KR100676493B1 - 재배선 기판을 이용한 웨이퍼 레벨 칩 스케일 패키지의제조 방법 - Google Patents
재배선 기판을 이용한 웨이퍼 레벨 칩 스케일 패키지의제조 방법 Download PDFInfo
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- KR100676493B1 KR100676493B1 KR1020050093667A KR20050093667A KR100676493B1 KR 100676493 B1 KR100676493 B1 KR 100676493B1 KR 1020050093667 A KR1020050093667 A KR 1020050093667A KR 20050093667 A KR20050093667 A KR 20050093667A KR 100676493 B1 KR100676493 B1 KR 100676493B1
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Abstract
Description
Claims (24)
- (a) 투명 절연기판의 제1면에 재배선이 형성된 재배선 기판을 제조하는 단계;(b) 반도체 기판의 활성면에 칩 패드가 형성된 웨이퍼를 제공하는 단계;(c) 상기 재배선과 상기 칩 패드가 접촉하도록 상기 재배선 기판과 상기 웨이퍼를 접합하는 단계;(d) 상기 재배선의 일부가 상기 웨이퍼의 비활성면으로 노출되도록 상기 웨이퍼에 관통구멍을 형성하는 단계;(e) 상기 관통구멍과 상기 비활성면에 도전성 배선을 형성하는 단계;(f) 상기 도전성 배선의 일부에 외부접속 단자를 형성하는 단계; 및(g) 상기 재배선 기판과 상기 웨이퍼를 절단하여 칩 단위로 분리하는 단계를 포함하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (a) 단계는,(a-1) 상기 투명 절연기판을 제공하는 단계;(a-2) 상기 투명 절연기판의 제1면에 절연층을 도포하는 단계;(a-3) 상기 절연층을 패터닝하여 패턴 돌기를 형성하는 단계; 및(a-4) 상기 패턴 돌기에 상기 재배선을 형성하는 단계를 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방 법.
- 제1항 또는 제2항에 있어서, 상기 투명 절연기판은 유리, 석영, 아크릴 수지 중의 어느 하나로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제2항에 있어서, 상기 (a-3) 단계는 상기 절연층을 패터닝하여 댐을 형성하는 단계를 더 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제2항에 있어서, 상기 (a-3) 단계는 상기 칩 패드에 대응하는 제1 패턴 돌기와 상기 관통구멍에 대응하는 제2 패턴 돌기가 쌍을 이루도록 상기 패턴 돌기를 형성하는 단계임을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제2항, 제4항 및 제5항 중의 어느 한 항에 있어서, 상기 절연층은 폴리머로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항 또는 제2항에 있어서, 상기 재배선은 구리(Cu), 니켈(Ni), 티타늄(Ti), 크롬(Cr), 텅스텐(W) 및 그 조합 중의 어느 하나로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제2항에 있어서, 상기 (a-4) 단계는 스퍼터링, 전해도금, 증착, 무전해 도금, 스크린 프린팅, 잉크 프린팅 중의 어느 하나를 이용하여 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 웨이퍼는 상기 활성면에 형성된 수광부를 더 구비하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항 또는 제9항에 있어서, 상기 웨이퍼는 상기 칩 패드에 형성된 패드 금속층을 더 구비하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제10항에 있어서, 상기 패드 금속층은 금(Au), 니켈(Ni), 알루미늄(Al), 구리(Cu), 주석(Sn) 및 그 조합 중의 어느 하나로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (c) 단계는 감광성 접착제를 이용하여 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항 또는 제12항에 있어서, 상기 (c) 단계의 상기 재배선과 상기 칩 패드 는 인듐(In) 재질의 접착제를 이용하여 접합되는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (c) 단계는 이방성 도전체 또는 나노 접속 페이스트를 이용하여 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (c) 단계 후에, 상기 웨이퍼의 두께를 감소시키기 위하여 상기 웨이퍼의 후면을 기계적으로 연마하는 단계를 더 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제15항에 있어서, 후면 연마된 후의 상기 웨이퍼의 두께는 50㎛ 내지 150㎛인 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (d) 단계는 레이저 드릴, 기계적 드릴, 플라즈마 건식 식각, 반응성 이온 식각 중의 어느 하나를 이용하여 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (e) 단계는 상기 관통구멍과 상기 비활성면에 도전층을 형성하는 단계와, 상기 도전층을 선택적으로 제거하여 상기 도전성 배선을 형성 하는 단계를 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (e) 단계는 상기 비활성면에 상기 도전성 배선과 동일한 패턴을 가지는 감광제 패턴을 형성하는 단계와, 상기 감광제 패턴을 통하여 선택적으로 전해도금을 실시하여 상기 도전성 배선을 형성하는 단계를 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항, 제18항 및 제19항 중의 어느 한 항에 있어서, 상기 도전성 배선은 제1 도전성 배선과 그 위에 형성된 제2 도전성 배선을 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제20항에 있어서, 상기 제1 도전성 배선은 텅스텐(W), 티타늄(Ti), 알루미늄(Al), 지르코늄(Zr), 크롬(Cr), 구리(Cu), 금(Au), 은(Ag), 납(Pb), 니켈(Ni), 인듐 주석 화합물(ITO) 및 그 조합 중의 어느 하나로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제20항에 있어서, 상기 제2 도전성 배선은 크롬(Cr), 티타늄(Ti), 텅스텐(W), 구리(Cu), 니켈(Ni), 금(Au), 티타늄텅스텐(TiW) 및 그 조합 중의 어느 하나로 이루어지는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (e) 단계 후에, 상기 도전성 배선을 보호하는 절연 보호막의 형성 단계를 더 포함하는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
- 제1항에 있어서, 상기 (f) 단계의 상기 외부접속 단자는 상기 웨이퍼의 후면 또는 측면 쪽에 형성되는 것을 특징으로 하는 웨이퍼 레벨 칩 스케일 패키지의 제조 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040080155 | 2004-10-08 | ||
| KR20040080155 | 2004-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20060052055A KR20060052055A (ko) | 2006-05-19 |
| KR100676493B1 true KR100676493B1 (ko) | 2007-02-01 |
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| Country | Link |
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| US (1) | US7264995B2 (ko) |
| JP (1) | JP4993893B2 (ko) |
| KR (1) | KR100676493B1 (ko) |
| CN (1) | CN100416785C (ko) |
| TW (1) | TWI273682B (ko) |
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-
2005
- 2005-10-06 TW TW094134905A patent/TWI273682B/zh not_active IP Right Cessation
- 2005-10-06 KR KR1020050093667A patent/KR100676493B1/ko not_active Expired - Fee Related
- 2005-10-07 JP JP2005295103A patent/JP4993893B2/ja not_active Expired - Fee Related
- 2005-10-07 US US11/245,962 patent/US7264995B2/en not_active Expired - Fee Related
- 2005-10-08 CN CNB2005101059910A patent/CN100416785C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060052055A (ko) | 2006-05-19 |
| CN100416785C (zh) | 2008-09-03 |
| CN1779934A (zh) | 2006-05-31 |
| JP4993893B2 (ja) | 2012-08-08 |
| TW200625564A (en) | 2006-07-16 |
| US20060079019A1 (en) | 2006-04-13 |
| US7264995B2 (en) | 2007-09-04 |
| TWI273682B (en) | 2007-02-11 |
| JP2006108690A (ja) | 2006-04-20 |
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