JP4606145B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 88
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 238000002161 passivation Methods 0.000 claims description 64
- 230000004888 barrier function Effects 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 238000005530 etching Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000010410 layer Substances 0.000 description 74
- 238000010586 diagram Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Description
それぞれの前記電極パッドと電気的に接続されてなり、前記開口及びその端部とオーバーラップするように設けられたバンプと、 を含み、
前記パッシベーション膜の表面における前記バンプと接触する領域の少なくとも一部は凹凸面である。本発明によれば、パッシベーション膜表面に沿ったバンプの端部からパッシベーション膜の開口までの距離を長くすることができる。そのため、バンプの端部から浸入した水分が電極パッドに至ることを防止することができる。そのため、信頼性の高い半導体装置を提供することができる。
(2)この半導体装置において、
前記パッシベーション膜の表面における前記バンプと接触する領域はすべて凹凸面であってもよい。
(3)この半導体装置において、
前記電極パッドの表面の少なくとも一部は凹凸面をなし、
前記パッシベーション膜の表面の凹凸は、前記電極パッドの表面の凹凸に対応していてもよい。
(4)この半導体装置において、
前記電極パッドの表面における隣り合う2つの凹部の間の領域は平坦面であってもよい。
(5)この半導体装置において、
前記電極パッドの表面における前記開口から露出した領域の少なくとも一部は凹凸面であってもよい。
(6)この半導体装置において、
前記半導体基板は、導電パターンと、前記導電パターンを部分的に露出させる複数の貫通穴が形成された絶縁層とをさらに有し、
前記電極パッドは、前記貫通穴を充填するように設けられてなり、
前記電極パッドの凹部は、それぞれ、いずれかの前記貫通穴とオーバーラップしていてもよい。
(7)この半導体装置において、
前記貫通穴の前記導電パターンとは反対側の端部は、外に向かって拡がるテーパー穴をなし、
前記絶縁層の上端面における前記貫通穴の周縁部は平坦面をなしていてもよい。
(8)本発明に係る半導体装置の製造方法は、複数の電極パッドと、それぞれの前記電極パッドの中央領域を露出させる開口を有するパッシベーション膜とを有する半導体基板に、バリア層を形成すること、
前記バリア層に、前記パッシベーション膜のそれぞれの前記開口及びその端部とオーバーラップする導電部材を形成すること、及び、
前記導電部材をマスクとして前記バリア層をエッチングして、前記バリア層を部分的に除去することを含み、
前記パッシベーション膜の表面における前記開口の端部の少なくとも一部は凹凸面である。本発明によれば、半導体基板のパッシベーション膜表面に沿ったバンプの端部からパッシベーション膜の開口までの距離が長くなる。そのため、バンプの端部から浸入したエッチング液等が電極パッドに至ることを防止することができる。そのため、信頼性の高い半導体装置を製造することができる。
(9)この半導体装置の製造方法において、
前記パッシベーション膜の表面における前記開口の端部はすべて凹凸面であってもよい。
Claims (6)
- 電極パッドと、前記電極パッド上に位置する開口を有するパッシベーション膜と、を有する半導体基板と、
前記電極パッドと電気的に接続されてなり、前記開口及び前記開口の端部とオーバーラップするように設けられたバンプと、
を含み、
前記電極パッドの表面の少なくとも一部は、複数の第1の凹部を有する第1の凹凸面をなし、前記複数の第1の凹部のうち隣り合う2つの第1の凹部の間の領域が平坦面であり、
前記パッシベーション膜の表面における前記バンプと接触する領域の少なくとも一部は、複数の第2の凹部を有し前記第1の凹凸面に対応した凹凸を有する第2の凹凸面をなし、前記複数の第2の凹部のうち隣り合う2つの第2の凹部の間の領域が平坦面となっており、
前記半導体基板は、導電パターンと、前記導電パターン上に位置する複数の貫通穴が形成された絶縁層とをさらに有し、
前記電極パッドは、前記貫通穴を充填するように設けられてなり、
前記複数の第1の凹部は、それぞれ、前記複数の貫通穴のいずれかとオーバーラップしてなる、半導体装置。 - 請求項1記載の半導体装置において、
前記パッシベーション膜の表面における前記バンプと接触する領域はすべて前記第2の凹凸面である半導体装置。 - 請求項1又は請求項2記載の半導体装置において、
前記電極パッドの表面における前記開口とオーバーラップしている領域の少なくとも一部は前記第1の凹凸面である半導体装置。 - 請求項1から3のいずれか1項に記載の半導体装置において、
前記貫通穴の前記導電パターンとは反対側の端部は、外に向かって拡がるテーパー穴をなし、
前記絶縁層の上端面における前記貫通穴の周縁部は平坦面をなす半導体装置。 - 導電パターンと、前記導電パターン上に位置する絶縁層と、前記絶縁層の上に位置する電極パッドと、前記電極パッド上に位置する開口を有するパッシベーション膜と、を有する半導体基板に、バリア層を形成すること、
前記バリア層に、前記パッシベーション膜の前記開口及び前記開口の端部とオーバーラップする導電部材を形成すること、及び、
前記導電部材をマスクとして前記バリア層をエッチングして、前記バリア層を部分的に除去すること、
を含み、
前記絶縁層に複数の貫通穴を形成し、前記電極パッドは、前記貫通穴を充填するように形成され、
前記電極パッドの表面の少なくとも一部を、前記複数の貫通穴のいずれかとそれぞれオーバーラップしてなる複数の第1の凹部を有する第1の凹凸面をなすように形成し、
前記複数の第1の凹部のうち隣り合う2つの第1の凹部の間の領域を平坦面になるように形成し、前記パッシベーション膜の表面における前記バンプと接触する第1の領域の少なくとも一部を、複数の第2の凹部を有し前記第1の凹凸面に対応した凹凸を有する第2の凹凸面をなすように形成し、前記複数の第2の凹部のうち隣り合う2つの第2の凹部の間の領域を平坦面となるように形成する、半導体装置の製造方法。 - 請求項5記載の半導体装置の製造方法において、
前記パッシベーション膜の表面における前記開口の端部はすべて第2の凹凸面である半導体装置の製造方法。
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US11/262,728 US7598612B2 (en) | 2004-12-09 | 2005-11-01 | Semiconductor device and manufacturing method thereof |
CNB2005101289787A CN100517670C (zh) | 2004-12-09 | 2005-12-02 | 半导体装置及其制造方法 |
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JP5502257B2 (ja) * | 2006-08-29 | 2014-05-28 | セイコーインスツル株式会社 | 半導体装置 |
JP5138248B2 (ja) * | 2007-03-23 | 2013-02-06 | オンセミコンダクター・トレーディング・リミテッド | 半導体装置及びその製造方法 |
JP2008244134A (ja) * | 2007-03-27 | 2008-10-09 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
JP5192171B2 (ja) * | 2007-04-17 | 2013-05-08 | オンセミコンダクター・トレーディング・リミテッド | 半導体装置及びその製造方法 |
JP5100233B2 (ja) * | 2007-07-27 | 2012-12-19 | アズビル株式会社 | 柱状支持体及びその製造方法 |
US8901736B2 (en) * | 2010-05-28 | 2014-12-02 | Taiwan Semiconductor Manufacturing Company, Ltd. | Strength of micro-bump joints |
US9601434B2 (en) | 2010-12-10 | 2017-03-21 | STATS ChipPAC Pte. Ltd. | Semiconductor device and method of forming openings through insulating layer over encapsulant for enhanced adhesion of interconnect structure |
US9559044B2 (en) | 2013-06-25 | 2017-01-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Package with solder regions aligned to recesses |
US10686158B2 (en) * | 2017-03-31 | 2020-06-16 | Innolux Corporation | Display device |
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- 2005-11-01 US US11/262,728 patent/US7598612B2/en not_active Expired - Fee Related
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JP2001053100A (ja) * | 1999-08-05 | 2001-02-23 | Seiko Instruments Inc | バンプ電極を有する半導体装置 |
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US20060125095A1 (en) | 2006-06-15 |
CN100517670C (zh) | 2009-07-22 |
US7598612B2 (en) | 2009-10-06 |
CN1787211A (zh) | 2006-06-14 |
JP2006165382A (ja) | 2006-06-22 |
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