KR100276093B1 - 플라스마 에칭방법 - Google Patents
플라스마 에칭방법 Download PDFInfo
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- KR100276093B1 KR100276093B1 KR1019930021693A KR930021693A KR100276093B1 KR 100276093 B1 KR100276093 B1 KR 100276093B1 KR 1019930021693 A KR1019930021693 A KR 1019930021693A KR 930021693 A KR930021693 A KR 930021693A KR 100276093 B1 KR100276093 B1 KR 100276093B1
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- 238000001020 plasma etching Methods 0.000 title claims abstract description 32
- 239000011148 porous material Substances 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000005530 etching Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 3
- 229920000642 polymer Polymers 0.000 abstract description 15
- 235000012431 wafers Nutrition 0.000 description 72
- 238000010586 diagram Methods 0.000 description 18
- 230000002093 peripheral effect Effects 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- 238000004088 simulation Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000005094 computer simulation Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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- 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
- H01L21/302—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
- H01J37/32449—Gas control, e.g. control of the gas flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32532—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32715—Workpiece holder
- H01J37/32724—Temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
- H01J2237/3343—Problems associated with etching
- H01J2237/3347—Problems associated with etching bottom of holes or trenches
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims (13)
- (정정) 기판을 공정용기 안에 설치된 척전극위에 올려놓는 단계; 공정용기안이 감압상태가 되도록 상기 공정용기를 배기시키는 단계; 공정가스가 샤워전극 내에 만들어진 세공들 내에 퇴적하지 않게 하기 위하여 공정가스가 최소한 620kg/㎡/hr 이상의 질량유량으로 상기 세공들을 통하여 유동하도록 공정가스를 공정용기 안으로 도입시키는 단계; 및 상기 샤워전극과 상기 척전극 사이에 전압을 인가하고, 양전극간에 플라스마를 생성하고, 상기 플라스마 내의 활성종들을 상기기판에 작용시키는 단계를 포함하는 것을 특징으로 하는 플라스마에칭방법.
- 제1항에 있어서, 상기 샤워전극은 플라스마를 생성하는 동안 냉각되는 것을 특징으로 하는 플라스마에칭방법.
- (정정) 제1항에 있어서, 상기 공정가스가 최소한 62Okg/㎡/hr 이상의 질량유량으로 샤워전극 내에 만들어진 세공들의 단차부(段差部)를 통하여 유동하도록 공정가스가 공정용기 안으로 도입되는 것을 특징으로 하는 플라스마에칭방법.
- (정정) 제1항에 있어서, 상기 공정가스는 C, O, H, F 및 Ar로 구성되는 그룹으로부터 선택되는 최소한 둘 이상의 원소를 함유하는 것을 특징으토 하는 플라스마에칭방법.
- (정정) 제4항에 있어서, 상기 공정가스는 CF4가스, CHF3가스, 및 Ar 가스로 구성되는 혼합 가스인 것을 특징으로 하는 플라스마에칭방법.
- (정정) 제1항에 있어서, 0.5Torr 보다 높지 않게 공정용기의 내부 압력을 설정하기 위하여 상기 공정용기가 배기되는 것을 특징으로 하는 플라스마에칭방법.
- (정정) 제1항에 있어서, 공정용기의 내부압력이 플라스마 생성중에 0.15Torr와 3.0Torr 사이의 범위내에 들도록 제어되는 것을 특징으로 하는 플라스마 에칭방법.
- 제1항에 있어서, 상기 공정가스는 세공을 통하여 유동하도록 공급되며, 상기 공정은 주위의 온도와 실질적으로 동일한 온도를 가지는 것을 특징으로하는 플라스마에칭방법.
- 제1항에 있어서, 세공들로부터의 공정가스의 분출영역은 상기 기판의 처리영역보다 큰 것을 특징으로 하는 플라스마에칭방법.
- 제1항에 있어서, 세공들로부터의 공정가스의 분출영역이 샤워전극의 중심으로부터 180mm까지의 범위에 미치는 것을 특징으로 하는 플라스마에칭방법.
- 제1항에 있어서, 세공들로부터의 공정가스의 분출영역이 샤워전극의 중심으로부터 120mm와 180mm사이의 범위에 미치는 것을 특징으로 하는 플라스마에칭방법.
- 제1항에 있어서, 상기 세공들의 개방영역의 합은 100㎟과 120㎟ 사이의 범위내에 있는 것을 특징으로 하는 플라스마에칭방법.
- (정정) 플라스마를 가두는 용기, 상기 용기를 배기시키기 위한 수단, 기판을 지지하기 위한 척전극, 상기 척전극과 함께 플라스마 방전 회로를 형성하는 샤워전극, 상기 샤워전극과 상기 척전극 사이에 플라스마 전압을 인가하기 위한 전원, 용기에 플라스마-생성 가스를 공급하기 위한 가스공급수단, 그리고 상기 가스공급수단을 제어하기 위한 제어수단을 포함하는 에칭장치를 사용한 에칭방법으로서, 상기 샤워전극은: 상기 척전극에 의해 지지되는 기판에 대향하여 위치하는 음극판; 음극판을 냉각시키기 위하여 상기 음극판에 접합된 냉각판; 상기 가스공급수단으로부터 용기 안으로 공급되는 상기 가스를 안내하기 위하여 상기 냉각판 내에 만들어진 다수의 공급구들; 그리고 상기 공급구들과 통하기 위해 상기 음극판 내에 만들어져 상기 척전극에 대향하도록 위치한 다수의 세공들을 포함하며, 여기서, 공급구와 통하는 부위에 단차부를 형성하기 위하여 상기 세공의 지름은 상기 공급구 보다 작고, 상기 세공과 상기 공급구 사이에 형성된 상기 단차부를 통하여 지나가는 플라스마-생성 가스의 질량유량은 상기 가스성분이 상기 단차부내에 퇴적하지 않도록 하기 위하여 상기 제어수단에 의해 최소한 620kg/㎡/hr 이상으로 제어되는 것을 특징으로 하는 플라스마에칭방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92-306121 | 1992-10-19 | ||
JP30612192 | 1992-10-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940010223A KR940010223A (ko) | 1994-05-24 |
KR100276093B1 true KR100276093B1 (ko) | 2000-12-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930021693A KR100276093B1 (ko) | 1992-10-19 | 1993-10-19 | 플라스마 에칭방법 |
Country Status (2)
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US (2) | US5423936A (ko) |
KR (1) | KR100276093B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013062831A2 (en) * | 2011-10-27 | 2013-05-02 | Applied Materials, Inc. | Process chamber for etching low k and other dielectric films |
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- 1993-10-19 US US08/138,039 patent/US5423936A/en not_active Expired - Lifetime
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1995
- 1995-04-27 US US08/429,648 patent/US5593540A/en not_active Expired - Lifetime
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US10923367B2 (en) | 2011-10-27 | 2021-02-16 | Applied Materials, Inc. | Process chamber for etching low K and other dielectric films |
US11410860B2 (en) | 2011-10-27 | 2022-08-09 | Applied Materials, Inc. | Process chamber for etching low k and other dielectric films |
Also Published As
Publication number | Publication date |
---|---|
KR940010223A (ko) | 1994-05-24 |
US5593540A (en) | 1997-01-14 |
US5423936A (en) | 1995-06-13 |
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