Patent ID: 7932915

Claim:
A display device, wherein a single frame is divided into at least first and second sub-frames so as to display a multiple-luminance gradation image, said display device comprising: a display section for displaying the multiple-luminance gradation image whose luminance is based on a luminance gradation of a display signal; and a control section for generating a first display signal in the first sub-frame and a second display signal in the second sub-frame so that division of the frame does not vary a total luminance outputted from the display section in a single frame, and for outputting the first and second display signals to the display section for displaying the multiple-luminance gradation image, wherein the control section is adapted to set a luminance gradation of the second display signal to a minimum value and adjust a luminance gradation of the first display signal to display an image when the brightness of the image is relatively low, the control section is adapted to set the luminance gradation of the first display signal to a maximum value and adjust the luminance gradation of the second display signal to display an image when the brightness of the image is relatively high, and the control section is adapted to divide the frame based upon a ratio, of a period corresponding to the first sub-frame and a period corresponding to the second sub-frame, which improves correlation between actual and expected brightness of the display section for displaying the multiple-luminance gradation image, the ratio being 1:n or n:1, with a value of n being a natural number more than 1.