PROCESS AND DEVICE FOR THE CONTROL OF A MICROTIP FLUORESCENT DISPLAY

摘要

DESCRIPTIVE The invention relates to a process for the control of a microtip fluorescent screen or display formed from pixels arranged in accordance with L rows and M columns of images able to have a discreet number of Q grey tones, in which the column voltage values are chosen in a strictly increasing sequence of N+1 values such that the row selection time being subdivided into S equal time intervals t, each voltage value is applied an integral number of times .DELTA.t, (NxS)+1 representing the number of grey levels, with N ? 1 and S ? 2. During a row selection time, the corresponding column voltage assumes a first value Va during a certain number of time intervals .DELTA.t, then during the remaining time intervals it additionally has a second value Vb following onto the first in the sequence of N voltages. The invention also relates to a device for controlling such a display. (Fig. 4)