US Patent 7759864 Organic electroluminescent display device comprising moisture preventing sealing structure

An organic electroluminescent display (OELD) device includes first and second substrates facing each other and having a display region and a non-display region on a periphery of the display region, an organic electroluminescent diode in the display region of the first substrate, a protrusion formed with a first thickness and a first width in the non-display region of the first substrate, a groove formed with a first depth and a second width in the non-display region of the second substrate, wherein the protrusion is inserted into the groove, a seal pattern formed between the protrusion and the groove.