AC Plasma Brightness Control Scheme
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18
This invention discloses a novel method of providing the sustain sequence to an AC Plasma Display Panel. The conventional sustain function is performed by providing a sustain waveform, such as shown in Fig. 1, to all cells in the panel simultaneously. This method performs sustain by a combination of selective pulsing (in time) in one polarity and bulk reset or sustain in the other polarity. Fig. 2 shows a sustain implementation in which the sustain waveform is decomposed and applied to the X and Y lines, while Fig. 3 illustrates in block form a system configuration for sustaining a plasma panel. Usually, X and Y drivers are integrated and supplied in modules of 16 to 32 or more drivers per module.