PLASMA DISPLAY PANEL DRIVE CIRCUIT AND PLASMA DISPLAY DEVICE

摘要

It is possible to realize a plasma display panel drive circuit and a plasma display device for high image quality. A PDP drive circuit includes a recovery capacitor connected to a boosting circuit having at least an inductor, a switch element, and a diode. The PDP drive circuit has a function to lower voltage of the recovery capacitor by regenerating a surplus voltage of the recovery capacitor to a sustaining voltage power source. By lowering the voltage of the recovery capacitor when the lighting ratio is low, it is possible to lower the luminance even at the small load when the lighting ratio is low. Accordingly, it is possible to realize a video display of high gradation, a PDP drive circuit and a plasma display device enabling a high image quality. Moreover, in a data electrode drive circuit of a delayed write timing, the write operation is stabilized by increasing the voltage of the recovery capacitor, thereby realizing a PDP drive circuit and a plasma display device of a high image quality.