JP6087057B2 - 半導体メモリ装置 - Google Patents
半導体メモリ装置 Download PDFInfo
- Publication number
- JP6087057B2 JP6087057B2 JP2012005134A JP2012005134A JP6087057B2 JP 6087057 B2 JP6087057 B2 JP 6087057B2 JP 2012005134 A JP2012005134 A JP 2012005134A JP 2012005134 A JP2012005134 A JP 2012005134A JP 6087057 B2 JP6087057 B2 JP 6087057B2
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- JP
- Japan
- Prior art keywords
- floating gate
- work function
- insulating film
- memory device
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/68—Floating-gate IGFETs
- H10D30/681—Floating-gate IGFETs having only two programming levels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
- H10D30/667—Vertical DMOS [VDMOS] FETs having substrates comprising insulating layers, e.g. SOI-VDMOS transistors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/031—Manufacture or treatment of data-storage electrodes
- H10D64/035—Manufacture or treatment of data-storage electrodes comprising conductor-insulator-conductor-insulator-semiconductor structures
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
Description
図1(A)に、本実施の形態のFGメモリ装置の例を図示する。ここでは、トランジスタのチャネル方向の断面模式図を示す。トランジスタはp型の単結晶シリコンの基板101上に厚さ5nm以上100nm以下の高仕事関数化合物半導体よりなるフローティングゲート104と基板101との間に適切な厚さのフローティングゲート絶縁膜103を有する。
図2(A)に、本実施の形態のFGメモリ装置の例を図示する。なお、一部の記載については実施の形態1を参酌できる。ここでは、トランジスタのチャネル方向の断面模式図を示す。トランジスタはn型の単結晶シリコンの基板201上に厚さ5nm以上100nm以下の高仕事関数化合物半導体よりなるフローティングゲート204と、基板201との間に適切な厚さのフローティングゲート絶縁膜203を有する。
図2(B)と図2(C)の特徴を併せ持つFGメモリ装置の作製方法の例について図3を用いて簡単に説明する。なお、多くの工程は公知の半導体技術を用いればよいので詳細はそれらを参照できる。
102a ソース
102b ドレイン
103 フローティングゲート絶縁膜
104 フローティングゲート
105 コントロールゲート絶縁膜
106 コントロールゲート
107 n型領域
108a ハロー領域
108b ハロー領域
201 基板
202a ソース
202b ドレイン
203 フローティングゲート絶縁膜
204 フローティングゲート
205 コントロールゲート絶縁膜
206 コントロールゲート
207 弱いn型領域
208 n型領域
209a 側壁
209b 側壁
Claims (3)
- n型半導体を用いたフローティングゲートを有し、
前記フローティングゲートは、インジウム又は亜鉛の少なくとも一つと窒素と酸素とを有し、仕事関数が5.5電子ボルト以上であることを特徴とする半導体メモリ装置。 - 請求項1において、
前記フローティングゲートのキャリア濃度は1×1019cm−3以上であることを特徴とする半導体メモリ装置。 - 請求項1又は請求項2において、
前記フローティングゲートの下方にフローティングゲート絶縁膜を有し、
前記フローティングゲート絶縁膜の厚さが2nm以上4nm以下であることを特徴とする半導体メモリ装置。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012005134A JP6087057B2 (ja) | 2011-01-13 | 2012-01-13 | 半導体メモリ装置 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011004716 | 2011-01-13 | ||
| JP2011004716 | 2011-01-13 | ||
| JP2012005134A JP6087057B2 (ja) | 2011-01-13 | 2012-01-13 | 半導体メモリ装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2012160723A JP2012160723A (ja) | 2012-08-23 |
| JP2012160723A5 JP2012160723A5 (ja) | 2015-02-26 |
| JP6087057B2 true JP6087057B2 (ja) | 2017-03-01 |
Family
ID=46490133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012005134A Expired - Fee Related JP6087057B2 (ja) | 2011-01-13 | 2012-01-13 | 半導体メモリ装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8575678B2 (ja) |
| JP (1) | JP6087057B2 (ja) |
| KR (2) | KR101422330B1 (ja) |
Families Citing this family (8)
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|---|---|---|---|---|
| JP5956731B2 (ja) * | 2010-09-02 | 2016-07-27 | 株式会社半導体エネルギー研究所 | 半導体記憶装置 |
| US9001564B2 (en) | 2011-06-29 | 2015-04-07 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and a method for driving the same |
| US8969867B2 (en) | 2012-01-18 | 2015-03-03 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
| KR102097171B1 (ko) | 2012-01-20 | 2020-04-03 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
| US9269822B2 (en) | 2013-09-12 | 2016-02-23 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing semiconductor device |
| KR20160011430A (ko) | 2014-07-22 | 2016-02-01 | 대우조선해양 주식회사 | 선박 복원성 향상을 위한 선저 구조물 및 이를 포함하는 선박 |
| US11302827B2 (en) * | 2020-01-23 | 2022-04-12 | Nanya Technology Corp. | Semiconductor device with sidewall oxidized dielectric and method for fabricating the same |
| CN112325049A (zh) * | 2020-11-30 | 2021-02-05 | 俞立伟 | 复合下水管道 |
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2012
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- 2012-01-12 KR KR1020120003739A patent/KR101422330B1/ko not_active Expired - Fee Related
- 2012-01-13 JP JP2012005134A patent/JP6087057B2/ja not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| KR20120082479A (ko) | 2012-07-23 |
| US8575678B2 (en) | 2013-11-05 |
| KR20140056210A (ko) | 2014-05-09 |
| US20120181597A1 (en) | 2012-07-19 |
| JP2012160723A (ja) | 2012-08-23 |
| KR101422330B1 (ko) | 2014-07-22 |
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