Patent ID: 9711105
Date: 2017-07-18
CPC Classifications: G09G

Claim:
1. A display device comprising a plurality of gate signal lines and a gate signal line driving circuit, the gate signal line driving circuit comprising a plurality of basic circuits each of which is configured to output a gate signal having a HIGH voltage during a signal HIGH period and having a LOW voltage during a signal LOW period, which is a period other than the signal HIGH period, to the gate signal line, wherein the plurality of basic circuits includes a first basic circuit and a second basic circuit which is configured to assume a signal HIGH period before the signal HIGH period of the first basic circuit, and the first basic circuit and the second basic circuit respectively comprise: a LOW voltage applying switching circuit configured to apply a LOW voltage to the gate signal line in response to the signal LOW period; a HIGH voltage applying switching element configured to apply a HIGH voltage to the gate signal line in response to the signal HIGH period; and a LOW voltage applying OFF control element configured to apply an OFF voltage to a switching input terminal of a switch of the LOW voltage applying switching circuit such that the switch of the LOW voltage applying switching circuit is turned off in the signal HIGH period, wherein the LOW voltage applying OFF control element of the first basic circuit is turned on in response to an ON voltage applied to an internal voltage line, the internal voltage line is directly connected between the first basic circuit and the second basic circuit without directly connecting with the gate signal line, and wherein an OFF voltage for the LOW voltage applying OFF control element of the first basic circuit is applied to the internal voltage line and the LOW voltage applying OFF control element of the first basic circuit is turned off in response to the OFF voltage applied to the internal voltage line when the LOW voltage applying switching circuit of the second basic circuit outputs the LOW voltage to the gate signal line.