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A Study of LCD Panel Cleaning Effect of Plasma Generation Power Source  

Kim, Gyu-Sik (Dept. of Electrical and Computer Engineering, The University of Seoul)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.45, no.5, 2008 , pp. 44-51 More about this Journal
Abstract
UV lamp systems have been used for cleaning of display panels of TFT LCD or Plasma Display Panel (PDP). However, the needs for high efficient cleaning and low cost made high voltage plasma cleaning techniques to be developed and to be improved. Dielectric-Barrier Discharges (DBDs), also referred to as barrier discharges or silent discharges have been exclusively related to ozone generation for a long time. In this paper, a 6kW high voltage plasma power supply system was developed for LCD cleaning. The 3-phase input voltage is rectified and then inverter system is used to make a high frequency pulse train, which is rectified after passing through a high-power transformer. Finally, hi-directional high voltage pulse switching circuits are used to generate the high voltage plasma. Some experimental results showed the usefulness of atmospheric plasma for LCD panel cleaning.
Keywords
LCD Panel; Plasma; Cleaning; DBD; High-power transformer;
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