KR950010008A - 반도체 장치의 플라즈마 처리동안 입자오염을 줄이는 방법 - Google Patents

반도체 장치의 플라즈마 처리동안 입자오염을 줄이는 방법 Download PDF

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KR950010008A
KR950010008A KR1019940022425A KR19940022425A KR950010008A KR 950010008 A KR950010008 A KR 950010008A KR 1019940022425 A KR1019940022425 A KR 1019940022425A KR 19940022425 A KR19940022425 A KR 19940022425A KR 950010008 A KR950010008 A KR 950010008A
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chamber
wafer
processing
particles
clamping device
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KR1019940022425A
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굽타 아난드
스티븐 로데스 챨스
예 얀
엠. 라누쟈 조세프
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제임스 조셉 드롱
어플라이드 머티어리얼스, 인코포레이티드
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Publication of KR950010008A publication Critical patent/KR950010008A/ko

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
    • 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
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
    • H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
    • H01L21/68721—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge clamping, e.g. clamping ring
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
    • 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
    • H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
    • H01J37/32816—Pressure
    • H01J37/32834—Exhausting
    • 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
    • H01L21/02041—Cleaning
    • H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
    • H01L21/02046—Dry cleaning 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
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/68—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for positioning, orientation or alignment
    • 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
    • H01J2237/02—Details
    • H01J2237/022—Avoiding or removing foreign or contaminating particles, debris or deposits on sample or tube

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Drying Of Semiconductors (AREA)

Abstract

반도체 웨이퍼 위로부터 입자, 특히 웨이퍼 처리동안 플라즈마 챔버내로 접속된 입자를 제거하는 기술, 접속된 입자는 통상 챔버로부터 배기된 가스와 함께 모두 끌어내지지 않는데, 부분적으로 외주 초점 링 및 클램핑 장치가 그들의 흐름을 방해하기 때문이다. 본 발명의 방법에서, 초점링 및 클램핑 장치는 처리가 끝나고 고주파(rf) 파워가 처리챔버로부터 차단되기 전에 상승된다. 집속된 입자는 이때 유입된 불활성 가스와 함께 쉽게 챔버로부터 흘러나가게 되고 웨이퍼의 입자 오염 수준이 상당히 감소된다.

Description

반도체 장치의 플라즈마 처리동안 입자오염을 줄이는 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 방법이 사용되는 플라즈마 처리챔버형에 대한 부분 단면 사시도
제2도는 처리되는 웨이퍼와 관련한 초점 링 및 클램핑 링을 나타내는 제1도의 일부에 대한 확대도
제3도는 제2도와 유사하지만, 본 발명에 따라 상승된 초점 링 및 클램핑 링을 알아내는 사시도

Claims (6)

  1. 반도체 웨이퍼가 외주 장치에 의해 제자리에 고정되는 처리 쳄버로부터 원치않는 오염입자를 제거하기 위한 방법에 있어서, 연속적으로 챔버를 진공화시키는 단계; 웨이퍼에 대해 냉각 가스의 흐름을 차단하는 단계; 웨이퍼 위로 외주 장치를 들어올리는 단계; 가스를 챔버에 공급하는 단계; 웨이퍼 위 입자들이 외주 장치 바로 아래로 자유롭게 흘러 챔버밖으로 빠져나가도록 챔버를 계속해서 진공화하는 단계를 구성되는 것을 특징으로 하는 처리 챔버로부터 원치않은 오염입자를 제거하기 위한 방법.
  2. 제1항에 있어서, 챔버에 가스를 공급하는 단계는 외주 장치를 들어 올리기에 앞서 불활성 가스의 소스에 스위칭하는 것을 포함하는 것을 특징으로 하는 처리쳄버로부터 원치않은 오염입자를 제거하기 위한 방법.
  3. 플라즈마 처리챔버로부터 원치않는 오염입자를 제거하기 위한 벙법에 있어서, 처리 챔버내의 지지대에 반도체 웨이퍼를 위치시키는 단계; 처리의 균일성을 강화하기 위하여 외주에서 웨이퍼 위로 돌출해 있는 초점링을 포함한 클램핑 장치를 웨이퍼 위로 낮추는 단계; 처리가스를 챔버내로 도입하는 단계; 웨이퍼 처리를 강화하는 플라즈마 영역을 떠받치기 위하여 고주파(rf) 파워를 챔버 전극에 가하는 단계; 처리동안 챔버내 요구되는 압력을 유지하기 위하여 배기 포트를 통해 챔버를 연속적으로 진공화하는 단계; 처리가 끝나고 챔버 전극으로부터 rf파워를 차단하기 전에, 웨이퍼에 공급되는 어떤 냉각 가스의 흐름을 차단하고 웨이퍼로부터 클램핑 장치 및 초점링을 들어올려서 처리동안 웨이퍼 위에 집속된 입자가 클램핑 장치 및 초점 링 아래로 흘러나가 배기 포트를 통해 빠져나가는 단계로 구성되는 것을 특징으로 하는 플라즈마 처리챔버로부터 원치않는 오염 입자를 제거하기 위한 방법.
  4. 제3항에 있어서, 클램핑 장치를 들어올리기에 앞서 불활성 가스의 공급으로 처리가스의 공급을 스위칭하는 단계를 포함하는 것을 특징으로 하는 플라즈마 처리챔버로부터 원치않은 오염입자를 제거하기 위한 방법.
  5. 제4항에 있어서, 불활성 가스의 흐름 속도를 증가시키는 단계를 포함하는 것을 특징으로 하는 플라즈마 처리 쳄버로부터 원치않은 오염입자를 제거하기 위한 방법.
  6. 제5항에 있어서, 입자를 배기 포트로 쓸어넣기 위하여 적어도 몇초의 주기동안 증가된 흐름속도를 유지하는 단계를 포함하는 것을 특징으로 하는 플라즈마 처리챔버로부터 원치않은 오염입자를 제거하기 위한 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940022425A 1993-09-21 1994-09-07 반도체 장치의 플라즈마 처리동안 입자오염을 줄이는 방법 KR950010008A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/124,900 1993-09-21
US08/124,900 US5423918A (en) 1993-09-21 1993-09-21 Method for reducing particulate contamination during plasma processing of semiconductor devices

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KR950010008A true KR950010008A (ko) 1995-04-26

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US (1) US5423918A (ko)
EP (1) EP0649165A1 (ko)
JP (1) JPH07153740A (ko)
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US5423918A (en) 1995-06-13
JPH07153740A (ja) 1995-06-16
EP0649165A1 (en) 1995-04-19

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