Abstract: A power supply that is employable by a plasma display device for generating and supplying a plurality of voltages, the power supply including a first power source generating and supplying a first voltage, a transistor having a drain electrically coupled to the first power source, a first resistor having a first end coupled to the first power source and a second end electrically coupled to a gate of the transistor, a second resistor having a first end coupled to the second end of the first resistor and a second end electrically coupled to a second power source supplying a second voltage that is lower than the first voltage, and a capacitor having a first end coupled to a source of the transistor and a second end electrically coupled to the second power source. The coupling of the first end of the capacitor to the source of the transistor may form a third voltage supply node having the third voltage when the capacitor is charged.

Abstract: A plasma display device having a first switch is connected between the electrode and a first power supply that applies a high level voltage, and a second switch is connected between the electrode and a second power supply that applies a low level voltage. A capacitor for collecting power is connected to one end of at least one inductor. A first diode and a third switch are coupled in series between the electrode and a second end of at least one of the inductors. Also, a second diode and a fourth switch are coupled in series between the electrode and a second end of at least one of the inductors. Here, a clamping circuit unit connected to the second end of at least one of the inductors absorbs resonance energy generated by at least one of the inductors when the first and second switches are turned on.

Abstract: A method of expressing gray scales of a plasma panel display using the sum of weights assigned to subfields, including extracting a first gray scale arrangement including gray scale n using (k?1) subfields to gray scale m using k subfields from a second gray scale arrangement including gray scale 1 to gray scale m using k subfields between the 1st and the jth subfields when the number of subfields used for gray scale (i+1) is the same or greater than the number of subfields used for gray scale i, and generating a third gray scale arrangement including gray scales (n+p) to (m+p) by adding a weight p of the (j+1)th subfield to the first gray subfield arrangement including the gray scales n to m.

Abstract: A method for driving a plasma display panel. The plasma display panel includes a plurality of Y electrodes, a plurality of X electrodes, and a plurality of address electrodes. The Y electrodes are divided into a plurality of groups according to an order for scanning the Y electrodes and scan voltages are established to be varied for different groups when the scan voltages are sequentially applied to the Y electrodes. A period for gradually reducing a voltage at the Y electrodes and a bias voltage at the X electrodes is further included when the scan voltages are applied to the first Y electrode of each group of Y electrodes.

Abstract: In a plasma display device, a first transistor is coupled between an electrode and a power source supplying a VscL voltage, and a second transistor gradually changing a voltage of the electrode is coupled between the electrode and the power source. First and second resistors are coupled in series between the electrode and the second transistor. A node of the first and second resistors is coupled to a control terminal of a regulator, an anode terminal of the regulator is coupled to the electrode, and a cathode terminal of the regulator is coupled to the second transistor. The regulator has a reference voltage, and connects the anode terminal and the cathode terminal when the second transistor is turned on and a node voltage of a node between the first and second resistors is greater than the reference voltage and disconnects the anode terminal and the cathode terminal when the node voltage is less than the reference voltage.

Abstract: The present invention relates to a plasma display device and a driving method thereof. The plasma display device includes a first switch, and a second switch. The first switch has a first end electrically connected to a first power source that supplies a first voltage and a second end electrically connected to the plurality of first electrodes, and gradually increases a voltage of the plurality of first electrodes during a reset period. The second switch has a first end electrically connected to a second power source that supplies a second voltage that is less than the first voltage and a second end electrically connected to the plurality of first electrodes. The first and second switches are simultaneously turned on in the reset period.

Abstract: A plasma display and a driving method thereof. The plasma display includes a plurality of first electrodes, a first switch, a second switch, a third switch, and a first capacitor. The first switch is connected between a first power source to supply a first voltage and the plurality of first electrodes. The second switch includes a first terminal electrically connected to the plurality of first electrodes, a second terminal connected to a second power source to supply a second voltage that is lower than the first voltage, and a gate connected to a signal input terminal. The third switch includes a first terminal electrically connected to the plurality of first electrodes, and a gate electrically connected to the first signal input terminal. The first capacitor includes a terminal connected to the second power source, and another terminal connected to a node of the first power source and a second terminal of the third switch.

Abstract: A plasma display and a driving method thereof are disclosed. The plasma display includes a scan electrode, a scan integrated circuit, and a voltage supply unit. The scan integrated circuit applies a scan voltage and a non-scan voltage to the scan electrode during an address period. The voltage supply unit gradually decreases a voltage at the scan electrode to a first voltage during a reset period and supplies the scan voltage to the first terminal during the address period. The voltage supply unit includes a voltage generator that is connected to the first terminal to generate a second voltage by using the scan voltage during the reset period, and a first capacitor that is connected to the voltage generator, the first terminal, and a power source input terminal of the scan integrated circuit, and uses the second voltage supplied from the voltage generator to drive the scan integrated circuit.

Abstract: A driver circuit for a scan electrode of a plasma display panel is disclosed. The driver circuit has reduced voltage drop in the current path used to drive the scan electrode during a sustain period. Accordingly, the circuit provides improved power efficiency and speed.

Abstract: A method for driving a plasma display panel having first electrodes, second electrodes, and panel capacitors formed between the first and second electrodes. In a reset period: a first voltage corresponding to a voltage applied to the first electrode which is not selected in an address period is applied; a waveform which rises to a second voltage from the first voltage is applied to the first electrode; and the voltage at the first electrode is reduced to a third voltage.

Abstract: A plasma display device includes: a sustain drive unit that applies a sustain pulse having a first voltage and a second voltage lower than the first voltage to a plurality of first electrodes; a scan drive unit including a plurality of selection circuits coupled to the first electrodes and each including first and second switches; and a clamping unit including a clamping diode coupled to at least one of the selection circuits and clamps the voltage of the first electrode at the first voltage when it exceeds the first voltage. The plasma display device can prevent overshoot that can occur when the first voltage of the sustain pulse is applied to the first electrode in a sustain period so as to apply a stable discharge pulse. The magnitude of the overshoot may depend on the distance between the scan driving board and each of the plurality of selection circuits IC.

Abstract: A plasma display supplies a high level voltage and a low level voltage to first and second electrodes performing a sustain discharge in opposite phases during a sustain period. After a voltage of the first electrodes is decreased through a first inductor connected to the first electrodes, the first electrodes are floated to maintain the voltage of the first electrodes at a second voltage. Then, while the voltage of the first electrodes is changed from the second voltage to a low level voltage, the magnitude of the current flowing through a second inductor connected to the second electrodes is increased. Then, the voltage of the second electrodes is increased to a high level voltage using the second inductor. After energy is accumulated in the second inductor, the voltage of the second electrode is increased to the high level voltage.

Abstract: In a plasma display, an output terminal of a scan integrated circuit is coupled to a plurality of scan electrodes, a first input terminal of the scan integrated circuit is coupled to a voltage source supplying a VscH voltage, and a second input terminal thereof is coupled to a source of a transistor. A gate of a transistor is coupled to an output terminal of a gate driver, a first node of the gate driver is coupled to a first voltage source supplying a first voltage, and a second node thereof is coupled to the source of the transistor. A first terminal of a capacitor is coupled to the first node of the gate driver, and a second terminal thereof is coupled to the second input terminal of the scan integrated circuit.

Abstract: A plasma display device includes a plurality of first electrodes and a plurality of second electrodes, the plurality of first and second electrodes adapted to generate a sustain discharge so as to display an image on a screen, a first inductor including a first end coupled to the plurality of first electrodes, a second inductor including a first end coupled to the plurality of first electrodes, the second inductor having an inductance that is less than an inductance of the first inductor, a first driving block adapted to control a voltage of the plurality of first electrodes through the first inductor, and a second driving block adapted to control the voltage of the plurality of first electrodes through the second inductor, the second driving block is located closer to a lower portion of a screen than the first driving block.

Abstract: A plasma display device and a power supply thereof having a fewer number of power sources in the plasma display device is disclosed. The power supply generates a voltage corresponding to a Ve power source by using a variable resistance through a voltage distribution principle without including a Ve power source. In addition, since a power supply circuit including a thermistor is used in order to correspond to a discharge firing voltage which is changed by a temperature, a sustain discharge is stably generated by adjusting a Ve voltage without including a Ve power source.

Abstract: In a sustain period, a positive voltage is applied to an address electrode during at least one part of a period for applying a last sustain discharge pulse that is gradually increased and applied to a scan electrode. In this manner, an occurrence of misfiring between the address electrode and the sustain electrode of a discharge cell that is sustain-discharged without having been addressed in the next consecutive subfield is reduced or prevented.

Abstract: A plasma display includes a plurality of scan electrodes. A scan voltage is sequentially supplied to the plurality of scan electrodes, and a non-scan voltage that is higher than the scan voltage is supplied to scan electrodes to which the scan voltage is supplied. The non-scan voltage is generated by dividing a voltage that is higher than the non-scan voltage and the scan voltage. Thus, a voltage source for supplying the non-scan voltage can be eliminated.

Abstract: The present invention is to provide a method and apparatus for driving an AC PDP, where background luminance is reduced and the time required for a reset period is shortened while the stability and an address margin are sufficiently maintained, thus improving reset performance.

Abstract: A plasma display device and a driving method thereof. A sustain discharge before a reset period for initializing a cell which is sustain discharged in a previous subfield is generated as a weak discharge rather than a strong discharge. By generating a weak sustain discharge, the amount of wall charge formed in the exterior area of electrodes may be reduced. As a result, in the subsequent reset period, the wall charge can be controlled to be appropriate for addressing while preventing misfiring and low discharge.

Abstract: A sustain or scan electrode driver for a plasma display device including a power recovery circuit, a voltage storage circuit, and a switching circuit. Power recovery is achieved by a coupling a power source at a minus sustain voltage to the sustain or scan electrode driver circuit that includes a capacitor and an inductor for creating resonance with the panel capacitor and recovering the power used in sustain discharge. Power loss of switches used in the driver circuit may be reduced and power recovery efficiency may be increased by using an additional capacitor in the driver circuit that maintains terminals of the switch at a predetermined level.