WO2007143072A3 - Wet etch suitable for creating square cuts in si and resulting structures - Google Patents
Wet etch suitable for creating square cuts in si and resulting structures Download PDFInfo
- Publication number
- WO2007143072A3 WO2007143072A3 PCT/US2007/012904 US2007012904W WO2007143072A3 WO 2007143072 A3 WO2007143072 A3 WO 2007143072A3 US 2007012904 W US2007012904 W US 2007012904W WO 2007143072 A3 WO2007143072 A3 WO 2007143072A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wet etch
- resulting structures
- square cuts
- etch suitable
- creating square
- Prior art date
Links
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
- H01L21/02—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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
- B81C1/00555—Achieving a desired geometry, i.e. controlling etch rates, anisotropy or selectivity
- B81C1/00626—Processes for achieving a desired geometry not provided for in groups B81C1/00563 - B81C1/00619
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/08—Etching
- C30B33/10—Etching in solutions or melts
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
- H01L21/30608—Anisotropic liquid etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2203/00—Basic microelectromechanical structures
- B81B2203/03—Static structures
- B81B2203/0323—Grooves
- B81B2203/033—Trenches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2203/00—Basic microelectromechanical structures
- B81B2203/03—Static structures
- B81B2203/0323—Grooves
- B81B2203/0338—Channels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Geometry (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Weting (AREA)
- Element Separation (AREA)
- Semiconductor Memories (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009513289A JP5278768B2 (en) | 2006-06-02 | 2007-05-31 | Method for making a right angle undercut in single crystal silicon |
EP07795580A EP2030225A2 (en) | 2006-06-02 | 2007-05-31 | Wet etch suitable for creating square cuts in si and resulting structures |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/445,718 | 2006-06-02 | ||
US11/445,718 US7628932B2 (en) | 2006-06-02 | 2006-06-02 | Wet etch suitable for creating square cuts in si |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2007143072A2 WO2007143072A2 (en) | 2007-12-13 |
WO2007143072A3 true WO2007143072A3 (en) | 2008-02-14 |
WO2007143072B1 WO2007143072B1 (en) | 2008-04-10 |
Family
ID=38663107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/012904 WO2007143072A2 (en) | 2006-06-02 | 2007-05-31 | Wet etch suitable for creating square cuts in si and resulting structures |
Country Status (7)
Country | Link |
---|---|
US (4) | US7628932B2 (en) |
EP (1) | EP2030225A2 (en) |
JP (1) | JP5278768B2 (en) |
KR (1) | KR101072760B1 (en) |
CN (2) | CN101461040A (en) |
TW (1) | TWI356451B (en) |
WO (1) | WO2007143072A2 (en) |
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- 2006-06-02 US US11/445,718 patent/US7628932B2/en not_active Expired - Fee Related
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2007
- 2007-05-31 CN CNA200780020525XA patent/CN101461040A/en active Pending
- 2007-05-31 KR KR1020087031282A patent/KR101072760B1/en not_active IP Right Cessation
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- 2007-05-31 EP EP07795580A patent/EP2030225A2/en not_active Withdrawn
- 2007-05-31 WO PCT/US2007/012904 patent/WO2007143072A2/en active Application Filing
- 2007-05-31 CN CN201410209104.3A patent/CN103956321A/en active Pending
- 2007-06-01 TW TW096119774A patent/TWI356451B/en active
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2009
- 2009-09-23 US US12/565,557 patent/US7973388B2/en active Active
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2011
- 2011-07-05 US US13/176,416 patent/US8294246B2/en active Active
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20020001968A1 (en) * | 1999-08-30 | 2002-01-03 | Whonchee Lee | Compositions for etching silicon with high selectivity to oxides and methods of using same |
US20030003759A1 (en) * | 2001-06-27 | 2003-01-02 | Infineon Technologies North America Corp | Etch selectivity inversion for etching along crystallographic directions in silicon |
US20050208727A1 (en) * | 2004-03-18 | 2005-09-22 | Nanya Technology Corporation | Method of etching bottle trench and fabricating capacitor with same |
Also Published As
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JP2009540539A (en) | 2009-11-19 |
US20120322263A1 (en) | 2012-12-20 |
KR20090015133A (en) | 2009-02-11 |
US20070278183A1 (en) | 2007-12-06 |
US7973388B2 (en) | 2011-07-05 |
CN101461040A (en) | 2009-06-17 |
WO2007143072B1 (en) | 2008-04-10 |
TWI356451B (en) | 2012-01-11 |
JP5278768B2 (en) | 2013-09-04 |
TW200809952A (en) | 2008-02-16 |
US20110260298A1 (en) | 2011-10-27 |
CN103956321A (en) | 2014-07-30 |
US8294246B2 (en) | 2012-10-23 |
WO2007143072A2 (en) | 2007-12-13 |
US20100013061A1 (en) | 2010-01-21 |
EP2030225A2 (en) | 2009-03-04 |
US7628932B2 (en) | 2009-12-08 |
KR101072760B1 (en) | 2011-10-11 |
US8450214B2 (en) | 2013-05-28 |
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