Abstract: A display panel driving apparatus capable of displaying images of good quality with a limited dither pattern. Each of pixel cells arranged on each display line in a plurality of adjacent display lines is forced to emit light at a different luminance level based on a weighting coefficient assigned to each of the display lines, wherein a weighting coefficient is assigned to each of the display lines such that an offset of luminance difference between pixel cells arranged on each of display lines adjacent to each other is held within a predetermined range across all the adjacent display lines in the display panel.

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: It is an object of the present invention to provide a display panel driver with which power consumption can be reduced. The display panel driver includes a pixel data pulse generation circuit which generates pixel data pulses by connecting the column electrodes and a power source line in accordance with the pixel data to apply the pixel data pulses to the column electrodes, and a resonance pulse power circuit which generates a resonance pulse power source voltage to apply the resonance pulse power source voltage to the power source line, the resonance pulse power circuit changing the resonance amplitude of the resonance pulse power source voltage while keeping a maximum voltage of the resonance pulse power source voltage in accordance with a pattern of a pulse sequence of the pixel data pulses.

Abstract: A drive apparatus for applying first and second drive pulses to row electrodes to drive a display panel having the row electrodes, column electrodes arranged to intersect the row electrodes, and capacitive light-emitting elements each disposed at each point of intersection of the row electrodes and the column electrodes. The drive apparatus includes a clamping circuit and a masking circuit which are formed in a module.

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 PDP driving apparatus having a resonance driver of a PDP electrode for shortening a time required to display an image since the power-up. A power collecting capacitor included in each electrode resonance driver is charged rapidly to a predetermined potential upon power-up of the PDP driving apparatus by allowing each electrode resonance driver to drive electrodes by means of excitation. Also, while the power collecting capacitor included in the row electrode pair driver is charged, charge driving pulses in-phase and of the same polarity are applied respectively to corresponding two electrodes to drive these electrodes by means of excitation.

Abstract: A panel drive device is provided with: a shift register for sequentially storing address data according to second clock pulses; a latch circuit for latching the address data stored in the shift register; and a drive circuit for driving a display panel based on the address data output from the latch circuit. Supply of the second clock pulses to the shift register is interrupted after a regular timing for causing the latch circuit to latch predetermined address data stored in the shift register.

Abstract: A driver device for a capacitive light emitting element includes a semiconductor integrated device and an electrical charge recovery circuit. The semiconductor integrated device includes a plurality of output buffers that supply a drive data-dependent voltage to each of a plurality of capacitive light emitting elements. The semiconductor integrated device also includes a plurality of switching elements that supply a high voltage to each of the output buffers. An external terminal of the semiconductor integrated device is commonly connected to respective nodes between the switching elements and output buffers. The electrical charge recovery circuit recovers electrical charge that has accumulated in the capacitive light emitting elements. The electrical charge recovery circuit is connected to the external terminal of the semiconductor integrated device.

Abstract: A device for driving capacitive light emitting elements includes a plurality of electrical charge recovery switches that send a current corresponding with an electrical charge, which has accumulated in a capacitor, individually to a plurality of drive electrodes connected to the respective capacitive light emitting elements. The electrical charge recovery switches also supply a current corresponding with the electrical charge that has accumulated in each of the capacitive light emitting elements to the capacitor individually via each of the drive electrodes. The driver device also includes a plurality of output buffers that apply a pixel-data-dependent voltage to the drive electrodes. It is determined, for each drive electrode, whether the voltage of the drive electrode has shifted from a high voltage to a low voltage or from a low voltage to a high voltage on the basis of the pixel data.

Abstract: The present invention provides a plasma display driving method and driving device which can improve image display contrast. The method comprises an address step for shifting the discharge cells into an emission enable state when the discharge cells corresponding to each pixel of the plasma display panel are in an emission disable state, by selectively causing the discharge cells to perform a selective writing discharge in accordance with the pixel data of each pixel, based on a video signal, thus generating wall charges in the discharge cells; and, on the other hand, when the discharge cells are in an emission enable state, shifting the discharge cells into an emission disable state by selectively causing the discharge cells to perform a selective erasing discharge in accordance with the pixel data, thus erasing the wall charges in the discharge cells; and an emission sustain step for causing only those discharge cells which are in the emission enable state to emit light repeatedly.

Abstract: An apparatus for driving capacitive light emitting diodes which can be reduced in size. For supplying a capacitive light emitting diode with a driving pulse which varies the voltage with a predetermined amplitude through a driving line, the driving apparatus comprises a resonance current path including a capacitor, a first switching element for supplying the driving line with a current in accordance with charges accumulated on the capacitor when it is on, and a second switching element for grounding one electrode of the capacitor when it is on, thereby supplying the other electrode of the capacitor with a current in accordance with charges accumulated in the capacitive light emitting element through the driving line.

Abstract: A display panel driving apparatus capable of displaying images of good quality with a limited dither pattern. Each of pixel cells arranged on each display line in a plurality of adjacent display lines is forced to emit light at a different luminance level based on a weighting coefficient assigned to each of the display lines, wherein a weighting coefficient is assigned to each of the display lines such that an offset of luminance difference between pixel cells arranged on each of display lines adjacent to each other is held within a predetermined range across all the adjacent display lines in the display panel.

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: A display panel driving method that can reduce power consumption in a sustain step is provided. Output terminals of a column electrode drive circuit connected to column electrodes of a display panel sustain a state of high impedance during the period of the sustain step. An X sustain signal is set as a bipolar pulse signal, in each half-cycle of which the commencement time of the rise of the negative pulse is set longer than the completion time of the rise of the positive pulse, and the commencement time of the fall of the positive pulse is set longer the completion time of fall of the negative pulse. Furthermore, a Y sustain signal is displaced by a half cycle from the phase of the X sustain signal. It should be noted that the polarity of these pulses may be reversed.

Abstract: A drive apparatus for applying first and second drive pulses to row electrodes to drive a display panel having the row electrodes, column electrodes arranged to intersect the row electrodes, and capacitive light-emitting elements each disposed at each point of intersection of the row electrodes and the column electrodes. The drive apparatus includes a clamping circuit and a masking circuit which are formed in a module.

Abstract: It is an object of the present invention to provide a display panel driver with which power consumption can be reduced. The display panel driver includes a pixel data pulse generation circuit which generates pixel data pulses by connecting the column electrodes and a power source line in accordance with the pixel data to apply the pixel data pulses to the column electrodes, and a resonance pulse power circuit which generates a resonance pulse power source voltage to apply the resonance pulse power source voltage to the power source line, the resonance pulse power circuit changing the resonance amplitude of the resonance pulse power source voltage while keeping a maximum voltage of the resonance pulse power source voltage in accordance with a pattern of a pulse sequence of the pixel data pulses.

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: The present invention provides a plasma display driving method and driving device which can improve image display contrast. The method comprises an address step for shifting the discharge cells into an emission enable state when the discharge cells corresponding to each pixel of the plasma display panel are in an emission disable state, by selectively causing the discharge cells to perform a selective writing discharge in accordance with the pixel data of each pixel, based on a video signal, thus generating wall charges in the discharge cells; and, on the other hand, when the discharge cells are in an emission enable state, shifting the discharge cells into an emission disable state by selectively causing the discharge cells to perform a selective erasing discharge in accordance with the pixel data, thus erasing the wall charges in the discharge cells; and an emission sustain step for causing only those discharge cells which are in the emission enable state to emit light repeatedly.

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 display panel drive apparatus can reduce power consumption upon writing pixel data. The display panel drive apparatus reduces a resonance amplitude of the resonance pulse voltage source carrying the generation of the pixel data pulse while keeping maximum potential level thereof, when at least two of the supplied pixel data neighboring each other in column direction assume the same logic value as each other.