Staggered refresh pulse generator for a TFEL panel

Details Staggered refresh pulse generator for a TFEL panel Staggered refresh pulse generator for a TFEL panel

1986-01-22

1987-09-01

Moore, David K.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151692, 340805, 340760, 340781, G09G 330

Patent

active

046911448

ABSTRACT:
A TFEL panel includes orthogonally disposed sets of scanning and data electrodes. The scanning electrodes are strobed with a preconditioning voltage and data is provided to selected data electrodes simultaneously with the line by line strobing of the scanning electrodes. A refresh pulse is applied to the screen once per frame of data at times which vary from frame to frame. This may be accomplished either by varying the time of occurrence of the refresh pulse within each frame or by holding the time of occurrence of the refresh pulse constant and varying the strobing sequence of the scanning electrodes. This technique prevents certain portions of the screen from generating a latent image due to charge accumulation which would otherwise result from the timing asymmetry between the scanning of certain electrodes and the fixed timing of the refresh pulse.

REFERENCES:
patent: 4479120 (1984-10-01), Ohba et al.

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