Organic light-emitting display device and method of manufacturing the same

A method of manufacturing an organic light-emitting display device, the method comprising:

• forming a plurality of thin film transistors (TFTs) on a substrate;
• and
• forming a plurality of organic light emitting diodes (OLEDs), each of the OLEDs comprising a first electrode having a portion exposed by a pixel defining layer (PDL) on the TFTs, an organic layer on the exposed portion of the first electrode and comprising an emission layer (EML) configured to emit light having at least one of a plurality of colors, and a second electrode on the organic layer,
• wherein the EML is formed in each of a sub-pixel region with one color and other subpixel regions with other colors, the sub-pixel regions being formed by forming openings in the PDL,
• wherein a solution supply unit that communicates with the sub-pixel region with one color is formed in the sub-pixel region with one color,
• wherein emission layer raw materials for the plurality of colors are supplied to the subpixel region with one color and the other sub-pixel regions with other colors via the solution supply unit, whereby the EML is formed,
• wherein at least one of the emission layer raw materials is sprayed into the solution supply unit via a nozzle unit having a power applied thereto,
• wherein the at least one of the emission layer raw materials moves to the sub-pixel region that communicates with the solution supply unit, whereby the EML is formed,
• wherein the EML is formed by charging the at least one of the emission layer raw materials comprising a liquid emission layer raw material,
• wherein droplets are formed by spraying the charged liquid emission layer raw material via the nozzle unit, and then forming the EML via the solution supply unit,
• wherein the EML comprises a first-color emission layer, a second-color emission layer, and a third-color emission layer,
• wherein the first-color emission layer is formed in a first sub-pixel region of the sub-pixel regions, and the first sub-pixel region communicates with a first sub-pixel region solution supply unit,
• wherein, the second-color emission layer is formed in a second sub-pixel region of the sub-pixel regions, and the second sub-pixel region communicates with a second sub-pixel region solution supply unit,
• wherein the third-color emission layer is formed in a third sub-pixel region of the subpixel regions, and
• wherein a first-color emission layer raw material and a second-color emission layer raw material, from among the emission layer raw materials, that are in a liquid state and are charged are sprayed via the first sub-pixel region solution supply unit and the second sub-pixel region solution supply unit, respectively, move to the first sub-pixel region and the second sub-pixel region, respectively, due to a repulsive force, and then form the first-color emission layer and the second-color emission layer, respectively.