Display and its driving method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShigeo Kigo, Mitsuhiro Kasahara, Mitsuhiro Mori, Jumpei Hasiguchi
Life of this patent
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Abstract
A subfield lighting rate measuring unit detects a lighting rate for each subfield, and a subfield processor controls a scan driver and a sustain driver so that a recovery time of each sustain pulse, a resonance time of LC resonance and a sustain period become longer as the detected lighting rate for each subfield becomes smaller.
Claims23
A display device that displays an image by causing a plurality of discharge cells to selectively discharge, comprising:
- recovery means for recovering charges stored in said discharge cells to drive a drive pulse by using the recovered charges;
- and
- detection means for detecting a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time, wherein
- said plurality of discharge cells include a capacitive load, and
- said recovery means includes
- inductance means having at least one inductance element that has one end connected to said capacitive load, and
- resonance driving means for driving said drive pulse by LC resonance of said capacitive load and said inductance element, said display device further comprising
- control means for controlling said recovery means so as to vary a recovery time in which said drive pulse is driven by said recovery means and a resonance time of said LC resonance depending on the lighting rate detected by said detection means.
A display device that displays an image by causing a plurality of discharge cells to selectively discharge, comprising:
- recovery means for recovering charges stored in said discharge cells to drive a drive pulse by using the recovered charges;
- and
- detection means for detecting a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time, wherein
- said plurality of discharge cells include a capacitive load, and
- said recovery means includes
- inductance means having at least one inductance element that has one end connected to said capacitive load, and
- resonance driving means for driving said drive pulse by LC resonance of said capacitive load and said inductance element, said display device further comprising
- control means for controlling said recovery means so as to vary a resonance time of said LC resonance depending on the lighting rate detected by said detection means.
A method of driving a display device that displays an image by causing a plurality of discharge cells to selectively discharge, wherein
- said plurality of discharge cells include a capacitive load, and
- said display device includes inductance means having at least one inductance element that has one end connected to said capacitive load,
- said method comprising the steps of:
- recovering charges stored in said discharge cells to drive a drive pulse by LC resonance of said capacitive load and said inductance element by using the recovered charges;
- detecting a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time;
- and
- varying a recovery time in which said drive pulse is driven in said recovery step and a resonance time of said LC resonance, depending on the lighting rate detected by said detection step.
A method of driving a display device that displays an image by causing a plurality of discharge cells to selectively discharge, wherein
- said plurality of discharge cells include a capacitive load, and
- said display device includes inductance means having at least one inductance element that has one end connected to said capacitive load,
- said method comprising the steps of:
- recovering charges stored in said discharge cells to drive a drive pulse by LC resonance of said capacitive load and said inductance element by using the recovered charges;
- detecting a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time;
- and
- varying a resonance time of said LC resonance depending on the lighting rate detected by said detection step.
A display device that displays an image by causing a plurality of discharge cells to selectively discharge, comprising:
- a recovery circuit that recovers charges stored in said discharge cells to drive a drive pulse by using the recovered charges;
- and
- a detection circuit that detects a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time, wherein
- said plurality of discharge cells include a capacitive load, and
- said recovery circuit includes
- an inductance circuit having at least one inductance element that has one end connected to said capacitive load, and
- a resonance driving circuit that drives said drive pulse by LC resonance of said capacitive load and said inductance element, said display device further comprising
- a control circuit that controls said recovery circuit so as to vary a recovery time in which said drive pulse is driven by said recovery circuit and a resonance time of said LC resonance depending on the lighting rate detected by said detection circuit.
A display device that displays an image by causing a plurality of discharge cells to selectively discharge, comprising:
- a recovery circuit that recovers charges stored in said discharge cells to drive a drive pulse by using the recovered charges;
- and
- a detection circuit that detects a lighting rate of any of said plurality of discharge cells that are to be turned on at the same time, wherein
- said plurality of discharge cells include a capacitive load, and
- said recovery circuit includes
- an inductance circuit having at least one inductance element that has one end connected to said capacitive load, and
- a resonance driving circuit that drives said drive pulse by LC resonance of said capacitive load and said inductance element, said display device further comprising
- a control circuit that controls said recovery circuit so as to vary a resonance time of said LC resonance depending on the lighting rate detected by said detection circuit.
Dependencies are inferred from the claim text.