JP5917060B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5917060B2 JP5917060B2 JP2011206216A JP2011206216A JP5917060B2 JP 5917060 B2 JP5917060 B2 JP 5917060B2 JP 2011206216 A JP2011206216 A JP 2011206216A JP 2011206216 A JP2011206216 A JP 2011206216A JP 5917060 B2 JP5917060 B2 JP 5917060B2
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- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78612—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device for preventing the kink- or the snapback effect, e.g. discharging the minority carriers of the channel region for preventing bipolar effect
- H01L29/78615—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device for preventing the kink- or the snapback effect, e.g. discharging the minority carriers of the channel region for preventing bipolar effect with a body contact
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
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- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- H01L29/78621—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure with LDD structure or an extension or an offset region or characterised by the doping profile
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- Thin Film Transistor (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
Weff/2≦Lg+Ldrift/2、
との関係式が成立する。
Weff/2≦Lg+Ldrift/2=Lb ・・・(1)
Wtie≦Weff ・・・(2)
Lb=Lg+Ldrift/2≦N×Weff ・・・(3)
Claims (8)
- 基材層と、該基材層の上に形成された半導体層と、前記基材層と前記半導体層との間に介在して前記半導体層を前記基材層から電気的に分離する埋め込み絶縁膜とを有するSOI基板を用いた半導体装置であって、
前記半導体層上に形成されたゲート絶縁膜と、
前記半導体層の上面に沿って前記ゲート絶縁膜上に形成され、所定の第1の方向に幅を有し且つ前記第1の方向と交差する第2の方向に長さを有するゲート電極と、
前記第2の方向における前記ゲート電極の両側のうちの一方の側で前記半導体層内に第1導電型の不純物拡散領域として形成され、前記第1の方向に沿って配列された複数のソース拡散領域と、
前記一方の側で前記半導体層内に前記第1導電型とは異なる第2導電型の不純物拡散領域として形成され、前記第1の方向に沿って配列された複数の電荷収集領域と、
前記ゲート電極の当該両側のうちの他方の側で前記半導体層内に前記第1導電型と同じ導電型の不純物拡散領域として形成されたドレイン拡散領域と、
前記埋め込み絶縁膜と前記複数のソース拡散領域と前記複数の電荷収集領域と前記ドレイン拡散領域とに囲まれるように前記半導体層内に形成されたボディ領域と、
前記ボディ領域と前記ドレイン拡散領域との間に介在するように前記半導体層内に形成された電界緩和領域と
を備え、
前記ソース拡散領域と前記電荷収集領域とは、前記第1の方向に沿って交互に配列されており、
前記第1の方向における前記ソース拡散領域の各々の幅をWeffとし、W eff が1μmより大きく、前記ゲート電極の長さをLgとし、前記第2の方向における前記電界緩和領域の長さをLdriftとするとき、
Weff/2≦Lg+Ldrift/2、
との関係式が成立する
ことを特徴とする半導体装置。 - 請求項1に記載の半導体装置であって、前記第2の方向における前記電界緩和領域の電界強度分布の最大ピーク位置が前記第2の方向における前記電界緩和領域の中央と一致するように、前記電界緩和領域の不純物濃度が最適化されていることを特徴とする半導体装置。
- 請求項2に記載の半導体装置であって、前記電界緩和領域は、前記第1導電型と同じ導電型を有し且つ前記ドレイン拡散領域よりも低い不純物濃度を有することを特徴とする半導体装置。
- 請求項3に記載の半導体装置であって、
前記ボディ領域は、前記第2導電型と同じ導電型を有し且つ前記電界緩和領域と接合しており、
前記ボディ領域と前記電界緩和領域との接合位置は、前記第2の方向における前記ゲート電極の一端の位置と一致する
ことを特徴とする半導体装置。 - 請求項1から4のうちのいずれか1項に記載の半導体装置であって、前記第1の方向における前記電荷収集領域の各々の幅をWtieとするとき、
Wtie≦Weff、
との関係式がさらに成立することを特徴とする半導体装置。 - 請求項1から5のうちのいずれか1項に記載の半導体装置であって、前記複数のソース拡散領域がN個(Nは2以上の整数)存在するとき、
Lg+Ldrift/2≦N×Weff、
との関係式がさらに成立することを特徴とする半導体装置。 - 請求項1から6のうちのいずれか1項に記載の半導体装置であって、
前記半導体層内に形成され活性領域を画定する素子分離構造をさらに備え、
前記複数のソース拡散領域と前記複数の電荷収集領域とは、前記活性領域内に形成されており、
前記第1の方向における前記活性領域の両端部には、それぞれ、前記電荷収集領域が形成されている
ことを特徴とする半導体装置。 - 請求項1から7のうちのいずれか1項に記載の半導体装置であって、
前記半導体層は、シリコン層であり、
前記埋め込み絶縁膜は、シリコン酸化膜を含む
ことを特徴とする半導体装置。
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JP2011206216A JP5917060B2 (ja) | 2011-09-21 | 2011-09-21 | 半導体装置 |
US13/614,529 US8981474B2 (en) | 2011-09-21 | 2012-09-13 | Semiconductor device |
CN2012103537974A CN103022131A (zh) | 2011-09-21 | 2012-09-21 | 半导体装置 |
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JP6568735B2 (ja) * | 2015-07-17 | 2019-08-28 | 日立オートモティブシステムズ株式会社 | スイッチ素子及び負荷駆動装置 |
JP6892221B2 (ja) * | 2016-03-04 | 2021-06-23 | エイブリック株式会社 | 半導体装置の製造方法 |
CN108449835B (zh) * | 2018-04-03 | 2024-01-05 | 矽力杰半导体技术(杭州)有限公司 | 封装结构以及led照明模组 |
CN110828540B (zh) | 2018-08-10 | 2022-03-11 | 无锡华润上华科技有限公司 | 半导体器件及其制造方法 |
JP7300968B2 (ja) * | 2019-11-14 | 2023-06-30 | 三菱電機株式会社 | 半導体装置 |
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DE69209678T2 (de) * | 1991-02-01 | 1996-10-10 | Philips Electronics Nv | Halbleiteranordnung für Hochspannungsverwendung und Verfahren zur Herstellung |
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JP2000269509A (ja) | 1999-01-11 | 2000-09-29 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
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JP2013069778A (ja) | 2013-04-18 |
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