Gate driver and display device including the same

A gate driving part includes shift registers and connection control blocks. The shift registers are respectively connected to gate lines in a scalable display panel Adjacent n number of shift registers (n is an integer of 2 or more) are grouped to form shift register groups. The connection control blocks change the connection structure of the n number of shift registers included in each of the shift register groups according to whether the stretchable display panel is extended or not. Therefore, the gate driving part can drive the scalable display panel so that the pixel density (PPI) of an extended panel region in the stretchable display panel is maintained even if the stretchable display panel is extended.