JP6711001B2 - 半導体装置及び製造方法 - Google Patents
半導体装置及び製造方法 Download PDFInfo
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- JP6711001B2 JP6711001B2 JP2016027946A JP2016027946A JP6711001B2 JP 6711001 B2 JP6711001 B2 JP 6711001B2 JP 2016027946 A JP2016027946 A JP 2016027946A JP 2016027946 A JP2016027946 A JP 2016027946A JP 6711001 B2 JP6711001 B2 JP 6711001B2
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Description
特許文献1 特開2004−95670号公報
第2の製造方法に従って半導体装置100を製造した。なお、絶縁基板3として、絶縁板3aの厚さ1.0mm、金属層3b及び配線層3cの厚さ0.2mm、配線層3cの端部と絶縁板3aの端部との離間距離(額縁長)1.5mm、並びに金属層3bの端部と絶縁板3aの端部との離間距離(額縁長)0.5mmのデンカAlNプレート(Al回路AlN基板、電気化学工業製)を使用した。また、半導体素子11及び12として、Si半導体IGBT及びSiC半導体SBDを使用した。また、ベース基板1aとして、AlSiC基板(電気化学工業製)を使用した。
ステップS13を省略して樹脂層21及び22を形成しなかったことを除いて、実施例1と同様に製造した。
ステップS13において使用するポリイミドをCT4112A1(京セラケミカル製、ガラス転移温度170℃)に変更したことを除いて、実施例1と同様に製造した。
ステップS13において、半導体素子11及び12の表面の周縁にのみポリイミドを塗布してガードリング11c及び12bのみを樹脂層(第1樹脂層21a及び22aに相当する)により覆ったことを除いて、実施例1と同様に製造した。
ステップS13において、半導体素子11及び12の表面の中央にのみポリイミドを塗布してワイヤ15,16及び17の接合部のみを樹脂層により覆ったことを除いて、実施例1と同様に製造した。
樹脂層の膜厚を8μmとしたことを除いて、実施例1と同様に製造した。
実施例1及び比較例1〜4の半導体装置のそれぞれについて、印加試験装置(CS−5400、岩通製)を使用して150℃の温度下で逆バイアス3.3kVを印加する試験を行い、半導体装置において特に半導体素子12とゲル充填材23との界面で絶縁破壊が生じた台数(破壊台数と呼ぶ)を評価した。なお、この破壊台数は、半導体装置の絶縁耐量を表す。また、温度25℃と150℃とにおけるパワーサイクル評価(チップジャンクション温度は150℃)を行い、熱抵抗の変化率が20%を超えたパワーサイクル数(パワーサイクル耐量と呼ぶ)を評価した。絶縁耐量が高く(すなわち、破壊台数が少なく)且つパワーサイクル耐量が高い(すなわち、パワーサイクル数が大きい)ほど高い信頼性を意味する。
Claims (15)
- 第1表面電極と第1ガードリングを有する第1半導体素子と、
第2表面電極と第2ガードリングを有する第2半導体素子と、
前記第1半導体素子及び前記第2半導体素子が併設される配線パターンを有する基板と、
前記第1表面電極に接合される第1ワイヤと、
前記第2表面電極に接合される第2ワイヤと、
前記第1及び第2ガードリングの少なくとも一方を覆う第1樹脂層と、
前記第1及び第2半導体素子、前記第1及び第2ワイヤ、および前記第1樹脂層を封止するゲル充填材と、
を備え、
前記第1樹脂層は、前記配線パターンの少なくとも一部を覆う半導体装置。 - 前記第1表面電極と前記第1ワイヤとの第1接合部と、前記第2表面電極と第2ワイヤとの第2接合部の少なくとも一方の前記接合部を覆う第2樹脂層と、
を更に備える請求項1に記載の半導体装置。 - 前記第2樹脂層は、前記第1樹脂層よりも厚みが大きい請求項2に記載の半導体装置。
- 前記樹脂層は、ポリイミドを含む請求項1から3のいずれか一項に記載の半導体装置。
- 前記ポリイミドは、ガラス転移温度が200℃以上である請求項4に記載の半導体装置。
- 前記第1樹脂層は、厚みが10μmから50μmである請求項1から5のいずれか一項に記載の半導体装置。
- 前記第2樹脂層は、厚みが10μmから50μmである請求項2または3に記載の半導体装置。
- 前記ゲル充填材は、シリコーンゲルを含む請求項1から7のいずれか一項に記載の半導体装置。
- 前記第1半導体素子は、SiC半導体素子であり、
前記第2半導体素子は、Si半導体素子又はSiC半導体素子である
請求項1から8のいずれか一項に記載の半導体装置。 - 内部空間に前記第1半導体素子、前記第2半導体素子、前記基板、前記第1ワイヤ、第2ワイヤ、および前記第1樹脂層が配設され、当該内部空間に前記ゲル充填材が充填されるケースを更に備える請求項1から8のいずれか一項に記載の半導体装置。
- 半導体装置の製造方法であって、
第1表面電極と第1ガードリングを有する第1半導体素子を基板の配線パターン上に実装する段階と、
前記第1ガードリングと、前記配線パターンの少なくとも一部とを覆う第1樹脂層を形成する段階と、
前記第1表面電極に第1ワイヤを接合する段階と、
前記第1表面電極と前記第1ワイヤの第1接合部を覆う第2樹脂層を形成する段階と、
前記第1半導体素子、前記第1ワイヤ、および前記第2樹脂層をゲル充填材により封止する段階と、
を備える製造方法。 - 前記第2樹脂層を形成する段階は、前記第2樹脂層を前記第1樹脂層よりも大きい厚みで形成する請求項11に記載の製造方法。
- 前記第1半導体素子の表面の縁部に位置する前記第1ガードリングを覆う、前記第2樹脂層と一体または別体の前記第1樹脂層を形成する段階を更に備える請求項11または12に記載の製造方法。
- 前記第1樹脂層を形成する段階は、前記第1半導体素子の第1表面電極に第1ワイヤを接合する前に前記第1樹脂層を形成する請求項13に記載の製造方法。
- 前記第1樹脂層を形成する段階は、インクジェット塗布装置によって前記第1ガードリングを覆う樹脂を塗布して前記第1樹脂層を形成し、
前記第2樹脂層を形成する段階は、ディスペンサ塗布装置によって前記第1半導体素子の表面における前記ワイヤの接合部を覆う樹脂を塗布して前記第2樹脂層を形成する
請求項13または14に記載の製造方法。
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JP5600698B2 (ja) * | 2012-03-14 | 2014-10-01 | 株式会社 日立パワーデバイス | SiC素子搭載パワー半導体モジュール |
US9804039B2 (en) * | 2012-04-27 | 2017-10-31 | Cameron International Corporation | System and method for position monitoring using ultrasonic sensor |
DE112014006759B4 (de) * | 2014-07-30 | 2019-02-21 | Hitachi, Ltd. | Halbleitervorrichtung, Verfahren zum Herstellen einer Halbleitervorrichtung und Leistungsumsetzungsvorrichtung |
KR102352237B1 (ko) * | 2014-10-23 | 2022-01-18 | 삼성전자주식회사 | 팬 아웃 웨이퍼 레벨 패키지의 제조 방법 및 그의 구조 |
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