Patent ID: 9001015
Filing Date: 2015-04-07
Classification: G09G

Abstract:
1. A liquid crystal display device, comprising: a liquid crystal panel in which a plurality of pixels for displaying an image are arranged; and a driving circuit configured to supply an image signal to the liquid crystal panel so that the liquid crystal panel displays the image, each of the plurality of pixels including: a storage element configured to store an electric potential which varies depending on an image signal supplied from the driving circuit, and a display element to which a voltage for displaying the image is applied by the electric potential being supplied to the display element, the driving circuit including: a polarity reversal instruction section configured to cause an AC voltage, which is applied across the display element, to be subjected to a polarity reversal, an image signal output instruction section configured to issue an instruction on supplying the image signal to the liquid crystal panel, and an image signal storage configured to store the image signal, wherein in a case where the image signal output instruction section determines that a polarity reversal period is contained in an image transmission period, the image signal output instruction section carries out the instruction on supplying the image signal to the liquid crystal panel after a polarity reversal of the voltage is completed, during the image transmission period, a change in the voltage, which is supplied from the storage element to the display element, (i) is initiated in response to the image signal being supplied to the liquid crystal panel and (ii) is then completed, during the polarity reversal period, the voltage applied across the display element is subjected to a polarity reversal in response to a polarity reversal of the AC voltage, the image signal output instruction section instructs the image signal storage to output the image signal, upon receipt of an instruction on outputting the image signal from the image signal output instruction section, the image signal storage supplies the image signal, which is stored in the image signal storage, to the liquid crystal panel, the polarity reversal instruction section generates a polarity reversal signal indicative of a given cycle on which the AC voltage is subjected to the polarity reversal, the liquid crystal display device further comprises an AC voltage output section configured to (i) cause an AC voltage to be subjected to a polarity reversal on a given cycle and (ii) supply the AC voltage to the display element, the polarity reversal instruction section generates a reference signal indicative of reference time points appearing on a first cycle, at each of the reference time points the AC voltage being subjected to a polarity reversal; and the polarity reversal signal is indicative of polarity reversal time points which (i) are delayed from the respective reference time points by a predetermined time period and (ii) appear on a second cycle.