Patent ID: 8062914

Claim:
A method for fabricating a flat panel display device, the method comprising: preparing a first substrate, and a second substrate having a greater thermal expansion coefficient than the first substrate; forming a first insulating film on an outer surface of the first substrate, wherein the first insulating film has a first thermal expansion coefficient; forming a light emitting unit on an inner surface of the first substrate, the light emitting unit comprising thin film transistors, a first electrode connecting with the thin film transistors, a second electrode opposing the first electrode, and an emission layer interposed between the first and second electrodes; forming a second insulating film on an outer surface of the second substrate, wherein the second insulating film has a second thermal expansion coefficient; and sealing the first and second substrates using a sealant, wherein the first thermal expansion coefficient is larger than the thermal expansion coefficient of the first substrate and the second thermal expansion coefficient is less than the thermal expansion coefficient of the second substrate to cancel of the thermal expansion coefficient between the first substrate and the second substrate.