KR100979497B1 - 웨이퍼 레벨 패키지 및 그 제조방법 - Google Patents
웨이퍼 레벨 패키지 및 그 제조방법 Download PDFInfo
- Publication number
- KR100979497B1 KR100979497B1 KR1020080056817A KR20080056817A KR100979497B1 KR 100979497 B1 KR100979497 B1 KR 100979497B1 KR 1020080056817 A KR1020080056817 A KR 1020080056817A KR 20080056817 A KR20080056817 A KR 20080056817A KR 100979497 B1 KR100979497 B1 KR 100979497B1
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- KR
- South Korea
- Prior art keywords
- passivation layer
- metal
- bump
- under bump
- buffer pattern
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 110
- 239000002184 metal Substances 0.000 claims abstract description 110
- 238000002161 passivation Methods 0.000 claims abstract description 71
- 239000000758 substrate Substances 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- 238000000059 patterning Methods 0.000 claims description 9
- 239000004593 Epoxy Substances 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 9
- 239000004020 conductor Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
Description
Claims (12)
- 상면에 복수개의 칩 패드를 구비한 기판;상기 칩 패드를 노출시키는 제1 패시베이션층;상기 제1 패시베이션층을 관통하여 상기 칩 패드에 접속되는 비아;상기 제1 패시베이션층 상에 형성되고, 상기 비아에 접속되는 금속 배선층;상기 제1 패시베이션층 상에 금속 배선층과 연결되도록 형성된 언더범프메탈;상기 언더범프메탈의 중심에 형성되고, 트렌치를 통해 상기 언더범프메탈과 분리된 버퍼 패턴;상기 언더범프메탈이 노출되도록 상기 제1 패시베이션층 상에 형성된 제2 패시베이션층;상기 버퍼 패턴 상에 형성된 제1 범프; 및상기 트렌치를 충진시키고, 상기 제1 범프 및 언더범프메탈 상에 형성된 제2 범프;를 포함하는 웨이퍼 레벨 패키지.
- 제1항에 있어서,상기 버퍼 패턴은 상기 언더범프메탈 중심에 원형으로 형성된 웨이퍼 레벨 패키지.
- 제1항에 있어서,상기 트렌치는 상기 제1 패시베이션층 상부가 노출되도록 형성된 웨이퍼 레벨 패키지.
- 제1항에 있어서,상기 제2 범프는 상기 제1 범프보다 많은 은(Ag)의 함유량을 갖는 웨이퍼 레벨 패키지.
- 제1항에 있어서,상기 제2 범프는 에폭시 물질로 형성된 웨이퍼 레벨 패키지.
- 상면에 복수개의 칩 패드를 구비한 기판;상기 칩 패드를 노출시키는 제1 패시베이션층;상기 제1 패시베이션층을 관통하여 상기 칩 패드에 접속되는 비아;상기 제1 패시베이션층 상에 형성되고, 상기 비아에 접속되는 금속 배선층;상기 제1 패시베이션층 상에 금속 배선층과 연결되도록 형성된 언더범프메탈;상기 언더범프메탈의 중심에 트렌치를 통해 상기 언더범프메탈과 분리된 버퍼 패턴;상기 언더범프메탈이 노출되도록 상기 제1 패시베이션층 상에 형성된 제2 패시베이션층; 및상기 트렌치를 충진시키고, 상기 버퍼 패턴 및 언더범프메탈 상에 형성된 범프;를 포함하는 웨이퍼 레벨 패키지.
- 복수개의 칩 패드가 형성된 기판을 준비하는 단계;상기 기판 상에 제1 패시베이션층을 형성하는 단계;상기 제1 패시베이션층을 패터닝하여 상기 칩 패드를 노출시키는 비아를 형성하는 단계;상기 비아를 포함하는 제1 패시베이션층 상에 금속물질을 도포하는 단계;상기 금속물질을 패터닝하여 상기 비아와 연결되는 금속 배선층, 상기 금속 배선층과 전기적으로 연결된 언더범프메탈 및 상기 언더범프메탈의 중심에 형성된트렌치를 통해 상기 언더범프메탈과 분리된 버퍼 패턴을 형성하는 단계;상기 언더범프메탈 상부가 오픈되도록 제 2 패시베이션층을 형성하는 단계;상기 버퍼 패턴 상에 제1 범프를 형성하는 단계; 및상기 트렌치를 충진시키고, 상기 제1 범프 및 언더범프메탈 상에 제2 범프를 형성하는 단계;를 포함하는 웨이퍼 레벨 패키지 제조방법.
- 제7항에 있어서,상기 버퍼 패턴은 상기 언더범프메탈 중심에 원형으로 형성되는 웨이퍼 레벨 패키지 제조방법.
- 제7항에 있어서,상기 트렌치는 상기 제1 패시베이션층 상부가 노출되도록 형성되는 웨이퍼 레벨 패키지 제조방법.
- 제7항에 있어서,상기 제2 범프는 상기 제1 범프보다 많은 은(Ag)의 함유량을 갖도록 형성하는 웨이퍼 레벨 패키지 제조방법.
- 제7항에 있어서,상기 제2 범프는 에폭시 물질을 사용하여 형성되는 웨이퍼 레벨 패키지 제조방법.
- 복수개의 칩 패드가 형성된 기판을 준비하는 단계;상기 기판 상에 제1 패시베이션층을 형성하는 단계;상기 제1 패시베이션층을 패터닝하여 상기 칩 패드를 노출시키는 비아를 형성하는 단계;상기 비아를 포함하는 제1 패시베이션층 상에 금속물질을 도포하는 단계;상기 금속물질을 패터닝하여 상기 비아와 연결되는 금속 배선층, 상기 금속 배선층과 전기적으로 연결된 언더범프메탈 및 상기 언더범프메탈의 중심에 형성된 트렌치를 통해 상기 언더범프메탈과 분리된 버퍼 패턴을 형성하는 단계;상기 언더범프메탈 상부가 오픈되도록 제 2 패시베이션층을 형성하는 단계; 및상기 트렌치를 충진시키고, 상기 버퍼 패턴 및 언더범프메탈 상에 범프를 형성하는 단계;를 포함하는 웨이퍼 레벨 패키지 제조방법.
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KR1020080056817A KR100979497B1 (ko) | 2008-06-17 | 2008-06-17 | 웨이퍼 레벨 패키지 및 그 제조방법 |
US12/230,793 US7663250B2 (en) | 2008-06-17 | 2008-09-04 | Wafer level package and manufacturing method thereof |
JP2008239910A JP4772844B2 (ja) | 2008-06-17 | 2008-09-18 | ウエハレベルパッケージ及びその製造方法 |
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Also Published As
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KR20090131045A (ko) | 2009-12-28 |
JP2009302500A (ja) | 2009-12-24 |
US7663250B2 (en) | 2010-02-16 |
US20090309216A1 (en) | 2009-12-17 |
JP4772844B2 (ja) | 2011-09-14 |
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