JP6050044B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP6050044B2 JP6050044B2 JP2012160177A JP2012160177A JP6050044B2 JP 6050044 B2 JP6050044 B2 JP 6050044B2 JP 2012160177 A JP2012160177 A JP 2012160177A JP 2012160177 A JP2012160177 A JP 2012160177A JP 6050044 B2 JP6050044 B2 JP 6050044B2
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- Prior art keywords
- film
- region
- oxide semiconductor
- transistor
- semiconductor film
- Prior art date
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- 238000004439 roughness measurement Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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Description
本実施の形態では、本発明の一態様に係る半導体装置の構成について、図1および図2を参照して説明する。
図1は、半導体装置の構成の一例である。図1(A)には半導体装置の断面を、図1(B)には半導体装置の平面を、それぞれ示す。図1(A)において、A1−A2は、トランジスタのチャネル長方向に垂直な断面図であり、B1−B2は、トランジスタのチャネル長方向に平行な断面図である。図1(A)および図1(B)に示す半導体装置は、酸化物半導体を用いたトランジスタ462と容量素子464を有する。
次に、図1(A)および図1(B)に示す半導体装置の回路構成およびその動作について、図1(C)を参照して説明する。
本実施の形態においては、実施の形態1に示す半導体装置の作製方法について、図3乃至図6を用いて説明する。
本実施の形態では、先の実施の形態に示すトランジスタ472と類似する構造のトランジスタ482を使用し、一定時間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。
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8乃至図11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 金属化合物領域
130 絶縁膜
136 絶縁層
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
404a ソース領域
404b ドレイン領域
405a 高抵抗領域
405b 高抵抗領域
406a 低抵抗領域
406b 低抵抗領域
407 高抵抗領域
408 ソース領域
409 チャネル形成領域
411 電極層
412 絶縁膜
420 絶縁膜
421 ドーパント
422 配線層
424 金属元素を含む膜
425 絶縁膜
426 絶縁膜
431 サイドウォール絶縁膜
432 ゲート絶縁膜
442a ソース電極層
442b ドレイン電極層
456 配線層
462 トランジスタ
464 容量素子
472 トランジスタ
480 トランジスタ
482 トランジスタ
484 容量素子
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
909 インターフェイス
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
Claims (3)
- 酸化物半導体膜と、
前記酸化物半導体膜上に接する第1の電極層および第2の電極層と、
前記酸化物半導体膜下に接する第3の電極層と、
前記酸化物半導体膜上のゲート絶縁膜と、
前記ゲート絶縁膜上のゲート電極層と、を有し、
前記酸化物半導体膜は、チャネル形成領域と、第1の領域と、第2の領域と、第3の領域と、第4の領域とを有し、
前記第1の領域は、前記第1の電極層に接する領域を有し、
前記第2の領域は、前記第2の電極層に接する領域を有し、
前記第3の領域は、前記第3の電極層と接する領域を有し、
前記第3の領域は、前記第1の領域と重なり、
前記第4の領域は、前記第2の領域と重なり、
前記チャネル形成領域は、前記第1の領域と前記第2の領域との間に位置し、
前記チャネル形成領域は、前記第3の領域と前記第4の領域との間に位置し、
前記第1の領域及び前記第2の領域は、金属元素を含み、
前記第3の領域は、前記第1の領域よりも抵抗が高く、
前記第4の領域は、前記第2の領域よりも抵抗が高く、
前記第1の電極層は、容量素子の一方の電極として機能し、
前記第3の電極層は、前記容量素子の他方の電極として機能し、
前記第3の領域は、前記容量素子の誘電体として機能することを特徴とする半導体装置。 - 請求項1において、
前記チャネル形成領域と前記第1の領域との間、および前記チャネル形成領域と前記第2の領域との間のそれぞれに、ドーパントを含む領域を有することを特徴とする半導体装置。 - 請求項1または請求項2において、
前記酸化物半導体膜は、インジウム及び亜鉛を含むことを特徴とする半導体装置。
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JP2012160177A JP6050044B2 (ja) | 2011-07-22 | 2012-07-19 | 半導体装置 |
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US9666723B2 (en) | 2017-05-30 |
US10157939B2 (en) | 2018-12-18 |
US20170250205A1 (en) | 2017-08-31 |
JP6306672B2 (ja) | 2018-04-04 |
JP2017046006A (ja) | 2017-03-02 |
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US9012993B2 (en) | 2015-04-21 |
US20130020570A1 (en) | 2013-01-24 |
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