Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Laser Marking for Light Guide Panel using Design of Experiment and Web-based Prototyping System

실험계획법과 웹기반 시스템에 의한 도광판의 레이저 마킹

  • 강혁진 (서울대학교 기계항공공학부) ;
  • 김형중 (서울대학교 기계항공공학부) ;
  • 추원식 (서울대학교 기계항공공학부) ;
  • 안성훈 (서울대학교 기계항공공학부)
  • Published : 2006.04.01
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Abstract

A light guide panel (LGP) is an element of the LCD back light unit, which is used for display devices. In this study, the laser marking process is applied to the fabrication of light guide panels as the new fabrication process. In order to obtain a light guide panel which has high luminance and uniformity, four principal parameters such as power, scanning speed, ratio of line gap, and number of line were selected. A Web-based design tool was developed to generate patterns of light guide panel at any location, and the tool may assist the designer to develop optimized patterns. Topcon-BM7 was used for luminance measurement of each specimen with $100mm{\times}100mm$ area. By Taguchi method optimized levels of each parameters were found, and luminance of $3523cd/cm^2$ and uniformity of 92% were achieved using the laser machined BLU.

Keywords

References

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