JP4967264B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4967264B2 JP4967264B2 JP2005201054A JP2005201054A JP4967264B2 JP 4967264 B2 JP4967264 B2 JP 4967264B2 JP 2005201054 A JP2005201054 A JP 2005201054A JP 2005201054 A JP2005201054 A JP 2005201054A JP 4967264 B2 JP4967264 B2 JP 4967264B2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
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- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
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- 238000002955 isolation Methods 0.000 description 1
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- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0021—Modifications of threshold
- H03K19/0027—Modifications of threshold in field effect transistor circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/003—Modifications for increasing the reliability for protection
- H03K19/00369—Modifications for compensating variations of temperature, supply voltage or other physical parameters
- H03K19/00384—Modifications for compensating variations of temperature, supply voltage or other physical parameters in field effect transistor circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018585—Coupling arrangements; Interface arrangements using field effect transistors only programmable
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
- H10D30/0321—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] comprising silicon, e.g. amorphous silicon or polysilicon
- H10D30/0323—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] comprising silicon, e.g. amorphous silicon or polysilicon comprising monocrystalline silicon
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
- H10D30/6733—Multi-gate TFTs
- H10D30/6734—Multi-gate TFTs having gate electrodes arranged on both top and bottom sides of the channel, e.g. dual-gate TFTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/201—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates the substrates comprising an insulating layer on a semiconductor body, e.g. SOI
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Dram (AREA)
- Thin Film Transistor (AREA)
- Logic Circuits (AREA)
Description
(2)従来回路でも、これまでの提案はSRAMセルへの応用に限られていた。ゲートとウエルを直接接続した該回路の動作条件や低電圧化の限界などを、FD−SOI MOSTのデバイス特性と関連付けて明確にされていなかったためである。
入力(IN)波形が0からVDDに変化していく過程では、MOSTのVTはコンバータを介してダイナミックに変わる。今、NMOST(MN1)を例にとろう。入力電圧(VIN)のウエル電圧(Vwell)への変換率をk1、ウエル電圧の変化に対するVTの変化率をk2、また入力電圧が0VでのVT、すなわちVT(0)は、サブスレッショルド電流を許容できる大きな値0.2V(図2ではa点)と仮定する。入力電圧が0VからVINになると、MOSTのVTはVT(0)−k2Vwellとなるが、その時点でMOSTがオンしたとすると、
Vwell = k1VIN
VIN = VT(0)−k2Vwell
∴ VIN = VT(0)/(1+k1k2)―――――――――――――(1)
となる。したがって、オンとなり始める入力電圧は係数(1+k1k2)だけ小さくなる。実は、この入力電圧こそダイナミックに変化した結果のNMOSTのVTであり、それが小さくなったことを示す。
VT(0)−k2Vwell = VT(0)−k1k2VIN < 0 ―――――(2)
に設定すればよい。したがって、まずk1を大きくする回路方式が重要である。それには、ウエル電圧振幅をできるだけ大きくすればよい。図1の実施例がまさにそれである。あるいは図13(b)の回路なら大きな入力電圧、すなわち大きなVDDを使えば効果的である。k2を大きくするMOST構造も重要である。このためにはBOX層の厚さを薄くして下部MOSTの働きを高めることである。しかし薄くしすぎるとトンネル電流が発生するので、二酸化シリコン膜厚で2nm程度がその限界である。ただし膜厚2nm程度の二酸化シリコン膜以外に、BOX層形成後に必要な高温処理温度でもゲート膜界面が安定性を維持するのでオキシナイトライド(SiON)膜なども好適である。この場合には、二酸化シリコン膜換算で1.5nm程度にまで薄膜化できる。以上の動作と効果はPMOSTについても同様である。
Claims (6)
- 第1のゲートと埋め込み酸化膜の下に存在するウエル層を第2のゲートとする二重ゲートを持ちSOI層が完全に空乏化したSOI構造を有する第1のMOSトランジスタを含む第1の回路と、前記第1のMOSトランジスタの前記第1のゲートとその入力が接続され前記第1のMOSトランジスタの前記第2のゲートとその出力が接続される第2の回路とを有し、
前記第2の回路は、前記第1のMOSトランジスタの前記第2のゲートの電圧を制御する回路であって、前記第2の回路の出力パルスの電圧振幅は前記第1の回路の入力パルスの電圧振幅よりも大きく、
前記第2の回路は、前記第1の回路の入力電圧を検出し、その検出電圧から前記第1の回路の入力電圧よりも大きな電圧に変換する回路であることを特徴とする半導体装置。 - 請求項1において、
前記第1のMOSトランジスタの前記第2のゲートの電圧を、前記第1のMOSトランジスタの閾値電圧が導通時には小さくなるように、また非導通時には大きくなるように制御することを特徴とする半導体装置。 - 請求項1において、
前記第1の回路の入力電圧の高レベルと低レベルは、前記第1のMOSトランジスタの前記第1のゲートあるいは前記第2のゲートの高レベルと低レベルの間に設定されることを特徴とする半導体装置。 - 請求項1において、
前記第2の回路は、その第1のゲートとその第2のゲートとを直接接続した第2のMOSトランジスタを含むことを特徴とする半導体装置。 - 請求項1において、
前記第2の回路は、前記第1の回路の入力電圧よりも大きな電圧で動作する第1のゲートと第2のゲートが接続された第3のMOSトランジスタを含むことを特徴とする半導体装置。 - 請求項1において、
前記第1のMOSトランジスタの非導通時の閾値電圧は、サブスレッショルド電流を許容する最小閾値電圧よりも大きな値に設定されることを特徴とする半導体装置。
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005201054A JP4967264B2 (ja) | 2005-07-11 | 2005-07-11 | 半導体装置 |
EP10002249A EP2207203A1 (en) | 2005-07-11 | 2006-02-27 | Semiconductor devices |
EP06003938A EP1744364A3 (en) | 2005-07-11 | 2006-02-27 | Semiconductor devices |
KR1020060018925A KR101106916B1 (ko) | 2005-07-11 | 2006-02-27 | 반도체 장치 |
EP09001297A EP2053657B1 (en) | 2005-07-11 | 2006-02-27 | Method for operating a semiconductor device |
EP10002248A EP2207202A1 (en) | 2005-07-11 | 2006-02-27 | Semiconductor devices |
TW095106628A TW200723499A (en) | 2005-07-11 | 2006-02-27 | Semiconductor devices |
US11/362,172 US7511558B2 (en) | 2005-07-11 | 2006-02-27 | Semiconductor devices utilizing double gated fully depleted silicon on insulator MOS transistors |
CN2008100868803A CN101281929B (zh) | 2005-07-11 | 2006-02-28 | 半导体器件 |
CNB2006100093694A CN100511688C (zh) | 2005-07-11 | 2006-02-28 | 半导体器件 |
US11/714,844 US7385436B2 (en) | 2005-07-11 | 2007-03-07 | Fully depleted silicon on insulator semiconductor devices |
Applications Claiming Priority (1)
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JP2005201054A JP4967264B2 (ja) | 2005-07-11 | 2005-07-11 | 半導体装置 |
Publications (3)
Publication Number | Publication Date |
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JP2007019357A JP2007019357A (ja) | 2007-01-25 |
JP2007019357A5 JP2007019357A5 (ja) | 2008-02-21 |
JP4967264B2 true JP4967264B2 (ja) | 2012-07-04 |
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JP2005201054A Expired - Fee Related JP4967264B2 (ja) | 2005-07-11 | 2005-07-11 | 半導体装置 |
Country Status (6)
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---|---|
US (2) | US7511558B2 (ja) |
EP (4) | EP2207202A1 (ja) |
JP (1) | JP4967264B2 (ja) |
KR (1) | KR101106916B1 (ja) |
CN (2) | CN101281929B (ja) |
TW (1) | TW200723499A (ja) |
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2005
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2006
- 2006-02-27 TW TW095106628A patent/TW200723499A/zh unknown
- 2006-02-27 EP EP10002248A patent/EP2207202A1/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
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EP2053657A2 (en) | 2009-04-29 |
US20070152736A1 (en) | 2007-07-05 |
KR20070007703A (ko) | 2007-01-16 |
US7511558B2 (en) | 2009-03-31 |
TW200723499A (en) | 2007-06-16 |
EP2207202A1 (en) | 2010-07-14 |
CN1897284A (zh) | 2007-01-17 |
EP2207203A1 (en) | 2010-07-14 |
EP2053657B1 (en) | 2012-11-07 |
US20070008027A1 (en) | 2007-01-11 |
JP2007019357A (ja) | 2007-01-25 |
CN101281929A (zh) | 2008-10-08 |
US7385436B2 (en) | 2008-06-10 |
CN100511688C (zh) | 2009-07-08 |
EP1744364A3 (en) | 2008-06-04 |
EP2053657A3 (en) | 2009-07-22 |
EP1744364A2 (en) | 2007-01-17 |
CN101281929B (zh) | 2010-10-13 |
KR101106916B1 (ko) | 2012-01-25 |
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