KR100526478B1 - 반도체 소자 및 그 제조방법 - Google Patents
반도체 소자 및 그 제조방법 Download PDFInfo
- Publication number
- KR100526478B1 KR100526478B1 KR10-2003-0101101A KR20030101101A KR100526478B1 KR 100526478 B1 KR100526478 B1 KR 100526478B1 KR 20030101101 A KR20030101101 A KR 20030101101A KR 100526478 B1 KR100526478 B1 KR 100526478B1
- Authority
- KR
- South Korea
- Prior art keywords
- gate
- source
- floating gate
- substrate
- sidewall floating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- H10D30/681—Floating-gate IGFETs having only two programming levels
- H10D30/684—Floating-gate IGFETs having only two programming levels programmed by hot carrier injection
- H10D30/685—Floating-gate IGFETs having only two programming levels programmed by hot carrier injection from the channel
-
- 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
- H10D30/687—Floating-gate IGFETs having more than two programming levels
-
- 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
- H10D30/6891—Floating-gate IGFETs characterised by the shapes, relative sizes or dispositions of the floating gate electrode
- H10D30/6894—Floating-gate IGFETs characterised by the shapes, relative sizes or dispositions of the floating gate electrode having one gate at least partly in a trench
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/031—Manufacture or treatment of data-storage electrodes
- H10D64/035—Manufacture or treatment of data-storage electrodes comprising conductor-insulator-conductor-insulator-semiconductor structures
Landscapes
- Semiconductor Memories (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (11)
- 반도체 소자에 있어서,반도체 기판의 트렌치에 배치되는 게이트;상기 게이트 및 기판의 사이에 형성된 제2게이트 산화막;상기 게이트의 하부 측면에 배치되는 사이드월 플로팅 게이트;상기 사이드월 플로팅 게이트와 기판 사이에 형성된 제1게이트 산화막;상기 게이트와 사이드월 플로팅 게이트 사이에 형성된 제2블럭 산화막;상기 사이드월 플로팅 게이트 양측의 반도체 기판에 형성된 소오스/드레인 영역;상기 폴리실리콘 게이트와 사이드월 플로팅 게이트의 측벽에 형성된 스페이서; 및상기 사이드월 스페이서와 상기 사이드월 플로팅 게이트 사이 그리고 상기 기판과 상기 사이드월 플로팅 게이트 사이에 형성된 제1블럭 산화막;을 포함하는 것을 특징으로 하는 반도체 소자.
- 제 1항에 있어서,상기 사이드월 스페이서와 게이트 사이에 폴리 산화막을 더 포함하는 것을 특징으로 하는 반도체 소자.
- 제 1항에 있어서,상기 게이트는 상부의 길이가 하부의 길이보다 긴 T자형 게이트임을 특징으로 하는 반도체 소자.
- 제 1항에 있어서,상기 사이드월 플로팅 게이트는 전자, 정공, 음이온 또는 양이온으로 도핑된 것을 특징으로 하는 반도체 소자.
- 제 1항에 있어서,상기 사이드월 플로팅 게이트의 하부 기판에 가상 소오스/드레인 확장 영역이 형성되는 것을 특징으로 하는 반도체 소자.
- 반도체 기판의 상부에 패드산화막과 패드질화막을 형성하는 단계;상기 패드 질화막의 상부에 포토레지스트를 형성하고 패터닝한 후 상기 포토레지스트를 식각마스크로 상기 패드질화막, 패드산화막 및 기판을 식각하여 상기 기판에 트렌치 채널 영역을 형성하는 단계;상기 트렌치의 양 측벽에 사이드월 플로팅 게이트를 형성하는 단계;상기 기판에 폴리실리콘을 증착하고 패터닝하여 게이트를 형성하는 단계;상기 패드질화막을 제거하고, 상기 게이트의 표면에 폴리 산화막을 형성하는 단계;상기 구조물이 형성된 기판에 불순물 이온을 주입하여 소스/드레인 영역을 형성하는 단계;상기 사이드월 플로팅 게이트에 전하를 주입하는 단계;상기 폴리실리콘 게이트와 사이드월 플로팅 게이트의 측벽에 사이드월 스페이서를 형성하는 단계; 및상기 소오스/드레인 영역 및 게이트에 실리사이드를 형성하는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 사이드월 플로팅 게이트를 형성하기 전에 기판에 산화물을 증착하여 제1블럭 산화막과 제1게이트 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 게이트를 형성하기 전에 게이트가 형성될 영역에 남아 있는 제1게이트 산화막을 제거한 후 산화막을 증착하여 제2게이트 산화막과 제2블럭 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 트렌치 채널 영역은 200 내지 2000Å의 깊이로 식각하여 형성하는 것을 특징으로 하는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 사이드월 플로팅 게이트에 전하를 주입하여 상기 사이드월 프로팅 게이트 아래의 트렌치 채널 영역에 강한 반전층이 형성되어 가상 소오스/드레인 확장 영역이 형성되는 것을 특징으로 하는 반도체 소자의 제조방법.
- 제 10항에 있어서,상기 가상 소오스/드레인 확장 영역은 두께가 5 내지 10nm임을 특징으로 하는 반도체 소자의 제조방법.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0101101A KR100526478B1 (ko) | 2003-12-31 | 2003-12-31 | 반도체 소자 및 그 제조방법 |
| US11/026,972 US7622764B2 (en) | 2003-12-31 | 2004-12-30 | Semiconductor device and fabricating method thereof |
| US12/576,714 US7795084B2 (en) | 2003-12-31 | 2009-10-09 | Semiconductor device and fabricating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0101101A KR100526478B1 (ko) | 2003-12-31 | 2003-12-31 | 반도체 소자 및 그 제조방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20050069149A KR20050069149A (ko) | 2005-07-05 |
| KR100526478B1 true KR100526478B1 (ko) | 2005-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2003-0101101A Expired - Fee Related KR100526478B1 (ko) | 2003-12-31 | 2003-12-31 | 반도체 소자 및 그 제조방법 |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US7622764B2 (ko) |
| KR (1) | KR100526478B1 (ko) |
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| TWI253719B (en) * | 2004-11-15 | 2006-04-21 | Powerchip Semiconductor Corp | Manufacturing method of flash memory |
| US20060197140A1 (en) * | 2005-03-04 | 2006-09-07 | Freescale Semiconductor, Inc. | Vertical transistor NVM with body contact structure and method |
| KR100607351B1 (ko) * | 2005-03-10 | 2006-07-28 | 주식회사 하이닉스반도체 | 플래쉬 메모리 소자의 제조방법 |
| US20060286757A1 (en) * | 2005-06-15 | 2006-12-21 | John Power | Semiconductor product and method for forming a semiconductor product |
-
2003
- 2003-12-31 KR KR10-2003-0101101A patent/KR100526478B1/ko not_active Expired - Fee Related
-
2004
- 2004-12-30 US US11/026,972 patent/US7622764B2/en not_active Expired - Lifetime
-
2009
- 2009-10-09 US US12/576,714 patent/US7795084B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20050151185A1 (en) | 2005-07-14 |
| US7795084B2 (en) | 2010-09-14 |
| US20100029051A1 (en) | 2010-02-04 |
| KR20050069149A (ko) | 2005-07-05 |
| US7622764B2 (en) | 2009-11-24 |
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