Ncr Corporation

Stacy W Hall

William E Coleman

A metal oxide coating is applied between the conductive base and the magnesium oxide dielectric of the input and/or erase electrode(s) in a plasma display device to prevent break-down of the dielectric.

Protected electrodes for plasma panels

A method for suppressing the objectionable visual flash associated with replacing patterns in a 'plasma-charge-transfer' shift mechanism type AC plasma shift display panel. During the erase mode, the load mode, or both, the phase voltage repetition rate is reduced until the time average luminous flux is substantially below the level of human perception in a room ambient light background. Upon entry into the hold mode, the phase voltage repetition rate reverts to a high frequency. The rapid rate generates patterns in the display panel which have a time average luminous flux adequate for viewing in the ambient light background. The visual flash is thereby suppressed without degrading the normal display characteristics of the panel.

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Colorado Springs, CO, United States of America

Stacy W Hall