Patent ID: 7906224

Claim:
An organic electroluminescent element comprising a cathode and an anode having therebetween at least one organic compound layer, wherein one of the organic compound layer comprises a polymer having one of repeat units represented by Formula (2): wherein Ar 2 represents a phenylene group which may have a substituent or a biphenylene group which may have a substituent; L 2 represents a linkage group selected from Group 2; and L 3 represents a single bond or a linkage group selected from Group 3; X represents a group represented by Formula (3) or (9); and n 2 represents an integer of not less than two: wherein R 3 , R 4 , R 10 and R 11 each represent a phenyl group, wherein R 14 -R 21 each independently represent a hydrogen atom, an alkyl group or a cycloalkyl group, provided that adjacent groups of R 14 -R 21 may be joined to form a ring, wherein Z 1 and Z 2 each represent a 6-membered aromatic ring comprising a group of atoms selected from the group of carbon, hydrogen and nitrogen, provided that Z 1 and Z 2 may be different.