JP5925052B2 - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000011347 resin Substances 0.000 claims description 54
- 229920005989 resin Polymers 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 19
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 229920002725 thermoplastic elastomer Polymers 0.000 description 6
- 230000035882 stress Effects 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- 239000000758 substrate Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-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
- 238000013459 approach Methods 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
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- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
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- H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L2224/36—Structure, shape, material or disposition of the strap connectors prior to the connecting process
- H01L2224/37—Structure, shape, material or disposition of the strap connectors prior to the connecting process of an individual strap connector
- H01L2224/3754—Coating
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- H01L2224/376—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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- H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L2224/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L2224/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
- H01L2224/401—Disposition
- H01L2224/40135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/40137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
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- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
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- H01L2224/84—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a strap connector
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- H01L2224/84—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a strap connector
- H01L2224/848—Bonding techniques
- H01L2224/8485—Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
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- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/36—Structure, shape, material or disposition of the strap connectors prior to the connecting process
- H01L24/37—Structure, shape, material or disposition of the strap connectors prior to the connecting process of an individual strap connector
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- H01L2924/13—Discrete devices, e.g. 3 terminal devices
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- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
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- H01L2924/151—Die mounting substrate
- H01L2924/156—Material
- H01L2924/15786—Material with a principal constituent of the material being a non metallic, non metalloid inorganic material
- H01L2924/15787—Ceramics, e.g. crystalline carbides, nitrides or oxides
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
図1は、本発明の実施の形態1による半導体装置の要部を示す断面図である。半導体装置10は、半導体モールドモジュール7と冷却器8から構成されている。2個の冷却器8には冷媒が循環するように、入り口と出口が設けられている。モールド樹脂6は、半導体素子1、放熱板2、端子4、制御端子5などを被覆し、高熱伝導性と絶縁性を備えた熱可塑性エラストマーからなる。半導体モールドモジュール7は半導体素子1に接合された放熱板2の下面までモールド樹脂6により覆われている。端子4は、平角状の金属からなる。制御端子5は、平角線の金属からなる。
図5は、本発明の実施の形態2による半導体装置を示す断面図である。実施の形態2では、熱可塑性エラストマーによってモールドされた半導体モールドモジュール7において、放熱板2の半導体素子1が実装されている面と対の面を露出させる。半導体モールドモジュール7の放熱板2が露出した面には接着性と放熱性を備えた絶縁性シート9を介してアルミなどの金属製の冷却器8が取り付けられる。
は平坦であることが、圧力の均一性を高めるために好ましい。
図6は、本発明の実施の形態3による半導体装置を示す断面図である。実施の形態3では、放熱板2に異なる2種類以上の金属板を張り合わせたクラッド材を用いる。図に示されたクラッド材12は銅とアルミからなる放熱板を示している。一般的に、冷却器8はアルミからなる場合が多く、放熱板2は銅やセラミックである場合が多い。そのため、放熱板2の下の絶縁性シート9、接合材3もしくはモールド樹脂6は、放熱板2と冷却器8の素材の線膨張差の違いにより剥離や破壊することが想定される。
実施の形態4にかかわる半導体装置では、冷却器同士の平行度を保つために冷却器の間にスペーサを設ける。図7には、半導体装置が複数組の半導体モールドモジュールを備えている場合を示している。金属や樹脂で作成されたスペーサ11は冷却器8の両端および半導体モールドモジュール7の間に設けられている。冷却器8は必ずしも平坦でなければいけないわけではなく、突起などが存在してもかわない。図8は、融着される前の、複数の半導体モールドモジュール7とスペーサ11の関係を表している。
実施の形態5にかかわる半導体装置の構造を図9に示す。実施の形態1〜4では、一層のみの半導体モールドモジュールを備えた半導体装置を描いているが、半導体モールドモジュールを多層に配設することも可能である。図9では、半導体モールドモジュール7が3段にわたって、冷却器を挟んで、層状に積み上げられている。この場合、両面から冷却できる冷却器8を用いて、前述した冷却器8に加熱した流体を流すことで冷却器8を加熱する方法を用いれば、同時に多層の組立てが可能となり生産性が良い。
Claims (4)
- 冷媒が循環する第1の冷却器と、
前記第1の冷却器と間隔を隔てて対向配置された放熱板と、
前記放熱板に接合されている半導体素子と、
前記放熱板と前記半導体素子を囲繞し、前記第1の冷却器に当接する熱可塑性のモールド樹脂と、
冷媒が循環し、前記モールド樹脂に当接する第2の冷却器と、
前記第1の冷却器と前記第2の冷却器を連絡する複数のスペーサとを備えている半導体装置。 - 冷媒が循環する第1の冷却器と、
前記第1の冷却器の片側を被覆する絶縁性シートと、
前記絶縁性シートに当接する放熱板と、
前記放熱板に接合されている半導体素子と、
前記放熱板と前記半導体素子を囲繞し、前記絶縁性シートに当接する熱可塑性のモールド樹脂と、
冷媒が循環し、前記モールド樹脂に当接する第2の冷却器と、
前記第1の冷却器と前記第2の冷却器を連絡する複数のスペーサとを備えている半導体装置。 - 前記放熱板は、クラッド材からなることを特徴とする請求項1または2に記載の半導体装置。
- 放熱板が半導体素子に接合されてなる半導体モジュールを熱可塑性の樹脂でモールドする工程と、
前記樹脂でモールドされた半導体モジュールを、前記樹脂の融点まで昇温する工程と、
前記樹脂でモールドされていて、しかも樹脂の融点まで昇温されている半導体モジュールを第1の冷却器および第2の冷却器で挟み、この半導体モジュールを前記第1の冷却器および前記第2の冷却器と融着する工程と、を備えている半導体装置の製造方法。
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JPS5967944U (ja) * | 1982-10-27 | 1984-05-08 | 日本電気ホームエレクトロニクス株式会社 | 樹脂封止型半導体装置 |
JP3740116B2 (ja) * | 2002-11-11 | 2006-02-01 | 三菱電機株式会社 | モールド樹脂封止型パワー半導体装置及びその製造方法 |
JP3978424B2 (ja) * | 2003-12-10 | 2007-09-19 | トヨタ自動車株式会社 | 半導体モジュール、半導体装置および負荷駆動装置 |
JP2006294921A (ja) * | 2005-04-12 | 2006-10-26 | Denso Corp | 電力変換装置 |
KR20080031446A (ko) * | 2005-08-31 | 2008-04-08 | 산요덴키가부시키가이샤 | 회로 장치 및 그 제조 방법 |
JP2009088335A (ja) * | 2007-10-01 | 2009-04-23 | Sumitomo Electric Fine Polymer Inc | 金属−樹脂複合体、並びに素子搭載用パッケージ及び電子装置 |
JP2010073965A (ja) * | 2008-09-19 | 2010-04-02 | Denso Corp | 半導体冷却ユニット |
JP5267238B2 (ja) * | 2009-03-13 | 2013-08-21 | トヨタ自動車株式会社 | 半導体装置及び半導体装置の製造方法 |
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