Patent ID: 7542619

Claim:
An image display method comprising: inputting an image signal to a frame converter; multiplying a frame frequency of the image signal by the frame converter so that one frame is divided into a plurality of sub-frames including at least a first sub-frame and a second sub-frame; outputting, from the frame converter, a first original signal that corresponds to the first sub-frame and a second original signal that is identical to the first original signal and corresponds to the second sub-frame; reducing a high-spatial frequency component of the image signal used for image display in the first sub-frame; increasing a high-spatial frequency component of the image signal used for image display in the second sub-frame in accordance with an amount of the reduction in the high-spatial frequency component of the first original signal; and displaying the first sub-frame based on the image signal in which the high-spatial frequency component of the first original signal has reduced and the second sub-frame based on the image signal in which the high-spatial frequency component has increased.