Patent ID: 6989824

Claim:
A driving method for driving an electro-optical device having a pixel with a pixel electrode arranged corresponding to an intersection where a scanning line and a data line cross, the pixel having a switching element, an electro-optical material, a storage capacitor and a counter electrode arranged to be opposed to the pixel electrode, in a plurality of driving fields to display an image with gray scale, the method comprising the steps of: dividing each driving field into a plurality of subfields; supplying a scanning signal to the scanning line in each subfield; and feeding a binary signal for controlling the pixel to be in an ON state or an OFF state from the data line through the switching element to the electro-optical material and the storage capacitor, the storage capacitor holding the binary signal; and the binary signal setting the pixel to the ON state or the OFF state so that a ratio of a period of voltage application time to set the pixels to the ON state to a period of voltage application time to set the pixels to the OFF state in each driving field is responsive to the gray scale level of the pixel, the binary signal being shifted in response to a level of voltage applied to the counter electrode.