JP6059566B2 - 半導体装置の作製方法 - Google Patents
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Description
本実施の形態では、本発明の一態様である半導体装置、及びその作製方法について図面を参照して説明する。
本実施の形態では、実施の形態1に示すトランジスタと比較して、ゲート絶縁膜が異なるトランジスタの構造及び作製方法について、図1(A)乃至図1(C)及び図3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。本実施の形態に示すトランジスタ70は、酸化物半導体膜を介して対向する複数のゲート電極を有することを特徴とする。
本実施の形態では、実施の形態1乃至実施の形態3に示すトランジスタにおいて、酸化物半導体膜中に含まれる水素濃度を低減したトランジスタの作製方法について説明する。なお、本実施の形態に示す工程の一以上と、実施の形態1乃至実施の形態3に示すトランジスタの作製工程とが組み合わさればよく、全て組み合わせる必要はない。
上記実施の形態で一例を示したトランジスタを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、トランジスタを含む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。本実施の形態では、上記実施の形態で一例を示したトランジスタを用いた表示装置の例について、図5及び図6を用いて説明する。なお、図6(A)及び図6(B)は、図5(B)中でM−Nの一点鎖線で示した部位の断面構成を示す断面図である。
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、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。電子機器の一例である携帯情報端末について、図10を用いて説明する。
Claims (2)
- 基板上に、
トランジスタのチャネル形成領域を有する酸化物半導体膜と、
前記酸化物半導体膜上の第1の絶縁膜と、
前記第1の絶縁膜上の第2の絶縁膜と、を有し、
25℃において0.5重量%のフッ酸に対する前記第1の絶縁膜のエッチング速度は、10nm/分以下であり、且つ25℃において0.5重量%のフッ酸に対する前記第2の絶縁膜のエッチング速度よりも遅い半導体装置の作製方法であって、
前記第1の絶縁膜は、原料ガスとしてシランと一酸化二窒素を用い、シランに対する一酸化二窒素の量を100倍以上とし、圧力を100Pa以上250Pa以下とし、前記基板を300℃以上400℃以下としてプラズマCVD法によって成膜し、
前記第2の絶縁膜は、原料ガスとしてシランと一酸化二窒素を用い、圧力を100Pa以上250Pa以下とし、前記基板を180℃以上250℃以下とし、0.17W/cm2以上0.5W/cm2以下の電力を供給して原料ガスを分解しプラズマCVD法によって成膜し、
150℃以上450℃以下の温度で加熱処理を行うことを特徴とする半導体装置の作製方法。 - 請求項1において、
前記第1の絶縁膜は、電子スピン共鳴法によって計測される信号において、g値が2.001付近におけるスピン密度が2×1015spins/cm3以下または1×1015spins/cm3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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JP2017218132A Active JP6630334B2 (ja) | 2012-04-13 | 2017-11-13 | 半導体装置 |
JP2019221353A Active JP6877519B2 (ja) | 2012-04-13 | 2019-12-06 | 半導体装置 |
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JP2021074867A Active JP7095154B2 (ja) | 2012-04-13 | 2021-04-27 | 半導体装置 |
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JP6877519B2 (ja) | 2021-05-26 |
US20130270549A1 (en) | 2013-10-17 |
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US10170599B2 (en) | 2019-01-01 |
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US20160247903A1 (en) | 2016-08-25 |
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JP2014007381A (ja) | 2014-01-16 |
KR102355315B1 (ko) | 2022-01-24 |
JP2017059851A (ja) | 2017-03-23 |
KR20130116204A (ko) | 2013-10-23 |
JP2018061045A (ja) | 2018-04-12 |
US9337342B2 (en) | 2016-05-10 |
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