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: In a driving circuit of a plasma display, a drain of a first transistor is coupled to a scan electrode and a switch driver is coupled between a gate and a source of the first transistor. The switch driver turns on the first transistor to reduce voltage of the scan electrode and charge a capacitor coupled to the source of the first transistor. When voltage across the capacitor is increased by a predetermined voltage, the first transistor is turned off and the scan electrode is floated. By repeating this operation, voltage of the scan electrode is gradually reduced. When a discharge is generated in a discharge cell of the plasma display by decreasing voltage of the scan electrode, voltage of the floated scan electrode is increased. The switch driver further discharges the capacitor when voltage variance of the floated scan electrode increases.

Abstract: Disclosed is a plasma display device and driving method thereof. Frames are divided into a set of subfields. A main reset waveform is applied in the first subfield in which non-reference data is applied. An auxiliary reset waveform is applied in other subfields so that address failure caused by loss of wall charges is reduced and low discharges are prevented.

Abstract: A power recovery circuit for a plasma display device and a driving method for the circuit. An inductor is coupled to form a resonance circuit and to generate a voltage difference between two electrodes of the same type that are coupled to the two terminals of a power recovery circuit. The resulting circuit allows formation of resonance between the two electrodes and power recovery from the panel capacitors formed in a PDP. Instead of hard-switching, the power recovery circuit is also used to maintain the voltage difference at the pre power recovery level after recovering power. As a result, power consumption is reduced when changing the voltage level of the two electrodes from the same voltage level to different voltage levels and vice versa. Further, elements having the same function are combined into a single element to simplify the circuit.

Abstract: A plasma display device includes a plasma display panel having discharge cells formed between a plurality of first electrodes and a plurality of second electrodes and a driving circuit dividing one frame into a plurality of subfields, each subfield including a reset period, an address period, and a sustain period, and applying a driving voltage to the first electrodes and the second electrodes. During a sustain period of each subfield, a sustain discharge pulse is alternately applied to the first and second electrodes for triggering a sustain discharge. A width of a last sustain discharge pulse applied to the second electrode is set to be greater than a width of other sustain discharge pulses for selected subfields. The subfields may be selected based on whether a total number of the sustain discharge pulses during the sustain period is less than a critical number of sustain discharge pulses.

Abstract: Disclosed is a plasma display device and driving method thereof. The plasma display device uses a single switch to increase and decrease voltages in a power recovery circuit. Accordingly, the number of switches is reduced, and a circuit and control signals are reduced by eliminating a switch, thereby reducing product costs.

Abstract: A plasma display panel. Delay circuits are added to a control terminal of a switch and a rising delay time is established to be different from a falling delay time in an address driving circuit so that voltages at adjacent address electrode may not be concurrently changed in the opposite directions. Accordingly, power consumption by the address driving circuit is minimized without a power recovery circuit.

Abstract: In a plasma display, image data are mapped on N subfields, and the subfield with the greatest weight is determined from among the mapped subfields. When the subfield with the greatest weight is the Kth subfield (K>M), grayscales of the image data are expressed with the mapped data of the (K?M+1)th subfield to the Kth subfield, and the mapped data from the first subfield to the (K?M)th subfield may be ignored.

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 plasma display panel and a driving method thereof. In the plasma display panel, Y electrodes are divided into a plurality of groups according to a scanning order and a final reset voltage is established to be different for each group. The plasma display panel includes a panel including a plurality of first electrodes and second electrodes, a plurality of selection circuits that are respectively coupled to the plurality of the first electrodes, and a driving circuit coupled to the second terminals of the selection circuits. The driving circuit includes a transistor which allows the voltage at the first electrodes to be reduced in a ramp style in a reset period.

Abstract: A plasma display device including a plasma display panel having a plurality of discharge cells and expressing gray scales in the plurality of discharge cells using a sum of weight values of subfields that are selected to be turned on from among a plurality of subfields. The plasma display device includes a controller for selecting subfields of which the discharge cells are to be turned on from among the plurality of subfields according to input gray scales, wherein when arranging subfields to express gray scales from a gray scale of 1 to a given gray scale, the controller controls an arrangement of subfields such that no discharge cell remains turned off for more than two consecutive subfields and is then turned on in another subfield of the same field.

Abstract: A plasma display panel and a driving method thereof The driving method includes estimating a gray scale of an input image signal and checking on/off patterns of discharge cells in a sub-field representing the gray scale, identifying an insufficient discharge cell having the insufficient discharging pattern among the on/off patterns of the discharge cells, and increasing the width of a scan pulse applied to first electrodes of the insufficient discharge cell during an address period of the sub-field in which the identified insufficient discharge cell is discharged. With this method, efficiency of an address-discharge can be enhanced.

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: A method for driving a plasma display panel. In the method, a gradually rising ramp voltage is applied in the reset period, and a final voltage of a falling ramp voltage is reduced to generate discharges in discharge cells. A difference between voltages applied to an address electrode and a scan electrode in a discharge cell to be selected is established to be greater than a maximum discharge firing voltage. Positive wall charges and negative wall charges are respectively accumulated in the scan electrode and the sustain electrode by applying the falling ramp voltage while the sustain electrode is biased at a predetermined voltage before the reset period.

Abstract: An initialization and driving method for a plasma display panel. When the plasma display panel is turned on, a voltage at a first electrode is increased from a first voltage to a second voltage, and a voltage at a second electrode is reduced from a fourth voltage to the fifth voltage for the purpose of forming wall charges in cells while a third voltage is applied to the second electrode. A voltage is applied to the first electrode and the second electrode to establish a difference between the first electrode and the second electrode to be alternately a sixth voltage and a negative voltage of the sixth voltage, and therefore the cell is discharged.

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 driving method of a plasma display panel. A second voltage is applied to a first electrode being selected in an order in which a plurality of first electrodes are selected, the second voltage being higher than a first voltage being applied to other first electrodes in a subfield of a first group of subfields. A fourth voltage is applied to the second electrode of a discharge cell being turned on among a plurality of discharge cells located in the first electrodes, the fourth voltage being lower than a third voltage being applied to other second electrodes. The discharge cell being turned on is selected in the subfield of the first group of subfields. Sustain discharge is performed at the selected discharge cell.

Abstract: A plasma display panel driver. The driver uses a high side switch of a scan IC to increase a voltage width of an initialization waveform which is applied in the initial operation of the plasma display panel set.

Abstract: A plasma display panel driving method and apparatus. In a falling period of a reset period, a voltage at a scan electrode is gradually reduced to the voltage Vnf from the voltage Vs while a sustain electrode is maintained at the voltage Va. In an address period, the voltage Va is applied to an address electrode of a discharge cell to be turned on while the sustain electrode is maintained at the voltage Va. Therefore, the number of voltage sources can be reduced by establishing the voltage applied to the sustain electrode to correspond to the voltage Va in the falling period of the reset period and in the address period.

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.