KR20180058834A - 국부적인 반도체 웨이퍼 박판화 - Google Patents
국부적인 반도체 웨이퍼 박판화 Download PDFInfo
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- KR20180058834A KR20180058834A KR1020187013408A KR20187013408A KR20180058834A KR 20180058834 A KR20180058834 A KR 20180058834A KR 1020187013408 A KR1020187013408 A KR 1020187013408A KR 20187013408 A KR20187013408 A KR 20187013408A KR 20180058834 A KR20180058834 A KR 20180058834A
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Abstract
Description
도 2a 내지 도 2c는 반도체 웨이퍼 국부 박막화가 수행된 후 공정의 일례를 개략적으로 도시한다.
도 3은 웨이퍼의 박막화된 뒷면 상에 형성된 금속화 스택(stack)을 갖는 국부적으로 박막화된 반도체 소자의 일례의 최종적인 구조를 개략적으로 도시한다.
도 4a 내지 도 4h는 웨이퍼 박막화 공정 동안 웨이퍼의 뒷면에 적용될 수 있는 예시적인 기하학적 패턴을 도시한다.
도 5a 및 도 5b는 활성 영역과 종단 영역에서 상이한 반도체 두께를 갖는 IGBT 또는 다른 소자의 평면도 및 단면도를 각각 도시한다.
도 6은 이론적인 계산으로 얻은 바이폴라 트랜지스터에 대한 비공핍(un-depleted) 기저부 폭과 도핑 농도의 함수로서 실리콘 항복 전압(breakdown voltage)을 도시한다.
Claims (23)
- 반도체 기판을 박판화하는 방법으로서,
앞면 - 그 위에 또는 그 내부에 적어도 하나의 전자 소자가 배치되는 - 을 갖는 반도체 기판을 제공하는 단계;
상기 반도체 기판의 뒷면에 마스크를 적용하는 단계;
선택된 기하학적 패턴으로 상기 마스크를 패터닝 하는 단계; 및
상기 선택된 기하학적 패턴을 상기 마스크로부터 상기 반도체 기판의 상기 뒷면에 전사하기 위해 상기 반도체 기판의 상기 뒷면을 식각하는 단계
를 포함하는, 방법. - 제1항에서,
상기 반도체 기판의 뒷면에 전사된 상기 선택된 기하학적 패턴은 복수의 오목부를 포함하는, 방법. - 제2항에서,
상기 복수의 오목부는 하나 이상의 홈, 트렌치, 구멍 또는 이들의 조합을 포함하는, 방법. - 제1항에서,
상기 마스크를 적용하는 단계 전에 상기 반도체 기판의 상기 앞면에 보호 층을 적용하는 단계를 더 포함하는, 방법. - 제1항에서,
상기 반도체 기판의 상기 뒷면에 보호 층을 적용하는 단계를 더 포함하고,
상기 마스크를 적용하는 단계는 상기 보호 층에 상기 마스크를 적용하는 단계를 포함하는, 방법. - 제1항에서,
상기 마스크는 포토리소그래피 공정에 적합한 폴리머 재료를 포함하는, 방법. - 제1항에서,
상기 반도체 기판의 상기 뒷면을 식각하고 임의의 최종적인(eventual) 절연 보호 층을 식각하는 단계는, 깊은 반응성 이온 식각(deep reactive ion etching, DRIE) 공정을 사용하여 상기 반도체 기판의 상기 뒷면을 식각하는 단계를 포함하는, 방법. - 제1항에서,
상기 반도체 기판의 상기 뒷면을 식각하는 단계는, 보쉬(Bosch) 공정을 사용하여 상기 반도체 기판의 상기 뒷면을 식각하는 단계를 포함하는, 방법. - 제1항에서,
상기 전자 소자는 다이오드를 포함하는, 방법. - 제1항에서,
상기 전자 소자는 바이폴라 트랜지스터를 포함하는, 방법. - 제1항에서,
상기 전자 소자는 전력 전계 효과 트랜지스터를 포함하는, 방법. - 제1항에서,
상기 전자 소자는 MOSFET를 포함하는, 방법. - 제1항에서,
상기 반도체 기판의 상기 뒷면을 식각한 후 상기 반도체 기판의 상기 뒷면 상에 하나 이상의 추가 공정을 수행하는 단계를 더 포함하는, 방법. - 제13항에서,
상기 하나 이상의 추가 공정은, 증착, 포토리소그래피, 열적, 기계적 및 도핑 공정으로 이루어진 군에서 선택되는, 방법. - 제13항에서,
상기 하나 이상의 추가 공정은 금속 증착 공정을 포함하는, 방법. - 제13항에서,
상기 하나 이상의 추가 공정은, 상기 패터닝된 뒷면 구조체 내의 오목부를 채우기 위한 전도성 재료 증착 공정을 포함하는, 방법. - 제16항에서,
상기 전도성 재료 증착 추가 공정을 수행하기 전에 상기 반도체 기판의 상기 뒷면 상에 시드 층을 증착하는 단계를 더 포함하는, 방법. - 제1항에서,
상기 반도체 기판은 활성 영역 및 종단 영역을 포함하고, 상기 전자 소자는 상기 활성 영역 상에 또는 상기 활성 영역 내에 형성되고,
상기 뒷면이 상기 활성 영역에서만 박막화되도록 상기 종단 영역이 아닌 상기 활성 영역에서 상기 반도체 기판의 상기 뒷면을 식각하는 단계를 더 포함하는, 방법. - 제18항에서,
상기 전자 소자는, 절연 게이트 바이폴라 트랜지스터(IGBT), 전계 효과 트랜지스터(FET), MOSFET 및 다이오드로 이루어진 군에서 선택되는, 방법. - 제1항의 방법에 따라 제조된 반도체 기판.
- 제20항에서,
상기 기판의 앞면 상에 배치된 전자 소자를 더 포함하는, 반도체 기판. - 제16항에서,
상기 도전성 재료는 구리이고, 상기 도전성 재료 증착 공정은 전기 도금 공정인, 방법. - 제16항에서,
상기 하나 이상의 추가 공정은, 상기 패터닝된 뒷면 구조체 내의 오목부를 채우기 위한 화학 기상 증착 공정(CVD) 또는 물리 기상 증착 공정(PVD)을 포함하는, 방법.
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017123441A (ja) * | 2016-01-08 | 2017-07-13 | 三菱電機株式会社 | 半導体レーザ素子の製造方法 |
KR102038531B1 (ko) * | 2018-02-14 | 2019-10-31 | 주식회사 예스파워테크닉스 | 전기적 특성이 향상된 배면 구조를 가진 전력 반도체 |
CN111463141B (zh) * | 2019-01-18 | 2023-05-02 | 芯恩(青岛)集成电路有限公司 | 一种提高晶圆探针台利用率的方法 |
US10964596B2 (en) * | 2019-01-25 | 2021-03-30 | Semiconductor Components Industries, Llc | Backside metal patterning die singulation system and related methods |
US10727216B1 (en) | 2019-05-10 | 2020-07-28 | Sandisk Technologies Llc | Method for removing a bulk substrate from a bonded assembly of wafers |
TWI695467B (zh) * | 2019-07-10 | 2020-06-01 | 國立交通大學 | 積體電路散熱結構 |
CN111599679B (zh) * | 2020-05-29 | 2023-03-07 | 上海华虹宏力半导体制造有限公司 | 半导体器件的金属化方法 |
CN114823368A (zh) * | 2022-04-20 | 2022-07-29 | 上海华虹宏力半导体制造有限公司 | 一种功率器件的制造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030057563A1 (en) * | 2001-09-24 | 2003-03-27 | Nathan Richard J. | Integrated package and methods for making same |
JP2008226940A (ja) * | 2007-03-09 | 2008-09-25 | Matsushita Electric Ind Co Ltd | 半導体チップの製造方法 |
KR20140069275A (ko) * | 2011-10-28 | 2014-06-09 | 인텔 코오퍼레이션 | 스루-실리콘 비아들과 결합된 미세 피치 싱글 다마신 백사이드 금속 재배선 라인들을 포함하는 3d 상호연결 구조 |
US8912078B1 (en) * | 2014-04-16 | 2014-12-16 | Applied Materials, Inc. | Dicing wafers having solder bumps on wafer backside |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6104062A (en) * | 1998-06-30 | 2000-08-15 | Intersil Corporation | Semiconductor device having reduced effective substrate resistivity and associated methods |
JP2002319589A (ja) * | 2001-04-20 | 2002-10-31 | Hitachi Ltd | 半導体装置およびこれを用いた電力増幅器 |
EP1433195B1 (en) * | 2001-10-01 | 2006-05-24 | Xsil Technology Limited | Method and apparatus for machining substrates |
JP2004119718A (ja) | 2002-09-26 | 2004-04-15 | Shinko Electric Ind Co Ltd | 薄型半導体チップの製造方法 |
US7132321B2 (en) * | 2002-10-24 | 2006-11-07 | The United States Of America As Represented By The Secretary Of The Navy | Vertical conducting power semiconductor devices implemented by deep etch |
JP3908148B2 (ja) * | 2002-10-28 | 2007-04-25 | シャープ株式会社 | 積層型半導体装置 |
TWI221340B (en) * | 2003-05-30 | 2004-09-21 | Ind Tech Res Inst | Thin film transistor and method for fabricating thereof |
US7316979B2 (en) * | 2003-08-01 | 2008-01-08 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method and apparatus for providing an integrated active region on silicon-on-insulator devices |
FR2863773B1 (fr) * | 2003-12-12 | 2006-05-19 | Atmel Grenoble Sa | Procede de fabrication de puces electroniques en silicium aminci |
JP2006012889A (ja) * | 2004-06-22 | 2006-01-12 | Canon Inc | 半導体チップの製造方法および半導体装置の製造方法 |
US7507638B2 (en) | 2004-06-30 | 2009-03-24 | Freescale Semiconductor, Inc. | Ultra-thin die and method of fabricating same |
JP2006041135A (ja) * | 2004-07-26 | 2006-02-09 | Sumitomo Bakelite Co Ltd | 電子デバイスおよびその製造方法 |
JP2006156658A (ja) * | 2004-11-29 | 2006-06-15 | Toshiba Corp | 半導体装置 |
JP2006253402A (ja) * | 2005-03-10 | 2006-09-21 | Nec Electronics Corp | 半導体装置の製造方法 |
JP2007129166A (ja) * | 2005-11-07 | 2007-05-24 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2007266596A (ja) * | 2006-03-02 | 2007-10-11 | Semiconductor Energy Lab Co Ltd | 回路パターン及び薄膜トランジスタの作製方法、並びに該薄膜トランジスタを搭載した電子機器 |
US20070259463A1 (en) | 2006-05-02 | 2007-11-08 | Youssef Abedini | Wafer-level method for thinning imaging sensors for backside illumination |
WO2008015649A1 (en) * | 2006-08-04 | 2008-02-07 | Nxp B.V. | Method of manufacturing a double gate transistor |
TW200845302A (en) | 2007-05-09 | 2008-11-16 | Promos Technologies Inc | A method of two-step backside etching |
US7919801B2 (en) * | 2007-10-26 | 2011-04-05 | Hvvi Semiconductors, Inc. | RF power transistor structure and a method of forming the same |
TW200935506A (en) * | 2007-11-16 | 2009-08-16 | Panasonic Corp | Plasma dicing apparatus and semiconductor chip manufacturing method |
JP2009182217A (ja) * | 2008-01-31 | 2009-08-13 | Sumitomo Electric Ind Ltd | 半導体装置およびその製造方法 |
JP2010003906A (ja) * | 2008-06-20 | 2010-01-07 | Fujitsu Microelectronics Ltd | 半導体装置及びその製造方法 |
JP2011035322A (ja) * | 2009-08-05 | 2011-02-17 | Panasonic Corp | 半導体装置およびその製造方法 |
WO2012051133A2 (en) * | 2010-10-12 | 2012-04-19 | Io Semiconductor, Inc. | Vertical semiconductor device with thinned substrate |
EP2463896B1 (en) * | 2010-12-07 | 2020-04-15 | IMEC vzw | Method for forming through-substrate vias surrounded by isolation trenches with an airgap and corresponding device |
US8703581B2 (en) * | 2011-06-15 | 2014-04-22 | Applied Materials, Inc. | Water soluble mask for substrate dicing by laser and plasma etch |
US8496842B2 (en) * | 2011-09-12 | 2013-07-30 | Texas Instruments Incorporated | MEMS device fabricated with integrated circuit |
WO2013062590A1 (en) * | 2011-10-28 | 2013-05-02 | Intel Corporation | 3d interconnect structure comprising through-silicon vias combined with fine pitch backside metal redistribution lines fabricated using a dual damascene type approach |
JP6065198B2 (ja) * | 2012-02-21 | 2017-01-25 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
KR20140009731A (ko) | 2012-07-12 | 2014-01-23 | 삼성전자주식회사 | 방열부를 포함하는 반도체 칩 및 그 반도체 칩 제조 방법 |
JP5642126B2 (ja) * | 2012-08-30 | 2014-12-17 | 株式会社東芝 | 自己組織化パターン形成用材料およびパターン形成方法 |
JP5979547B2 (ja) * | 2012-11-01 | 2016-08-24 | パナソニックIpマネジメント株式会社 | エピタキシャルウェハ及びその製造方法 |
US9142614B2 (en) | 2013-07-05 | 2015-09-22 | Taiwan Semiconductor Manufacturing Company Limited | Isolation trench through backside of substrate |
KR20150118638A (ko) * | 2014-04-14 | 2015-10-23 | 에스케이하이닉스 주식회사 | 이미지 센서 및 그 제조 방법 |
-
2015
- 2015-10-15 US US14/884,090 patent/US10043676B2/en active Active
-
2016
- 2016-07-25 TW TW105123461A patent/TWI632608B/zh active
- 2016-09-29 JP JP2018517341A patent/JP7355496B2/ja active Active
- 2016-09-29 EP EP16855948.2A patent/EP3363040A4/en not_active Withdrawn
- 2016-09-29 WO PCT/US2016/054287 patent/WO2017065981A1/en active Application Filing
- 2016-09-29 CN CN201680059649.8A patent/CN108140568B/zh active Active
- 2016-09-29 KR KR1020187013408A patent/KR102135124B1/ko active Active
-
2018
- 2018-03-19 IL IL258223A patent/IL258223B2/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030057563A1 (en) * | 2001-09-24 | 2003-03-27 | Nathan Richard J. | Integrated package and methods for making same |
JP2008226940A (ja) * | 2007-03-09 | 2008-09-25 | Matsushita Electric Ind Co Ltd | 半導体チップの製造方法 |
KR20140069275A (ko) * | 2011-10-28 | 2014-06-09 | 인텔 코오퍼레이션 | 스루-실리콘 비아들과 결합된 미세 피치 싱글 다마신 백사이드 금속 재배선 라인들을 포함하는 3d 상호연결 구조 |
US8912078B1 (en) * | 2014-04-16 | 2014-12-16 | Applied Materials, Inc. | Dicing wafers having solder bumps on wafer backside |
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CN108140568B (zh) | 2023-02-17 |
TW201725621A (zh) | 2017-07-16 |
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IL258223A (en) | 2018-05-31 |
US10043676B2 (en) | 2018-08-07 |
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