JP5389750B2 - 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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- JP5389750B2 JP5389750B2 JP2010148064A JP2010148064A JP5389750B2 JP 5389750 B2 JP5389750 B2 JP 5389750B2 JP 2010148064 A JP2010148064 A JP 2010148064A JP 2010148064 A JP2010148064 A JP 2010148064A JP 5389750 B2 JP5389750 B2 JP 5389750B2
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- oxide semiconductor
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- semiconductor layer
- thin film
- film transistor
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Description
半導体装置及び半導体装置の作製方法を図1乃至図3を用いて説明する。
半導体装置及び半導体装置の作製方法を、図26を用いて説明する。実施の形態1と同一部分又は同様な機能を有する部分、及び工程は、実施の形態1と同様に行うことができ、繰り返しの説明は省略する。
半導体装置及び半導体装置の作製方法を、図27を用いて説明する。実施の形態1と同一部分又は同様な機能を有する部分、及び工程は、実施の形態1と同様に行うことができ、繰り返しの説明は省略する。
薄膜トランジスタを含む半導体装置の作製工程について、図4乃至図8を用いて説明する。
半導体装置の一例である表示装置において、同一基板上に少なくとも駆動回路の一部と、画素部に配置する薄膜トランジスタを作製する例について以下に説明する。
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て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。
半導体装置として電子ペーパーの例を示す。
半導体装置として発光表示装置の例を示す。表示装置の有する表示素子としては、ここではエレクトロルミネッセンスを利用する発光素子を用いて示す。エレクトロルミネッセンスを利用する発光素子は、発光材料が有機化合物であるか、無機化合物であるかによって区別され、一般的に、前者は有機EL素子、後者は無機EL素子と呼ばれている。
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、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22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。
Claims (6)
- 基板上方に、ゲート電極層を形成する工程と、
前記ゲート電極層上方に、ゲート絶縁層を形成する工程と、
前記ゲート絶縁層上方に、第1の酸化物半導体層と、第2の酸化物半導体層と、を形成する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、不活性気体雰囲気下で加熱する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、酸素を含む雰囲気下で冷却する工程と、
前記第2の酸化物半導体層上方に、ソース電極層及びドレイン電極層を形成する工程と、
前記第1の酸化物半導体層の一部と接する領域と、前記第2の酸化物半導体層の一部と接する領域と、を有する酸化物絶縁層を形成する工程と、を有し、
前記第1の酸化物半導体層は、In、Ga、及びZnを含み、
前記第2の酸化物半導体層は、In、Ga、及びZnを含むことを特徴とする半導体装置の作製方法。 - 基板上方に、ゲート電極層を形成する工程と、
前記ゲート電極層上方に、ゲート絶縁層を形成する工程と、
前記ゲート絶縁層上方に、第1の酸化物半導体層と、第2の酸化物半導体層と、を形成する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、不活性気体雰囲気下で加熱する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、酸素を含む雰囲気下で冷却する工程と、を有し、
前記第1の酸化物半導体層は、In、Ga、及びZnを含み、
前記第2の酸化物半導体層は、In、Ga、及びZnを含むことを特徴とする半導体装置の作製方法。 - 基板上方に、ゲート電極層を形成する工程と、
前記ゲート電極層上方に、ゲート絶縁層を形成する工程と、
前記ゲート絶縁層上方に、第1の酸化物半導体層と、第2の酸化物半導体層と、を形成する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層に、脱水化又は脱水素化のための加熱処理を行う工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、酸素を含む雰囲気下で冷却する工程と、
前記第2の酸化物半導体層上方に、ソース電極層及びドレイン電極層を形成する工程と、
前記第1の酸化物半導体層の一部と接する領域と、前記第2の酸化物半導体層の一部と接する領域と、を有する酸化物絶縁層を形成する工程と、を有し、
前記第1の酸化物半導体層は、In、Ga、及びZnを含み、
前記第2の酸化物半導体層は、In、Ga、及びZnを含むことを特徴とする半導体装置の作製方法。 - 基板上方に、ゲート電極層を形成する工程と、
前記ゲート電極層上方に、ゲート絶縁層を形成する工程と、
前記ゲート絶縁層上方に、第1の酸化物半導体層と、第2の酸化物半導体層と、を形成する工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層に、脱水化又は脱水素化のための加熱処理を行う工程と、
前記第1の酸化物半導体層及び前記第2の酸化物半導体層を、酸素を含む雰囲気下で冷却する工程と、を有し、
前記第1の酸化物半導体層は、In、Ga、及びZnを含み、
前記第2の酸化物半導体層は、In、Ga、及びZnを含むことを特徴とする半導体装置の作製方法。 - 請求項1又は2において、
前記不活性気体は、窒素または希ガスであることを特徴とする半導体装置の作製方法。 - 請求項1乃至5のいずれか一項において、
前記第2の酸化物半導体層は、ナノクリスタルを含むことを特徴とする半導体装置の作製方法。
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