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Display and method for driving the same
| Details |
Inventors: Mori, Mitsuhiro; Kasahara, Mitsuhiro; Oe, Yoshinao; Tachibana, Hiroyuki;
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP)
Primary Examiner: Tran; Henry N.
Assistant Examiner: Lesperance; Jean
Attorney, Agent or Firm: Greenblum & Bernstein, P.L.C.
A plasma display having a discharge cell, the emission efficiency of which is improved by generating first and second discharges with one sustaining pulse. A first discharge is generated by increasing a voltage up to a maximal value through a LC resonance formed by a recovery coil and a panel capacitor. A second discharge is generated by connecting the panel capacitor to a power supply when the voltage falls a predetermined amount below the maximal value, thereby increasing the voltage to a predetermined level above the maximal value. |
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DETAILED DESCRIPTION 1.
A display device for selectively discharging a plurality of discharge cells to display an image, comprising: a display panel that includes said plurality of discharge cells; a first driving circuit that applies a driving pulse to a selected discharge cell in said display panel to induce a first discharge; and a second driving circuit that increases a voltage of the driving pulse, to induce a second discharge subsequently to said first discharge, after the voltage of said driving pulse is reduced by said first discharge, wherein an interval between a peak of said first discharge and a peak of said second discharge is not less than 100 ns nor more than 550 ns.
2.
The display device according to claim 1, characterized in that said second driving circuit induces said second discharge while a priming effect produced by said first discharge is obtained.
3.
The display device according to claim 1, characterized in that the interval between the peak of said first discharge and the peak of said second discharge is not less than 300 ns nor more than 550 ns.
4.
The display device according to claim 1, characterized in that the peak intensity of said second discharge is not less than the peak intensity of said first discharge.
5.
The display device according to claim 1, characterized in that said plurality of discharge cells respectively include capacitive loads, and said first driving circuit comprises an inductance circuit having at least one inductance element having its one end connected to said capacitive load, and a resonance driving circuit for outputting said driving pulse due to LC resonance by said capacitive load and said inductance element.
6.
The display device according to claim 1, characterized in that said first driving circuit comprises a first capacitive element provided outside said display panel as a current supply source for said driving pulse, said first capacitive element recovering charges stored in said discharge cells.
7.
The display device according to claim 1, characterized by further comprising a third driving circuit for increasing, after the voltage of the driving pulse is reduced by the second discharge, the voltage of the driving pulse, to induce third discharge subsequently to said second discharge
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Light Fixtures 
