| 摘要 |
PROBLEM TO BE SOLVED: To provide a plasma display device superior in gradation characteristic over the range from low luminance to high luminance and fine in the adjustment step of contrast. SOLUTION: When a time division driving method is selected, a contrast adjustment is conducted by the number of sustaining pulses, the number of sustaining pulses in the subfield(SF) corresponding to the same bit of digital video signals is set to the different value. For example, the sustaining pulse number of a first SF of a contract adjustment level 2 is set to 1.5 and the sustaining pulse numbers of a first SF of first and second fields 100 and 200 are set to/and 2. Moreover, the gradation display of the fields 100 and 200 are alternatively conducted for every field. |
