Claims
- 1. A method of driving a plasma display panel having first and second pluralities of electrodes disposed to traverse each other in matrix form and each being covered with a dielectric layer whereby a plurality of display discharge points are formed across a confined discharge gas between said dielectric layers, a cursor indicating line being formed of selected discharge points associated with a third plurality of electrodes, wherein said method comprises the steps of:
- a. applying a sustain voltage of substantially square wave form to said first, second and third pluralities of electrodes;
- b. applying a write signal to selected ones of said first and second pluralities of electrodes defining selected display discharge points;
- c. applying a priming pulse coincident in timing with said write signal to said third plurality of electrodes associated with said cursor indicating line establishing discharge across the cursor indicating discharge points at substantially the same timing as discharge is established by the writing signal across said selected display discharge points and
- d. continuing to apply said sustain voltage after said priming pulse and said write signal terminate, to maintain said discharge at said cursor indicating discharge points and said selected display discharge points.
- 2. A method of driving a plasma display panel as claimed in claim 1, wherein the cursor is formed at a first character position upon the plasma display panel and is shifted to a second character position, including the steps of applying a priming voltage coincident with a given timing to said third plurality of electrodes on the cursor indicating line, applying a write signal, superimposed on said priming voltage of such polarity and magnitude to exceed a firing voltage of the discharge points of the plasma display panel, to selected ones of said second plurality of electrodes corresponding to said second character position whereby discharge is caused at the cursor discharge points of said second character position and initial electrons from said discharge at said first character position prime selected display discharge points at the corresponding second character position.
- 3. A method of energizing a plasma display panel having first and second pluralities of row and column electrodes, respectively, disposed to traverse each other in matrix form, each being covered with a dielectric layer whereby a plurality of discharge points are formed across a confined discharge gas between said dielectric layers, said discharge points comprising display discharge and fire priming points and each having a given firing voltage, said method comprising the steps of:
- a. applying periodically a fire priming voltage through at least one of said first and second electrodes associated with fire priming discharge points to the corresponding, at least one fire priming discharge point of sufficient magnitude to cause a discharge thereacross in time not later than the application of a write voltage to selected ones of the display discharge points, and of a polarity such that the discharge at the corresponding, said at least one fire priming discharge point is sustained by a sustain voltage pulse applied to electrodes traversing said at least one electrode associated with said at least one fire priming discharge point, whereby initial electrons from the discharge at said at least one fire priming discharge point serve to prime the display discharge points;
- b. applying an alternating sustain voltage through selected ones of said first and second electrodes to the associated, selected ones of the display discharge points of sufficient magnitude to sustain a discharge in the selected ones of the display discharge points, but less than the magnitude of the firing voltage thereof; and
- c. selectively applying a write voltage which exceeds the firing voltage through a selected one of said first and second electrodes to the corresponding, said selected ones of the display discharge points at a predetermined timing in the interval of the sustain voltage.
- 4. A method of energizing a plasma display panel as claimed in claim 3, wherein the step of applying an alternating sustain voltage comprises applying first and second sustain voltages, each of substantially square wave form and of different phase, to respective ones of said first and second pluralities of electrodes associated with the display discharge points; further applying a train of sustain pulses through selected ones of said first plurality of electrodes corresponding to selected fire priming points; and said step of applying a fire priming voltage comprises applying a first train of priming pulses of a selected polarity and magnitude, through selected ones of said first plurality of electrodes to the corresponding, selected fire priming points, superimposed on the first train of sustain pulses such that the combined magnitudes of the first train of priming pulses and the train of sustain pulses exceeds the firing voltage of the selected fire priming points; applying a second train of priming pulses opposite in polarity to the first train of priming pulses and having substantially the same timing as the application of the write voltage, through selected ones of said second plurality of electrodes to the associated, selected fire priming points, whereby a discharge is caused by the second train of priming pulses at the given timing to effect priming of the display discharge points.
- 5. A method of energizing a plasma display panel as claimed in claim 3, wherein the sustain voltage is of a given period, and the period that the priming voltage is impressed to the one discharge point is an integral fraction of the given period of the sustain voltage.
- 6. A method of energizing a plasma display panel as claimed in claim 3, wherein the one discharge point to which the priming voltage is applied is disposed on a peripheral portion of the plasma display panel.
- 7. A method of energizing a plasma display panel having first and second pluralities of row and column electrodes, respectively, disposed to traverse each other in matrix form and each said plurality of electrodes being covered with a dielectric layer whereby a plurality of discharge points defined by the intersections of said row and column electrodes are formed across a discharge gas confined between said dielectric layers, said discharge points comprising display and fire priming discharge points defined by respectively associated ones of said row and column electrodes, said method comprising the steps of:
- a. applying a sustain voltage pulse to those of said row and column electrodes associated with display discharge points;
- b. selectively applying a write voltage pulse to the electrodes associated with said display discharge points at a predetermined timing synchronized with the application of said sustain voltage pulse; and
- c. applying a priming voltage pulse to at least one of each of said row and column electrodes defining said fire priming discharge points, in which said priming voltage pulse (1) is of sufficient magnitude to cause a discharge at fire priming points formed at the intersecting points of said fire priming electrodes with the electrodes crossing them, (2) occurs in time not later than the timing of the application of said write voltage; and (3) is of such a polarity that the discharge at said fire priming points is sustained by said sustain voltage pulse.
- 8. A method of energizing a plasma display panel having first and second pluralities of row and column electrodes, respectively, disposed to traverse each other in matrix form and each said plurality of electrodes being covered with a dielectric layer whereby a plurality of discharge points defined by the intersections of said row and column electrodes are formed across a discharge gas confined between said dielectric layers, said discharge points comprising display and fire priming discharge points defined by respectively associated ones of said row and column electrodes, said method comprising the steps of:
- a. applying sustain voltage pulses to those of said row and column electrodes associated with display discharge points;
- b. selectively applying a write voltage pulse to said electrodes associated with said display discharge points at a predetermined timing synchronized with the application of said sustain voltage pulses; and
- c. applying priming voltage pulses to at least one of each of said row and column electrodes selected as a fire priming electrode; and wherein:
- said priming voltage pulses comprise first and second voltage pulses of opposite polarities, each said first priming voltage pulse being superimposed on a sustain voltage pulse applied to the electrodes traversing said fire priming electrode and having a voltage of such magnitude when superimposed with said sustain voltage pulse as to exceed a firing voltage at the discharge points formed at the intersecting points of said fire priming electrode and said traversing electrodes; said second priming voltage pulse having a voltage of sufficient magnitude to sustain discharge; and said first priming voltage pulse being applied at the same timing as the application of said sustain voltage pulse.
- 9. A display system comprising:
- a plasma display panel including first and second pluralities of row and column electrodes, respectively, disposed to traverse each other in matrix form and each said plurality of electrodes being covered with a dielectric layer whereby a plurality of discharge points defined by the intersection of said row and column electrodes are formed across a discharge gas confined between said dielectric layers, said discharge points comprising display and fire priming discharge points defined by respectively associated ones of said row and column electrodes,
- a sustain voltage pulse generator connected to those of said row and column electrodes associated with display discharge points for applying a sustain voltage pulse to the said electrodes associated with said display discharge points;
- an address driver for selectively applying a write voltage pulse to said electrodes associated with the display discharge points at a predetermined timing synchronized with the application of said sustain voltage pulse; and
- means for applying a priming voltage pulse to at least one of each of said row and column electrodes selected as a fire priming electrode, said priming voltage pulse applying means including
- means for producing a voltage of sufficient magnitude to cause a discharge at fire priming points formed at the intersecting points of each said fire priming electrode and the electrodes traversing them and of such a polarity that the discharge caused by the said priming voltage pulse at said fire priming points is sustained by said sustain voltage pulse; and
- means for controlling the timing of said voltage producing means to apply the voltage from said voltage producing means to said fire priming electrodes at a time not later than the time of application of the write voltage pulse from said address driver.
- 10. A display system comprising:
- a plasma display panel including first and second pluralities of row and column electrodes, respectively, disposed to traverse each other in matarix form and each of said plurality of electrodes being covered with a dielectric layer whereby a plurality of discharge points defined by the intersection of said row and column electrodes are formed across a discharge gas confined between said dielectric layers, said discharge points comprising display and fire priming discharge points defined by respectively associated ones of said row and column electrodes,
- a sustain voltage pulse generator connected to those of said row and column electrodes associated with display discharge points for applying sustain voltage pulses to the said electrodes associated with said display discharge points;
- an address driver for selectively applying write voltage pulses to said electrodes associated with the display discharge points at a predetermined timing synchronized with the application of said sustain voltage pulses; and
- means for applying a priming voltage pulse to at least one of each of said row and column electrodes selected as a fire priming electrode, said means including
- a voltage source for producing a voltage which is superimposed on the sustain voltage pulse applied from said sustain voltage pulse generator to the electrodes traversing said fire priming electrodes to establish a voltage at the discharge points defined thereby which exceeds a firing voltage of said discharge points;
- priming voltage pulse generating means for producing alternately in opposite polarities a first pulse of the voltage of said voltage source and a second pulse of a voltage of sufficient magnitude to sustain a discharge following said first pulse; and means for controlling the timing of said priming voltage pulse generating means to apply said first priming voltage pulses from said priming voltage pulse generating means at the same timing as the application of said sustain voltage pulses from said address driver.
Priority Claims (1)
Number |
Date |
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Kind |
46-104841 |
Dec 1971 |
JA |
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Parent Case Info
This is a continuation of application Ser. No. 317,643, filed Dec. 22, 1972.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3644925 |
Kupsky |
Feb 1972 |
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3683364 |
Holz et al. |
Aug 1972 |
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Continuations (1)
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Number |
Date |
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Parent |
317643 |
Dec 1972 |
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