SCAN SIGNAL LINE DRIVE CIRCUIT AND DISPLAY DEVICE PROVIDED THEREWITH

摘要

In order to enhance the stability of a circuit operation in a monolithic gate driver, a bistable circuit is provided with a charge replenishment circuit (71) configured from a capacitor (CAP2), a thin-film transistor (MA) having a first electrode to which a first clock (CKA) for charge replenishment is applied, a second electrode connected to a third node (N3) connected to one end of the capacitor (CPA2), and a third electrode connected to a second node (N2) that should be maintained high during a normal operation period, and a thin-film transistor (MB) having a first electrode to which a second clock (CKB) for charge replenishment is applied, a second electrode to which high-level direct-current power supply potential (VDD) is applied, and a third electrode connected to the third node (N3). The first clock (CKA) for charge replenishment and the second clock (CKB) for charge replenishment are alternately driven high so that a period in which "the first clock (CKA) for charge replenishment goes high and the second clock (CKB) for charge replenishment goes high" does not occur.