Patent ID: 6989201

Claim:
A thin film EL device comprising at least: a hole-injecting electrode; an electron-injecting electrode opposed to said hole-injecting electrode; and a luminescent layer sandwiched between said hole-injecting electrode and said electron-injecting electrode, said luminescent layer containing a compound represented by the following general formula (1): where Ar1 and Ar2 are the same or different, and each independently represents a substituted or unsubstituted aryl group; Ar3 represents a phenylene group; X represents a group of the following general formula (2): where R 1 and R 2 are the same or different, and each independently represents a hydrogen atom or an alkyl group; and Y represents a substituted aryl group having an electron-donating substituent that, prior to substitution with the electron-donating substituent, has five or more conjugated bonds.