Patent ID: 7817169

Claim:
A display device which displays gradations corresponding to display data inputted from an external system, the display device comprising: a display panel having a plurality of pixels arranged in a matrix array; a data driver which outputs voltages corresponding to the gradations of the display data to the pixels of the display panel; a scanning driver which scans the pixels to which the voltages are to be supplied, first and second gradation conversion circuits which convert an intermediate gradation of the display data to a second gradation different from the intermediate gradation; and a signal generation circuit which generates a control signal for driving the display panel based on an input signal from the external system; wherein: the signal generation circuit generates a control signal to divide the display data of one frame into the plural fields for chronological order, each pixel of the display panel displays one gradation which is required by an external system by displaying the gradation of each field in one frame period, when gradation required by the external system is a middle gradation between a greatest gradation and a smallest gradation, at least one field of the each field in one frame period is a bright field to be displayed with a brightness that is higher than a brightness corresponding to a gradation required by the external system, and another field is a dark field to display with the brightness that is lower than the brightness corresponding to gradation required by the external system, a gradation voltage of the bright field and the dark field are generated by different gradation voltage generation circuits, the gradation voltage generation circuit for the bright fields includes a resistance division ratio set so that a potential difference of the low gradation side becomes coarse, and the gradation voltage generation circuit for the dark fields includes a resistance division ratio is set so that a potential difference of the high gradation side becomes coarse.