KR20160038871A - 패턴화 기판의 제조 방법 - Google Patents
패턴화 기판의 제조 방법 Download PDFInfo
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- KR20160038871A KR20160038871A KR1020150138201A KR20150138201A KR20160038871A KR 20160038871 A KR20160038871 A KR 20160038871A KR 1020150138201 A KR1020150138201 A KR 1020150138201A KR 20150138201 A KR20150138201 A KR 20150138201A KR 20160038871 A KR20160038871 A KR 20160038871A
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- block copolymer
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- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
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Abstract
Description
도 2는, 기판의 트렌치에 자기 조립된 고분자가 형성되어 있는 형태를 모식적으로 보여준다.
도 3은, 자기 조립된 블로 공중합체의 어느 한 블록을 선택적으로 제거한 후의 형태를 모시적으로 보여준다.
도 4 내지 8은, 제조예 6 내지 10의 블록 공중합체에 의해 형성된 고분자막의 SEM 사진이다.
도 9는 실시예에서 적용한 메사 구조(20)가 형성된 기판(10)의 모식도이다.
도 10은, 실시예 1에서 형성된 고분자막의 SEM 사진이다.
Claims (28)
- 표면에 서로 간격을 두고 배치된 메사(mesa) 구조에 의해 트렌치가 형성되어 있는 기판의 상기 트렌치 내에 블록 공중합체를 포함하는 막을 형성하고, 상기 블록 공중합체의 자기 조립 구조를 유도하는 단계를 포함하며, 상기 블록 공중합체를 포함하는 막이 접촉하는 상기 트렌치 내의 표면은 중성 처리가 수행되어 있지 않은 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 트렌치는, 기판상에 메사 구조 형성 재료의 층, 반사 방지층 및 레지스트층을 순차 형성하는 단계; 상기 레지스트층을 패턴화하는 단계; 패턴화된 레지스트층을 마스크로 하여 상기 메사 구조 형성 재료의 층을 에칭하는 단계를 포함하는 패턴화 기판의 제조 방법.
- 제 2 항에 있어서, 메사 구조 형성 재료의 층의 에칭은, 반응성 이온 에칭으로 수행하는 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 트렌치를 형성하도록 이격 배치되어 있는 메사 구조의 간격(D)과 상기 메사 구조의 높이(H)의 비율(D/H)은 0.1 내지 10의 범위 내에 있는 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 트렌치를 형성하도록 이격 배치되어 있는 메사 구조간의 간격(D)과 메사 구조의 폭(W)의 비율(D/W)은 0.5 내지 10의 범위 내에 있는 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 블록 공중합체의 자기 조립 구조는 라멜라 구조이고, 상기 메사 구조의 간격은 약 1L 내지 20L의 범위 내이며, 상기에서 L은 상기 라멜라 구조의 피치인 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 블록 공중합체의 자기 조립 구조는 라멜라 구조이고, 상기 블록 공중합체를 포함하는 막의 두께는 1L 내지 10L이며, 상기에서 L은 상기 라멜라 구조의 피치인 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 자기 조립 구조는 수직 배향된 블록 공중합체를 포함하는 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 자기 조립 구조는 라멜라 구조인 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 블록 공중합체는 제 1 블록 및 상기 제 1 블록과는 다른 제 2 블록을 포함하고,
상기 제 1 블록은 GIWAXS 스펙트럼의 12 nm-1 내지 16 nm-1 범위의 산란 벡터의 회절 패턴의 -90도 내지 -70도의 범위 내의 방위각에서 피크를 나타내고, 또한 70도 내지 90도의 범위 내의 방위각에서 피크를 나타내는 패턴화 기판의 제조 방법. - 제 1 항에 있어서, 블록 공중합체는, 제 1 블록 및 상기 제 1 블록과는 다른 화학 구조를 가지는 제 2 블록을 포함하고,
상기 제 1 블록은, DSC 분석에서 -80℃ 내지 200℃의 범위 내에서 용융 전이 피크 또는 등방 전이 피크를 나타내는 패턴화 기판의 제조 방법. - 제 1 항에 있어서, 블록 공중합체는, 제 1 블록 및 상기 제 1 블록과는 다른 화학 구조를 가지는 제 2 블록을 포함하고,
상기 제 1 블록은, XRD 분석 시에 0.5 nm-1 내지 10 nm-1의 산란 벡터(q) 범위 내에서 0.2 내지 0.9 nm-1의 범위 내의 반치폭을 가지는 피크를 나타내는 패턴화 기판의 제조 방법. - 제 1 항에 있어서, 블록 공중합체는, 제 1 블록 및 상기 제 1 블록과는 다른 화학 구조를 가지는 제 2 블록을 포함하고,
상기 제 1 블록은, 측쇄 사슬을 포함하며,
상기 측쇄 사슬의 사슬 형성 원자의 수(n)와 상기 제 1 블록에 대한 XRD 분석에 의해 구해지는 산란 벡터(q)는 하기 수식 2를 만족하는 패턴화 기판의 제조 방법:
[수식 2]
3 nm-1 내지 5 nm-1 = nq/(2×π)
수식 2에서 n은 상기 측쇄 사슬의 사슬 형성 원자의 수이고, q는, 상기 측쇄 사슬을 포함하는 블록에 대한 X선 회절 분석에서 피크가 관찰되는 가장 작은 산란 벡터(q)이거나, 혹은 가장 큰 피크 면적의 피크가 관찰되는 산란 벡터(q)이다. - 제 1 항에 있어서, 블록 공중합체는, 제 1 블록 및 상기 제 1 블록과는 다른 화학 구조를 가지는 제 2 블록을 포함하고,
상기 제 1 블록의 표면 에너지와 상기 제 2 블록의 표면 에너지의 차이의 절대값이 10 mN/m 이하인 패턴화 기판의 제조 방법. - 제 1 항에 있어서, 제 1 블록 및 상기 제 1 블록과는 다른 화학 구조를 가지는 제 2 블록을 포함하고,
상기 제 1 블록과 제 2 블록의 밀도의 차이의 절대값은 0.25 g/cm3 이상인 패턴화 기판의 제조 방법. - 제 1 항에 있어서, 블록 공중합체는 제 1 블록과 상기 제 1 블록과는 다른 제 2 블록을 포함하고, 상기 제 1 블록의 부피 분율은 0.2 내지 0.6의 범위 내에 있으며, 상기 제 2 블록의 부피 분율은 0.4 내지 0.8의 범위 내에 있는 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 블록 공중합체의 제 1 블록은 사슬 형성 원자가 8개 이상인 측쇄 사슬을 포함하는 패턴화 기판의 제조 방법.
- 제 17 항에 있어서, 제 1 블록은 고리 구조를 포함하고, 측쇄 사슬이 상기 고리 구조에 치환되어 있는 패턴화 기판의 제조 방법.
- 제 18 항에 있어서, 고리 구조는, 할로겐 원자를 포함하지 않는 패턴화 기판의 제조 방법.
- 제 17 항에 있어서, 블록 공중합체의 제 2 블록은 3개 이상의 할로겐 원자를 포함하는 패턴화 기판의 제조 방법.
- 제 20 항에 있어서, 제 2 블록은 고리 구조를 포함하고, 할로겐 원자는 상기 고리 구조에 치환되어 있는 패턴화 기판의 제조 방법.
- 제 23 항에 있어서, 화학식 2에서 P는 탄소수 6 내지 12의 아릴렌기인 패턴화 기판의 제조 방법.
- 제 1 항에 있어서, 자기 조립 구조를 형성하고 있는 블록 공중합체의 어느 한 블록을 선택적으로 제거하는 단계를 추가로 포함하는 패턴화 기판의 제조 방법.
- 제 27 항에 있어서, 블록 공중합체의 어느 하나의 블록을 선택적으로 제거한 후에 기판을 식각하는 단계를 추가로 포함하는 패턴화 기판의 제조 방법.
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