Abstract: This invention generally relates to apparatus and methods for driving passive, electro-optic displays with greater efficiency. The invention is particularly suitable for driving passive matrix organic light emitting diode displays.

Abstract: A plasma display apparatus and a method of driving the plasma display apparatus are disclosed. The plasma display apparatus includes a plasma display panel including a plurality of electrodes, a driving pulse controller for outputting a timing control signal and a driver. The driver supplies a set-down pulse to at least one electrode of the plurality of electrodes depending on the timing control signal. The first set-down pulse gradually falls from a first voltage to a second voltage during a first period, is maintained at the second voltage during a second period, and gradually falls from the second voltage to a third voltage during a third period.

Abstract: Disclosed are a driving device and a driving method for a plasma display panel (PDP). A panel capacitor is formed by a scan electrode and a sustain electrode. The charges are moved from the panel capacitor to a capacitor by turning on a transistor which is connected between the scan electrode and the capacitor. By this method, the voltage of the panel capacitor is steeply reduced so that a discharge is generated in the panel capacitor. When the voltage of the capacitor increases because of the charges moved from the panel capacitor, the gate-source voltage of the transistor is reduced. As a result, the transistor is turned off so that the scan electrode is floated. Accordingly, the discharge is steeply quenched so that the wall charges are precisely controlled. After the capacitor is discharged, the above-noted operation may be repeated.

Abstract: In a driving method of a plasma display panel having a plurality of first electrodes provided so as to correspond to phosphors of a plurality of emitted light colors and having a plurality of second electrodes disposed so as to intersect with the first electrodes, the first electrodes for each of the emitted light colors that are provided so as to correspond to at least one of the phosphors of the emitted light colors among the first electrodes are brought into an electrically open state at the part of driving timings in a driving period. By doing so, gas discharge currents that flow through the first electrodes for each of the emitted light colors can be suppressed.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: A PDP display apparatus driving method for performing multi-level gradation display by constituting one frame of a plurality of subfields assigned different weights, wherein in a subfield in which a relative luminance ratio corresponds to a lowest weight, display is performed according to discharges in two periods only, the periods being an initialization period and a write period.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: A plasma display device is provided which can stabilize discharge and improve display quality. In the plasma display device, a rear edge part of a sustain pulse to be applied at the end of a sustain period of each of the subfields is formed of a first section in which a voltage value slowly changes from a peak voltage value of the sustain pulse to a predetermined first voltage value, a second section in which the first voltage value is maintained for a predetermined period, and a third section in which the voltage value slowly changes from the first voltage value to a second voltage value having polarity different from that of the first voltage value.

Abstract: A voice circuit is arranged on a chassis member. The voice circuit comprises a voice output amplifier and a high-frequency bypass unit. An output terminal of the voice output amplifier is connected to one end of a voice coil in a speaker through an interconnection, and is grounded through a high-frequency bypass unit. The voice output amplifier supplies a voice current to the voice coil through an interconnection. The resonance frequency of the high-frequency bypass unit is set to the same frequency as that of a discharge current flowing in the chassis member. A high-frequency induced current generated in the voice circuit due to the discharge current flowing in the chassis member flows to a ground terminal through the high-frequency bypass unit.

Abstract: An apparatus for driving a PDP is capable of controlling a scan reference voltage when set up pulses are supplied to scan electrodes Y1 to Ym in a set up period of a reset period and when the scan reference voltage is supplied to the scan electrodes in an address period to reduce the generation of noise. The apparatus for driving the PDP comprises scan electrodes, a scan reference voltage supply comprising a resistance for applying a scan rising waveform that rises to a scan reference voltage with a second slope to the scan electrodes after a rising ramp waveform and a falling ramp waveform having a first slope have been applied to the scan electrodes, and a negative scan voltage supply for applying a negative scan pulse that falls from the scan reference voltage applied by the scan reference voltage supply to the scan electrodes.

Abstract: A plasma display apparatus comprises a scan electrode and a sustain electrode; a data electrode for intersecting the scan electrode and the sustain electrode; and a pulse controller for controlling to apply a pulse having an opposite phase to the scan electrode and the sustain electrode during a reset period and apply a negative sustain pulse to the scan electrode and the sustain electrode during a sustain period, wherein a distance between the scan electrode and the sustain electrode is longer than that between the sustain electrode and the data electrode. Therefore, a surface discharge mode can be used even when applying negative pulses to the sustain electrode in a reset period, and a size and cost of a plasma display apparatus can be reduced by applying a negative pulse of the same magnitude as a sustain voltage without a separate negative voltage source.

Abstract: The present invention relates to a plasma display apparatus and driving method thereof. In accordance with a plasma display apparatus and driving method thereof, widths of scan pulses are different depending on locations of the scan lines. Since scan pulse widths are set depending on locations of the scan lines, high speed driving is possible, a sustain period can be secured and luminance can be increased.

Abstract: A plasma display device and driving method thereof has a peak value of one frame is detected and then converted. A grayscale or a grayscale value is converted according to an original peak value and a converted peak value, and a total number of sustain pulses applied to the one frame is reset such that a brightness corresponding to the converted grayscale or grayscale value is set to be equal to a brightness corresponding to the original grayscale or grayscale value. In such a manner, the numbers of on-subfields and useable subfields corresponding to the grayscale of the input video signal are increased, so that the discharge characteristics are enhanced and the false contour is reduced.

Abstract: A method for driving a plasma display panel that can generate stable and reliable discharge without making the circuit configuration of the driver complicated. According to this drive method, a plasma display panel where a pixel cell is formed at each intersection of a plurality of column electrodes and a plurality of row electrode pairs is driven such that, in a sustain process of at least one subfield out of subfields in one field display period, an auxiliary discharge is generated along with the sustain discharge in the pixel cell by applying an auxiliary pulse to the column electrode only while a first sustain pulse is being applied.

Abstract: A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.

Abstract: A lighting rate is calculated from a video signal input in a plasma display device, and an output current of DC-DC converter, which is the same as a discharge current in a sustain period corresponding to the lighting rate, is synchronized with a generation timing of discharge current. With such a configuration, even if discharge current in the sustain period of each subfield is rapidly changed, a sustain pulse voltage can be kept constant.

Abstract: A method for driving a plasma display panel, including a plurality of display electrode pairs and a plurality of address electrodes, and which includes at least an address period and a sustain discharge period. In the address period, performing address processing, between the address electrodes and a display electrode configured as either a set of odd or even numbered display electrodes, sequentially to all of one of the sets of display electrode pairs, and thereafter address processing, between the address electrodes and a display electrode configured as the other set of display electrode pairs, sequentially to all of the other set of display electrode pairs. In the sustain discharge period, supplying at least one first sustain discharge pulse to the one set of display electrode pairs, and supplying at least one second sustain discharge pulse to the other set of display electrode pairs.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: The present invention relates to a plasma display apparatus, and more particularly, to a plasma display apparatus and driving method thereof, wherein a sustain waveform can be improved. According to the present invention, the plasma display apparatus includes a plasma display panel comprising a plurality of sustain electrode pairs wherein each of the sustain electrode pairs has a scan electrode and a sustain electrode, and a sustain waveform controller for controlling a rising time or a falling time of sustain waveforms supplied to at least one of the sustain electrode pairs according to a temperature of the plasma display panel. The sustain waveform controller controls a time corresponding to a time point at which a sustain discharge is generated, of the rising time and the falling time. The present invention improves a plasma display apparatus and driving method thereof. Accordingly, there is an effect in that erroneous discharge depending on a temperature of a plasma display panel can be prevented.

Abstract: An energy recovery circuit is provided that includes: a panel capacitor formed equivalently in a scan electrode and a sustain electrode, a scan electrode driver installed at a side of the scan electrode of the panel capacitor to supply a sustaining pulse to the side of the scan electrode, and a sustain electrode driver installed at a side of the sustain electrode of the panel capacitor to supply the sustaining pulse to the side of the sustain electrode. The energy recovery circuit may further include a first diode coupled to the scan electrode side of the panel capacitor, a second diode coupled to the sustain electrode side of the panel capacitor, a first inductor commonly coupled to the sustain electrode side and the scan electrode side of the panel capacitor, a path providing part coupled to the first inductor, and a single source capacitor connected to the path providing part.

Abstract: Disclosed is a method for driving a plasma display panel that can prevent flicker and double false contour in a 50 Hz driving. The method includes: providing a plurality of 50 Hz frames which are inputted using subfield weights for constructing a 60 Hz frame; and rearranging the plurality of 50 Hz frames into a plurality of 60 Hz frames.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: A method for driving an AC type surface-discharge display device which has cells arranged in a matrix. Each of the cells has at least three electrodes including a pair of main electrodes on every line of the matrix and an address electrode on every column of the matrix. The method includes providing an address preparation period applying a charge producing pulse and applying a charge adjusting pulse. The charge adjusting pulse has a waveform monotonously falling from a reference potential and a negative polarity and is applied to the second main electrode used as a scan electrode and generates feeble electric discharges between the first and second main electrodes. The feeble electric discharges are accompanied by a decrease of the wall voltage formed by the charge producing pulse.

Abstract: The use of motion sensing to perform sophisticated command control and data input into a portable device is disclosed. A motion sensor is embedded or fixedly attached to a portable device to measure movement, motion or tilt of the device in one-, two- or three-dimensions when the portable device is used to air-write or make gestures. The use of full motion information such as rate of change of motion or tilt angle to perform functions and commands is also disclosed. In addition, the use of air-writing to input search criteria and filter schemes for portable devices to manage, search, and sort through various data, files, and information is disclosed.

Abstract: A plasma display apparatus and a method of driving a plasma display panel are disclosed. The plasma display apparatus includes a plasma display panel including a first electrode and a second electrode, and an integrated sustain driver. The integrated sustain driver supplies a sustain signal of a positive polarity and a sustain signal of a negative polarity to the first electrode during a sustain period. Two light emissions occur during at least one period of a supply period of the sustain signal of the positive polarity or a supply period of the sustain signal of the negative polarity.

Abstract: A problem is to be solved in that there is to be provided a display device and a display method allowing two or more sorts of sustaining pulses to be employed by switching over the pulses depending on the state of display in such a manner as to achieve characteristics including high light emission efficiency/decrease in streaking and high luminance and the like. The display device is provided wherein one frame image contains a plurality of sub-frames, including: a detection section detecting a state of display: a sustaining pulse output section to select and output one out of two or more sorts of sustaining pulses for a display for each sub-frame depending on the state of display.

Abstract: Provided are a plasma display panel (PDP) and a driving method thereof. The PDP includes a first substrate and a second substrate disposed in parallel and spaced apart from one another. Address electrodes are provided on the first substrate with a first dielectric layer over the address electrodes and the first substrate. Barrier ribs are provided on the dielectric forming a plurality of discharge spaces in which phosphor layers are provided. Sustain electrodes are formed on the second substrate facing the first substrate and are arranged crossing the address electrodes. A second dielectric layer is formed over the address electrodes and on the second substrate, and a protective layer including MgO of at least 99.6% purity by weight is formed over the second dielectric layer by a sintering process.

Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel comprising a scan electrode and a sustain electrode. When an image displayed on the plasma display apparatus is a fixed image pattern which has a rate of change equal to or less than a threshold rate of change in input image data and is displayed as a picture for a duration equal to or more than a threshold duration of time, the number of sustain pulses or a magnitude of a voltage of a sustain pulse supplied to at least one of the scan electrode or the sustain electrode in a sustain period of a subfield subsequent to the threshold duration of time is controlled.

Abstract: There is provided a plasma display apparatus and a driving method of a plasma display panel. The plasma display apparatus comprises a plasma display panel comprising a first electrode and a second electrode, and an electrode driver alternatively applying a sustain pulse of a first polarity to the first electrode and the second electrode and applying a pulse of a second polarity opposite to a first polarity after a magnitude of a voltage of a sustain pulse of a first polarity is maximized. Therefore, it is possible to increase discharge efficiency without rising a driving voltage or increasing an electrode space by increasing an amount of space discharge.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized-by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: The present invention relates to a plasma display apparatus and driving method thereof. The plasma display apparatus according to the present invention comprises a Plasma Display Panel (PDP) including scan electrodes and sustain electrodes, a driver that supplies a pre-reset waveform to the scan electrodes or the sustain electrodes prior to a reset period of one or more sub-fields, and a controller that controls a period between a last sustain pulse, which is supplied to the scan electrodes or the sustain electrodes during a sustain period of a (n?1)th sub-field (where n is a positive integer), and an initialization signal, which is applied to the scan electrodes during a reset period of an nth sub-field, depending on a temperature of the PDP or an ambient temperature of the PDP.

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. Accordingly, the initial screen is stably driven, and a voltage width is increased without additional installation of elements or an increase of a withstanding voltage switches.

Abstract: A driving circuit of a plasma display panel is provided in which a display cell including a first electrode and a second electrode is selected to light up, for applying a first voltage Vs1 to the first electrode and a second voltage Vs2 to the second electrode adjacent to the first electrode to cause a sustain discharge between the first and second electrodes. The driving circuit generates a sustain discharge voltage such that, during the sustain discharge between the first and second electrodes, an applied voltage Vc to a third electrode adjacent to the first electrode opposite to the second electrode falls within a range Vs2?Vc<Vs1, and, in this case, when a display cell including the third electrode is selected to light up, the polarity of a wall charge formed on the third electrode becomes positive.

Abstract: The present invention relates to a plasma display apparatus, and more particularly, to a plasma display apparatus and driving method thereof, in which scan electrodes are scanned according to one of a plurality of scan types and a last sustain pulse of sustain pulses applied to scan electrodes or sustain electrodes is controlled.

Abstract: A plasma display apparatus and a driving method of a plasma display panel which can improve a gradation expressing ability at low luminance. A magnesium oxide layer containing a magnesium oxide crystal which is excited by irradiation of an electron beam and performs a cathode luminescence light emission having a peak in a wavelength range of 200 to 300 nanometers is provided in each of display cells formed on the plasma display panel. When driving for a plurality of subfields having different luminance weights is performed, a sustaining discharge is caused only once in the subfield having the minimum luminance weight.

Abstract: A plasma display device includes a scan driver adapted to apply reset, scan and sustain signals to scan electrodes, a sustain driver adapted to apply a sustain signal to sustain electrodes, and a display panel including discharge cells and discharge spaces, wherein the discharge cells are partitioned by horizontal and vertical barrier ribs on the display panel, on adjacent ones of the discharge cells, corresponding ones of the scan and sustain electrodes are alternatively arranged in a scan-sustain-sustain-scan electrode or a sustain-scan-scan-sustain electrode manner, the discharge spaces are between the horizontal barrier ribs of two adjacent rows of the discharge cells, and adjacent ones of the scan electrodes are electrically connected in parallel and spaced apart from each other in a region above the respective discharge space.

Abstract: A Plasma Display Panel (PDP) driven by a voltage of a driving waveform causing a stable discharge, by which electrodes are disposed to surround sides of a discharge cell to efficiently utilize discharge space, thereby improving light-emitting efficiency, and a voltage of a falling ramp type pulse waveform is supplied to an electrode to which a reset pulse is supplied during an initial reset stage, thereby improving its ability to control a wall voltage which is accumulated around each of the electrodes and is disposed on sides of the discharge cell.

Abstract: The present invention relates to a plasma display apparatus and method for driving the same. According to the present invention, the plasma display apparatus includes a plasma display panel having a first electrode and a second electrode, and a third electrode which is crossed with the first electrode and the second electrode, a scan driving unit for applying a sustain pulse, which rises from a first bias voltage of the negative polarity up to a sustain voltage, to the first electrode, and a sustain driving unit for applying a sustain pulse, which rises from a second bias voltage of the negative polarity up to a sustain voltage, to the second electrode in an alternate manner with the sustain pulse applied by the scan driving unit.

Abstract: A plasma display panel includes scan electrode lines, sustain electrode lines and data electrode lines formed within a display area. A common electrode line is formed along a side of the device at a non-display area and is commonly connected to the sustain electrode lines. A first pad portion is formed at a non-display area on a side of the device, and wires carrying scan signals are connected to the scan electrode lines at the first pad portion. A second pad portion is also formed at a non-display area on either a side edge, an upper edge or a bottom edge of the device, and a conductive path carries a sustain signal to the common line through the second pad portion.

Abstract: A driving method of a plasma display panel in which scan electrode lines and sustain electrode lines are parallel to each other and address electrode lines are spaced from and intersect the scan electrode lines and the sustain electrode lines, includes temporally dividing a unit frame into a plurality of subfields, generating a driving signal having a reset period, an address period, and a sustain period for each subfield, detecting an average signal level for the unit frame, alternately applying a first sustain pulse which reaches a first voltage with a rising slope and a second sustain pulse which reaches a ground voltage with a falling slope to the scan electrode lines and the sustain electrode lines, and controlling a timing of alternately applying in accordance with the average signal level for the unit frame.

Abstract: The simultaneous addressing and sustaining of an AC plasma display panel comprised of a multiplicity of Plasma-shells with the display divided into a plurality of Plasma-shell sections S1, S2, Sn. The Plasma-shells in at least one section of the panel are addressed while the Plasma-shells in at least one other section of the panel are simultaneously sustained. A reset voltage is simultaneously applied to all of the Plasma-shells in each section before the addressing of Plasma-shells in one section and the simultaneous sustaining of Plasma-shells in another section. Plasma-shell includes Plasma-sphere, Plasma-disc, and Plasma-dome.

Abstract: In a plasma display device, the application of at least one address signal to a cell receiving a scan signal is offset from the application of the scan signal. Such offset improves picture quality and/or reduces noise.

Abstract: An apparatus and method for driving a plasma display panel and includes two ramp switches. The two ramp switches are used to apply a two-step falling ramp waveform to a Y electrode of the plasma display panel in a reset period, thereby lowering a withstand voltage of a switch which is formed on a main path to block the flow of current when the falling ramp waveform is applied.

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: A driving method of a surface discharge plasma display panel includes a resetting step, an addressing step and a sustained discharging step. In the resetting step, a first voltage is applied between the scan electrodes and the address electrodes to accumulate wall charges in the respective pixel by a facing discharge, and the wall-charges accumulated by the facing discharge are removed. In the addressing step, a second voltage is applied between a corresponding scan electrodes and selected address electrodes so that a facing discharge occurs, to form wall-charges in the selected pixels. In the sustained discharging step, a third alternating-current voltage is applied between the scan electrodes and the common electrodes so that a surface discharge occurs in the selected pixels.