Morgan, Lewis & Bockius LLP
Red phosphorescent compounds and organic electroluminescent devices using the same
Disclosed herein are red phosphorescent compoundsof the following one of Formulas 1 to 3    R1 and R2 are independently a C1-C4 alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups,    R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups and C1-C4 alkoxy groups,    R1, R2, R3 and R4 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and    is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.
LG Display Co., Ltd.
H C C C C C C C
H05B C09K C09K C09K C09K C07F C09K C09K
inventional additional inventional additional additional inventional additional additional
Chun Gun Jung Keun Jeong Dae Sung Hoon Kyung Hoon Jong Kwan Hyun Cheol
Park Kim Seo Pieh Lee Bin Jeong