Flat display apparatus and control circuit and method for controlling the same

A flat display apparatus comprising:

• a display panel comprising:
• a plurality of data lines paralleled extended on the display panel along a first direction for transmitting image data used for display image;
• a plurality of scanning lines paralleled extended on the display panel along a second direction;
• and
• a plurality of pixel units positioned adjacent the intersections of the data lines and the scanning lines, the scanning lines being configured for turning on/off the pixel units;
• a plurality of data driving units respectively electrically coupled to the data lines for providing image data for displaying image;
• and
• a control circuit comprising:
• a signal generating module configured for generating a first gate high level voltage signal and a second gate high level voltage signal;
• a first gate driving unit electrically coupled to the signal generating module and configured for receiving the first gate high level voltage signal as a voltage signal to be provided to one of the scanning lines;
• and
• a second gate driving unit electrically coupled to the signal generating module and configured for receiving the second gate high level voltage signal as a voltage signal to be provided to other one of the scanning lines,
• wherein the first gate driving unit and the second gate driving unit are electrically coupled to each other so as to sequentially transmit an enable signal for determining which gate driving unit is enabled, and the first gate high level voltage signal and second gate high level voltage signal respectively comprise a falling edge with a slope, a duration time of the falling edge of the first gate high level voltage signal is longer than that of the falling edge of the second gate high level voltage signal,
• wherein the first gate driving unit is close to the signal generating module and the second gate driving unit is far away from the signal generating module.

A method for controlling a flat display apparatus comprising a plurality of gate driving units, each of which controls the operation of a scan line in the flat display apparatus, the method comprising:

• generating an original gate high level voltage signal;
• generating a first chamfering control signal and a second chamfering control signal;
• generating the first gate high level voltage signal by using the first chamfering control signal with a first duty cycle to modify the voltage of the original gate high level voltage signal;
• generating the second gate high level voltage signal by using the second chamfering control signal with a second duty cycle to modify the voltage of the original gate high level voltage signal;
• and
• providing a first gate high level voltage signal and a second gate high level voltage signal sequentially to the gate driving units respectively,
• wherein the first duty cycle of the first chamfering control signal is longer than the second duty cycle of the second chamfering control signal,
• wherein the first and second gate high level voltage signals respectively comprises a first falling edge with a first slope and a second falling edge with a second slope, and a duration time of the first falling edge of the first gate high level voltage signal is longer than a duration time of the first falling edge of the second gate high level voltage signal.