Scan driver including plurality of first stages and plurality of second stages for outputting plurality of scan signals

A scan driver comprising:

• a plurality of stages output first scan signals in a first period in a frame period and second scan signals in a second period in the frame period,
• wherein the plurality of stages sequentially output the first scan signals to first scan lines in the first period in the frame period in response to a first start signal, and sequentially output the second scan signals to second scan lines in the second period in the frame period in response to a second start signal, and
• wherein a duration of the second scan signals is at least two horizontal periods,
• wherein a duty of the first scan signal in the first period is different from a duty of the second scan signal in the second period,
• wherein the first scan signals are sequentially outputted by being shifted by one horizontal period (H), and
• wherein the second scan signals are sequentially outputted by being shifted by bH, where b is a multiple of 2.