Patent ID: 8319705
Filing Date: 2012-11-27
Classification: G09G

Abstract:
1. A plasma display device, comprising: a display panel having a plurality of first display electrodes, a plurality of second display electrodes, and a plurality of address electrodes crossing the first and second display electrodes; electrode drive circuitry which drives the first and second display electrodes and the address electrodes; and a drive control circuit which controls the electrode drive circuitry, wherein the drive control circuit, in subfields, performs driving by combining (i) an address drive control for selectively turning ON cells by applying an address voltage to one address electrode of the plurality while scanning at least the first display electrodes, (ii) a reset drive control having either an all cell reset drive control which performs a reset discharge of all cells to be scanned in a given subfield regardless of whether the cells are ON or OFF at a start of the reset drive control or an ON cell reset drive control which performs a reset discharge only of cells of the subfield that are ON at the start of the reset drive control, and (iii) a sustain drive control which generates a sustain discharge in cells to be turned ON, both the all cell reset drive control and the ON cell reset drive control include a first driving for applying voltages so that a potential difference between corresponding first and second display electrodes increases with time in a first polarity mode, and then a second driving for applying voltages so that the potential difference between the corresponding first and second display electrodes increases with time in a second polarity mode opposite to the first polarity mode, a beginning potential difference between the corresponding first and second display electrodes at the beginning of applying the voltages in the first driving is smaller than a potential difference between the corresponding first and second display electrodes according to sustain pulses applied in the sustain drive control, a reaching potential difference between the corresponding first and second display electrodes according to the applied voltages in the first driving is larger than the potential difference between the corresponding first and second display electrodes according to the sustain pulses, the reaching potential difference between the corresponding first and second display electrodes in the first driving of the all cell reset drive control is larger than the reaching potential difference between the corresponding first and second display electrodes in the first driving of the ON cell reset drive control, the reaching potential difference between the corresponding first and second display electrodes in the first driving of the all cell reset drive control is substantially the same in cases of the display panel being at a first temperature and at a second temperature higher than the first temperature, and the drive control circuit controls so that the reaching potential difference between the corresponding first and second display electrodes in the first driving of the ON cell reset drive control, when the display panel is at the second temperature, is larger than the reaching potential difference between the corresponding first and second display electrodes in the first driving of the ON cell reset drive control when the display panel is at the first temperature.