JP2021125546A - 半導体モジュール及び半導体モジュールの製造方法 - Google Patents
半導体モジュール及び半導体モジュールの製造方法 Download PDFInfo
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- JP2021125546A JP2021125546A JP2020017650A JP2020017650A JP2021125546A JP 2021125546 A JP2021125546 A JP 2021125546A JP 2020017650 A JP2020017650 A JP 2020017650A JP 2020017650 A JP2020017650 A JP 2020017650A JP 2021125546 A JP2021125546 A JP 2021125546A
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Abstract
【解決手段】半導体モジュール(1)は、絶縁板(20)の上面に回路パターン(22)が配置され、絶縁板の下面に放熱板(21)が配置された積層基板(2)と、上面にコレクタ電極(30)が配置され、下面にエミッタ電極(32)とゲート電極(31)が配置され、回路パターンの上面にバンプ(B)を介してエミッタ電極とゲート電極が接合された半導体素子(3)と、を備える。バンプは、金属焼結材によって接合部分に比べて中間部分が窪んだ形状に形成される。
【選択図】図4
Description
上記実施の形態に記載の半導体モジュールは、絶縁板の上面に回路パターンが配置され、前記絶縁板の下面に放熱板が配置された積層基板と、上面にコレクタ電極が配置され、下面にエミッタ電極とゲート電極が配置され、前記回路パターンの上面にバンプを介して前記エミッタ電極と前記ゲート電極が接合された半導体素子と、を備え、前記バンプは、金属焼結材によって接合部分に比べて中間部分が窪んだ形状に形成されることを特徴とする。
2 :積層基板
3 :半導体素子
4 :ブロック電極
5 :封止樹脂
10 :冷却器
10a :フィン
10b :溝
20 :絶縁板
21 :放熱板
22 :回路パターン
23 :コレクタ回路パターン
24 :ゲート回路パターン
24a :L部
24b :H部
25 :エミッタ回路パターン
25a :エミッタ部
25b :長尺部
25c :長尺部
25d :センスエミッタ部
30 :コレクタ電極
31 :ゲート電極
32 :エミッタ電極
40 :コレクタ電極ブロック
41 :ゲート電極ブロック
42 :エミッタ電極ブロック
43 :センスエミッタ電極ブロック
44 :平板部
45 :突出部
46 :貫通穴
B :バンプ
B1 :第1接合部
B2 :第2接合部
B3 :窪み部
D1 :第1接合部の外径
D2 :第2接合部の外径
D3 :第3接合部の外径
H :バンプの塗布高さ
S :接合材
T :バンプの接合高さ
θ1 :第1接合部が接合面に対して成す角
θ2 :第2接合部が接合面に対して成す角
Claims (15)
- 絶縁板の上面に回路パターンが配置され、前記絶縁板の下面に放熱板が配置された積層基板と、
上面にコレクタ電極が配置され、下面にエミッタ電極とゲート電極が配置され、前記回路パターンの上面にバンプを介して前記エミッタ電極と前記ゲート電極が接合された半導体素子と、を備え、
前記バンプは、金属焼結材によって接合部分に比べて中間部分が窪んだ形状に形成されることを特徴とする半導体モジュール。 - 前記バンプは、
前記半導体素子側に接合された第1接合部と、
前記積層基板側に接続された第2接合部と、
前記第1接合部と前記第2接合部との間で窪んだ窪み部と、を有し、
前記第1接合部及び前記第2接合部は、接合面に対して成す角が鋭角となるフィレット形状を有することを特徴とする請求項1に記載の半導体モジュール。 - 前記窪み部は、前記第1接合部と前記第2接合部との中央部分に位置することを特徴とする請求項2に記載の半導体モジュール。
- 前記窪み部は、前記半導体素子側に偏って配置されていることを特徴とする請求項2に記載の半導体モジュール。
- 前記第1接合部のフィレット形状が前記半導体素子に対する接合面と成す角は、前記第2接合部のフィレット形状が前記積層基板に対する接合面と成す角よりも小さいことを特徴とする請求項4に記載の半導体モジュール。
- 前記エミッタ電極は、前記ゲート電極よりも前記積層基板の外側に位置していることを特徴とする請求項1から請求項5のいずれかに記載の半導体モジュール。
- 前記エミッタ電極に接合された前記バンプは複数設けられていることを特徴とする請求項6に記載の半導体モジュール。
- 前記コレクタ電極に接合されたブロック電極を更に備え、
前記ブロック電極は、
前記半導体素子の上方を覆う平板部と、
前記平板部の両端から前記回路パターンに向かって突出して前記回路パターンに接合された一対の突出部と、を有することを特徴とする請求項1から請求項7のいずれかに記載の半導体モジュール。 - 前記一対の突出部は、前記絶縁板の対向する2つの辺に沿って配置され、
前記エミッタ電極は、前記ゲート電極よりも前記一対の突出部側に位置していることを特徴とする請求項8に記載の半導体モジュール。 - 前記エミッタ電極は、複数の前記バンプによって前記回路パターンに接合され、
複数の前記バンプは、前記一対の突出部の延在方向に沿って並んで配置されていることを特徴とする請求項9に記載の半導体モジュール。 - 前記半導体素子は、平面視で前記平板部の下方に2×2で4つ配置され、各半導体素子の前記ゲート電極は、前記平板部の中央で向き合うように配置されることを特徴とする請求項8から請求項10のいずれかに記載の半導体モジュール。
- 絶縁板の上面に回路パターンが配置され、前記絶縁板の下面に放熱板が配置された積層基板に半導体素子を接合する半導体モジュールの製造方法であって、
前記半導体素子の接合面にペースト状の金属焼結材で構成されるバンプを先端が先細りの円錐形状となるように塗布するバンプ塗布工程と、
前記バンプの先端を前記回路パターンに向けて押し付け、前記バンプの中間部分に窪み部を形成して接合するバンプ接合工程と、を実施することを特徴とする半導体モジュールの製造方法。 - 前記バンプ塗布工程の前に、前記半導体素子の上方を覆う平板部と、前記平板部の両端から前記回路パターンに向かって突出する一対の突出部と、を有するブロック電極に前記半導体素子を配置するチップ配置工程を実施し、
前記チップ配置工程において、前記平板部の下面にコレクタ電極を向けて前記半導体素子を配置し、
前記バンプ接合工程において、前記一対の突出部を前記回路パターンに接合することを特徴とする請求項12に記載の半導体モジュールの製造方法。 - 前記バンプ塗布工程において、前記バンプは前記一対の突出部の端面よりも先端が突出するように塗布されることを特徴とする請求項13に記載の半導体モジュールの製造方法。
- 前記バンプ接合工程において、前記バンプの先端を前記回路パターンに向けて押し付けて前記バンプの中間部分に窪み部を形成した後、前記バンプを加熱して硬化させることを特徴とする請求項13又は請求項14に記載の半導体モジュールの製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020017650A JP7490974B2 (ja) | 2020-02-05 | 2020-02-05 | 半導体モジュール及び半導体モジュールの製造方法 |
US17/139,065 US11705419B2 (en) | 2020-02-05 | 2020-12-31 | Packaging structure for bipolar transistor with constricted bumps |
DE102021200017.7A DE102021200017A1 (de) | 2020-02-05 | 2021-01-05 | Halbleitermodul und verfahren zum herstellen eines halbleitermoduls |
CN202110012028.7A CN113224022A (zh) | 2020-02-05 | 2021-01-06 | 半导体模块和半导体模块的制造方法 |
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JP2006073664A (ja) * | 2004-08-31 | 2006-03-16 | Toshiba Corp | 半導体モジュール |
JP2006165240A (ja) * | 2004-12-07 | 2006-06-22 | Matsushita Electric Ind Co Ltd | 電子部品接続用突起電極およびその製造方法 |
JP2008218474A (ja) * | 2007-02-28 | 2008-09-18 | Shinkawa Ltd | ボンディング装置及び方法 |
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