Display device

A display device, comprising:

• a first transistor including:
• a first active layer disposed on a substrate;
• and
• a gate electrode disposed on the first active layer;
• an insulation layer disposed on the gate electrode;
• a second transistor including:
• a lower gate electrode disposed on the insulation layer;
• a second active layer disposed on the lower gate electrode, a first end portion of the second active layer being electrically connected to an end portion of the first active layer;
• and
• an upper gate electrode disposed on the second active layer;
• a lower gate signal line extending in a first direction, a portion of the lower gate signal line forming the lower gate electrode;
• an upper gate signal line disposed on the lower gate signal line and extending in the first direction, a portion of the upper gate signal line forming the upper gate electrode;
• and
• a first connection pattern disposed on the upper gate signal line and connecting the gate electrode and a second end portion of the second active layer, wherein
• a first area in which the lower gate signal line and the first connection pattern overlap each other is within a second area in which the upper gate signal line and the first connection pattern overlap each other, in a plan view, and
• a width of the upper gate sianal line overlapping the first connection pattern is greater than a width of the lower gate signal line overlapping the first connection pattern.