Patent ID: 6818324
Filing Date: 2004-11-16
Classification: C09K,H01L,H05B,Y10S,Y10T

Abstract:
An organic thin-film EL device comprising an organic thin-film layer contiguous to the surface of a cathode opposite to an anode, wherein said organic thin-film layer is a charge injection transport layer and contains an organic compound represented by the following formula (I): wherein R1 to R6 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group or a cyano group; L represents a group â€”OR7 in which R7 represents an alkyl group, a cycloalkyl group, an aromatic group which may contain a nitrogen atom with a proviso that an unsubstituted phenyl group is excluded, an aromatic group having a bonding group composed of a metal atom or an oxygen atom or a ligand of an oxinoid compound having said bonding group; M represents a metal atom except for aluminum; and n stands for an integer of 1 or 2, and said cathode comprising aluminum as a main component and lithium in an amount of 0.05 to 1.5 wt. %, having a thickness of 1 to 50 nm and having a cathode protective layer thereon.