Lg Display Co., Ltd.

Jong Kwan Bin

Jung Keun Kim

Chun Gun Park

Hyun Cheol Jeong

Jeong Dae Seo

Sung Hoon Pieh

Kyung Hoon Lee

Jeongdae Seo

Nam Sung Cho

In Bum Song

Chungun Park

Do Han Kim

Bang Sook Lee

Yong Kwan Kim

Young Ju Ryu

Hvun Cheol Jeong

Suk Young Bae

A host material is disclosed. The host material, as a compound which is represented by the following formula 1, has a chemical structure in which nitrogen and silicon atoms are chemically and directly bonded to each other. Wherein the 'a' is one selected from a material group which includes N, S, O, SOand NSiGGG, and the 'G1, G2 and G3' each become one of a hydrogen, and aromatic, heterocyclic and aliphatic groups which are or not substituted, respectively.

Host material and organic light emitting display device using the same

Disclosed herein are red phosphorescent compounds of the following formula:   

Red phosphorescent compounds and organic electroluminescent devices using the same

The invention relates to a red phosphorescent compound represented by the following Formula (1) and an organic electroluminescent (EL) device using the same: wherein 

Red phosphorescent compound and organic electroluminescent device using the same

Disclosed is an organic electroluminescent device comprising a structure having an anode, an emitting layer, and a cathode stacked therein, wherein a fluorescent compound represented by Formula 1 is used as a emitting material of the emitting layer or used as a dopant of the emitting layer:  wherein Aand Aare independently selected from a substituted or unsubstituted C-Caliphatic group, a C-Caromatic group and a C-Cheterocyclic group containing N, S or O, Ais selected from a substituted or unsubstituted C-Caliphatic group, a C-Caromatic group, a C-Cheterocyclic group containing N, S or O, and a hydrogen atom, and substituents of A, Aand Aare respectively one or more and the substituent is selected from the group consisting of C-Calkyl, C-Calkoxy, C-Calkylamino, C-Calkylsilyl, a halogen atom, C-Caryl, C-Caryloxy, C-Carylamino, C-Carylsilyl and a hydrogen atom.

Organic electroluminescence device

A red phosphorescent compound of Formula I:   and R1, R2, R3, R4 and R5 are as defined in the specification.

Disclosed herein is a red phosphorescent compound of the following Formula 1:  is includes a phenyl part and a quinoline part, the quinoline part has one substituent selected from a C-Calkoxy group and the phenyl part has substituents independently selected from hydrogen, C-Calkyl groups and C-Calkoxy 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.

Disclosed herein are red phosphorescent compounds of the following one of Formulas 1 to 3  R1 and R2 are independently a C-Calkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C-Calkyl groups and C-Calkoxy groups, R1, R2, R3 and R4 are independently selected from C-Calkyl groups and C-Calkoxy groups, R1, R2, R3 and R4 are independently selected from hydrogen, C-Calkyl groups and C-Calkoxy 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.

An organic light emitting device having a pyrene based electron transport compound and an electron injecting and transport layer comprising the electron transport compound is provided.

Growing community of inventors

Gyeonggi-do, South Korea

Jong Kwan Bin