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US 2008/0165170 A1Published application
Plasma display panel driving method and plasma display panel apparatus capable of displaying high-quality images with high luminous efficiency
AssigneePanasonic Corporation
InventorsNobuaki Nagao, Hidetaka Higashino, Junichi Hibino
Life of this patent
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Abstract
Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.
Claims19
-50. (canceled)
A plasma display panel driving method for a plasma display panel having a plurality of discharge cells, the plasma display panel driving method comprising:
- a set-up step for applying a set-up pulse to the plurality of discharge cells;
- a write step for applying a write pulse to selected discharge cells of the plurality of discharge cells;
- a discharge sustain step for applying a sustain pulse to the plurality of discharge cells;
- and
- an erase step for applying an erase pulse to the plurality of discharge cells,
- wherein the erase pulse applied during the erase step has a staircase waveform that rises in at least two steps.
3 more elements
A plasma display apparatus comprising:
- a plasma display panel including:
- a first substrate on which a plurality of pairs of a first electrode and a second electrode are arranged;
- a second substrate on which a plurality of third electrodes are arranged, the second substrate facing to the first substrate with a space therebetween;
- and
- a plurality of discharge cells formed between the first and second substrates and each discharge cell having a first electrode, a second electrode, and a third electrode;
- and
- a driving circuit operable to drive the plasma display panel by repeating a set-up period of applying a set-up pulse to the plurality of discharge cells, a write period of applying a write pulse to selected discharge cells of the plurality of discharge cells, a discharge sustain period of applying a sustain pulse to the plurality of discharge cells;
- and an erase period of applying an erase pulse to the plurality of discharge cells,
- wherein the driving circuit is operable to apply, in the erase period, the erase pulse having a staircase waveform that rises in at least two steps.
6 more elements
A plasma display panel driving method for a plasma display panel having a plurality of discharge cells, the plasma display panel driving method comprising:
- a set-up step for applying a set-up pulse to the plurality of discharge cells;
- a write step for applying a write pulse to selected discharge cells of the plurality of discharge cells;
- a discharge sustain step for applying a sustain pulse to the plurality of discharge cells;
- and
- an erase step for applying an erase pulse to the plurality of discharge cells,
- wherein each set-up pulse applied during the set-up step, each write pulse applied during the write step, a first sustain pulse applied during the sustain step, and each erase pulse applied during the erase step have a staircase waveform that rises and/or falls in at least two steps.
3 more elements
A plasma display apparatus comprising:
- a plasma display panel including:
- a first substrate on which a plurality of pairs of a first electrode and a second electrode are arranged;
- a second substrate on which a plurality of third electrodes are arranged, the second substrate facing to the first substrate with a space therebetween;
- and
- a plurality of discharge cells formed between the first and second substrates and each discharge cell having a first electrode, a second electrode, and a third electrode;
- and
- a driving circuit operable to drive the plasma, display panel by repeating a set-up period of applying a set-up pulse to the plurality of discharge cells, a write period of applying a write pulse to selected discharge cells of the plurality of discharge cells, a discharge sustain period of applying a sustain pulse to the plurality of discharge cells;
- and an erase period of applying an erase pulse to the plurality of discharge cells,
- wherein each set-up pulse applied during the set-up period, each write pulse applied during the write period, a first sustain pulse applied during the sustain period, and each erase pulse applied during the erase period have a staircase waveform that rises and/or falls in at least two steps.
6 more elements
A plasma display panel driving method for a plasma display panel having a plurality of discharge cells, the plasma display panel driving method comprising:
- a set-up step for applying a set-up pulse to the plurality of discharge cells;
- a write step for applying a write pulse to selected discharge cells of the plurality of discharge cells;
- a discharge sustain step for applying a sustain pulse to the plurality of discharge cells;
- and
- an erase step for applying an erase pulse to the plurality of discharge cells,
- wherein each set-up pulse applied during the set-up step, each write pulse applied during the write step, each sustain pulse applied during the sustain step, and each erase pulse applied during the erase step have a staircase waveform that rises and/or falls in at least two steps.
3 more elements
A plasma display apparatus comprising:
- a plasma display panel including:
- a first substrate on which a plurality of pairs of a first electrode and a second electrode are arranged;
- a second substrate on which a plurality of third electrodes are arranged,
- the second substrate facing to the first substrate with a space therebetween;
- and
- a plurality of discharge cells formed between the first and second substrates and each discharge cell having a first electrode, a second electrode, and a third electrode;
- and
- a driving circuit operable to drive the plasma display panel by repeating a set-up period of applying a set-up pulse to the plurality of discharge cells, a write period of applying a write pulse to selected discharge cells of the plurality of discharge cells, a discharge sustain period of applying a sustain pulse to the plurality of discharge cells;
- and an erase period of applying an erase pulse to the plurality of discharge cells,
- wherein each set-up pulse applied during the set-up period, each write pulse applied during the write period, each sustain pulse applied during the sustain period, and each erase pulse applied during the erase period have a staircase waveform that rises and/or falls in at least two steps.
7 more elements
Dependencies are inferred from the claim text.