• 제목/요약/키워드: Kim DooJong

검색결과 783건 처리시간 0.049초

초발수 기판의 친수 패터닝을 이용한 금속배선화 (Patterning of Super-hydrophobic Surface Treated Polyimide Film)

  • 나종주;엄대용;이건환;최두선;김완두
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회A
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    • pp.1553-1555
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    • 2008

  • Super-hydrophobic treated Polyimide film was used as a flexible substrate for developing a new method of metallization. Hydrophilic patterns were fabricated by IN irradiation through shadow mask. Patterned super-hydrophobic substrate was dipped into a bath containing silver nano ink Silver ink was only coated on hydrophilic patterned area. Metal lines of $600{\mu}m$ pitch were fabricated successfully. However, their thickness was too thin to serve as interconnection. To overcome this problem, iterative dipping was conducted. After repeating five times, the thickness of silver metal lines were increased to over than $2{\mu}$. After heat treatment of silver lines, their resistivities were reduced to order of $30{\mu}{\Omega}$-cm the similar level of values reported in other literatures. So, a new method of metallization has high potential for application of RFID antenna and flexible electronics substrates.

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조명기구의 배치에 따른 교실의 조도와 에너지 절약 (A Energy Saving and Illuminance of a Classroom due to the arrangement of luminaires)

  • 김이두;오세영;박희두;신종열;이수원;홍진웅
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 E
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    • pp.2417-2419
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    • 1999

  • Among educational environment, lighting's role is getting more important since it improves the visual tasks, capability of work, and it help to build both balanced mind and body. Also, since students spend most of their time inside rather than outside, students need appropriate illuminance everyday. If optimum illuminance, the color rendering properties and controlled distribution of lighting is given, people can decrease the fatigue of eyes, recover their health, and also, people can maximize their efficiency of work. In this paper, their is a comparison between the real illuminance and illuminance distribution due to the uniformity ratio of 2 or 3 dimensions by simulation.

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