Overdrive method and overdrive circuit

The invention provides an overdrive method and an overdrive circuit to achieve the overdrive method. The overdrive circuit comprises a treatment circuit, the treatment circuit comprises a comparison table, and when the current frame data-signals and the previous frame data-signals are input into the treatment circuit at the same time, the corrected gray-scale value for each pixel can be calculated out through a combination of an interpolation computing method and the comparison table, and the treatment circuit outputs a frame of corrected data signals after the gray-scale value for each pixelis corrected. When the gray-scale value for any pixel of the current frame data-signals is equal to the gray-scale value for the corresponding pixel of the previous frame data-signals, the corrected gray-scale value for the pixel is equal to the gray-scale value of the current frame. The overdrive method and the overdrive circuit to achieve the overdrive method improve the display quality of a liquid crystal display devic