JP6562359B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6562359B2 JP6562359B2 JP2016529015A JP2016529015A JP6562359B2 JP 6562359 B2 JP6562359 B2 JP 6562359B2 JP 2016529015 A JP2016529015 A JP 2016529015A JP 2016529015 A JP2016529015 A JP 2016529015A JP 6562359 B2 JP6562359 B2 JP 6562359B2
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- electrode
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- gate electrode
- effect transistor
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Junction Field-Effect Transistors (AREA)
- Semiconductor Integrated Circuits (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
以下に、第1の実施形態に係る半導体装置について、図面を参照しながら説明する。図1は、第1の実施形態に係る半導体装置を示す断面模式図を示し、図2は、第1の実施形態に係る半導体装置を示す等価回路図を示している。図1及び図2に示すように、本実施形態の半導体装置は、化合物半導体からなる第1の電界効果トランジスタ素子102と第2の電界効果トランジスタ素子202とにより構成される。
以下に、第2の実施形態に係る半導体装置について、図面を参照しながら説明する。図7は、第2の実施形態に係る半導体装置を示す断面模式図を示し、図8は、第2の実施形態に係る半導体装置を示す等価回路図を示している。図7及び図8において、図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第2の実施形態の変形例に係る半導体装置について、図面を参照しながら説明する。図9は、第2の実施形態の変形例に係る半導体装置を示す断面模式図を示し、図10は、第2の実施形態の変形例に係る半導体装置を示す等価回路図を示している。図9及び図10において、図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第3の実施形態に係る半導体装置について、図面を参照しながら説明する。図11は、第3の実施形態に係る半導体装置を示す断面模式図を示し、図12は、第3の実施形態に係る半導体装置を示す等価回路図を示している。図11及び図12において、図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第4の実施形態に係る半導体装置について、図面を参照しながら説明する。図13は、第4の実施形態に係る半導体装置を示す断面模式図を示している。図13において、図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第5の実施形態に係る半導体装置について、図面を参照しながら説明する。図14は、第5の実施形態に係る半導体装置を示す断面模式図を示している。図14において、図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第6の実施形態に係る半導体装置について、図面を参照しながら説明する。図15は、第6の実施形態に係る半導体装置を示す断面模式図を示している。図15において、図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第7の実施形態に係る半導体装置について、図面を参照しながら説明する。図16は、第7の実施形態に係る半導体装置を示す断面模式図を示している。図16において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
104 基板
106 チャネル層
108 バリア層
109 半導体層積層体
110 第1のドレイン電極
110A 第1のドレイン電極パッド
112 第1のソース電極
112A 第1のソース電極パッド
114 第1のゲート電極
114A 第1のゲート電極パッド
116 第1のチャネル領域
118 外部ドレイン端子
120 外部ソース端子
122 外部ゲート端子
124、126、128、224、224A、226、226A、228、228A、324、326、424、426、524、526 配線
124A、126A、128A、224B、226B、228B ワイヤ配線
130 第1の素子分離領域
132 第1のチップ
134 台座
136 第1のゲートリセス
138 第1の非ゲートリセス
140 第1の非ゲートリセス
202 第2の電界効果トランジスタ素子
210 第2のドレイン電極
210A 第2のドレイン電極パッド
212 第2のソース電極
212A 第2のソース電極パッド
214 第2のゲート電極
214A 第2のゲート電極パッド
216 第2のチャネル領域
232 第2のチップ
233 第3のチップ
236 第2のゲートリセス
238 第2の非ゲートリセス
240 第2の非ゲートリセス
302 第1の電圧降下素子
310 第1のアノード電極
312 第1のカソード電極
316 第3のチャネル領域
330 第2の素子分離領域
402 第2の電圧降下素子
410 第2のアノード電極
412 第2のカソード電極
416 第4のチャネル領域
430 第3の素子分離領域
502 インピーダンス素子
510、512 電極
516 第5のチャネル領域
530 第4の素子分離領域
802 第1のトランジスタ
810 第2のオーミック電極
812 第1のオーミック電極
814 ゲート電極
902 第2のトランジスタ
910 第2の保護素子オーミック電極
912 第1の保護素子オーミック電極
914 保護素子ゲート電極
Claims (8)
- 化合物半導体からなる第1の半導体層積層体と、
前記第1の半導体層積層体上に配置される第1のドレイン電極、第1のソース電極及び第1のゲート電極を有する第1の電界効果トランジスタ素子と、
化合物半導体からなる第2の半導体層積層体と、
前記第2の半導体層積層体上に配置された第2のドレイン電極、第2のソース電極及び第2のゲート電極を有し、前記第1の電界効果トランジスタ素子の保護素子となる第2の電界効果トランジスタ素子とを備え、
前記第1の電界効果トランジスタ素子は、第1のチャネル層と、前記第1のチャネル層上に配置された第1のバリア層とを有し、
前記第2の電界効果トランジスタ素子は、第2のチャネル層と、前記第2のチャネル層上に配置された第2のバリア層とを有し、
前記第2のゲート電極は、前記第2の半導体層積層体にショットキー接合またはpn接合しており、
前記第2のドレイン電極は前記第1のドレイン電極に電気的に接続され、
前記第2のソース電極は前記第1のゲート電極に電気的に接続され、
前記第2のゲート電極は前記第1のソース電極に電気的に接続された、
半導体装置。 - さらに、
前記第1のソース電極から前記第2のゲート電極までの電流経路中に配置された第1の電圧降下素子を備える、
請求項1に記載の半導体装置。 - さらに、
前記第2のソース電極から前記第1のゲート電極までの電流経路中に配置された第2の電圧降下素子を備える、
請求項1に記載の半導体装置。 - 前記第1の電圧降下素子または前記第2の電圧降下素子は、ダイオードである、
請求項2または3に記載の半導体装置。 - 前記第2のゲート電極のゲート長は、前記第1のゲート電極のゲート長よりも長い、
請求項1〜4のいずれか1項に記載の半導体装置。 - 前記第2のゲート電極は、前記第2のバリア層に形成された凹部である第2のゲートリセス上に配置された、
請求項1〜5のいずれか1項に記載の半導体装置。 - 前記第1のゲート電極は、前記第1のバリア層に形成された凹部である第1のゲートリセス上に配置され、
前記第2のゲートリセスのゲート長方向における幅は、前記第1のゲートリセスのゲート長方向における幅よりも短い、
請求項6に記載の半導体装置。 - ゲート長方向において、前記第2のゲートリセスの中心位置は、前記第2のゲート電極の中心位置よりも、前記第2のドレイン電極に近い、
請求項6または7に記載の半導体装置。
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