JP5720625B2 - 伝熱部材とその伝熱部材を備えるモジュール - Google Patents
伝熱部材とその伝熱部材を備えるモジュール Download PDFInfo
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- JP5720625B2 JP5720625B2 JP2012126705A JP2012126705A JP5720625B2 JP 5720625 B2 JP5720625 B2 JP 5720625B2 JP 2012126705 A JP2012126705 A JP 2012126705A JP 2012126705 A JP2012126705 A JP 2012126705A JP 5720625 B2 JP5720625 B2 JP 5720625B2
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- 239000004065 semiconductor Substances 0.000 claims description 93
- 229910052751 metal Inorganic materials 0.000 claims description 91
- 239000002184 metal Substances 0.000 claims description 91
- 239000000919 ceramic Substances 0.000 claims description 46
- 239000000758 substrate Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910020888 Sn-Cu Inorganic materials 0.000 description 1
- 229910019204 Sn—Cu Inorganic materials 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- H01L2224/29099—Material
- H01L2224/291—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
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Description
(特徴1)本明細書で開示される伝熱部材は、半導体素子と電極板の間に設けられる。半導体素子の半導体材料は特に限定されるものではない。一例では、半導体素子の材料には、シリコン系、炭化シリコン系、又は窒化ガリウム系が用いられてもよい。半導体素子の種類も特に限定されるものではない。一例では、半導体素子の種類には、MOSFET、IGBT、ダイオード、サイリスタ、HFET、又はHEMTが用いられてもよい。また、半導体素子は、縦型であってもよく、横型であってもよい。電極板は、半導体素子を流れる電流が入力又は出力するための導体部材である。一例では、電極板は、縦型の半導体素子の表面電極に電気的に接続される導体部材であってもよく、縦型の半導体素子の裏面電極に電気的に接続される導体部材であってもよい。
(特徴2)本明細書で開示される伝熱部材は、半導体素子側の第1面と電極板側の第2面の間を伸びている金属部、及び金属部を取り囲むセラミック部を備えていてもよい。金属部の材料は特に限定されるものではない。金属部の材料は、電気抵抗値が小さく、比熱が小さく、熱伝導率が大きい材料が望ましい。一例では、金属部の材料には、銅、アルミニウム、金、又は銀が用いられてもよい。セラミック部の材料も特に限定されるものではない。セラミック部の材料は、金属部の材料よりもヤング率が高い(120MPa以上)のが望ましく、また、金属部の材料よりも線膨張係数が小さい(10ppm/K以下)のが望ましい。一例では、セラミック部の材料には、窒化アルミニウム(AlN)、窒化シリコン(Si3N4)、アルミナ(Al2O3)、又はジルコニア(ZrO3)が用いられてもよい。
(特徴3)金属部では、第1面の面積が第2面の面積よりも小さくてもよい。
(特徴4)金属部には、第1面と第2面に平行な断面の面積が、第1値の第1部分と第2値の第2部分が存在してもよい。第1値が第2値よりも小さい。この場合、第1部分が第1面側に位置しており、第2部分が第2面側に位置していてもよい。
(特徴5)金属部では、第1面と第2面に平行な断面の面積が、第1面から第2面に向けて徐々に大きくなるように構成されていてもよい。
(特徴6)金属部が電極板と一体成形されていてもよい。この態様によると、伝熱部材と電極板の間に接合面が存在しないので、この間における熱歪みの集中が緩和される。なお、金属部と電極板が一体成形されている場合、本明細書の第2面とは、金属部と観念できる部分と電極板と観念できる部分の間で切断したときの切断面をいう。
(特徴7)第1面の金属部が半導体素子の素子領域上に位置していてもよい。ここで、半導体素子の素子領域とは、ゲート構造が形成されている領域である。この態様によると、半導体素子で発生した熱が効率的に金属部を介して放熱される。さらに、第1面のセラミック部が半導体素子の終端領域上に位置していてもよい。ここで、半導体素子の終端領域とは、素子領域の周囲に設けられており、ゲート構造が形成されていない領域である。例えば、半導体素子の終端領域には、耐圧向上用のガードリング、リサーフ層等が形成されている。この態様によると、金属部と半導体素子の終端領域の間の容量カップリングが抑えられ、半導体素子の終端領域の耐圧低下が抑えられる。
(1)パワーモジュール1では、伝熱部材40の金属部42と電極板50が一体成形されている。このため、伝熱部材40の金属部42と電極板50の間に接合面が存在しないので、この間における熱歪みの集中が抑制される。
10:冷却器
20:絶縁基板
30:半導体素子
40:伝熱部材
40A:第1面
40B:第2面
42:金属部
44:セラミック部
50:電極板
Claims (3)
- 半導体素子と電極板の間に設けられる伝熱部材であって、
前記半導体素子側の第1面と前記電極板側の第2面の間を伸びている金属部と、
前記金属部を取り囲むセラミック部と、を備えており、
前記金属部では、前記第1面の面積が前記第2面の面積よりも小さく、
前記第1面の前記金属部が前記半導体素子の素子領域上に位置しており、
前記第1面の前記セラミック部が前記半導体素子の終端領域上に位置している伝熱部材。 - 前記金属部が、前記電極板と一体成形されている請求項1に記載の伝熱部材。
- 冷却器と、
前記冷却器上に設けられている絶縁基板と、
前記絶縁基板上に設けられている半導体素子と、
前記半導体素子上に設けられている伝熱部材と、
前記伝熱部材上に設けられている電極板と、を備えており、
前記伝熱部材は、
前記半導体素子側の第1面と前記電極板側の第2面の間を伸びている金属部と、
前記金属部を取り囲むセラミック部と、を有しており、
前記金属部では、前記第1面の面積が前記第2面の面積よりも小さく、
前記第1面の前記金属部が前記半導体素子の素子領域上に位置しており、
前記第1面の前記セラミック部が前記半導体素子の終端領域上に位置しているモジュール。
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JP2012126705A JP5720625B2 (ja) | 2012-06-04 | 2012-06-04 | 伝熱部材とその伝熱部材を備えるモジュール |
US13/906,930 US8933484B2 (en) | 2012-06-04 | 2013-05-31 | Heat transfer member and module with the same |
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JP2012126705A JP5720625B2 (ja) | 2012-06-04 | 2012-06-04 | 伝熱部材とその伝熱部材を備えるモジュール |
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JP2013251472A JP2013251472A (ja) | 2013-12-12 |
JP5720625B2 true JP5720625B2 (ja) | 2015-05-20 |
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FR2975528B1 (fr) * | 2011-05-17 | 2014-02-28 | Alstom Transport Sa | Dispositif d'isolation electrique d'un plan conducteur presentant un premier potentiel electrique par rapport a un deuxieme potentiel, comprenant des moyens de diminution de la valeur du champ electrostatique en un point du bord peripherique du plan conducteur |
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JP2002231850A (ja) * | 2001-01-30 | 2002-08-16 | Kyocera Corp | 半導体素子収納用配線基板 |
JP2004047598A (ja) * | 2002-07-10 | 2004-02-12 | Toyota Industries Corp | 複合材及び接続構造 |
JP3994945B2 (ja) * | 2003-08-26 | 2007-10-24 | 日産自動車株式会社 | 半導体装置および半導体装置の製造方法 |
EP1596434B1 (en) * | 2003-09-04 | 2018-12-05 | Panasonic Intellectual Property Management Co., Ltd. | Semiconductor device |
DE102004018476B4 (de) * | 2004-04-16 | 2009-06-18 | Infineon Technologies Ag | Leistungshalbleiteranordnung mit kontaktierender Folie und Anpressvorrichtung |
JP4613077B2 (ja) * | 2005-02-28 | 2011-01-12 | 株式会社オクテック | 半導体装置、電極用部材および電極用部材の製造方法 |
JP4967447B2 (ja) | 2006-05-17 | 2012-07-04 | 株式会社日立製作所 | パワー半導体モジュール |
US7605451B2 (en) * | 2006-06-27 | 2009-10-20 | Hvvi Semiconductors, Inc | RF power transistor having an encapsulated chip package |
JP5029139B2 (ja) * | 2006-12-05 | 2012-09-19 | 株式会社豊田自動織機 | 車載用半導体装置及び車載用半導体装置の製造方法 |
US8030760B2 (en) | 2006-12-05 | 2011-10-04 | Kabushiki Kaisha Toyota Jidoshokki | Semiconductor apparatus and manufacturing method thereof |
JP2008258547A (ja) | 2007-04-09 | 2008-10-23 | Fuji Electric Device Technology Co Ltd | 半導体装置およびその製造方法 |
JP5485833B2 (ja) * | 2010-09-01 | 2014-05-07 | 株式会社オクテック | 半導体装置、電極用部材および電極用部材の製造方法 |
JP2011109144A (ja) * | 2011-02-28 | 2011-06-02 | Renesas Electronics Corp | 半導体装置 |
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