JP2012084835A - パワーモジュール及びその製造方法 - Google Patents
パワーモジュール及びその製造方法 Download PDFInfo
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Abstract
【解決手段】パワーモジュールは絶縁基板1と、絶縁基板1上に形成された導体パターン2と、導体パターン2と接合部材により接続された半導体チップより構成される。半導体チップ上面には電極5が形成されており、パワーモジュールは電極5と、前記半導体チップ外周端面と、前記半導体チップ外周端面と連続する前記接合部材と、導体パターン2と、絶縁基板1の表面とを被覆し、無機材料からなる絶縁膜6とを備える。
【選択図】図1
Description
2 導体パターン
3a、3b 接合部材
4 半導体チップ
5、5a、5b 電極
6 絶縁膜
7 接地電極
8 放熱板
9 金属ワイヤ
10 ケース
11 絶縁性ゲル剤
21 高圧ガスボンベ
22、24 搬送管
23 エアロゾル発生器
25 真空チャンバー
26 ノズル
27 XYステージ
28 基板
29 真空ポンプ
60 無機膜
Claims (11)
- 絶縁基板と、
前記絶縁基板上に形成された導体パターンと、
前記導体パターンと接合部材により接続された半導体チップと、
前記半導体チップ上面に形成された電極と、
前記電極と、前記半導体チップと、前記接合部材と、前記導体パターンと、前記絶縁基板の表面とを被覆し、無機材料からなる絶縁膜とを備えることを特徴とするパワーモジュール。 - 前記絶縁基板の前記導体パターンが形成された面と反対側の面に形成された接地電極と、前記接地電極上に形成された放熱板を備え、前記接地電極と前記放熱板を無機材料からなる絶縁膜で被覆することを特徴とする請求項1に記載のパワーモジュール。
- 前記電極は電気的に独立した複数の電極より形成され、前記絶縁膜が半導体チップ上に形成された電気的に独立した複数の電極の表面及び前記電極間を被覆することを特徴とする請求項1または2のいずれかに記載のパワーモジュール。
- 前記絶縁膜が、酸化アルミニウムから構成されることを特徴とする請求項1乃至3のいずれかに記載のパワーモジュール。
- 前記絶縁膜を構成する無機材料が1種類の無機材料又は2種類以上の無機材料の複合物からなり、前記絶縁膜が前記導体パターンの熱膨張率より小さい値の熱膨張率を有することを特徴とする請求項1乃至4のいずれかに記載のパワーモジュール。
- 前記絶縁膜がエアロゾルデポジション法に代表される粒子衝突成膜法により形成されることを特徴とする請求項1乃至5のいずれかに記載のパワーモジュールの製造方法。
- 絶縁基板と、
前記絶縁基板上に形成された導体パターンと、
前記導体パターンと接合部材により接続された半導体チップと、
前記半導体チップ上面に形成された電極と、
前記電極と前記導体パターンとを接続する金属ワイヤと、
前記金属ワイヤと前記電極の接合部の少なくとも一部を被覆する無機材料からなる無機膜とを備えることを特徴とするパワーモジュール。 - 前記無機膜を構成する無機材料が絶縁性の材料からなり、前記半導体チップ外周端面と、前記半導体チップ外周端面と連続する前記接合部材と、前記導体パターンと、前記絶縁基板の表面とを被覆することを特徴とする請求項7に記載のパワーモジュール。
- 前記無機膜を構成する無機材料が1種類の無機材料又は2種類以上の無機材料の複合物からなり、前記無機膜が前記金属ワイヤの熱膨張率より小さい値の熱膨張率を有することを特徴とする請求項7または8に記載のパワーモジュール。
- 前記無機膜に圧縮応力が残留することを特徴とする請求項7乃至9のいずれかに記載のパワーモジュール。
- 前記無機膜がエアロゾルデポジション法に代表される粒子衝突成膜法により形成されることを特徴とする請求項7乃至10のいずれかに記載のパワーモジュールの製造方法。
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JP2016018904A (ja) * | 2014-07-09 | 2016-02-01 | 日産自動車株式会社 | 半導体装置 |
JP2017034075A (ja) * | 2015-07-31 | 2017-02-09 | 富士電機株式会社 | 電子デバイス |
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WO2024095813A1 (ja) * | 2022-10-31 | 2024-05-10 | 日本発條株式会社 | 部品実装基板、部品実装基板の製造方法、電子モジュール、及び電子モジュールの製造方法 |
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