Abstract: A drive apparatus for driving a display panel having a plurality of row electrode groups each of which includes a plurality of row electrodes, and a plurality of column electrodes arrayed in the direction intersecting with each row electrode of the plurality of row electrode groups to form display cells at the intersection points. The drive apparatus comprises a controller for generating a control signal for each of the row electrode groups, and a row electrode drive circuit for generating a drive pulse in response to the control signal and supplying the pulse to each row electrode of each of the row electrode groups. The control signal is delayed when being supplied to the drive circuit for each of the row electrode groups.

Abstract: A display panel driving circuit for driving a display panel, in which the electric power consumption at the time of the switching can be reduced. The display panel driving apparatus allows the use of a switching device of a low withstanding voltage. A transition voltage generating circuit for shifting a voltage of a DC power source of the driving apparatus is provided. A resonance relay circuit is provided for generating a pulse having a leading edge which rises gradually and a trailing edge which decreases gradually based on the transition voltage and supplying it as a drive pulse to the display panel. A plurality of resonance circuits for driving and exciting capacitive devices of the display panel are provided in a range of different driving potentials. The drive pulse having the leading edge which rises gradually and the trailing edge which decreases gradually is generated by switching each of the resonance circuits by the switching device to make them operative sequentially.

Abstract: A driving apparatus for a display panel generates a cell data comprising a bit series per each column electrode of a display panel. The cell data indicates light emitting or non-light emitting in each cell on a column electrode in accordance with a picture signal. The apparatus generates a resonating amplitude signal having a specified minimum power source voltage by a function of resonance. The apparatus generates power pulses in sequence having a period corresponding to one bit of the cell data by giving a specified maximum electrical potential during a rising period and a falling period of the resonating amplitude signal. The apparatus provided in each column electrode determines a logic level of the bit series of the cell data in order of the bit series, and supplies the power pulse to a corresponding column electrode as a driving pulse when the bit indicates the logic level of light emitting.

Abstract: Fields define a picture signal, and each field is divided into a plurality of sub fields. A plasma display panel includes discharge cells formed at crossing portions of row and column electrodes. A sub field group includes a head sub field and at least one subsequent sub field. Each sub field of the sub field group includes a selected writing address stage for selectively discharging a discharge cell in question so as to set the discharge cell into a lighting mode in accordance with the picture signal. At least one sub field subsequent to the sub field group includes a light emission maintaining stage for repeatedly maintaining discharge of the discharge cell in only the lighting mode for a number of times in accordance with weighting of the plurality of sub fields.

Abstract: A method of driving a plasma display panel minimizes occurrence of complementary color ghost images (afterimage). Reset pulses are applied to a plurality of row electrode pairs to trigger a reset discharge in all discharge cells. The reset pulses include a first reset pulse that is applied to one of the row electrodes of each row electrode pair and a second reset pulse that is applied to the other row electrode at the same time that the first reset pulse is applied and has a polarity opposite that of the first reset pulse. The first and second reset pulses have different voltage levels.

Abstract: A display panel driving method that is capable of displaying images with false contours suppressed and without the occurrence of flicker, even when the vertical sync frequency of the input image signal is low. When an image signal with a low mean brightness level is input, or when an image signal having a comparatively high vertical sync frequency is input, light emission elements comprised by pixels are caused to emit light in a number of continuous subfields corresponding to the brightness level expressed by the input image signal in one field. If an image signal is input in which the mean brightness level is high, and in addition the vertical sync frequency is comparatively low, light emission elements are caused to emit light in a number of continuous subfields corresponding to the brightness level expresses by the image signal, in each of the first half and the second half of a field.

Abstract: A display controller is disclosed which, when controlling the luminance of an image to be displayed, by controlling the number of sustain pulses forming each of display signals used for a preset display period, stores in a characteristic information storage section a plurality of different characteristic information each for changing the number of sustain pulses in function of the average brightness level of each of video signals corresponding to the image to be displayed, selects one of the stored characteristic information using a selection section, detects the average brightness level of each of the video signals Sin externally supplied for displaying the image, using an APL detection section, sets the number of sustain pulses to be used to display the image by referring to the selected one of the characteristic information based on the detected average brightness level, and applies the set numbers of sustain pulses to a PDP to display the image.

Abstract: A plasma display apparatus which can surely prevent an overcurrent flowing in a driver for driving electrodes of a plasma display panel. A power source is shut off when an internal short-circuit state of a column electrode driver is detected based on a current or an electric potential on a power line in a column electrode driver detected during a light emission sustaining period.

Abstract: A display device which can perform excellent image display with reduced dither noise. Values of dither coefficients that are allotted to respective pixel positions in a pixel group are altered between when the brightness level of an image displayed by the pixel data is lower than a prescribed brightness and when the brightness level of the image falls within a prescribed intermediate brightness range.

Abstract: In the reset step for initializing an amount of wall charge in each of the plurality of discharge cells that define each of the picture elements in a plasma display panel, the number of reset discharges that are caused to occur in the discharge cells that handle the emission of light of at least one color within the picture element is greater than the number of reset discharges that are caused to occur in the discharge cells that handle the emission of light of the other color(s). The plasma display panel drive method provides a stable electrical discharge effect while increasing contrast.

Abstract: A method of driving a display panel. Weights of all subfields and combinations of light emitting subfields for respective gradation levels are determined to reduce the number of subfields of which light emission states change between two adjacent gradation levels. A plurality of field display sequences are provided such that the combinations of light emitting subfields at at least one gradation level are different from each other between the field display sequences. Fields are sequentially displayed by changing the field display sequences every time a predetermined number of fields of an image signal are displayed.

Abstract: The present invention intends to provide a display position control apparatus which can prevent a position control signal to control a display position of an image from being unstable and can display the image with high image quality. A delay signal having a phase difference in a match state with reference to a vertical sync signal is generated. Whether a phase relation between the vertical sync signal and a horizontal sync signal is in a mismatch state is detected. When it is detected that the phase relation is in the mismatch state, a display position control signal is generated on the basis of the vertical sync signal and the delay signal. When it is not detected that the phase relation is in the mismatch state, the display position control signal is generated on the basis of the vertical sync signal and the horizontal sync signal.

Abstract: A display electrode and a dielectric layer are formed on the convex side of a front glass substrate that is convexly curved in profile, whereas address electrodes, a dielectric layer, partition walls and phosphor layers are formed on the convex side of a back glass substrate 15 that convexly curved in profile. Further, a sealing layer containing granular substances in a sealing material is formed in the peripheral portion of the back glass substrate. A front panel and a back panel are stacked so that the panel component parts of the front panel are set opposite to the panel component parts of the back panel. Then the peripheral portions of the panels are pressed against each other into a flat substrate plate as shown by arrows and heated up.

Abstract: A plasma display panel includes: a plurality of row electrode pairs (X, Y) provided on a front glass substrate (10); a protective layer (12) on the front glass substrate (10); and a plurality of column electrodes (D) provided in a back substrate (13) at intersections with the row electrode pairs (X, Y) to form discharge cells (C) in the discharge space (S). An ultraviolet region light emissive layer (17) having persistence characteristics allowing continuous emission of ultraviolet light as a result of excitation by ultraviolet rays having 0.1 msec or more of a wavelength is provided at a site facing each discharge cell (C) between the front glass substrate (10) and the back glass substrate (13).

Abstract: A plasma display panel driving method and a plasma display apparatus which can reduce power consumption. A selective discharge is generated at least once for selectively setting each of discharge cells of a plasma display panel either to a lit discharge cell state or to an unlit discharge cell state in accordance with a video signal. In this case, the number of times the selective discharge is generated is changed in accordance with the power consumption associated with the selective discharge.

Abstract: The present invention provides a plasma display driving device capable of enhancing contrast by adjusting in accordance with the ambient illuminance of a plasma display panel the level change rate at the leading edge portion of a resetting pulse for causing the occurrence of a resetting discharge, which initializes all the discharge cells of the plasma display panel. The present invention also provides a plasma display panel driving method for enabling power consumption to be held in check by changing the number of sustaining pulses per unit time to be applied to each discharge cell in an emission sustaining step in accordance with the ambient illuminance of the plasma display panel, and, in addition, by adjusting the pulse width of at the least one of the above-mentioned sustaining pulse and scanning pulse for pixel data writing.

Abstract: The present invention provides a plasma display driving device capable of enhancing contrast by adjusting in accordance with the ambient illuminance of a plasma display panel the level change rate at the leading edge portion of a resetting pulse for causing the occurrence of a resetting discharge, which initializes all the discharge cells of the plasma display panel. The present invention also provides a plasma display panel driving method for enabling power consumption to be held in check by changing the number of sustaining pulses per unit time to be applied to each discharge cell in an emission sustaining step in accordance with the ambient illuminance of the plasma display panel, and, in addition, by adjusting the pulse width of at the least one of the above-mentioned sustaining pulse and scanning pulse for pixel data writing.

Abstract: A driving method of a plasma display panel for achieving a high-quality image display by preventing an erroneous discharge light emission between row electrodes during a light emission sustaining step. In each subfield, a pixel data writing step and the light emission sustaining step are performed, and an address pulse, having the same polarity as the polarity of a sustain pulse first applied during the light emission sustaining step, is applied to the respective column electrodes concurrently with the first-applied sustain pulse.

Abstract: The present invention provides a plasma display driving device capable of enhancing contrast by adjusting in accordance with the ambient illuminance of a plasma display panel the level change rate at the leading edge portion of a resetting pulse for causing the occurrence of a resetting discharge, which initializes all the discharge cells of the plasma display panel. The present invention also provides a plasma display panel driving method for enabling power consumption to be held in check by changing the number of sustaining pulses per unit time to be applied to each discharge cell in an emission sustaining step in accordance with the ambient illuminance of the plasma display panel, and, in addition, by adjusting the pulse width of at the least one of the above-mentioned sustaining pulse and scanning pulse for pixel data writing.

Abstract: A drive circuit of plasma display panel (PDP) unit including at least a pair of electrodes and discharge cells connected thereto, further comprises a first path having a first switch and a first coil for applying voltage to the discharge cells; a second path having a second switch and a second coil for expelling the voltage applied to the discharge cells; and electric charge accumulating devices connected to the first path and the second path, wherein the inductance value of the second coil is larger than the inductance value of the first coil.