Patent ID: 7142174
Filing Date: 2006-11-28
Classification: G09G

Abstract:
1. A driving method of a plasma display panel for driving gradation-wise a plasma display panel having a plurality of discharge cells each arranged in matrix and bearing a role of a pixel by constituting one field of input image signal by a plurality of sub-fields, comprising: setting each of said discharge cells to one of a light emission cell state and a light non-emission state in accordance with respective pixel data of said input image signal in each of sub-fields; and causing only said discharge cell under said light emission cell state to emit light a number of light emissions allotted in accordance with weighting of said sub-field, wherein adjacent ones of said plurality of discharge cells constitute a discharge cell block and each of said adjacent ones of said plurality of discharge cells is separately driven according to said respective pixel data of said input image signal, and for at least one of said subfields the number of light emissions to be allotted respectively to said discharge cells inside said discharge cell block are rendered different, and are varied for each field, and wherein for discharge cells in the discharge cell block, weighting of said sub-fields are set to satisfy a condition: where SFa1, SFa2 . . . SFan represent weightings. in an ascending order, of said sub-fields for one discharge cell in said discharge cell block and SFb1, SFb2, . . . SFbn represent weightings, in an ascending order, of said sub-fields for another discharge cell in said discharge cell block.