Flat-panel video display apparatus and its drive method

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,
• a picture pattern determination unit using a video signal supplied to the signal including means for obtaining correction information for setting the second or third voltage value.

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:
• providing a picture pattern determination unit obtaining brightness correction information in accordance with a picture pattern of a signal supplied to the signal line;
• 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 and controls a voltage value based on brightness correction information from the picture pattern determination unit in the controller.