A scan driver includes a plurality of signal lines configured to transfer a scan line selection signal for selecting a target scan line among a plurality of scan lines, and a plurality of logical elements respectively connected to some or all of a plurality of signal line groups respectively including grouped ones of the signal lines based on a combination calculation, the plurality of logical elements being respectively connected to the scan lines, and being configured to provide output signals to the scan lines, wherein a number of the signal line groups is greater than, or equal to, a number of the logical elements.