Pioneer Corporation

Pioneer Display Products Corporation

Hideo Naganuma

Hisashi Kubota

A drive control apparatus for a display panel formed by arranging a plurality of pixels having a plurality of cells emitting lights of different colors comprising: an obtaining device which obtains an image signal effecting a display on the display panel, and a drive device for generating a drive signal for driving the display panel based on the obtained image signal, wherein the drive device generates the drive signal performing a reverse of a light emission mode which includes at least one of a reverse between a light emission state and a light stopping state for each of the cells and a reverse of gradation in the light emission state of each of the cells with respect to each of the pixels at a predetermined time.

Drive control apparatus for display panel

This invention provides a drive method and an drive apparatus for a display panel that continuously maintain good image quality when the display panel is used for a long period of time. Based on the image data that are output from the A/D converter, an APL (Average Picture Level) calculation unit calculates the average brightness level for one field, and then a total light emission calculation unit uses the APL calculates the total number of times light is emitted. Based on the total light emissions or the total usage time, the control unit controls the voltage of drive pulses for the X-sustain driver and Y-sustain driver, or the timing at which they are applied, in order to compensate for changes over time of the PDP.

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Fukuroi, Japan

Hideo Naganuma