William H Skaggs

US Patent:

43463797, Aug 24, 1982

Filed:

Aug 12, 1980

Appl. No.:

6/177329

Inventors:

William G. Skaggs - Colorado Springs CO
John L. Curry - Colorado Springs CO

Assignee:

NCR Corporation - Dayton OH

International Classification:

G09G 328

US Classification:

340778

Abstract:

An improved drive scheme for a plasma display panel having a cell formed at the crossover point of each of the panel's column and segment electrodes and a control system for implementing this drive scheme. The drive scheme of the present invention comprises the simultaneous application of AC drive signals having positive and negative components to the column and segment electrodes associated with a designated cell of the panel. These drive signals are 180. degree. out-of-phase and are arranged to produce across the designated cell a voltage swing of sufficient magnitude to produce a discharge therein. In one embodiment of the drive scheme, the positive and negative components of each drive signal are equal. In a second embodiment of the drive scheme, the positive and negative components of each drive signal are not equal. The control system for implementing the drive scheme is comprised of a DC-to-AC converter for producing the AC drive signals, a driver circuit associated with each column electrode of the display panel and a driver circuit associated with each segment electrode of the display panel.

Address:

2524 Rimrock Dr, Colorado Spgs, CO 80915

VIN:

1J4GL48K57W540514

Make:

JEEP

Model:

LIBERTY

Year:

2007