Patent ID: 8802246

Claim:
An organic light emitting device, comprising: a pair of electrodes; and an organic layer comprising a light emitting polymer between the pair of electrodes, the light emitting polymer comprising a phosphorescence unit and a fluorescence unit, the light emitting polymer represented by Formula 1: wherein X 1 and X 2 are each independently N or C, and at least one of X 1 and X 2 is N; M is a bivalent to tetravalent metal atom; a and b are each a real number of 0.01 to 0.99, c is a real number of 0 to 0.99, and a+b+c=1; t is 1 or 2; and L has at least one structure selected from the group consisting of structures represented by Formulae 3A through 3X: wherein Z is S, O or NT 8 ; T 1 , T 2 , T 3 , T 4 , T 5 , T 6 , T 7 and T 8 are each independently a hydrogen atom, a halogen atom, —CF 3 , —CN, —Si(A 1 )(A 2 )(A 3 ), a substituted or unsubstituted C 1 -C 12 alkyl group, a substituted or unsubstituted C 2 -C 12 alkenyl group, a substituted or unsubstituted C 6 -C 20 aryl group, a substituted or unsubstituted C 1 -C 12 alkoxy group, a substituted or unsubstituted C 6 -C 20 aryloxy group or an amino group, and alternatively, at least two of T 1 , T 2 , T 3 , T 4 , T 5 , T 6 , T 7 and T 8 can be fused to form a 5 to 7 membered aliphatic or aromatic ring; A 1 , A 2 and A 3 are each independently a hydrogen atom, a substituted or unsubstituted C 1 -C 12 alkyl group, a substituted or unsubstituted C 2 -C 12 alkenyl group or a substituted or unsubstituted C 1 -C 12 alkoxy group; and * is a site at which M is bonded; and Ar 1 in Formula 1 is a fluorescence unit and has independently at least one structure selected from the group consisting of structures represented by Formulae 5C through 5M, Formulae 5O and 5P, Formula 5S, and Ar 2 is a fluorescence unit and is represented by Formula 6: wherein R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, a substituted or unsubstituted C 1 -C 12 alkyl group, a substituted or unsubstituted C 1 -C 12 alkoxy group, or a substituted or unsubstituted C 6 -C 20 aryl group; X 5 is O, S, wherein Q 1 , Q 2 , Q 3 , Q 4 , Q 5 and Q 6 are each independently a hydrogen atom, a substituted or unsubstituted C 1 -C 20 alkyl group or a C 1 -C 20 alkoxy group; Y is a substituted or unsubstituted C 6 -C 20 arylene group; and R is a hydrogen atom, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 3 -C 30 cycloalkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or a substituted or unsubstituted C 6 -C 30 heteroaryl group.