Organic light emitting diode display device

An organic light emitting diode display device, comprising:

• a substrate including a red pixel region, a green pixel region, and a blue pixel region;
• a driving thin film transistor, a first electrode, and a light emitting diode each of which are provided in each of the red pixel region, the green pixel region, and the blue pixel region;
• a second electrode common to each of the red, green, and blue pixel regions;
• and
• a cholesteric liquid crystal (CLC) layer having an infrared radiation (IR) wavelength in a transmission direction of light emitted from the light emitting diodes,
• wherein the IR wavelength is in a range of approximately 800 nm to 1,100 nm, and the CLC layer has a reflection wavelength of approximately 400 nm to 700 nm at a viewing angle of approximately 40° to 60°,
• wherein the light emitting diode in the red pixel region has a first thickness,
• wherein the light emitting diode in the green pixel region has a second thickness,
• wherein the light emitting diode in the blue pixel region has a third thickness,
• wherein the first to third thicknesses are different from one another,
• wherein each of the first to third thicknesses is a distance between the first electrode of the red, green, and blue pixel regions respectively and the second electrode of the light emitting diode in each of the red, green and blue pixel regions, and
• wherein each first electrode is formed to have different thicknesses which differ for each of the red, green, and blue pixel regions.