Patent ID: 8154498
Filing Date: 2012-04-10
Classification: G09G

Abstract:
1. A display device comprising: a pixel unit formed by forming a common electrode on an inner surface of one of two substrates disposed so as to be opposed to each other across a liquid crystal layer, forming a plurality of row electrodes and a plurality of column electrodes intersecting each other on an inner surface of the other of the two substrates, forming three-terminal switching elements respectively at intersections of the row electrodes and the column electrodes, connecting a first terminal of each of the switching elements to one of the row electrodes, connecting a second terminal of the switching element to one of column electrodes, connecting a third terminal of the switching element to one end of the liquid crystal layer and a retained capacitance, and connecting the other end of the liquid crystal layer to the common electrode; a column drive circuit for converting display data input from an external device to a column voltage, generating a display synchronizing signal for liquid crystal drive, conducting time-division multiplexing on column voltages associated with one row in accordance with the display synchronizing signal, and outputting resulting time-division multiplexed column voltages; a distributor circuit for distributing the time-division multiplexed column voltages supplied from the column drive circuit and outputting the distributed column voltages to the column electrodes; a row drive circuit for outputting row voltages to the row electrodes row by row in accordance with the display synchronizing signal, in order to control turning on/off of the switching elements; and a power supply circuit for outputting the display synchronizing signal to the row drive circuit, outputting a common voltage to the common electrode, and outputting selection signals to the distributor circuit, wherein a first column electrode selected lastly in a frame, when a selection signal is in a selection state, for an arbitrary row electrode is selected first for a next row electrode in said frame and the first column electrode selected lastly in said frame for the arbitrary row electrode is kept selected, and the selection signal remains in said selection state, until a different second column electrode is selected for the next row electrode in said frame, wherein said frame comprises a period from a frame signal to a next frame signal.