JP4988843B2 - 半導体フリップチップパッケージ用の基板およびプロセス - Google Patents
半導体フリップチップパッケージ用の基板およびプロセス Download PDFInfo
- Publication number
- JP4988843B2 JP4988843B2 JP2009522071A JP2009522071A JP4988843B2 JP 4988843 B2 JP4988843 B2 JP 4988843B2 JP 2009522071 A JP2009522071 A JP 2009522071A JP 2009522071 A JP2009522071 A JP 2009522071A JP 4988843 B2 JP4988843 B2 JP 4988843B2
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- JP
- Japan
- Prior art keywords
- bump
- patterned
- solder
- substrate
- conductive circuit
- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
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- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
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- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09509—Blind vias, i.e. vias having one side closed
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3452—Solder masks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3485—Applying solder paste, slurry or powder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Wire Bonding (AREA)
Description
図14、15、16は、基板に取り付けられたチップを示す先行技術のフリップチップ(米国特許第6,975,035号明細書)の概略的な側断面図である。ここでは、種々の取付け方法によって、バンプが基板の凹部内に実質的に挿入されている。図14のバンプ110は、基板の金属パッドに直接接合され、図15のバンプ110は、凹部内に挿入される前に、導電ペースト170によって被覆され、この導電ペーストとバンプとの間に相互接続部が形成されている。図16では、導電ペースト170は、バンプに代わって、パッド上に配置され、バンプ110と導電ペースト170との間に相互接続部が形成されている。図14に示されるパッケージ構造は、図4に示されるような高さずれの問題を解消していない。図15、16に示される取付け方法は、むらのあるバンプ高さおよび基板の不完全部分によって生じる非平面性の問題を解消しているが、図3に見られるような位置ずれの危険性が依然として存在している。図15の場合、導電ペースト170は、パッドの露出領域を超えてさらに拡がることができない。図16の場合、バンプ表面のわずかな部分しか導電ペースト170と接触していない。いずれの場合も、導電領域が小さいので、はんだ接合信頼性が低い。また、バンプ110が図16の凹部内に挿入される場合、導電ペースト170は、基板130の表面上において分割されることになる。
812 突起
820 チップ
830 基板
832 絶縁層
834 エッチング孔
840 バンプパッド
860 導電層
Claims (11)
- 活性面を有する回路チップと、
前記活性面上に配置された複数のソルダバンプと、
ソルダペーストと、
基板と、
を備える半導体電子パッケージであって、
前記基板は、
複数のソルダバンプパッドを有する第1のパターン化された導電回路層と、
前記第1のパターン化された導電回路層を覆うとともに、前記ソルダバンプパッドを露出させる複数の孔を画定する第1の絶縁層と、
を備え、
前記孔の内壁は導電性であり、
前記ソルダペーストは前記孔内に配置され、
前記回路チップは、前記活性面が前記第1の絶縁層の孔に面した状態で、前記ソルダバンプの各々が、対応する孔を通して対応するソルダバンプパッドに実質的に位置合わせされるように配置され、
各ソルダバンプは、前記対応する孔の内側で前記ソルダペーストに貫入し、前記対応するソルダバンプパッドと電気的に接続し、
前記ソルダペーストは、前記ソルダバンプの各々と、前記対応する孔の前記導電性の内壁と、の間の空間を充填して、前記ソルダペーストと前記内壁との間の接触面積を増加させる、
半導体電子パッケージ。 - 前記ソルダバンプがスタッドバンプを含む、請求項1に記載のパッケージ。
- 前記ソルダバンプの各々の直径が前記基板と実質的に平行な方向に配置され、
前記対応する孔の各々が、前記ソルダバンプの直径と実質的に平行な方向に直径を有し、
前記孔の直径が前記ソルダバンプの直径の少なくとも2倍である、
請求項2に記載のパッケージ。 - 前記回路チップが接着剤によって前記基板に接着される、請求項3に記載のパッケージ。
- 前記基板が、
複数のパターン化された追加の導電回路層と、
複数の追加の絶縁層と、
をさらに備え、
前記パターン化された追加の導電回路層と前記追加の絶縁層とは交互に積層され、
前記パターン化された追加の導電回路層の各々の少なくとも一部は、介在する追加の絶縁層を貫通して少なくとも部分的に配置された導体を介して、隣接するパターン化された追加の導電回路層の一部に電気的に結合され、
前記第1のパターン化された導電回路層は、前記複数のパターン化された追加の導電回路層および前記複数の追加の絶縁層の上に配置される、
請求項1に記載のパッケージ。 - 前記絶縁層が、耐炎性FR−4もしくはFR−5を含む、請求項1に記載のパッケージ。
- 前記第1のパターン化された導電回路層、前記ソルダバンプパッド、および前記導電性の内壁が、銅、金、ニッケル、またはそれらの組合せを含む、請求項1に記載のパッケージ。
- 複数のソルダバンプパッドを有する第1のパターン化された導電回路層を形成するステップと、
前記ソルダバンプパッドを露出させる複数の孔を有し、前記第1のパターン化された導電回路層を覆う第1の絶縁層を形成するステップであって、前記孔の各々は、回路チップの複数のソルダバンプのうちの対応する1つのソルダバンプの少なくとも一部を収容するように配置され、前記孔の各々は導電性の内壁を備えている、ステップと、
前記孔に導電性のソルダペーストを充填するステップと、
前記ソルダバンプを前記対応する孔の内側で前記ソルダペーストに貫入させて、前記対応するソルダバンプパッドと電気的に接続させることによって、前記回路チップ上の前記ソルダバンプを前記第1のパターン化された導電回路層に取り付けるステップと、
前記ソルダペーストを形崩れさせて、前記ソルダバンプの各々と前記対応する孔の前記導電性内壁との間の空間に充填することによって、前記ソルダペーストと前記内壁との間の接触面積を増加させるために、前記ソルダペーストを溶融するステップと、
を含む方法。 - 複数のパターン化された追加の導電回路層を形成するステップと、
複数の追加の絶縁層を形成するステップと、
をさらに含み、
前記パターン化された追加の導電回路層と前記追加の絶縁層とは交互に積層され、
前記パターン化された追加の導電回路層の各々の少なくとも一部は、介在する追加の絶縁層を貫通して少なくとも部分的に配置された導体を介して、隣接するパターン化された追加の導電回路層の一部に電気的に結合され、
前記第1のパターン化された導電回路層は、前記複数のパターン化された追加の導電回路層および前記複数の追加の絶縁層の上に配置される、
請求項8に記載の方法。 - 前記孔の各々が、前記ソルダバンプの直径と実質的に平行な方向に直径を有し、前記孔の直径が前記ソルダバンプの直径の少なくとも2倍である、請求項8に記載の方法。
- 前記第1の絶縁層上に接着層を形成するステップをさらに含み、前記接着層は、前記ソルダバンプパッドを露出するように前記第1の絶縁層の孔にしたがってパターン化される、請求項8に記載の方法。
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US11/496,111 | 2006-07-31 | ||
US11/496,111 US7652374B2 (en) | 2006-07-31 | 2006-07-31 | Substrate and process for semiconductor flip chip package |
PCT/CN2007/002228 WO2008017232A1 (en) | 2006-07-31 | 2007-07-23 | Substrate and process for semiconductor flip chip package |
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KR (1) | KR20090042777A (ja) |
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Also Published As
Publication number | Publication date |
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US7652374B2 (en) | 2010-01-26 |
CN101496168B (zh) | 2011-06-01 |
US20080023829A1 (en) | 2008-01-31 |
KR20090042777A (ko) | 2009-04-30 |
EP2054933A4 (en) | 2010-04-21 |
EP2054933A1 (en) | 2009-05-06 |
JP2009545180A (ja) | 2009-12-17 |
MY151533A (en) | 2014-05-30 |
WO2008017232A1 (en) | 2008-02-14 |
CN101496168A (zh) | 2009-07-29 |
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