A scan driver and display device using the same are disclosed. In one aspect, the scan driver includes a plurality of stages. Each stage includes a first transistor electrically connected between a first voltage input terminal and an output terminal, wherein the first transistor comprises a gate electrode electrically connected to a first node. Each stage also includes a second transistor electrically connected between the output terminal and a second clock signal input terminal and having a gate electrode electrically connected to a second node. Furthermore, each stage includes third and fourth transistors electrically connected in series. Each stage further includes a fifth transistor having first and second electrodes and a gate electrode electrically connected to the second node, the first electrode is electrically connected between the third and fourth transistors, and the second electrode is electrically connected to a second voltage input terminal configured to receive a second voltage.