JP2012238826A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2012238826A JP2012238826A JP2011142780A JP2011142780A JP2012238826A JP 2012238826 A JP2012238826 A JP 2012238826A JP 2011142780 A JP2011142780 A JP 2011142780A JP 2011142780 A JP2011142780 A JP 2011142780A JP 2012238826 A JP2012238826 A JP 2012238826A
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- Prior art keywords
- oxide semiconductor
- oxide
- electrode
- film
- oxygen
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Abstract
【解決手段】ゲート絶縁層と、ゲート絶縁層の一方の面に接する第1のゲート電極と、ゲート絶縁層の他方の面に接し、第1のゲート電極と重畳する領域に設けられた酸化物半導体層と、酸化物半導体層と接するソース電極、ドレイン電極、及び酸化物絶縁層と、の積層構造を有し、酸化物半導体層の窒素濃度は2×1019atoms/cm3以下であり、ソース電極及びドレイン電極は、タングステン、白金及びモリブデンのいずれか一又は複数を含む半導体装置を提供する。
【選択図】図1
Description
本実施の形態では、本発明の一態様の半導体装置の構成及び作製方法について図1〜図4を用いて説明する。
実施の形態1で例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等のカメラ、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。上記実施の形態で説明した液晶表示装置を具備する電子機器の例について説明する。
ΔE=(酸素移動後のエネルギー)−(酸素移動前のエネルギー)
=E(酸素が1つ欠損したIGZO結晶)+E(酸素が格子間に入った場合の電極の結晶)−{E(IGZO結晶)+E(電極の結晶)}
ガラス基板上に、In−Ga−Zn−O系金属酸化物ターゲット(原子数比In:Ga:Zn=1:1:1)を用いて、基板とターゲットとの間の距離を60mm、圧力0.4Pa、直流(DC)電源0.5kW、酸素(酸素流量40sccm)雰囲気下、基板温度200℃でスパッタリング法による成膜を行い、厚さ300nmの酸化物半導体膜を形成した。
ガラス基板上に、In−Ga−Zn−O系金属酸化物ターゲット(原子数比In:Ga:Zn=1:1:1)を用いて、基板とターゲットとの間の距離を60mm、圧力0.4Pa、直流(DC)電源0.5kW、アルゴン及び酸素(アルゴン:酸素=30sccm:15sccm)混合雰囲気下、基板温度200℃でスパッタリング法による成膜を行い、厚さ100nmの酸化物半導体膜を形成した。
502 ゲート絶縁層
507 酸化物絶縁層
511 第1のゲート電極
513 酸化物半導体層
513a 酸化物半導体膜
513b 酸化物半導体層
515a 第1の電極
515b 第2の電極
516a バッファ層
516b バッファ層
516c バッファ層
516d バッファ層
519 第2のゲート電極
550 トランジスタ
551a トランジスタ
551b トランジスタ
552 トランジスタ
2700 電子書籍
2701 筐体
2703 筐体
2705 表示部
2707 表示部
2711 軸部
2721 電源
2723 操作キー
2725 スピーカー
2800 筐体
2801 筐体
2802 表示パネル
2803 スピーカー
2804 マイクロフォン
2805 操作キー
2806 ポインティングデバイス
2807 カメラ用レンズ
2808 外部接続端子
2810 太陽電池セル
2811 外部メモリスロット
3001 本体
3002 筐体
3003 表示部
3004 キーボード
3021 本体
3022 スタイラス
3023 表示部
3024 操作ボタン
3025 外部インターフェイス
3051 本体
3053 接眼部
3054 操作スイッチ
3055 表示部(B)
3056 バッテリー
3057 表示部(A)
4001 基板
4002 画素部
4003 信号線駆動回路
4004 走査線駆動回路
4005 シール材
4006 基板
4008 液晶層
4010 トランジスタ
4011 トランジスタ
4013 液晶素子
4015 接続端子電極
4016 端子電極
4018 FPC
4019 異方性導電膜
4021 絶縁層
4030 第1の電極
4031 第2の電極
4032 絶縁膜
4033 絶縁膜
4041 ゲート電極
4042 酸化物半導体層
4043 カラーフィルタ層
4045 平坦化膜
4048 遮光層
4510 隔壁
4511 電界発光層
4513 発光素子
4514 充填材
4612 キャビティ
4613 球形粒子
4614 充填材
4615a 黒色領域
4615b 白色領域
9600 テレビジョン装置
9601 筐体
9603 表示部
9605 スタンド
Claims (6)
- ゲート絶縁層と、
ゲート絶縁層の一方の面に接する第1のゲート電極と、
ゲート絶縁層の他方の面に接し、前記第1のゲート電極と重畳する酸化物半導体層と、
前記酸化物半導体層と接するソース電極、ドレイン電極、及び酸化物絶縁層と、を有し、
前記酸化物半導体層の窒素濃度は、2×1019atoms/cm3以下であり、
前記ソース電極及び前記ドレイン電極は、タングステン、白金及びモリブデンのいずれか一又は複数を含む半導体装置。 - ゲート絶縁層と、
ゲート絶縁層の一方の面に接する第1のゲート電極と、
ゲート絶縁層の他方の面に接し、前記第1のゲート電極と重畳する酸化物半導体層と、
前記酸化物半導体層と接するバッファ層及び酸化物絶縁層と、
前記バッファ層を介して、前記酸化物半導体層と電気的に接続するソース電極及びドレイン電極と、を有し、
前記酸化物半導体層の窒素濃度は、2×1019atoms/cm3以下であり、
前記バッファ層の窒素濃度は、2×1019atoms/cm3以下であり、
前記ソース電極及び前記ドレイン電極は、タングステン、白金及びモリブデンのいずれか一又は複数を含む半導体装置。 - 請求項1又は請求項2において、
前記ゲート絶縁層は、酸化ガリウム、酸化アルミニウム、酸化ガリウムアルミニウム、及び酸化アルミニウムガリウムのいずれか一又は複数が含まれる半導体装置。 - 請求項1乃至請求項3のいずれか一項において、
前記酸化物絶縁層は、酸化ガリウム、酸化アルミニウム、酸化ガリウムアルミニウム、及び酸化アルミニウムガリウムのいずれか一又は複数が含まれる半導体装置。 - 請求項1乃至請求項4のいずれか一項において、
前記酸化物半導体層の膜厚が、3nm以上30nm以下である半導体装置。 - 請求項1乃至請求項5のいずれか一項において、
前記酸化物絶縁層を介して、前記酸化物半導体層及び前記第1のゲート電極と重畳する第2のゲート電極を有する半導体装置。
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US20140299873A1 (en) * | 2013-04-05 | 2014-10-09 | Semiconductor Energy Laboratory Co., Ltd. | Single-crystal oxide semiconductor, thin film, oxide stack, and formation method thereof |
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JP2021061433A (ja) | 2021-04-15 |
TW202021135A (zh) | 2020-06-01 |
JP2019071485A (ja) | 2019-05-09 |
JP6818918B2 (ja) | 2021-01-27 |
JP7013559B2 (ja) | 2022-01-31 |
TW201216471A (en) | 2012-04-16 |
TWI600156B (zh) | 2017-09-21 |
TWI713226B (zh) | 2020-12-11 |
TW201703263A (zh) | 2017-01-16 |
KR20190003856A (ko) | 2019-01-09 |
JP2020107889A (ja) | 2020-07-09 |
JP5856395B2 (ja) | 2016-02-09 |
TWI772241B (zh) | 2022-07-21 |
JP2018029196A (ja) | 2018-02-22 |
JP2022044686A (ja) | 2022-03-17 |
TWI684279B (zh) | 2020-02-01 |
JP2016086179A (ja) | 2016-05-19 |
TW202218167A (zh) | 2022-05-01 |
TW202107716A (zh) | 2021-02-16 |
KR20120003390A (ko) | 2012-01-10 |
US20220123150A1 (en) | 2022-04-21 |
TWI763085B (zh) | 2022-05-01 |
US20120001179A1 (en) | 2012-01-05 |
JP6479921B2 (ja) | 2019-03-06 |
JP6657440B2 (ja) | 2020-03-04 |
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