KR20030018677A - 얕은 트렌치 소자분리를 갖는 반도체 장치 및 그 제조방법 - Google Patents
얕은 트렌치 소자분리를 갖는 반도체 장치 및 그 제조방법 Download PDFInfo
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- KR20030018677A KR20030018677A KR1020010052924A KR20010052924A KR20030018677A KR 20030018677 A KR20030018677 A KR 20030018677A KR 1020010052924 A KR1020010052924 A KR 1020010052924A KR 20010052924 A KR20010052924 A KR 20010052924A KR 20030018677 A KR20030018677 A KR 20030018677A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 53
- 238000002955 isolation Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title description 14
- 238000009792 diffusion process Methods 0.000 claims abstract description 98
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 claims description 24
- 230000003078 antioxidant effect Effects 0.000 claims description 24
- 229920002120 photoresistant polymer Polymers 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 15
- 238000005468 ion implantation Methods 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000003064 anti-oxidating effect Effects 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims 1
- 239000007943 implant Substances 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
Claims (17)
- 반도체 기판의 소저영역에 배치되어 활성영역을 한정하는 트랜치 소자분리막;상기 활성영역을 가로지르는 게이트 전극;상기 게이트 전극 양측의 활성영역 내에 형성되되 상기 게이트 전극의 가장자리와 중첩된 영역을 갖는 제1 및 제2 도전영역;적어도 상기 제1 및 제2 도전영역의 각각과 상기 게이트 전극 사이에 개재된 산화막 패턴; 및상기 활성영역 및 상기 게이트 전극 사이에 개재된 게이트 절연막을 포함하되, 상기 산화막 패턴은 상기 게이트 절연막보다 두꺼운 것을 특징으로 하는 반도체 장치.
- 제1 항에 있어서,상기 제1 및 제2 도전성 영역의 각각은 고농도 확산층 및 저농도 확산층을 포함하되, 상기 고농도 확산층은 상기 저농도 확산층 상부에 존재하는 것을 특징으로 하는 반도체 장치.
- 제2 항에 있어서,상기 고농도 확산층은 상기 산화막 패턴과 소정의 간격을 두고 상기 활성영역 내에 형성된 것을 특징으로 하는 반도체 장치.
- 제2 항에 있어서,상기 고농도 확산층은 상기 산화막 패턴과 접촉하여 상기 활성영역 내에 형성된 것을 특징으로 하는 반도체 장치.
- 제1 항에 있어서,상기 게이트 전극 하부의 활성영역 내에 채널 확산층을 더 포함하는 것을 특징으로 하는 반도체 장치.
- 제1 항에 있어서,상기 산화막 패턴은 상기 게이트 전극의 가장자리 및 상기 활성영역 사이에 개재되어 상기 활성영역을 일방향으로 나란히 가로지르는 것을 특징으로 하는 반도체 장치.
- 제1 항에 있어서,상기 산화막 패턴들의 양 끝단은 상기 게이트 전극의 하부로 연장되어 상기 게이트 전극 하부의 상기 활성영역 및 상기 소자분리막 사이의 경계를 더 덮는 것을 특징으로 하는 반도체 장치.
- 반도체 기판의 소정영역에 트랜치 소자분리막을 형성하여 활성영역을 한정하는 단계;상기 활성영역 내에 상기 활성영역을 일 방향으로 나란히 가로지르는 한쌍의 예비 저농도 확산층들을 형성하는 단계;적어도 상기 예비 저농도 확산층들 각각의 상부를 덮으며 소정의 상기 활성영역에 채널 영역을 한정하는 산화막 패턴을 형성하는 단계;상기 채널 영역 상에 게이트 산화막을 형성하는 단계;상기 예비 저농도 확산층과 나란한 방향으로 게이트 산화막 전면을 덮으며 상기 활성영역을 가로지르되, 그 가장자리는 상기 산화막 패턴과 중첩되는 게이트 전극을 형성하는 단계;상기 게이트 전극을 이온주입마스크로 사용하여 상기 활성영역 내에 불순물을 주입하여 상기 게이트 전극 양측의 활성영역 내에 상기 예비 저농도 확산층을 포함하는 저농도 확산층을 형성하는 단계; 및상기 게이트 전극 양측의 활성영역 내에 상기 저농도 확산층보다 얕은 고농도 확산층을 형성하는 단계를 포함하되, 상기 산화막 패턴들의 두께는 상기 게이트 산화막의 두께보다 더 두꺼운 것을 특징으로 하는 반도체 장치의 제조방법.
- 제8 항에 있어서,상기 예비 저농도 확산층들을 형성하기 전에,적어도 상기 예비 저농도 확산층들 사이의 영역에 불순물을 주입하여 얕은불순물 확산층을 형성하는 단계를 더 포함하는 것을 특징으로 하는 반도체 장치의 제조방법.
- 제8 항에 있어서,상기 예비 저농도 확산층을 형성하는 단계는,반도체 기판의 전면에 버퍼산화막, 산화방지막을 차례로 형성하는 단계;상기 산화방지막 상에 한쌍의 노출영역들을 갖는 포토레지스트 패턴을 형성하되, 상기 노출영역들은 상기 활성영역 상부의 상기 산화방지막을 일방향으로 나란히 노출시키도록 형성하는 단계;상기 포토레지스트 패턴을 식각마스크로 사용하여 적어도 상기 산화방지막 및 상기 버퍼산화막을 식각하여 소정의 상기 활성영역을 노출시키는 차례로 적층된 버퍼산화막 패턴 및 산화방지막 패턴을 형성하는 단계;상기 포토레지스트 패턴을 이온주입마스크로 사용하여 상기 활성영역 내에 저농도의 불순물을 주입하는 단계;및상기 포토레지스트 패턴을 제거하는 단계를 포함하는 반도체 장치의 제조방법.
- 제10 항에 있어서,상기 산화막 패턴 및 상기 게이트 산화막을 형성하는 단계는,상기 포토레지스트 패턴이 제거된 반도체 기판에 열산화공정을 실시하여 노출된 상기 활성영역에 산화막 패턴을 형성하되, 상기 산화막 패턴 하부에 상기 예비 저농도 확산층을 잔존시키는 단계;및상기 산화방지막을 제거하여 상기 버퍼산화막을 노출시키는 단계를 포함하되, 상기 산화막 패턴으로 한정된 영역의 상기 버퍼산화막은 게이트 산화막에 해당하는 것을 특징으로 하는 반도체 장치의 제조방법.
- 제11 항에 있어서,상기 산화막 패턴 및 상기 게이트 산화막을 형성하는 단계는,상기 포토레지스트 패턴이 제거된 반도체 기판에 열산화공정을 실시하여 노출된 상기 활성영역에 산화막 패턴을 형성하되, 상기 산화막 패턴 하부에 상기 예비 저농도 확산층을 잔존시키는 단계;상기 산화방지막 및 상기 버퍼산화막을 제거하는 단계;및상기 산화방지막 및 상기 버퍼산화막이 제거된 활성영역 전면에 게이트 산화막을 형성하는 단계를 포함하는 반도체 장치의 제조방법.
- 제8 항에 있어서,상기 예비 저농도 확산층을 형성하는 단계는,반도체 기판의 전면에 버퍼산화막, 산화방지막을 차례로 형성하는 단계;상기 산화방지막 및 상기 버퍼산화막을 차례로 패터닝하여 차례로 적층된 버퍼산화막 패턴 및 산화방지막 패턴을 형성하되, 적층된 상기 버퍼산화막 패턴 및상기 산화방지막 패턴은 상기 활성영역이 일방향으로 나란히 노출된 한쌍의 제1 개구부들을 가짐과 동시에, 상기 제1 개구부들 사이의 상기 소자분리막과 상기 활성영역의 경계가 노출된 제2 개구부들을 갖도록 형성하는 단계;상기 제2 개구부들을 덮고, 적어도 상기 제1 개구부들을 노출시키는 포토레지스트 패턴을 형성하는 단계;상기 포토레지스트 패턴을 이온주입 마스크로 사용하여 상기 활성영역 내에 불순물을 주입하는 단계;및상기 포토레지스트 패턴을 제거하는 단계를 포함하는 반도체 장치의 제조방법.
- 제13 항에 있어서,상기 산화막 패턴 및 상기 게이트 산화막을 형성하는 단계는,상기 포토레지스트 패턴이 제거된 반도체 기판에 열처리 공정을 실시하여 상기 제1 및 제2 개구부 내에 산화막 패턴을 형성하되, 상기 산화막 패턴 하부에 상기 예비 저농도 확산층을 잔존시키는 단계; 및상기 산화방지막을 제거하여 상기 버퍼산화막을 노출시키는 단계를 포함하되, 상기 산화막 패턴으로 한정된 영역의 상기 버퍼산화막은 게이트 산화막에 해당하는 것을 특징으로 하는 트랜지스터의 제조방법.
- 제13 항에 있어서,상기 산화막 패턴 및 상기 게이트 산화막을 형성하는 단계는,상기 포토레지스트 패턴이 제거된 반도체 기판에 열산화공정을 실시하여 상기 제1 및 제2 영역에 산화막 패턴을 형성하되, 상기 산화막 패턴 하부에 상기 예비 저농도 확산층을 잔존시키는 단계;상기 산화방지막 및 상기 버퍼산화막을 제거하는 단계;및상기 산화방지막 및 상기 버퍼산화막이 제거된 활성영역 전면에 게이트 산화막을 형성하는 단계를 포함하는 트랜지스터의 제조방법.
- 제8 항에 있어서,상기 고농도 확산층은 상기 산화막 패턴과 소정의 간격을 가지고 상기 저농도 확산층으로 둘러싸이도록 형성하는 것을 특징으로 하는 트랜지스터의 제조방법.
- 제8 항에 있어서,상기 고농도 확산층을 형성하는 단계는;상기 게이트 전극 및 상기 산화막 패턴을 이온주입 마스크로 사용하여 상기 활성영역 내에 불순물을 주입하여 상기 저농도 확산층보다 얕은 고농도 확산층을 형성하는 것을 특징으로 하는 트랜지스터의 제조방법.
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US10/105,544 US6727568B2 (en) | 2001-08-30 | 2002-03-25 | Semiconductor device having a shallow trench isolation and method of fabricating the same |
US10/795,176 US7041563B2 (en) | 2001-08-30 | 2004-03-05 | Semiconductor device having a shallow trench isolation and method of fabricating the same |
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KR100634168B1 (ko) * | 2004-03-03 | 2006-10-16 | 삼성전자주식회사 | 낮은 문턱 전압 및 높은 절연파괴 전압의 트랜지스터를구비하는 반도체 장치 |
KR100688552B1 (ko) * | 2005-06-08 | 2007-03-02 | 삼성전자주식회사 | 두꺼운 에지 게이트절연막 패턴을 갖는 모스 전계효과트랜지스터 및 그 제조방법 |
KR100650837B1 (ko) * | 2005-06-30 | 2006-11-27 | 주식회사 하이닉스반도체 | 낸드 플래쉬 메모리 소자 및 그의 제조방법 |
US8093663B2 (en) * | 2006-05-09 | 2012-01-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device, method of fabricating the same, and patterning mask utilized by the method |
US20080099796A1 (en) * | 2006-11-01 | 2008-05-01 | Vora Madhukar B | Device with patterned semiconductor electrode structure and method of manufacture |
JP2008218899A (ja) * | 2007-03-07 | 2008-09-18 | Toshiba Corp | 半導体装置及びその製造方法 |
KR100937667B1 (ko) * | 2007-12-27 | 2010-01-19 | 주식회사 동부하이텍 | 트랜지스터 제조 방법 |
JP5349885B2 (ja) | 2008-09-30 | 2013-11-20 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
CN103066079B (zh) * | 2013-01-21 | 2015-07-29 | 清华大学 | 半导体器件间隔离结构及其形成方法 |
CN104900504B (zh) * | 2015-05-25 | 2018-02-06 | 上海华虹宏力半导体制造有限公司 | 降低mos晶体管gidl电流的方法 |
CN112864223A (zh) * | 2019-11-28 | 2021-05-28 | 联华电子股份有限公司 | 半导体晶体管及其制作方法 |
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US5716866A (en) * | 1995-08-30 | 1998-02-10 | Motorola, Inc. | Method of forming a semiconductor device |
US6025232A (en) * | 1997-11-12 | 2000-02-15 | Micron Technology, Inc. | Methods of forming field effect transistors and related field effect transistor constructions |
US7391087B2 (en) * | 1999-12-30 | 2008-06-24 | Intel Corporation | MOS transistor structure and method of fabrication |
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US7041563B2 (en) | 2006-05-09 |
US20040171202A1 (en) | 2004-09-02 |
US6727568B2 (en) | 2004-04-27 |
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