Rohm and Haas Electronic Materials Korea Ltd.

Dupont Specialty Materials Korea Ltd.

Young-Jun Cho

Jae-Hoon Shim

Kyung-Hoon Choi

Su-Hyun Lee

Chi-Sik Kim

Doo-Hyeon Moon

Sang-Hee Cho

Kyoung-Jin Park

Nam-Kyun Kim

Ji-Song Jun

Hong-Yeop Na

Kyung-Joo Lee

Bitnari Kim

Hee-Choon Ahn

Jeong-Hwan Jeon

Seon-Woo Lee

Young-Kwang Kim

Bong-Ok Kim

Tae-Jin Lee

Hyun Joo Kim

Hee-Ryong Kang

Jin-Ri Hong

Jeong-Eun Yang

Young-Mook Lim

Hyun-Ju Kang

So-Young Jung

Hyo-Soon Park

Hyuck Joo Kwon

Hyo-Jung Lee

Tae-Jun Han

Yeon-Gun Lee

Yoo-Jin Doh

Seon-Jin Hwang

Hyo-Nim Shin

Kyung Joo Lee

Seok Keun Yoon

Hee Sook Kim

Hee-Sook Kim

Seok-Keun Yoon

Hong-Yoep Na

Hyuck-Joo Kwon

The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.

Multi-component host material and an organic electroluminescence device comprising the same

The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, the organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared with the conventional device using one component host compound.

Multi-component host material and organic electroluminescent device comprising the same

The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having lower operating voltage, higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.

Organic electroluminescent compound and organic electroluminescent device comprising the same

The present disclosure relates to a plurality of host materials and organic electroluminescent devices comprising the same. The present disclosure may provide a plurality of host materials having a composition favorable to thermal denaturation due to a low deposition temperature, while improving hole properties and electronic properties of HOMO and LUMO, by comprising separate compounds represented by formulas 1 and 2 into a light-emitting layer. By comprising the plurality of host materials of the present disclosure, it is possible to provide an organic electroluminescent device having a lower driving voltage, higher luminous efficiency and/or longer lifetime.

Plurality of host materials and organic electroluminescent device comprising the same

The present invention relates to an electron buffering material and an organic electroluminescent device comprising the same in an electron buffer layer. It is possible to provide an organic electroluminescent device having excellent luminous efficiency and lifespan characteristics by using the electron buffering material according to the present invention.

Electron buffering material and organic electroluminescent device comprising the same

The present invention relates to an electron transport material and an organic electroluminescent device comprising the material in an electron transport layer. The compounds according to the present invention as an organic electron transport material have faster electron transport property compared to a conventional electron transport material. Thus, a device comprising the compounds according to the present invention shows low driving voltage, high efficiency, and excellent lifespan property. Furthermore, the electron transport compounds have excellent color coordinate, and thus are effective in blue light-emitting.

Electron transport material and organic electroluminescent device comprising the same

The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides excellent lifespan characteristics while maintaining high luminous efficiency.

Plurality of host materials and an organic electroluminescence device comprising the same

The present invention relates to a novel organic electroluminescent compound, layer and an organic electroluminescent device using the same. Said organic luminescent compound provides an organic light emitting layer and/or device which has high luminous efficiency and a long operation lifetime and requires a low driving voltage improving power efficiency and power consumption.

Organic electroluminescent compounds, layers and organic electroluminescent device using the same

The present invention relates to electroluminescent compounds of formula 1 where A and/or B represent fluorene, carbazole, dibenzo[b,d]thiophene or dibenzo[b,d]furan derivatives and L, X, Ar, Ar, R, Rand Rare as defined herein, and organic electroluminescent devices comprising the same. The compounds according to the present invention have an advantage in manufacturing an organic electroluminescent device which has a high luminous efficiency and a long operational lifetime.

Compounds for organic electronic material and organic electroluminescent device using the same

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Seongnam, South Korea

Young-Jun Cho