ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE AND METHOD OF MANUFACTURING SAME

Provided is an organic light-emitting diode (OLED) display device. The OLED display device includes a substrate in which a pixel area and a non-pixel area are defined, a power line formed on the substrate, a buffering film covering the power line, an active interconnection line formed on the buffering film,an auxiliary interconnection line extending through the buffering film and connecting one end of the active interconnection line to the auxiliary electrode; a first passivation film covering the auxiliary interconnection line and having a contact hole formed through the first passivation film, an undercut structure being formed in the contact hole such that the active interconnection line is exposed through the undercut structure; and a light-emitting element including a first electrode, an emissive layer, and a second electrode that are sequentially stacked, wherein the second electrode extends into the non-pixel region such that the second electrode is connected to a portion of the active interconnect lin