JP6303623B2 - 半導体装置、半導体装置の製造方法、位置決め治具 - Google Patents
半導体装置、半導体装置の製造方法、位置決め治具 Download PDFInfo
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- JP6303623B2 JP6303623B2 JP2014044683A JP2014044683A JP6303623B2 JP 6303623 B2 JP6303623 B2 JP 6303623B2 JP 2014044683 A JP2014044683 A JP 2014044683A JP 2014044683 A JP2014044683 A JP 2014044683A JP 6303623 B2 JP6303623 B2 JP 6303623B2
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- 239000004065 semiconductor Substances 0.000 title claims description 204
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 239000000758 substrate Substances 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 91
- 229910010271 silicon carbide Inorganic materials 0.000 description 91
- 239000000463 material Substances 0.000 description 36
- 229910000679 solder Inorganic materials 0.000 description 36
- 238000010586 diagram Methods 0.000 description 18
- 238000005476 soldering Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Description
また、本発明の前記半導体装置において、前記第1半導体チップと前記第2半導体チップの対向する辺の間隔が0.5mm以上、2mm以下であることが望ましい。
また、本発明の前記半導体装置において、前記端子が、銅、銅合金、アルミニウム、またはアルミニウム合金のいずれかで作られたリードフレームであることが望ましい。
また、本発明の前記半導体装置において、前記第1接合材および前記第2接合材が、はんだ又はろう材であることが望ましい。
また、本発明の半導体装置を製造する方法は、導電パターンを持った絶縁基板と、前記導電パターンに第1接合材を介して接続された矩形の第1半導体チップと、前記導電パターン上で前記第1半導体チップと離間して配置され、前記導電パターンに第2接合材を介して接続された矩形の第2半導体チップと、前記第1半導体チップおよび前記第2半導体チップの上方に配置され、第3接合材を介して前記第1半導体チップに接続され、かつ第4接合材を介して前記第2半導体チップに接続された端子と、を備え、該端子は、前記第1半導体チップと前記第2半導体チップとの間の上方に貫通孔を有する半導体装置を製造する方法において、前記第1半導体チップを少なくとも3か所で位置決めし、前記第2半導体チップを少なくとも3か所で位置決めし、前記位置決め箇所の内、少なくとも1箇所は、前記貫通孔に挿入された位置決め部材で位置決めされる位置決め工程を備える。
このような構成によれば、半導体チップの位置決め精度を向上できる。
また、本発明の半導体装置を製造する方法において、前記第1半導体チップの一角を形成する2辺と、前記第1半導体チップとは対向しない側の前記第2半導体チップの一角を形成する2辺と、前記第1半導体チップの前記一角の対角と、前記第2半導体チップの前記一角の対角と、を位置決めする、位置決め工程を備えることにしてもよい。
このような構成によれば、第1半導体チップおよび第2半導体チップは、それぞれ2辺と1つの角で位置決めされるので、半導体チップを固定することができる。
また、別の本発明の半導体装置を製造する方法において、前記第1半導体チップの前記第2半導体チップと対向する辺の両端にある2つの角と、複数の前記角と直接接しない前記第1半導体チップの辺と、前記第2半導体チップの前記第1半導体チップと対向する辺の両端にある2つの角と、複数の前記角と直接接しない前記第2半導体チップの辺と、を位置決めする、位置決め工程を備えることにしてもよい。
このような構成によれば、第1半導体チップおよび第2半導体チップは、それぞれ1辺と2つの角で位置決めされるので、半導体チップを固定することができる。
また、本発明の前記半導体装置を製造する方法において、前記導電パターン上に前記第1接合材、前記第1半導体チップ、前記第3接合材を順に重ねて配置し、前記導電パターン上に前記第2接合材、前記第2半導体チップ、前記第4接合材を順に重ねて配置する第1工程と、前記第3接合材および前記第4接合材の上に前記端子を配置する第2工程と、前記位置決め工程と、上記で組み立てられた半導体装置をリフロー処理する工程と、を順に実施する半導体装置の製造方法であって、前記位置決め工程は、前記端子の貫通孔に位置決め部材を挿入して、前記端子に対する前記第1半導体チップおよび前記第2半導体チップの相対的な位置を決めることにしてもよい。
また、本発明の位置決め治具は、基板上に矩形の第1半導体チップと第2半導体チップとを離間して備えた半導体装置の製造に用いられる位置決め治具において、前記第1半導体チップおよび前記第2半導体チップを挿入可能な貫通部を備え、前記第1半導体チップと前記第2半導体チップとの間の領域の少なくとも一部に空間を形成された第1位置決め部材と、前記第1位置決め部材上に配置され、前記第1半導体チップと前記第2半導体チップの間の上方の箇所に貫通孔を備えかつ前記空間の幅より幅が狭い端子を、前記第1半導体チップおよび前記第2半導体チップの上にまたがるように位置決めする第2位置決め部材と、前記貫通孔を通って、前記第1位置決め部材の前記空間に挿入される第3位置決め部材と、を備える。
また、本発明の上記位置決め治具において、前記第1位置決め部材、前記第2位置決め部材、および前記第3位置決め部材の材質が、カーボンであることが望ましい。
また、図6では、半導体チップ10a〜10dの角と対向する第1位置決め部材7の内側の角は、直角に形成されているが、第1位置決め部材7の内側の角を直角に加工することが難しい場合は、この部分をドリルで削っておくことがより望ましい。半導体チップ10a〜10dの角と対向する第1位置決め部材7の内側の角とが接触しないので、第1位置決め部材7の内側の角の加工精度に影響されないようにでき、第1位置決め部材7の製造を容易にできる。
より具体的には、本発明の半導体装置の製造方法には、下記の2つの形態が含まれる。
第1の形態は、上記の本発明の位置決め工程において、前記第1半導体チップの一角を形成する2辺と、前記第1半導体チップとは対向しない側の前記第2半導体チップの一角を形成する2辺と、前記第1半導体チップの前記一角の対角と、前記第2半導体チップの前記一角の対角と、を位置決めする、位置決め工程を備えている。
図6は、第3位置決め部材21であるスティック21aを用いて、複数のSiCダイオードチップ10の位置決めを行なう様子を示した説明図である。
スティック21aの先端側面が角部D、H、K、Nを位置決めし、スティック21bの先端側面が角部M、Pを位置決めすることで、導電パターン付き絶縁基板3にSiCダイオードチップ10a、10bを高精度で位置決めしてはんだ付けすることができる。
2,16 凹部
3,53 導電パターン付き絶縁基板
3a,53a 絶縁板
3b,53b 導電膜
3c,53c 導電パターン
7 第1位置決め部材
8,61,71 第1開口部
9 はんだ板
10、10a,10b,10c,10d,52,81 SiCダイオードチップ
11,51 IGBTチップ
11a,56 ゲート電極パッド
11b,57 ボンディングワイヤ
11c,58 パッド電極
11d,51a エミッタ電極
11e 制御ピン
12 はんだ板
13,62,72 第2開口部
14,55,75 第2端子
14a 第2外部導出端子
15 第2位置決め部材
16a 凸部
17,73 第3開口部
18 第4開口部
19,54,74,92 第1端子
19a 第1外部導出端子
20 貫通孔
21a スティック
21 第3位置決め部材
22 リフロー炉
30 樹脂
52a アノード電極
70,90,100,600 位置決め治具
91 開口部
200 半導体装置
201,501 パワーセル
500 従来のパワー半導体モジュール
Claims (2)
- 基板上に矩形の第1半導体チップと第2半導体チップとを離間して備えた半導体装置の製造に用いられる位置決め治具において、
前記第1半導体チップおよび前記第2半導体チップを挿入可能な開口部を備え、前記第1半導体チップと前記第2半導体チップとの間の領域の少なくとも一部に貫通した空間を形成された第1位置決め部材と、
前記第1半導体チップおよび前記第2半導体チップを挿入可能な開口部を備え、前記第1半導体チップと前記第2半導体チップの間の上方の箇所に前記貫通した空間の幅より狭い幅の貫通孔を備えた端子を、前記第1半導体チップおよび前記第2半導体チップの上にまたがるように位置決めし、前記第1位置決め部材上に配置される第2位置決め部材と、
前記貫通孔を通って、前記貫通した空間に挿入され前記第1半導体チップと前記第2半導体チップを位置決めする第3位置決め部材と、
を備えることを特徴とした位置決め治具。 - 請求項1に記載の位置決め治具において、
前記第1位置決め部材、前記第2位置決め部材、および前記第3位置決め部材の材質が、カーボンであることを特徴とする位置決め治具。
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