Organic light-emitting devices

#1. Field of the Invention

#The present invention relates to organic light-emitting devices. More particularly, this invention provides highly luminance-efficient and bright organic light-emitting devices, and organic light-emitting devices with adjustable emission zone.

#2. Description of the Related Arts

#The invention is better understood from the following detailed description when it is read with the accompanying drawings.

#FIG. 1 is a schematic graph of the structure of the OLEDs according to the present invention (including optional buffer layer and transitional layer therein).

#Each of FIG. 2 and FIG. 3 is a schematic graph of energy level of the OLEDs having the structure configurations of Glass/ITO/CuPc/(NPB/CuPc)n/NPB/Alq3/Mg:Ag/Ag. FIG. 3 also shows the distribution of carriers in the MQW devices.

#The present invention will be illustrated in greater detail by exemplary embodiments thereof in the light of the accompanying drawings and detailed description, but the invention is not construed as being limited thereto.

#For simplifying expression, some materials used in this invention are abbreviated literally. The abbreviation, whole name, and corresponding molecular structure of the organic materials of present invention are shown in the below table 1. 1 TABLE 1 Abbreviation Whole name Molecular structure Alq3 tris(8-hydroxyquinoline) aluminum 1 Al(Saph-q) salicylidene-o-aminophenolato (8-quinolinoato)aluminum 2 BCP 2,9-dimethyl-4,7-diphenyl- 1,10-phenanthroline 3 Bphen 4,7-diphenyl-1,10-phenan- throline 4 C545T 10-(2-benzothiazolyl)-1,1,7,7- tetramethyl-2,3,6,7- tetrahydro-1H,5H,11H- [l]benzopyrano[6,7,8- ij]quinolizin-11-one 5 CuPc phthalocyanine copper 6 DCJTB 4-(dicyanomethylene)-2-(t- butyl)-6-(1,1,7,7- tetramethyljulolidyl-9-enyl)- 4H-pyran 7 DCM 4-(dicyanomethylene)-2- methyl-6-(p- dimethylaminostyryl)-4H- pyran 8 Ga(Saph-q) salicylidene-o-aminophenolato (8-quinolinoato)gallium 9 H2Pc Phthalocyanine 10 MTDATA 4,4′,4″-tris(3-methyl- phenylphenylamino) triphenylamine 11 NPB N,N′-bis-(1-naphthyl)-N, N′-diphenyl-1,1′-biphenyl-4, 4′-diamine 12 PANI Polyaniline 13 PBD 2-(4-tert-Butylphenyl)-5-(4- biphenylyl)-1,3,4-oxadiazole 14 PEDOT Polyethylene dioxythiophene 15 pentacene pentacene 16 PVK Poly(N-vinylcarbazole) 17 rubrene 5,6,11,12- tetraphenylnaphthacene 18 TPBi 2,2′2″-(1,3,5-benzenetriyl)- tris-[1-phenyl-1H- benzimidazole] 19 TPD N,N′-diphenyl-N,N′-bis(3- methylphenyl)-1,1′- biphenyl-4,4′-diamine 20 VOPc Phthalocyanine vanadium 21 Zn(Ac)2 4-hydroxyl acridine zinc 22

#In order to understand the present invention more clearly, some notes are listed below.