SHIFT REGISTER AND DISPLAY DEVICE HAVING THE SAME, IN WHICH THE NUMBER OF EXTERNAL BUS LINES IS REDUCED

摘要

PURPOSE: A shift register and a display device having the same are provided to reduce the number of external bus lines. CONSTITUTION: The shift register includes a plurality of stages generating a gate signal to a plurality of gate lines of a display device in sequence. According to each stage, the first pull-up driver(230) generates the first control signal in response to an output signal or a control signal of a prior stage. A pull-up unit(210) generates an output signal of a current stage in response to the first power clock and the first control signal. The second pull-up driver(250) generates the second control signal in response to the first power clock and the second power clock. And the third pull-up driver(240) drives in response to the output signal of a following stage by being connected to a low level port.