JP2014003201A - 半導体装置及び配線基板、並びにそれらの製造方法 - Google Patents
半導体装置及び配線基板、並びにそれらの製造方法 Download PDFInfo
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- JP2014003201A JP2014003201A JP2012138474A JP2012138474A JP2014003201A JP 2014003201 A JP2014003201 A JP 2014003201A JP 2012138474 A JP2012138474 A JP 2012138474A JP 2012138474 A JP2012138474 A JP 2012138474A JP 2014003201 A JP2014003201 A JP 2014003201A
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- forming
- pedestal
- electrode pad
- opening
- metal layer
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Abstract
【解決手段】本半導体装置は、半導体基板と、前記半導体基板の主面に形成された電極パッドと、前記電極パッドと電気的に接続された突起電極と、を有し、前記突起電極は、前記電極パッド上に設けられた台座部と、前記台座部上に設けられた突起部と、を備え、前記突起部は、前記台座部よりも小幅の柱状部と、前記柱状部の前記台座部側の端部から前記台座部に向かって徐々に拡幅するテーパ部と、を備え、前記テーパ部側面の前記主面に垂直な平面に対する傾斜角は、前記台座部側面の前記平面に対する傾斜角及び前記柱状部側面の前記平面に対する傾斜角よりも大きい。
【選択図】図1
Description
[第1の実施の形態に係る半導体装置の構造]
図1は、第1の実施の形態に係る半導体装置を例示する断面図である。図1を参照するに、半導体装置1は、半導体基板10と、電極パッド20と、突起電極30とを有する。
次に、第1の実施の形態に係る半導体装置の製造方法について説明する。図2及び図3は、第1の実施の形態に係る半導体装置の製造工程を例示する図である。
第1の実施の形態の変形例では、第1の実施の形態とは異なる方法により切れ込み部55xを形成する例を示す。なお、第1の実施の形態の変形例において、既に説明した実施の形態と同一構成部品についての説明は省略する。
第2の実施の形態では、本発明を配線基板に適用する例を示す。なお、第2の実施の形態において、既に説明した実施の形態と同一構成部品についての説明は省略する。
2 配線基板
10、10A 半導体基板
20、80 電極パッド
30 突起電極
31 台座部
31A 金属層
32 突起部
33 柱状部
34 テーパ部
50 レジスト層
55 開口部
55x 切れ込み部
70 絶縁性部材
Claims (10)
- 半導体基板と、
前記半導体基板の主面に形成された電極パッドと、
前記電極パッドと電気的に接続された突起電極と、を有し、
前記突起電極は、前記電極パッド上に設けられた台座部と、前記台座部上に設けられた突起部と、を備え、
前記突起部は、前記台座部よりも小幅の柱状部と、前記柱状部の前記台座部側の端部から前記台座部に向かって徐々に拡幅するテーパ部と、を備え、
前記テーパ部側面の前記主面に垂直な平面に対する傾斜角は、前記台座部側面の前記平面に対する傾斜角及び前記柱状部側面の前記平面に対する傾斜角よりも大きい半導体装置。 - 前記柱状部の高さは、前記テーパ部の高さよりも高い請求項1記載の半導体装置。
- 絶縁性部材と、
前記絶縁性部材の主面に形成された電極パッドと、
前記電極パッドと電気的に接続された突起電極と、を有し、
前記突起電極は、前記電極パッド上に設けられた台座部と、前記台座部上に設けられた突起部と、を備え、
前記突起部は、前記台座部よりも小幅の柱状部と、前記柱状部の前記台座部側の端部から前記台座部に向かって徐々に拡幅するテーパ部と、を備え、
前記テーパ部側面の前記主面に垂直な平面に対する傾斜角は、前記台座部側面の前記平面に対する傾斜角及び前記柱状部側面の前記平面に対する傾斜角よりも大きい配線基板。 - 前記柱状部の高さは、前記テーパ部の高さよりも高い請求項3記載の配線基板。
- 半導体基板の主面に電極パッドを形成する工程と、
前記電極パッドと電気的に接続された突起電極を形成する工程と、を有し、
前記突起電極を形成する工程は、
前記半導体基板の主面に前記電極パッドを被覆する金属層を形成する工程と、
前記金属層上に、前記突起電極の形成位置に対応する部分に開口部を備えたレジスト層を形成する工程と、
前記開口部内に露出する前記レジスト層の前記金属層側の端部に環状の切れ込み部を形成する工程と、
前記切れ込み部を含む前記開口部内に金属を充填し、前記切れ込み部に形成されたテーパ部と、前記テーパ部上に前記テーパ部と一体に形成された柱状部と、を含む突起部を形成する工程と、
前記レジスト層を除去後、前記突起部をマスクとして前記金属層をエッチングし、前記電極パッドと前記テーパ部との間に台座部を形成して、前記台座部と前記突起部とを備えた前記突起電極を形成する工程と、を含む半導体装置の製造方法。 - 前記切れ込み部を形成する工程では、前記開口部内に薬液を供給し、前記薬液により前記開口部内に露出する前記レジスト層の前記金属層側の端部を溶解して前記切れ込み部を形成する請求項5記載の半導体装置の製造方法。
- 前記切れ込み部を形成する工程では、前記開口部内に水を供給し、前記水により前記開口部内に露出する前記レジスト層の前記金属層側の端部を膨潤剥離させて前記切れ込み部を形成する請求項5記載の半導体装置の製造方法。
- 絶縁性部材の主面に電極パッドを形成する工程と、
前記電極パッドと電気的に接続された突起電極を形成する工程と、を有し、
前記突起電極を形成する工程は、
前記絶縁性部材の主面に前記電極パッドを被覆する金属層を形成する工程と、
前記金属層上に、前記突起電極の形成位置に対応する部分に開口部を備えたレジスト層を形成する工程と、
前記開口部内に露出する前記レジスト層の前記金属層側の端部に環状の切れ込み部を形成する工程と、
前記切れ込み部を含む前記開口部内に金属を充填し、前記切れ込み部に形成されたテーパ部と、前記テーパ部上に前記テーパ部と一体に形成された柱状部と、を含む突起部を形成する工程と、
前記レジスト層を除去後、前記突起部をマスクとして前記金属層をエッチングし、前記電極パッドと前記テーパ部との間に台座部を形成して、前記台座部と前記突起部とを備えた前記突起電極を形成する工程と、を含む配線基板の製造方法。 - 前記切れ込み部を形成する工程では、前記開口部内に薬液を供給し、前記薬液により前記開口部内に露出する前記レジスト層の前記金属層側の端部を溶解して前記切れ込み部を形成する請求項8記載の配線基板の製造方法。
- 前記切れ込み部を形成する工程では、前記開口部内に水を供給し、前記水により前記開口部内に露出する前記レジスト層の前記金属層側の端部を膨潤剥離させて前記切れ込み部を形成する請求項8記載の配線基板の製造方法。
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