Display panel and manufacturing method thereof

A display panel, having a display region and a non-display region located on at least one side of the display region;

• and comprising:
• a first substrate, having a first base located at the non-display region and a second base located at the display region, wherein the first base comprises a first surface, a second surface perpendicular to the first surface and at least one third surface connecting the first surface and the second surface, the second surface is inseparable from the first substrate, and the first surface and the second surface extend along two different directions;
• wherein in a direction perpendicular to the first surface, a thickness of the first base on the second surface is less than a thickness of the first base on the first surface;
• and
• a plurality of first connection portions, disposed on the second surface and electrically connected to a plurality of first signal lines to transmit display signals through the plurality of first signal lines;
• wherein the plurality of first signal lines trace through the first surface and the at least one third surface.