JP6124540B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP6124540B2 JP6124540B2 JP2012201469A JP2012201469A JP6124540B2 JP 6124540 B2 JP6124540 B2 JP 6124540B2 JP 2012201469 A JP2012201469 A JP 2012201469A JP 2012201469 A JP2012201469 A JP 2012201469A JP 6124540 B2 JP6124540 B2 JP 6124540B2
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- Prior art keywords
- layer
- oxide semiconductor
- region
- transistor
- insulating layer
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- 229910052720 vanadium Inorganic materials 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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Description
本実施の形態では、本発明の一態様の半導体装置の基本的な構成及び作製方法について図面を用いて説明する。図1に本発明の一態様の半導体装置を示す。図1(A)は本発明の一態様であるトランジスタの上面図を示しており、図1(B)は図1(A)の一点鎖線A1−A2における断面図である。
本実施の形態では、実施の形態1に示す半導体装置とは異なる態様の半導体装置について示す。なお、本実施の形態では、実施の形態1と同様の箇所については同様の符号を付し、詳細な説明は省略する。
本実施の形態では、実施の形態1及び実施の形態2に示すトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置の一例を、図面を用いて説明する。なお、本実施の形態の半導体装置は、トランジスタ162として実施の形態1に記載のトランジスタを適用して構成される。トランジスタ162としては、実施の形態1及び実施の形態2で示すトランジスタのいずれの構造も適用することができる。
本実施の形態においては、実施の形態1及び実施の形態2に示すトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置について、実施の形態3に示した構成と異なる構成について、図9及び図10を用いて説明を行う。なお、本実施の形態の半導体装置は、トランジスタ162として実施の形態1及び実施の形態2に記載のトランジスタを適用して構成される。トランジスタ162としては、実施の形態1及び実施の形態2で示すトランジスタのいずれの構造も適用することができる。
本実施の形態では、先の実施の形態で示した半導体装置を携帯電話、スマートフォン、電子書籍などの携帯機器に応用した場合の例を図11乃至図14を用いて説明する。
106 素子分離絶縁層
108 ゲート絶縁層
110 ゲート電極層
116 チャネル形成領域
120 不純物領域
124 金属間化合物領域
130 絶縁層
142a 電極層
142b 電極層
144 酸化物半導体層
144a 低抵抗領域
144b 低抵抗領域
144c チャネル形成領域
146 ゲート絶縁層
148a ゲート電極層
148b 導電層
150 絶縁層
152 絶縁層
156a 配線層
156b 配線層
156c 配線層
157a 開口
157b 開口
157c 開口
160 トランジスタ
162 トランジスタ
164 容量素子
250 メモリセル
251 メモリセルアレイ
251a メモリセルアレイ
251b メモリセルアレイ
253 周辺回路
254 容量素子
400 基板
401 ゲート電極層
402 ゲート絶縁層
403 チャネル形成領域
404a 低抵抗領域
404b 低抵抗領域
405 導電膜
405a 電極層
405b 電極層
407 絶縁層
409 酸化物半導体層
420 トランジスタ
430 トランジスタ
436 下地絶縁層
440 トランジスタ
450 トランジスタ
455a 開口
455b 開口
455c 開口
465a 配線層
465b 配線層
465c 配線層
502 電極
504 電極
506 電極
508 容量線
509 ワード線
510 nチャネル型トランジスタ
512 pチャネル型トランジスタ
801 トランジスタ
803 トランジスタ
804 トランジスタ
805 トランジスタ
806 トランジスタ
807 Xデコーダー
808 Yデコーダー
811 トランジスタ
812 保持容量
813 Xデコーダー
814 Yデコーダー
901 RF回路
902 アナログベースバンド回路
903 デジタルベースバンド回路
904 バッテリー
905 電源回路
906 アプリケーションプロセッサ
907 CPU
908 DSP
910 フラッシュメモリ
911 ディスプレイコントローラ
912 メモリ回路
913 ディスプレイ
914 表示部
915 ソースドライバ
916 ゲートドライバ
917 音声回路
918 キーボード
919 タッチセンサ
950 メモリ回路
951 メモリコントローラ
952 メモリ
953 メモリ
954 スイッチ
955 スイッチ
956 ディスプレイコントローラ
957 ディスプレイ
1001 バッテリー
1002 電源回路
1003 マイクロプロセッサ
1004 フラッシュメモリ
1005 音声回路
1006 キーボード
1007 メモリ回路
1008 タッチパネル
1009 ディスプレイ
1010 ディスプレイコントローラ
1420 トランジスタ
1430 トランジスタ
1440 トランジスタ
1450 トランジスタ
1460 トランジスタ
1480 トランジスタ
Claims (9)
- 第1の導電層と、
第2の導電層と、
前記第1の導電層上及び前記第2の導電層上に設けられ、前記第1の導電層と接する領域を有する第1の低抵抗領域と、前記第2の導電層と接する領域を有する第2の低抵抗領域と、前記第1の低抵抗領域及び前記第2の低抵抗領域に挟まれるチャネル形成領域と、
を含む酸化物半導体層と、
前記酸化物半導体層上のゲート絶縁層と、
前記ゲート絶縁層上の前記チャネル形成領域と重畳する領域を有するゲート電極層と、
前記ゲート絶縁層上及び前記ゲート電極層上の絶縁層と、
前記絶縁層及び前記ゲート絶縁層に設けられた第1の開口を介して、前記第1の導電層と接する領域を有する第1の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられ、前記第2の導電層と重畳する第2の開口を介して、前記第2の低抵抗領域と電気的に接続する第2の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられ、前記第1の導電層と重畳する第3の開口を介して、前記第1の低抵抗領域と接する領域を有する第3の配線層と、を有する半導体装置。 - 第1の導電層と、
第2の導電層と、
前記第1の導電層上及び前記第2の導電層上に設けられ、前記第1の導電層と接する領域を有する第1の低抵抗領域と、前記第2の導電層と接する領域を有する第2の低抵抗領域と、前記第1の低抵抗領域及び前記第2の低抵抗領域に挟まれるチャネル形成領域と、
を含む酸化物半導体層と、
前記酸化物半導体層上のゲート絶縁層と、
前記ゲート絶縁層上の前記チャネル形成領域と重畳する領域を有するゲート電極層と、
前記ゲート絶縁層上及び前記ゲート電極層上の絶縁層と、
前記絶縁層及び前記ゲート絶縁層に設けられた第1の開口を介して、前記第1の導電層と接する領域を有する第1の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられ、前記第2の導電層と重畳する第2の開口を介して、前記第2の低抵抗領域と接する領域を有する第2の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられ、前記第1の導電層と重畳する第3の開口を介して、前記第1の低抵抗領域と接する領域を有する第3の配線層と、を有する半導体装置。 - 請求項2において、
前記酸化物半導体層の前記第2の配線層と接する領域と、前記酸化物半導体層の前記第3の配線層と接する領域の膜厚とは、前記酸化物半導体層のチャネル形成領域の膜厚よりも薄い半導体装置。 - 第1の導電層と、
第2の導電層と、
前記第1の導電層及び前記第2の導電層上に設けられ、前記第1の導電層と接する領域を有する第1の低抵抗領域と、前記第2の導電層と接する領域を有する第2の低抵抗領域と、前記第1の低抵抗領域及び前記第2の低抵抗領域に挟まれるチャネル形成領域と、を含む酸化物半導体層と、
前記酸化物半導体層上のゲート絶縁層と、
前記ゲート絶縁層上の前記チャネル形成領域と重畳するゲート電極層と、
前記ゲート絶縁層上及び前記ゲート電極層上の絶縁層と、
前記絶縁層及び前記ゲート絶縁層に設けられた第1の開口を介して、前記第1の導電層と接する領域を有する第1の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられた第2の開口を介して、前記第2の導電層と接する領域を有する第2の配線層と、
前記絶縁層及び前記ゲート絶縁層に設けられ、前記第1の導電層と重畳する第3の開口を介して、前記第1の低抵抗領域と接する領域を有する第3の配線層と、を有する半導体装置。 - 請求項1乃至請求項4のいずれか一項において、
前記絶縁層は酸化アルミニウム層を含む半導体装置。 - 請求項1乃至請求項5のいずれか一項において、
前記第1の導電層及び前記第2の導電層は、酸化物半導体を含む半導体装置。 - 請求項1乃至請求項6のいずれか一項において、前記第1の導電層及び前記第2の導電層は金属材料または合金材料を含む半導体装置。
- 請求項1乃至請求項7のいずれか一項において、
前記第1の配線層乃至前記第3の配線層には、少なくとも2種類の異なる材料が用いられる半導体装置。 - 請求項1乃至請求項8のいずれか一項において、
前記酸化物半導体層は、結晶状態における化学量論的組成に対し、酸素の含有量が過剰な領域が少なくとも一部含まれている半導体装置。
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US8637864B2 (en) | 2011-10-13 | 2014-01-28 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method of manufacturing the same |
US10026847B2 (en) | 2011-11-18 | 2018-07-17 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor element, method for manufacturing semiconductor element, and semiconductor device including semiconductor element |
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-
2012
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- 2012-09-13 TW TW101133491A patent/TWI557911B/zh not_active IP Right Cessation
- 2012-09-13 JP JP2012201469A patent/JP6124540B2/ja not_active Expired - Fee Related
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KR102124296B1 (ko) | 2020-06-18 |
US20130069055A1 (en) | 2013-03-21 |
US8952379B2 (en) | 2015-02-10 |
TW201318173A (zh) | 2013-05-01 |
TWI557911B (zh) | 2016-11-11 |
KR20130030214A (ko) | 2013-03-26 |
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