KR100850212B1 - 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의제조방법 - Google Patents
균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의제조방법 Download PDFInfo
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- KR100850212B1 KR100850212B1 KR1020070038981A KR20070038981A KR100850212B1 KR 100850212 B1 KR100850212 B1 KR 100850212B1 KR 1020070038981 A KR1020070038981 A KR 1020070038981A KR 20070038981 A KR20070038981 A KR 20070038981A KR 100850212 B1 KR100850212 B1 KR 100850212B1
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Abstract
Description
Claims (30)
- 본드패드가 외부로 노출된 반도체 기판을 준비하는 단계;상기 반도체 기판 위에 다층막으로 이루어진 씨앗층을 형성하는 단계;상기 씨앗층 위에 정해진 패턴을 갖는 금속 배선을 도금 방식으로 형성하는 단계;상기 다층막으로 이루어진 씨앗층에서 도금을 위해 사용된 최상층만 제거하되 모든 금속 배선을 상기 씨앗층에 의해 연결되도록 하는 단계;상기 금속 배선에 무전해 도금으로 표면도전층을 형성하는 단계; 및상기 반도체 기판 위에 잔류하는 씨앗층을 제거하는 단계를 구비하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 씨앗층은 하부 확산방지층과 상부 씨앗층의 2층 구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제2항에 있어서,상기 확산방지층은, Ti, TiN, TiW, Cr, Al 중에서 선택된 하나의 막질인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 씨앗층은 3층 구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제4항에 있어서,상기 3층 구조의 씨앗층은 하부의 티타늄(Ti)층, 중간의 질화티타늄(TiN)층 및 상부에 구리(Cu)층이 순차적으로 적층된 구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 정해진 패턴을 갖는 금속 배선은 구리 범프, 구리를 포함하는 금속 범프, 니켈 범프 중에서 선택된 하나인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 정해진 패턴을 갖는 금속 배선은 본드 패드 재배치 패턴인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층은 골드층을 포함하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층은 니켈층을 포함하는 다층 구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층은 팔라듐층을 포함하는 다층구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층은 주석층, 주석합금층 및 인듐층 중에서 선택된 하나를 포함하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층은 팔라듐층, 니켈층, 골드층이 순차적으로 적층된 구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제4항에 있어서,상기 표면도전층을 형성하는 공정은, 상기 3층 구조의 씨앗층 중에서 중간에 형성된 막질을 제거하는 공정을 더 구비하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층을 형성하는 단계는,상기 표면도전층과 상기 반도체 기판 상부가 접하는 영역에 씨앗층의 확산방지층이 잔류하도록 표면도전층을 형성하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제3항에 있어서,상기 상부 씨앗층을 제거한 단계 후에상기 하부 확산방지층에 대한 표면처리 공정을 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제15항에 있어서,상기 표면처리 공정은 산소 플라즈마 처리인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제6항에 있어서,상기 씨앗층 위에 도금 방식으로 금속배선을 형성하는 단계 후에,상기 금속배선을 상부를 평탄화시키는 단계를 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제1항에 있어서,상기 표면도전층을 형성하고 상기 반도체 기판 위에 잔류하는 씨앗층을 제거하는 단계 후에, 상기 반도체 기판에 대한 열처리(anneal process) 공정을 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 본드패드가 노출된 반도체 기판 전면에 티타늄층 및 구리층의 2층 구조로 이루어진 씨앗층을 형성하는 단계;상기 본드패드가 노출되게 상기 반도체 기판 위에 포토레지스트 패턴을 형성하는 단계;상기 본드패드 위에 도금 방식으로 구리 범프를 형성하고, 상기 포토레지스트 패턴을 제거하는 단계;상기 씨앗층 상부의 구리층을 제거하되 모든 구리 범프가 씨앗층의 티타늄층을 통해 연결되도록 하는 단계;상기 구리 범프에 표면도전층을 무전해 도금으로 형성하는 단계;상기 표면도전층이 형성된 반도체 기판에 잔류하는 씨앗층의 티타늄층을 제거하는 단계를 구비하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제19항에 있어서,상기 표면도전층은 골드층, 주석층, 인듐층 및 주석합금층 중에서 선택된 하나인 것을 특징으로 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제19항에 있어서,상기 표면도전층은 골드층, 니켈층, 팔라듐층, 주석층, 주석합금층 및 인듐층 중에서 선택된 하나를 포함하는 다층구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제19항에 있어서,상기 씨앗층 상부의 구리층을 제거한 단계 후에상기 씨앗층의 티타늄층에 대한 표면처리 공정을 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제21항에 있어서,상기 표면처리 공정은 산소 플라즈마 처리인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제19항에 있어서,상기 도금 방식으로 구리 범프를 형성하는 단계 후에,상기 구리범프의 상부를 평탄화시키는 단계를 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제19항에 있어서,상기 표면도전층을 형성하고 상기 반도체 기판 위에 잔류하는 씨앗층을 제거하는 단계 후에, 상기 반도체 기판에 대한 열처리(anneal process) 공정을 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 패시베이션층에 의해 본드패드가 노출된 반도체 기판을 준비하는 단계;상기 반도체 기판 위에 본드패드 재배치를 위한 제1 절연막을 형성하고 본드패드를 다시 노출시키는 단계;상기 반도체 기판 전면에 티타늄층과 구리층의 2층 구조로 이루어진 씨앗층을 형성하는 단계;상기 반도체 기판 위에 도금 방식으로 본드패드 재배선용 구리패턴을 형성하는 단계;상기 씨앗층의 상부층인 구리층을 제거하되 모드 본드패드 재배선용 구리패턴은 상기 씨앗층을 통하여 연결시키는 단계;상기 본드패드 재배선용 구리패턴에 표면도전층을 무전해 도금으로 형성하는 단계;상기 반도체 기판 전면에 잔류하는 씨앗층을 제거하는 단계; 및상기 표면도전층이 형성된 본드패드 재배선용 구리패턴에서 위치 이동이 이루어진 본드 패드를 노출시키는 제2 절연막을 형성하는 단계를 구비하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제26항에 있어서,상기 표면도전층은 니켈층, 골드층, 주석층, 인듐층 및 주석합금층 중에서 선택된 하나의 단층 구조인 것을 특징으로 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제26항에 있어서,상기 표면도전층은 니켈층, 골드층, 주석층, 인듐층 및 주석합금층 및 인듐층 중에서 선택된 하나를 포함하는 다층구조인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제26항에 있어서,상기 씨앗층의 상부 구리층을 제거한 단계 후에상기 씨앗층의 티타늄층에 대한 표면처리 공정을 더 진행하는 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
- 제29항에 있어서,상기 표면처리 공정은 산소 플라즈마 처리인 것을 특징으로 하는 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의 제조방법.
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KR1020070038981A KR100850212B1 (ko) | 2007-04-20 | 2007-04-20 | 균일한 무전해 도금 두께를 얻을 수 있는 반도체 소자의제조방법 |
US12/073,310 US7786581B2 (en) | 2007-04-20 | 2008-03-04 | Method of manufacturing a semiconductor device having an even coating thickness using electro-less plating, and related device |
CN2008101446705A CN101325167B (zh) | 2007-04-20 | 2008-04-18 | 制造具有均匀涂层厚度的半导体器件的方法及相关器件 |
JP2008110530A JP5525140B2 (ja) | 2007-04-20 | 2008-04-21 | 均一な無電解メッキ厚さを得ることができる半導体素子の製造方法 |
US12/870,998 US20100320500A1 (en) | 2007-04-20 | 2010-08-30 | Method of manufacturing a semiconductor device having an even coating thickness using electro-less plating and related device |
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Also Published As
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US20100320500A1 (en) | 2010-12-23 |
JP2008270816A (ja) | 2008-11-06 |
CN101325167A (zh) | 2008-12-17 |
CN101325167B (zh) | 2011-06-08 |
JP5525140B2 (ja) | 2014-06-18 |
US7786581B2 (en) | 2010-08-31 |
US20080258299A1 (en) | 2008-10-23 |
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