Patent ID: 9035865
Filing Date: 2015-05-19
Classification: G09G,G11C

Abstract:
1. A gate driving circuit for driving a display apparatus, the gate driving circuit comprising a plurality of stages, wherein each stage comprises: first, second, and third nodes, wherein the third node is directly electrically connected to one end of a current path across at least one transistor and wherein the first node is directly electrically connected to another end of the current path across the at least one transistor; an input circuit unit configured to transmit a driving voltage directly to the first node in response to an output signal of a previous stage or to a start pulse; a driving circuit unit comprising the second node and configured to generate an output signal according to a voltage of the first node; and a leakage preventing circuit unit configured to prevent a leakage current from the first node by maintaining the third node in a high impedance (high-Z) state when the first node is in a high-Z state, wherein the third node is configured to be maintained at a voltage level such that a gate to source voltage of the transistor has a negative value while the first node has a positive voltage.