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US 2006/0066519 A1Published application
Plasma display apparatus
AssigneePioneer Corporation
InventorsTsutomu Tokunaga, Yoshichika Sato, Nobuhiko Saegusa
Life of this patent
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Abstract
A plasma display apparatus includes a plasma display panel. Pulse voltage values and/or pulse widths of a variety of drive pulses that are applied to the plasma display panel are adjusted in accordance with the accumulated usage time of the plasma display panel.
Claims20
A plasma display apparatus comprising:
- a plasma display panel including,
- a plurality of row electrode pairs extending in a row direction of the plasma display panel,
- a plurality of column electrodes extending in a column direction of the plasma display panel, and
- a plurality of discharge cells which serve as pixels at intersections between said plurality of row electrode pairs and said plurality of column electrodes, each said discharge cell having a discharge space;
- a magnesium oxide layer having magnesium oxide crystals that is formed on a predetermined face of each said discharge cell in contact with the discharge space and performs cathode luminescence light emission with a peak in a 200 to 300 nm waveband as a result of being excited upon electron beam irradiation;
- a drive portion that causes discharge in the discharge space by applying a drive pulse to each of the row electrode pairs and each of the column electrodes in accordance with a picture signal in each of a plurality of subfields that constitute a unit display period of the picture signal;
- and
- a control portion that adjusts a pulse voltage value and/or pulse width of the drive pulse in accordance with an accumulated usage time of the plasma display panel.
5 more elements
A plasma display apparatus comprising:
- a plasma display panel including,
- a plurality of row electrode pairs extending in a row direction of the plasma display panel,
- a plurality of column electrodes extending in a column direction of the plasma display panel, and
- a plurality of discharge cells at intersections between the plurality of row electrode pairs and the plurality of column electrodes, each said discharge cell having a discharge space;
- a magnesium oxide layer having magnesium oxide crystals that is formed on a predetermined face of each said discharge cell in contact with the discharge space and performs cathode luminescence light emission with a peak in a 200 to 300 nm waveband as a result of being excited through electron beam irradiation;
- a drive portion that causes discharge in the discharge space by applying a drive pulse to each of the row electrode pairs and each of the column electrodes in accordance with a picture signal in each of a plurality of subfields that constitute a unit display period of the picture signal;
- a panel temperature sensor for detecting a temperature of the plasma display panel;
- and
- a control portion that changes a pulse width of the drive pulse in accordance with the detected temperature of the plasma display panel.
6 more elements
Dependencies are inferred from the claim text.