JP6134598B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6134598B2 JP6134598B2 JP2013147554A JP2013147554A JP6134598B2 JP 6134598 B2 JP6134598 B2 JP 6134598B2 JP 2013147554 A JP2013147554 A JP 2013147554A JP 2013147554 A JP2013147554 A JP 2013147554A JP 6134598 B2 JP6134598 B2 JP 6134598B2
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Description
本実施の形態では、半導体装置の一形態を、図1及び図2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、酸化物半導体層を有するボトムゲート型のトランジスタを示す。
本実施の形態では、実施の形態1に示したトランジスタ100の作製方法の一形態を、図3及び図4を用いて説明する。
本実施の形態では、実施の形態1及び2に示したトランジスタ100の構造とは異なるトランジスタ200の作製方法の一形態を、図5乃至図7を用いて説明する。
本実施の形態では、実施の形態1乃至3で示した半導体装置とは異なる構造の半導体装置について、図8を参照して説明する。本実施の形態では半導体装置の一形態として、実施の形態1乃至3で示したボトムゲート構造のトランジスタとは異なる、ボトムゲート構造のトランジスタ300及び320に示す。なお、実施の形態1乃至実施の形態3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乃至実施の形態3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。
本実施の形態では、実施の形態1乃至実施の形態4のトランジスタに適用可能な酸化物半導体層の一例について、図9乃至図11を用いて説明する。
実施の形態1乃至5に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又は全体を、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乃至5に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。
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、テレビジョン装置(テレビ、又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、携帯型ゲーム機、携帯情報端末、音響再生装置、遊技機(パチンコ機、スロットマシン等)、ゲーム筐体が挙げられる。これらの電子機器の具体例を図16に示す。
101 基板
102 第1の導電膜
103 第1の絶縁膜
103a 絶縁層
103b 絶縁層
104 酸化物半導体膜
104a 第1の酸化物半導体層
104b 第2の酸化物半導体層
104c 第3の酸化物半導体層
105a 第2の導電膜
105b 第2の導電膜
106 第2の絶縁膜
106a 絶縁層
106b 絶縁層
110 フォトレジスト膜
111 エッチャント
200 トランジスタ
201 基板
202 第1の導電膜
203 第1の絶縁膜
203a 絶縁層
203b 絶縁層
204 酸化物半導体膜
204a 第1の酸化物半導体層
204b 第2の酸化物半導体層
204c 第3の酸化物半導体層
205a 第2の導電膜
205b 第2の導電膜
206 第2の絶縁膜
206a 絶縁層
206b 絶縁層
210 フォトレジスト膜
211 エッチャント
300 トランジスタ
301 基板
302 第1の導電膜
303 第1の絶縁膜
303a 絶縁層
303b 絶縁層
304 酸化物半導体膜
304a 第1の酸化物半導体層
304b 第2の酸化物半導体層
304c 第3の酸化物半導体層
305a 第2の導電膜
305b 第2の導電膜
306 第2の絶縁膜
306a 絶縁層
306b 絶縁層
320 トランジスタ
321 基板
322 第1の導電膜
323 第1の絶縁膜
323a 絶縁層
323b 絶縁層
324 酸化物半導体膜
324a 第1の酸化物半導体層
324b 第2の酸化物半導体層
324c 第3の酸化物半導体層
325a 第2の導電膜
325b 第2の導電膜
326 第2の絶縁膜
326a 絶縁層
326b 絶縁層
500 基板
501 ゲート絶縁層
502 ゲート絶縁層
504 層間絶縁層
505 カラーフィルタ層
506 絶縁層
507 隔壁
510 トランジスタ
511a ゲート電極層
511b ゲート電極層
512 酸化物半導体膜
512a 第1の酸化物半導体層
512b 第2の酸化物半導体層
512c 第3の酸化物半導体層
513a 導電層
513b 導電層
520 容量素子
521a 導電層
521b 導電層
522 酸化物半導体膜
522a 第1の酸化物半導体層
522b 第2の酸化物半導体層
522c 第3の酸化物半導体層
523 導電層
525 絶縁層
530 配線層交差部
533 導電層
540 発光素子
541 電極層
542 電界発光層
543 電極層
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
632 絶縁層
633 層間絶縁層
634 層間絶縁層
640 トランジスタ
641a 電極層
641b 電極層
642 電極層
643 導電層
645 導電層
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
2000 基板
2001 スパッタリング粒子
2002 スパッタリングターゲット
2003 チャンバ
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
4020a ゲート絶縁層
4020b ゲート絶縁層
4031 電極層
4032a 絶縁層
4032b 絶縁層
4033 絶縁層
4034 電極層
4035 スペーサ
4038 絶縁層
4040 平坦化絶縁層
4042 絶縁層
9000 テーブル
9001 筐体
9002 脚部
9003 表示部
9004 表示ボタン
9005 電源コード
9033 留め具
9034 スイッチ
9035 電源スイッチ
9036 スイッチ
9038 操作スイッチ
9100 テレビジョン装置
9101 筐体
9103 表示部
9105 スタンド
9107 表示部
9109 操作キー
9110 リモコン操作機
9201 本体
9202 筐体
9203 表示部
9204 キーボード
9205 外部接続ポート
9206 ポインティングデバイス
9630 筐体
9631 表示部
9631a 表示部
9631b 表示部
9632a 領域
9632b 領域
9633 太陽電池
9634 充放電制御回路
9635 バッテリー
9636 DCDCコンバータ
9637 コンバータ
9638 操作キー
9639 ボタン
Claims (3)
- 第1の絶縁層上の第1の酸化物半導体層と、
前記第1の酸化物半導体層上の第2の酸化物半導体層と、
前記第2の酸化物半導体層上の第3の酸化物半導体層と、
前記第3の酸化物半導体層上の第2の絶縁層と、を有し、
前記第2の酸化物半導体層は、トランジスタのチャネル形成領域を有し、
前記第2の酸化物半導体層の端部は、前記第1の酸化物半導体層の端部よりも内側に設けられ、
前記第1の酸化物半導体層の端部及び前記第2の酸化物半導体層の端部は、前記第3の酸化物半導体層に接し、
前記第2の酸化物半導体層の伝導帯下端のエネルギー準位は、前記第1の酸化物半導体層の伝導帯下端のエネルギー準位よりも低く、
前記第2の酸化物半導体層の伝導帯下端のエネルギー準位は、第3の酸化物半導体層の伝導帯下端のエネルギー準位よりも低く、
前記第1の酸化物半導体層は、少なくともインジウム及びガリウムを含み、かつ、インジウム含有量はガリウム含有量以下であり、
前記第3の酸化物半導体層は、少なくともインジウム及びガリウムを含み、かつ、インジウム含有量はガリウム含有量以下であり、
前記第2の酸化物半導体層は、少なくともインジウム及びガリウムを含み、インジウム含有量はガリウム含有量よりも大きいことを特徴とする半導体装置。 - 請求項1において、
前記第2の酸化物半導体層の伝導帯下端のエネルギー準位とフェルミ準位との差は、前記第1の酸化物半導体層の伝導帯下端のエネルギー準位とフェルミ準位との差よりも小さく、
前記第2の酸化物半導体層の伝導帯下端のエネルギー準位とフェルミ準位との差は、前記第3の酸化物半導体層の伝導帯下端のエネルギー準位とフェルミ準位との差よりも小さいことを特徴とする半導体装置。 - 請求項1又は請求項2において、
前記第1の酸化物半導体層の伝導帯下端のエネルギー準位と、前記第2の酸化物半導体層の伝導帯下端のエネルギー準位との差は、0.05eV以上であり、
前記第3の酸化物半導体層の伝導帯下端のエネルギー準位と、前記第2の酸化物半導体層の伝導帯下端のエネルギー準位との差は、0.05eV以上であることを特徴とする半導体装置。
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| KR20190032340A (ko) | 2019-03-27 |
| US9583634B2 (en) | 2017-02-28 |
| US20140034945A1 (en) | 2014-02-06 |
| JP2014045173A (ja) | 2014-03-13 |
| US20150115262A1 (en) | 2015-04-30 |
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