Efficiencies measure greater than 2 lumens/watt in a PDP structure with auxiliary control electrodes creating lateral volume discharges. These sustain discharges can be more efficient than conventional surface discharges because they have a "positive like" column which occurs deeper in the PDP cell and is longer in space and time.
A new PDP cell structure called CSP (Charge Storage Pad) improves the luminous efficiency by 1.6 times and prevents cross talk between adjacent cells. The CSP, which is a conducting material, is inserted between the dielectric layer and the MgO film in the front plate. This CSP produces a longer time-averaged discharge path to get a high luminous efficiency and confines the discharge to prevent cross talk
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