JP2015130456A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP2015130456A JP2015130456A JP2014002130A JP2014002130A JP2015130456A JP 2015130456 A JP2015130456 A JP 2015130456A JP 2014002130 A JP2014002130 A JP 2014002130A JP 2014002130 A JP2014002130 A JP 2014002130A JP 2015130456 A JP2015130456 A JP 2015130456A
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- Japan
- Prior art keywords
- semiconductor device
- semiconductor element
- main terminal
- sealing resin
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- H01L2224/06—Structure, shape, material or disposition of the bonding areas prior to the connecting process of a plurality of bonding areas
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Abstract
【解決手段】絶縁基板の片面に表面電極が、および絶縁基板の他の面に裏面電極が、それぞれ形成された半導体素子基板と、表面電極の絶縁基板とは反対側の面に接合材を介して固着された半導体素子と、表面電極に接合された第1の主端子および半導体素子の表面電極とは反対側の面に接合された第2の主端子と、少なくとも半導体素子を内側に含むように設けられ、電気信号の入出力を行うための信号端子が一体成型されたケースと、ケースの内部を、少なくとも半導体素子を覆うように封止する封止樹脂とを備えた半導体装置において、第1の主端子および第2の主端子は封止樹脂を貫通して封止樹脂の外部に露出するとともに、信号端子の材料が第1の主端子および第2の主端子の材料と異なるようにした。
【選択図】図1
Description
電極とは反対側の面に接合された第2の主端子と、少なくとも半導体素子を内側に含むように設けられ、電気信号の入出力を行うための信号端子が一体成型されたケースと、ケースの内部を、少なくとも半導体素子を覆うように封止する封止樹脂とを備えた半導体装置において、第1の主端子および第2の主端子は封止樹脂を貫通して封止樹脂の外部に露出するとともに、信号端子の材料が第1の主端子および第2の主端子の材料と異なるようにしたものである。
図1は、本発明の実施の形態1による半導体装置の構成を示す側面断面図である。図1において、セラミックスなどの絶縁基板3aの片面には、パターンを有さない単一の表面電極3bが形成され、他の面には、やはりパターンを有さない単一の裏面電極3cが形成されている。表面電極3bおよび裏面電極3cは銅などの導電性材料の薄板である。表面電極3bおよび裏面電極3cが形成された絶縁基板3aを、ここでは半導体素子基板3と称する。半導体素子基板3の表面電極3bの絶縁基板3aとは反対側の所定の位置に、半導体素子1a、1bが導電性の接合材2を用いて固定され、半導体素子1aの一方の主電極と半導体素子1bの一方の主電極が電気的に接続される。ここで、半導体素子1aは例えばIGBT(Insulated Gate Bipolar Transistor)やMOSFET(Metal Oxide Semiconductor Field-Effect-Transistor)のようなスイッチング素子である。半導体素子1bは例えばスイッチング素子と並列に接続される還流ダイオードである。
1bが制御する電力用の電流を、半導体素子1aや1bに流すための端子である。
図4に、本発明の実施の形態2による半導体装置の構成を示す。図4に示す半導体装置の構成は、図1の半導体装置と概ね同じであるが、表面電極31bにパターンが形成されており、半導体素子1a、1bの上面の主電極は、ボンディングワイヤ70を介して第2の主端子5cが固定された表面電極31bに形成されたパターン32と電気的に接続している。これ以外の構成は、図1の構成と同じである。
図5は、この発明の実施の形態3による半導体装置の構成を示す側面断面図である、本実施の形態3による半導体装置は、図1に示した半導体装置を内部モジュール20として、内部モジュール20を複数放熱板10の一面に配置したものである。放熱板10の周辺部に設けた第2のケース12の内部を第2の封止樹脂13で封止する構造になっている。また、封止樹脂9を貫通して封止樹脂9の外部に取り出された主端子5は、第2の封止樹脂13も貫通して第2の封止樹脂13の外部に露出させる構成となっている。なお、図5では、図1に示した半導体装置を内部モジュールとして複数放熱板の一面に配置したものを示したが、実施の形態2の図4に示した半導体装置を内部モジュールとして複数放熱板の一面に配置しても良い。
図6は、本発明の実施の形態4による半導体装置の構成を示す側面断面図である。実施の形態4による半導体装置は、42アロイなど鉄およびニッケルを含む合金を用いた信号端子6と一体成型されたケース4が接着剤を介して放熱板10と接合されている。放熱板10は接合材11を介して半導体素子基板3の裏面電極3cと接合している。また、ケース4の内部は封止樹脂9で封止されている。さらに、実施の形態1と同様、表面電極3bにはパターンが形成されておらず、表面電極3bと裏面電極3cとは絶縁基板3aに対して対称に設けられている。表面電極3bに接続された第1の主端子5aは封止樹脂9を貫通して封止樹脂9の外部に露出している。また、半導体素子1a、1bの表面電極3bと反対側の面の主電極に接続された第2の主端子5bも封止樹脂9を貫通して封止樹脂9の外部に露出している。
図7は、本発明の実施の形態5による半導体装置の構成を示す側面断面図である。実施の形態5による半導体装置は、表面電極33bと放熱板10とが絶縁シート14を介して接合されている。
図6に示した実施の形態4の構造の半導体装置を作製し、ヒートサイクル信頼性試験に投入した。信号端子6に本発明の材料の一例として42アロイを用いたものと、比較例として銅にニッケルメッキを施したものを、放熱板10の材料として、銅、アルミニウム、Al−SiCを用いたものを作製し試験対象とした。
Claims (6)
- 絶縁基板の片面に表面電極が、および前記絶縁基板の他の面に裏面電極が、それぞれ形成された半導体素子基板と、
前記表面電極の、前記絶縁基板とは反対側の面に接合材を介して固着された半導体素子と、
前記表面電極に接合された第1の主端子および前記半導体素子の前記表面電極とは反対側の面に接合された第2の主端子と、
少なくとも前記半導体素子を内側に含むように設けられ、電気信号の入出力を行うための信号端子が一体成型されたケースと、
前記ケースの内部を、少なくとも前記半導体素子を覆うように封止する封止樹脂とを備えた半導体装置において、
前記第1の主端子および前記第2の主端子は前記封止樹脂を貫通して前記封止樹脂の外部に露出するとともに、
前記信号端子の材料が前記第1の主端子および前記第2の主端子の材料と異なる材料であることを特徴とする半導体装置。 - 前記信号端子の材料は、鉄およびニッケルを含む合金であることを特徴とする請求項1に記載の半導体装置。
- 前記信号端子の材料は、42アロイであることを特徴とする請求項2に記載の半導体装置。
- 前記ケースは前記表面電極の周辺部に設けられ、少なくとも前記ケース内部の前記表面電極は、前記絶縁基板全体を被覆し、かつ前記表面電極と前記裏面電極は、前記絶縁基板に対して対称に形成されていることを特徴とする請求項1から3のいずれか1項に記載の半導体装置。
- 前記半導体素子がワイドバンドギャップ半導体により形成されていることを特徴とする請求項1から4のいずれか1項に記載の半導体装置。
- 前記ワイドバンドギャップ半導体は、炭化ケイ素、窒化ガリウム系材料またはダイヤモンドの半導体であることを特徴とする請求項5に記載の半導体装置。
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JP2018011005A (ja) * | 2016-07-15 | 2018-01-18 | 三菱電機株式会社 | 半導体装置 |
JP2018046103A (ja) * | 2016-09-13 | 2018-03-22 | 三菱電機株式会社 | 半導体装置 |
JPWO2018180580A1 (ja) * | 2017-03-30 | 2019-04-04 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
KR20200001014A (ko) * | 2018-06-26 | 2020-01-06 | 엘지이노텍 주식회사 | 열전소자 |
JP2020150022A (ja) * | 2019-03-11 | 2020-09-17 | 富士電機株式会社 | 半導体装置 |
JP2021077661A (ja) * | 2019-11-05 | 2021-05-20 | 三菱電機株式会社 | 半導体パワーモジュール |
JP2021180260A (ja) * | 2020-05-14 | 2021-11-18 | 三菱電機株式会社 | 半導体装置 |
JP7570298B2 (ja) | 2021-07-26 | 2024-10-21 | 三菱電機株式会社 | 半導体装置 |
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JP2018011005A (ja) * | 2016-07-15 | 2018-01-18 | 三菱電機株式会社 | 半導体装置 |
JP2018046103A (ja) * | 2016-09-13 | 2018-03-22 | 三菱電機株式会社 | 半導体装置 |
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JP2021529431A (ja) * | 2018-06-26 | 2021-10-28 | エルジー イノテック カンパニー リミテッド | 熱電素子 |
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JP2020150022A (ja) * | 2019-03-11 | 2020-09-17 | 富士電機株式会社 | 半導体装置 |
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JP2021077661A (ja) * | 2019-11-05 | 2021-05-20 | 三菱電機株式会社 | 半導体パワーモジュール |
JP2021180260A (ja) * | 2020-05-14 | 2021-11-18 | 三菱電機株式会社 | 半導体装置 |
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JP7570298B2 (ja) | 2021-07-26 | 2024-10-21 | 三菱電機株式会社 | 半導体装置 |
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