KR20220025163A - 에칭 장치 - Google Patents
에칭 장치 Download PDFInfo
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- KR20220025163A KR20220025163A KR1020227004299A KR20227004299A KR20220025163A KR 20220025163 A KR20220025163 A KR 20220025163A KR 1020227004299 A KR1020227004299 A KR 1020227004299A KR 20227004299 A KR20227004299 A KR 20227004299A KR 20220025163 A KR20220025163 A KR 20220025163A
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Abstract
Description
도 2는, 플라즈마 처리 장치의 일례를 나타내는 도이다.
도 3은, (a)부, (b)부, (c)부를 구비하고, 도 1에 나타내는 각 공정의 실시 전 및 실시 후의 피처리체 상태를 나타내는 단면도이다.
도 4는, (a)부, (b)부를 구비하고, 도 1에 나타내는 각 공정의 실시 후의 피처리체 상태를 나타내는 단면도이다.
도 5는, 도 1에 나타내는 보호막을 형성하는 시퀀스에 있어서의 보호막의 형성의 모습을 모식적으로 나타내는 도이다.
도 6은, 도 1에 나타내는 방법에 있어서의 에칭의 원리를 나타내는 도이다.
12…처리 용기
12e…배기구
12g…반입 출구
14…지지부
18a…제1 플레이트
18b…제2 플레이트
22…직류 전원
23…스위치
24…냉매 유로
26a…배관
26b…배관
28…가스 공급 라인
30…상부 전극
32…절연성 차폐 부재
34…전극판
34a…가스 토출 구멍
36…전극 지지체
36a…가스 확산실
36b…가스 통류 구멍
36c…가스 도입구
38…가스 공급관
40…가스 소스군
42…밸브군
44…유량 제어기군
46…디포지션 실드
48…배기 플레이트
50…배기 장치
52…배기관
54…게이트 밸브
62…제1 고주파 전원
64…제2 고주파 전원
66…정합기
68…정합기
70…전원
AL…반사 방지막
ALM…마스크
Cnt…제어부
EL…피에칭층
ESC…정전 척
FR…포커스 링
G1…제1 가스
HP…히터 전원
HT…히터
LE…하부 전극
Ly1…층
Ly2…층
MK1…마스크
MK2…마스크
MK3…마스크
MK4…마스크
MS…마스크
OL…유기막
OLM…마스크
OP1…개구
OP2…개구
OP3…개구
OP4…개구
P1…플라즈마
PD…재치대
R1…영역
R2…영역
R3…영역
S…처리 공간
SB…기판
SX…보호막
W…웨이퍼
Claims (18)
- 적어도 하나의 가스 도입구 및 적어도 하나의 가스 출구를 갖는 적어도 하나의 처리 용기;
상기 처리 용기 내에 제공되는 기판 지지부;
플라즈마 생성기; 및
제어부를 포함하고,
상기 제어부는:
실리콘-함유층 및 상기 실리콘-함유층 상의 표면층 부분을 갖는 기판을 제공하는 것;
상기 표면층 부분 상에 보호막을 형성하는 것; 그리고,
상기 표면층 부분을 통해 상기 실리콘-함유층을 에칭하는 것을 수행하도록 구성되고,
상기 보호막을 형성하는 것은:
상기 표면층 부분 상에 전구체 층을 형성하는 것; 그리고,
상기 전구체 층을 제1 플라즈마에 노출시킴으로써 상기 전구체 층을 상기 보호막으로 변환하는 것을 포함하고,
상기 실리콘-함유층을 에칭하는 것은:
개질된 실리콘-함유층을 형성하기 위해 상기 제1 플라즈마와 상이한 제2 플라즈마에 상기 실리콘-함유층을 노출시킴으로써 상기 실리콘-함유층을 개질시키는 것; 그리고,
상기 개질된 실리콘-함유층을 상기 제1 플라즈마 및 상기 제2 플라즈마와 상이한 제3 플라즈마에 노출시킴으로써 상기 개질된 실리콘-함유층을 제거하는 것을 포함하는, 에칭 장치. - 청구항 1에 있어서,
상기 제어부는, 상기 표면층 부분 상에 상기 보호막을 형성한 후, 상기 실리콘-함유층의 상기 에칭을 수행하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 제어부는 상기 보호막을 형성하는 것에 있어서, 상기 보호막을 컨포멀하게 형성하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 제어부는, 상기 전구체 층을 형성하는 것에 있어서, 플라즈마를 이용하지 않고 상기 전구체 층을 형성하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 전구체 층을 상기 보호막으로 변환하는 것에 있어서, 상기 제어부는 상기 기판의 온도를 0℃이상 및 상기 표면층 부분에 포함된 물질의 유리 전이 온도 이하로 제어하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 전구체 층을 상기 보호막으로 변환하는 것에 있어서, 상기 제어부는 상기 기판의 온도를 0℃ 이상 200℃ 이하로 제어하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 보호막을 형성하는 것에 있어서, 상기 제어부는 상기 전구체 층을 형성하는 것 및 상기 전구체 층을 상기 보호막으로 변환하는 것을 포함하는 공정을 복수회 반복하여 실행하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 제어부는, 상기 보호막의 상기 형성 후 및 상기 실리콘-함유층의 상기 에칭 전에 상기 표면층 부분의 하부에 형성된 상기 보호막을 에칭하는 것을 포함하는 공정을 수행하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 실리콘-함유층의 상기 에칭에 있어서, 상기 제어부는 상기 개질된 실리콘-함유층의 상기 형성 및 상기 개질된 실리콘-함유층의 상기 제거를 포함하는 공정을 복수회 반복하여 실행하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 보호막의 상기 형성과 상기 실리콘-함유층의 상기 에칭을 하나의 처리 용기에서 수행하는, 에칭 장치. - 청구항 4에 있어서,
상기 제어부는 상기 전구체 층을 형성하는 것에 있어서, 아미노실란계 가스를 이용하여 상기 전구체 층을 형성하도록 구성되는, 에칭 장치. - 청구항 4에 있어서,
상기 제어부는 상기 전구체 층을 형성하는 것에 있어서, 1 내지 3개의 실리콘 원자를 갖는 아미노실란을 포함하는 아미노실란계 가스를 이용하여 상기 전구체 층을 형성하도록 구성되는, 에칭 장치. - 청구항 4에 있어서,
상기 제어부는 상기 전구체 층을 형성하는 것에 있어서, 1 내지 3개의 아미노기를 갖는 아미노실란을 포함하는 아미노실란계 가스를 이용하여 상기 전구체 층을 형성하도록 구성되는, 에칭 장치. - 청구항 1에 있어서,
상기 제1 플라즈마는 산소 원자 및 탄소 원자를 포함하는 가스의 플라즈마인, 에칭 장치. - 청구항 1에 있어서,
상기 제2 플라즈마는 플루오로카본계 가스 및 희가스를 포함하는 가스의 플라즈마인, 에칭 장치. - 청구항 1에 있어서,
상기 제3 플라즈마는 희가스를 포함하는 가스의 플라즈마인, 에칭 장치. - 청구항 1에 있어서,
상기 실리콘-함유층은 Si-O 결합을 포함하는, 에칭 장치. - 실리콘-함유층 및 상기 실리콘-함유층 상의 표면층 부분을 갖는 기판을 제공하고;
상기 표면층 부분 상에 보호막을 형성하고; 그리고,
상기 표면층 부분을 통해 상기 실리콘-함유층을 에칭하는 것을 포함하고,
상기 보호막을 형성하는 것은:
상기 표면층 부분 상에 전구체 층을 형성하고; 그리고,
상기 전구체 층을 제1 플라즈마에 노출시킴으로써 상기 전구체 층을 상기 보호막으로 변환하는 것을 포함하고,
상기 실리콘-함유층을 에칭하는 것은:
개질된 실리콘-함유층을 형성하기 위해 상기 제1 플라즈마와 상이한 제2 플라즈마에 상기 실리콘-함유층을 노출시킴으로써 상기 실리콘-함유층을 개질시키고; 그리고,
상기 개질된 실리콘-함유층을 상기 제1 플라즈마 및 상기 제2 플라즈마와 상이한 제3 플라즈마에 노출시킴으로써 상기 개질된 실리콘-함유층을 제거하는 것을 포함하는, 에칭 방법.
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