Patent ID: 6677921
Filing Date: 2004-01-13
Classification: G09G

Abstract:
A method of driving a plasma display panel having front and rear substrates opposite each other, X and Y electrode lines disposed on the front substrate parallel to each other along a first direction between the front and rear substrates, and address electrode lines disposed on the rear substrate in a second direction orthogonal to the X and Y electrode lines to define corresponding display cells at interconnections across a discharge space, wherein the X electrode lines are divided into X groups and the Y electrode lines are divided into Y groups such that no two adjacent pairs of adjacent X and Y electrode lines belong to the same pair of X and Y groups, and the X and Y electrode lines of the respective X and Y groups are commonly connected to be driven, and at least first and second subfields are driven in an overlapping manner to display gray scales during a unit display period, the method comprising:a scan operation of applying a Y scan pulse of a first polarity to Y electrode lines of a first pair of the X and Y groups to which a first pair of the X and Y electrode lines of the first subfield belong, and applying an X scan pulse of a second polarity opposite to the first polarity to the X electrode lines of the first pair of X and Y groups to form wall charges in the discharge space around the first pair of X and Y electrode lines; an address operation of applying a data signal corresponding to the first pair of X and Y electrode lines of the first subfield to the address electrode lines to erase the wall charges formed at unselected discharge cells; a display operation of alternately applying display pulses to the X and Y electrode lines of the first pair of X and Y groups to cause a display discharge at selected discharge cells where the wall charges are formed; a second driving operation of performing said scan, address, and display operations for a second pair of X and Y groups to which a second pair of the X and Y electrode lines of a second subfield belong, the address operation for the second pair of the X and Y electrode lines of the second subfield being performed at different timing points than said address operation for the first pair of X and Y electrode lines of the first subfield; and a repetition operation of repeatedly performing said scan, address, display, and second driving operations for pairs of the X and Y groups to which other pairs of the X and Y electrode lines of the first and second subfields belong.