JP7282048B2 - 電力用半導体装置およびその製造方法 - Google Patents
電力用半導体装置およびその製造方法 Download PDFInfo
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- JP7282048B2 JP7282048B2 JP2020021758A JP2020021758A JP7282048B2 JP 7282048 B2 JP7282048 B2 JP 7282048B2 JP 2020021758 A JP2020021758 A JP 2020021758A JP 2020021758 A JP2020021758 A JP 2020021758A JP 7282048 B2 JP7282048 B2 JP 7282048B2
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- 239000004065 semiconductor Substances 0.000 title claims description 85
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 28
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- 238000000034 method Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 description 45
- 238000010586 diagram Methods 0.000 description 13
- 238000009413 insulation Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/191—Disposition
- H01L2924/19101—Disposition of discrete passive components
- H01L2924/19107—Disposition of discrete passive components off-chip wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
- H01L2924/3512—Cracking
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Wire Bonding (AREA)
Description
図1は、第1の前提技術の電力用半導体装置100Aの構成を示している。図1(a)は、電力用半導体装置100Aの上面図であり、図1(b)は電力用半導体装置100Aの断面図である。
<B-1.概要>
図3は、実施の形態1の電力用半導体装置101の断面図である。電力用半導体装置101は、放熱板1の上面にワイヤボンディング8が形成されるという点で、第1の前提技術の電力用半導体装置100Aと異なる。
以下、図4から図10に沿って電力用半導体装置101の製造工程を説明する。図4から図10において、(a)は上面図であり、(b)は断面図である。
図11は、放熱板1の上面にワイヤボンディング8が形成された状態を示す斜視図である。ワイヤボンディング8は、放熱板1の上面の接合領域12内に、接合領域12の外周の各辺に沿って形成される。
実施の形態1の電力用半導体装置101は、放熱板1と、放熱板1の上面の接合領域12に、凝固点の異なる複数の元素を含有する接合材であるはんだ2によって接合される絶縁基板3と、絶縁基板3の上面に搭載される半導体素子5と、放熱板1の上面の接合領域12に、平面視において半導体素子5を囲むようにボンディングされた金属ワイヤであるボンディングワイヤ8wと、を備える。従って、放熱板1およびボンディングワイヤ8wと接触したはんだ2に生じる界面張力が、ヒケス7を伸長させるはんだ2の収縮力と反対方向の力となり、ヒケス7の伸長を抑制する。これにより、半導体素子5の直下にヒケス7が伸長することが抑制され、半導体素子5の上面においてワイヤボンディング6を適切に形成することができる。また、絶縁基板3にディンプルが形成されないため、半導体素子のレイアウトの自由度または絶縁性能が阻害されない。
Claims (4)
- 放熱板と、
前記放熱板の上面の接合領域に、凝固点の異なる複数の元素を含有する接合材によって接合される絶縁基板と、
前記絶縁基板の上面に搭載される半導体素子と、
前記放熱板の上面の前記接合領域に、平面視において前記半導体素子を囲むように前記接合領域の外周の全辺に沿ってボンディングされた金属ワイヤと、を備える、
電力用半導体装置。 - 前記金属ワイヤのボンディング間隔は1.0mm以上であり、
前記金属ワイヤのループの高さは0.1mm以上である、
請求項1に記載の電力用半導体装置。 - 前記金属ワイヤは、CuまたはAgを主成分とし、
前記接合材は、Snを主成分とする、
請求項1または請求項2に記載の電力用半導体装置。 - 放熱板の上面に金属ワイヤをボンディングし、
前記放熱板の上面に、凝固点の異なる複数の元素を含有する接合材によって絶縁基板を接合し、
前記絶縁基板の上面に搭載される半導体素子を搭載する、
電力用半導体装置の製造方法であって、
前記金属ワイヤは、前記放熱板の上面の前記絶縁基板が接合される接合領域において、平面視において前記半導体素子を囲むように前記接合領域の外周の全辺に沿ってボンディングされる、
電力用半導体装置の製造方法。
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US17/077,854 US11387352B2 (en) | 2020-02-12 | 2020-10-22 | Power semiconductor device and manufacturing method thereof |
DE102021100177.3A DE102021100177A1 (de) | 2020-02-12 | 2021-01-08 | Leistungshalbleitervorrichtung und Herstellungsverfahren für diese |
CN202110178885.4A CN113257768A (zh) | 2020-02-12 | 2021-02-07 | 电力用半导体装置及其制造方法 |
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JP2013201289A (ja) | 2012-03-26 | 2013-10-03 | Mitsubishi Electric Corp | 半導体装置 |
JP2014146645A (ja) | 2013-01-28 | 2014-08-14 | Mitsubishi Electric Corp | 半導体装置 |
WO2018220819A1 (ja) | 2017-06-02 | 2018-12-06 | 三菱電機株式会社 | 半導体素子接合用基板、半導体装置および電力変換装置 |
JP2019110317A (ja) | 2016-06-14 | 2019-07-04 | 三菱電機株式会社 | 電力用半導体装置 |
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US8399972B2 (en) * | 2004-03-04 | 2013-03-19 | Skyworks Solutions, Inc. | Overmolded semiconductor package with a wirebond cage for EMI shielding |
US9147665B2 (en) * | 2007-11-06 | 2015-09-29 | Fairchild Semiconductor Corporation | High bond line thickness for semiconductor devices |
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JP2014146644A (ja) * | 2013-01-28 | 2014-08-14 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
US10021790B2 (en) * | 2016-02-26 | 2018-07-10 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Module with internal wire fence shielding |
US10134686B2 (en) * | 2016-09-30 | 2018-11-20 | Avago Technologies International Sales Pte. Limited | Systems and methods for providing electromagnetic interference (EMI) compartment shielding for components disposed inside of system electronic packages |
JP2018137305A (ja) * | 2017-02-21 | 2018-08-30 | 富士通コンポーネント株式会社 | 電子装置及び電子装置の製造方法 |
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JP2013201289A (ja) | 2012-03-26 | 2013-10-03 | Mitsubishi Electric Corp | 半導体装置 |
JP2014146645A (ja) | 2013-01-28 | 2014-08-14 | Mitsubishi Electric Corp | 半導体装置 |
JP2019110317A (ja) | 2016-06-14 | 2019-07-04 | 三菱電機株式会社 | 電力用半導体装置 |
WO2018220819A1 (ja) | 2017-06-02 | 2018-12-06 | 三菱電機株式会社 | 半導体素子接合用基板、半導体装置および電力変換装置 |
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