Energy-Recovery Driving Circuit for Plasma Display

• Main Authors: Chen-Chang Liu, 劉承璋
• Other Authors: Chern-Lin Chen
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/10478847916142476338

博士 === 國立臺灣大學 === 電機工程學研究所 === 89 === Plasma display panel (PDP) is praised for its large screen size, wide viewing angle, long life, and thinness, etc. It is a promising technology for applications such as high definition television (HDTV) or high-resolution computer workstation monitors. The main stream AC PDP basically comprises top and bottom insulating substrates, and a discharging gas sealed between them. Because the electrodes on the top substrate are covered with dielectric material, PDP is shown to have inherent capacitance during voltage transients. The panel could be continuously lighted up by AC square wave. In this dissertation, several prior arts are analyzed first and then two novel energy recovery drivers are proposed. The proposed circuits use the parallel resonance between the inductor and the intrinsic capacitance of PDP to mainly recover the energy lost by the capacitive displacement current of PDP. One of the proposed drivers could prevent the parasitic resonance caused by the inductance and the stray capacitance. In additions, the energy of the parasitic resonance can be sent back to the power source. It has not only simple structure (low cost) but also less energy loss. On the other hand, the second proposed driver could maintain the AC PDP to light up at lower voltage with current compensation. Besides, four switches of the full bridge are all operated with zero voltage switching (ZVS) turn-on.