 서로 분리하는 것을 포함하는 반도체 장치의 제조 방법.
- 제 1 항에 있어서,
상기 제 2 절연막의 나머지 부분을 제거하여, 상기 제 1 부분들 및 상기 제 2 마스크 패턴의 상부면을 노출시키는 것을 더 포함하되,
상기 제 2 절연막의 상기 나머지 부분이 제거될 때, 상기 제 2 마스크 패턴에 노출된 상기 제 1 절연 패턴의 일부분이 같이 식각되는 반도체 장치의 제조 방법.
- 제 1 항에 있어서,
상기 기판의 상부면을 덮는 도전막을 형성하는 것; 및
상기 제 1 부분들 및 상기 제 2 마스크 패턴을 식각 마스크로 사용하여 상기 도전막을 식각하여, 상기 기판의 상기 셀 영역 및 상기 주변회로 영역 상에 각각 제 1 도전 패턴 및 제 2 도전 패턴을 형성하는 것을 더 포함하는 반도체 장치의 제조 방법.
- 제 1 항에 있어서,
상기 기판의 상부면을 덮는 마스크 절연막을 형성하는 것;
상기 제 1 부분들 및 상기 제 2 마스크 패턴을 식각 마스크로 사용하여 상기 마스크 절연막을 식각하여, 상기 기판의 셀 영역 및 상기 주변회로 영역 상에 각각 제 1 마스크 절연 패턴 및 제 2 마스크 절연 패턴을 형성하는 것;
상기 제 1 및 제 2 마스크 절연 패턴들을 식각 마스크로 사용하여 상기 기판을 식각하여, 상기 기판의 셀 영역 및 상기 주변회로 영역 내에 각각 제 1 리세스 영역 제 2 리세스 영역을 형성하는 것; 및
상기 제 1 리세스 영역 및 상기 제 2 리세스 영역 내에 절연 물질을 채워, 상기 기판의 상기 셀 영역에 제 1 활성 패턴 및 상기 기판의 상기 주변회로 영역에 제 2 활성 패턴을 형성하는 것을 더 포함하는 반도체 장치의 제조 방법.
- 제 1 항에 있어서,
상기 제 1 마스크 패턴을 형성하는 것은:
평면적 관점에서, 상기 기판의 상기 셀 영역 상에 차례로 적층된 제 1 희생 패턴 및 제 2 희생 패턴을 형성하는 것, 상기 제 1 및 제 2 희생 패턴들은 상기 제 1 방향에 교차하는 제 2 방향으로 배열되고, 상기 제 1 방향으로 연장되어 상기 제 1 절연 패턴의 상기 일 측벽의 다른 부분 및 상기 식각 정지 패턴의 상기 일 측벽의 다른 부분과 접촉하고;
상기 제 1 및 제 2 희생 패턴들의 표면들, 상기 제 1 절연 패턴의 상기 일 측벽의 상기 일부분 및 상기 식각 정지 패턴의 상기 일 측벽의 상기 일부분을 컨포말하게 덮는 스페이서막을 형성하는 것;
상기 제 1 희생 패턴의 상부면이 노출되도록 상기 스페이서막을 식각하는 것; 및
상기 제 1 희생 패턴을 제거하는 것을 포함하는 반도체 장치의 제조 방법 - 제 5 항에 있어서,
상기 제 1 희생 패턴 및 상기 제 2 희생 패턴은 상기 제 1 절연 패턴 및 상기 식각 정지 패턴이 형성될 때 같이 형성되되,
상기 제 1 희생 패턴은 상기 제 1 절연 패턴과 동일한 물질로 형성되고, 상기 제 2 희생 패턴은 상기 식각 정지 패턴과 동일한 물질로 형성되는 반도체 장치의 제조 방법.
- 제 6 항에 있어서,
상기 제 1 희생 패턴의 두께는 상기 제 1 절연 패턴의 두께와 동일하고,
상기 제 2 희생 패턴의 두께는 상기 제 1 식각 정지 패턴의 두께보다 얇은 반도체 장치의 제조 방법.
- 제 7 항에 있어서,
상기 스페이서막을 식각하는 것은 상기 제 2 희생 패턴을 제거하는 것을 포함하되,
상기 제 1 식각 정지 패턴의 두께가 상기 제 2 희생 패턴의 두께만큼 감소되는 반도체 장치의 제조 방법.
- 제 1 항에 있어서,
상기 제 1 마스크 패턴의 상기 제 1 부분들의 두께는 상기 제 2 부분의 두께보다 얇은 반도체 장치의 제조 방법.
- 기판의 셀 영역에 배치되고, 일 방향으로 연장된 제 1 활성 패턴들 각각의 중심부에 위치하는 상기 기판의 일부 영역 내에 비트라인 콘택을 형성하는 것;
상기 기판의 주변회로 영역에 배치된 제 2 활성 패턴 상에 차례로 제 1 절연 패턴 및 식각 정지 패턴을 형성하는 것;
평면적 관점에서, 상기 비트라인 콘택을 상기 일 방향에 교차하는 제 1 방향으로 가로지르는 제 1 부분 및 상기 제 1 부분의 단부에 배치되고, 상기 식각 정지 패턴의 일측벽의 부분 및 상기 제 1 절연 패턴의 일 측벽의 일부를 덮는 제 2 부분을 포함하는 비트라인 마스크 패턴을 형성하는 것;
상기 기판 상에 상기 식각 정지 패턴 및 상기 비트라인 마스크 패턴을 덮는 제 2 절연막을 형성하는 것;
상기 제 2 절연막의 일부분 및 상기 식각 정지 패턴의 일부분을 차례로 식각하여, 상기 제 2 부분을 노출시키는 것, 상기 식각 정지 패턴의 나머지 부분은 상기 기판의 상기 주변회로 영역 상에서 게이트 마스크 패턴을 정의하고; 및
상기 제 2 부분을 제거하여, 상기 제 1 부분들을 서로 분리하는 것을 포함하는 반도체 장치의 제조 방법.
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