JP6068992B2 - 半導体装置の作製方法 - Google Patents
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- H10D86/423—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 characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
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- H10D86/481—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 characterised by multiple TFTs integrated with passive devices, e.g. auxiliary capacitors
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- H10D86/40—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 characterised by multiple TFTs
- H10D86/60—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 characterised by multiple TFTs wherein the TFTs are in active matrices
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Description
本実施の形態では、半導体装置及び半導体装置の作製方法の一形態を、図1を用いて説明する。本実施の形態では、半導体装置の一例として酸化物半導体膜を有するトランジスタを示す。
CAAC−OS膜は、例えば、多結晶である酸化物半導体スパッタリング用ターゲットを用い、スパッタリング法によって成膜する。当該スパッタリング用ターゲットにイオンが衝突すると、スパッタリング用ターゲットに含まれる結晶領域がa−b面から劈開し、a−b面に平行な面を有する平板状またはペレット状のスパッタリング粒子として剥離することがある。この場合、当該平板状のスパッタリング粒子が、結晶状態を維持したまま基板に到達することで、CAAC−OS膜を成膜することができる。
本実施の形態では、酸化物半導体膜403の一部を非晶質化させ、酸化物半導体膜のチャネル形成領域409から非晶質領域445a、445bに水素を引き寄せて固定化させ、チャネル形成領域の水素を極力除去する。
本実施の形態では、本明細書に示すトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置の一例を、図面を用いて説明する。
本実施の形態においては、実施の形態1又は実施の形態2に示すトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置について、実施の形態3に示した構成と異なる構成について、図6及び図7を用いて説明を行う。
本実施の形態では、先の実施の形態で示した半導体装置を携帯電話、スマートフォン、電子書籍などの携帯機器に応用した場合の例を図8乃至図11を用いて説明する。
Claims (3)
- 酸化物半導体膜と、
ゲート電極と、
前記酸化物半導体膜と、前記ゲート電極との間のゲート絶縁膜と、
前記ゲート電極の側面の、絶縁膜と、を有し、
前記絶縁膜は、第1の絶縁膜と、前記第1の絶縁膜の外側の第2の絶縁膜とを有する半導体装置の作製方法であって、
前記ゲート電極を覆って、前記第1の絶縁膜を形成する第1の工程と、
前記第1の絶縁膜に、酸素を導入する第2の工程と、を有し、
前記第2の工程において、O2ガス、N2Oガス、CO2ガス、COガス、又はNO2ガスと、希ガスとを含有させた供給ガスを用い、
前記第2の工程を経て、前記第1の絶縁膜の酸素濃度は、前記第2の絶縁膜の酸素濃度よりも高くなることを特徴とする半導体装置の作製方法。 - 酸化物半導体膜と、
ゲート電極と、
前記酸化物半導体膜と、前記ゲート電極との間のゲート絶縁膜と、
前記ゲート電極の側面の、絶縁膜と、を有し、
前記絶縁膜は、第1の絶縁膜と、前記第1の絶縁膜の外側の第2の絶縁膜とを有する半導体装置の作製方法であって、
前記ゲート電極を覆って、前記第1の絶縁膜を形成する第1の工程と、
前記第1の絶縁膜と、前記ゲート電極と重なっていない前記ゲート絶縁膜と、前記ゲート電極と重なっていない前記酸化物半導体膜とに、酸素を導入する第2の工程と、を有し、
前記第2の工程において、O2ガス、N2Oガス、CO2ガス、COガス、又はNO2ガスと、希ガスとを含有させた供給ガスを用い、
前記第2の工程を経て、前記第1の絶縁膜の酸素濃度は、前記第2の絶縁膜の酸素濃度よりも高くなることを特徴とする半導体装置の作製方法。 - 請求項1又は請求項2において、
前記希ガスは、アルゴンガスを有することを特徴とする半導体装置の作製方法。
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| JP2013008870A JP6068992B2 (ja) | 2012-01-26 | 2013-01-22 | 半導体装置の作製方法 |
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| JP2013008870A JP6068992B2 (ja) | 2012-01-26 | 2013-01-22 | 半導体装置の作製方法 |
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| JP2015060767A Division JP6023836B2 (ja) | 2012-01-26 | 2015-03-24 | 半導体装置の作製方法 |
| JP2016251483A Division JP6310050B2 (ja) | 2012-01-26 | 2016-12-26 | 半導体装置、及び半導体装置の作製方法 |
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| JP2013175711A JP2013175711A (ja) | 2013-09-05 |
| JP2013175711A5 JP2013175711A5 (ja) | 2015-12-03 |
| JP6068992B2 true JP6068992B2 (ja) | 2017-01-25 |
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| JP2015060767A Active JP6023836B2 (ja) | 2012-01-26 | 2015-03-24 | 半導体装置の作製方法 |
| JP2016251483A Expired - Fee Related JP6310050B2 (ja) | 2012-01-26 | 2016-12-26 | 半導体装置、及び半導体装置の作製方法 |
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| JP2013161878A (ja) * | 2012-02-02 | 2013-08-19 | Renesas Electronics Corp | 半導体装置、および半導体装置の製造方法 |
| US9859114B2 (en) | 2012-02-08 | 2018-01-02 | Semiconductor Energy Laboratory Co., Ltd. | Oxide semiconductor device with an oxygen-controlling insulating layer |
| US20130221345A1 (en) | 2012-02-28 | 2013-08-29 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing the same |
| TWI614813B (zh) | 2013-01-21 | 2018-02-11 | 半導體能源研究所股份有限公司 | 半導體裝置的製造方法 |
| US9293599B2 (en) | 2013-05-20 | 2016-03-22 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing the same |
| US9722091B2 (en) | 2014-09-12 | 2017-08-01 | Semiconductor Energy Laboratory Co., Ltd. | Method for manufacturing semiconductor device |
| TWI605587B (zh) | 2015-11-02 | 2017-11-11 | 聯華電子股份有限公司 | 半導體元件及其製造方法 |
| US10700212B2 (en) | 2016-01-28 | 2020-06-30 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, semiconductor wafer, module, electronic device, and manufacturing method thereof |
| WO2017182910A1 (ja) * | 2016-04-22 | 2017-10-26 | 株式会社半導体エネルギー研究所 | 半導体装置、及び半導体装置の作製方法 |
| US10685983B2 (en) | 2016-11-11 | 2020-06-16 | Semiconductor Energy Laboratory Co., Ltd. | Transistor, semiconductor device, and electronic device |
| WO2018092007A1 (ja) * | 2016-11-17 | 2018-05-24 | 株式会社半導体エネルギー研究所 | 半導体装置、および半導体装置の作製方法 |
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| WO2018211368A1 (ja) * | 2017-05-19 | 2018-11-22 | 株式会社半導体エネルギー研究所 | 半導体装置、および半導体装置の作製方法 |
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| WO2020031031A1 (ja) * | 2018-08-09 | 2020-02-13 | 株式会社半導体エネルギー研究所 | 半導体装置および半導体装置の作製方法 |
| US11426818B2 (en) | 2018-08-10 | 2022-08-30 | The Research Foundation for the State University | Additive manufacturing processes and additively manufactured products |
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| JP6310050B2 (ja) | 2018-04-11 |
| JP6023836B2 (ja) | 2016-11-09 |
| JP2013175711A (ja) | 2013-09-05 |
| JP2015146444A (ja) | 2015-08-13 |
| JP2018117144A (ja) | 2018-07-26 |
| JP6487088B2 (ja) | 2019-03-20 |
| US9006733B2 (en) | 2015-04-14 |
| JP2017098563A (ja) | 2017-06-01 |
| US20150214342A1 (en) | 2015-07-30 |
| US20130193493A1 (en) | 2013-08-01 |
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| US9997545B2 (en) | 2018-06-12 |
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