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Slope Controlled Self Conditioning Waveform Disclosure Number: IPCOM000050673D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10

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Beidl, JR Criscimagna, TN [+details]


When cells in a plasma display panel are erased, the wall charge that resides in the ON cells is reduced to zero. If the wall charge is not reduced to zero, it must at least be reduced to a point below a specific threshhold. Classical theory holds that this remaining wall charge will decay further towards zero rapidly in a few sustain cycles following the erase operation. Experience has shown that this decay does not always occur rapidly, and that this slowly decaying wall charge can cause problems if adjacent cells are written shortly after the erase operation. This problem may be controlled by careful gap control and slope write waveforms to minimize the adverse effects of the residual wall charge.