Patent ID: 7027074

Claim:
A display device comprising: means for selecting a light emitting state or a non-light emitting state in each of a plurality of sub-frame periods in accordance with a first bit to a n-th bit of a digital signal (where n is a natural number) input to a pixel; means for selecting a first display mode or a second display mode; means for inputting the first bit to the n-th bit of the digital signal to the pixel as a first digital image signal during the one frame period in the first display mode; means for inputting the first bit to a m-th bit of the digital signal (where m is a natural number less than n) of the first bit to the n-th bit of the digital signal to the pixel as a second digital image signal during the one frame period in the second display mode; and means for changing a length of each of first to m-th sub-frame periods in the second display mode which are respectively corresponding to the second digital image signal, to q times a length of each of the first to m-th sub-frame periods in the first display mode which are respectively corresponding to the first bit to the m-th bit of the digital signal of the first digital image signal (where q is a number greater than 1), wherein a clock signal is inputted to the means for selecting the light emitting state or the non-light emitting state, and wherein a frequency of the clock signal in the second display mode is different from a frequency of the clock signal in the first display mode.