A Study of Effective Power-Reduction Methods for PDP Address-Driver ICs by Applying a Power-Dispersion Scheme

Yuji SANO  Akihiro TAKAGI  Yasuhiro SUGIMOTO  

IEICE TRANSACTIONS on Electronics   Vol.E86-C    No.8    pp.1774-1781
Publication Date: 2003/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Displays
plasma display,  driver circuits,  driver IC,  power dissipation,  

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It is very difficult to simultaneously achieve power and cost reductions in address-driver circuits of a plasma-display panel (PDP) unit in which an energy-recovery scheme utilizing the resonance of a series-connected inductor and electrode parasitic capacitors is used. This is because an increase in parasitic capacitance and high-speed circuit operation become necessary as the display panel becomes larger in size and higher in resolution. In particular, low-power operation of address-driver ICs is key to avoiding the installation of heat sinks on the ICs. We propose herein new power-dispersion methods that can greatly reduce the power dissipation of address-driver ICs even when large parasitic capacitance is driven at high speed. The proposed methods enable a reduction in the power dissipation of address-driver ICs without deteriorating the operational speed by dispersing their powers into external resistors, and by supplying power to address-driver ICs in two voltage steps during both rising and falling time intervals when the address changes. Our results indicate that the power dissipation of address-driver ICs and the total cost of the address drive unit of a plasma-display panel can be reduced to 29% and 53%, respectively, compared with those of the ICs and the unit that are driven by the conventional address-driving method.