Apparatus and method for manufacturing display device

An apparatus for manufacturing a display device, the apparatus comprising:

• a moving part comprising:
• a belt that circulates;
• a roller that circulates the belt;
• and
• at least one meandering prevention device that moves in a first direction parallel to a direction of a rotation shaft of the roller and prevents meandering of the belt;
• and
• a polishing head disposed corresponding to the moving part, the polishing head polishing a surface of a base material disposed on a first surface of the belt, wherein
• the at least one meandering prevention device includes a first roller having a cylindrical shape with a first end, a second end, and a main surface between the first end and the second end,
• the at least one meandering prevention device further comprises a first motor that rotates the first roller and a first spacing adjusting device that linearly moves the first roller in the first direction,
• the first end of the first roller faces a second surface of the belt, the second surface being a side surface of the belt, and
• the first end of the first roller directly abuts the second surface of the belt in the first direction.