JP5017303B2 - 半導体装置 - Google Patents
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- JP5017303B2 JP5017303B2 JP2009073232A JP2009073232A JP5017303B2 JP 5017303 B2 JP5017303 B2 JP 5017303B2 JP 2009073232 A JP2009073232 A JP 2009073232A JP 2009073232 A JP2009073232 A JP 2009073232A JP 5017303 B2 JP5017303 B2 JP 5017303B2
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- 239000004065 semiconductor Substances 0.000 title claims description 127
- 239000000758 substrate Substances 0.000 claims description 43
- 238000009792 diffusion process Methods 0.000 claims description 38
- 230000005484 gravity Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 150000004767 nitrides Chemical group 0.000 claims description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 17
- 230000015556 catabolic process Effects 0.000 description 14
- 238000012986 modification Methods 0.000 description 12
- 230000004048 modification Effects 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
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- 238000010586 diagram Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 229910002704 AlGaN Inorganic materials 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Description
本発明の第1の実施の形態の半導体装置は、動作周波数fで動作可能な半導体装置であって、熱拡散率Dの基板と、基板上に形成され、第1の能動素子で構成される第1の素子ユニットと、基板上に第1の素子ユニットに隣接して形成され、第1の能動素子と異なるタイミングで動作する第2の能動素子で構成される第2の素子ユニットとを備えている。そして、第1の素子ユニットの重心と、第2の素子ユニットの重心との距離が熱拡散長(D/πf)1/2の2倍以下である。
図10は、本発明の第1の実施の形態の変形例の半導体装置の断面図である。本変形例の半導体装置110は、半導体装置100に対し、第1の電極16a、16bが2層で形成されていたものが1層で形成されている点と、第2の電極18が1層で形成されていたものが第2の電極18a、18bの2層で形成されている点と、トランジスタユニット12とダイオードユニット14の間に素子分離領域32が形成されている点が異なる。素子分離領域32は、イオン注入やトレンチなどにより形成することができる。
図12は、本発明の第2の実施の形態の半導体装置の上面図である。本実施の形態の半導体装置200は、電力変換用半導体装置である。半導体装置200は、同一基板上にトランジスタとダイオードが各々複数個あり、それぞれが分散されて配置されている。
図14は、本発明の第2の実施の形態の変形例の半導体装置の上面図である。本変形例の半導体装置210の、半導体装置200と異なる点は、トランジスタとダイオードが格子状に配置され、図の横方向にも縦方向にも、トランジスタユニット12とダイオードユニット14が交互に配置されている点である。このように、一方向でなく、複数の方向で交互に配置することにより、発熱源が一層分散され、さらに素子温度が効果的に抑制される。
図15は、本発明の第3の実施の形態の半導体装置の上面図である。本実施の形態の半導体装置300は、電力変換用半導体装置である。
12 トランジスタユニット
14 ダイオードユニット
16、16a、16b 第1の電極
18、18a、18b 第2の電極
20 制御電極
22 第1の共通電極
24 第2の共通電極
26 共通制御電極
30 半導体層
30a バッファー層
30b GaN層
30c AlGaN層
32 素子分離領域
36 配線
42 トランジスタユニット
44 ダイオードユニット
52 第1の共通電極
54 第2の共通電極
56 共通制御電極
100 半導体装置
110 半導体装置
200 半導体装置
210 半導体装置
300 半導体装置
Claims (10)
- 動作周波数fで動作可能な半導体装置であって、
熱拡散率Dの基板と、
前記基板上に形成され、ワイドギャップ半導体素子で横型素子のトランジスタで構成され、前記トランジスタのソース電極およびドレイン電極が同一の平面上に形成される第1の素子ユニットと、
前記基板上に前記第1の素子ユニットに隣接して形成され、前記トランジスタと異なるタイミングで動作するワイドギャップ半導体素子で横型素子のダイオードで構成され、前記ダイオードのアノード電極およびカソード電極が前記平面上に形成される第2の素子ユニットとを備え、
前記第1の素子ユニットの重心と、前記第2の素子ユニットの重心との距離が熱拡散長(D/πf)1/2の2倍以下であることを特徴とする半導体装置。 - 前記基板の裏面に放熱材が設置され、前記基板の厚さが前記熱拡散長以下であることを特徴とする請求項1記載の半導体装置。
- 前記トランジスタおよびダイオードが格子状に配置されることを特徴とする請求項1または請求項2いずれか一項記載の半導体装置。
- 前記トランジスタが動作状態にあるときは、前記ダイオードが必ず非動作状態になることを特徴とする請求項1ないし請求項3いずれか一項記載の半導体装置。
- 前記ワイドギャップ半導体素子が、窒化物半導体素子または炭化珪素素子であることを特徴とする請求項1ないし請求項4いずれか一項記載の半導体装置。
- 動作周波数fで動作可能な半導体装置であって、
熱拡散率Dの基板と、
前記基板上に形成され、ワイドギャップ半導体素子で横型素子のトランジスタで構成され、前記トランジスタのソース電極およびドレイン電極が同一の平面上に形成される第1の素子ユニットと、
前記基板上に前記第1の素子ユニットに隣接して形成され、前記トランジスタと異なるタイミングで動作するワイドギャップ半導体素子で横型素子のダイオードで構成され、前記ダイオードのアノード電極およびカソード電極が前記平面上に形成される第2の素子ユニットとを備え、
前記第1の素子ユニットと前記第2の素子ユニットとが一定の周期で配置され、前記周期の半分が熱拡散長(D/πf)1/2の2倍以下であることを特徴とする半導体装置。 - 前記基板の裏面に放熱材が設置され、前記基板の厚さが前記熱拡散長以下であることを特徴とする請求項6記載の半導体装置。
- 前記トランジスタおよびダイオードが格子状に配置されることを特徴とする請求項6または請求項7記載の半導体装置。
- 前記トランジスタが動作状態にあるときは、前記ダイオードが必ず非動作状態になることを特徴とする請求項6ないし請求項8いずれか一項記載の半導体装置。
- 前記ワイドギャップ半導体素子が、窒化物半導体素子または炭化ケイ素素子であることを特徴とする請求項6ないし請求項9いずれか一項記載の半導体装置。
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JP2009073232A JP5017303B2 (ja) | 2009-03-25 | 2009-03-25 | 半導体装置 |
US12/728,901 US9543286B2 (en) | 2009-03-25 | 2010-03-22 | Semiconductor device |
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JP2009073232A JP5017303B2 (ja) | 2009-03-25 | 2009-03-25 | 半導体装置 |
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JP5343100B2 (ja) | 2011-03-17 | 2013-11-13 | 株式会社東芝 | 窒化物半導体装置 |
JP2013041976A (ja) * | 2011-08-15 | 2013-02-28 | Advanced Power Device Research Association | 窒化物系半導体装置 |
JP6012987B2 (ja) * | 2012-02-29 | 2016-10-25 | 株式会社東芝 | イメージセンサの製造方法 |
JP5659182B2 (ja) | 2012-03-23 | 2015-01-28 | 株式会社東芝 | 窒化物半導体素子 |
JP2014110311A (ja) * | 2012-11-30 | 2014-06-12 | Furukawa Electric Co Ltd:The | 半導体装置 |
JP6584783B2 (ja) | 2015-02-06 | 2019-10-02 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
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JP3237555B2 (ja) * | 1997-01-09 | 2001-12-10 | 富士電機株式会社 | 半導体装置 |
JP2000058821A (ja) * | 1998-08-10 | 2000-02-25 | Hitachi Ltd | 半導体装置 |
EP1177576A2 (de) * | 1999-03-31 | 2002-02-06 | SiCED Electronics Development GmbH & Co KG | Integrierte halbleitervorrichtung mit einem lateralen leistungselement |
JP4097417B2 (ja) * | 2001-10-26 | 2008-06-11 | 株式会社ルネサステクノロジ | 半導体装置 |
JP2003153597A (ja) * | 2001-11-14 | 2003-05-23 | Toyota Motor Corp | 電源装置 |
US7259984B2 (en) * | 2002-11-26 | 2007-08-21 | Cornell Research Foundation, Inc. | Multibit metal nanocrystal memories and fabrication |
JP2005191530A (ja) * | 2003-12-03 | 2005-07-14 | Sumitomo Electric Ind Ltd | 発光装置 |
CN1961412B (zh) * | 2004-03-30 | 2010-05-26 | 日本电气株式会社 | 半导体器件 |
JP4961686B2 (ja) * | 2005-06-03 | 2012-06-27 | 株式会社デンソー | 半導体装置 |
JP2007027440A (ja) | 2005-07-15 | 2007-02-01 | National Institute Of Advanced Industrial & Technology | 半導体装置 |
JP5025128B2 (ja) * | 2005-12-22 | 2012-09-12 | 株式会社ジャパンディスプレイセントラル | 薄膜トランジスタ回路 |
JP5065595B2 (ja) * | 2005-12-28 | 2012-11-07 | 株式会社東芝 | 窒化物系半導体装置 |
JP4997854B2 (ja) * | 2006-07-14 | 2012-08-08 | 株式会社デンソー | 半導体装置 |
JP2008182122A (ja) | 2007-01-25 | 2008-08-07 | Sanyo Electric Co Ltd | 半導体装置 |
DE102007006853B4 (de) * | 2007-02-12 | 2018-05-09 | Infineon Technologies Ag | ESD-Schutzvorrichtung und elektrische Schaltung mit derselben |
JP2009032968A (ja) * | 2007-07-27 | 2009-02-12 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2009033036A (ja) * | 2007-07-30 | 2009-02-12 | Hitachi Ltd | 半導体装置及びこれを用いた電気回路装置 |
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2009
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