JP5775322B2 - 半導体装置及びその作製方法 - Google Patents
半導体装置及びその作製方法 Download PDFInfo
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- JP5775322B2 JP5775322B2 JP2011034587A JP2011034587A JP5775322B2 JP 5775322 B2 JP5775322 B2 JP 5775322B2 JP 2011034587 A JP2011034587 A JP 2011034587A JP 2011034587 A JP2011034587 A JP 2011034587A JP 5775322 B2 JP5775322 B2 JP 5775322B2
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- semiconductor film
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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
- H01L29/02—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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
- H01L29/458—Ohmic electrodes on silicon for thin film silicon, e.g. source or drain electrode
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- 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
- H01L29/6675—Amorphous silicon or polysilicon transistors
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- 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
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66765—Lateral single gate single channel transistors with inverted structure, i.e. the channel layer is formed after the 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
- H01L29/78606—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
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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
- H01L29/78651—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
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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
- H01L29/78696—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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- Chemical & Material Sciences (AREA)
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- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
- Electrodes Of Semiconductors (AREA)
Description
本実施の形態では、本発明の一形態であるトランジスタの作製方法について、図1乃至図6を参照して説明する。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1及び図7を用いて説明する。
本実施の形態では、実施の形態1と比較して、オフ電流を低減できる薄膜トランジスタについて、図8を用いて説明する。
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9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。
103 ゲート電極
105 ゲート絶縁膜
107 微結晶半導体膜
109 微結晶半導体膜
107a 結晶粒
107b 非晶質半導体
109a 結晶粒
109b 非晶質半導体
111 半導体膜
111a 微結晶半導体領域
111b 非晶質半導体領域
111c 半導体結晶粒
113 不純物半導体膜
115 マスク
115a マスク
129a 配線
129b 配線
117 半導体積層体
121 不純物半導体膜
117a 微結晶半導体領域
117b 非晶質半導体領域
127 導電膜
131a 不純物半導体膜
131b 不純物半導体膜
133 半導体積層体
133a 微結晶半導体領域
133b 非晶質半導体領域
137 絶縁膜
139 バックゲート電極
123 プラズマ
141 マスク
133c 非晶質半導体領域
2700 電子書籍
2701 筐体
2703 筐体
2711 軸部
2705 表示部
2707 表示部
2721 電源
2723 操作キー
2725 スピーカ
9600 テレビジョン装置
9601 筐体
9603 表示部
9605 スタンド
9610 リモコン操作機
9609 操作キー
9607 表示部
9700 デジタルフォトフレーム
9701 筐体
9703 表示部
9301 上部筐体
9302 下部筐体
9303 表示部
9304 キーボード
9305 外部接続ポート
9307 表示部
Claims (3)
- 基板上方に設けられた第1のゲート電極と、
前記第1のゲート電極上方に設けられた第1のゲート絶縁膜と、
前記第1のゲート絶縁膜上方に設けられた半導体膜と、
前記半導体膜上方に設けられた第1の電極と、
前記半導体膜上方に設けられた第2の電極と、
前記第1の電極上方及び前記第2の電極上方に設けられた第2のゲート絶縁膜と、
前記第2のゲート絶縁膜上方に設けられた第2のゲート電極と、
前記半導体膜と前記第1の電極との間に設けられた第1の不純物半導体膜と、
前記半導体膜と前記第2の電極との間に設けられた第2の不純物半導体膜と、
前記半導体膜と前記第1の不純物半導体膜との間に設けられた第1の非晶質半導体領域と、
前記半導体膜と前記第2の不純物半導体膜との間に設けられた第2の非晶質半導体領域と、
を有し
前記半導体膜は、前記第1のゲート絶縁膜側において、結晶粒と、前記結晶粒の間を充填するように設けられた非晶質半導体を有する第1の領域を有し、
前記半導体膜は、前記第2のゲート絶縁膜側において、前記第1の領域よりも結晶性の高い第2の領域を有し、
前記第2の領域は、前記第2のゲート絶縁膜と接する領域を有することを特徴とする半導体装置。 - 基板上方に第1のゲート電極を形成し、
前記基板及び前記第1のゲート電極上方に第1のゲート絶縁膜を形成し、
前記第1のゲート絶縁膜上方に、第1の条件により第1の微結晶半導体領域を形成し、
前記第1の微結晶半導体領域上方に、第2の条件により第2の微結晶半導体領域を形成し、
前記第2の微結晶半導体領域上方に非晶質半導体領域を形成し、
前記非晶質半導体領域上方に第1の不純物半導体膜を形成し、
前記第1の不純物半導体膜の一部をエッチングして、島状の第2の不純物半導体膜を形成し、
前記第1の微結晶半導体領域、前記第2の微結晶半導体領域、及び前記非晶質半導体領域の一部をエッチングして、島状の第1の半導体積層体を形成し、
前記第2の不純物半導体膜上方に、ソース電極及びドレイン電極として機能する配線を形成し、
前記第2の不純物半導体膜の一部をエッチングして、ソース領域及びドレイン領域として機能する一対の不純物半導体膜を形成し、
前記非晶質半導体領域の一部をエッチングして、一対の非晶質半導体領域を形成するとともに、前記第2の微結晶半導体領域の一部を露出させ、
前記配線、前記一対の不純物半導体膜、前記一対の非晶質半導体領域及び前記第2の微結晶半導体領域上方に第2のゲート絶縁膜を形成し、
前記第2のゲート絶縁膜上方に第2のゲート電極を形成し、
前記第1の条件は、前記第2の条件よりもシリコンまたはゲルマニウムを含む堆積性気体の流量に対する水素の流量が小さいことを特徴とする半導体装置の作製方法。 - 請求項2において、
前記第1の条件は、シリコンまたはゲルマニウムを含む堆積性気体の流量に対する水素の流量が125倍以上180倍以下であり、
前記第2の条件は、シリコンまたはゲルマニウムを含む堆積性気体の流量に対する水素の流量が210倍以上1500倍以下であることを特徴とする半導体装置の作製方法。
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CN102163553B (zh) | 2016-01-20 |
US20110204364A1 (en) | 2011-08-25 |
JP2011192984A (ja) | 2011-09-29 |
KR20110096489A (ko) | 2011-08-30 |
TW201133866A (en) | 2011-10-01 |
KR101827329B1 (ko) | 2018-02-09 |
US8383434B2 (en) | 2013-02-26 |
CN102163553A (zh) | 2011-08-24 |
TWI497724B (zh) | 2015-08-21 |
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