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백병만(Byoung-Man Paik),이제훈(Jae-Hoon Lee),신동식(Dong-Sig Shin),이건상(Kun-Sang Lee) 한국레이저가공학회 2009 한국레이저가공학회지 Vol.12 No.4
The LDS(Laser Direct Structuring) process uses thermoplastic polymers with a additive compound that serves as plating seed after the activation by laser. It can realize industry requirement such as miniaturization of electrical component, design flexibility and reduction of production steps. The purpose of this study is to introduce LDS, and to investigate the fundamental mechanism. Also the characteristics of conductive patterns were investigated with respect to laser fluence and intensity. We have used a pulsed fiber laser (wavelength : 1064nm) and copper electroless plating to fabricate conductive patterns. The result showed that laser induced metal-organic complex was caused metalization by electroless copper plating, the critical laser fluence was 1.41 J/㎠ at a scan speed of 1 m/s.
백병만(Byoung Man Paik),이제훈(Jae Hoon Lee),신동식(Dong Sig Shin),이건상(Kun Sang Lee) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
The purpose of this study is to Development of 3-D Conductive Pattern Fabrication using Laser. Direct patterning of 3-D for the implementation of technology systems are dynamic focusing, laser power stabilizer and auto align. These technologies are already used commercially. But, operation and control integrated system for 3-d direct patterning are not yet developed in Korea. In this paper, developed the operating and integration system was introduced for 3-D conductive pattern formation.
레이저에 의한 폴리머상의 무전해 도금 시드 형성 메커니즘 연구
백병만(Byoung Man Paik),이제훈(Jae Hoon Lee),신동식(Dong Sig Shin),이건상(Kun Sang Lee) Korean Society for Precision Engineering 2012 한국정밀공학회지 Vol.29 No.1
The LDS(Laser Direct Structuring) is one of the new direct writing methods to fabricate conductive patterns by energy beam. It uses thermoplastic polymers with an additive compound that serves as plating seed after the activation by laser. The advantages of LDS include the miniaturization of electrical components, design flexibility, and a reduced number of production steps. The purpose of this study is to investigate the fundamental mechanism for LDS and the characteristics of conductive patterns by laser parameters. These results were studied by SEM, EDX, and XPS analysis. We have used a 20W pulse-modulated fiber laser and copper electroless plating to fabricate conductive patterns on polymer. The result showed that electroless copper plating seed caused the laser cracking of additive compound. In particular, the additive compound contained in copper metal oxides atoms will be changed to copper metal elements. Also, the characteristics of conductive patterns were dependent on laser parameter, especially laser fluence.
이만호(Man Ho Lee),이건상(Kun Sang Lee),최준호(Jun Ho Choi),백병만(Byoung Man Paik),김태완(Tae Wan Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.4
본 논문은 자동변속기 재제조 작업을 위한 반자동식 작업스테이션의 개발에 관한 것이다. 자동변속기는 구조가 복잡하여 재제조를 위하여 전문적이고 숙련된 인력이 필요하다. 그러나 이러한 전문인력이 투입되어도 적절한 작업환경이 제공되지 않을 경우에는 작업결과의 효율성과 일관성을 보장하기 어렵다. 적절한 작업환경이란 작업의 용이성, 반복정확성 및 안전성을 보장한다는 것을 의미한다. 이러한 작업환경을 제공하기 위하여 자동변속기 재제조 작업을 지원할 수 있는 작업스테이션을 개발하였다. In this study it is presented the development of semi-automatic workstation. Because the structure of automatic transmission is relative complicated, the professional personnel is required for the remanufacture of an automatic transmission. Although the expert accomplishes the remanufacture, it is not guaranteed the efficiency, repeatability, and safety of remanufacture work. For the support of remanufacture work of automatic transmission the semi-automatic workstation is developed.