• 기계와재료
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• v.22 no.3
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• pp.30-35
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• 2010

최근 전자소자의 제조공정에 있어서 인쇄전자를 적용하여 고가이면서 화학물질이 많이 배출되는 기존의 제조공정을 대체하기 위한 연구가 활발하게 이루어지고 있다. 인쇄전자를 적용하기 위해서는 기존 공종 대비 생산비의 절감과 대량생산을 요구하고 있으며, 그 요구를 만족시킬 수 있는 인쇄전자 기술로는 롤투롤(R2R, Roll to Roll) 인쇄방식이 대표적이라 할 수 있다. 롤투롤 인쇄방식과 그라비아(Gravure)/그라비아옵셋(Gravure offset) 인쇄방법을 적용하면 낮은 비용으로 대량의 전자소자 생산에 쉽게 접근 할 수 있다. (주)펨스는 인쇄전자 기술의 활성화를 위하여 롤투롤-그라비아/그라비아옵셋 인쇄를 적용한 인쇄전자소자용 인쇄, 코팅장비를 개발 제작하고 있다.

• Journal of the Korean Society for Precision Engineering
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• v.30 no.6
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• pp.578-583
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• 2013

The lighting devices using organic light emitting diodes (OLEDs) are actively researched because of the various advantages such as high power efficiency and 2-dimensitonal lighting emitting. To commercialize those OLED lighting devices, the manufacturing cost must be downed to comparable price with conventional light sources. Here, we demonstrate a reverse gravure-offset or gravure off-set printed metal electrode for the auxiliary electrode for OLED lighting devices. For the fabricated OLED's auxiliary electrode, we used Ag nano-paste and printed metal grid structure with a line width and spacing of several ten and hundred micrometer by using gravure-offset printing. In the end the printing metal grid pattern are successfully achieved by optimization of various experimental conditions such as printing pressure, printing speed and printing delay time.

• Journal of the Korean Society for Precision Engineering
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• v.27 no.9
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• pp.16-19
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• 2010

This paper presents how to design and fabricate the gravure offset printing system for enhancement of register precision. Factors of precision error are caused by imprecision of gravure plate, deformation of substrate, printing quality change due to the change of ink viscosity, Imprecision of printing machine, and so on. This study suggests concept design of gravure offset printing system which is able to minimize or remove these error factors.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.11a
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• pp.81-82
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• 2010

• Journal of the Korean Society for Precision Engineering
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• v.25 no.5
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• pp.96-102
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• 2008

Manufacturing of printed electronics using printing technology has begun to get into the hot issue in many ways due to the low cost effectiveness to existing semi-conductor process. This technology, with low cost and high productivity, can make it possible to produce printed electronics such as TFT, solar cell, RFID Tag, printed battery, and so on. In this study, apparatus of gravure-offset printing are developed for fine line-width/gap printing and the results obtained from the apparatus shows that it is possible to make around 20 micro-meter line-width/gap printing patterns. The roll-to-roll printing system for fine line-width printing based on primary experiment is presented. The printing results obtained from the system shows around 30 micro-meter line-width/gap printing patterns.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.11a
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• pp.717-718
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• 2008

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.597-598
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• 2010

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.353-354
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• 2009

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.10a
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• pp.209-210
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• 2009

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.461-466
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• 2007

There has been a great interest in printing technology as a low cost and mass production method for the application of printed electronics such as printed TFT, solar cell, RFID Tag, printed battery, and so on. In this study, apparatuses of gravure-offset printing are developed for fine line-width/gap printing and examining pattern distortion occurred in gravure-offset printing process. The fine line-width/gap pattern shows that it is possible to make around 20 micro-meter line-width/gap printing patterns. Pattern distortion is modeled, and the amount and shape of the distortion are calculated by using commercial FEM code. The roll-to-roll printing system under development consists of unwinder/rewinder, two printing units, one coating unit, drying units, guiding unit, vision system, and other auxiliary devices. For multi-layer printing, the system is designed to be capable of printing two different materials.