Method for driving plasma display panel
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsJun Someya, Yoshiki Ono, Yoshiaki Okuno, Takashi Hashimoto
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Abstract
With a plasma display panel, an object of the present invention is to suppress luminance in black display without deteriorating picture quality and to suppress pseudo contouring of moving picture, while suppressing cost of the plasma display panel. According to a plasma display panel driving method of the present invention, a plurality of discharge sustain periods for displaying equal luminance level are successively defined in a given period in one field to reduce the amount of shift of the center of luminance, and address periods for selecting arbitrary display cells on the screen are comprised of two kinds of address periods: a write address period and an erase address period.
Claims23
A method for driving a plasma display panel for image display comprising:
- establishing an address period associated with a corresponding subfield of a field to activate a cell of the plasma display panel on the basis of a specified address and a sustained discharge period with discharge produced for a specified number of times;
- assigning a light-emifting subfield group comprising two or more subfields, at least two of said subfields having sustained discharge periods having sustain pulses of substantially equal aggregate duration;
- and
- emitting light having an intensity level based on an aggregate duration of sustain pulses for the subfields forming said light-emitting subfield group.
A method for driving a plasma display panel for image display comprising:
- assigning an address period associated with a corresponding subfield of a field on the basis of a specified address and a sustained discharge period;
- assigning a light-emitting subfield group comprising first to nth subfields having sustained discharge periods having sustain pulses of substantially eaual aggregate duration, wherein n is greater or equal to two;
- establishing a write address period for selectively accumulating wall charge on a dielectric covering an electrode in a write-addressed display cell, during a write address period of said first subfield;
- continuously emitting light for each following subfield within the subfield group until canceled;
- and
- establishing an erase address period for selectively erasing the wall charge accumulated on said dielectric in an erase-addressed non-display cell during an erase address period set in a subfield following said nth subfield, the erasing canceling the continuous emission of light during the subfield group.
A method for driving a plasma display panel comprising:
- establishing discharge periods associated with corresponding subfields of a field;
- assigning a subfield group including a plurality of subfields within said subfield group, each of said subfields developing at least one sustain pulse having a sustained discharge period, at least two of said subfields having sustain pulses of substantially equal aggregate duration;
- activating the identical discharge periods to be centered about a temporal center of the subfield group;
- and
- emitting light having an intensity level based on an aggregate discharge period for all of the subfields forming the assigned subfield group.
Dependencies are inferred from the claim text.