Analysis of Sustaining Waveforms for Improving Luminance and Luminous Efficacy in AC Plasma Display Panels

Abstract

Wall voltage and priming particles are the main parameters to enable the improvement of luminance and luminous efficacy in AC plasma display panels. By moderately controlling the sustaining pulsewidth ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">on</sub> ) and the time interval between successive sustaining pulses ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> ), the wall voltage and the amount of priming particles in the discharge space can be manipulated. In this brief, two types of sustaining waveforms, namely, negative- and positive-going pulses (which have different potential distributions during the off period), are investigated to analyze their effect on luminance and luminous efficacy. In both waveforms, the sustaining pulsewidths and the time intervals between the pulses have been varied to control the wall voltage and priming particles. Each sustaining waveform showed different trends in the resulting luminance and luminous efficacy with the sustaining pulsewidth and time intervals used. The <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">on</sub> time was a dominant factor in the negative-going pulse waveform, while the <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> time was more important in the positive-going pulse waveform.