KR20050055469A - 비휘발성 메모리 소자의 제조 방법 - Google Patents
비휘발성 메모리 소자의 제조 방법 Download PDFInfo
- Publication number
- KR20050055469A KR20050055469A KR1020030088682A KR20030088682A KR20050055469A KR 20050055469 A KR20050055469 A KR 20050055469A KR 1020030088682 A KR1020030088682 A KR 1020030088682A KR 20030088682 A KR20030088682 A KR 20030088682A KR 20050055469 A KR20050055469 A KR 20050055469A
- Authority
- KR
- South Korea
- Prior art keywords
- oxide film
- tunnel oxide
- nitride
- film
- sacrificial oxide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 150000004767 nitrides Chemical class 0.000 claims abstract description 13
- 238000005530 etching Methods 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000151 deposition Methods 0.000 claims abstract description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 9
- 229920005591 polysilicon Polymers 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims abstract description 6
- 238000001039 wet etching Methods 0.000 claims abstract description 6
- 230000004888 barrier function Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 230000035515 penetration Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 11
- 238000002955 isolation Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002784 hot electron Substances 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration 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
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 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
- 239000007943 implant Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000003949 trap density measurement Methods 0.000 description 1
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
- 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
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42324—Gate electrodes for transistors with a floating gate
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (2)
- 소정의 하부 구조가 형성된 반도체 기판에 희생 산화막을 증착하는 단계와;상기 희생 산화막의 터널 산화막 형성 예정 영역을 식각하는 단계와;상기 결과물에 질화막을 증착한 후 에치백 공정을 진행하여 희생 산화막의 식각된 부분에 질화막 스페이서를 형성하는 단계와;상기 희생 산화막이 식각된 부분의 실리콘 기판에 터널 산화막을 성장시키는 단계와;상기 터널 산화막을 형성한 결과물 전면에 플로팅 게이트용 폴리실리콘을 증착하고 사진 및 식각 공정을 진행하여 플로팅 게이트를 패터닝 하는 단계와;상기 질화막 스페이서를 베리어로 습식 식각 공정을 진행하여 상기 희생 산화막을 제거한 후 산화 공정으로 고전압용 유전체 산화막을 형성하는 단계를포함하는 것을 특징으로 하는 비휘발성 메모리 소자의 제조 방법.
- 제 1항에 있어서, 상기 희생 산화막은 상기 질화막과의 습식 식각 선택비가 높은 물질을 이용하는 것을 특징으로 하는 비휘발성 메모리 소자의 제조 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030088682A KR101025922B1 (ko) | 2003-12-08 | 2003-12-08 | 비휘발성 메모리 소자의 제조 방법 및 비휘발성 메모리 소자 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030088682A KR101025922B1 (ko) | 2003-12-08 | 2003-12-08 | 비휘발성 메모리 소자의 제조 방법 및 비휘발성 메모리 소자 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050055469A true KR20050055469A (ko) | 2005-06-13 |
KR101025922B1 KR101025922B1 (ko) | 2011-03-30 |
Family
ID=37250446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020030088682A KR101025922B1 (ko) | 2003-12-08 | 2003-12-08 | 비휘발성 메모리 소자의 제조 방법 및 비휘발성 메모리 소자 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101025922B1 (ko) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08274198A (ja) * | 1995-03-29 | 1996-10-18 | Lg Semicon Co Ltd | Eepromセル及びその製造方法 |
KR100210857B1 (ko) | 1996-01-03 | 1999-07-15 | 구본준 | 비휘발성 메모리소자 및 그 제조방법 |
-
2003
- 2003-12-08 KR KR1020030088682A patent/KR101025922B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR101025922B1 (ko) | 2011-03-30 |
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