KR101961847B1 - 반도체 장치의 제작 방법 - Google Patents
반도체 장치의 제작 방법 Download PDFInfo
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- KR101961847B1 KR101961847B1 KR1020120034833A KR20120034833A KR101961847B1 KR 101961847 B1 KR101961847 B1 KR 101961847B1 KR 1020120034833 A KR1020120034833 A KR 1020120034833A KR 20120034833 A KR20120034833 A KR 20120034833A KR 101961847 B1 KR101961847 B1 KR 101961847B1
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- KR
- South Korea
- Prior art keywords
- electrode layer
- film
- oxide semiconductor
- insulating film
- semiconductor layer
- Prior art date
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Abstract
트랜지스터의 제작 공정에 있어서, 산화물 반도체층, 소스 전극층, 드레인 전극층, 게이트 절연막, 게이트 전극층, 산화알루미늄막을 순차적으로 작성한 후, 산화물 반도체층 및 산화알루미늄막에 대해 열처리를 행함으로써, 수소 원자를 함유하는 불순물이 제거되고, 또한, 화학량론비를 초과하는 산소를 함유하는 영역을 갖는 산화물 반도체층을 형성한다. 또한, 산화알루미늄막을 형성함으로써, 상기 트랜지스터를 갖는 반도체 장치나 전자 기기의 제작 공정에서의 열처리로도 대기로부터 물이나 수소가 산화물 반도체층으로 침입하여 확산되는 것을 방지할 수 있어 신뢰성이 높은 트랜지스터로 할 수 있다.
Description
도 2a 내지 도 2c는 반도체 장치의 일 형태를 설명하는 제작 방법을 설명하는 단면도.
도 3a 내지 도 3c는 반도체 장치의 일 형태를 설명하는 제작 방법을 설명하는 단면도.
도 4a 내지 도 4c는 반도체 장치의 일 형태를 설명하는 도면.
도 5는 반도체 장치의 일 형태를 설명하는 도면.
도 6은 반도체 장치의 일 형태를 설명하는 도면.
도 7은 반도체 장치의 일 형태를 설명하는 도면.
도 8a 및 도 8b는 반도체 장치의 일 형태를 설명하는 도면.
도 9a 내지 도 9c는 반도체 장치의 일 형태를 설명하는 도면.
도 10a 내지 도 10f는 전자 기기를 도시하는 도면.
도 11a1, 11a2, 11b1, 및 11b2는 비교예 시료 A의 SIMS 데이터를 도시하는 도면.
도 12a1, 12a2, 12b1, 및 12b2는 실시예 시료 A의 SIMS 데이터를 도시하는 도면.
도 13a 내지 도 13d는 비교예 시료 B의 TDS 데이터를 도시하는 도면.
도 14a 내지 도 14d는 실시예 시료 B의 TDS 데이터를 도시하는 도면.
도 15는 비교예 시료 C를 사용한 트랜지스터의 특성을 도시하는 도면.
도 16은 실시예 시료 C를 사용한 트랜지스터의 특성을 도시하는 도면.
106 : 산화물 반도체층 106a : 제 1 영역
106b : 제 2 영역 106c : 제 2 영역
108a : 소스 전극층 108b : 드레인 전극층
110 : 게이트 절연막 112 : 게이트 전극층
114 : 절연막 116 : 층간 절연막
121 : 불순물 원소 150 : 트랜지스터
206 : 소자 분리 절연막 208 : 게이트 절연막
210 : 게이트 전극층 216 : 채널 형성 영역
220 : 불순물 영역 224 : 금속 화합물 영역
228 : 절연막 230 : 절연막
242a : 드레인 전극층 242b : 소스 전극층
244 : 산화물 반도체층 244a : 제 1 영역
244b : 제 2 영역 244c : 제 2 영역
246 : 게이트 절연막 248a : 게이트 전극층
248b : 전극층 250 : 절연막
252 : 절연막 260 : 트랜지스터
262 : 트랜지스터 264 : 용량 소자
285 : 기판 601 : 기판
602 : 포토다이오드 606a : 반도체막
606b : 반도체막 606c : 반도체막
608 : 접착층 613 : 기판
622 : 광 631 : 절연막
633 : 층간 절연막 634 : 층간 절연막
640 : 트랜지스터 641a : 전극층
641b : 전극층 642 : 전극층
643 : 도전층 645 : 게이트 전극층
656 : 트랜지스터 658 : 포토다이오드 리셋 신호선
659 : 게이트 신호선 671 : 포토센서 출력 신호선
672 : 포토센서 기준 신호선 2701 : 하우징
2703 : 하우징 2705 : 표시부
2707 : 표시부 2711 : 축부
2721 : 전원 2723 : 조작 키
2725 : 스피커 2800 : 하우징
2801 : 하우징 2802 : 표시 패널
2803 : 스피커 2804 : 마이크로폰
2805 : 조작 키 2806 : 포인팅 디바이스
2807 : 카메라용 렌즈 2808 : 외부 접속 단자
2810 : 태양 전지 셀 2811 : 외부 메모리 슬롯
3001 : 본체 3002 : 하우징
3003 : 표시부 3004 : 키보드
3021 : 본체 3022 : 스타일러스
3023 : 표시부 3024 : 조작 버튼
3025 : 외부 인터페이스 3051 : 본체
3053 : 접안부 3054 : 조작 스위치
3055 : 표시부(B) 3056 : 배터리
3057 : 표시부(A) 4001 : 기판
4002 : 화소부 4003 : 신호선 구동 회로
4004 : 주사선 구동 회로 4005 : 씰재
4006 : 기판 4008 : 액정층
4010 : 트랜지스터 4011 : 트랜지스터
4013 : 액정 소자 4015 : 접속 단자 전극층
4016 : 단자 전극층 4018 : FPC
4018a : FPC 4018b : FPC
4019 : 이방성 도전막 4021 : 절연막
4023 : 절연막 4024 : 절연막
4030 : 전극층 4031 : 전극층
4033 : 절연막 4510 : 격벽
4511 : 전계 발광층 4513 : 발광 소자
4514 : 충전재 4612 : 캐비티
4613 : 구형 입자 4614 : 충전재
4615a : 흑색 영역 4615b : 백색 영역
9601 : 하우징 9603 : 표시부
9605 : 스탠드
Claims (24)
- 반도체 장치의 제작 방법에 있어서:
산화물 반도체층을 형성하는 단계와;
상기 산화물 반도체층 위에 소스 전극층 및 드레인 전극층을 형성하는 단계와;
상기 산화물 반도체층에 인접하는 게이트 절연막을 형성하는 단계와;
상기 게이트 절연막을 개재하여 상기 산화물 반도체층에 인접하는 게이트 전극층을 형성하는 단계와;
상기 소스 전극층, 상기 드레인 전극층, 및 상기 게이트 전극층을 마스크로 사용하여 불순물 원소를 상기 산화물 반도체층에 첨가하는 단계와;
상기 게이트 전극층 위에 산화 알루미늄막을 형성하는 단계와;
적어도 상기 산화물 반도체층에 대해 열처리를 행하는 단계를 포함하고,
상기 산화 알루미늄막의 두께는 50 ㎚를 초과하고 500 ㎚ 이하인, 반도체 장치의 제작 방법. - 반도체 장치의 제작 방법에 있어서:
하지 절연막을 형성하는 단계와;
상기 하지 절연막 위에 접하여 산화물 반도체층을 형성하는 단계와;
상기 산화물 반도체층 위에 소스 전극층 및 드레인 전극층을 형성하는 단계와;
상기 산화물 반도체층, 상기 소스 전극층, 및 상기 드레인 전극층 위에 접하여 게이트 절연막을 형성하는 단계와;
상기 산화물 반도체층과 중첩되는 영역의 상기 게이트 절연막 위에 게이트 전극층을 형성하는 단계와;
상기 소스 전극층, 상기 드레인 전극층, 및 상기 게이트 전극층을 마스크로 사용하여 불순물 원소를 상기 산화물 반도체층에 첨가하는 단계와;
상기 게이트 절연막 및 상기 게이트 전극층 위에 접하여 산화 알루미늄막을 형성하는 단계와;
상기 산화물 반도체층에 대해 열처리를 행하는 단계를 포함하고,
상기 산화 알루미늄막의 두께는 50 ㎚를 초과하고 500 ㎚ 이하인, 반도체 장치의 제작 방법. - 반도체 장치의 제작 방법에 있어서:
트랜지스터를 제작하는 단계와;
상기 트랜지스터에 대해 열처리를 행하는 단계를 포함하고,
상기 트랜지스터는:
하지 절연막을 형성하는 단계와;
상기 하지 절연막 위에 접하여 산화물 반도체층을 형성하는 단계와;
상기 산화물 반도체층 위에 소스 전극층 및 드레인 전극층을 형성하는 단계와;
상기 산화물 반도체층, 상기 소스 전극층, 및 상기 드레인 전극층 위에 접하여 게이트 절연막을 형성하는 단계와;
상기 산화물 반도체층과 중첩하는 영역의 상기 게이트 절연막 위에 게이트 전극층을 형성하는 단계와;
상기 소스 전극층, 상기 드레인 전극층, 및 상기 게이트 전극층을 마스크로 사용하여 불순물 원소를 상기 산화물 반도체층에 첨가하는 단계와;
상기 게이트 절연막 및 상기 게이트 전극층 위에 접하여 산화 알루미늄막을 형성하는 단계를 포함하는 방법에 의해 제작되고,
상기 산화 알루미늄막의 두께는 50 ㎚를 초과하고 500 ㎚ 이하인, 반도체 장치의 제작 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화물 반도체층이 형성된 직후, 상기 산화물 반도체층에 대해 열처리를 행하는 단계를 더 포함하는, 반도체 장치의 제작 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화 알루미늄막 위에 층간 절연막을 형성하는 단계를 더 포함하는, 반도체 장치의 제작 방법. - 제 5 항에 있어서,
상기 층간 절연막은 산화질화실리콘으로 형성되는, 반도체 장치의 제작 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 불순물 원소는 상기 게이트 전극층이 형성된 후 이온 도핑법 또는 이온 주입법에 의해 상기 산화물 반도체층에 첨가되는, 반도체 장치의 제작 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화물 반도체층은 가열하면서 형성되는, 반도체 장치의 제작 방법. - 제 1 항에 있어서,
상기 게이트 절연막은 상기 게이트 절연막의 화학량론비보다 산소 함유량이 많은 영역을 포함하고,
상기 영역은 상기 산화물 반도체층과 접촉하는, 반도체 장치의 제작 방법. - 제 1 항에 있어서,
상기 산화물 반도체층 위에서 서로 이웃하는 상기 소스 전극층과 상기 드레인 전극층 사이의 거리에 의해 결정되는 채널 길이는 2 ㎛ 이하인, 반도체 장치의 제작 방법. - 제 2 항 또는 제 3 항에 있어서,
상기 하지 절연막이 상기 하지 절연막의 화학량론비보다 산소 함유량이 많은 제 1 영역을 포함하거나 또는 상기 게이트 절연막이 상기 게이트 절연막의 화학량론비보다 산소 함유량이 많은 제 2 영역을 포함하고,
상기 제 1 영역 및 상기 제 2 영역은 상기 산화물 반도체층과 접촉하는, 반도체 장치의 제작 방법. - 제 2 항 또는 제 3 항에 있어서,
상기 산화물 반도체층 위에서 서로 이웃하는 상기 소스 전극층과 상기 드레인 전극층 사이의 거리에 의해 결정되는 채널 길이는 2 ㎛ 이하인, 반도체 장치의 제작 방법. - 삭제
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JP5981753B2 (ja) | 2016-08-31 |
TWI632684B (zh) | 2018-08-11 |
CN107424927A (zh) | 2017-12-01 |
CN102738002A (zh) | 2012-10-17 |
US9960278B2 (en) | 2018-05-01 |
CN107424927B (zh) | 2021-03-30 |
US20120258575A1 (en) | 2012-10-11 |
TW201701484A (zh) | 2017-01-01 |
JP2016189475A (ja) | 2016-11-04 |
US20180182894A1 (en) | 2018-06-28 |
CN102738002B (zh) | 2017-05-31 |
KR20120114169A (ko) | 2012-10-16 |
KR20190032330A (ko) | 2019-03-27 |
JP6225220B2 (ja) | 2017-11-01 |
JP2012227521A (ja) | 2012-11-15 |
TWI562366B (en) | 2016-12-11 |
TW201306262A (zh) | 2013-02-01 |
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