Apparatus and method for driving liquid crystal display

A method of driving a liquid crystal display, the method comprising:

• determining, by a transition check unit, whether there has been a change between an input image signal of a first frame and an input image signal of a second frame;
• overdriving the input image signal of the second frame in an overdrive direction when it is determined that there has been a change between the input image signals of the first and second frames, wherein the over direction is the same as a changed direction of the input image signals of the input image signals of the first and second frames;
• determining whether there has been a change between a the input image signal of the second frame and an input image signal of a third frame;
• changing the input image signal of the third frame in an opposite direction to the overdrive direction when it is determined that there has not been a change between the input image signals of the second and third frames;
• and
• selectively outputting, by a data selection unit, one of an input image signal, the input image signal which is overdriven in the overdrive direction, and the input image signal which is changed in the opposite direction to the overdrive direction according to the determination whether there has been a change between the input image signals of the first and second frames and whether there has been a change between the input image signals of the second and third frames,
• wherein the input image signal which is overdriven in the overdrive direction is output when there has been a change between the input image signals of the first and second frames, and the input image signals which is changed in the opposite direction to the overdrive direction is output when there has not been a change between the input image signals of the second and third frames.

A non-transitory computer readable recording medium having recorded thereon a program for performing a method comprising:

• determining, by a transition check unit, whether there has been a change between an input image signal of a first frame and an input image signal of a second frame;
• overdriving the input image signal of the second frame in an overdrive direction when it is determined that there has been a change between the input image signals of the first and second frames, wherein the overdrive direction is the same as a changed direction of the input image signals of the first and second frames;
• determining whether there has been a change between the input image signal of the second frame and an input image signal of a third frame;
• changing the input image signal of the third frame in an opposite direction to the overdrive direction when it is determined that there has not been a change between the input image signals of the second and third frames;
• and
• selectively outputting, by a data selection unit, one of an input image signal, the input image signal which is overdriven in the overdrive direction, and the input image signal which is changed in the opposite direction to the overdrive direction according to the determination whether there has been a change between the input image signals of the first and second frames, and whether there has been a change between the input image signals of the second and third frames,
• wherein the input image signal which is overdriven in the overdrive direction is output when there has been a change between the input image signals of the first and second frames, and the input image signal which is changed in the opposite direction to the overdrive direction is output when there has not been a change between the input image signals of the second and third frames.