JP4500668B2 - フラッシュメモリ素子の製造方法 - Google Patents
フラッシュメモリ素子の製造方法 Download PDFInfo
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- JP4500668B2 JP4500668B2 JP2004375283A JP2004375283A JP4500668B2 JP 4500668 B2 JP4500668 B2 JP 4500668B2 JP 2004375283 A JP2004375283 A JP 2004375283A JP 2004375283 A JP2004375283 A JP 2004375283A JP 4500668 B2 JP4500668 B2 JP 4500668B2
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- film
- oxide film
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- 238000000034 method Methods 0.000 title claims description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 14
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 14
- 229920005591 polysilicon Polymers 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000005530 etching Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823462—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
-
- 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
- H10B41/40—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the peripheral circuit region
-
- 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
- H10B41/40—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the peripheral circuit region
- H10B41/42—Simultaneous manufacture of periphery and memory cells
- H10B41/43—Simultaneous manufacture of periphery and memory cells comprising only one type of peripheral transistor
- H10B41/48—Simultaneous manufacture of periphery and memory cells comprising only one type of peripheral transistor with a tunnel dielectric layer also being used as part of the peripheral transistor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
- Element Separation (AREA)
Description
B…パターン密度の粗大な領域
11…半導体基板
12…トンネル酸化膜
13…ポリシリコン膜
14…ハードマスク膜
15…第1感光膜
16…第1ウォール酸化膜
17…第1絶縁膜
18…第2感光膜
19…第2ウォール酸化膜
20…第2絶縁膜
Claims (8)
- 第1領域及び第2領域の確定された半導体基板の上部にトンネル酸化膜、ポリシリコン膜及びハードマスク膜を順次形成する段階と、
前記第2領域の前記ハードマスク膜、前記ポリシリコン膜及び前記トンネル酸化膜の所定の領域をエッチングした後、前記半導体基板を所定の深さにエッチングして第1トレンチを形成する段階と、
前記第1トレンチの上部に第1ウォール酸化膜を形成する段階と、
前記第1トレンチが埋め込まれるように、全体構造上部に第1絶縁膜を形成する段階と、
前記第1領域の前記第1絶縁膜、前記ハードマスク膜、前記ポリシリコン膜及び前記トンネル酸化膜の所定の領域をエッチングした後、前記半導体基板を所定の深さにエッチングして第2トレンチを形成する段階と、
前記第2領域の全体が前記第1絶縁膜で覆われた状態で、前記第2トレンチの上部に第2ウォール酸化膜を形成する段階と、
前記第2トレンチが埋め込まれるように、前記第1絶縁膜及び前記第2ウォール酸化膜を含む全体構造上部に第2絶縁膜を形成する段階と、
前記第1及び第2絶縁膜を研磨して平坦化させた後、前記ハードマスク膜を除去する段階と、
を含むことを特徴とするフラッシュメモリ素子の製造方法。 - 前記第1領域はパターン密度の稠密な領域であり、前記第2領域はパターン密度の粗大な領域であることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1領域はセル領域であり、前記第2領域は周辺回路領域であることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1領域はゲートのサイズが小さく形成される領域であり、前記第2領域はゲートのサイズが大きく形成される領域であることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1ウォール酸化膜は、前記第2ウォール酸化膜よりも厚く形成されることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1ウォール酸化膜は30Å以上、且つ60Å以下の厚さに形成され、前記第2ウォール酸化膜は10Å以上、且つ30Å以下の厚さに形成されることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1及び第2ウォール酸化膜は、750℃以上、且つ850℃以下のドライ酸化工程によって形成されることを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
- 前記第1及び第2絶縁膜は、HDP酸化膜を含むことを特徴とする請求項1記載のフラッシュメモリ素子の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040085430A KR100575339B1 (ko) | 2004-10-25 | 2004-10-25 | 플래쉬 메모리 소자의 제조 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006121023A JP2006121023A (ja) | 2006-05-11 |
JP4500668B2 true JP4500668B2 (ja) | 2010-07-14 |
Family
ID=36129061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004375283A Expired - Fee Related JP4500668B2 (ja) | 2004-10-25 | 2004-12-27 | フラッシュメモリ素子の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7122443B2 (ja) |
JP (1) | JP4500668B2 (ja) |
KR (1) | KR100575339B1 (ja) |
CN (1) | CN100440484C (ja) |
DE (1) | DE102004060689B4 (ja) |
TW (1) | TWI282605B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4074292B2 (ja) | 2005-01-17 | 2008-04-09 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP4886219B2 (ja) * | 2005-06-02 | 2012-02-29 | 株式会社東芝 | 半導体装置およびその製造方法 |
KR100696382B1 (ko) * | 2005-08-01 | 2007-03-19 | 삼성전자주식회사 | 반도체 소자 및 그 제조방법 |
KR100772722B1 (ko) * | 2006-03-31 | 2007-11-02 | 주식회사 하이닉스반도체 | 플래쉬 메모리 소자의 소자분리 방법 |
US7998809B2 (en) * | 2006-05-15 | 2011-08-16 | Micron Technology, Inc. | Method for forming a floating gate using chemical mechanical planarization |
JP2008103645A (ja) * | 2006-10-20 | 2008-05-01 | Toshiba Corp | 半導体装置の製造方法 |
JP2009099909A (ja) * | 2007-10-19 | 2009-05-07 | Toshiba Corp | 半導体装置の製造方法 |
CN103489773A (zh) * | 2012-06-14 | 2014-01-01 | 南亚科技股份有限公司 | 在基底中制作多个沟槽的方法 |
US9006080B2 (en) * | 2013-03-12 | 2015-04-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Varied STI liners for isolation structures in image sensing devices |
KR102014437B1 (ko) | 2013-10-17 | 2019-10-21 | 에스케이하이닉스 주식회사 | 다원화된 측벽 산화막 구조를 갖는 반도체 장치 및 그 제조 방법 |
CN104733396B (zh) * | 2013-12-24 | 2018-09-07 | 北京兆易创新科技股份有限公司 | 一种制造快闪存储器的方法 |
CN111341781B (zh) | 2018-05-16 | 2021-06-04 | 长江存储科技有限责任公司 | 用于解决不同图案密度区域处的外延生长负载效应的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998044567A1 (fr) * | 1997-03-28 | 1998-10-08 | Hitachi, Ltd. | Dispositif de memoire remanente a semi-conducteur, dispositif a semi-conducteur et procedes de fabrication associes de ceux-ci |
JP2003060024A (ja) * | 2001-08-13 | 2003-02-28 | Mitsubishi Electric Corp | 半導体装置の製造方法および半導体装置 |
JP2004214621A (ja) * | 2002-12-26 | 2004-07-29 | Hynix Semiconductor Inc | フラッシュメモリ素子の製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW396520B (en) * | 1998-10-30 | 2000-07-01 | United Microelectronics Corp | Process for shallow trench isolation |
US6406976B1 (en) * | 2000-09-18 | 2002-06-18 | Motorola, Inc. | Semiconductor device and process for forming the same |
KR100379612B1 (ko) * | 2000-11-30 | 2003-04-08 | 삼성전자주식회사 | 도전층을 채운 트렌치 소자 분리형 반도체 장치 및 그형성 방법 |
US6805614B2 (en) * | 2000-11-30 | 2004-10-19 | Texas Instruments Incorporated | Multilayered CMP stop for flat planarization |
KR100426485B1 (ko) * | 2001-12-22 | 2004-04-14 | 주식회사 하이닉스반도체 | 플래쉬 메모리 셀의 제조 방법 |
US6700154B1 (en) * | 2002-09-20 | 2004-03-02 | Lattice Semiconductor Corporation | EEPROM cell with trench coupling capacitor |
EP1403917A1 (en) * | 2002-09-26 | 2004-03-31 | STMicroelectronics S.r.l. | Process for manufacturing semiconductor wafers incorporating differentiated isolating structures |
US6794269B1 (en) * | 2002-12-20 | 2004-09-21 | Cypress Semiconductor Corp. | Method for and structure formed from fabricating a relatively deep isolation structure |
US6806531B1 (en) * | 2003-04-07 | 2004-10-19 | Silicon Storage Technology, Inc. | Non-volatile floating gate memory cell with floating gates formed in cavities, and array thereof, and method of formation |
-
2004
- 2004-10-25 KR KR1020040085430A patent/KR100575339B1/ko not_active IP Right Cessation
- 2004-12-15 DE DE102004060689A patent/DE102004060689B4/de not_active Expired - Fee Related
- 2004-12-15 TW TW093138939A patent/TWI282605B/zh not_active IP Right Cessation
- 2004-12-17 US US11/015,451 patent/US7122443B2/en not_active Expired - Fee Related
- 2004-12-27 JP JP2004375283A patent/JP4500668B2/ja not_active Expired - Fee Related
-
2005
- 2005-05-16 CN CNB2005100726809A patent/CN100440484C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998044567A1 (fr) * | 1997-03-28 | 1998-10-08 | Hitachi, Ltd. | Dispositif de memoire remanente a semi-conducteur, dispositif a semi-conducteur et procedes de fabrication associes de ceux-ci |
JP2003060024A (ja) * | 2001-08-13 | 2003-02-28 | Mitsubishi Electric Corp | 半導体装置の製造方法および半導体装置 |
JP2004214621A (ja) * | 2002-12-26 | 2004-07-29 | Hynix Semiconductor Inc | フラッシュメモリ素子の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE102004060689B4 (de) | 2009-09-10 |
JP2006121023A (ja) | 2006-05-11 |
DE102004060689A1 (de) | 2006-04-27 |
TWI282605B (en) | 2007-06-11 |
US20060088965A1 (en) | 2006-04-27 |
CN1770428A (zh) | 2006-05-10 |
US7122443B2 (en) | 2006-10-17 |
TW200614434A (en) | 2006-05-01 |
KR100575339B1 (ko) | 2006-05-02 |
CN100440484C (zh) | 2008-12-03 |
KR20060036547A (en) | 2006-05-02 |
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