JP6526452B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6526452B2 JP6526452B2 JP2015050122A JP2015050122A JP6526452B2 JP 6526452 B2 JP6526452 B2 JP 6526452B2 JP 2015050122 A JP2015050122 A JP 2015050122A JP 2015050122 A JP2015050122 A JP 2015050122A JP 6526452 B2 JP6526452 B2 JP 6526452B2
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- conductor
- transistor
- semiconductor
- region
- memory cell
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
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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について図面を参照して説明する。
本発明の一態様に係る半導体装置の構成の一例について、図8を用いながら説明する。
トランジスタ490、或いは491は、様々な構造をとりうる。本実施の形態では、理解を容易にするため、トランジスタ491と、その近傍の領域についてのみ抜き出し、図9および図10に示す。
以下では、半導体406a、半導体406b、半導体406c、半導体407a、半導体407b、半導体407c、などに適用可能な酸化物半導体の構造について説明する。なお、本明細書において、結晶が三方晶または菱面体晶である場合、六方晶系として表す。
本発明の一態様に係る半導体装置を適用した半導体装置の構成の一例について、図15を用いながら説明する。
本発明の一態様に係る半導体装置を適用した半導体装置の構成の一例について、図16を用いながら説明する。
本実施の形態では、上述の実施の形態で説明した半導体装置を電子部品に適用する例、及び該電子部品を具備する電子機器に適用する例について、図17、図18を用いて説明する。
本明細書等において、XとYとが接続されている、と明示的に記載する場合は、XとYとが電気的に接続されている場合と、XとYとが機能的に接続されている場合と、XとYとが直接接続されている場合とを含むものとする。したがって、所定の接続関係、例えば、図または文章に示された接続関係に限定されず、図または文章に示された接続関係以外のものも含むものとする。
406a、406b、406c 半導体
407a、407b、407c 半導体
411、412 絶縁体
416a、416b 導電体
417a、417b 導電体
421a、421b 導電体
426、427 導電体
432、434 導電体
442、444 導電体
462、464 絶縁体
490、491 トランジスタ
500 メモリセル
501 領域
Claims (15)
- 第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
第1導電体と、
第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記半導体は、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第1導電体と重なる第1領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第2導電体と重なる第2領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第3導電体と重なる第3領域と、を有し、
前記第1領域と前記第3領域とは重ならない領域を有し、
前記第2領域と前記第3領域とは重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されている半導体装置。 - 隣り合う第1メモリセルと第2メモリセルとを有し、前記第1メモリセルと前記第2メモリセルはそれぞれ、
第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
第1導電体と、
第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記半導体は、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第1導電体と重なる第1領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第2導電体と重なる第2領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第3導電体と重なる第3領域と、を有し、
前記第1領域と前記第3領域とは重ならない領域を有し、
前記第2領域と前記第3領域とは重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されており、
前記第1メモリセルが有する前記第1導電体と、前記第2メモリセルが有する前記第1導電体と、は電気的に接続されている半導体装置。 - 隣り合う第1メモリセルと第2メモリセルとを有し、前記第1メモリセルと前記第2メモリセルはそれぞれ、
第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
第1導電体と、
第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記半導体は、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第1導電体と重なる第1領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第2導電体と重なる第2領域と、
上面からみて前記第4導電体と重ならず、前記第5導電体と重ならず、前記第3導電体と重なる第3領域と、を有し、
前記第1領域と前記第3領域とは重ならない領域を有し、
前記第2領域と前記第3領域とは重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されており、
前記第1メモリセルが有する前記第2導電体と、前記第2メモリセルが有する前記第2導電体と、は電気的に接続されている半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第2領域は、前記第3領域に含まれる半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第1領域と前記第3領域は重ならず、
前記第1領域と前記第3領域との間隔は、前記第1領域と前記第2領域との間隔以下である半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第1領域と前記第3領域が重なり、
前記第1領域と前記第3領域が重なる領域の幅は、前記第1領域と前記第2領域との間隔以下である半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第1領域の端部と前記第3領域の端部は揃っている半導体装置。 - 第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
互いに間隔を開けて配置された第1導電体および第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記第1導電体と前記第3導電体とは、前記半導体を挟んで重ならない領域を有し、
前記第2導電体と前記第3導電体とは、前記半導体を挟んで重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されている半導体装置。 - 隣り合う第1メモリセルと第2メモリセルとを有し、前記第1メモリセルと前記第2メモリセルはそれぞれ、
第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
互いに間隔を開けて配置された第1導電体および第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記第1導電体と前記第3導電体とは、前記半導体を挟んで重ならない領域を有し、
前記第2導電体と前記第3導電体とは、前記半導体を挟んで重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されており、
前記第1メモリセルが有する前記第1導電体と、前記第2メモリセルが有する前記第1導電体と、は電気的に接続されている半導体装置。 - 隣り合う第1メモリセルと第2メモリセルとを有し、前記第1メモリセルと前記第2メモリセルはそれぞれ、
第1トランジスタと、
第2トランジスタと、を有し、
前記第1トランジスタは、
互いに間隔を開けて配置された第1導電体および第2導電体と、
前記第1導電体および前記第2導電体上の第1絶縁体と、
前記第1絶縁体上の半導体と、
前記半導体上の第2絶縁体と、
前記第2絶縁体上の第3導電体と、
前記半導体と接する第4導電体及び第5導電体と、を有し、
前記第1導電体と前記第3導電体とは、前記半導体を挟んで重ならない領域を有し、
前記第2導電体と前記第3導電体とは、前記半導体を挟んで重なる領域を有し、
前記第2トランジスタのソースまたはドレインの一方は、前記第1トランジスタの前記第3導電体と電気的に接続されており、
前記第1メモリセルが有する前記第2導電体と、前記第2メモリセルが有する前記第2導電体と、は電気的に接続されている半導体装置。 - 請求項8乃至請求項10のいずれか一において、
前記第3導電体は、前記第2導電体と前記半導体を挟んで重ならない領域を有する半導体装置。 - 請求項8乃至請求項10のいずれか一において、
前記第1導電体と前記第3導電体とは、前記半導体を挟んで重ならず、
上面から見た前記第1導電体の端部と前記第3導電体の端部との間隔は、前記第1導電体と前記第2導電体との間隔以下である半導体装置。 - 請求項8乃至請求項10のいずれか一において、
前記第1導電体と前記第3導電体とは、前記半導体を挟んで重なり、
上面から見た前記第1導電体と前記第3導電体との重なり幅は、前記第1導電体と前記第2導電体との間隔以下である半導体装置。 - 請求項1乃至請求項13のいずれか一において、
前記第1トランジスタが有する前記半導体は、酸化物半導体であり、
前記第2トランジスタのチャネル形成領域は、酸化物半導体で形成されている半導体装置。 - 請求項1乃至請求項14のいずれか一において、
前記第2トランジスタは、前記第1トランジスタ上に積層されている半導体装置。
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