JP5948031B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5948031B2 JP5948031B2 JP2011196421A JP2011196421A JP5948031B2 JP 5948031 B2 JP5948031 B2 JP 5948031B2 JP 2011196421 A JP2011196421 A JP 2011196421A JP 2011196421 A JP2011196421 A JP 2011196421A JP 5948031 B2 JP5948031 B2 JP 5948031B2
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- Prior art keywords
- film
- microcrystalline semiconductor
- insulating film
- region
- microcrystalline
- Prior art date
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/78618—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/78645—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate
- H01L29/78648—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate arranged on opposing sides of the channel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/78651—Silicon transistors
- H01L29/7866—Non-monocrystalline silicon transistors
- H01L29/78663—Amorphous silicon transistors
- H01L29/78669—Amorphous silicon transistors with inverted-type structure, e.g. with bottom gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/78651—Silicon transistors
- H01L29/7866—Non-monocrystalline silicon transistors
- H01L29/78672—Polycrystalline or microcrystalline silicon transistor
- H01L29/78678—Polycrystalline or microcrystalline silicon transistor with inverted-type structure, e.g. with bottom gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
本実施の形態では、信頼性の高い薄膜トランジスタ及びその作製方法について、説明する。
本実施の形態では、実施の形態1と異なる窒素濃度の低い微結晶半導体膜の形成方法について、図7を用いて説明する。本実施の形態では、処理室を複数有する、所謂マルチチャンバーのCVD装置を用いてゲート絶縁膜及び微結晶半導体膜を形成することが、実施の形態1と異なる。
本実施の形態では、実施の形態1及び実施の形態2よりも、微結晶半導体膜に含まれる窒素濃度を低減することが可能な方法について、図4及び図8を用いて説明する。なお、本実施の形態では、実施の形態1を用いて説明するが、適宜実施の形態2に適用することができる。
本実施の形態では、実施の形態1乃至実施の形態3の微結晶半導体膜と比較して、混相粒の緻密な微結晶半導体膜の作製方法について、図9を用いて説明する。
本実施の形態では、実施の形態1乃至実施の形態4と比較して、さらに、オフ電流の低減が可能な薄膜トランジスタの作製方法について、図3及び図10を用いて説明する。
上記実施の形態により薄膜トランジスタを作製し、該薄膜トランジスタを画素部、さらには駆動回路に用いて表示機能を有する半導体装置(表示装置ともいう。)を作製することができる。また、薄膜トランジスタを用いた駆動回路の一部または全体を、画素部と同じ基板上に一体形成し、システムオンパネルを形成することができる。
Claims (4)
- ゲート電極と、
前記ゲート電極上のゲート絶縁膜と、
前記ゲート絶縁膜上の半導体膜と、
前記半導体膜上の一対の不純物半導体膜と、
前記一対の不純物半導体膜上の配線と、
前記ゲート絶縁膜、前記半導体膜、前記一対の不純物半導体膜、及び前記配線上の絶縁膜と、
を有し、
前記半導体膜は、
前記ゲート絶縁膜上の第1の領域と、
前記第1の領域上の一対の第2の領域と、
前記一対の第2の領域上の一対の第3の領域と、を有し、
前記第1の領域は、微結晶半導体を有し、
前記第2の領域は、微結晶半導体を有し、
前記第3の領域は、非晶質半導体を有し、
前記第1の領域は、前記絶縁膜と接する領域を有し、
前記第2の領域において、二次イオン質量分析法の窒素濃度プロファイルは、ピークを有し、
前記第1の領域の前記絶縁膜と接する領域において、二次イオン質量分析法の窒素濃度プロファイルは、ピークを有さない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の領域と前記第3の領域との界面付近における窒素濃度は、前記第1の領域と前記絶縁膜との界面付近における窒素濃度より高いことを特徴とする半導体装置。 - 請求項1又は2において、
前記第2の領域と前記第3の領域との界面は、凹凸状であり、
前記第1の領域と前記絶縁膜との界面は、平坦であることを特徴とする半導体装置。 - 請求項1乃至3のいずれか一項において、
前記第2の領域は、凸状の結晶を有することを特徴とする半導体装置。
Priority Applications (1)
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JP2011196421A JP5948031B2 (ja) | 2010-09-14 | 2011-09-08 | 半導体装置 |
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JP2010205992 | 2010-09-14 | ||
JP2010205992 | 2010-09-14 | ||
JP2011196421A JP5948031B2 (ja) | 2010-09-14 | 2011-09-08 | 半導体装置 |
Publications (3)
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JP2012084857A JP2012084857A (ja) | 2012-04-26 |
JP2012084857A5 JP2012084857A5 (ja) | 2014-10-16 |
JP5948031B2 true JP5948031B2 (ja) | 2016-07-06 |
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JP2011196421A Expired - Fee Related JP5948031B2 (ja) | 2010-09-14 | 2011-09-08 | 半導体装置 |
Country Status (4)
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US (1) | US8624254B2 (ja) |
JP (1) | JP5948031B2 (ja) |
KR (1) | KR20120028247A (ja) |
TW (1) | TWI538218B (ja) |
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JP6705663B2 (ja) * | 2015-03-06 | 2020-06-03 | 株式会社半導体エネルギー研究所 | 半導体装置およびその作製方法 |
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-
2011
- 2011-09-06 TW TW100132085A patent/TWI538218B/zh not_active IP Right Cessation
- 2011-09-07 US US13/226,775 patent/US8624254B2/en not_active Expired - Fee Related
- 2011-09-08 JP JP2011196421A patent/JP5948031B2/ja not_active Expired - Fee Related
- 2011-09-08 KR KR1020110091078A patent/KR20120028247A/ko not_active Application Discontinuation
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Publication number | Publication date |
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US8624254B2 (en) | 2014-01-07 |
US20120061676A1 (en) | 2012-03-15 |
JP2012084857A (ja) | 2012-04-26 |
TWI538218B (zh) | 2016-06-11 |
TW201246551A (en) | 2012-11-16 |
KR20120028247A (ko) | 2012-03-22 |
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