JP5032421B2 - フラッシュメモリ及びその製造方法 - Google Patents
フラッシュメモリ及びその製造方法 Download PDFInfo
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- JP5032421B2 JP5032421B2 JP2008224919A JP2008224919A JP5032421B2 JP 5032421 B2 JP5032421 B2 JP 5032421B2 JP 2008224919 A JP2008224919 A JP 2008224919A JP 2008224919 A JP2008224919 A JP 2008224919A JP 5032421 B2 JP5032421 B2 JP 5032421B2
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- ion implantation
- shallow trench
- active region
- trench isolation
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- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000002955 isolation Methods 0.000 claims description 78
- 238000005468 ion implantation Methods 0.000 claims description 69
- 238000000034 method Methods 0.000 claims description 61
- 239000007943 implant Substances 0.000 claims description 40
- 239000000758 substrate Substances 0.000 claims description 10
- 238000005530 etching Methods 0.000 description 15
- 238000001020 plasma etching Methods 0.000 description 11
- 238000007667 floating Methods 0.000 description 8
- 229910052785 arsenic Inorganic materials 0.000 description 6
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 229920002120 photoresistant polymer Polymers 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SJHPCNCNNSSLPL-CSKARUKUSA-N (4e)-4-(ethoxymethylidene)-2-phenyl-1,3-oxazol-5-one Chemical compound O1C(=O)C(=C/OCC)\N=C1C1=CC=CC=C1 SJHPCNCNNSSLPL-CSKARUKUSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- LPQOADBMXVRBNX-UHFFFAOYSA-N ac1ldcw0 Chemical compound Cl.C1CN(C)CCN1C1=C(F)C=C2C(=O)C(C(O)=O)=CN3CCSC1=C32 LPQOADBMXVRBNX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
-
- 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
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- High Energy & Nuclear Physics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
Description
230 活性領域
240 共通ソース
Claims (6)
- 基板に形成された素子分離膜(Shallow Trench Isolation)及び活性領域と、
前記活性領域上に形成された複数のスタックゲートと、
前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)の下側及び活性領域に形成された深いインプラント領域と、
前記各スタックゲートの間の活性領域の表面に形成された浅いインプラント領域と、を含み、
前記深いインプラント領域及び前記浅いインプラント領域は、共通ソースを形成し、
前記深いインプラント領域及び前記浅いインプラント領域は、前記素子分離膜(Shallow Trench Isolation)及び前記活性領域に対してインプラントを行うことにより形成され、前記素子分離膜(Shallow Trench Isolation)は除去されずに残っており、
前記スタックゲートの高さが前記素子分離膜(Shallow Trench Isolation)の深さより大きく、
前記深いインプラント領域は、
前記各スタックゲートの間の活性領域に前記素子分離膜(Shallow Trench Isolation)の底部分より浅い深さで形成された第1イオン注入領域と、
前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)の下側及び活性領域に前記素子分離膜(Shallow Trench Isolation)の底部分より深い深さで形成された第2イオン注入領域と、
前記各スタックゲートの間の活性領域に前記第1イオン注入領域より深い深さで形成された第3イオン注入領域と、を含むことを特徴とするフラッシュメモリ。 - 前記第2イオン注入領域は、前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)の下側及び活性領域に直線で連結された形態であることを特徴とする請求項1に記載のフラッシュメモリ。
- 前記浅いインプラント領域は、
前記深いインプラント領域の上側と電気的に連結されることを特徴とする請求項1に記載のフラッシュメモリ。 - 基板に活性領域を定義する素子分離膜(Shallow Trench Isolation)を形成する段階と、
前記活性領域上に複数のスタックゲートを形成する段階と、
前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)の下側及び活性領域に深いインプラント領域を形成する段階と、
前記各スタックゲートの間の活性領域の表面に浅いインプラント領域を形成する段階と、を含み、
前記深いインプラント領域及び前記浅いインプラント領域は、共通ソースを形成し、
前記深いインプラント領域及び前記浅いインプラント領域は、前記素子分離膜(Shallow Trench Isolation)及び前記活性領域に対してインプラントを行うことにより形成され、前記素子分離膜(Shallow Trench Isolation)は除去されずに残っており、
前記スタックゲートを形成する段階では、
前記スタックゲートの高さが前記素子分離膜(Shallow Trench Isolation)の深さより大きく、
前記深いインプラント領域を形成する段階は、
前記各スタックゲートの間の活性領域に前記素子分離膜(Shallow Trench Isolation)の底部分より浅い深さで第1イオン注入領域を形成する段階と、
前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)の下側及び活性領域に前記素子分離膜(Shallow Trench Isolation)の底部分より深い深さで第2イオン注入領域を形成する段階と、
前記第1イオン注入領域を形成する段階後に、前記各スタックゲートの間の活性領域に前記第1イオン注入領域より深い深さで第3イオン注入領域を形成する段階と、を含み、
前記第1イオン注入領域を形成する段階、前記第2イオン注入領域を形成する段階、及び前記第3イオン注入領域を形成する段階は、前記活性領域及び前記素子分離膜(Shallow Trench Isolation)に対してイオン注入を行うことによりなされることを特徴とするフラッシュメモリの製造方法。 - 前記第2イオン注入領域が前記素子分離膜(Shallow Trench Isolation)の下側及び活性領域に直線で連結されるように、前記第2イオン注入領域を形成することを特徴とする請求項4に記載のフラッシュメモリの製造方法。
- 前記浅いインプラント領域は、
前記深いインプラント領域を形成する段階後に、
セルソース/ドレーン工程、高電圧LDD(HV LDD)工程または低電圧LDD(LV LDD)工程のうち少なくとも何れか一つの工程を行うとき、前記各スタックゲートの間の素子分離膜(Shallow Trench Isolation)及び活性領域をオープンしてイオン注入を進行することで形成されることを特徴とする請求項4に記載のフラッシュメモリの製造方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070090832A KR100872720B1 (ko) | 2007-09-07 | 2007-09-07 | 플래시 메모리 및 그 제조방법 |
KR10-2007-0090832 | 2007-09-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009065154A JP2009065154A (ja) | 2009-03-26 |
JP5032421B2 true JP5032421B2 (ja) | 2012-09-26 |
Family
ID=40372163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008224919A Expired - Fee Related JP5032421B2 (ja) | 2007-09-07 | 2008-09-02 | フラッシュメモリ及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8072019B2 (ja) |
JP (1) | JP5032421B2 (ja) |
KR (1) | KR100872720B1 (ja) |
CN (1) | CN101383354B (ja) |
DE (1) | DE102008045344A1 (ja) |
TW (1) | TW200913235A (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101016518B1 (ko) * | 2008-07-15 | 2011-02-24 | 주식회사 동부하이텍 | 반도체 메모리 소자 및 반도체 메모리 소자의 제조 방법 |
CN103715145B (zh) * | 2012-09-29 | 2017-07-14 | 中芯国际集成电路制造(上海)有限公司 | Nor快闪存储器的形成方法 |
US9673194B2 (en) * | 2013-10-31 | 2017-06-06 | Taiwan Semiconductor Manufacturing Company Limited | Semiconductor arrangement and formation thereof |
US9679979B2 (en) * | 2014-02-13 | 2017-06-13 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor structure for flash memory cells and method of making same |
US9876019B1 (en) * | 2016-07-13 | 2018-01-23 | Globalfoundries Singapore Pte. Ltd. | Integrated circuits with programmable memory and methods for producing the same |
CN106941076B (zh) * | 2017-04-24 | 2020-05-01 | 上海华力微电子有限公司 | 一种降低闪存源端导通电阻的方法 |
CN112309853A (zh) * | 2020-11-12 | 2021-02-02 | 上海华虹宏力半导体制造有限公司 | 屏蔽栅极沟槽结构的制备方法 |
Family Cites Families (10)
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JPH10223868A (ja) * | 1997-02-12 | 1998-08-21 | Mitsubishi Electric Corp | 不揮発性半導体記憶装置及びその製造方法 |
TW355835B (en) * | 1997-12-12 | 1999-04-11 | United Microelectronics Corp | Manufacturing method of flash memory |
JP2000269366A (ja) * | 1999-03-19 | 2000-09-29 | Toshiba Corp | 不揮発性半導体メモリ |
US6596586B1 (en) | 2002-05-21 | 2003-07-22 | Advanced Micro Devices, Inc. | Method of forming low resistance common source line for flash memory devices |
KR100507699B1 (ko) * | 2002-06-18 | 2005-08-11 | 주식회사 하이닉스반도체 | 반도체 플래시 메모리 셀의 제조방법 |
JP2004235399A (ja) * | 2003-01-30 | 2004-08-19 | Renesas Technology Corp | 不揮発性半導体記憶装置 |
KR100638426B1 (ko) * | 2004-12-23 | 2006-10-24 | 동부일렉트로닉스 주식회사 | 플래시 메모리 셀 및 그 제조 방법 |
KR100661230B1 (ko) * | 2004-12-30 | 2006-12-22 | 동부일렉트로닉스 주식회사 | 플래시 메모리 셀 및 그 제조 방법 |
JP4979060B2 (ja) | 2006-03-03 | 2012-07-18 | ルネサスエレクトロニクス株式会社 | 表示制御用半導体集積回路 |
KR100806787B1 (ko) * | 2006-07-24 | 2008-02-27 | 동부일렉트로닉스 주식회사 | 플래쉬 반도체 소자의 제조방법 |
-
2007
- 2007-09-07 KR KR1020070090832A patent/KR100872720B1/ko not_active IP Right Cessation
-
2008
- 2008-08-28 US US12/200,423 patent/US8072019B2/en not_active Expired - Fee Related
- 2008-08-29 TW TW097133184A patent/TW200913235A/zh unknown
- 2008-09-01 DE DE102008045344A patent/DE102008045344A1/de not_active Ceased
- 2008-09-02 JP JP2008224919A patent/JP5032421B2/ja not_active Expired - Fee Related
- 2008-09-08 CN CN2008102156292A patent/CN101383354B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE102008045344A1 (de) | 2009-05-28 |
JP2009065154A (ja) | 2009-03-26 |
TW200913235A (en) | 2009-03-16 |
CN101383354A (zh) | 2009-03-11 |
US20090065840A1 (en) | 2009-03-12 |
CN101383354B (zh) | 2010-11-03 |
KR100872720B1 (ko) | 2008-12-05 |
US8072019B2 (en) | 2011-12-06 |
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