US 6,144,349 A · Plasma display device

Abstract

The present invention relates to a plasma display device which limits a generation of electromagnetic wave. The plasma display device has first and second drive circuits for applying a drive voltage to first and second display electrode pair. Further, a direction of a charge current flowing at said first display electrode pair when said drive voltage is applied by said first drive circuit is opposite on said plasma display panel to a direction of a charge current flowing at said second display electrode pair when said drive voltage is applied by said second drive circuit. According to the present invention, a transitional charge/discharge current, which is generated upon the application of a drive voltage to one of the display electrodes, and a light emission discharge current flow in opposite directions on the panel. Thus, electromagnetic waves that are generated by the inductances of the display electrode pair cancel each other out. In addition, the currents flowing in opposing directions cancel each other out on the common ground wirings which are connected to the ground wirings of the drive circuits, and electromagnetic wave is reduced.

Claims23

Dependent claims

A plasma display device comprising:

a first insulating substrate on which a plurality of display electrode pairs are separately formed along display lines where plasma discharge for display is performed, said plural display electrode pairs including a plurality of first display electrode pairs and a plurality of second display electrodes pairs;
a second insulating substrate on which a plurality of address electrodes are formed so as to intersect said display electrode pairs, said first and said second insulating substrates being located opposite each other with an intervening discharge space therebetween;
a first drive circuit for applying a drive voltage to said first display electrode pairs;
and
a second drive circuit for applying a drive voltage to said second display electrode pairs,
wherein a direction of a charge current flowing at said first display electrode pairs when said drive voltage is applied by said first drive circuit is opposite on said plasma display panel to a direction of a charge current flowing at said second display electrode pairs when said drive voltage is applied by said second drive circuit.

3 more elements

A plasma display device comprising:

a first insulating substrate on which a plurality of display electrode pairs are separately formed along display lines where plasma discharge for display is performed, said plural display electrode pairs including a plurality of first display electrode pairs, each of which has a first electrode and a second electrode parallel to said first electrode, and a plurality of second display electrode pairs, each of which has a third electrode and a fourth electrode parallel to said third electrode, said plurality of display electrode pairs alternately discharging plasma from one electrode to the other and vice versa, during a first period and a second period;
a second insulating substrate on which a plurality of address electrodes are formed so as to intersect said display electrode pairs, said first and said second insulating substrates being located opposite each other with an intervening discharge space therebetween;
a first drive circuit, provided at one side of said display electrode pairs of said plasma display panel, for applying a drive voltage to said first electrode during said first period;
a second drive circuit, provided at the other side of said display electrode pairs of said plasma display panel, for applying a drive voltage to said second electrode during said second period;
a third drive circuit, provided at one side of said display electrode pairs of said plasma display panel, for applying a drive voltage to said third electrode during said second period;
and
a fourth drive circuit, provided at the other side of said display electrode pairs of said plasma display panel, for applying a drive voltage to said fourth electrode during said first period.

4 more elements

A plasma display device comprising:

a first insulating substrate on which a plurality of display electrode pairs are separately formed along display lines where plasma discharge for display is performed, wherein each of said plural display electrode pairs includes Y electrode and X electrode, said display electrode pairs alternately discharging plasma from one electrode to the other electrode and vice versa, during a first period and a second period;
a second insulating substrate on which a plurality of address electrodes are formed so as to intersect said display electrode pairs, said first and said second insulating substrates being located opposite each other with an intervening discharge space therebetween;
a first drive circuit, provided at one side of said display electrode pairs of said plasma display panel, for applying a drive voltage to odd numbered Y electrodes during said first period;
a second drive circuit, provided at the other side of said display electrode pairs of said plasma display panel, for applying a drive voltage to odd numbered X electrodes during said second period;
a third drive circuit, provided at one side of said display electrode pairs of said plasma display panel, for applying a drive voltage to even numbered X electrodes during said second period;
and
a fourth drive circuit, provided at the other side of said display electrode pairs of said plasma display panel, for applying a drive voltage to even numbered Y electrodes during said first period.

4 more elements

Dependencies are inferred from the claim text.

Plasma display device

Life of this patent

Plasma display device

Life of this patent

Abstract

Claims23