US Patent 11758755 Display device including substrate with polymeric films

A display device includes: a base substrate including a first polymeric film; an active pattern on the base substrate and including a first channel region; and a first gate electrode overlapping the first channel region, wherein the first polymeric film has a first thickness in a first area overlapping the first channel region and a second thickness, which is smaller than the first thickness, in a second area different from the first area.