Organic electroluminescent compound and organic electroluminescent device comprising the same

1. An organic electroluminescent compound represented by the following formula 1:

wherein

Ar 1 and Ar 2 each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (5- to 30-membered)heteroaryl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, or a substituted or unsubstituted (C3-C30)cycloalkyl;

Ar 3 and Ar a each independently represent hydrogen, deuterium, a halogen, a cyano, —NR 11 R 12 , a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (5- to 30-membered)heteroaryl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, or a substituted or unsubstituted (C3-C30)cycloalkyl; and at least one of two Ar 3 's and two Ar 4 's are linked to each other to form a fused ring of

in which * represents a bonding site of Ar 3 or Ar 4 ;

R 11 and R 12 each independently represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (5- to 30-membered)heteroaryl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, or a substituted or unsubstituted (C3-C30)cycloalkyl;

L 1 represents a single bond, or a substituted or unsubstituted (C6-C30)arylene;

Ar 5 represents hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl;

Ar 6 represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl;

the heteroaryl contains at least one heteroatom selected from B, N, O, S, Si, and P;

a and b each independently represent an integer of 1 to 5, and c to e each independently represent an integer of 1 to 4;

where a to e is an integer of 2 or more, each Ar 1 , each Ar 2 , each Ar 3 , each Ar 4 , and each Ar 5 may be the same or different.

2. The organic electroluminescent compound according to claim 1 , wherein the substituents of the substituted (C1-C30)alkyl, the substituted (C6-C30)aryl(ene), the substituted (5- to 30-membered)heteroaryl, the substituted (3- to 7-membered)heterocycloalkyl, and the substituted (C3-C30)cycloalkyl in Ar 1 to Ar 6 , and L 1 each independently are at least one selected from the group consisting of deuterium; a halogen; a cyano; a carboxyl; a nitro; a hydroxyl; a (C1-C30)alkyl; a halo(C1-C30)alkyl; a (C2-C30)alkenyl; a (C2-C30)alkynyl; a (C1-C30)alkoxy; a (C1-C30)alkylthio; a (C3-C30)cycloalkyl; a (C3-C30)cycloalkenyl; a (3- to 7-membered)heterocycloalkyl; a (C6-C30)aryloxy; a (C6-C30)arylthio; a (5- to 30-membered)heteroaryl unsubstituted or substituted with a (C6-C30)aryl(s); a (C6-C30)aryl unsubstituted or substituted with a (5- to 30-membered)heteroaryl(s); a tri(C1-C30)alkylsilyl, a tri(C6-C30)arylsilyl; a di(C1-C30)alkyl(C6-C30)arylsilyl; a (C1-C30)alkyldi(C6-C30)arylsilyl; an amino; a mono- or di-(C1-C30)alkylamino; a mono- or di-(C6-C30)arylamino unsubstituted or substituted with a (C1-C30)alkyl(s); a (C1-C30)alkyl(C6-C30)arylamino; a (C1-C30)alkylcarbonyl; a (C1-C30)alkoxycarbonyl; a (C6-C30)arylcarbonyl; a di(C6-C30)arylboronyl; a di(C1-C30)alkylboronyl; a (C1-C30)alkyl(C6-C30)arylboronyl; a (C6-C30)aryl(C1-C30)alkyl; and a (C1-C30)alkyl(C6-C30)aryl.

3. The organic electroluminescent compound according to claim 1 , wherein formula 1 is represented by any one of the following formulas 2 and 3:

wherein

Ar 1 to Ar 6 , L 1 , and a to e are as defined in claim 1 .

4. The organic electroluminescent compound according to claim 1 , wherein

Ar 1 and Ar 2 each independently represent hydrogen, a substituted or unsubstituted (C6-C20)aryl, or a substituted or unsubstituted (5- to 20-membered)heteroaryl;

Ar 3 and Ar 4 each independently represent hydrogen, a halogen, —NR 11 R 12 , a substituted or unsubstituted (C6-C20)aryl, or a substituted or unsubstituted (5- to 20-membered)heteroaryl; and at least one of two Ar 3 's and two Ar 4 's are linked to each other to form a fused ring of

L 1 represents a single bond;

R 11 and R 12 each independently represent hydrogen, a substituted or unsubstituted (C6-C20)aryl, or a substituted or unsubstituted (5- to 20-membered)heteroaryl;

Ar 5 represents hydrogen, or a substituted or unsubstituted (C6-C20)aryl; and

Ar 6 represents a substituted or unsubstituted (C6-C20)aryl, or a substituted or unsubstituted (5- to 20-membered)heteroaryl.

5. The organic electroluminescent compound according to claim 1 , wherein

Ar 1 and Ar 2 each independently represent hydrogen, an unsubstituted (C6-C20)aryl, or a (5- to 20-membered)heteroaryl substituted with a (C6-C12)aryl(s);

Ar 3 and Ar 4 each independently represent hydrogen, a (C6-C20)aryl unsubstituted or substituted with a nitro(s), or a (5- to 20-membered)heteroaryl unsubstituted or substituted with a (C6-C12)aryl(s); and at least one of two Ar 3 's and two Ar 4 's are linked to each other to form a fused ring of

L 1 represents a single bond;

Ar 5 represents hydrogen, or an unsubstituted (C6-C20)aryl; and

Ar 6 represents an unsubstituted (C6-C20)aryl, or a (5- to 20-membered)heteroaryl unsubstituted or substituted with a (C6-C12)aryl(s).

6. The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 1 is at least one selected from the group consisting of:

7. An organic electroluminescent material comprising the organic electroluminescent compound according to claim 1 .

8. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .

9. A display device comprising the organic electroluminescent compound according to claim 1 .