JP2019087644A - 半導体装置及び半導体装置の製造方法 - Google Patents
半導体装置及び半導体装置の製造方法 Download PDFInfo
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- JP2019087644A JP2019087644A JP2017214885A JP2017214885A JP2019087644A JP 2019087644 A JP2019087644 A JP 2019087644A JP 2017214885 A JP2017214885 A JP 2017214885A JP 2017214885 A JP2017214885 A JP 2017214885A JP 2019087644 A JP2019087644 A JP 2019087644A
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Abstract
Description
V>A+(t×S) ・・・(1)
11 半導体基板
12 層間絶縁膜
13 チップ電極
15 下層絶縁膜
15A 開口部
22 再配線
30 上層絶縁膜
30A 開口部
42 台座部
42A 凹部
50 半田膜
51 合金層
60 外部接続端子
60a 半田ペースト
Claims (16)
- 電極を有する半導体基板を用意する工程と、
前記電極に接続された配線を形成する工程と、
前記配線を部分的に露出させる第1の開口部を有する第1の絶縁膜を形成する工程と、
前記配線の、前記第1の開口部から露出した部分に接続され、前記第1の開口部に対応する凹部を有する導電体からなる台座部を形成する工程と、
前記台座部の表面に半田膜を形成する工程と、
第1の熱処理により前記半田膜を構成する半田を溶融させ、溶融した半田によって前記凹部を埋める工程と、
を含む半導体装置の製造方法。 - 前記第1の熱処理後に、前記半田膜の表面を覆う半田ペーストを形成する工程と、
第2の熱処理により、前記半田ペースト及び前記半田膜を構成する半田を溶融させ、前記台座部に接続された外部接続端子を形成する工程と、
を更に含む請求項1に記載の製造方法。 - 前記半田膜は、めっき処理により形成され、
前記半田ペーストは、印刷により形成され、
前記半田膜及び前記台座部は、前記半田ペーストの内部に埋設される
請求項2に記載の製造方法。 - 前記半田膜は、前記第1の開口部を内包する開口部を備えた第1のマスクを用いて、前記半田膜の表面の高さ位置が、前記第1のマスクの表面の高さ位置を超えない厚さで形成される
請求項3に記載の製造方法。 - 前記半田ペーストは、前記台座部及び前記半田膜を内包する第2のマスクを用いた印刷により形成される
請求項3または請求項4に記載の製造方法。 - 前記第1の熱処理において、前記半田膜と前記台座部との界面に、前記台座部の材料と前記半田膜の材料とを含む合金層が形成される
請求項1から請求項5のいずれか1項に記載の製造方法。 - 前記半田膜の成膜時における体積をV、前記凹部の体積をA、前記合金層の厚さをt、前記台座部の前記半田膜との接触面における面積をSとしたとき、
V>A+(t×S)を満たす
請求項6に記載の製造方法。 - 前記合金層は、前記台座部の全域に亘り、前記半田膜で覆われる
請求項6または請求項7に記載の製造方法。 - 前記第1の熱処理後において、前記半田膜の表面が平坦である
請求項1から請求項8のいずれか1項に記載の製造方法。 - 前記電極を部分的に露出させる第2の開口部を有する第2の絶縁膜を形成する工程を更に含み、
前記配線は、前記第2の絶縁膜の表面に形成され、前記電極の、前記第2の開口部から露出した部分に接続される
請求項1から請求項9のいずれか1項に記載の製造方法。 - 電極を有する半導体基板と、
前記電極に接続された配線と、
前記配線を部分的に露出させる第1の開口部を有する第1の絶縁膜と、
前記配線の、前記第1の開口部から露出した部分に接続され、前記第1の開口部に対応する凹部を有する導電体からなる台座部と、
前記台座部の表面に設けられ、前記凹部を埋める半田膜と、
を含む半導体装置。 - 前記半田膜と前記台座部との界面に、前記台座部の材料と前記半田膜の材料とを含む合金層を有する
請求項11に記載の半導体装置。 - 前記半田膜の成膜時における体積をV、前記凹部の体積をA、前記合金層の厚さをt、前記台座部の前記半田膜との接触面における面積をSとしたとき、
V>A+(t×S)を満たす
請求項12に記載の半導体装置。 - 前記合金層は、前記台座部の全域に亘り、前記半田膜で覆われている
請求項12または請求項13に記載の半導体装置。 - 前記半田膜の表面は平坦である
請求項11から請求項14のいずれか1項に記載の半導体装置。 - 前記台座部を内部に埋設した外部接続端子を更に含む
請求項11から請求項15のいずれか1項に記載の半導体装置。
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JPH02271533A (ja) * | 1989-04-12 | 1990-11-06 | Fujitsu Ltd | 半導体装置の製造方法 |
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