US Patent 11181452 Folding test device

A folding test device includes a jig including a first support plate and a second support plate rotatably connected to the first support plate, a first rotary plate supporting the first support plate, a second rotary plate supporting the second support plate and separated from the first rotary plate, a first frame separated from the second rotary plate and rotatably connected to the first rotary plate, and a second frame separated from the first rotary plate and rotatably connected to the second rotary plate, wherein the first frame and the second frame are rotatably connected to each other at an intersection point.