Patent application number | Description | Published |
20090040146 | PLASMA DISPLAY APPARATUS AND PLASMA DISPLAY PANEL DRIVING METHOD - A disclosed plasma display apparatus and a plasma display panel driving method provide improved luminance while preventing decrease in resolution. In the plasma display apparatus, which is adapted to the display of an interlace signal, the maximum number of sustain pulses associated with the emission of light that can be made in one field is calculated, based on the vertical synchronization signal frequency of the input signal. A display load factor of the input signal in the one field is calculated and, based on the calculated display load factor, a target number of sustain pulses in the one field is determined. Based on a relationship between the target number of sustain pulses and the maximum number of sustain pulses, an emission luminance ratio of a sub-display line to a main-display line in the one field is determined. | 02-12-2009 |
20090058765 | Plasma Display Device - Between a sustain circuit outputting a sustain pulse and a scan circuit (even) driving a Y electrode of an even display line, there is provided a first switch capable of making the Y electrode of the even display line be in a high impedance state, and between the sustain circuit and a scan circuit (odd) driving a Y electrode of an odd display line, there is provided a second switch capable of making the Y electrode of the odd display line be in the high impedance state. By first and second switches, the Y electrode of the even display line and the Y electrode of the odd display line can be independently controlled to be in the high impedance states, whereby discharge of the even display line can be restrained in a sustain period of an odd frame, while a discharge of the odd display line can be restrained in a sustain period of an even frame, thereby realizing an interlace drive without complicating a circuit configuration. | 03-05-2009 |
20090135094 | Plasma Display Device and Method of Driving the Same - A plasma display device capable of realizing an interlace drive in one line display and an interlace drive in two lines display by switching thereof without deteriorating display quality, is provided. The interlace drive in one line display and the interlace drive in two lines display are realized such that: the interlace drive in one line display is performed by applying a sustain pulse for even display lines or odd display lines within a plasma display panel in each frame; and the interlace drive in two lines display is performed by applying the sustain pulse while setting the even display lines and the odd display lines adjacent above and below as one set and writing an identical data thereto. In addition, the all-cell reset is performed once per unit time at the interlace drive in two lines display, and an increase of background luminance is prevented by suppressing the increase in the number of times of the all-cell reset in the two lines display. | 05-28-2009 |
20090201226 | DRIVING METHOD FOR PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE - A driving method for a plasma display panel is disclosed in which sustain pulses are alternately applied to a pair of display electrodes of plural discharge cells provided in the plasma display panel to generate a sustain discharge, thereby causing an image to be displayed on the plasma display panel. The sustain pulses include a two-crests discharge voltage waveform having two maximum values in which discharges are generated twice in a half cycle. The driving method includes consecutively applying the two-crests discharge voltage waveforms to the pair of display electrodes; and making a time until the second one of the maximum values of the subsequently applied two-crests discharge voltage waveform is clamped longer than a time until the second one of the maximum values of the initially applied two-crests discharge voltage waveform is clamped. | 08-13-2009 |
Patent application number | Description | Published |
20090066610 | Plasma Display Apparatus - Provided is a plasma display apparatus capable of reducing power consumption by effectively using charges charged in a plasma display panel and achieving a high luminance by a reduction in reactive power. This plasma display apparatus includes: a plasma display panel in which X electrodes, Y electrodes, and Z electrodes are disposed on a front substrate and address electrodes are disposed on a rear substrate; and an X drive circuit, a Y drive circuit, a Z drive circuit and an address drive circuit for performing discharge light emission by applying a Z pulse between the Z electrode and the X electrode or between the Z electrode and the Y electrode and applying an X (Y) pulse between the X electrode and the Y electrode. The Z drive circuit includes a coil and switches using an LC resonance operation with the capacitance of the plasma display panel, and the Z pulse having a narrow pulse width can be generated by generating a Z pulse in the Z drive circuit. | 03-12-2009 |
20090153543 | Driving Method of Plasma Display Panel and Plasma Display Device - In a technique of a PDP having a four-electrode structure of (X, Y, Z, and A), the technique capable of preventing a delay of a discharge timing due to a voltage applied to the Z electrode is provided. In the four-electrode product structure of (X, Y, Z, and A) and a PDP in which rows are formed at both sides of a Y electrode, for a voltage waveform applied to each electrode (for example, X | 06-18-2009 |
20090160739 | Plasma Display panel and plasma display - A technology for the four-electrode type PDP for preventing the lowering of luminance depending on the display load ratio due to the voltage drop at electrode by mitigating concentration of discharge timing. On a front substrate of a PDP ( | 06-25-2009 |
Patent application number | Description | Published |
20080198100 | Method for driving plasma display panel - A method for driving a plasma display panel is provided in which wasteful power consumption is reduced and light emission efficiency is improved when the number of cells to be lighted is relatively small. The method includes classifying a display ratio into plural group ranges, selecting a suitable display pulse waveform for each group range, detecting the display ratio of an object to be displayed in a real display, and plural types of display pulses having different waveforms are used differently in accordance with the result of the detection. The display ratio means a ratio of the number of cells to be lighted to the number of cells of the screen. | 08-21-2008 |
20090040211 | Method for driving plasma display panel - A method for driving an AC type plasma display panel includes the steps of performing initialization at least once for each frame so as to clear binary setting of wall charge quantity in a screen by discharge except for micro discharge in which electrodes covered with a plurality of fluorescent materials become cathodes, and performing special initialization at frequency of once for M frames, where M=two or more, so as to erase unnecessary wall charge in the screen by discharge in which electrodes become cathodes and that is stronger than the discharge in the initialization. | 02-12-2009 |
20090046086 | Method for driving plasma display panel - A method for driving an AC type plasma display panel includes the steps of performing initialization at least once for each frame so as to clear binary setting of wall charge quantity in a screen by discharge except for micro discharge in which electrodes covered with a plurality of fluorescent materials become cathodes, and performing special initialization at frequency of once for M frames, where M=two or more, so as to erase unnecessary wall charge in the screen by discharge in which electrodes become cathodes and that is stronger than the discharge in the initialization. | 02-19-2009 |
20110267378 | Method for driving plasma display panel - A method for driving a plasma display panel is provided in which wasteful power consumption is reduced and light emission efficiency is improved when the number of cells to be lighted is relatively small. The method includes classifying a display ratio into plural group ranges, selecting a suitable display pulse waveform for each group range, detecting the display ratio of an object to be displayed in a real display, and plural types of display pulses having different waveforms are used differently in accordance with the result of the detection. The display ratio means a ratio of the number of cells to be lighted to the number of cells of the screen. | 11-03-2011 |