Method for driving liquid crystal display with scanning backlight module
An exemplary method for driving an LCD with an LCD panel and a plurality of light sources controlled by an inverter is provided. The liquid crystal panel includes a gate driving circuit, a timing controller, and a plurality of scanning lines. The method includes a: the timing controller controlling the gate driving circuit to generate scanning signals during a frame time period; step b: the timing controller controlling the inverter to successively turn on and turn off the light sources, when one of the light source is turned on, light beams emitted by the light source illuminating the liquid crystal panel to form a brightness region thereon, thereby the scanning signals being provided to the scan lines corresponding to the brightness region; when the light source is turned off, the scanning signals being provided to the scan lines corresponding to the brightness region again.
1 . A method for driving a liquid crystal display, the liquid crystal display comprising a liquid crystal panel and a plurality of light sources, the liquid crystal panel comprising a gate driving circuit, a timing controller, and a plurality of scanning lines, the light sources being controlled by an inverter, the method comprising:
step a: the timing controller controlling the gate driving circuit to generate scanning signals during a frame time period;
step b: during the same frame time period, the timing controller controlling the inverter to successively turn on and turn off the light sources from a first one of the light sources to a last one of the light sources, wherein when one of the light sources is turned on, light beams emitted by the light source illuminate the liquid crystal panel to form a bright region on the liquid crystal panel corresponding to the light source, and first scanning signals are provided to a plurality of the scan lines corresponding to the bright region;
and when said one of the light sources is turned off, second scanning signals are provided to the same plurality of scan lines that corresponded to the bright region;
step c: repeating steps a and b during a next frame time period.
2 . The method as claimed in claim 1 , wherein each of the light sources is a cold cathode fluorescent lamp.
3 . The method as claimed in claim 1 , wherein each of the light sources is a plurality of light emitting diodes arranged in alignment with each other.
4 . The method as claimed in claim 1 , wherein the number of light sources is k, the frame time period is T, and a time interval between two adjacent first and second scanning signals is T/k.
5 . The method as claimed in claim 1 , wherein the number of light sources is k, the frame time period is T, and a time interval between two adjacent first and second scanning signals is greater than T/k.
6 . The method as claimed in claim 1 , wherein the number of light sources is k, the frame time period is T, and a time period during which each of the light sources is turned on is T/k.