Display device and method of driving the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHidehiko Shoji, Yutaka Yoshihama, Jumpei Hashiguchi, Hironari Taniguchi
Life of this patent
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Abstract
A sub-field lighting rate measuring unit measures a lighting rate in a final sub-field. When the measured lighting rate exceeds a threshold value, a blank signal generator maintains a blank signal at a low level in a sustain time period in a sub-field. An output control circuit brings an output control signal into a low level on the basis of the blank signal. In this case, no data pulse is applied to an address electrode, so that there is no power consumed at the time of the rise and the fall of the data pulse.
Claims10
A display device that displays each of a plurality of gray levels in a combination of respective emission or non-emission states in a plurality of sub-fields, comprising
- a plurality of first electrodes arranged in a first direction;
- a plurality of second electrodes arranged in a second direction crossing said first direction;
- a plurality of third electrodes arranged in said second direction;
- a plurality of discharge cells respectively provided at intersections of said plurality of first electrodes, said plurality of second electrodes, and said plurality of third electrodes;
- detection means for detecting information based on the number of the discharge cells that simultaneously light up out of the plurality of discharge cells in the first sub-field out of said plurality of sub-fields;
- and
- potential holding means for holding said plurality of first electrodes at a constant potential in an address time period in the second sub-field out of said plurality of sub-fields depending on the information detected by said detection means,
- said second sub-field having a lower weight than the weight of said first sub-field.
A method of driving a display device comprising a plurality of first electrodes arranged in a first direction, a plurality of second electrodes arranged in a second direction crossing said first direction, a plurality of third electrodes arranged in said second direction, and a plurality of discharge cells respectively provided at intersections of said plurality of first electrodes, said plurality of second electrodes, and said plurality of third electrodes, comprising the steps of:
- detecting information based on the number of the discharge cells that simultaneously light up out of the plurality of discharge cells in the first sub-field out of said plurality of sub-fields;
- and
- holding said plurality of first electrodes at a constant potential in an address time period in the second sub-field out of said plurality of sub-fields depending on said detected information,
- each of a plurality of gray levels being displayed in a combination of respective emission or non-emission states in said plurality of sub-fields, and
- said second sub-field having a lower weight than the weight of said first sub-field.
Dependencies are inferred from the claim text.