JP7230419B2 - 半導体装置、半導体装置の製造方法 - Google Patents
半導体装置、半導体装置の製造方法 Download PDFInfo
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- JP7230419B2 JP7230419B2 JP2018195029A JP2018195029A JP7230419B2 JP 7230419 B2 JP7230419 B2 JP 7230419B2 JP 2018195029 A JP2018195029 A JP 2018195029A JP 2018195029 A JP2018195029 A JP 2018195029A JP 7230419 B2 JP7230419 B2 JP 7230419B2
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Description
面23bに滑らかに連なるようにフィレットFを形成する。より具体的にフィレットFは、図3Bに示すように、IGBT素子3の下面32aから金属層21の側面23bに向かって内側に凹むフィレットF1と、側面23bに沿って凹部23下端の隅に連なるフィレットF2と、によって構成される。
上記実施の形態に記載の半導体装置は、絶縁板の一方の面に金属層が形成された絶縁回路基板と、前記金属層に接合材を介して接合された半導体素子と、を備え、前記半導体素子は、平面視多角形状を有し、前記絶縁回路基板の前記金属層は、前記半導体素子の少なくとも1つの角部に対応する位置に前記絶縁板が露出する凹部を有することを特徴とする。
2 :絶縁回路基板
3 :IGBT素子(半導体素子)
4 :ダイオード素子(半導体素子)
5 :接続部材
10 :筐体
11 :ベース板
12 :第1電極
13 :ゲート端子
14 :エミッタ端子
15 :第2電極
16 :P端子
17 :C端子
18 :N端子
20 :絶縁板
21 :金属層
22 :金属層
23 :凹部
23a :底面
23b :側面
23c :側面
24 :凹部
25 :円弧部
30 :ゲート電極
31 :センスエミッタ電極
32 :角部
32a :下面
42 :角部
B :界面
F :フィレット
F1 :フィレット
F2 :フィレット
S :接合材
W1 :配線部材
W2 :配線部材
W3 :配線部材
W4 :配線部材
W5 :配線部材
X :空間
θ :角
Claims (5)
- 絶縁板の一方の面に金属層が形成された絶縁回路基板と、
前記金属層に接合材を介して接合された平面視多角形状の半導体素子と、を備え、
前記絶縁回路基板の前記金属層は、前記半導体素子の少なくとも1つの角部に対応する位置に前記絶縁板が露出する凹部を有し、
前記凹部は、平面視において前記角部を規定する前記半導体素子の二辺に接するように湾曲する円弧部を有する
ことを特徴とする半導体装置。 - 前記凹部と当該凹部に対向する前記半導体素子の前記角部との間に、前記接合材が介在しない空間が形成されることを特徴とする請求項1に記載の半導体装置。
- 前記半導体素子は一方の面と、前記一方の面の反対側の対向面を有し、
前記金属層は前記凹部を規定する内側の側面を有し、
前記接合材は、前記凹部に対向する前記対向面から前記内側の側面に連なるようにフィレットを形成することを特徴とする請求項1又は請求項2に記載の半導体装置。 - 前記半導体素子は、平面視矩形状を有し、
前記凹部は、前記半導体素子の四隅に対応する位置に形成されることを特徴とする請求項1から請求項3のいずれかに記載の半導体装置。 - 絶縁板の一方の面に金属層により回路パターンが形成された絶縁回路基板を準備し、
前記金属層上に接合材を介して平面視多角形状の半導体素子を配置し、
前記接合材を溶融して前記半導体素子を前記金属層に接合し、
前記絶縁回路基板は、前記回路パターンにおいて、前記半導体素子の少なくとも1つの角部に対応する位置に前記金属層により前記絶縁板が露出する凹部が形成されており、
前記凹部は、平面視において前記角部を規定する前記半導体素子の二辺に接するように湾曲する円弧部を有する
半導体装置の製造方法。
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