• Title/Summary/Keyword: Gravure offset printing

Search Result 35, Processing Time 0.072 seconds

A Study on Processing of Auxiliary Electrodes for OLED Lighting Devices Using a Reverse Gravure-Offset or Gravure-Offset Printing (리버스 그라비아 옵셋 또는 그라비아 옵셋 프린팅을 이용한 조명용 OLED 소자 보조전극 형성 공정 연구)

  • Bae, Sung Woo;Kwak, Sun Woo;Kim, In Young;Noh, Yong-Young
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.30 no.6
    • /
    • pp.578-583
    • /
    • 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.

Design and Development of Gravure Offset Printing System (그라비아 옵셋 인쇄 장비 설계 및 제작)

  • Noh, Jae-Ho;Lee, Taik-Min;Park, Sang-Ho;Jo, Jeong-Dai;Kim, Dong-Soo
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.27 no.9
    • /
    • pp.16-19
    • /
    • 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.

Roll-to-Roll Gravure Offset Printing System for Printed Electronics (인쇄전자를 위한 롤투롤 그라비아 옵셋 인쇄 장비)

  • Kim, Chung-Hwan;Choi, Byung-Oh;Ryu, Byung-Soon;Lim, Kyu-Jin;Lee, Myung-Hoon;Kim, Dong-Soo
    • Proceedings of the KSME Conference
    • /
    • 2007.05a
    • /
    • pp.461-466
    • /
    • 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.

  • PDF

Fabrication Method of Metal Grid Mesh Film Using the Gravure Offset Printing (그리비어 옵셋을 이용한 메탈 그리드 메쉬 필름 제작 기법)

  • Kim, Jung Su;Kim, Dong Soo
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.31 no.11
    • /
    • pp.969-974
    • /
    • 2014
  • Previously fabricated electronic devices were used for vacuum manufacturing processes such as conventional semiconductor manufacturing. However, they are difficult to apply to continuous processes such as roll-to-roll printing, which results in very high device manufacturing and processing costs. Therefore, many developers have been interested in applying continuous processes to contact printing or noncontact printing technologies and they proposed various continuous printing techniques instead of conventional batch coating. In this paper, we proposed improved gravure offset printing process as one of the contact printing technique. We used etching pattern geometry with soft core blanket roll for printing of ultra fine line below the 10um.Using this technique we obtained flexible metal grid mesh film as transparent conductive film.

Gravure Offset Printing for Printed Electronics (인쇄전자를 위한 그라비아 옵셋 인쇄)

  • Kim, Chung-Hwan;Choi, Byung-Oh;Ryu, Byung-Soon;Kim, Dong-Soo
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.25 no.5
    • /
    • pp.96-102
    • /
    • 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.

Study of Liquid Transfer Process for micro-Gravure-Offset Printing (마이크로 그라비아 옵셋 프린팅에서의 유체 전이 공정에 관한 연구)

  • Kang, Hyun-Wook;Huang, Wei-Xi;Sung, Hyung-Jin;Lee, Taik-Min;Kim, Dong-Soo
    • Proceedings of the KSME Conference
    • /
    • 2008.11a
    • /
    • pp.1098-1102
    • /
    • 2008
  • To increase the ink transfer rate in the micro-gravure-offset printing, the liquid transfer process between two separating plates is investigated. During the liquid transfer process, in which one plate is fixed and the other one moves vertically, a sessile droplet is separated into two droplets. The volume ratio of the two droplets depends on the contact angles of the two plates. In a numerical study of the ink transfer processes, liquid transfer between two parallel separating plates and between a trapezoidal cavity and an upward moving plate are simulated, as models of the printing of ink from the offset pad onto the substrate and the picking up of ink from the gravure plate by the offset pad, respectively. Also, in experimental study, to obtain various surface contact angles, chemical treatment, plasma treatment, and electrowetting- on-dielectric (EWOD) surface are considered. The transfer rate between two plates is calculated by analyzing the droplet images. From the results, the optimal surface contact angles of the units of the micro-gravure-offset printing can be characterized.

  • PDF

Gravure Offset Printed on Fine Pattern by Developing Electrodes for the Ag Paste (Gravure Offset 인쇄에 의한 미세 전극용 Ag Paste 개발)

  • Lee, Sang-Yoon;Jang, Ah-Ram;Nam, Su-Yong
    • Journal of the Korean Graphic Arts Communication Society
    • /
    • v.30 no.3
    • /
    • pp.45-56
    • /
    • 2012
  • Printing technology is accepted by appropriate technology that smart phones, tablet PC, display(LCD, OLED, etc.) precision recently in the electronics industry, the market grows, this process in the ongoing efforts to improve competitiveness through the development of innovative technologies. So printed electronics appeared by new concept. This technology development is applied on electronic components and circuits for the simplification of the production process and reduce processing costs. Low-temperature process making possible for widening, slimmer, lighter, and more flexible, plastic substrates, such as(flexible) easily by forming a thin film on a substrate has been studied. In the past, the formation of the electrode used a screen printing method. But the screen printing method is formation of fine patterns, high-speed printing, mass production is difficult. The roll-to-roll printing method as an alternative to screen printing to produce electronic devices by printing techniques that were used traditionally in the latest technology and processing techniques applied to precision control are very economical to implement fine-line printing equipment has been evaluated as. In order to function as electronic devices, especially the dozens of existing micro-level of non-dot print fine line printing is required, the line should not break at all, because according to the specifications required to fit the ink transfer conditions should be established. In this study of roll-to-roll printing conductive paste suitable for gravure offset printing by developing Ag paste for forming fine patterns to study the basic physical properties with the aim of this study were to.