Plasma display device, and apparatus and method for driving the same
AssigneeSamsung SDI Co., Ltd.
InventorsSuk-Ki Kim, Ji-Hyun Yoo, Seong-Joong Kim
Life of this patent
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Abstract
A plasma display device and method of driving the device is disclosed. The device includes a driving circuit for driving reset, address, and sustain periods during a subfield of a frame. The driving circuit includes a single switch which is used to drive a display electrode both during the reset period and during the sustain period. The switch being used for both periods removes the need for a second switch, thereby reducing manufacturing and design costs.
Claims20
A plasma display device comprising:
- a display electrode;
- a first switch that includes a first terminal coupled to a node, a second terminal coupled to a power source supplying a first voltage, and a control terminal, the node being coupled to the display electrode;
- a first gate driver that includes an output terminal, the first gate driver configured to output a first control signal having a first level to the control terminal of the first switch through the output terminal of the first gate driver, the first switch configured to gradually increase a voltage of the display electrode from a second voltage to a third voltage in response to the first control signal having the first level;
- a second gate driver that includes an output terminal, the second gate driver configured to output a second control signal having the first level to the control terminal of the first switch through output terminal of the second gate driver, the first switch configured to transmit the first voltage from the power source to the display electrode in response to the second control signal having the first level;
- and
- a switch turn-off unit configured to turn off the first switch in response to the first control signal having a second level and the second control signal having the second level, the second level being different from the first level.
A method of driving a plasma display device including a display electrode and a switch coupled between the display electrode and a power source supplying a first voltage, the method comprising:
- dividing a subfield into at least a reset period, an address period, and a sustain period;
- outputting a first control signal having a first level and a second control signal having a second level being different from the first level in a portion of the reset period;
- operating the switch to gradually increase a voltage of the display electrode from a second voltage to a third voltage in response to the first control signal having the first level;
- outputting the first control signal having the second level and the second control signal having the second level in the address period;
- turning off the switch in response to the first control signal having the second level and the second control signal having the second level;
- outputting the first control signal having the second level and the second control signal having the first level in a portion of the sustain period;
- and
- operating the switch to transmit the first voltage from the power source to the display electrode in response to the second control signal having the first level.
An apparatus for driving a plasma display device including a display electrode, the apparatus comprising:
- a switch coupled between the display electrode and a power source configured to supply a first voltage;
- a first gate driver that outputs a first control signal alternately having a first level and a second level;
- a second gate driver that outputs a second control signal alternately having the first level and the second level;
- a switch turn-off unit that turns off the switch in response to the first control signal having the second level and the second control signal having the second level,
- wherein the switch is configured to gradually increase a voltage of the display electrode from a second voltage to a third voltage in response to the first control signal having the first level, and
- the switch is configured to transmit the first voltage from the power source to the display electrode in response to the second control signal having the first level.
Dependencies are inferred from the claim text.