Patent ID: 7910919

Claim:
An organic light emitting display comprising: a substrate having a display region and a non-display region; a buffer layer formed on the display region and the non-display region in which a catalytic metal is present; an alignment mark formed on one of the buffer layer and the substrate in the non-display region of the substrate; an active layer formed by an SGS crystallization method on the buffer layer corresponding to the display region of the substrate; a gate insulating layer formed on the alignment mark and the active layer; a gate electrode formed on the gate insulating layer corresponding to the active layer; an interlayer dielectric layer formed on the gate insulating layer; a source/drain electrode formed on the interlayer dielectric layer and electrically coupled to the active layer; an insulating layer formed on the source/drain electrode; and an organic light emitting diode formed on the insulating layer and electrically coupled to the source/drain electrode, wherein the active layer is formed at a predetermined distance from the alignment mark, wherein the catalytic metal is present in the alignment mark and the active layer, and wherein the volume density of the catalytic metal present in the alignment mark and the active layer is 1.0×10 16 to 1.0×10 20 atoms/cm 3 .