Flexible display device and method for manufacturing the device

A method for manufacturing a flexible display device, the method comprising:

• providing a carrier substrate comprising a first material, the carrier substrate further comprising first and second main faces opposite to each other;
• providing a buffer substrate on a first main face of the carrier substrate, the buffer substrate comprising a second material more flexible than the first material;
• providing a thin-film transistor array on a buffer substrate;
• providing an organic light-emitting element array on the thin-film transistor array, the organic light-emitting element array comprising a plurality of organic light-emitting elements respectively corresponding to a plurality of sub-pixels;
• providing a sealing substrate on the organic light-emitting element array such that the thin-film transistor array and organic light-emitting element array are sealed between the buffer and sealing substrates;
• and
• etching and polishing a portion of the carrier substrate from the second main face thereof, to provide a remaining portion of the carrier substrate as a support substrate,
• wherein the support substrate has a first thickness.