Signal control unit for an organic light emitting diode display device, method of manufacturing the same, and organic light emitting diode display device including the same

A method of manufacturing a signal control unit for an organic light emitting diode (OLED) display device, the method comprising:

• preparing a substrate structure including a plurality of active elements each corresponding to a pixel;
• forming a lower metal pattern on the substrate structure, the lower metal pattern being adapted to be electrically connected to at least one of the plurality of active elements;
• forming an insulating interlayer on the substrate structure to cover the lower metal pattern;
• forming a via contact penetrating through the insulating interlayer, the via contact being connected to the lower metal pattern;
• and
• forming a metal electrode on the insulating interlayer and connected to the via contact;
• forming an electrode passivation layer pattern covering a peripheral portion of an upper surface and a side surface of the metal electrodes to expose a center portion of the upper surface of the metal electrode such that leakage current which flows through the side surface of the metal electrodes is suppressed.

An organic light emitting diode (OLED) display device, comprising:

• a signal control unit including a substrate structure including a plurality of active elements for pixels, a lower metal pattern disposed on the substrate structure, and electrically connected to a portion of at least one of the plurality of active elements, an insulating interlayer disposed on the substrate structure to cover the lower metal pattern, a via contact penetrating through the insulating interlayer to be connected to the lower metal pattern, a metal electrode disposed on the insulating interlayer, and connected to the via contact and an electrode passivation layer pattern covering a peripheral portion of an upper surface and the side surface of the metal electrode to expose a center portion of the upper surface of the metal electrode such that leakage current which flows through the side surface of the metal electrode is suppressed;
• an organic light emitting unit disposed over the signal control unit, the organic light emitting unit including a plurality of light emitting regions for each of pixels;
• and
• a protection unit entirely covering the organic light emitting unit, the protection unit including a color filter layer.