Organic light emitting diode and organic light emitting display device using the same

An organic light emitting display apparatus, comprising:

• a first electrode;
• a second electrode;
• and
• an organic layer between the first electrode and the second electrode to emit white light,
• wherein the organic layer includes a first light-emitting portion, a second light-emitting portion, and a third light-emitting portion,
• wherein the organic layer is configured to emit white light having an X-axis coordinate value and a Y-axis coordinate value in a color coordinate system, and
• wherein the second light-emitting portion includes a lower light-emitting layer and an upper light-emitting layer, a concentration of a dopant of the lower light-emitting layer being greater than a concentration of a dopant of the upper light-emitting layer.

An organic light emitting display apparatus, comprising:

• a first electrode;
• a second electrode;
• a first light-emitting portion on the first electrode, the first light-emitting portion including a first light-emitting layer;
• a second light-emitting portion on the first light-emitting portion, the second light-emitting
• portion including a second light-emitting layer;
• and
• a third light-emitting portion on the second light-emitting portion, the third light-emitting portion including a third light-emitting layer,
• wherein the second light-emitting layer includes a first area and a second area, and a first distance from a top surface of the first electrode to the first area is equal to or less than a second distance from a bottom surface of the second electrode to the second area, and
• wherein the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion is configured to emit white light having an X-axis coordinate value and a Y-axis coordinate value in the color coordinate system, and
• wherein a range of fluctuation of the X-axis coordinate value at each pixel position and a range of fluctuation of the Y-axis coordinate value at each pixel position are equal to or less than 0.015.