KR100998967B1 - 비휘발성 메모리 소자의 제조 방법 - Google Patents
비휘발성 메모리 소자의 제조 방법 Download PDFInfo
- Publication number
- KR100998967B1 KR100998967B1 KR1020030090830A KR20030090830A KR100998967B1 KR 100998967 B1 KR100998967 B1 KR 100998967B1 KR 1020030090830 A KR1020030090830 A KR 1020030090830A KR 20030090830 A KR20030090830 A KR 20030090830A KR 100998967 B1 KR100998967 B1 KR 100998967B1
- Authority
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- South Korea
- Prior art keywords
- oxide film
- forming
- floating gate
- film
- tunnel oxide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 150000004767 nitrides Chemical class 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 15
- 229920005591 polysilicon Polymers 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- 238000000151 deposition Methods 0.000 claims abstract description 12
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims abstract description 7
- 239000004065 semiconductor Substances 0.000 claims abstract description 7
- 238000001312 dry etching Methods 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 238000001764 infiltration Methods 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000002784 hot electron Substances 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000005689 Fowler Nordheim tunneling Effects 0.000 description 1
- 210000003323 beak Anatomy 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003949 trap density measurement Methods 0.000 description 1
Images
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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (2)
- 소정의 하부 구조가 형성된 반도체 기판 상에 콘트롤 게이트 산화막을 형성하는 단계와;상기 콘트롤 게이트 산화막 상에 콘트롤 게이트 폴리실리콘을 증착한 후 희생 산화막을 증착하는 단계와;상기 희생 산화막 상부에 플로팅 게이트 형성 예정 영역이 노출되도록 포토레지스트 패턴을 형성하는 단계와;상기 포토레지스트 패턴을 이용한 식각 공정으로 플로팅 게이트 예정 영역의 실리콘 기판을 노출시킨 후 질화막을 증착하는 단계와;상기 질화막을 전면 건식 식각하여 상기 플로팅 게이트 예정 영역의 측벽에 사이드월 질화막을 형성하는 단계와;상기 노출된 실리콘 기판에 터널 산화막을 형성하는 단계와;상기 터널 산화막을 형성한 결과물 전면에 플로팅 게이트 폴리실리콘을 증착하고 평탄화 하는 단계를포함하는 것을 특징으로 하는 비휘발성 메모리 소자의 제조 방법.
- 제 1항에 있어서, 상기 터널 산화막 형성시의 산화 공정으로 플로팅 게이트 예정 영역에 사이드월 질화막과 함께 NO막이 형성되도록 하는 것을 특징으로 하는 비휘발성 메모리 소자의 제조 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020030090830A KR100998967B1 (ko) | 2003-12-12 | 2003-12-12 | 비휘발성 메모리 소자의 제조 방법 |
Applications Claiming Priority (1)
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KR1020030090830A KR100998967B1 (ko) | 2003-12-12 | 2003-12-12 | 비휘발성 메모리 소자의 제조 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050058848A KR20050058848A (ko) | 2005-06-17 |
KR100998967B1 true KR100998967B1 (ko) | 2010-12-09 |
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KR1020030090830A KR100998967B1 (ko) | 2003-12-12 | 2003-12-12 | 비휘발성 메모리 소자의 제조 방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015095717A1 (en) * | 2013-12-20 | 2015-06-25 | Spansion Llc | Gate formation memory by planarization |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002289714A (ja) * | 2001-01-31 | 2002-10-04 | Samsung Electronics Co Ltd | 不揮発性半導体メモリ装置及びその製造方法 |
KR20030010212A (ko) * | 2001-07-26 | 2003-02-05 | 삼성전자주식회사 | 불휘발성 메모리 장치의 평탄화 방법 |
KR20080002037A (ko) * | 2006-06-30 | 2008-01-04 | 주식회사 하이닉스반도체 | 비휘발성 메모리 소자 및 그 제조 방법 |
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2003
- 2003-12-12 KR KR1020030090830A patent/KR100998967B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002289714A (ja) * | 2001-01-31 | 2002-10-04 | Samsung Electronics Co Ltd | 不揮発性半導体メモリ装置及びその製造方法 |
KR20030010212A (ko) * | 2001-07-26 | 2003-02-05 | 삼성전자주식회사 | 불휘발성 메모리 장치의 평탄화 방법 |
KR20080002037A (ko) * | 2006-06-30 | 2008-01-04 | 주식회사 하이닉스반도체 | 비휘발성 메모리 소자 및 그 제조 방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015095717A1 (en) * | 2013-12-20 | 2015-06-25 | Spansion Llc | Gate formation memory by planarization |
US9368644B2 (en) | 2013-12-20 | 2016-06-14 | Cypress Semiconductor Corporation | Gate formation memory by planarization |
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Publication number | Publication date |
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KR20050058848A (ko) | 2005-06-17 |
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