Display device and method of manufacturing supporting part

A method of manufacturing a supporting part, the method comprising:

• preparing a metal plate comprising a sub-supporting plate;
• defining first grooves, which are arranged in a first direction, extend in a second direction crossing the first direction, and are spaced apart from opposite sides of the sub-supporting plate, which are opposite to each other in the second direction, in an upper surface of the sub-supporting plate;
• defining second grooves, which are arranged in the first direction, extend in the second direction, overlap the first grooves, and are spaced apart from the opposite sides of the sub-supporting plate, from a lower surface of the sub-supporting plate to the first grooves;
• separating supporting bars between openings defined by the first and second grooves from the sub-supporting plate;
• and
• providing a supporting film on the supporting bars,
• wherein each of the second grooves is greater than each of the first grooves.

A method of manufacturing a supporting part, the method comprising:

• preparing a metal plate comprising a first supporting plate, a second supporting plate, and a sub-supporting plate, which are arranged in a first direction;
• defining first grooves arranged in the first direction and extending to opposite sides of the sub-supporting plate in a second direction crossing the first direction in an upper surface of the sub-supporting plate;
• providing a supporting layer on the upper surface of the sub-supporting plate and the first grooves;
• and
• defining second grooves, which are arranged in the first direction, extend to the opposite sides of the sub-supporting plate in the second direction, and overlap the first grooves, from a lower surface of the sub-supporting plate to the first grooves to define a plurality of supporting bars between the first grooves and between the second grooves,
• wherein each of the second grooves is greater than each of the first grooves.