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US 2006/0221003 A1Published application
Flat-panel video display apparatus and its drive method
AssigneeKabushiki Kaisha Toshiba
InventorsYasuhiro Ookawara, Yoshihiko Ogawa, Ken Ito, Hiroshi Yoshimura, Ko Sato, Keiko Hirayama
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Abstract
There is provided a flat-panel video display apparatus, which improves a brightness of a screen at low price and low power consumption, and reduces flicker. When a scanning line is successively driven by several lines, the apparatus is provided with means for supplying a first voltage to a driven main scanning line, and for supplying a second voltage lower than the first voltage or third voltage having a drive period shorter than a drive period of the main scanning line to simultaneously drive other sub-scanning lines.
Claims11
A video display apparatus comprising:
- a plurality of signal lines;
- a plurality of scanning lines intersecting with said plurality of signal lines;
- two-dimensionally arrayed elements to be selected by the corresponding scanning line, and to be supplied with a signal from the corresponding signal line;
- a scanning line drive unit setting a main scanning line and a sub-scanning line adjacent to each other in said plurality of scanning lines to simultaneously drive them, and successively scanning them, and further, supplying a first voltage to the main scanning line, supplying a second or third voltage to the sub-scanning line, supplying a reference voltage to a non-drive scanning line, the second voltage being lower than the first voltage, the third voltage being shorter than a drive period of the main scanning line and having a drive period;
- and
- a signal line drive unit supplying a signal to an element connected to a scanning line driven by the scanning line drive unit via said plurality of signal lines.
3 more elements
A video display apparatus comprising:
- a plurality of signal lines;
- a plurality of scanning lines intersecting with said plurality of signal lines;
- two-dimensionally arrayed elements to be selected by the corresponding scanning line, and to be supplied with a signal from the corresponding signal line;
- a scanning line drive unit selectively driving said plurality of scanning lines;
- a signal line drive unit supplying a signal to an element connected to a scanning line driven by the scanning line drive unit via said plurality of signal lines;
- and
- a power unit for supplying a voltage to the scanning line via the scanning line drive unit,
- the scanning line drive unit setting a main scanning line and a sub-scanning line adjacent to each other in said plurality of scanning lines to simultaneously drive them, and successively scanning them, and further, including means for supplying a first voltage to the main scanning line, for supplying a second lower than the first voltage or third voltage having a drive period shorter than a drive period of the main scanning line to the sub-scanning line, and for supplying a reference voltage to a non-drive scanning line,
- the power unit including a circuit for generating the first voltage and the second or third voltage.
6 more elements
A drive method of a video display apparatus including:
- a plurality of signal lines;
- a plurality of scanning lines intersecting with said plurality of signal lines;
- two-dimensionally arrayed elements to be selected by the corresponding scanning line, and to be supplied with a signal from the corresponding signal line;
- a scanning line drive unit selectively driving said plurality of scanning lines;
- a signal line drive unit supplying a signal to an element connected to a scanning line driven by the scanning line drive unit via said plurality of signal lines;
- a power unit for supplying a voltage to the scanning line via the scanning line drive unit;
- and a controller, comprising:
- controlling the scanning line drive unit so that the scanning line drive unit sets a main scanning line and a sub-scanning line adjacent to each other in said plurality of scanning lines to simultaneously drive them, and successively scans them, and further, supplies a first voltage to the main scanning line, supplies a second lower than the first voltage or third voltage having a drive period shorter than a drive period of the main scanning line to the sub-scanning line, and supplies a reference voltage to a non-drive scanning line, in the controller;
- and
- controlling the power unit so that the power unit generates the first voltage or second or third voltage.
7 more elements
Dependencies are inferred from the claim text.