Patent ID: 8368056

Claim:
An organic light emitting diode display comprising: a display substrate including organic light emitting diodes and a pixel defining layer having openings for defining respective light emitting regions of the organic light emitting diodes; an encapsulation substrate disposed to face the display substrate; a sealant disposed along edges of the encapsulation substrate and the display substrate, the sealant bonding and sealing the display substrate and the encapsulation substrate together; and a filling material filling vacant spaces between the display substrate and the encapsulation substrate, the pixel defining layer being divided into a plurality of deposit regions having a relatively small height and uniformly distributed, and a diffusion region surrounding the plurality of deposit regions and having a larger height than that of the plurality of deposit regions, the deposit regions receiving the filling material prior to diffusion of the filling material for filling the vacant spaces, the diffusion regions suppressing flow of the filling material during the diffusion, the filling material filling all empty spaces between the display substrate and the encapsulation substrate following the diffusion.