Organic light emitting display device

An organic light emitting display device comprising:

• a first emission part between a first electrode and a second electrode, the first emission part including a first organic layer;
• a second emission part on the first emission part, the second emission part including a second organic layer;
• a third emission part on the second emission part, the third emission part including a third organic layer;
• a first charge generation layer and a second charge generation layer between the first emission part and the second emission part;
• and
• a third charge generation layer and a fourth charge generation layer between the second emission part and the third emission part,
• wherein
• a first thickness comprises the first emission part and the first charge generation layer,
• a second thickness comprises the second emission part and the second charge generation layer, and
• the first thickness is equal to or greater than the second thickness.

An organic light emitting display device comprising:

• a first emission part between a first electrode and a second electrode, the first emission part including a first organic layer;
• a second emission part on the first emission part, the second emission part including a second organic layer;
• a third emission part on the second emission part, the third emission part including a third organic layer;
• a first charge generation layer and a second charge generation layer between the first emission part and the second emission part;
• and
• a third charge generation layer and a fourth charge generation layer between the second emission part and the third emission part,
• wherein
• a first thickness comprises the first emission part and the first charge generation layer,
• a second thickness comprises the second emission part and the second charge generation layer, and
• the organic light emitting display device has an adjusted thickness of emission parts (ATEP) structure.