Patent ID: 7999781

Claim:
A driving method for driving an active matrix liquid crystal display device provided with a memory section for storing input data, which is a signal being inputted from outside, during a vertical period, the active matrix liquid crystal display device for sequentially displaying frames of image on a display section including (A) scanning signal lines, (B) video signal lines, the scanning signal lines and video signal lines intersecting with each other on a single substrate, (C) pixel electrodes arranged in a grid-like region compartmentalized by the scanning signal lines and the video signal lines, (D) counter electrodes so arranged that the pixel electrodes and the counter electrodes face each other across a liquid crystal layer, the active matrix liquid crystal display device in which each of the frames is sequentially displayed by (I) driving the counter electrodes, (II) generating image data which corresponds to one of the frames, based on the input data, and (III) outputting the image data to a driving circuit by the memory section in a subsequent vertical period, the method comprising: driving the counter electrodes at a frequency higher than a frequency within an audible frequency band for a human being; dividing one frame period, in which the one of the frames is displayed, into (i) a drive period in which the counter electrodes are driven and (ii) a drive suspension period in which the counter electrodes are not driven, the image data being output to the driving circuit from the memory section during the drive period; outputting from the memory section, in synchronization with the drive period, the image data to the driving circuit at a same frequency as a frequency for driving the counter electrodes and at a different frequency than a frequency of the input data being input, the outputted image data and the driving the counter electrodes being separate signals, and the drive period being the subsequent vertical period; and stopping outputting of the image data to the driving circuit during the drive suspension period.