• Title/Summary/Keyword: 실버 페이스트

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Development of Solvent-Free Type for UV-Curable Silver Paste (무용제 타입 UV경화형 실버 페이스트 개발)

  • Jang, Min Yong;Nam, Hyun Jin;Nam, Su Yong
    • Journal of the Microelectronics and Packaging Society
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    • v.29 no.2
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    • pp.107-112
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    • 2022
  • In this study, a silver paste capable of UV curing without using any solvent was developed. The viscosity and viscoelasticity of the silver paste developed as a solvent-free type were measured. And after printing the pattern by screen printing, an electrode coating film was formed by UV curing. Conductivity, pencil hardness, and adhesive force of the formed electrode coating film were evaluated. Finally, the curing characteristics of the electrode coating film were evaluated by TGA and FT-IR. Summarizing these results, in terms of conductivity, adhesion, and curing characteristics, it was found that Paste (4), that is, silver paste obtained by mixing 1.2 ㎛ spherical silver powder and 50 nm silver powder at 72:8% had the best physical properties.

A Studies on the Characteristics of Reliability Test by Automotive Touch Screen Silver Pastes (자동차 터치스크린용 실버페이스트 종류에 따른 신뢰성 테스트 특성 연구)

  • Kim, Jung-won;Choi, Ung-se
    • Journal of IKEEE
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    • v.20 no.2
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    • pp.205-208
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    • 2016
  • In this paper, different types of touch screen silver pastes for bonding in conductive pattern formed over the ito film by bonding each sample of 5 was dried. The dry conditions, the oxidation of the ito film is a condition that does not occur. Reliability testing constant temp and humidity, cold-hot impact test is in progress. Each test will check the status of five sheets conductive pattern bonding. Conductive pattern bonding, after each 240,480,615 hours to check the status of silver pattern bonding. Reliability testing these through different silver pastes can see that the change in the adhesion and conductivity deterioration of the quality can be prevented, and reliability testing low temperature curing from the surface of silver pastes that can come as soon as the discoloration was unknown.

Surface treatment of silver-paste electrode by atmospheric-pressure plasma-jet (대기압 플라즈마 제트를 이용한 실버페이스트 전극의 표면처리)

  • Sheik Abdur Rahman;Shenawar Ali Khan;Yunsook Yang;Woo Young Kim
    • Journal of the Korean Applied Science and Technology
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    • v.40 no.1
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    • pp.71-80
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    • 2023
  • Silver paste is a valuable electrode material for electronic device applications because it is easy to handle with relatively low heat treatment. This study treated the electrode surface using an atmospheric-pressure plasma jet on the silver-paste electrode. This plasma jet was generated in an argon atmosphere using a high voltage of 5.5 to 6.5 kV with an operating frequency of 11.5 kHz. Plasma-jet may be more beneficial to the printing process by performing it at atmospheric pressure. The electrode surface becomes hydrophilic quickly and contact angle variation is observed on the electrode surface as a function of plasma treatment time, applied voltage, and gas flow rate. Also, there was no deviation in the contact angle after the plasma treatment in the large-area sample, that means a uniform result could be obtained regardless of the substrate size. The outcomes of this study are expected to be very useful in forming a stacked structure in the manufacture of large-area electronic devices and future applications.

Stretchable Electrode Properties Study According to Particle Size of Flake-type Ag Powders (Flake-type Ag분말의 입자크기에 따른 신축성 전극 특성 연구)

  • Nam, Hyun Min;Sea, Min Ho;Nam, Su Yong
    • Journal of the Microelectronics and Packaging Society
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    • v.29 no.4
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    • pp.35-40
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    • 2022
  • In this study, the average particle size of silver powder was 2㎛, 7㎛, and a mixture of these (50:50wt%), three kinds of silver pastes were prepared. In addition, as a result of examining the viscosity and viscoelasticity of the three silver pastes, TGA measurement, resistance change according to strain, and change in surface structure of the electrode, the following conclusions were obtained. Summarizing these results, it was found that it is most desirable to have a particle size of about 2㎛ in order to minimize the change in resistance due to strain.

Effects of Materials and Processing in Photosensitive Silver Pastes (감광성 실버 페이스트의 재료와 공정에 대한 영향)

  • Lee, Sang-Myoung;Park, Sung-Dae;Yoo, Myong-Jae;Lee, Woo-Sung;Nahm, Sahn
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.42-43
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    • 2006
  • LTCC 후막공정에서 일반적으로 사용되고 있는 스크린 프린팅 방법은 낮은 정밀도와 100um 이하의 선폭을 구현하는 데 한계를 보이고 있다. 이에 따라서 보다 미세한 라인을 형성 할 수 있는 반도체 미세라인 공정기술을 후막 공정에 응용한 후막 리소그라피 기술 (thick-film lithography technology)이 전자부품의 소형화에 대한 방안으로 연구 되고 있다. 본 연구에서는 후막 리소그라피 기술에 사용되는 감광성 Silver 페이스트에 영향을 미치는 각기 다른 크기와 형상의 Silver 파우더들과 인쇄 후 표면의 roughness 개선을 위한 여러 종류의 첨가제들을 첨가하여 최적의 조성을 연구 하였으며, 그린시트와 페이스트의 매칭성을 해결하기 위해서 Tg가 다른 글라스 파우더를 첨가하였다. 또한 전면 인쇄 한 후에 건조, 노광, 현상, 적층, 소성 과정을 걸치는 후막 리소그라피 기술을 이용하여 소성 후 20um이하의 선폭을 가지는 내장형 패턴 구현하였으며 투과엑스레이와 O/S 테스트 통하여 우수한 특성을 확인 할 수 있었다.

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Comparison of Contact Resistivity Measurements of Silver Paste for a Silicon Solar Cell Using TLM and CTLM (TLM 및 CTLM을 이용한 실리콘 태양전지 전면전극소재의 접촉 비저항 측정 비교연구)

  • Shin, Dong-Youn;Kim, Yu-Ri
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.38 no.6
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    • pp.539-545
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    • 2014
  • Contact resistivity between silver electrodes and the emitter layer of a silicon solar cell wafer has been measured using either the circular transmission line method or the linear transmission line method. The circular transmission line method has an advantage over the linear transmission line method, in that it does not require an additional process for mesa etching to eliminate the leakage current. In contrast, the linear transmission line method has the advantage that its specimen can be acquired directly from a silicon solar cell. In this study, measured resistance data for the calculation of contact resistivity is compared for these two methods, and the mechanism by which the linear transmission line method can more realistically reflect the impact of the width and thickness of a silver electrode on contact resistivity is investigated.

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
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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.

High Speed and Continuous Electrospinning Printing Using Polymer Ink (고분자 폴리머 잉크를 이용한 고속 연속 전기 방사 프린팅)

  • Zhang, Da-Hai;Kwon, Kye-Si
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.39 no.4
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    • pp.379-384
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    • 2015
  • Electrospinning has recently been used for micropatterning. The electrospinning method as a patterning tool has the advantage of a rapid patterning speed because it is based on a continuous printing mode rather than a drop-on-demand mode. To obtain stable continuous printing, a high molecular weight polymer must be mixed with functional materials for patterning. In this paper, polyethylene oxide (PEO) was used. The effect of polymer on viscosity and formation of a Taylor cone jet from the electrospinning nozzle was investigated. Finally, the electrospinning patterning results of a silver paste ink on a glass substrate were investigated.