KR960015936B1 - 플레쉬 메모리 및 그 제조방법 - Google Patents
플레쉬 메모리 및 그 제조방법 Download PDFInfo
- Publication number
- KR960015936B1 KR960015936B1 KR1019930016594A KR930016594A KR960015936B1 KR 960015936 B1 KR960015936 B1 KR 960015936B1 KR 1019930016594 A KR1019930016594 A KR 1019930016594A KR 930016594 A KR930016594 A KR 930016594A KR 960015936 B1 KR960015936 B1 KR 960015936B1
- Authority
- KR
- South Korea
- Prior art keywords
- gate
- fluting
- insulating film
- semiconductor substrate
- oxide film
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 39
- 239000000758 substrate Substances 0.000 claims description 39
- 239000010410 layer Substances 0.000 claims description 34
- 239000012535 impurity Substances 0.000 claims description 18
- 239000011229 interlayer Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 150000004767 nitrides Chemical class 0.000 claims description 10
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 8
- 229920005591 polysilicon Polymers 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000010354 integration Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- H10B41/35—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region with a cell select transistor, e.g. NAND
-
- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/32055—Deposition of semiconductive layers, e.g. poly - or amorphous silicon layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/0411—Manufacture or treatment of FETs having insulated gates [IGFET] of FETs having floating gates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/68—Floating-gate IGFETs
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (7)
- 플레쉬 메모리에 있어서, 제1도전형의 반도체 기판상에 형성된 게이트 산화막과, 상기 게이트 산화막상에 스페이서 형상으로 형성된 플루팅 게이트와, 상기 플루팅 게이트 측벽의 반도체 기판에 제1도전형의 불순물로 형성된 선택채널과, 상기 선택채널과 인접한 반도체 기판에 제2도전형의 불순물로 형성된 소오스와, 상기 플루팅 게이트를 중심으로 상기 소오스와는 반대측에 제2도전형의 불순물로 드레인과, 상기 플루팅 게이트의 상부 표면에 도포되어 있는 층간산화막과 상기 게이트 산화막 및 층간산화막 상에 형성된 조절게이트를 구비해야 되는 플레쉬 메모리.
- 제1항에 있어서, 상기 제1 및 제2도전형이 서로 반대 도전형인 것을 특징으로 하는 플레쉬 메모리.
- 플레쉬 메모리의 제조방법에 있어서, 제1도전형의 반도체 기판 표면에 제1절연막을 형성하는 단계와, 상기 제1절연막 표면에 제2절연막을 형성하는 단계와, 드레인과 플루팅 게이트가 형성될 부분의 제2절연막 및 제1절연막을 순차적으로 제거하여 제1절연막 및 제2절연막 패턴을 형성하는 단계와, 상기 제2절연막 패턴과 노출된 반도체 기판상에 게이트 산화막을 형성하는 단계와, 상기 제2절연막 패턴 측벽의 게이트 산화막상에 스페이서 형상의 플루팅 게이트들을 형성하는 단계와, 상기 게이트 산화막 하부의 반도체 기판으로 제2도전형의 불순물을 이온주입하여 상기 플루팅 게이트와 일정부분 중첩되는 드레인을 형성하는 단계와, 상기 제2절연막 패턴과 그 상부에 형성된 게이트 산화막을 순차적으로 제거하여 제1절연막을 노출시키는 단계와, 상기 제1절연막 패턴 하부 반도체 기판에 문턱전압 조절을 위해 제1도전형의 불순물을 이온주입하여 선택채널을 형성하는 단계와, 상기 선택채널들의 소오스 영역으로 예정된 반도체 기판에 제2도전형의 불순물을 이온주입하여 소오스를 형성하는 단계와, 상기 플루팅 게이트의 표면에 층간산화막을 형성하는 단계와, 상기 제1절연막과 층간 산화막상에 조절 게이트를 형성하는 단계를 포함하는 플레쉬 메모리 제조방법.
- 제3항에 있어서, 상기 제1 및 제2도전형이 서로 다른 도전형인 것을 특징으로 하는 플레쉬 메모리 제조방법.
- 제3항에 있어서, 상기 제1절연막이 산화막이고, 제2절연막이 질화막인 것을 특징으로 하는 플레쉬 메모리의 제조방법.
- 제3항에 있어서, 상기 플루팅 게이트가 상기 게이트 산화막상에 폴리 실리콘층을 형성한 후, 이방성 식각 방법으로 전면 식각하여 형성하는 것을 특징으로 하는 플레쉬 메모리의 제조방법.
- 제3항에 있어서, 상기 층간산화막을 플루팅 게이트 표면의 열산화 방법으로 형성하는 것을 특징으로 하는 플레쉬 메모리 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930016594A KR960015936B1 (ko) | 1993-08-25 | 1993-08-25 | 플레쉬 메모리 및 그 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930016594A KR960015936B1 (ko) | 1993-08-25 | 1993-08-25 | 플레쉬 메모리 및 그 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950007166A KR950007166A (ko) | 1995-03-21 |
KR960015936B1 true KR960015936B1 (ko) | 1996-11-23 |
Family
ID=19361945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930016594A KR960015936B1 (ko) | 1993-08-25 | 1993-08-25 | 플레쉬 메모리 및 그 제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960015936B1 (ko) |
-
1993
- 1993-08-25 KR KR1019930016594A patent/KR960015936B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950007166A (ko) | 1995-03-21 |
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