JP5244885B2 - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP5244885B2 JP5244885B2 JP2010236657A JP2010236657A JP5244885B2 JP 5244885 B2 JP5244885 B2 JP 5244885B2 JP 2010236657 A JP2010236657 A JP 2010236657A JP 2010236657 A JP2010236657 A JP 2010236657A JP 5244885 B2 JP5244885 B2 JP 5244885B2
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- film
- insulating film
- tft
- semiconductor
- silicon
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
- C23C14/0036—Reactive sputtering
- C23C14/0057—Reactive sputtering using reactive gases other than O2, H2O, N2, NH3 or CH4
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02266—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by physical ablation of a target, e.g. sputtering, reactive sputtering, physical vapour deposition or pulsed laser deposition
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Description
で希釈したガスである。また、スパッタの条件(スパッタ用のガス、ガス流量、成膜圧力、基板の温度、成膜電力等)は、ターゲットの大きさ、基板の寸法、窒化酸化シリコン膜(SiNX BY OZ )の膜厚、窒化酸化シリコン膜(SiNX BY OZ )の膜質等を考慮して実施者が適宜決定すればよい。また、RF電力に代えてDC電力を使用することも可能である。
こうして得られた窒化酸化シリコン膜(SiNX BY OZ )は、ボロン元素を0.1〜50atoms %含有しているため高い熱伝導性を有しており、半導体装置の熱による特性劣化を防止する効果を有している。さらに、この窒化酸化シリコン膜はナトリウム等の可動イオンに対してブロッキング効果を有するので、基板等からこれらのイオンが半導体装置中、特にチャネル形成領域に侵入することを防止する効果も有している。
(図5(B))本実施例では制御絶縁膜211として酸化シリコン膜を用いたが、酸化シリコン膜に代えて本発明のボロン元素を含む窒化酸化シリコン(SiNX BY OZ )を用いて半導体装置の熱による特性劣化を防止する構成としてもよい。
こうして得られた窒化酸化シリコン(SiNX BY OZ )502は、ボロン元素を1〜50atoms %含有しているため高い熱伝導性を有しており、半導体装置の熱による特性劣化を防止する効果を有している。下地膜503はプラズマCVD法やスパッタ法で形成すれば良く、基板501からTFTに有害な不純物が半導体層へ拡散することを防ぐために設けるものである。従って、ボロン元素を含む窒化酸化シリコン(SiNX BY OZ )からなる下地膜502を20〜100nm、代表的には50nmの厚さに形成し、さらに窒化酸化シリコン膜からなる下地膜503を50〜500nm、代表的には150〜200nmの厚さに積層形成すれば良かった。
その結果、TFTの特性バラツキを発生させる要因の一つをなくすことができた。
)
の熱処理を行い、結晶質シリコン膜707を形成した。この結晶化の過程では、ニッケルが接した非晶質シリコン膜の部分が最初に結晶化し、そこから横方向へと結晶化が進行する。こうして形成された結晶質シリコン膜707は棒状または針状の結晶が集合して成り、その各々の結晶は巨視的にはある特定の方向性をもって成長しているため、結晶性が揃っているという利点がある。
、鉛(Pb)、コバルト(Co)、白金(Pt)、銅(Cu)、金(Au)、といった元素を用いても良い。
を用いて半導体装置の熱による特性劣化を防止した。なお、膜剥がれが生じないなら窒化酸化シリコン(SiNX BY OZ )に接して非晶質シリコン膜を形成してもよい。そして実施例5で示した技術を用い、結晶質半導体膜が形成され、これをTFTの活性層にするために、島状にパターニングして半導体層902、903を形成した。そして、半導体層902、903を覆って、ゲート絶縁膜904を、酸化珪素を主成分とする膜で形成した。本実施例では、プラズマCVD法で窒化酸化シリコン膜を70nmの厚さで形成した。(図14(A))
即ち、現在市場に流通している全ての半導体回路に適用できる。例えば、ワンチップ上に集積化されたRISCプロセッサ、ASICプロセッサ等のマイクロプロセッサに適用しても良いし、液晶用ドライバー回路(D/Aコンバータ、γ補正回路、信号分割回路等)に代表される信号処理回路や携帯機器(携帯電話、PHS、モバイルコンピュータ)用の高周波回路に適用しても良い。
において、10は基板、11は画素部、12はソース側駆動回路、13はゲート側駆動回路であり、それぞれの駆動回路は配線14〜16を経てFPC17に至り、外部機器へと接続される。
勿論、単色発光のEL表示装置とすることもできる。
や絶縁膜28のエッチング時(EL層形成前の開口部の形成時)に形成しておけば良い。また、絶縁膜28をエッチングする際に、層間絶縁膜26まで一括でエッチングしても良い。この場合、層間絶縁膜26と絶縁膜28が同じ樹脂材料であれば、コンタクトホールの形状を良好なものとすることができる。
本発明は表示部2402やその他の信号制御回路に適用することができる。
Claims (2)
- 絶縁表面上にゲート電極を形成し、
前記ゲート電極上にゲート絶縁膜を形成し、
前記ゲート絶縁膜上に半導体膜を形成する半導体装置の作製方法であって、
前記ゲート絶縁膜は、ボロンと、窒素と、酸素と、シリコンと、を含む絶縁膜を有し、
当該絶縁膜は、酸化窒素ガスを含む雰囲気中において、ボロンが添加された半導体ターゲットを用いたスパッタリング法により形成されることを特徴とする半導体装置の作製方法。 - 絶縁表面上にゲート電極を形成し、
前記ゲート電極上にゲート絶縁膜を形成し、
前記ゲート絶縁膜上に半導体膜を形成する半導体装置の作製方法であって、
前記ゲート絶縁膜は、ボロンと、窒素と、酸素と、シリコンと、を含む絶縁膜を有し、
当該絶縁膜は、ボロンを含むガスと酸化窒素ガスとを含む雰囲気中において、半導体ターゲットを用いたスパッタリング法により形成されることを特徴とする半導体装置の作製方法。
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US10967536B2 (en) * | 2011-02-17 | 2021-04-06 | Sawstop Holding Llc | Blade guard for a table saw |
JP3976089B2 (ja) * | 2002-08-09 | 2007-09-12 | 株式会社リコー | 半導体集積回路装置及びその製造方法 |
US7300829B2 (en) * | 2003-06-02 | 2007-11-27 | Applied Materials, Inc. | Low temperature process for TFT fabrication |
WO2005041310A1 (en) * | 2003-10-28 | 2005-05-06 | Semiconductor Energy Laboratory Co., Ltd. | Display device and method for manufacturing the same, and television receiver |
US7223641B2 (en) * | 2004-03-26 | 2007-05-29 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, method for manufacturing the same, liquid crystal television and EL television |
JP4628040B2 (ja) * | 2004-08-20 | 2011-02-09 | 株式会社半導体エネルギー研究所 | 半導体素子を備えた表示装置の製造方法 |
US7858451B2 (en) | 2005-02-03 | 2010-12-28 | Semiconductor Energy Laboratory Co., Ltd. | Electronic device, semiconductor device and manufacturing method thereof |
EP1998374A3 (en) | 2005-09-29 | 2012-01-18 | Semiconductor Energy Laboratory Co, Ltd. | Semiconductor device having oxide semiconductor layer and manufacturing method thereof |
US7642114B2 (en) | 2006-07-19 | 2010-01-05 | Semiconductor Energy Laboratory Co., Ltd. | Micro electro mechanical device and manufacturing method thereof |
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US20050023579A1 (en) | 2005-02-03 |
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US7491655B2 (en) | 2009-02-17 |
JP2011049572A (ja) | 2011-03-10 |
US6891236B1 (en) | 2005-05-10 |
JP2011101029A (ja) | 2011-05-19 |
JP5298110B2 (ja) | 2013-09-25 |
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