KR102871305B1 - 플라즈마 프로세싱 챔버에서 피처 대전을 감소시키기 위한 방법 및 장치 - Google Patents
플라즈마 프로세싱 챔버에서 피처 대전을 감소시키기 위한 방법 및 장치Info
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Abstract
Description
[0011] 도 1은 종래의 플라즈마 프로세스 동안 기판의 일부의 개략적인 단면도이다.
[0012] 도 2a 및 도 2b는 하나 이상의 실시예들에 따라, 본원에서 기술된 방법들 중 하나 이상을 실행하도록 적응될 수 있는 프로세스 챔버들의 개략적인 단면도들이다.
[0013] 도 3은 본원에서 설명된 실시예들 중 하나 이상을 사용하여 기판의 표면 상에 설정될 수 있는 PV(pulsed voltage) 파형들의 예들을 예시한다.
[0014] 도 4a 내지 도 4c는 본원에서 설명된 실시예들 중 하나 이상을 사용하여 전극에서 설정될 수 있는 PV(pulsed voltage) 파형들의 예들을 예시한다.
[0015] 도 5a는 본원에서 설명된 실시예들 중 하나 이상을 사용하여 프로세스 챔버 내의 전극들에서 설정될 수 있는 동기화된 PV(pulsed voltage) 파형들을 예시한다.
[0016] 도 5b는 본원에서 제공된 하나 이상의 실시예들에 따라 프로세스 챔버 내의 전극들에 적용되는 PV 파형들의 오버레이된 표현을 포함하는 프로세싱 챔버의 단순화된 개략도이다.
[0017] 도 6a는 본원에서 설명된 실시예들 중 하나 이상을 사용하여 프로세스 챔버 내의 전극들에서 설정될 수 있는 동기화된 RF 및 PV(pulsed voltage) 파형들을 예시한다.
[0018] 도 6b는 본원에서 제공된 하나 이상의 실시예들에 따라 프로세싱 챔버 내의 전극들에 적용되는 RF 및 PV 파형들의 오버레이된 표현을 포함하는 프로세싱 챔버의 단순화된 개략도이다.
[0019] 이해를 용이하게 하기 위해, 도면들에 대해 공통인 동일한 엘리먼트들을 지정하기 위해 가능한 경우 동일한 참조 번호들이 사용되었다. 일 실시예의 엘리먼트들 및 특징들이 추가적인 설명 없이 다른 실시예들에 유익하게 포함될 수 있는 것으로 고려된다.
Claims (20)
- 플라즈마 프로세싱 시스템으로서,
기판 지지 조립체 ― 상기 기판 지지 조립체는,
기판 지지 표면;
바이어스 전극; 및
상기 바이어스 전극과 상기 기판 지지 표면 사이에 배치된 제1 유전체 층을 포함함 ― ;
상기 바이어스 전극에 커플링된 제1 파형 생성기 ― 상기 제1 파형 생성기는 상기 바이어스 전극에서 설정되는 제1 복수의 펄스 전압 파형들을 생성하도록 구성되고, 상기 제1 복수의 펄스 전압 파형들의 펄스 전압 파형들 각각은 제1 스테이지 및 상기 제1 스테이지의 전압 레벨보다 낮은 전압 레벨을 갖는 제2 스테이지를 포함함 ― ;
상기 기판 지지 표면 위에 배치된 제1 전극;
상기 제1 전극에 커플링된 제2 파형 생성기 ― 상기 제2 파형 생성기는 상기 제1 전극에서 설정되는 제2 복수의 펄스 전압 파형들을 생성하도록 구성되고, 상기 제2 복수의 펄스 전압 파형들의 펄스 전압 파형들 각각은 제1 스테이지 및 상기 제1 스테이지의 전압 레벨보다 높은 전압 레벨을 갖는 제2 스테이지를 포함함 ― ; 및
제어기를 포함하고, 상기 제어기는 프로세서에 의해 실행될 때 상기 제1 복수의 펄스 전압 파형들 및 상기 제2 복수의 펄스 전압 파형들의 생성을 동기화하여서,
상기 제1 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제1 스테이지 및 상기 제2 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제1 스테이지는 시간적으로 적어도 부분적으로 오버랩하고, 그리고
상기 제1 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제2 스테이지 및 상기 제2 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제2 스테이지는 시간적으로 적어도 부분적으로 오버랩하도록 구성되는 컴퓨터 구현 명령들을 포함하는 메모리를 포함하는,
플라즈마 프로세싱 시스템. - 제1 항에 있어서,
상기 제1 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제1 스테이지의 시간의 지속기간 및 상기 제2 복수의 펄스 전압 파형들 내 상기 펄스 파형들의 제1 스테이지의 시간의 지속기간은 실질적으로 동일한,
플라즈마 프로세싱 시스템. - 제1 항에 있어서,
상기 기판 지지 조립체는 상기 기판 지지 표면의 중심 및 상기 제1 전극의 중심으로부터 일정 거리에 배치된 제2 전극을 더 포함하는,
플라즈마 프로세싱 시스템. - 제3 항에 있어서,
상기 제2 전극에 커플링된 제2 파형 생성기를 더 포함하고, 상기 제2 파형 생성기는 상기 제2 전극에서 설정되는 제3 복수의 펄스 전압 파형들을 생성하도록 구성되고, 상기 제3 복수의 펄스 전압 파형들의 펄스 전압 파형들 각각은 제1 스테이지 및 상기 제1 스테이지의 전압 레벨보다 낮은 전압 레벨을 갖는 제2 스테이지를 포함하는,
플라즈마 프로세싱 시스템. - 제4 항에 있어서,
상기 컴퓨터 구현 명령들은 추가로, 상기 제1 복수의 펄스 전압 파형들의 생성 및 상기 제3 복수의 펄스 전압 파형들의 생성을 동기화하도록 구성되는,
플라즈마 프로세싱 시스템. - 제1 항에 있어서,
상기 바이어스 전극, 상기 제1 전극, 또는 상기 제2 전극에 전기적으로 커플링된 RF(radio frequency) 생성기를 더 포함하는,
플라즈마 프로세싱 시스템. - 제1 항에 있어서,
상기 제1 전극은 상기 기판 지지 표면을 마주하는 표면을 갖고, 상기 표면은 상기 기판 지지 표면과 실질적으로 평행한,
플라즈마 프로세싱 시스템. - 제7 항에 있어서,
상기 제1 전극에 전기적으로 커플링된 RF(radio frequency) 생성기를 더 포함하는,
플라즈마 프로세싱 시스템. - 제1 항에 있어서,
상기 제1 복수의 펄스 전압 파형들 내 펄스 파형들 각각 및 상기 제2 복수의 펄스 전압 파형들 내 펄스 파형들 각각은 역으로 구성되는,
플라즈마 프로세싱 시스템. - 프로세싱 방법으로서,
제1 파형 생성기의 사용에 의해, 기판 지지 조립체에 배치된 바이어스 전극에서 제1 펄스 전압 파형을 설정하는 단계 ―
상기 제1 펄스 전압 파형은,
제1 스테이지; 및
상기 제1 스테이지의 전압 레벨보다 낮은 전압 레벨을 갖는 제2 스테이지를 포함함 ― ; 및
제2 파형 생성기의 사용에 의해, 상기 기판 지지 조립체 위에 배치된 제1 전극의 표면에 제2 펄스 전압 파형을 설정하는 단계를 포함하고,
상기 제2 펄스 전압 파형은,
제1 스테이지; 및
상기 제1 스테이지의 전압 레벨보다 높은 전압 레벨을 갖는 제2 스테이를 포함하고; 그리고
상기 제1 펄스 전압 파형 및 상기 제2 펄스 전압 파형이 동기화되어서,
상기 제1 펄스 전압 파형의 제1 스테이지 및 상기 제2 펄스 전압 파형의 제1 스테이지는 시간적으로 적어도 부분적으로 오버랩되고, 그리고
상기 제1 펄스 전압 파형의 제2 스테이지 및 상기 제2 펄스 전압 파형의 제2 스테이지는 시간적으로 적어도 부분적으로 오버랩되는,
프로세싱 방법. - 제10 항에 있어서,
상기 제1 펄스 전압 파형의 제1 스테이지의 시간의 지속기간 및 상기 제2 펄스 전압 파형의 제1 스테이지의 시간의 지속기간은 실질적으로 동일한,
프로세싱 방법. - 제10 항에 있어서,
제3 파형 생성기의 사용에 의해, 상기 기판 지지 조립체에 배치된 제2 전극에서 제3 펄스 전압 파형을 설정하는 단계를 더 포함하고,
상기 제3 펄스 전압 파형은,
제1 스테이지; 및
상기 제1 스테이지의 전압 레벨보다 낮은 전압 레벨을 갖는 제2 스테이지를 포함하는,
프로세싱 방법. - 제10 항에 있어서,
상기 제1 펄스 전압 파형의 제1 스테이지 및 제3 펄스 전압 파형의 제1 스테이지가 동시에 설정되고, 그리고
상기 제1 펄스 전압 파형의 제2 스테이지 및 상기 제3 펄스 전압 파형의 제2 스테이지가 동시에 설정되는,
프로세싱 방법. - 제10 항에 있어서,
상기 제1 펄스 전압 파형 및 상기 제2 펄스 전압 파형의 주파수는 약 1MHz 미만인,
프로세싱 방법. - 제10 항에 있어서,
상기 기판 지지 조립체는,
기판 지지 표면; 및
상기 바이어스 전극과 상기 기판 지지 표면 사이에 배치된 제1 유전체 층을 포함하는,
프로세싱 방법. - 제10 항에 있어서,
상기 2 펄스 전압 파형의 제1 스테이지의 전압 레벨은 상기 제1 전극의 표면으로부터 2차 전자들을 생성하도록 구성되는,
프로세싱 방법. - 제16 항에 있어서,
상기 제1 전극은 실리콘을 포함하는,
프로세싱 방법. - 제17 항에 있어서,
상기 제2 펄스 전압 파형의 제1 스테이지의 전압 레벨은 이온들이 상기 제1 전극의 표면에 충격을 가하게 하고, 최대 3keV의 에너지들을 얻을 수 있는 2차 전자들을 생성하여 상기 기판 표면을 향해 고도 지향성이 되게 하도록 구성되는,
프로세싱 방법. - 프로세싱 방법으로서,
제1 파형 생성기의 사용에 의해, 기판 지지 조립체에 배치된 바이어스 전극에서 제1 펄스 전압 파형을 설정하는 단계 ―
상기 제1 펄스 전압 파형은,
제1 스테이지; 및
상기 제1 스테이지의 전압 레벨보다 낮은 전압 레벨을 갖는 제2 스테이지를 포함하고;
상기 기판 지지 조립체는,
기판 지지 표면;
바이어스 전극;
상기 바이어스 전극과 상기 기판 지지 표면 사이에 배치된 제1 유전체 층을 포함함 ― ; 및
RF 파형 생성기의 사용에 의해, 상기 기판 지지 조립체 위에 배치된 제1 전극에서 RF 파형을 설정하는 단계를 포함하고,
상기 RF 파형은 정현파 파형을 포함하고, 그리고
상기 제1 펄스 전압 파형 및 상기 RF 파형은 동기화되어서,
상기 RF 파형의 트로프(trough)는 상기 제1 펄스 전압 파형의 제1 스테이지가 상기 바이어스 전극에 설정되는 시간의 기간 동안 형성되고, 그리고
상기 RF 파형의 피크는 상기 제1 펄스 전압 파형의 제2 스테이지가 상기 바이어스 전극에 설정되는 시간의 기간 동안 형성되는,
프로세싱 방법. - 제19 항에 있어서,
상기 제1 펄스 전압 파형 및 상기 RF 파형은 약 1MHz 미만의 주파수를 갖는,
프로세싱 방법.
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| JP2009246091A (ja) * | 2008-03-31 | 2009-10-22 | Tokyo Electron Ltd | プラズマ処理装置及びプラズマ処理方法及びコンピュータ読み取り可能な記憶媒体 |
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| TWI900778B (zh) | 2025-10-11 |
| TW202306442A (zh) | 2023-02-01 |
| US20220399186A1 (en) | 2022-12-15 |
| CN117480585A (zh) | 2024-01-30 |
| JP2024526013A (ja) | 2024-07-17 |
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| US12525433B2 (en) | 2026-01-13 |
| US20220399183A1 (en) | 2022-12-15 |
| WO2022260834A1 (en) | 2022-12-15 |
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