US 7,602,353 B2
	Method for driving a plasma display with matrix triggering in stages
Ana Lacoste, St Martin le Vinoux (France); Dominique Gagnot, Charavines (France); and Pascal Denoyelle, Meylan (France)
Assigned to Thomson Licensing, Boulogne-Billancourt (France)
Filed on Jul. 01, 2004, as Appl. No. 10/883,543.
Claims priority of application No. 03 08084 (FR), filed on Jul. 03, 2003.
Prior Publication US 2005/0068259 A1, Mar. 31, 2005
Int. Cl. G09G 3/28 (2006.01)

U.S. Cl. 345—60  [345/36; 345/37; 345/67]

18 Claims

1. Method for driving a plasma screen for displaying images comprising discharge regions each located at an intersection of a pair of sustain electrodes and an address electrode, said method comprising a succession of image frames or subframes which each comprise a sustain phase of the discharge regions which itself comprises the application of sustain voltage pulses VS between the electrodes of each pair, and, during each sustain pulse, the application of trigger voltage pulses VM to groups of discharge regions of the display, the sustain pulses being inadequate on their own for initiating discharges between the electrodes of the pairs, and the trigger pulses being designed to trigger these discharges in combination with the sustain pulses, wherein the trigger pulses are applied successively in stages and not simultaneously to the various groups of discharge regions during the period of each sustain pulse.