JP2012529177A - 少数キャリアダイバータを含む高電圧絶縁ゲートバイポーラトランジスタ - Google Patents
少数キャリアダイバータを含む高電圧絶縁ゲートバイポーラトランジスタ Download PDFInfo
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- 229910052710 silicon Inorganic materials 0.000 claims description 34
- 239000010703 silicon Substances 0.000 claims description 34
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Abstract
【選択図】図5
Description
本出願は、2009年6月2日に出願された米国仮出願特許第61/183,219号に対して米国特許法第119条(e)に基づく優先権を主張するものであり、該特許出願の内容はその全体が記載されているかのように引用により本明細書に組み入れられる。
204 p+SiC
210 BJT
220 MOSFET
222 ゲート
240 n+SiC基板
245 nSiC注入層
250 pSiCベース層
255 pSiCドリフト層
260 SiC nウェル
270 ゲート絶縁層
275 抵抗接点
290 n+Si
Claims (19)
- コレクタ、エミッタ及びベースを有する広バンドギャップ半導体バイポーラ接合トランジスタ(「BJT」)と、
前記BJTの前記ベースに電流を供給するように構成された広バンドギャップ半導体MOSFETと、
前記BJTの前記ベースの導電型とは逆の導電型を有し、前記BJTの前記ベースとヘテロ接合を形成する、前記BJTの前記ベース上の少数キャリア転換半導体層と、
を含むことを特徴とする高電力絶縁ゲートバイポーラ接合トランジスタ(「IGBT」)。 - 前記広バンドギャップ半導体BJTがシリコンカーバイドBJTを含み、前記広バンドギャップ半導体MOSFETがシリコンカーバイドMOSFETを含む、
ことを特徴とする請求項1に記載の高電力IGBT。 - 前記ヘテロ接合が、前記ベースの材料のホモ接合の第2の拡散電位よりも低い第1の拡散電位を有する、
ことを特徴とする請求項1に記載の高電力IGBT。 - 前記少数キャリア転換半導体層が、ドープポリシリコン層を有する、
ことを特徴とする請求項2に記載の高電力IGBT。 - 前記IGBTが、
n型注入層と、
前記n型注入層上のp型層と、
前記p型層の上部にあるnウェルと、
前記nウェルの上部領域内にある高濃度ドープp型層と、
前記nウェル及び前記高濃度ドープp型層上のゲート誘電体層と、
前記ゲート誘電体層上のゲート電極と、
を含むことを特徴とする請求項4に記載の高電力IGBT。 - 前記n型注入層上の前記p型層が、
前記高濃度ドープp型層のドーピング濃度未満のドーピング濃度を有するp型ベース層と、
前記p型ベース層のドーピング濃度未満のドーピング濃度を有する、前記p型ベース層上のp型ドリフト層と、
を含むことを特徴とする請求項5に記載の高電力IGBT。 - 前記ドープポリシリコン層が、前記ゲート誘電体層と前記p型ドリフト層の間に存在する、
ことを特徴とする請求項6に記載の高電力IGBT。 - 前記ドープポリシリコン層の上面が、前記nウェルの上面よりも、前記n型注入層のさらに上方に存在する、
ことを特徴とする請求項7に記載の高電力IGBT。 - 前記高濃度ドープp型層の第1の側に存在するとともに前記ゲート電極の下に存在する前記nウェルの第1のチャネル領域が、前記高濃度ドープp型層の反対側に存在する前記nウェルの第2の領域と実質的に同じ濃度でドープされる、
ことを特徴とする請求項7に記載の高電力IGBT。 - 前記ドープポリシリコン層上に存在する前記ゲート絶縁層の中間部の厚みが、前記nウェル上に存在する前記ゲート絶縁層の端部の厚みよりも厚い、
ことを特徴とする請求項5に記載の高電力IGBT。 - 前記高濃度ドープp型層と前記少数キャリア転換半導体層の間の電気的接続をさらに含む、
ことを特徴とする請求項5に記載の高電力IGBT。 - n型シリコンカーバイド注入層と、
前記n型シリコンカーバイド注入層上のp型シリコンカーバイドベース層と、
前記n型シリコンカーバイド注入層に対向する、前記p型シリコンカーバイドベース層上のp型シリコンカーバイドドリフト層と、
前記p型シリコンカーバイドドリフト層の上部にあるシリコンカーバイドnウェルと、
前記p型シリコンカーバイドベース層に対向する、前記p型シリコンカーバイドドリフト層上のn型シリコン層と、
前記シリコンカーバイドnウェル及び前記n型シリコン層上のゲート絶縁層と、
前記シリコンカーバイドnウェル及び前記n型シリコン層に対向する、前記ゲート絶縁層上のゲート電極と、
を含むことを特徴とする高電力pチャネルシリコンカーバイド絶縁ゲートバイポーラ接合トランジスタ(「IGBT」)。 - 前記シリコンカーバイドnウェルの上面にあるp型シリコンカーバイドエミッタ層をさらに含み、前記n型シリコン層が、前記p型シリコンカーバイドエミッタ層に電気的に接続される、
ことを特徴とする請求項12に記載の高電力pチャネルシリコンカーバイドIGBT。 - 前記シリコン層が、前記p型シリコンカーバイドドリフト層とヘテロ接合を形成する少数キャリアダイバータを含む、
ことを特徴とする請求項13に記載の高電力pチャネルシリコンカーバイドIGBT。 - 前記シリコン層の上面が、前記シリコンカーバイドnウェルの上面よりも、前記n型シリコンカーバイド基板のさらに上方に存在する、
ことを特徴とする請求項14に記載の高電力pチャネルシリコンカーバイドIGBT。 - 高電力シリコンカーバイド絶縁ゲートバイポーラ接合トランジスタ(「IGBT」)であって、
コレクタ領域、エミッタ領域及びベース領域を含むシリコンカーバイドバイポーラ接合トランジスタ(「BJT」)と、
ソース領域、ドレイン領域及びゲート電極を含むシリコンカーバイドMOSFETと、
前記シリコンカーバイドIGBTのシリコンカーバイド層とp−nヘテロ接合を形成する、前記シリコンカーバイドIGBTの層構造内のドープ半導体層と、
を含むことを特徴とする高電力シリコンカーバイドIGBT。 - 前記ドープ半導体層がドープシリコン層を含む、
ことを特徴とする請求項16に記載の高電力シリコンカーバイドIGBT。 - 前記ドープシリコン層が、ドープポリシリコン少数キャリアダイバータを含む、
ことを特徴とする請求項17に記載の高電力シリコンカーバイドIGBT。 - 前記ドープポリシリコン層の上面が、前記BJTのコレクタ領域の上面よりも、前記IGBTのn型基板のさらに上方に存在する、
ことを特徴とする請求項18に記載の高電力シリコンカーバイドIGBT。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18321909P | 2009-06-02 | 2009-06-02 | |
US61/183,219 | 2009-06-02 | ||
US12/556,870 US8629509B2 (en) | 2009-06-02 | 2009-09-10 | High voltage insulated gate bipolar transistors with minority carrier diverter |
US12/556,870 | 2009-09-10 | ||
PCT/US2010/035709 WO2010141237A2 (en) | 2009-06-02 | 2010-05-21 | High voltage insulated gate bipolar transistors with minority carrier diverter |
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JP2012529177A true JP2012529177A (ja) | 2012-11-15 |
JP5671014B2 JP5671014B2 (ja) | 2015-02-18 |
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