KR20200047800A - 도전막 부착 기판, 다층 반사막 부착 기판, 반사형 마스크 블랭크 및 반사형 마스크, 그리고 반도체 장치의 제조방법 - Google Patents
도전막 부착 기판, 다층 반사막 부착 기판, 반사형 마스크 블랭크 및 반사형 마스크, 그리고 반도체 장치의 제조방법 Download PDFInfo
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/22—Masks or mask blanks for imaging by radiation of 100nm or shorter wavelength, e.g. X-ray masks, extreme ultraviolet [EUV] masks; Preparation thereof
- G03F1/24—Reflection masks; Preparation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/38—Masks having auxiliary features, e.g. special coatings or marks for alignment or testing; Preparation thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2551/00—Optical elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
도 1(b)는 본 실시형태의 마스크 블랭크용 기판을 나타내는 단면 모식도이다.
도 2는 본 발명의 일실시형태에 관한 도전막 부착 기판의 구성의 일례를 나타내는 단면 모식도이다.
도 3은 본 발명의 일실시형태에 관한 다층 반사막 부착 기판의 구성의 일례를 나타내는 단면 모식도이다.
도 4는 본 발명의 일실시형태에 관한 다층 반사막 부착 기판의 구성의 일례를 나타내는 단면 모식도이다.
도 5는 본 발명의 일실시형태에 관한 반사형 마스크 블랭크의 구성의 일례를 나타내는 단면 모식도이다.
도 6은 본 발명의 일실시형태에 관한 반사형 마스크의 일례를 나타내는 단면 모식도이다.
도 7은 본 발명의 일실시형태에 관한 반사형 마스크 블랭크의 구성의 다른 일례를 나타내는 단면 모식도이다.
도 8은 본 발명의 비교예 A 및 실시예 2의 반사형 마스크 블랭크의, 이면 도전막의 표면 거칠기의 베어링 커브 측정 결과를 나타내는 그래프이다.
도 9는 비교예 1 및 2의 반사형 마스크 블랭크의, 이면 도전막의 표면 거칠기의 베어링 커브 측정 결과를 나타내는 그래프이다.
도 10은 기준 마크 및 평가용 패턴을 갖는 좌표 계측 측정 평가용 마스크의 모식도이다.
도 11은 비교예 A의 베어링 깊이(Depth)(nm)와 그 빈도(Hist.)(%)와의 관계를 플롯한 도수 분포를 나타내는 그래프이다.
20: 다층 반사막 부착 기판
21: 다층 반사막 22: 보호막
23: 이면 도전막 24: 흡수체막
25: 에칭 마스크막 26: 마스크 블랭크용 다층막
27: 흡수체 패턴 30: 반사형 마스크 블랭크
40: 반사형 마스크(좌표 계측 측정 평가용 마스크)
42: 평가용 패턴(홀 패턴) 44: 기준 마크
50: 도전막 부착 기판
Claims (8)
- 리소그래피에 사용되는 마스크 블랭크용 기판의 한쪽의 주표면의 위에, 도전막이 형성된 도전막 부착 기판으로서,
상기 도전막 표면에 있어서의 1㎛×1㎛의 영역을, 원자간력 현미경으로 측정하여 얻어지는 베어링 깊이와, 상기 베어링 깊이의 빈도(%)와의 관계를 플롯한 도수 분포도에 있어서, 상기 플롯한 점으로부터 구한 근사 곡선, 또는 상기 플롯한 점에 있어서의 최고 빈도로부터 구해지는 반치폭의 중심에 대응하는 베어링 깊이의 절대값이, 상기 도전막 표면의 표면 거칠기에 있어서의 최대 높이(Rmax)의 1/2에 대응하는 상기 베어링 깊이의 절대값 이상이고, 또한 상기 최대 높이(Rmax)가 1.3nm 이상 15nm 이하인 것을 특징으로 하는 도전막 부착 기판. - 제 1 항에 있어서,
상기 도전막 표면의 표면 거칠기에 있어서의 제곱 평균 평방근 거칠기(Rms)는, 0.15nm 이상 1.0nm 이하인 것을 특징으로 하는 도전막 부착 기판. - 제 1 항 또는 제 2 항에 있어서,
상기 도전막 표면에 있어서의 1㎛×1㎛의 영역은, 148mm×148mm의 영역을 포함하는 임의의 개소인 것을 특징으로 하는 도전막 부착 기판. - 다층 반사막 부착 기판으로서,
제 1 항에 기재한 도전막 부착 기판의 상기 도전막이 형성되어 있는 측과는 반대측의 주표면의 위에, 고굴절률층과 저굴절률층을 교대로 적층한 다층 반사막이 형성되어 있는 것을 특징으로 하는 다층 반사막 부착 기판. - 제 4 항에 있어서,
상기 다층 반사막의 위에 보호막이 형성되어 있는 것을 특징으로 하는 다층 반사막 부착 기판. - 반사형 마스크 블랭크로서,
제 4 항 또는 제 5 항에 기재한 다층 반사막 부착 기판의 상기 다층 반사막의 위 또는 상기 다층 반사막의 위에 보호막이 형성되어 있는 경우에는 상기 보호막의 위에, 흡수체막이 형성되어 있는 것을 특징으로 하는 반사형마스크 블랭크. - 반사형 마스크로서,
제 6 항에 기재한 반사형 마스크 블랭크의 상기 흡수체막을 패터닝하여, 상기 다층 반사막상에 흡수체 패턴을 갖는 것을 특징으로 하는 반사형 마스크. - 반도체 장치의 제조 방법으로서,
제 7 항에 기재한 반사형 마스크를 이용하고, 노광장치를 사용한 리소그래피프로세스를 실시하여, 피전사체상에 전사 패턴을 형성하는 공정을 갖는 것을 특징으로 하는 반도체 장치의 제조방법.
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