Organic light emitting display device

1. An organic light emitting display device, comprising:

at least two light emitting parts, each having a light emitting layer, a hole transport layer and an electron transport layer, where the light emitting layers may be the same or different, the hole transport layers may be the same or different and the electron transport layers may be the same or different; and

a charge generation layer between the light emitting parts, where the charge generation layer comprises a N-type charge generation layer and a P-type charge generation layer,

wherein at least one among the charge generation layer and the electron transport layer includes a compound of Formula 1

where Ar 1 is

Ar 3 is

or a bond;

L 1 is

or a bond;

L 2 is

or a bond;

L 3 is

or a bond;

and Ar 2 is

or a bond,

wherein at least two of Ar 2 , Ar 3 , L 1 , L 2 and L 3 are not a bond.

2. The organic light emitting display device of claim 1 , wherein one of the at least two light emitting parts includes a blue light emitting part, and the other includes a yellow-green light emitting part.

3. The organic light emitting display device of claim 2 , wherein the yellow-green light emitting part includes the electron transport layer.

4. The organic light emitting display device of claim 1 , wherein the compound represented by Formula 1 includes any one of the compounds shown in the following table:

Ar 1

Ar 3

L 1

L2

L 3

Ar 2

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5. The organic light emitting display device of claim 1 , wherein the compound represented by Formula 1 is one of the following compounds:

6. The organic light emitting display device of claim 1 wherein the electron transport layer includes one of the following compounds:

7. The organic light emitting display device of claim 1 , wherein the charge generation layer includes one of the following compounds:

8. The organic light emitting display device of claim 1 , wherein the N-type charge generation layer includes the compound.

9. The organic light emitting display device of claim 1 , further comprising:

a third light emitting part on the at least two light emitting parts, the third light emitting part having a third light emitting layer and a third electron transport layer; and

a second charge generation layer between the at least two light emitting parts and the third light emitting part,

wherein at least one among the charge generation layer, the electron transport layer, the third electron transport layer, and the second charge generation layer includes the compound.

10. The organic light emitting display device of claim 9 , wherein the second charge generation layer includes a second N-type charge generation layer and a second P-type generation layer, and the N-type generation layer includes the compound.

11. The organic light emitting display device of claim 9 , wherein the third light emitting part includes a blue light emitting part.