Patent ID: 8106392

Claim:
A light-emitting device comprising: a first electrode; a second electrode; at least a first light-emitting unit and a second light-emitting unit between the first electrode and the second electrode; and a charge generation layer including a composite material of an organic compound and an oxide of a transition metal between the first light-emitting unit and the second light-emitting unit, wherein at least one of the first light-emitting unit and the second light-emitting unit comprises an anthracene derivative, wherein the anthracene derivative is represented by the structure: wherein Ar 1 and Ar 2 each represent an aryl group having 6 to 25 carbon atoms, and wherein A is selected from: Ar 11 to Ar 13 each represent an aryl group having 6 to 25 carbon atoms; α represents an arylene group having 6 to 25 carbon atoms; Ar 21 represents an aryl group having 6 to 25 carbon atoms; R 31 represents any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 25 carbon atoms; R 32 represents an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms; Ar 31 represents an aryl group having 6 to 25 carbon atoms; β represents an arylene group having 6 to 25 carbon atoms; and R 41 and R 42 each represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 25 carbon atoms.