KR101254539B1 - 수직 구조 반도체 장치 - Google Patents
수직 구조 반도체 장치 Download PDFInfo
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Abstract
Description
도 2 는 종래기술에 따른, 도체 또는 반도체 제 2 기판에 GaN 박막 멤브레인이 본딩된 수직 구조의 GaN 기반 LED 를 도시한다.
도 3 은 종래기술에 따른, 원시 사파이어 기판을 제거한 후 GaN 박막 멤브레인에 두꺼운 금속층이 접착된 수직 구조의 GaN 기반 LED 를 도시한다.
도 4 는 본 발명의 일 실시형태에 따른 반도체 장치를 제조하는 방법을 도시하는 흐름도이다.
도 5 는 본 발명의 일 실시형태에 따른 사파이어 기판의 상단에 GaN 또는 AlN 버퍼층이 성장된 에피택셜 구조의 수직 장치를 도시한다. 또한, 도 5 는 본 발명의 일 실시형태에 따른 열장벽으로서 부가된 AlGaN 버퍼층을 도시한다.
도 6 은 본 발명의 일 실시형태에 따른, p-타입 콘택트 및 반사층을 형성하기 위한 p-GaN 에피택셜층의 상단 상의 p-콘택트 금속 및 ITO 투명 콘택트/DBR 층의 적층을 도시한다.
도 7 은 본 발명의 일 실시형태에 따른, ITO 와 금 (gold) 중간층 사이의 접착을 강화하기 위한 접착층을 도시한다.
도 8 은 본 발명의 일 실시형태에 따른, GaN LED 층과 후속적으로 적층된 하드 구리층 사이의 응력 경감을 위해 전자도금 또는 무전해 (electro-less) 도금 방식을 사용하는 소프트 구리층 적층을 도시한다.
도 9 는 본 발명의 일 실시형태에 따른, 기계적 견고함 및 더 높은 전기적, 열적 도전성을 제공하기 위해 전자도금 또는 무전해 도금 방식을 사용하는 하드 구리층 적층을 도시한다.
도 10 은 본 발명의 일 실시형태에 따른, 레이저 리프트-오프 이전에 도전성 접착 글루를 사용하여 다공성 지지 웨이퍼 캐리어에 접착되는, 구리로 전자도금 또는 무전해 도금된 GaN LED 웨이퍼를 도시한다.
도 11 은 본 발명의 일 실시형태에 따른, 레이저 리프트-오프 프로세스 동안 균일한 레이저빔 에너지 분포를 획득하기 위해 확산 매체를 사용하여 사파이어 기판을 통해 인가되는 엑시머 레이저빔을 도시한다.
도 12 는 본 발명의 일 실시형태에 따른, 레이저 리프트-오프 후의 사파이어 기판 제거 및 Ga 드롭 세정을 도시한다.
도 13 은 본 발명의 일 실시형태에 따른, n-콘택트 형성 이전에 건식 에칭 및 GaN 표면 평탄화 에칭에 의한 GaN/AlGaN 버퍼층 제거를 도시한다.
도 14 는 본 발명의 일 실시형태에 따른, GaN LED 층의 상단 상의 n-타입 ITO 투명 콘택트 형성을 도시한다.
도 15 는 본 발명의 일 실시형태에 따른, n-ITO 층 상의 n-콘택트 형성 및 금 패드 금속화를 도시한다.
도 16 은 본 발명의 일 실시형태에 따른, 기계적 스크라이빙 (scribing) 도는 레이저 스크라이빙과 같은 건식 에칭 또는 기계적 방법에 의한 장치 분리를 도시한다.
도 17 은 본 발명의 일 실시형태에 따른, 보호 SiO2 패시베이션층 적층을 도시한다.
도 18 은 본 발명의 일 실시형태에 따른, 지지 웨이퍼 캐리어 제거 및 최종적 장치 구조를 도시한다.
도 19 는 본 발명의 일 실시형태에 따른, 다이싱 (dicing) 또는 레이저 스크라이빙의 의해 장치 분리를 도시한다.
도 20 은 본 발명의 일 실시형태에 따른, 리드 프레임 상의 수직 장치의 다이 본딩 또는 와이어 본딩을 도시한다.
Claims (6)
- 기판 상에 반도체 소자층을 형성하는 단계;
상기 반도체 소자층의 위에 제1 타입의 전기적 콘택트층을 형성하는 단계;
상기 제1 타입의 전기적 콘택트층 상에 전자도금 또는 무전해 도금 방식을 사용하여 금속 지지층을 형성하는 단계;
상기 반도체 소자층으로부터 상기 기판을 제거하는 단계;
상기 기판이 제거된 상기 반도체 소자층의 표면과 전기적으로 결합하는 하나 이상의 제2 타입의 전기적 콘택트를 형성하는 단계; 및
상기 반도체 소자층을 상기 하나 이상의 제2 타입의 전기적 콘택트에 대응하는 하나 이상의 개별 반도체 장치로 분리하는 단계
를 포함하고,
상기 금속 지지층을 형성하는 단계는
단위 시간 당 적층되는 두께로 표현되는 제1 도금율을 가지는 제1 도금 방법에 의하여 제1 금속 지지층을 형성하는 단계; 및
단위 시간 당 적층되는 두께로 표현되고, 상기 제1 도금율보다 빠른 제2 도금율을 가지는 제2 도금 방법에 의하여 제2 금속 지지층을 형성하는 단계
를 포함하는, 반도체 장치 제조 방법. - 제1항에 있어서,
상기 기판 상에 상기 반도체 소자층을 형성하는 단계는,
상기 기판 상에 갈륨질소(GaN) 또는 알루미늄질소(AlN) 중 적어도 하나를 포함하는 제1 버퍼층을 적층하는 단계; 및
상기 제1 버퍼층 상에 n-GaN 층을 적층하는 단계
를 포함하는 반도체 장치 제조 방법. - 삭제
- 제1항에 있어서,
상기 금속 지지층을 형성하는 단계는
상기 제1 금속 지지층을 형성하는 단계 및 상기 제2 금속 지지층을 형성하는 단계 이전에,
상기 제1 타입의 전기적 콘택트층 상에 금(Au) 중간층을 전자빔 증발기를 사용하여 적층하는 단계;
를 더 포함하는 반도체 장치 제조 방법. - 금속 지지층;
상기 금속 지지층 상에 형성된 제1 타입의 전기적 콘택트층;
상기 제1 타입의 전기적 콘택트층 상에 형성된 반도체 소자층; 및
상기 반도체 소자층 상에 형성된 제2 타입의 전기적 콘택트
를 포함하고,
상기 금속 지지층은
상기 제1 타입의 전기적 콘택트층에 인접하며, 단위 시간 당 적층되는 두께로 표현되는 제1 도금율을 가지는 제1 도금 방법에 의하여 형성된 구리 또는 구리 합금을 포함하는 제1 금속 지지층; 및
단위 시간 당 적층되는 두께로 표현되고, 상기 제1 도금율보다 빠른 제2 도금율을 가지는 제2 도금 방법에 의하여 형성된 구리 또는 구리 합금을 포함하는 제2 금속 지지층
을 포함하는 반도체 장치. - 제5항에 있어서,
상기 금속 지지층과 상기 제1 타입의 전기적 콘택트층 사이에 금(Au)을 포함하는 중간층
을 더 포함하고,
상기 금속 지지층은
구리 또는 구리 합금을 포함하여 형성되는 반도체 장치.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US56632204P | 2004-04-28 | 2004-04-28 | |
US60/566,322 | 2004-04-28 | ||
PCT/US2005/014634 WO2005104780A2 (en) | 2004-04-28 | 2005-04-27 | Vertical structure semiconductor devices |
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KR1020067022583A Division KR101264322B1 (ko) | 2004-04-28 | 2006-10-27 | 수직 구조 반도체 장치 |
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KR20120031102A KR20120031102A (ko) | 2012-03-29 |
KR101254539B1 true KR101254539B1 (ko) | 2013-04-19 |
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KR1020067022583A KR101264322B1 (ko) | 2004-04-28 | 2006-10-27 | 수직 구조 반도체 장치 |
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US (1) | US7465592B2 (ko) |
EP (1) | EP1749308A4 (ko) |
JP (1) | JP5336075B2 (ko) |
KR (2) | KR101254539B1 (ko) |
CN (2) | CN101901858B (ko) |
TW (1) | TWI385816B (ko) |
WO (1) | WO2005104780A2 (ko) |
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WO2004109764A2 (en) * | 2003-06-04 | 2004-12-16 | Myung Cheol Yoo | Method of fabricating vertical structure compound semiconductor devices |
US8309377B2 (en) | 2004-04-07 | 2012-11-13 | Tinggi Technologies Private Limited | Fabrication of reflective layer on semiconductor light emitting devices |
US7417266B1 (en) | 2004-06-10 | 2008-08-26 | Qspeed Semiconductor Inc. | MOSFET having a JFET embedded as a body diode |
TWI433343B (zh) * | 2004-06-22 | 2014-04-01 | Verticle Inc | 具有改良光輸出的垂直構造半導體裝置 |
TWI389334B (zh) * | 2004-11-15 | 2013-03-11 | Verticle Inc | 製造及分離半導體裝置之方法 |
US8802465B2 (en) * | 2005-01-11 | 2014-08-12 | SemiLEDs Optoelectronics Co., Ltd. | Method for handling a semiconductor wafer assembly |
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- 2005-04-27 CN CN2005800210066A patent/CN101366121B/zh not_active Expired - Fee Related
- 2005-04-27 EP EP05758731A patent/EP1749308A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
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KR20070013291A (ko) | 2007-01-30 |
KR101264322B1 (ko) | 2013-05-22 |
CN101366121A (zh) | 2009-02-11 |
TW200610190A (en) | 2006-03-16 |
CN101366121B (zh) | 2011-05-04 |
EP1749308A4 (en) | 2011-12-28 |
US7465592B2 (en) | 2008-12-16 |
US20050242365A1 (en) | 2005-11-03 |
WO2005104780A3 (en) | 2008-10-02 |
JP2007536725A (ja) | 2007-12-13 |
CN101901858A (zh) | 2010-12-01 |
TWI385816B (zh) | 2013-02-11 |
JP5336075B2 (ja) | 2013-11-06 |
CN101901858B (zh) | 2014-01-29 |
WO2005104780A2 (en) | 2005-11-10 |
KR20120031102A (ko) | 2012-03-29 |
EP1749308A2 (en) | 2007-02-07 |
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