KR101913684B1 - 건식 에칭장치 및 그 제어방법 - Google Patents
건식 에칭장치 및 그 제어방법 Download PDFInfo
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- KR101913684B1 KR101913684B1 KR1020160137827A KR20160137827A KR101913684B1 KR 101913684 B1 KR101913684 B1 KR 101913684B1 KR 1020160137827 A KR1020160137827 A KR 1020160137827A KR 20160137827 A KR20160137827 A KR 20160137827A KR 101913684 B1 KR101913684 B1 KR 101913684B1
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Abstract
Description
도 1은 종래의 건식 에칭 공법을 이용하여 반도체에 구리층을 형성하는 과정을 도시한 도면이다.
도 2는 본 발명의 일 실시예에 따른 건식 에칭장치를 도시한 단면도이다.
도 3은 도 1의 편평부를 도시한 도면이다.
도 4는 플라즈마 에칭과정 중에 식각된 원자(a)가 플라즈마 이온 또는 가스(e)에 의해 리바운드되어 다시 재증착(re-deposition)되는 모습을 도시한 도면이다.
도 5는 양방향 전압전원이 교류형태의 파형을 나타내고, 애노드부에 직류전원을 인가하였을 때 캐소드와 애노드 사이에 형성되는 양방향 전압전원전압 파형 변화를 도시한 그래프이다.
도 6은 양방향 전압전원이 대칭적인 바이폴라 형태의 파형을 나타내고, 애노드부에 직류전원을 인가하였을 때 캐소드와 애노드 사이에 형성되는 양방향 전압전원전압의 파형 변화를 도시한 그래프이다.
도 7은 양방향 전압전원이 비대칭적인 바이폴라 형태의 파형을 나타내고, 애노드부에 직류전원을 인가하였을 때 캐소드와 애노드 사이에 형성되는 양방향 전압전원의 전압파형 변화를 도시한 그래프이다.
도 8은 애노드에 직류전원을 인가하였을 때 식각된 원자(a)의 운동모습을 도시한 도면이다.
도 9는 본 발명의 건식 에칭장치의 제어방법의 일 실시예를 도시한 순서도 이다.
도 10은 본 발명의 건식 에칭장치의 편평부가 형성되고 에칭되는 모습을 순차적으로 도시한 도면이다.
112: 제1컨덕터 114: 제2컨덕터
116: 캐소드 절연체 120: 애노드부
130: 양방향 전압전원 공급부
140: 거치부 142: 고정편
144: 제1부재 146: 제2부재
148: 스프링 150: 거리조절부
152: 모터 154: 커플링
156: 지지봉 160: 직류전압전원인가부
170: 온도제어부 172: 냉각채널
174: 냉매순환부 176: 온도측정부
180: 편평부 182: 플랫 플레이트
184: 접착층 186: 포토레지스트 필름
188: 삽입층 W: 작업대상물
i: 이온 a: 원자
Claims (12)
- 애노드부;
상기 애노드 부의 상측에 상기 애노드부와 마주보도록 배치되며, 시간에 따라 전압의 극성이 양의전압과 음의전압을 교번하는 양방향 전압전원이 인가되며, 상기 애노드부와 이격되도록 배치되는 캐소드부;
상기 캐소드부의 애노드부와 마주보는 면에 밀착되게 위치되며, 작업대상물을 평평한 상태로 위치시키는 편평부;
상기 캐소드부의 애노드부와 마주보는 면에 작업대상물과 편평부를 고정시키는 거치부; 및
상기 캐소드부에, 상기 양방향 전압전원을 인가하는 양방향 전압전원 공급부를 포함하며,
상기 편평부는,
상기 캐소드부의 애노드부와 마주보는 면에 착탈 가능하게 밀착되며, 그 배면에 정전기를 이용하여 작업대상물이 평평한 상태로 밀착되게 부착되는 플랫 플레이트를 포함하는, 건식 에칭장치.
- 삭제
- 제1항에 있어서,
상기 편평부는,
상기 작업대상물이 부착된 플랫플레이트와 작업대상물의 표면 둘레에 형성되는 포토레지스트 필름을 더 포함하는, 건식 에칭장치.
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,
상기 작업대상물과 포토레지스트 필름 사이에 적층되며, 반도체 또는 부도체 등의 재질로 이루어지는 삽입층을 더 포함하는, 건식 에칭장치. - 제1항에 있어서,
상기 거치부는,
상기 작업대상물 및 포토레지스트 필름이 구비된 플랫 플레이트를 상기 캐소드부의 애노드부와 마주보는 면에 밀착시키도록 상기 편평부를 탄성지지하는, 건식 에칭장치. - 제1항에 있어서,
상기 작업대상물에 이온의 충돌(hitting)시간은 줄이고, 전자의 충돌(hitting)시간은 늘어나도록 상기 애노드부에 직류전압전원을 인가하는 직류전압전원인가부를 더 포함하는 건식 에칭장치. - 제9항에 있어서,
상기 직류전압전원인가부를 통해 인가되는 전원은 음의 전압 또는 양의 전압인 것을 특징으로 하는 건식 에칭장치. - 삭제
- 삭제
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