Write and Erase Pulses with Opposite Polarities
Original Publication Date: 1981-May-01
Included in the Prior Art Database: 2005-Feb-11
On high resolution AC plasma display panels where the resolution exceed 30-50 picture elements/inch, the wall charge produced during sustain spreads along the conductors beyond the imaginary midpoint between adjacent cells. This is especially true if the chamber gap is excessive for the line width and pitch. When a single cell is erased (worst case), a small amount of wall charge is left between cells that cannot be erased by repetitive erase cycles. With this residual wall charge in place, the cell will turn ON when adjacent cells are written just as if it had been selected. The dielectric cross-talk of the adjacent write pulses, combined with the residual wall charge, will turn the cell ON.