a flat panel display includes a glass substrate , an organic light - emitting part , and a sealing part . the organic light - emitting part includes one or more organic light - emitting devices formed on a surface of the glass substrate , which has a thickness of about 0 . 05 mm to about 0 . 5 mm . the sealing part seals the organic light - emitting part and protects it from damage during the manufacturing process . a method for manufacturing the flat panel display comprises preparing a glass substrate of approximately 0 . 7 mm thickness or greater ; forming a plurality of organic light - emitting devices on a surface of the glass substrate , wherein a group of one or more of the plurality of organic light - emitting devices constitutes an organic light - emitting part ; sealing each organic light - emitting part ; and etching the glass substrate to a predetermined thickness .