Patent ID: 7936325

Claim:
A display device displaying an image by dividing each frame into two subframes, including a first subframe and a second subframe, said display device comprising: a display section configured to display an image, with luminance in accordance with a luminance grayscale level represented by an incoming display signal; and a control section configured to generate a first display signal and a second display signal for the first and second subframes, to alternately output the first and second display signals to the display section, and to control to output the display signals twice per frame period so that the dividing of the frames does not change a frame luminance which is an average luminance output of a pixel within the display section in one frame, wherein if the display of one frame in the display section is not white, the control section is configured to create a difference between luminance outputs in the two subframes and sets the luminance difference to a value less than a a sub-maximum luminance, the sub-maximum luminance being equal to a luminance of a subframe for a white display; the control section, if the frame luminance is less than or equal to a predetermined threshold, designates the first subframe for black display in which luminance is a minimum luminance and adjusts luminance for the second subframe to produce a display, and if the frame luminance is greater than the threshold, sets the difference between the luminance outputs in the two subframes to a value less than the sub-maximum luminance; the threshold is set to a value less than the sub-maximum luminance: and the threshold is set to a luminance range in accordance with luminance grayscale levels from 50% to 98% of a luminance grayscale level in accordance with the sub-maximum luminance.