Patent ID: 6753098
Filing Date: 2004-06-22
Classification: C09K,H01L,H05B,Y10S,Y10T

Abstract:
An organic light emitting device comprising(i) a first electrode; (ii) a region comprising a mixture of (1) N,Nâ€²-bis(p-biphenyl)-N,Nâ€²-diphenyl benzidine, and (2) an electron transport material, and which region further optionally comprises an organic luminescent material, and wherein said mixed region is capable of emitting light in response to hole-electron recombination; (iii) a second electrode; (iv) a thermal layer coated on at least one of the first and second electrodes, wherein one of said first and second electrodes is a hole injection anode, and one of said electrodes is an electron injection cathode, and wherein the organic light emitting device further comprises at least one of (v) a hole transport region interposed or situated between the first electrode and the mixed region; or (vi) an electron transport region interposed or situated between the mixed region and the cathode.