Rohm and Haas Electronic Materials Korea Ltd.

Dupont Specialty Materials Korea Ltd.

Jae-Hoon Shim

Chi-Sik Kim

Young-Jun Cho

Kyung-Hoon Choi

Kyoung-Jin Park

Doo-Hyeon Moon

Su-Hyun Lee

Ji-Song Jun

Hong-Yeop Na

Tae-Jin Lee

Sang-Hee Cho

Bitnari Kim

Jeong-Eun Yang

Hee-Choon Ahn

Young-Kwang Kim

Seon-Woo Lee

Kyung-Joo Lee

Nam-Kyun Kim

Hee-Ryong Kang

Jin-Ri Hong

Young-Mook Lim

Hyun-Ju Kang

Jeong-Hwan Jeon

Hyo-Jung Lee

Yoo-Jin Doh

Hong-Yoep Na

Yoo Jin Doh

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 device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Organic electroluminescent device

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 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 high efficiency and long lifespan.

Plurality of host materials and an organic electroluminescence 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.

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Seoul, South Korea

Jae-Hoon Shim