An organic light-emitting diode (OLED) display and method of manufacturing the same are disclosed. In one aspect, the OLED display includes a first substrate including a display area, a display unit formed in the display area and including an insulating layer, and a second substrate formed over the display layer. A sealant material is interposed between the first and second substrates and substantially seals the first and second substrates to each other. At least one hole is formed in a first portion of the insulating layer and at least one recess is formed in a second portion of the insulating layer. The sealant is substantially filled in the hole and the recess.