KR102532028B1 - 반도체 초접합 소자의 제조 방법 - Google Patents
반도체 초접합 소자의 제조 방법 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005530 etching Methods 0.000 claims description 38
- 238000000206 photolithography Methods 0.000 claims description 9
- 210000000746 body region Anatomy 0.000 claims description 8
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Abstract
Description
도 4 내지 도 10은 본 개시에서 제공하는 반도체 초접합 소자의 제조 방법의 하나의 실시예의 제조 공정 중 주요 구조의 단면 구조 개략도이다.
Claims (10)
- n형 에피택셜층 상에 하드 마스크층을 형성하고, 포토리소그래피 공정을 통해 p형 칼럼의 위치를 정의한 후, 상기 하드 마스크층을 식각하여, 상기 하드 마스크층 내에 적어도 하나의 개구를 형성하는 단계, 상기 개구는 상기 p형 칼럼의 위치와 대응함;
상기 하드 마스크층을 마스크로서 상기 n형 에피택셜층을 식각하여, 상기 n형 에피택셜층 내에 제1 트렌치를 형성하는 단계, 상기 제1 트렌치의 폭은 대응되는 상기 개구의 폭보다 크며, 상기 제1 트렌치는 대응되는 상기 개구의 하측에 위치하는 p형 칼럼 영역 및 상기 p형 칼럼 영역의 양측에 위치하는 게이트 영역을 포함함;
상기 제1 트렌치의 표면에 제1 절연층을 형성하고, 제1 도전층을 증착하여 에치백함으로써, 상기 제1 트렌치의 게이트 영역 내에 게이트를 형성하는 단계;
상기 게이트의 노출된 측벽에 절연 사이드월을 형성하고, 상기 하드 마스크층과 상기 절연 사이드월을 마스크로서, 상기 n형 에피택셜층을 식각하며, 상기 n형 에피택셜층 내에 제2 트렌치를 형성하는 단계, 상기 제2 트렌치는 대응되는 상기 p형 칼럼 영역의 하측에 위치함;
상기 p형 칼럼 영역 및 상기 제2 트렌치 내에 p형 칼럼을 형성하며, 상기 p형 칼럼과 상기 n형 에피택셜층 사이에 pn 접합 구조를 형성하는 단계, 상기 p형 칼럼과 상기 게이트는 상기 절연 사이드월에 의해 격리됨;
를 포함하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 n형 에피택셜층 내에 p형 바디 영역을 형성하는 단계;
상기 p형 바디 영역 내에 n형 소스 영역을 형성하는 단계;
를 더 포함하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 하드 마스크층은 산화실리콘층-질화실리콘층-산화실리콘층의 적층층인 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
식각을 통해 상기 제1 트렌치를 형성할 때, 이방성 식각 및 등방성 식각이 결합된 식각 방법을 사용하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 제1 도전층의 재료는 다결정 실리콘인 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 제1 도전층을 증착할 때, 형성된 제1 도전층은 적어도 상기 제1 트렌치의 게이트 영역을 충진하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 제2 트렌치의 폭은 대응되는 상기 p형 칼럼 영역의 폭보다 큰 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 7 항에 있어서,
식각을 통해 상기 제2 트렌치를 형성할 때, 이방성 식각 및 등방성 식각이 결합된 식각 방법을 사용하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 절연 사이드월은 질화실리콘층을 포함하는 것을 특징으로 하는 반도체 초접합 소자의 제조 방법. - 제 1 항에 있어서,
상기 p형 칼럼의 재료는 p형 다결정 실리콘인 것을 특징으로 하는 반도체 초접합 소자의 제조 방법.
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CN202010372375.6A CN113628969B (zh) | 2020-05-06 | 2020-05-06 | 半导体超结器件的制造方法 |
CN202010372375.6 | 2020-05-06 | ||
PCT/CN2020/116683 WO2021223354A1 (zh) | 2020-05-06 | 2020-09-22 | 半导体超结器件的制造方法 |
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CN113628969B (zh) * | 2020-05-06 | 2022-06-24 | 苏州东微半导体股份有限公司 | 半导体超结器件的制造方法 |
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CN108767000A (zh) | 2018-08-16 | 2018-11-06 | 无锡新洁能股份有限公司 | 一种绝缘栅双极型半导体器件及其制造方法 |
CN109830532A (zh) | 2019-01-22 | 2019-05-31 | 上海华虹宏力半导体制造有限公司 | 超结igbt器件及其制造方法 |
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JP7175450B2 (ja) | 2022-11-21 |
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CN113628969B (zh) | 2022-06-24 |
JP2022536238A (ja) | 2022-08-15 |
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US11658209B2 (en) | 2023-05-23 |
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