Panel driving method and apparatus for representing gradation

A panel driving method for representing a gradation for each cell, wherein pixels of a panel are classified into a plurality of groups, one frame period is divided with time into n subfields, an address period and a sustain period sequentially occur during each of the subfields, and n gradation weights W1 through Wn (where n is an integer equal to or greater than 2) are allocated to the sustain periods in the n subfields, respectively, the panel driving method comprising:

• assigning, during one subfield, any one of the n weights to each of the groups when at least two of the n weights are different;
• assigning, during one frame, the n weights to the n subfields in each group, respectively;
• keeping the pixels of the other groups idle while the pixels of one group are undergoing an address period during a subfield;
• subjecting the pixels of groups that have already been addressed to the sustain period, while the pixels of one group are undergoing a sustain period;
• and
• determining a gradation for each pixel according to gradation weights allocated to the addressed subfields by selectively performing an address period with respect to individual groups.

A panel driving method in which pixels of a panel are classified into a plurality of groups, and one frame period is divided with time into n subfields, the panel driving method comprising:

• allocating during one subfield, different weights to the durality of groups;
• allocating, during one frame, an identical total weight to each of the groups;
• keeping the pixels of the other groups while the pixels of one group are undergoing an address period during a subfield;
• subjecting the pixels of groups that have already been addressed to the sustain period, while the pixels of one group are undergoing a sustain period;
• and
• determine a gradation for each pixel is according to gradation weights allocated to the addressed subfields by selectively performing an address period with respect to individual groups.

A panel driving method in which pixels of a panel are classified into a plurality of groups, and one frame period is divided with time into n subfields, the panel driving method comprising:

• allocating during each subfield, different lengths of sustain periods or different numbers of sustain pulses to the group;
• allocating, during one frame, an identical total length of a sustain period or an identical total number of sustain pulses to the groups;
• keeping the pixels of the other groups idle, while the pixels of one group are undergoing an address period during a subfield;
• subjecting the pixels of groups that have already been addressed also undergo the sustain period, while the pixels of one group are undergoing a sustain period;
• and
• a gradation for each pixel is determined according to gradation weights allocated to the addressed subfields by selectively performing an address period with respect to individual groups.