Patent ID: 8619070
Filing Date: 2013-12-31
Classification: G09G

Abstract:
1. A gate driving circuit including a plurality of stages cascade-connected to each other and each outputting a respective one of a plurality of gate signals, an n-th stage (wherein, n is an integer) of the stages comprising: a pull-up part outputting a first voltage of a first clock signal as an output signal of the n-th stage in response to an input voltage; a first variable mode part applying a first direction signal to a control part of the pull-up part in response to a vertical start signal or an output signal of a previous one of the stages; and a second variable mode part applying a second direction signal to the control part of the pull-up part in response to the vertical start signal or an output signal of a next one of the stages, the second direction signal being different from the first direction signal, wherein at least one of the first and second variable mode parts includes a variable element, and the variable element comprises: wherein when the first direction signal is applied to the first variable mode part, the second direction signal is applied to the second variable mode part, the first direction signal has the first level voltage, and the second direction signal has a second level voltage that is lower than the first level voltage, the n stages are driven in a first direction; and wherein when the second direction signal is applied to the first variable mode part, the first direction signal is applied to the second variable mode part, the first direction signal has the first level voltage, and the second direction signal has the second level voltage, the n stages are driven in a second direction opposite to the first direction.