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롤 임프린트 리소그래피 공정을 이용한 유연 기판 상의 마이크로 패턴 제작에 관한 연구
심종명(Jongmyeong Shim),제순규(Soonkyu Je),한정진(Jungjin Han),강신일(Shinill Kang) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
A method using a roll imprint lithography is proposed to fabricate conductive patterns and tracks on large area flexible substrate with low cost. Conductive indium tin oxide(ITO) patterns and tracks with line widths of 2~20㎛ were formed using the roll imprint lithography process. The geometrical and electrical properties of fabricated conductive ITO patterns and tracks were measured and analyzed.
프레넬 렌즈 성형에서 tip radius가 광학 성능에 미치는 영향
심종명(Jongmyeong Shim),김호관(Hokwan Kim),김중억(Joongeok Kim),명호(Ho Myung),김명연(Myungyon Kim),강신일(Shinill Kang) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
This paper describes the effect of tip radius on optical performance for fabricating Fresnel lens. We firstly designed Fresnel lens for uniform light distribution by backward design method and energy compensation method. To verify the effect of tip radius, simulation was conducted varying lens tip radius. Designed Fresnel lenses were replicated by UV imprinting and injection molding process using metal mold fabricated by direct machining. Lens profile fabricated by each process and optical performance with each fabricated lens were measured. We compared the results with simulation data, and analyzed the effect of tip radius.