JPH11508734A - リードオンリメモリセル装置の製造方法 - Google Patents
リードオンリメモリセル装置の製造方法Info
- Publication number
- JPH11508734A JPH11508734A JP9504700A JP50470097A JPH11508734A JP H11508734 A JPH11508734 A JP H11508734A JP 9504700 A JP9504700 A JP 9504700A JP 50470097 A JP50470097 A JP 50470097A JP H11508734 A JPH11508734 A JP H11508734A
- Authority
- JP
- Japan
- Prior art keywords
- trench
- doped
- mask
- memory cell
- dielectric
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B99/00—Subject matter not provided for in other groups of this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
Landscapes
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.リードオンリメモリセル装置を製造するための方法において、 −半導体基板(1)の主面(2)に、第1の誘電体(10)、浮動ゲート(11 )、第2の誘電体(12)およびコントロールゲート(13a)を有する、それ ぞれ主面(2)に対して垂直なMOSトランジスタを含んでいるメモリセルを有 するセル領域が形成され、 −半導体基板(1)が少なくともセル領域の範囲内に第1の導電形にドープされ 、 −半導体基板(1)の主面(2)にセル領域を形成するため、すべてのセル領域 にわたって延びている第2の導電形にドープされた領域(4)が作られ、 −トレンチマスク(6)が作られ、 −エッチングマスクとしてトレンチマスク(6)の使用のもとに異方性の乾式エ ッチングプロセスで主面(2)に多数のほぼ平行に延びているストリップ状のト レンチ(7)がエッチングされ、その際に主面(2)に隣接するトレンチ(7) の間に配置されたストリップ状の第2の導電形にドープされた領域(14b)が 第2の導電形にドープされた領域(4)の構造化により形成され、 −トレンチ(7)の底に配置されたストリップ状の第2の導電形にドープされた 領域(14a)がイオン注入により形成され、その際にトレンチマスク(6)が 注入マスクとして作用し、 −トレンチ(7)の向かい合う縁にそれぞれ垂直MOSトランジスタに対する第 1の誘電体(10)、浮動ゲート(11)、第2の誘電体(12)およびコント ロールゲート(13a)が形成され、 −1つの縁に沿って隣接するMOSトランジスタの浮動ゲート(11)およびコ ントロールゲート(13a)が互いに絶縁され、 −トレンチ(7)に対して横方向に延びているワード線(13a)が作られ、こ れらがそれぞれ、そのつどのワード線(13a)の下側に配置されている垂直M OSトランジスタのコントロールゲート(13a)に接続されている ことを特徴とするリードオンリメモリセル装置の製造方法。 2.トレンチ(7)の底に配置されたストリッブ状のドープ領域(14a)を形 成するためのイオン注入の前にトレンチ(7)の側壁がマスクするスペーサ(8 )により覆われ、これらがイオン注入の後に除去されることを特徴とする請求項 1記載の方法。 3.−ストリップ状のドープ領域(14a、14b)の形成後に、少なくともト レンチ(7)の縁を覆う第1の誘電層(10)が作られ、 −第1の誘電層(10)の上に第1のドープされたポリシリコン層が作られ、 −異方性エッチングにより第1のドープされたポリシリコン層からドープされた ポリシリコンスペーサ(11)が形成され、 −第2の誘電層(12)が作られ、 −第2のドープされたポリシリコン層(13)が作られ、 −ワード線マスクを用いての第2のドープされたポリシリコン層(13)の構造 化によりワード線(13a)およびコントロールゲート(13a)が形成され、 −第2の誘電層(12)およびドープされたポリシリコンスペーサ(11)の構 造化によりそれぞれMOSトランジスタに対する第2の誘電体および浮動ゲート が形成される ことを特徴とする請求項1または2記載の方法。 4.トレンチマスク(6)がドープされたポリシリコンスペーサ(11)の形成 後に除去されることを特徴とする請求項3記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19524478.8 | 1995-07-05 | ||
DE19524478A DE19524478C2 (de) | 1995-07-05 | 1995-07-05 | Verfahren zur Herstellung einer Festwertspeicherzellenanordnung |
PCT/DE1996/001117 WO1997002599A1 (de) | 1995-07-05 | 1996-06-25 | Verfahren zur herstellung einer festwertspeicherzellenanordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11508734A true JPH11508734A (ja) | 1999-07-27 |
JP3615765B2 JP3615765B2 (ja) | 2005-02-02 |
Family
ID=7766070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50470097A Expired - Fee Related JP3615765B2 (ja) | 1995-07-05 | 1996-06-25 | リードオンリメモリセル装置の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5998261A (ja) |
EP (1) | EP0836747B1 (ja) |
JP (1) | JP3615765B2 (ja) |
KR (1) | KR100417451B1 (ja) |
DE (2) | DE19524478C2 (ja) |
IN (1) | IN189218B (ja) |
WO (1) | WO1997002599A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004312020A (ja) * | 2003-04-07 | 2004-11-04 | Silicon Storage Technology Inc | 双方向性読出し/プログラム不揮発性浮遊ゲート・メモリセル及びその配列及び製造方法 |
JP2005500670A (ja) * | 2001-03-08 | 2005-01-06 | マイクロン・テクノロジー・インコーポレーテッド | 2f2メモリ・デバイス・システムおよび方法 |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19617646C2 (de) * | 1996-05-02 | 1998-07-09 | Siemens Ag | Speicherzellenanordnung und ein Verfahren zu deren Herstellung |
EP0924767B1 (de) * | 1997-12-22 | 2011-05-11 | Infineon Technologies AG | EEPROM-Anordnung und Verfahren zu deren Herstellung |
DE19808182C1 (de) * | 1998-02-26 | 1999-08-12 | Siemens Ag | Elektrisch programmierbare Speicherzellenanordnung und ein Verfahren zu deren Herstellung |
US6087222A (en) * | 1998-03-05 | 2000-07-11 | Taiwan Semiconductor Manufacturing Company | Method of manufacture of vertical split gate flash memory device |
DE19820651B4 (de) * | 1998-05-08 | 2007-04-12 | Kabelschlepp Gmbh | Leitungsführungsanordnung mit einer zugentlastenden Befestigung wenigstens einer in der Leitungsführungsanordnung geführten Leitung |
US6204123B1 (en) | 1998-10-30 | 2001-03-20 | Sony Corporation | Vertical floating gate transistor with epitaxial channel |
US6358790B1 (en) | 1999-01-13 | 2002-03-19 | Agere Systems Guardian Corp. | Method of making a capacitor |
DE19929233C1 (de) * | 1999-06-25 | 2001-02-01 | Siemens Ag | Speicherzellenanordnung mit auf einer Grabenseitenwand angeordnetem Floating-Gate und Herstellungsverfahren |
US6303436B1 (en) * | 1999-09-21 | 2001-10-16 | Mosel Vitelic, Inc. | Method for fabricating a type of trench mask ROM cell |
US6303439B1 (en) * | 1999-11-24 | 2001-10-16 | United Microelectronics Corp. | Fabrication method for a two-bit flash memory cell |
US6306708B1 (en) * | 2000-02-02 | 2001-10-23 | United Microelectronics Corp. | Fabrication method for an electrically erasable programmable read only memory |
JP3679970B2 (ja) * | 2000-03-28 | 2005-08-03 | 株式会社東芝 | 不揮発性半導体記憶装置及びその製造方法 |
DE10041749A1 (de) | 2000-08-27 | 2002-03-14 | Infineon Technologies Ag | Vertikale nichtflüchtige Halbleiter-Speicherzelle sowie Verfahren zu deren Herstellung |
US6458657B1 (en) * | 2000-09-25 | 2002-10-01 | Macronix International Co., Ltd. | Method of fabricating gate |
US6599813B2 (en) * | 2001-06-29 | 2003-07-29 | International Business Machines Corporation | Method of forming shallow trench isolation for thin silicon-on-insulator substrates |
US6541815B1 (en) * | 2001-10-11 | 2003-04-01 | International Business Machines Corporation | High-density dual-cell flash memory structure |
US6952033B2 (en) * | 2002-03-20 | 2005-10-04 | Silicon Storage Technology, Inc. | Semiconductor memory array of floating gate memory cells with buried bit-line and raised source line |
US6917069B2 (en) * | 2001-10-17 | 2005-07-12 | Silicon Storage Technology, Inc. | Semiconductor memory array of floating gate memory cells with buried bit-line and vertical word line transistor |
US6531733B1 (en) * | 2001-12-17 | 2003-03-11 | Windbond Electronics Corporation | Structure of flash memory cell and method for manufacturing the same |
TW564552B (en) * | 2002-10-21 | 2003-12-01 | Nanya Technology Corp | A trench type stacked gate flash memory and the method to fabricate the same |
TW583755B (en) * | 2002-11-18 | 2004-04-11 | Nanya Technology Corp | Method for fabricating a vertical nitride read-only memory (NROM) cell |
JP4042107B2 (ja) * | 2003-02-14 | 2008-02-06 | 富士電機ホールディングス株式会社 | 磁気転写用マスタディスクの製造方法 |
TW588438B (en) * | 2003-08-08 | 2004-05-21 | Nanya Technology Corp | Multi-bit vertical memory cell and method of fabricating the same |
US6933557B2 (en) * | 2003-08-11 | 2005-08-23 | Atmel Corporation | Fowler-Nordheim block alterable EEPROM memory cell |
KR100526891B1 (ko) * | 2004-02-25 | 2005-11-09 | 삼성전자주식회사 | 반도체 소자에서의 버티컬 트랜지스터 구조 및 그에 따른형성방법 |
TWI231960B (en) * | 2004-05-31 | 2005-05-01 | Mosel Vitelic Inc | Method of forming films in the trench |
KR100668222B1 (ko) * | 2005-06-13 | 2007-01-11 | 동부일렉트로닉스 주식회사 | 플래시 메모리 소자의 적층 게이트 구조 및 그 형성 방법 |
US7859026B2 (en) * | 2006-03-16 | 2010-12-28 | Spansion Llc | Vertical semiconductor device |
US7646054B2 (en) * | 2006-09-19 | 2010-01-12 | Sandisk Corporation | Array of non-volatile memory cells with floating gates formed of spacers in substrate trenches |
KR101427362B1 (ko) * | 2006-09-19 | 2014-08-07 | 샌디스크 테크놀로지스, 인코포레이티드 | 기판 트렌치에 스페이서로 형성된 플로팅 게이트를 구비하는 비휘발성 메모리 셀의 어레이 |
US7696044B2 (en) * | 2006-09-19 | 2010-04-13 | Sandisk Corporation | Method of making an array of non-volatile memory cells with floating gates formed of spacers in substrate trenches |
US7800161B2 (en) * | 2006-12-21 | 2010-09-21 | Sandisk Corporation | Flash NAND memory cell array with charge storage elements positioned in trenches |
US7642160B2 (en) * | 2006-12-21 | 2010-01-05 | Sandisk Corporation | Method of forming a flash NAND memory cell array with charge storage elements positioned in trenches |
US20080164004A1 (en) * | 2007-01-08 | 2008-07-10 | Anastasia Kolesnichenko | Method and system of electromagnetic stirring for continuous casting of medium and high carbon steels |
US9461182B2 (en) * | 2007-05-07 | 2016-10-04 | Infineon Technologies Ag | Memory cell |
US10522549B2 (en) * | 2018-02-17 | 2019-12-31 | Varian Semiconductor Equipment Associates, Inc. | Uniform gate dielectric for DRAM device |
TWI683418B (zh) * | 2018-06-26 | 2020-01-21 | 華邦電子股份有限公司 | 動態隨機存取記憶體及其製造、寫入與讀取方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6240774A (ja) * | 1985-08-16 | 1987-02-21 | Nippon Denso Co Ltd | 不揮発性半導体記憶装置 |
JPS6272170A (ja) * | 1985-09-26 | 1987-04-02 | Toshiba Corp | 半導体装置 |
JPS6286866A (ja) * | 1985-10-14 | 1987-04-21 | Nippon Denso Co Ltd | 不揮発性半導体記憶装置 |
JPH07120717B2 (ja) * | 1986-05-19 | 1995-12-20 | 日本電気株式会社 | 半導体記憶装置の製造方法 |
JPS6378573A (ja) * | 1986-09-22 | 1988-04-08 | Hitachi Ltd | 半導体装置 |
JPS63102372A (ja) * | 1986-10-20 | 1988-05-07 | Fujitsu Ltd | Eepromの製造方法 |
JPH01150364A (ja) * | 1987-12-07 | 1989-06-13 | Sony Corp | メモリ装置の製法 |
JPH031574A (ja) * | 1989-05-29 | 1991-01-08 | Hitachi Ltd | 不揮発性半導体記憶装置およびその製造方法 |
JPH07105453B2 (ja) * | 1989-07-13 | 1995-11-13 | 株式会社東芝 | 半導体記憶装置のセル構造 |
US5180680A (en) * | 1991-05-17 | 1993-01-19 | United Microelectronics Corporation | Method of fabricating electrically erasable read only memory cell |
JPH0567791A (ja) * | 1991-06-20 | 1993-03-19 | Mitsubishi Electric Corp | 電気的に書込および消去可能な半導体記憶装置およびその製造方法 |
US5414287A (en) * | 1994-04-25 | 1995-05-09 | United Microelectronics Corporation | Process for high density split-gate memory cell for flash or EPROM |
US5554550A (en) * | 1994-09-14 | 1996-09-10 | United Microelectronics Corporation | Method of fabricating electrically eraseable read only memory cell having a trench |
-
1995
- 1995-07-05 DE DE19524478A patent/DE19524478C2/de not_active Expired - Fee Related
-
1996
- 1996-06-25 EP EP96918610A patent/EP0836747B1/de not_active Expired - Lifetime
- 1996-06-25 WO PCT/DE1996/001117 patent/WO1997002599A1/de active IP Right Grant
- 1996-06-25 KR KR1019970709885A patent/KR100417451B1/ko not_active IP Right Cessation
- 1996-06-25 JP JP50470097A patent/JP3615765B2/ja not_active Expired - Fee Related
- 1996-06-25 DE DE59607727T patent/DE59607727D1/de not_active Expired - Lifetime
- 1996-06-25 US US08/973,701 patent/US5998261A/en not_active Expired - Lifetime
- 1996-06-28 IN IN1203CA1996 patent/IN189218B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005500670A (ja) * | 2001-03-08 | 2005-01-06 | マイクロン・テクノロジー・インコーポレーテッド | 2f2メモリ・デバイス・システムおよび方法 |
JP2004312020A (ja) * | 2003-04-07 | 2004-11-04 | Silicon Storage Technology Inc | 双方向性読出し/プログラム不揮発性浮遊ゲート・メモリセル及びその配列及び製造方法 |
Also Published As
Publication number | Publication date |
---|---|
KR19990028565A (ko) | 1999-04-15 |
EP0836747B1 (de) | 2001-09-19 |
DE19524478C2 (de) | 2002-03-14 |
JP3615765B2 (ja) | 2005-02-02 |
WO1997002599A1 (de) | 1997-01-23 |
EP0836747A1 (de) | 1998-04-22 |
DE19524478A1 (de) | 1997-01-09 |
DE59607727D1 (de) | 2001-10-25 |
KR100417451B1 (ko) | 2004-03-19 |
IN189218B (ja) | 2003-01-04 |
US5998261A (en) | 1999-12-07 |
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