Plasma display device and method of driving the same
AssigneeSamsung SDI Co., Ltd.
InventorsSeungwon CHOI, Seongjoon Jeong, Woojoon Chung, Sukjae Park
Life of this patent
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Abstract
A plasma display device including: a display panel including discharging cells; a driving unit that supplies a reset signal, an address signal, and a sustain signal to the discharging cells; and a logic controller that controls the driving unit. The driving unit includes a scan driver for generating the reset signal. The scan driver supplies a falling ramp pulse and step pulses to reset the discharge cells. The logic controller supplies a switch control signal to the scan driver, to control the generation of the step pulses.
Claims20
A plasma display device comprising:
- a display panel comprising discharging cells;
- a driving unit to supply a reset signal, an address signal, and a sustain signal to the discharging cells, the driving unit comprising a scan driver to generate the reset signal;
- and
- a logic controller to control the driving unit and to control the generation of the step pulses by the scan driver,
- wherein the reset signal comprises a falling ramp pulse and step pulses.
A method of driving a plasma display device, comprising:
- applying a sustain voltage to a scan electrode;
- reducing the sustain voltage at a first gradient, using a falling ramp pulse;
- and
- incrementally reducing the reduced sustain voltage to an erase voltage, at a second gradient, using step pulses.
A method of driving a plasma display device, the method comprising:
- applying a main reset pulse to scan electrodes of the plasma display device, the application of the reset pulse comprising,
- applying a sustain voltage to the scan electrodes,
- applying a rising ramp pulse to the scan electrodes, so as to apply a reset voltage to the scan electrodes,
- decreasing the voltage of the scan electrodes to the sustain voltage,
- applying a falling ramp pulse to the scan electrodes, so as to reduce the sustain voltage to a first voltage, at a first gradient, and
- applying step pulses to the scan electrodes, so as to incrementally reduce the first voltage to an erase voltage, at a second gradient.
Dependencies are inferred from the claim text.