JP5752447B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP5752447B2 JP5752447B2 JP2011051067A JP2011051067A JP5752447B2 JP 5752447 B2 JP5752447 B2 JP 5752447B2 JP 2011051067 A JP2011051067 A JP 2011051067A JP 2011051067 A JP2011051067 A JP 2011051067A JP 5752447 B2 JP5752447 B2 JP 5752447B2
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- JP
- Japan
- Prior art keywords
- film
- pair
- microcrystalline silicon
- silicon carbide
- microcrystalline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000004065 semiconductor Substances 0.000 title claims description 119
- 229910021424 microcrystalline silicon Inorganic materials 0.000 claims description 243
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- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 146
- 229910052757 nitrogen Inorganic materials 0.000 claims description 111
- 239000012535 impurity Substances 0.000 claims description 76
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- 239000000758 substrate Substances 0.000 claims description 40
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- 229910052799 carbon Inorganic materials 0.000 claims description 31
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- 239000007789 gas Substances 0.000 description 65
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Classifications
-
- 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
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- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
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- 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
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- 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
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- 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
- H01L29/78684—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys
- H01L29/78687—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys with a multilayer structure or superlattice structure
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- H—ELECTRICITY
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- 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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Description
本実施の形態では、本発明の一形態である半導体装置に用いることが可能な薄膜トランジスタの断面構造について、図1を用いて説明する。なお、薄膜トランジスタは、p型よりもn型の方が、キャリアの移動度が高い。また、同一の基板上に形成する薄膜トランジスタを全て同じ極性に統一すると、工程数を抑えることができ、好ましい。そのため、本実施の形態では、n型の薄膜トランジスタについて説明する。
本実施の形態では、実施の形態1と異なる構造の薄膜トランジスタについて、図2を用いて説明する。
本実施の形態では、実施の形態1及び実施の形態2と異なる構造の薄膜トランジスタについて、図3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3に示す薄膜トランジスタと比較して、更にオフ電流の低い薄膜トランジスタについて、図4を用いて説明する。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及び実施の形態3に本実施の形態を適用することができる。
本実施の形態では、実施の形態1及び実施の形態2に示す薄膜トランジスタの作製方法について、図5及び図6を用いて説明する。なお、本実施の形態では、図1(A)に示す薄膜トランジスタの作製方法を説明するが、適宜実施の形態1及び実施の形態2に示す他の薄膜トランジスタに適宜適用することができる。
本実施の形態では、実施の形態3に示す薄膜トランジスタの作製方法について、図7乃至図9を用いて説明する。
本実施の形態では、実施の形態5及び実施の形態6と比較して、オフ電流をさらに低減できる薄膜トランジスタの作製方法について、図5及び図10を用いて説明する。ここでは、実施の形態5を用いて説明するが、適宜実施の形態6を適用することができる。
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。
本明細書に開示する半導体装置は、電子ペーパーとして適用することができる。電子ペーパーは、情報を表示するものであればあらゆる分野の電子機器に用いることが可能である。例えば、電子ペーパーを用いて、電子書籍(電子ブック)、ポスター、デンジタルサイネージ、PID(Public Information Display)、電車などの乗り物の車内広告、クレジットカード等の各種カードにおける表示等に適用することができる。電子機器の一例を図11に示す。
本明細書に開示する半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、例えば、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラ、デジタルフォトフレーム、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。
・試料3:流量3sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
・試料4:流量4sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
・試料5:流量5sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
・試料6:流量6sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
・試料7:流量7sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
・試料8:流量8sccmのCH3SiH3、流量3sccmのSiH4、流量750sccmのH2、流量750sccmのAr
Claims (5)
- 基板上に形成されるゲート電極と、
前記ゲート電極を覆うゲート絶縁膜と、
前記ゲート絶縁膜上に形成される微結晶シリコン膜と、
前記微結晶シリコン膜上に形成される一対のシリコンカーバイド膜と、
前記シリコンカーバイド膜上に形成される一対の不純物半導体膜と、
前記一対の不純物半導体膜に接する配線と、を有し、
前記微結晶シリコン膜と前記一対のシリコンカーバイド膜との間に、一対の炭素を含む微結晶シリコン膜を有し、
前記一対のシリコンカーバイド膜は、非晶質シリコンカーバイド膜であることを特徴とする半導体装置。 - 基板上に形成されるゲート電極と、
前記ゲート電極を覆うゲート絶縁膜と、
前記ゲート絶縁膜上に形成される微結晶シリコン膜と、
前記微結晶シリコン膜上に形成される一対のシリコンカーバイド膜と、
前記シリコンカーバイド膜上に形成される一対の不純物半導体膜と、
前記一対の不純物半導体膜に接する配線と、を有し、
前記微結晶シリコン膜と前記一対のシリコンカーバイド膜との間に、一対の窒素を含む微結晶シリコン膜と、前記一対の窒素を含む微結晶シリコン膜に接する一対の窒素を含む非晶質シリコン膜と、を有し、
前記一対のシリコンカーバイド膜は、非晶質シリコンカーバイド膜であることを特徴とする半導体装置。 - 基板上に形成されるゲート電極と、
前記ゲート電極を覆うゲート絶縁膜と、
前記ゲート絶縁膜上に形成される微結晶シリコン膜と、
前記微結晶シリコン膜上に形成される一対のシリコンカーバイド膜と、
前記シリコンカーバイド膜上に形成される一対の不純物半導体膜と、
前記一対の不純物半導体膜に接する配線と、を有し、
前記微結晶シリコン膜と前記一対のシリコンカーバイド膜との間に、一対の炭素及び窒素を含む微結晶シリコン膜と、前記一対の炭素及び窒素を含む微結晶シリコン膜に接する一対の炭素及び窒素を含む非晶質シリコン膜と、を有し、
前記一対のシリコンカーバイド膜は、非晶質シリコンカーバイド膜であることを特徴とする半導体装置。 - 基板上に形成されるゲート電極と、
前記ゲート電極を覆うゲート絶縁膜と、
前記ゲート絶縁膜上に形成される微結晶シリコン膜と、
前記微結晶シリコン膜上に形成される一対のシリコンカーバイド膜と、
前記シリコンカーバイド膜上に形成される一対の不純物半導体膜と、
前記一対の不純物半導体膜に接する配線と、を有し、
前記微結晶シリコン膜と前記一対のシリコンカーバイド膜との間に、一対の窒素を含む微結晶シリコン膜を有し、
前記一対のシリコンカーバイド膜は、微結晶シリコンカーバイド膜であることを特徴とする半導体装置。 - 基板上に形成されるゲート電極と、
前記ゲート電極を覆うゲート絶縁膜と、
前記ゲート絶縁膜上に形成される微結晶シリコン膜と、
前記微結晶シリコン膜上に形成される一対のシリコンカーバイド膜と、
前記シリコンカーバイド膜上に形成される一対の不純物半導体膜と、
前記一対の不純物半導体膜に接する配線と、を有し、
前記微結晶シリコン膜と前記一対のシリコンカーバイド膜との間に、一対の炭素及び窒素を含む微結晶シリコン膜を有し、
前記一対のシリコンカーバイド膜は、微結晶シリコンカーバイド膜であることを特徴とする半導体装置。
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JP6517535B2 (ja) * | 2015-02-25 | 2019-05-22 | エルジー ディスプレイ カンパニー リミテッド | シリコン系薄膜半導体装置、およびシリコン系薄膜半導体装置の製造方法 |
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JPS56122123A (en) * | 1980-03-03 | 1981-09-25 | Shunpei Yamazaki | Semiamorphous semiconductor |
JPS6457755A (en) * | 1987-08-28 | 1989-03-06 | Sumitomo Metal Ind | Thin-film semiconductor element |
JP2571957B2 (ja) | 1988-09-19 | 1997-01-16 | 株式会社半導体エネルギー研究所 | バッファ層を介した炭素または炭素を主成分とする被膜及びその作製方法 |
JPH0288250U (ja) * | 1988-12-27 | 1990-07-12 | ||
JPH05129608A (ja) | 1991-10-31 | 1993-05-25 | Sharp Corp | 半導体装置 |
JPH06333949A (ja) | 1993-05-21 | 1994-12-02 | Kyocera Corp | 薄膜トランジスタの製造方法 |
JPH07131030A (ja) | 1993-11-05 | 1995-05-19 | Sony Corp | 表示用薄膜半導体装置及びその製造方法 |
FR2719416B1 (fr) * | 1994-04-29 | 1996-07-05 | Thomson Lcd | Procédé de passivation des flancs d'un composant semiconducteur à couches minces. |
JPH09139503A (ja) * | 1995-11-14 | 1997-05-27 | Sharp Corp | 逆スタガ型薄膜トランジスタおよびその製造方法と、それを用いた液晶表示装置 |
US5811325A (en) * | 1996-12-31 | 1998-09-22 | Industrial Technology Research Institute | Method of making a polysilicon carbon source/drain heterojunction thin-film transistor |
JP2000124456A (ja) * | 1998-10-12 | 2000-04-28 | Shoka Kagi Kofun Yugenkoshi | 高エネルギーギャップオフセット層構造を有するtft素子 |
JP2001053283A (ja) * | 1999-08-12 | 2001-02-23 | Semiconductor Energy Lab Co Ltd | 半導体装置及びその作製方法 |
JP4748954B2 (ja) | 2003-07-14 | 2011-08-17 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
TWI372463B (en) * | 2003-12-02 | 2012-09-11 | Semiconductor Energy Lab | Laser irradiation apparatus, laser irradiation method, and method for manufacturing semiconductor device |
JP5159021B2 (ja) | 2003-12-02 | 2013-03-06 | 株式会社半導体エネルギー研究所 | 半導体装置の作製方法 |
JP4754798B2 (ja) * | 2004-09-30 | 2011-08-24 | 株式会社半導体エネルギー研究所 | 表示装置の作製方法 |
JP2009049384A (ja) * | 2007-07-20 | 2009-03-05 | Semiconductor Energy Lab Co Ltd | 発光装置 |
TWI575293B (zh) * | 2007-07-20 | 2017-03-21 | 半導體能源研究所股份有限公司 | 液晶顯示裝置 |
JP5216446B2 (ja) * | 2007-07-27 | 2013-06-19 | 株式会社半導体エネルギー研究所 | プラズマcvd装置及び表示装置の作製方法 |
JP2009071289A (ja) * | 2007-08-17 | 2009-04-02 | Semiconductor Energy Lab Co Ltd | 半導体装置およびその作製方法 |
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KR101484297B1 (ko) * | 2007-08-31 | 2015-01-19 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 표시장치 및 표시장치의 제작방법 |
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JP5311955B2 (ja) | 2007-11-01 | 2013-10-09 | 株式会社半導体エネルギー研究所 | 表示装置の作製方法 |
US8138032B2 (en) * | 2008-04-18 | 2012-03-20 | Semiconductor Energy Laboratory Co., Ltd. | Method for manufacturing thin film transistor having microcrystalline semiconductor film |
US9000441B2 (en) | 2008-08-05 | 2015-04-07 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and display device |
JP5562603B2 (ja) | 2008-09-30 | 2014-07-30 | 株式会社半導体エネルギー研究所 | 表示装置 |
JP5595003B2 (ja) | 2008-10-23 | 2014-09-24 | 株式会社半導体エネルギー研究所 | 表示装置 |
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