Symmetric drive for an electroluminscent display panel

Details Symmetric drive for an electroluminscent display panel Symmetric drive for an electroluminscent display panel

1994-12-15

1996-08-27

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345212, G09G 330

Patent

active

055505570

ABSTRACT:
A power supply for providing a symmetric drive for an AC electroluminescent (EL) display panel includes a single power supply which provides two voltage signal values of opposite polarity V.sub.pos,V.sub.neg to the panel's row drivers. The supply also corrects the difference between the two voltage signal values V.sub.pos,V.sub.neg as a function of the difference between the maximum column driver voltage value V.sub.col and its nominal value to reduce latent images on the display panel. By utilizing a single switching regulator to generate the opposite polarity row voltages V.sub.pos,V.sub.neg the circuit complexity and cost associated with providing a symmetric drive for an EL panel is reduced.

REFERENCES:
patent: 4958105 (1990-09-01), Young et al.
patent: 5027036 (1991-06-01), Ikarashi et al.
patent: 5027040 (1991-06-01), Ikeda et al.
patent: 5144203 (1992-09-01), Fujita et al.

Affiliated with

Also associated with

Rating

Symmetric drive for an electroluminscent display panel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Symmetric drive for an electroluminscent display panel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Symmetric drive for an electroluminscent display panel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1058898