KR100967667B1 - 반도체소자의 소자분리막 형성방법 - Google Patents
반도체소자의 소자분리막 형성방법 Download PDFInfo
- Publication number
- KR100967667B1 KR100967667B1 KR1020030021860A KR20030021860A KR100967667B1 KR 100967667 B1 KR100967667 B1 KR 100967667B1 KR 1020030021860 A KR1020030021860 A KR 1020030021860A KR 20030021860 A KR20030021860 A KR 20030021860A KR 100967667 B1 KR100967667 B1 KR 100967667B1
- Authority
- KR
- South Korea
- Prior art keywords
- polysilicon layer
- forming
- spacer
- pattern
- semiconductor substrate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000004065 semiconductor Substances 0.000 title claims abstract description 31
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 43
- 229920005591 polysilicon Polymers 0.000 claims abstract description 43
- 238000002955 isolation Methods 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 15
- 238000005530 etching Methods 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 150000004767 nitrides Chemical class 0.000 claims description 17
- 238000001312 dry etching Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 17
- 229910052710 silicon Inorganic materials 0.000 description 17
- 239000010703 silicon Substances 0.000 description 17
- 230000008021 deposition Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- 241000293849 Cordylanthus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Images
Classifications
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76232—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials of trenches having a shape other than rectangular or V-shape, e.g. rounded corners, oblique or rounded trench walls
- H01L21/76235—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials of trenches having a shape other than rectangular or V-shape, e.g. rounded corners, oblique or rounded trench walls trench shape altered by a local oxidation of silicon process step, e.g. trench corner rounding by LOCOS
-
- 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
-
- 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
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32134—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by liquid etching only
-
- 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
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
- H01L21/32137—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas of silicon-containing layers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Element Separation (AREA)
Abstract
Description
폴리실리콘층의 증착은 나중에 실리콘기판의 트렌치 깊이보다 더 두껍게 증착을 진행한다. 즉, 트렌치 건식각 깊이가 3500 Å이면 폴리실리콘층의 증착두께는 트렌치 건식각 깊이보다 약 700Å 정도 더 두껍게 증착을 진행하여야 한다.
Claims (9)
- 반도체기판상에 패드산화막과 폴리실리콘층을 적층하는 단계;상기 폴리실리콘층상에 소자분리영역을 한정하는 감광막패턴을 형성하는 단계;상기 감광막패턴을 마스크로 상기 폴리실리콘층과 패드산화막을 선택적으로 제거하여 상기 반도체기판 일부를 드러나게 하는 단계;상기 감광막패턴을 제거한후 일부가 선택적으로 제거된 폴리실리콘층패턴과 패드산화막패턴의 측벽에 스페이서를 형성하는 단계;상기 스페이서를 마스크로 상기 드러난 반도체기판부분을 선택적으로 제거하여 반도체기판내에 트렌치를 형성한후 상기 스페이서를 제거하는 단계;산화공정을 진행하여 전체 구조의 표면상에 산화막을 형성한후 그 위에 평탄화산화막을 형성하여 갭매립시키는 단계;평탄화공정을 통해 상기 폴리실리콘층패턴지역에서 식각이 정지되도록 상기 평탄화산화막과 산화막을 선택적으로 제거하는 단계; 및상기 잔류하는 폴리실리콘층패턴을 제거하여 소자분리막을 형성하는 단계;를 포함하여 구성되는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제1항에 있어서, 상기 폴리실리콘층 식각시에 Cl2, HBr, He, O2 및 Ar으로 활성화된 플라즈마를 이용한 건식식각에 의해 진행하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제1항에 있어서, 상기 스페이서는 폴리실리콘층의 패터닝후 전체 구조의 상면에 100∼500Å 두께의 질화막을 형성한후 이를 블랭킷 식각공정에 의해 형성하는 것을 특징으로 하는 반도체소자의 소자분리막 형성방법.
- 제3항에 있어서, 상기 스페이서 건식식각시에 CHF3, CF4 및 Ar을 이용한 활성화된 플라즈마를 이용하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제4항에 있어서, 상기 건식식각시에 CxFy 계열의 가스(1≤x≤5, 4≤y≤8), O2 및 N2 가스를 더 추가하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제4항에 있어서, 상기 트렌치 형성시에 Cl2, HBr, O2 및 N2 가스의 조합으로 이루어진 활성화된 플라즈마를 이용한 건식식각공정을 진행하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제4항에 있어서, 상기 잔류하는 폴리실리콘층패턴제거시에 질산 딥(dip)공정을 이용하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제1항에 있어서, 상기 산화공정을 통해 스페이서가 제거된 부분이 라운드지게 형성되는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
- 제1항에 있어서, 상기 폴리실리콘층은 후속공정에서의 트렌치식각시의 깊이보다 700∼2,000Å의 두께로 증착하는 것을 특징으로하는 반도체소자의 소자분리막 형성방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030021860A KR100967667B1 (ko) | 2003-04-08 | 2003-04-08 | 반도체소자의 소자분리막 형성방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030021860A KR100967667B1 (ko) | 2003-04-08 | 2003-04-08 | 반도체소자의 소자분리막 형성방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040087457A KR20040087457A (ko) | 2004-10-14 |
KR100967667B1 true KR100967667B1 (ko) | 2010-07-07 |
Family
ID=37369592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020030021860A KR100967667B1 (ko) | 2003-04-08 | 2003-04-08 | 반도체소자의 소자분리막 형성방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100967667B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100577306B1 (ko) * | 2004-12-21 | 2006-05-10 | 동부일렉트로닉스 주식회사 | 반도체 소자의 격리막 형성방법 |
KR101001464B1 (ko) | 2008-08-01 | 2010-12-14 | 주식회사 하이닉스반도체 | 반도체 메모리 소자 및 그의 형성방법 |
CN113035698A (zh) * | 2019-12-24 | 2021-06-25 | 中芯国际集成电路制造(上海)有限公司 | 一种nand闪存的形成方法及nand闪存 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020052677A (ko) * | 2000-12-26 | 2002-07-04 | 박종섭 | 반도체 소자의 소자 분리막 형성 방법 |
KR20030001965A (ko) * | 2001-06-28 | 2003-01-08 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
-
2003
- 2003-04-08 KR KR1020030021860A patent/KR100967667B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020052677A (ko) * | 2000-12-26 | 2002-07-04 | 박종섭 | 반도체 소자의 소자 분리막 형성 방법 |
KR20030001965A (ko) * | 2001-06-28 | 2003-01-08 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20040087457A (ko) | 2004-10-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4476196B2 (ja) | 半導体装置の製造方法 | |
US7041573B2 (en) | Method for fabricating semiconductor device having trench isolation | |
KR100967667B1 (ko) | 반도체소자의 소자분리막 형성방법 | |
US6905943B2 (en) | Forming a trench to define one or more isolation regions in a semiconductor structure | |
KR100979228B1 (ko) | 반도체소자의 소자분리막 형성방법 | |
KR100967666B1 (ko) | 반도체소자의 소자분리막 형성방법 | |
KR101078720B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR100967670B1 (ko) | 반도체 소자의 얕은 트랜치 소자분리막 형성방법 | |
JP3114062B2 (ja) | 半導体装置の隔離膜形成方法 | |
KR100792376B1 (ko) | 플래쉬 메모리 소자의 소자분리막 형성방법 | |
KR100567026B1 (ko) | 얕은 트렌치 아이솔레이션 코너의 모우트 개선방법 | |
KR100652288B1 (ko) | 반도체 소자의 소자 분리막 제조 방법 | |
KR100967672B1 (ko) | 반도체 소자의 얕은 트랜치 소자분리막 형성방법 | |
KR100451519B1 (ko) | 반도체소자의 소자분리막 형성방법 | |
KR100944667B1 (ko) | Sti 에지 모트 방지 방법 | |
KR100881414B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR100586072B1 (ko) | 얕은 트렌치 아이솔레이션 코너의 모우트 개선방법 | |
KR100480896B1 (ko) | 반도체소자의 소자분리막 형성방법 | |
KR100881413B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
KR100621756B1 (ko) | 컨택 스파이킹을 방지할 수 있는 반도체 소자의 제조 방법 | |
KR100788359B1 (ko) | 반도체 소자의 제조 방법 | |
KR100567027B1 (ko) | 얕은 트렌치 아이솔레이션 구조를 사용하는 소자에서 험프특성을 최소화하는 방법 | |
KR100561974B1 (ko) | 반도체 소자의 제조방법 | |
KR100922074B1 (ko) | 반도체 소자의 소자 분리막 형성방법 | |
KR100587597B1 (ko) | 반도체 소자의 소자분리막 형성방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
N231 | Notification of change of applicant | ||
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20130524 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20140519 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20150518 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20160518 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20170529 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20180517 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20190516 Year of fee payment: 10 |