Patent ID: 9099859
Filing Date: 2015-08-04
Classification: G02F,G09G,H01L,H02H

Abstract:
1. An electro-static discharging protection circuit comprising: a first thin film transistor, having a drain connected to a high level output terminal; a second thin film transistor, having a source connected to a source of the first thin film transistor as a discharging terminal, a drain connected to the high level output terminal and a gate connected to a low level output terminal; a third thin film transistor, having a source and a gate connected to the low level output terminal and a drain connected to the gate of the first thin film transistor; and a voltage difference maintaining unit connected between the gate of the first thin film transistor and the discharging terminal, wherein the voltage difference maintaining unit is used to make the voltage difference between the gate of the first thin film transistor and the discharging terminal maintain unchanged, the discharging terminal being used for connecting gate lines or data lines.