KR20050044186A - 이이피롬 셀의 게이트 형성 방법 - Google Patents
이이피롬 셀의 게이트 형성 방법 Download PDFInfo
- Publication number
- KR20050044186A KR20050044186A KR1020030078776A KR20030078776A KR20050044186A KR 20050044186 A KR20050044186 A KR 20050044186A KR 1020030078776 A KR1020030078776 A KR 1020030078776A KR 20030078776 A KR20030078776 A KR 20030078776A KR 20050044186 A KR20050044186 A KR 20050044186A
- Authority
- KR
- South Korea
- Prior art keywords
- floating gate
- sidewall
- nitride film
- forming
- oxide film
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 150000004767 nitrides Chemical class 0.000 claims abstract description 31
- 125000006850 spacer group Chemical group 0.000 claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 238000000151 deposition Methods 0.000 claims abstract description 11
- 238000001312 dry etching Methods 0.000 claims abstract description 11
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 10
- 229920005591 polysilicon Polymers 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000005530 etching Methods 0.000 claims abstract description 5
- 241000293849 Cordylanthus Species 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 229910004679 ONO2 Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 125000001893 nitrooxy group Chemical group [O-][N+](=O)O* 0.000 description 2
- 208000037062 Polyps Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007257 malfunction Effects 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
- H01L29/66—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
- H01L29/6656—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using multiple spacer layers, e.g. multiple sidewall spacers
Landscapes
- 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)
- ONO를 사이드 월 구조로 갖는 이이피롬에 있어서,플로팅 게이트 전극 형성 후,상기 플로팅 게이트 전극 상에 산화막을 증착하는 단계와,상기 산화막을 건식식각하여 사이드 월 산화막스페이서를 형성하는 단계와,상기 결과물 상에 질화막을 증착하는 단계와,상기 질화막을 건식식각하여 사이드 월 질화막스페이서를 형성하는 단계와,상기 결과물 상에 폴리실리콘을 증착하는 단계와,상기 결과물을 전면 식각하여 콘트롤 게이트 전극을 형성하는 단계를 포함함으로써 후속 산화 공정시 산소가 플로팅 게이트 에지로 유입되는 것을 방지하는 이이피롬 셀의 게이트 형성 방법.
- 제1항에 있어서, 플로팅 게이트 전극 형성시 도핑된 폴리실리콘을 이용하여 전극을 형성하는 것을 특징으로 하는 이이피롬 셀의 게이트 형성 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030078776A KR100994396B1 (ko) | 2003-11-07 | 2003-11-07 | 이이피롬 셀의 게이트 형성 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030078776A KR100994396B1 (ko) | 2003-11-07 | 2003-11-07 | 이이피롬 셀의 게이트 형성 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050044186A true KR20050044186A (ko) | 2005-05-12 |
KR100994396B1 KR100994396B1 (ko) | 2010-11-15 |
Family
ID=37244580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020030078776A KR100994396B1 (ko) | 2003-11-07 | 2003-11-07 | 이이피롬 셀의 게이트 형성 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100994396B1 (ko) |
-
2003
- 2003-11-07 KR KR1020030078776A patent/KR100994396B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR100994396B1 (ko) | 2010-11-15 |
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