JP2015506102A - 半導体モジュール及びその製造方法 - Google Patents
半導体モジュール及びその製造方法 Download PDFInfo
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- JP2015506102A JP2015506102A JP2014545966A JP2014545966A JP2015506102A JP 2015506102 A JP2015506102 A JP 2015506102A JP 2014545966 A JP2014545966 A JP 2014545966A JP 2014545966 A JP2014545966 A JP 2014545966A JP 2015506102 A JP2015506102 A JP 2015506102A
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Abstract
Description
Claims (66)
- コンデンサと、
第1のトランジスタを含む第1のスイッチングデバイス及び第2のトランジスタを含む第2のスイッチングデバイスと、
第1の金属層と第2の金属層との間の絶縁層を含む基板であって、前記第1の金属層が第1の部分及び第2の部分を含み、前記第2の部分が前記第1の部分と前記第2の部分との間の前記第1の金属層に形成されたトレンチによって、前記第1の部分から電気的に分離されている基板とを備え、
前記第1及び第2のスイッチングデバイスは、前記第1の金属層の上にあり、
前記コンデンサの第1の端子は、前記第1の金属層の第1の部分に電気的に接続され、前記コンデンサの第2の端子は、前記第1の金属層の第2の部分に電気的に接続され、前記コンデンサは、前記トレンチ上を横断するように形成されている電子モジュール。 - 前記第1のトランジスタのドレインは、前記第2のトランジスタのソースに電気的に接続され、前記第1及び第2のトランジスタは、共に前記第1の金属層の第1の部分の上にある請求項1記載の電子モジュール。
- 前記第1の金属層の第1の部分は、前記第1の金属層の第1の部分をDCグラウンド又は第1のDC電圧に電気的に接続する手段を含み、前記第1の金属層の第2の部分は、前記第1の金属層の第2の部分を第2のDC電圧に電気的に接続する手段を含む請求項1記載の電子モジュール。
- 前記コンデンサは、前記第1の金属層の第1の部分と第2の部分との間の電位差を安定させるように構成されている請求項3記載の電子モジュール。
- 前記第1のトランジスタ又は前記第2のトランジスタは、III族窒化物トランジスタである請求項1記載の電子モジュール。
- 前記基板は、直接接合銅基板を含む請求項5記載の電子モジュール。
- 第3の金属層と第4の金属層との間に第2の絶縁層を含む第2の基板を更に備え、前記第2の基板は、前記第1の金属層の第3の部分の上にあるが、前記第1の金属層の第1及び第2の部分の上になく、前記第2の基板は、前記第2のトランジスタと、前記第1の基板との間にあり、前記第1のトランジスタは、前記第1の金属層の第1又は第2の部分の上にある請求項1記載の電子モジュール。
- 第1の絶縁層の上に第1の部分及び第2の部分を含む第1の金属層を有する第1の基板と、
第2の金属層と第3の金属層との間に第2の絶縁層を有する第2の基板であって、第2の表面と、前記第2の表面に対して前記第2の基板の反対側にある第3の表面とを有し、前記第2の絶縁層は、前記第1の絶縁層より小さい面積を有する第2の基板と、
第1の半導体デバイスとを備え、
前記第2の基板は、前記第1の金属層の第2の部分の上に重ならないように前記第1の金属層の第1の部分の上に取り付けられ、前記第2の基板の第2の表面は、前記第1の金属層と直接的に接触し、
前記第1の半導体デバイスは、前記第2の基板の第3の表面に取り付けられている電子モジュール。 - 前記第1の基板及び前記第2の基板は、直接接合銅基板を含む請求項8記載の電子モジュール。
- 前記第1の金属層の第2の部分に取り付けられた第2の半導体デバイスを更に備える請求項8記載の電子モジュール。
- 前記第1の半導体デバイスは、第1のトランジスタを含み、前記第2の半導体デバイスは、第2のトランジスタを含み、前記第1のトランジスタのソース及び前記第2のトランジスタのドレインは、前記第3の金属層に電気的に接続されている請求項10記載の電子モジュール。
- 前記第1のトランジスタ又は前記第2のトランジスタは、III族窒化物トランジスタである請求項11記載の電子モジュール。
- 前記第1の金属層は、第3の部分を更に有し、前記第3の部分は、前記第3の部分と前記第2の部分との間で前記第1の金属層を介して形成されたトレンチによって、前記第2の部分から電気的に分離されている請求項11記載の電子モジュール。
- コンデンサを更に備え、前記コンデンサの第1の端子は、前記第1の金属層の第3の部分に電気的に接続され、前記コンデンサの第2の端子は、前記第1の金属層の第2の部分に電気的に接続され、前記コンデンサは、前記トレンチ上を横断するように形成されている請求項13記載の電子モジュール。
- 前記第1のトランジスタのドレインは、前記第1の金属層の第3の部分に電気的に接続されている請求項13記載の電子モジュール。
- 前記第1の半導体デバイスは、第3のトランジスタを更に有し、前記第3のトランジスタのソースは、前記第1のトランジスタのドレインに電気的に接続され、前記第1のトランジスタのドレインは、前記第1の金属層の第3の部分に電気的に接続されている請求項13記載の電子モジュール。
- 第4の金属層と第5の金属層との間の第3の絶縁層を有する第3の基板を更に備え、前記第3の絶縁層は、前記第2の絶縁層より小さい面積を有し、前記第3の基板は、前記第2の基板の第3の表面の上に直接的に取り付けられている請求項10記載の電子モジュール。
- 前記第1の半導体デバイスは、第1のトランジスタを含み、前記第2の半導体デバイスは、第2のトランジスタを含み、前記第1のトランジスタのソース及び前記第2のトランジスタのドレインは、前記第3の金属層に電気的に接続されている請求項17記載の電子モジュール。
- 前記第1の金属層は、第3の部分を更に有し、前記第3の部分は、前記第3の部分と前記第2の部分との間で前記第1の金属層を介して形成されたトレンチによって、前記第2の部分から電気的に分離されている請求項18記載の電子モジュール。
- コンデンサを更に備え、前記コンデンサの第1の端子は、前記第1の金属層の第3の部分に電気的に接続され、前記コンデンサの第2の端子は、前記第1の金属層の第2の部分に電気的に接続され、前記コンデンサは、前記トレンチ上を横断するように形成されている請求項19記載の電子モジュール。
- 前記第1のトランジスタのドレインは、前記第1の金属層の第3の部分に電気的に接続されている請求項19記載の電子モジュール。
- 前記第1の半導体デバイスは、第3のトランジスタを更に有し、前記第3のトランジスタのソースは、前記第1のトランジスタのドレインに電気的に接続され、前記第1のトランジスタのドレインは、前記第1の金属層の第3の部分に電気的に接続されている請求項19記載の電子モジュール。
- 前記第1及び第2の半導体デバイスは、トランジスタを含み、前記トランジスタは、ハーフブリッジの一部である請求項10記載の電子モジュール。
- 電子モジュールを製造する方法において、
第1の絶縁層の上に第1の金属層を有する第1の基板であって、第1の表面を有し、第1の部分及び第2の部分を含む第1の基板を準備するステップと、
第2の金属層と第3の金属層との間に第2の絶縁層を有する第2の基板であって、第2の表面と、前記第2の表面に対して前記第2の基板の反対側にある第3の表面とを有する第2の基板を準備するステップと、
前記第2の表面を前記第3の表面と前記第1の表面との間にして、前記第1の基板の第1の部分において、前記第1の表面の上に前記第2の基板を取り付けるステップと、
前記第2の基板の前記第3の表面に前記第1の半導体デバイスを取り付けるステップとを有する方法。 - 前記第1の基板の第2の部分において、前記第1の基板の前記第1の表面の上に前記第2の半導体デバイスを取り付けるステップを更に有する請求項24記載の方法。
- 前記第1の半導体デバイス又は前記第2の半導体デバイスは、トランジスタである請求項25記載の方法。
- 前記トランジスタは、ソース電極、ゲート電極及びドレイン電極を有し、前記電極のそれぞれは、前記トランジスタの第1の側にある請求項26記載の方法。
- 前記トランジスタは、III族窒化物トランジスタである請求項26記載の方法。
- 前記第1の半導体デバイス又は前記第2の半導体デバイスは、ハードスイッチング型として構成されたスイッチングトランジスタである請求項25記載の方法。
- 前記スイッチングトランジスタのスイッチング期間は、約3ナノ秒以下である請求項25記載の方法。
- 前記第1の半導体デバイスを前記第2の基板に取り付けるステップ又は前記第2の半導体デバイスを前記第1の基板に取り付けるステップは、前記第1の基板の第1の部分において、前記第1の表面の上に前記第2の基板を取り付けるステップの前に実行される請求項25記載の方法。
- 前記第2の基板の第2の表面は、前記第1の基板の第1の部分において、前記第1の基板の第1の表面に直接的に取り付けられる請求項24記載の方法。
- 前記第1の基板の第1の表面は、前記第1の金属層の表面を含み、前記第2の基板の第2の表面は、前記第2の金属層の表面を含み、前記第2の基板の第3の表面は、第3の金属層の表面を含む請求項24記載の方法。
- 前記第1の金属層を部分的に取り除くステップを更に有する請求項24記載の方法。
- 前記第1の金属層を部分的に取り除くステップは、前記第1の金属層を介して分離トレンチを形成するステップを含む請求項34記載の方法。
- 前記第1の金属層を部分的に取り除くステップは、前記第1の基板の第1の部分において、前記第2の基板を前記第1の表面の上に取り付ける前に実行される請求項34記載の方法。
- 前記第1の基板の第1の部分の上に前記第2の基板を取り付けるステップは、前記第2の基板の第2の表面を前記第1の基板の第1の表面の第1の部分にはんだ付けするステップを含む請求項24記載の方法。
- 前記第1の絶縁層又は前記第2の絶縁層は、セラミック材料を含む請求項24記載の方法。
- 前記第1、第2又は第3の金属層の1つ以上は、銅を含む請求項24記載の方法。
- 前記第1の基板又は前記第2の基板は、直接接合銅(direct bonded copper:DBC)基板である請求項24記載の方法。
- 前記第1の基板の第1の表面の面積は、前記第2の基板の第2の表面の面積より広い請求項24記載の方法。
- 前記電子モジュールは、ハーフブリッジを含む請求項24記載の方法。
- 前記電子モジュールは、パワーインバータ又はパワーコンバータを含む請求項24記載の方法。
- 前記電子モジュールの上に、第1の端子及び第2の端子を有するコンデンサを取り付けるステップを更に有する請求項24記載の方法。
- 前記第1の基板の第2の部分において、前記第1の金属層を介してトレンチを形成するステップを更に有し、前記コンデンサを前記電子モジュールに取り付けるステップは、前記トレンチの第1の側において、前記第1の端子を前記第1の金属層に接続するステップと、前記トレンチの第2の側において、前記第2の端子を前記第1の金属層に接続するステップとを含む請求項44記載の方法。
- 前記第1の基板は、前記第1の金属層に対して前記第1の絶縁層の反対側にある第4の金属層を更に備える請求項24記載の方法。
- 第1の金属層と第2の金属層との間の第1の絶縁層を含む第1の基板と、
第3の金属層と第4の金属層との間の第2の絶縁層を含む第2の基板であって、前記第1の基板より面積が小さく、前記第3の金属層を前記第2の金属層に隣接又は接触させて、前記第1の基板の第1の部分に取り付けられている第2の基板と、
第1のゲート及び第1のソースを有する第1のスイッチングデバイスと、
第2のゲート及び第2のソースを有する第2のスイッチングデバイスとを備え、
前記第1のスイッチングデバイスは、前記第1の基板の第2の金属層に取り付けられ、前記第2の基板は、前記第2のスイッチングデバイスと前記第1の基板との間にある電子モジュール。 - 前記第1のソースは、第1のソースリードに電気的に接続され、前記第1のゲートは、第1のゲートリードに電気的に接続され、前記第2のソースは、第2のソースリードに電気的に接続され、前記第2のゲートは、第2のゲートリードに電気的に接続されている請求項47記載の電子モジュール。
- 前記第1のソースリード及び前記第1のゲートリードは、前記第1の基板の第2の金属層に取り付けられており、前記第2のソースリード及び前記第2のゲートリードは、前記第2の基板の第4の金属層に取り付けられている請求項48記載の電子モジュール。
- 前記第1のソースリードは、前記第1の基板の表面から延び出し、前記第2のゲートリードは、前記第2の基板の表面から延び出し、前記第1のソースリードは、前記第2のスイッチングデバイスから離れる方向への屈曲を有し、前記第2のゲートリードは、前記第1のスイッチングデバイスから離れる方向への屈曲を有する請求項49記載の電子モジュール。
- 第1のソース電極、第1のゲート電極、第1のドレイン電極及び第1の半導体層を有し、前記第1のソース電極及び前記第1のゲート電極は、前記第1のゲート電極に対して前記第1の半導体層の反対側にあるエンハンスメントモードトランジスタと、
第2のソース電極及び第2のゲート電極を含み、前記第2のソース電極が第2の半導体層の上にあるデプリーションモードトランジスタとを備え、
前記エンハンスメントモードトランジスタは、前記第1のドレイン電極を前記第2のソース電極に電気的に接触させて、前記第2のソース電極の頂部に直接的に又は前記第2のソース電極の上に取り付けられている電子デバイス。 - 前記デプリーションモードトランジスタは、第2のドレイン電極を更に有し、前記第2のソース電極及び前記第2のドレイン電極は、共に前記第2の半導体層の第1の側にある請求項51記載の電子デバイス。
- 前記デプリーションモードトランジスタは、横型デバイスである請求項52記載の電子デバイス。
- 前記エンハンスメントモードトランジスタは、シリコンベースのトランジスタである請求項53記載の電子デバイス。
- 前記デプリーションモードトランジスタは、III族窒化物トランジスタである請求項54記載の電子デバイス。
- 前記第1のソース電極は、前記第2のゲート電極に電気的に接続されている請求項51記載の電子デバイス。
- 前記デプリーションモードトランジスタは、前記半導体層上に絶縁体層を有し、前記第2のソース電極は、前記絶縁体層の上にある請求項51記載の電子デバイス。
- 前記デプリーションモードトランジスタは、デバイスアクティブ領域及び非アクティブ領域を含み、デバイスチャネルは、前記デバイスアクティブ領域内の半導体層にあるが、前記非アクティブ領域内の半導体層にはなく、前記絶縁体層は、前記デバイスアクティブ領域及び前記非アクティブ領域の両方の上にある請求項57記載の電子デバイス。
- 前記エンハンスメントモードトランジスタは、前記絶縁層上にあり、前記デバイスアクティブ領域の一部及び前記非アクティブ領域の一部の直接上にある請求項58記載の電子デバイス。
- 前記デプリーションモードトランジスタは、前記エンハンスメントモードトランジスタより高い降伏電圧を有する請求項51記載の電子デバイス。
- 電子デバイスを製造する方法において、
第1のソース電極、第1のゲート電極、第1のドレイン電極及び第1の半導体層を有し、前記第1のソース電極及び前記第1のゲート電極は、前記第1のゲート電極に対して前記第1の半導体層の反対側にあるエンハンスメントモードトランジスタを準備するステップと、
第2のソース電極及び第2のゲート電極を含み、前記第2のソース電極が第2の半導体層の上にあるデプリーションモードトランジスタを準備するステップと、
前記第1のドレイン電極を前記第2のソース電極に電気的に接触させて、前記エンハンスメントモードトランジスタを前記第2のソース電極の頂部に直接的に又は前記第2のソース電極の上に取り付けるステップと、を有する方法。 - 前記デプリーションモードトランジスタは、横型デバイスである請求項61記載の方法。
- 前記第2のゲート電極を前記第1のソース電極にワイヤ接続するステップを更に有する請求項61記載の方法。
- スイッチングデバイスを含むパワーインバータを動作させる方法において、
パワーインバータを、少なくとも500Vの電圧を供給する高電圧源に接続するステップと、
前記スイッチングデバイスをオフ状態からオン状態にスイッチングするステップと、を有し、
前記オン状態において、前記スイッチングデバイスは、40〜50Aの電流を流し、
前記オフ状態において、前記スイッチングデバイスは、前記高電圧源が供給する電圧を阻止し、
前記スイッチングのスイッチング期間は、10ナノ秒未満であり、
前記スイッチングデバイスに印加される電圧は、前記高電圧源が供給する電圧の1.35倍を超えない方法。 - 前記スイッチング期間は、5ナノ秒未満である請求項64記載の方法。
- 前記スイッチングデバイスに印加される電圧は、700Vを超えない請求項64記載の方法。
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US20160240470A1 (en) | 2016-08-18 |
US9209176B2 (en) | 2015-12-08 |
EP2789011A2 (en) | 2014-10-15 |
US20160079154A1 (en) | 2016-03-17 |
US20130147540A1 (en) | 2013-06-13 |
CN104160506A (zh) | 2014-11-19 |
JP6158210B2 (ja) | 2017-07-05 |
EP2789011B1 (en) | 2019-05-29 |
WO2013085839A2 (en) | 2013-06-13 |
US9818686B2 (en) | 2017-11-14 |
TWI613787B (zh) | 2018-02-01 |
EP2789011A4 (en) | 2015-09-16 |
WO2013085839A3 (en) | 2013-09-26 |
CN104160506B (zh) | 2017-03-15 |
TW201332085A (zh) | 2013-08-01 |
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