JP2012209546A - 半導体装置の作製方法 - Google Patents
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Abstract
【解決手段】酸化物半導体膜を含むトランジスタの作製工程において、酸化物半導体膜に酸素ドープ処理を行い、その後、酸化物半導体膜及び酸化物半導体膜上に設けられた酸化アルミニウム膜に対して熱処理を行うことで、化学量論的組成比を超える酸素を含む領域を有する酸化物半導体膜を形成する。該酸化物半導体膜を用いたトランジスタは、バイアス−熱ストレス試験(BT試験)前後においてもトランジスタのしきい値電圧の変化量が低減されており、信頼性の高いトランジスタとすることができる。
【選択図】図1
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乃至図3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。
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他の一形態を、図4乃至図6を用いて説明する。なお、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。また同じ箇所の詳細な説明は省略する。
実施の形態1または2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。
実施の形態1または2で例示したトランジスタを用いて、対象物の情報を読み取るイメージセンサ機能を有する半導体装置を作製することができる。
実施の形態1または2で例示したトランジスタは、複数のトランジスタを積層する集積回路を有する半導体装置に好適に用いることができる。本実施の形態では、半導体装置の一例として、記憶媒体(メモリ素子)の例を示す。
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半導体装置を具備する電子機器の例について説明する。
108 ゲート絶縁膜
110 ゲート電極層
116 チャネル形成領域
120 不純物領域
124 金属化合物領域
128 絶縁膜
130 絶縁膜
140 トランジスタ
142a ドレイン電極層
142b ソース電極層
144 酸化物半導体膜
146 ゲート絶縁膜
148a ゲート電極層
148b 電極層
150 絶縁膜
152 絶縁膜
162 トランジスタ
164 容量素子
185 基板
400 基板
401 ゲート電極層
402 ゲート絶縁膜
403 酸化物半導体膜
405a ソース電極層
405b ドレイン電極層
407 絶縁膜
410 トランジスタ
420 トランジスタ
421 酸素
502 ゲート絶縁膜
506 下地絶縁膜
510 トランジスタ
520 トランジスタ
601 基板
602 フォトダイオード
606a 半導体膜
606b 半導体膜
606c 半導体膜
608 接着層
613 基板
631 絶縁膜
632 絶縁膜
633 層間絶縁膜
634 層間絶縁膜
640 トランジスタ
641a 電極層
641b 電極層
642 電極層
643 導電層
645 ゲート電極層
656 トランジスタ
658 フォトダイオードリセット信号線
659 ゲート信号線
671 フォトセンサ出力信号線
672 フォトセンサ基準信号線
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
3056 バッテリー
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 接続端子電極層
4016 端子電極層
4018 FPC
4019 異方性導電膜
4020 絶縁膜
4021 絶縁膜
4023 絶縁膜
4024 絶縁膜
4030 電極層
4031 電極層
4032 絶縁膜
4033 絶縁膜
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
9601 筐体
9603 表示部
9605 スタンド
Claims (5)
- 酸化シリコン膜を形成する工程と、
前記酸化シリコン膜に接する酸化物半導体膜を形成する工程と、
前記酸化物半導体膜上に酸化アルミニウム膜を形成する工程と、
前記酸化物半導体膜に酸素ドープ処理を行い、前記酸化物半導体膜に酸素を供給して前記酸化物半導体膜に化学量論的組成比より酸素が多い領域を形成する工程と、
前記酸素を供給した酸化物半導体膜及び前記酸化アルミニウム膜に対して熱処理を行う工程と、を含む半導体装置の作製方法。 - 酸化シリコン膜を形成する工程と、
前記酸化シリコン膜に接する酸化物半導体膜を形成する工程と、
前記酸化物半導体膜に第1の熱処理を行って、前記酸化物半導体膜中の水素原子を除去する工程と、
前記酸化物半導体膜に酸素ドープ処理を行い、前記酸化物半導体膜に酸素を供給して前記酸化物半導体膜に化学量論的組成比より酸素が多い領域を形成する工程と、
前記酸化物半導体膜上に酸化アルミニウム膜を形成し、第2の熱処理を行う工程と、を含む半導体装置の作製方法。 - 請求項1または2において、
前記酸化シリコン膜を形成後に、大気解放せずに連続的に前記酸化物半導体膜を形成する半導体装置の作製方法。 - 請求項1乃至3のいずれか一において、
前記酸素ドープ処理によって導入された前記酸化物半導体膜における酸素濃度のピークを1×1018/cm3以上3×1021/cm3以下とする半導体装置の作製方法。 - 請求項1乃至4のいずれか一において、
前記酸化物半導体膜と前記酸化アルミニウム膜との間に、酸化物絶縁膜を形成する半導体装置の作製方法。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014179596A (ja) * | 2013-02-12 | 2014-09-25 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
| JP2015070223A (ja) * | 2013-09-30 | 2015-04-13 | パナソニック株式会社 | 薄膜半導体装置及びその製造方法 |
| KR20210035343A (ko) * | 2013-05-20 | 2021-03-31 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
| JP2023016908A (ja) * | 2014-05-30 | 2023-02-02 | 株式会社半導体エネルギー研究所 | 半導体装置 |
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- 2012-03-08 KR KR1020120023872A patent/KR102084921B1/ko not_active Expired - Fee Related
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| JP2014179596A (ja) * | 2013-02-12 | 2014-09-25 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
| KR20210035343A (ko) * | 2013-05-20 | 2021-03-31 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
| KR102376226B1 (ko) * | 2013-05-20 | 2022-03-17 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
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| JP2023016908A (ja) * | 2014-05-30 | 2023-02-02 | 株式会社半導体エネルギー研究所 | 半導体装置 |
| JP7455935B2 (ja) | 2014-05-30 | 2024-03-26 | 株式会社半導体エネルギー研究所 | 半導体装置 |
| US12495615B2 (en) | 2014-05-30 | 2025-12-09 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, manufacturing method thereof, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210110279A (ko) | 2021-09-07 |
| US9362136B2 (en) | 2016-06-07 |
| JP6046358B2 (ja) | 2016-12-14 |
| KR20200023346A (ko) | 2020-03-04 |
| JP2017022390A (ja) | 2017-01-26 |
| TW201630079A (zh) | 2016-08-16 |
| JP2021007158A (ja) | 2021-01-21 |
| JP2018082196A (ja) | 2018-05-24 |
| JP2019220697A (ja) | 2019-12-26 |
| KR20240041295A (ko) | 2024-03-29 |
| TWI658516B (zh) | 2019-05-01 |
| TWI602249B (zh) | 2017-10-11 |
| US8828794B2 (en) | 2014-09-09 |
| US10002775B2 (en) | 2018-06-19 |
| KR20120104097A (ko) | 2012-09-20 |
| TW201730985A (zh) | 2017-09-01 |
| US20120231580A1 (en) | 2012-09-13 |
| US20140370657A1 (en) | 2014-12-18 |
| KR102734788B1 (ko) | 2024-11-28 |
| JP6268244B2 (ja) | 2018-01-24 |
| US11387116B2 (en) | 2022-07-12 |
| KR102298155B1 (ko) | 2021-09-07 |
| KR102084921B1 (ko) | 2020-03-05 |
| JP6767550B2 (ja) | 2020-10-14 |
| US10615052B2 (en) | 2020-04-07 |
| TWI624878B (zh) | 2018-05-21 |
| TW201250859A (en) | 2012-12-16 |
| TWI541904B (zh) | 2016-07-11 |
| US20180277392A1 (en) | 2018-09-27 |
| TW201839861A (zh) | 2018-11-01 |
| US20200203183A1 (en) | 2020-06-25 |
| US20160284564A1 (en) | 2016-09-29 |
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