Driving circuit of a liquid crystal display and driving method thereof

A driving circuit for driving a liquid crystal display, the liquid crystal display comprising:

• a liquid crystal panel, the liquid crystal panel comprising:
• a plurality of scan lines;
• a plurality of data lines;
• and
• a plurality of pixels, each pixel is connected to a corresponding scan line and a corresponding data line, and each pixel has a switching device connected to the corresponding scan line and the corresponding data line;
• the driving circuit comprises:
• a scan line driving circuit for continuously providing scan voltages to the scan lines;
• a image data input terminal for receiving an M-bit image data;
• a bit processor for extracting N most significant bits (MSB) from the M-bit image data to form an N-bit image data, N is smaller than M;
• an image memory for storing the N-bit image data and delaying the N-bit image data by a frame period;
• a comparison circuit for comparing P MSB of a current M-bit image data with the N-bit delayed image data to determine a result value;
• a lookup table (LUT) for outputting an over-driving image value in accordance with the P MSB and the N-bit delayed image data;
• a multiplexer for outputting Q least significant bits (LSB) of the over-driving image value when the result value indicates that the P MSB of the current M-bit image data and the N-bit delayed image data are not equal, and for outputting Q LSB of the M-bit image data when the result value indicates that the P MSB of the current M-bit image data and the N-bit delayed image data are equal;
• and
• a data line driving circuit for producing a data voltage in accordance with output of the multiplexer and (M-Q) MSB of the over-driving image value, and providing the data voltage to the corresponding data line.