A flat panel display including a first substrate, a second substrate, a light emitting region between the first and second substrates, and a sealant applied outside of the light emitting region, wherein the sealant has a rectangular shape and includes a first sealing part and a third sealing part opposite each other, and a second sealing part and a fourth sealing part opposite each other, the first, second, third, and fourth sealing parts being interconnected, and wherein the flat panel display includes a compensating part corresponding to at least one of the first, second, third, and fourth sealing parts on or in the first or second substrate.