KR100568425B1 - 플래시 소자의 비트라인 형성 방법 - Google Patents
플래시 소자의 비트라인 형성 방법 Download PDFInfo
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- KR100568425B1 KR100568425B1 KR1020030043798A KR20030043798A KR100568425B1 KR 100568425 B1 KR100568425 B1 KR 100568425B1 KR 1020030043798 A KR1020030043798 A KR 1020030043798A KR 20030043798 A KR20030043798 A KR 20030043798A KR 100568425 B1 KR100568425 B1 KR 100568425B1
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- Prior art keywords
- bit line
- film
- hard mask
- forming
- metal
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000015572 biosynthetic process Effects 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 239000002184 metal Substances 0.000 claims abstract description 64
- 239000010410 layer Substances 0.000 claims abstract description 62
- 239000011229 interlayer Substances 0.000 claims abstract description 42
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000005530 etching Methods 0.000 claims description 34
- 230000004888 barrier function Effects 0.000 claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 238000005108 dry cleaning Methods 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 69
- 239000000463 material Substances 0.000 description 8
- 150000004767 nitrides Chemical class 0.000 description 6
- 229920002120 photoresistant polymer Polymers 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000007517 polishing process Methods 0.000 description 4
- 239000005368 silicate glass Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- GDFCWFBWQUEQIJ-UHFFFAOYSA-N [B].[P] Chemical compound [B].[P] GDFCWFBWQUEQIJ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- 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
-
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
-
- 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
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
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- 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)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (5)
- 비트라인 콘택 플러그가 형성된 반도체 기판상에 베리어막, 층간 절연막 및 금속막을 이용한 금속 하드 마스크막을 순차적으로 형성하는 단계와,상기 금속 하드 마스크막을 패터닝하여 상기 비트라인 콘택 플러그와 대응되는 비트라인영역을 개방하는 금속 하드 마스크막 패턴을 형성하는 단계와,상기 금속 하드 마스크막 패턴을 식각마스크로 하는 식각공정을 통해 층간 절연막 및 베리어막을 식각하여 비트라인용 트렌치를 형성하는 단계와,상기 비트라인용 트렌치가 매립되도록 비트라인용 금속막을 형성하는 단계와,평탄화 공정을 실시하여 상기 층간 절연막 상의 상기 비트라인용 금속막 및 상기 금속 하드 마스크막 패턴을 제거하는 단계를 포함하는 플래시 소자의 비트라인 형성 방법.
- 제 1 항에 있어서, 상기 비트라인용 트렌치를 형성하는 단계후와, 상기 비트라인용 금속막을 형성하는 단계전에,플라즈마를 이용한 건식 세정공정 또는 고주파 스퍼터링에 의한 세정공정을 실시하여 상기 비트라인용 트렌치 내부를 세정하는 단계를 더 포함하는 플래시 소자의 비트라인 형성 방법.
- 제 2 항에 있어서,상기 건식 세정공정은 CF4와 O2 혼합 가스 및 NF3가스를 이용하여 실시하고, 상기 고주파 스퍼터링에 의한 세정공정은 Ar가스를 이용하여 실시하는 플래시 소자의 비트라인 형성 방법.
- 제 1 항에 있어서,상기 금속 하드 마스크막과 상기 비트라인용 금속막은 동일한 금속물질을 사용하여 형성하는 플래시 소자의 비트라인 형성 방법.
- 제1 항에 있어서, 상기 금속 하드 마스크막은 텅스텐을 이용하여 형성하되, 후속 상기 층간 절연막 식각시 충분한 식각 베리어로 견딜 수 있도록 500 내지 1000Å 두께로 형성하는 플래시 소자의 비트라인 형성 방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030043798A KR100568425B1 (ko) | 2003-06-30 | 2003-06-30 | 플래시 소자의 비트라인 형성 방법 |
US10/734,389 US6964921B2 (en) | 2003-06-30 | 2003-12-12 | Method for forming bit line of flash device |
DE10358767A DE10358767A1 (de) | 2003-06-30 | 2003-12-12 | Verfahren zum Bilden einer Bit-Leitung eines Flashbauelements |
JP2003416902A JP2005026659A (ja) | 2003-06-30 | 2003-12-15 | フラッシュ素子のビットライン形成方法 |
TW092136410A TWI243445B (en) | 2003-06-30 | 2003-12-22 | Method for forming bit line of flash device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030043798A KR100568425B1 (ko) | 2003-06-30 | 2003-06-30 | 플래시 소자의 비트라인 형성 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050002420A KR20050002420A (ko) | 2005-01-07 |
KR100568425B1 true KR100568425B1 (ko) | 2006-04-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020030043798A KR100568425B1 (ko) | 2003-06-30 | 2003-06-30 | 플래시 소자의 비트라인 형성 방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6964921B2 (ko) |
JP (1) | JP2005026659A (ko) |
KR (1) | KR100568425B1 (ko) |
DE (1) | DE10358767A1 (ko) |
TW (1) | TWI243445B (ko) |
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KR100413830B1 (ko) | 2001-04-30 | 2003-12-31 | 삼성전자주식회사 | 트렌치 소자분리 구조를 가지는 반도체 소자 및 그 제조방법 |
US7005372B2 (en) * | 2003-01-21 | 2006-02-28 | Novellus Systems, Inc. | Deposition of tungsten nitride |
US20030062596A1 (en) * | 2001-10-02 | 2003-04-03 | Actel Corporation | Metal-to-metal antifuse employing carbon-containing antifuse material |
-
2003
- 2003-06-30 KR KR1020030043798A patent/KR100568425B1/ko not_active IP Right Cessation
- 2003-12-12 DE DE10358767A patent/DE10358767A1/de not_active Ceased
- 2003-12-12 US US10/734,389 patent/US6964921B2/en not_active Expired - Fee Related
- 2003-12-15 JP JP2003416902A patent/JP2005026659A/ja active Pending
- 2003-12-22 TW TW092136410A patent/TWI243445B/zh not_active IP Right Cessation
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DE10358767A1 (de) | 2005-01-20 |
US20040266106A1 (en) | 2004-12-30 |
JP2005026659A (ja) | 2005-01-27 |
KR20050002420A (ko) | 2005-01-07 |
TWI243445B (en) | 2005-11-11 |
US6964921B2 (en) | 2005-11-15 |
TW200503155A (en) | 2005-01-16 |
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