JP2006108690A - 再配線基板を用いたウェーハレベルチップスケールパッケージの製造方法 - Google Patents
再配線基板を用いたウェーハレベルチップスケールパッケージの製造方法 Download PDFInfo
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- JP2006108690A JP2006108690A JP2005295103A JP2005295103A JP2006108690A JP 2006108690 A JP2006108690 A JP 2006108690A JP 2005295103 A JP2005295103 A JP 2005295103A JP 2005295103 A JP2005295103 A JP 2005295103A JP 2006108690 A JP2006108690 A JP 2006108690A
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Abstract
【解決手段】再配線基板は、透明絶縁基板110に絶縁層をパターニングして形成されたパターン突起116と、その上に形成された再配線118とを含む。再配線基板は、ウェーハと別体に製造された後、ウェーハと接合される。パターン突起は、対をなし、一方は、ウェーハの活性面のチップパッド214に接触し、他方は、ウェーハのチップ領域に形成された貫通孔に対応する。貫通孔を介してウェーハの非活性面までに導電性配線223が形成され、導電性配線の一部に外部接続端子230が形成されている。すなわち、チップパッドは、再配線基板のパターン突起及び貫通孔内部の導電性配線により外部接続端子に電気的に連結されている。
【選択図】図4i
Description
図2a乃至図2dは、本発明の実施例に係る再配線基板100の製造方法を示す断面図である。
図3は、本発明の実施例に係るウェーハレベルチップスケールパッケージの製造方法に使われるウェーハ200の断面図である。
図4a乃至図4iは、本発明の実施例に係る再配線基板100を用いたウェーハレベルチップスケールパッケージの製造方法を示す断面図である。
110 透明絶縁基板
112 絶縁層
114 ダム
116 パターン突起
118 再配線
120 感光性接着剤
122 接着剤
200 ウェーハ
201 半導体基板
202 活性面
204 非活性面
214 チップパッド
216 保護膜
218 金属層
220 貫通孔
222 第1導電層
224 第2導電層
223 第1導電性配線
225 第2導電性配線
226 感光剤マスク
228 絶縁保護膜
230 外部接続端子
232 スクライブライン
240 感光剤
241 感光剤パターン
242 熱硬化性樹脂
Claims (24)
- (a)透明絶縁基板及び前記透明絶縁基板に形成された再配線を有する再配線基板を作製する工程と、
(b)活性面及び少なくとも一つの非活性面を有する半導体基板を有し、前記活性面にチップパッドが形成されたウェーハを用意する工程と、
(c)前記再配線の第1部分が前記チップパッドと接触するように、前記再配線基板を前記ウェーハに接合する工程と、
(d)前記活性面から前記非活性面に延びる貫通孔を前記ウェーハに、前記再配線の第2部分が前記貫通孔に露出するように形成する工程と、
(e)前記貫通孔及び前記非活性面に導電性配線を形成する工程と、
(f)前記非活性面に形成される前記導電性配線に外部接続端子を形成する工程と、
(g)前記再配線基板及び前記ウェーハをスクライブ線にそって分離する工程と、
を備えることを特徴とするウェーハレベルチップスケールパッケージの製造方法。 - 前記(a)工程は、
(a−1)前記透明絶縁基板を用意する工程と、
(a−2)前記透明絶縁基板に絶縁層を塗布する工程と、
(a−3)前記絶縁層をパターニングしてパターン突起を形成する工程と、
(a−4)前記パターン突起に前記再配線を形成する工程と、
を備えることを特徴とする請求項1に記載のウェーハレベルチップスケールパッケージの製造方法。 - 前記透明絶縁基板は、ガラス、石英、アクリル樹脂のうちいずれか1つからなることを特徴とする請求項1又は2に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(a−3)工程は、前記絶縁層をパターニングしてダムを形成する工程をさらに備えることを特徴とする請求項2に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(a−3)工程は、前記チップパッドに接続する第1パターン突起と、前記貫通孔に露出する第2パターン突起とが対をなすように、前記パターン突起を形成する工程であることを特徴とする請求項2に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記絶縁層は、ポリマーからなることを特徴とする請求項2、4及び5のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記再配線は、銅(Cu)、ニッケル(Ni)、チタニウム(Ti)、クロム(Cr)、タングステン(W)及びそれらの組み合わせのうちいずれか1つからなることを特徴とする請求項1から6のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(a−4)工程は、スパッタリング、電解メッキ、蒸着、無電解メッキ、スクリーンプリント、インクプリントのうちいずれか1つを用いて行われることを特徴とする請求項2に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記ウェーハは、前記活性面に形成された受光部をさらに備えることを特徴とする請求項1から8のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記ウェーハは、前記チップパッドに形成されたパッド金属層をさらに備えることを特徴とする請求項1から9のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記パッド金属層は、金(Au)、ニッケル(Ni)、アルミニウム(Al)、銅(Cu)、錫(Sn)及びそれらの組み合わせのうちいずれか1つからなることを特徴とする請求項10に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(c)工程における前記再配線基板と前記ウェーハの間の接合は、感光性接着剤を用いて行われることを特徴とする請求項1から11のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(c)工程で、前記再配線と前記チップパッドとは、インジウム(In)材質の接着剤を用いて接触されることを特徴とする請求項1から12のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(c)工程における前記再配線基板と前記ウェーハの間の接合は、異方性導電材またはナノ接続ペーストを用いて行われることを特徴とする請求項1から11のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(c)工程の後に、前記ウェーハの厚みを減少させるために、前記ウェーハの裏面を機械的に研磨する工程をさらに備えることを特徴とする請求項1から14のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記研磨工程によって前記ウェーハの厚みを、50μm乃至150μmにすることを特徴とする請求項15に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(d)工程は、レーザドリル、機械的ドリル、プラズマドライエッチング、反応性イオンエッチングのうちいずれか1つを用いて行われることを特徴とする請求項1から10のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(e)工程は、前記貫通孔及び前記非活性面に少なくとも一つの導電層を形成する工程と、前記導電層を選択的に除去して、前記導電性配線を形成する工程とを備えることを特徴とする請求項1から17のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(e)工程は、前記非活性面に、前記導電性配線と対応して感光剤パターンを形成する工程と、前記感光剤パターンを介して選択的に電解メッキを実施して、前記導電性配線を形成する工程とを備えることを特徴とする請求項1から18のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記導電性配線は、第1導電性配線と、前記第1導電性配線上に形成される第2導電性配線とを備えることを特徴とする請求項1から19のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記第1導電性配線は、タングステン(W)、チタニウム(Ti)、アルミニウム(Al)、ジルコニウム(Zr)、クロム(Cr)、銅(Cu)、金(Au)、銀(Ag)、鉛(Pb)、ニッケル(Ni)、インジウム錫化合物(ITO)及びそれらの組み合わせのうちいずれか1つからなることを特徴とする請求項20に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記第2導電性配線は、クロム(Cr)、チタニウム(Ti)、タングステン(W)、銅(Cu)、ニッケル(Ni)、金(Au)、チタニウムタングステン(TiW)及びそれらの組み合わせのうちいずれか1つからなることを特徴とする請求項20又は21に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(e)工程の後に、前記導電性配線を保護し端子位置を定義するように前記導電性配線上に絶縁保護膜を形成する工程をさらに備えることを特徴とする請求項1から22のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
- 前記(f)工程の前記外部接続端子は、前記半導体基板の裏面、又は前記半導体基板の少なくとも一つの側面に形成されることを特徴とする請求項1から23のいずれか1項に記載のウェーハレベルチップスケールパッケージの製造方法。
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JP2009117771A (ja) * | 2007-11-09 | 2009-05-28 | Fujikura Ltd | 半導体パッケージの製造方法 |
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KR101099583B1 (ko) | 2010-04-16 | 2011-12-28 | 앰코 테크놀로지 코리아 주식회사 | 웨이퍼 레벨의 칩 적층형 패키지 및 그 제조 방법 |
JP2012004601A (ja) * | 2011-10-03 | 2012-01-05 | Fujikura Ltd | 半導体パッケージの製造方法 |
TWI512851B (zh) * | 2012-09-01 | 2015-12-11 | Alpha & Omega Semiconductor | 帶有厚底部基座的晶圓級封裝器件及其製備方法 |
Also Published As
Publication number | Publication date |
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TWI273682B (en) | 2007-02-11 |
KR20060052055A (ko) | 2006-05-19 |
JP4993893B2 (ja) | 2012-08-08 |
TW200625564A (en) | 2006-07-16 |
US20060079019A1 (en) | 2006-04-13 |
US7264995B2 (en) | 2007-09-04 |
CN1779934A (zh) | 2006-05-31 |
KR100676493B1 (ko) | 2007-02-01 |
CN100416785C (zh) | 2008-09-03 |
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