Patent ID: 9035864
Filing Date: 2015-05-19
Classification: G09G,G11C

Abstract:
1. A display device comprising: a gate signal line drive circuit which is configured to apply a HIGH voltage to a gate signal line during a signal HIGH period which is repeated periodically and to apply a LOW voltage to the gate signal line during a signal LOW period which is a period other than the signal HIGH period, wherein the gate signal line drive circuit comprises: a HIGH voltage applying switching element which includes an input electrode, an output electrode, and a gate electrode, and which is brought into an ON state in response to the signal HIGH period and applies a HIGH voltage to the gate signal line from the output electrode, and is brought into an OFF state in response to the signal LOW period; at least first and second LOW voltage applying switching elements which are connected to the gate signal line parallel to each other, and each of which includes an input electrode, an output electrode, and gate electrode, and which are configured to apply a LOW voltage to the gate signal line from the output electrode in an ON state; a first AC voltage supplying line being electrically connected with the input electrode of the first LOW voltage applying switching element; and a second AC voltage supplying line being electrically connected with the input electrode of the second LOW voltage applying switching element, wherein, in a first period, which includes a predetermined number being two or more of the signal HIGH periods sequentially arriving and which starts during the signal LOW period, the first LOW voltage applying switching element is brought into an OFF state, while the second LOW voltage applying switching element is brought into an ON state in response to the signal LOW period and is brought into an OFF state in response to the signal HIGH period, and wherein, in a second period, which includes the predetermined number of the signal HIGH periods sequentially arriving, which starts during the signal LOW period, and which follows the first period, the second LOW voltage applying switching element is brought into an OFF state, while the first LOW voltage applying switching element is brought into an ON state in response to the signal LOW period and is brought into an OFF state in response to the signal HIGH period.