KR100394808B1 - 웨이퍼 레벨 적층 칩 패키지 및 그 제조 방법 - Google Patents
웨이퍼 레벨 적층 칩 패키지 및 그 제조 방법 Download PDFInfo
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- KR100394808B1 KR100394808B1 KR10-2001-0043445A KR20010043445A KR100394808B1 KR 100394808 B1 KR100394808 B1 KR 100394808B1 KR 20010043445 A KR20010043445 A KR 20010043445A KR 100394808 B1 KR100394808 B1 KR 100394808B1
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- Prior art keywords
- layer
- redistribution
- substrate
- stacked
- semiconductor device
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 51
- 239000004065 semiconductor Substances 0.000 claims abstract description 240
- 229910052751 metal Inorganic materials 0.000 claims abstract description 129
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- 239000000758 substrate Substances 0.000 claims abstract description 120
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- 229920000642 polymer Polymers 0.000 claims abstract description 21
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- 239000010410 layer Substances 0.000 claims description 295
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 47
- 238000005520 cutting process Methods 0.000 claims description 32
- 239000010949 copper Substances 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
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- 239000010931 gold Substances 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 9
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
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- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
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- Engineering & Computer Science (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
Abstract
Description
Claims (16)
- (A) 제 1 절연층과, 상기 제 1 절연층 위에 소정의 패턴으로 형성된 배선층과, 상기 제 1 절연층과 상기 배선층 위에 형성되는 제 2 절연층과, 상기 제 2 절연층 사이로 노출되며 상기 배선층과 연결된 기판 패드를 포함하는 재배선 기판과;(B) 상기 재배선 기판 위에 3차원으로 적층되는 적어도 하나 이상의 하부 반도체 소자로서,반도체 기판과,상기 반도체 기판에 형성된 보호막 사이로 노출되는 다수개의 칩 패드들과,상기 보호막 위에 소정의 패턴으로 형성되어 상기 칩 패드와 전기적으로 연결되는 재배선층과,상기 보호층과 상기 재배선층 위에 형성하되, 상기 기판 패드에 대응되게 상기 배선층의 일부가 노출되게 접속구멍이 형성된 중합체층과,상기 접속구멍으로 노출된 상기 재배선층에 형성되어 전기적으로 연결되어 있는 내부접속단자와,상기 접속구멍에 노출된 재배선층 위의 상기 반도체 기판을 관통하여 형성된 구멍에 충전된 도전성 충전물을 포함하는 하부 반도체 소자와;(C) 상기 재배선 기판에 적층된 최상부의 상기 하부 반도체 소자의 상기 도전성 충전물 위에 플립 칩 본딩되는 재배선된 상부 반도체 소자로서,반도체 기판과,상기 반도체 기판에 형성된 보호막 사이로 노출되는 다수개의 칩 패드들과,상기 보호막 위에 소정의 패턴으로 형성되어 상기 칩 패드와 전기적으로 연결되는 재배선층과,상기 보호층과 상기 재배선층 위에 형성하되, 상기 도전성 충전물에 대응되게 상기 재배선층의 일부가 노출되게 접속구멍이 형성된 중합체층과,상기 접속구멍으로 노출된 상기 재배선층에 접합되어 상기 도전성 충전물에 플립 칩 본딩되는 내부접속단자를 포함하는 상부 반도체 소자와;(D) 상기 재배선 기판 위에 적층된 상기 하부 및 상부 반도체 소자 사이에 충전되어 내부접속단자를 보호하는 충전층과;(E) 상기 재배선 기판의 제 1 절연층이 형성된 면을 제외한 상기 하부 반도체 소자, 상부 반도체 소자 및 재배선 기판을 덮는 금속 덮개; 및(F) 상기 재배선 기판의 제 1 절연층 사이로 노출된 상기 배선층에 형성되어 전기적으로 연결되는 외부접속단자;를 포함하며,상기 하부 반도체 소자 중에서, 상기 재배선 기판 위의 상기 하부 반도체 소자는 상기 재배선 기판의 기판 패드에 상기 내부접속단자가 플립 칩 본딩되고,상기 하부 반도체 소자들 간에는 상대적으로 아래에 위치하는 하부 반도체 소자의 도전성 충전물 위에 상대적으로 위에 위치하는 하부 반도체 소자의 내부접속단자가 플립 칩 본딩되어 3차원으로 적층되는 것을 특징으로 웨이퍼 레벨 적층 칩 패키지.
- 제 1항에 있어서, 상기 충전층은,상기 재배선 기판과 상기 하부 반도체 소자 사이에 충전되어 상기 재배선 기판에 플립 칩 본딩된 상기 내부접속단자를 보호하는 제 1 충전층과;적층된 상기 하부 반도체 소자 사이에 충전되어 상기 하부 반도체 소자를 연결하는 상기 내부접속단자를 보호하는 제 2 충전층과;상기 하부 반도체 소자와 상부 반도체 소자 사이에 충전되어 상기 상부 반도체 소자의 내부접속단자를 보호하는 제 3 충전층을 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- 제 2항에 있어서, 상기 도전성 충전물이 격리되게 상기 하부 반도체 소자와 도전성 충전층 위에 상기 금속 덮개와 연결되는 방열 금속층이 형성된 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- 제 3항에 있어서, 상기 도전성 충전물 위에 형성된 방열 금속층에 상기 하부 및 상부 반도체 소자의 내부접속단자가 플립 칩 본딩되는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- 제 4항에 있어서, 상기 방열 금속층은 티타늄 또는 크롬을 수천Å 두께 이하로 형성한 다음, 구리 또는 니켈을 수천Å 내지 수㎛ 두께로 형성한 도금층인 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- 제 5항에 있어서, 상기 금속 덮개는,상기 하부 반도체 소자 외측의 재배선 기판 위에 형성된 제 1 금속벽과;상기 제 1 금속벽 위의 상기 방열 금속층 위에 각각 형성된 제 2 금속벽; 및상기 제 2 금속벽과 상기 상부 반도체 소자 위에 형성된 덮개 금속층을 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- 제 6항에 있어서, 상기 제 1 금속벽 및 제 2 금속벽은, 구리 또는 니켈을 20㎛ 내지 150㎛ 두께로 형성한 도금층인 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지.
- (a) 칩 패드들을 재배치하는 재배선층에 접속된 내부접속단자를 갖는 제 1 및 제 2 반도체 소자들을 준비하는 단계와;(b) 상기 제 1 및 제 2 반도체 소자들이 3차원으로 적층되는 소자 실장 영역과, 상기 소자 실장 영역을 구분하는 기판 절단 영역을 포함하는 재배선 원판과, 상기 소자 실장 영역 상부면에 형성되며 다수개의 패드구멍이 형성된 제 1 절연층, 상기 패드구멍에 충전되어 상기 제 1 절연층 위에 소정의 패턴으로 형성된 배선층과, 상기 제 1 절연층과 상기 배선층 위에 형성되는 제 2 절연층과, 상기 제 2 절연층 사이로 노출되며 상기 배선층과 연결되는 기판 패드를 포함하는 재배선 기판을 준비하는 단계와;(c) 상기 재배선 기판의 상기 기판 절단 영역을 따라서 소정의 높이로 제 1 금속벽을 형성하는 단계와;(d) 상기 제 1 금속벽 사이의 상기 소자 실장 영역에 형성된 기판 패드에 상기 제 1 반도체 소자의 제 1 내부접속단자를 플립 칩 본딩하는 단계와;(e) 상기 제 1 반도체 소자와 상기 재배선 기판 사이의 플립 칩 본딩된 부분을 보호하기 위해서 액상의 성형수지를 충전하여 제 1 충전층을 형성하는 단계와;(f) 상기 제 1 금속벽의 상부면이 노출되게 상기 제 1 반도체 소자의 후면과 상기 제 1 충전층을 연마하는 단계와;(g) 상기 제 1 재배선층 위에 구멍을 형성하고, 상기 구멍을 도전성 충전물로 충전하는 단계와;(h) 상기 제 1 금속벽 위에 상기 제 1 금속벽의 두께에 대응되게 제 2 금속벽을 형성하는 단계와;(i) 제 2 반도체 소자의 제 2 내부접속단자를 상기 도전성 충전물 위에 플립 칩 본딩하는 단계와;(j) 상기 제 1 반도체 소자와 상기 제 2 반도체 소자 사이의 플립 칩 본딩된 부분을 보호하기 위해서 액상의 성형수지를 충전하여 제 2 충전층을 형성하는 단계와;(k) 상기 제 2 금속벽의 상부면이 노출되게 상기 제 2 반도체 소자의 후면과 제 2 충전층을 연마하는 단계와;(l) 상기 재배선 기판의 기판 절단 영역을 따라서 상기 제 2 금속벽에서 소정의 깊이의 상기 재배선 원판까지 절단하는 단계와;(m) 상기 재배선 원판을 식각하여 개별 소자로 분리하는 단계; 및(n) 상기 개별 소자의 배선기판의 패드구멍에 충전된 상기 배선층에 외부접속단자를 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 8항에 있어서, 상기 (a) 단계의 상기 제 1 및 제 2 반도체 소자들은,(a1) 반도체 기판에 형성된 보호막 사이로 노출되는 다수개의 칩 패드들을 포함하는 반도체 웨이퍼를 제공하는 단계와;(a2) 상기 보호층 위에 소정의 패턴으로 형성되고, 상기 칩 패드와 전기적으로 연결되는 재배선층을 형성하는 단계와;(a3) 상기 보호층과 상기 재배선층 위에 중합체층을 형성하는 단계와;(a4) 상기 중합체층 사이로 노출된 상기 재배층의 일부에 내부접속단자를 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 8항에 있어서, 상기 (b) 단계는,(b1) 대수개의 소자 실장 영역과, 상기 소자 실장 영역을 구분하는 기판 절단 영역을 포함하는 실리콘 소재의 재배선 원판을 제공하는 단계와;(b2) 상기 재배선 원판 위에 제 1 절연층을 형성하는 단계와;(b3) 상기 제 1 절연층 위에 소정의 패턴으로 형성되고, 상기 제 1 절연층 사이로 노출된 패드구멍에 충전되게 배선층을 형성하는 단계와;(b4) 상기 제 1 절연층과 상기 재배선층 위에 제 2 절연층을 형성하는 단계와;(b5) 상기 제 2 절연층 사이로 상기 배선층의 일부가 노출되게 기판 패드를 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 8항에 있어서, 상기 (c) 단계는,(c1) 상기 기판 패드 외측의 상기 제 2 절연층 위에 금속기저층을 형성하는 단계와;(c2) 상기 기판 절단 영역 위의 상기 금속기저층을 따라서 소정의 높이로 제 1 금속벽을 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 11항에 있어서, 상기 제 1 금속벽은 구리 또는 니켈을 20㎛ 내지 150㎛ 두께로 도금하는 단계인 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 8항에 있어서, 상기 (h) 단계는,(h1) 상기 제 1 반도체 소자, 상기 제 1 충전층 및 제 1 금속벽 위에 형성하되, 상기 도전성 충전물이 격리되게 방열 금속층을 형성하는 단계와;(h2) 상기 제 1 금속벽 위의 상기 방열 금속층 위에 상기 제 2 금속벽을 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 13항에 있어서, 상기 (i) 단계에서 상기 제 2 반도체 소자의 내부접속단자는 상기 도전성 충전물 위의 상기 방열 금속층 위에 플립 칩 본딩되는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- 제 8항에 있어서, 상기 (l) 단계는,(l1) 상기 재배선 기판의 기판 절단 영역을 따라서 상기 제 2 금속벽에서 소정의 깊이의 상기 재배선 기판의 절연층까지 1차 절단하는 단계와;(l2) 상기 덮개 금속층과 절단된 면으로 노출된 금속층을 보호하기 위해서 금 이멀즌하는 단계와;(l3) 상기 1차 절단된 부분을 따라서 소정의 깊이로 상기 재배선 원판까지 2차 절단하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
- (a) 칩 패드들을 재배치하는 재배선층에 접속된 내부접속단자를 갖는 제 1및 제 2 반도체 소자들을 준비하는 단계와;(b) 상기 제 1 및 제 2 반도체 소자들이 3차원으로 적층되는 소자 실장 영역과, 상기 소자 실장 영역을 구분하는 기판 절단 영역을 포함하는 재배선 원판과, 상기 소자 실장 영역 상부면에 형성되며 다수개의 패드구멍이 형성된 제 1 절연층, 상기 패드구멍에 충전되어 상기 제 1 절연층 위에 소정의 패턴으로 형성된 배선층과, 상기 제 1 절연층과 상기 배선층 위에 형성되는 제 2 절연층과, 상기 제 2 절연층 사이로 노출되며 상기 배선층과 연결되는 기판 패드를 포함하는 재배선 기판을 준비하는 단계와;(c) 상기 재배선 기판의 기판 패드에 상기 제 1 반도체 소자의 내부접속단자를 플립 칩 본딩하는 단계와;(d) 상기 제 1 반도체 소자와 상기 재배선 기판 사이의 플립 칩 본딩된 부분을 보호하기 위해서 액상의 성형수지를 충전하여 제 1 충전층을 형성하는 단계와;(e) 소정의 깊이로 상기 제 1 반도체 소자의 후면과 상기 제 1 충전층을 함께 연마하는 단계와;(f) 상기 내부접속단자가 접속된 상기 제 1 재배선층 위에 구멍을 형성하고, 상기 구멍을 도전성 충전물로 충전하는 단계와;(g) 상기 제 2 반도체 소자의 제 2 내부접속단자를 상기 제 1 반도체 소자의 상기 도전성 충전물 위에 플립 칩 본딩하는 단계와;(h) 상기 제 1 반도체 소자와 상기 제 2 반도체 소자 사이의 플립 칩 본딩된 부분을 보호하기 위해서 액상의 성형수지를 충전하여 제 2 충전층을 형성하는 단계와;(i) 소정의 깊이로 상기 제 2 반도체 소자의 후면과 상기 제 2 충전층을 연마하는 단계와;(j) 상기 재배선 기판의 기판 절단 영역을 따라서 상기 제 2 충전층에서 소정의 깊이의 재배선 원판까지 절단하는 단계와;(k) 상기 재배선 원판을 식각하여 개별 소자로 분리하는 단계와;(l) 상기 재배선 기판의 제 1 절연층이 형성된 면을 제외한 개별 소자의 외측면을 금속 덮개를 덮는 단계; 및(m) 상기 재배선 기판의 패드구멍에 충전된 상기 배선층에 외부접속단자를 형성하는 단계;를 포함하는 것을 특징으로 하는 웨이퍼 레벨 적층 칩 패키지의 제조 방법.
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Also Published As
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DE10234208A1 (de) | 2003-02-13 |
US6607938B2 (en) | 2003-08-19 |
US20030017647A1 (en) | 2003-01-23 |
JP2003110054A (ja) | 2003-04-11 |
KR20030008615A (ko) | 2003-01-29 |
DE10234208B4 (de) | 2007-05-24 |
JP4098578B2 (ja) | 2008-06-11 |
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