Y G Kim

Publications (3)0 Total impact

• Conference Proceeding: Influence of auxiliary discharges on a multi-lamps backlight for large area LCD TVs

  Guangsup Cho, Y.S. Kim, D.H. Lee, W. Lee, J.W. Hong, D.W. Yang, Y.G. Kim, J.G. Kang, B.S. Kim, E.H. Choi, H.S. Uhm
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  ABSTRACT: In this study a new model is presented for a direct lighting backlight arrayed with multi-lamps of the cold cathode fluorescent lamps (CCFLs) and the external electrode fluorescent lamps (EEFLs). Avoiding the non-uniformity of luminance and the high voltage operation in a conventional direct lighting backlight driven by a single inverter power system for large area panels of LCD TVs, the auxiliary electrodes are placed under the reflection sheet in the backlight, of new model These electrodes lead to an auxiliary discharge at the center of the tube and also sustain the uniform field strength along the discharge tube inside of the longitudinal direction. These auxiliary discharges provide the luminance uniformity in each lamps and the low driving voltage.
  Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts. The 30th International Conference on; 07/2003
• Conference Proceeding: Measurement Of Secondary Electron Emission Coefficient From MgO Protecting Layer

  E.H. Choi, H.J. Oh, Y.G. Kim, J.J. Ko, T.S. Cho, D.I. Kim, G.S. Cho, S.O. Kang
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  ABSTRACT: First Page of the Article
  Microprocesses and Nanotechnology Conference, 1998 International; 08/1998
• Article: Effects of titanium and post-rolling heat treatments on the fatigue behaviour of high strength low alloy steels

  J.W. Hong, S.Y. Kim, Y.G. Kim, K.B. Kang
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  ABSTRACT: The effects of titanium and post-rolling treatments on the low cycle fatigue properties of weathering high strength low alloy steels were investigated. The post-controlled-rolling treatments were air colling, water spraying and normalizing. All the steels cyclically hardened, but the amounts of cyclic hardening varied with the post-rolling treatment. Water spraying produced initial cyclic hardening and softening, whereas air cooling or normalizing yielded cyclic hardening modes. The water-sprayed condition exhibited a better strain-life fatigue resistance than that of the air-cooled condition. Normalized titanium-bearing steel displayed the best strain-life fatigue resistance. The fatigue resistance was increased by adding titanium, compared with that of titanium-free steel. At 2.0% total strain the fatigue life was doubled by alloying with 0.1 wt.% Ti.
  Materials Science and Engineering.