Lg Display Co., Ltd.

Lg Chem, Ltd

Display Co., Ltd.

Jungkeun Kim

Dohan Kim

Hyoseok Kim

Jeongdae Seo

Wanpyo Hong

Seunghee Yoon

Hyeseung Kang

Heungwoo Choi

Min Ro Yun

Seonkeun Yoo

Sunghoon Joo

Byungsoo Kim

Ki-Woog Song

JungSoo Park

ChangWook Han

Seongsu Jeon

Jicheol Shin

EunJung Park

SeungRyong Joung

Hyounsoo Uh

Jun Yeob Lee

Jungsoo Park

Yoonheung Tak

Joo Yong Yoon

Hanbyeol Seok

Taewoo Jeon

Joon Shik Yoon

YoonHeung Tak

Wan Hong

Kyosung Park

Seungryong Joung

Seunkeun Yoo

An organic electroluminescence device including an anode, a cathode and a light-emission layer. The light-emission layer includes a stack of a blue light-emission layer and a red/green light concurrent-emission sub-stack. Further, the red/green light concurrent-emission sub-stack includes a stack of a red light-emission layer and a green light-emission layer. The red light-emission layer contains a red host compound including an arylamino group-substituted spirobisfluorene compound. Further, the green light-emission layer contains a green host compound including a mixture between a first green host compound and a second green host compound. Also, the first green host compound includes a bis-carbazole based compound, and the second green host compound includes a carbazole-based compound.

Organic electroluminescence device

An organic light emitting display device is provided. The organic light emitting display device may include at least one light emitting part between al anode and a cathode, and the at least one light emitting part having at least one organic layer and a light emitting layer, wherein the at least one organic layer comprises a compound represented by Chemical Formula 1 or 2.

Organic light emitting display device

An organic light emitting display device is provided. The organic light emitting display device may include at least one light emitting part between an anode and a cathode, and the at least one light emitting part having at least one organic layer and a light emitting layer, wherein the at least one organic layer comprises a compound represented by Chemical Formula 1 or 2.

The present invention provides a white pigment comprising a ZIF-based (zeolitic imidazolate framework) powder having a structure in which zinc (Zn) and an imidazole-based organic substance are bonded, a polymer resin film comprising the white pigment and a method for changing a color of a medium using the white pigment.

White pigment comprising ZIF-based powder, polymer resin film and method for changing color of medium using white pigment

Disclosed herein are an organic light emitting diode including: at least two light emitting stacks interposed between an anode and a cathode and including at least one light emitting material layer; and a charge generation layer interposed between the light emitting stacks. The charge generation layer includes an N-type charge generation layer and a P-type charge generation layer, wherein the N-type charge generation layer and the P-type charge generation layer are stacked in such direction for the N-type charge generation layer to face the anode and for the P-type charge generation layer to face the cathode. The N-type charge generation layer includes a compound represented by Formula 1. The P-type charge generation layer includes any one selected from the group consisting of a compound represented by Formula 2, a compound represented by Formula 3, and a combination thereof. The material for N-type charge generation layers and the material for P-type charge generation layers of the disclosure can secure low driving voltage and long lifespan of an organic light emitting diode when used in the organic light emitting diode. Compounds of Formulae 1, 2, and 3 are as defined herein.

Organic light emitting diode

An organic light emitting display device is disclosed. The organic light emitting display device comprises an anode; an organic layer on the anode; and a cathode on the organic layer, wherein the organic layer comprises a compound including a carbazole compound having hole characteristics and a material having electron characteristics.

Disclosed is an organic light emitting diode. The organic light-emitting diode comprises at least one light-emitting part between an anode and a cathode, wherein the at least one light-emitting part has at least one organic layer and an emissive layer. The at least one organic layer is composed of a compound having one or more heteroatoms, and the compound has an energy level due to the heteroatoms and conductive characteristics due to the energy level.

Organic light-emitting diode

An organic light emitting display device is discussed. The organic light emitting display device may include at least one light emitting part between an anode and a cathode, the light emitting part including at least one organic layer and a light emitting layer, wherein the organic layer includes an organic compound, and the organic compound includes a triazine compound having a substituent with a steric effect.

An organic light emitting display device is discussed. The organic light emitting display device can include at least two or more light emitting parts each including a light emitting layer and an electron transport layer; and a charge generation layer between the two or more light emitting parts and including an N-type charge generation layer, wherein the electron transport layer includes an electron transport compound including a functional group with high electron mobility, and the N-type charge generation layer includes a charge generation compound including a functional group for matching the energy level of the electron transport compound.

An organic light emitting display device and an organic layer are disclosed. The organic light emitting display device includes an anode, an organic layer over the anode, and a cathode over the organic layer. In one aspect, the organic layer may include an indolocarbazole compound. In another aspect, the organic layer may include a compound by linking a carbazole derivative and a carbazole compound to an aryl group or a heteroaryl group.

An organic light emitting display device is disclosed. The organic light emitting device includes a first light emitting part between an anode and a cathode, the first light emitting layer having a hole injection layer, a first hole transport layer, and a first light emitting layer; a second light emitting part over the first light emitting part, the second light emitting part having a second hole transport layer and a second light emitting layer; and a first charge generation layer between the first light emitting part and the second light emitting part, the first charge generation layer having a P-type charge generation layer, wherein at least one among the hole injection layer, the first hole transport layer, the second hole transport layer, and the P-type charge generation layer includes a carbonitrile compound.

An organic light emitting display device is disclosed. The organic light emitting display device comprises an anode, an organic layer over the anode, and a cathode over the organic layer. The organic layer may include a heterocyclic compound. Alternatively, the organic layer may include a spirobisfluorene compound with hole transfer properties and a material with electron transfer properties.

Growing community of inventors

Seoul, South Korea

Jungkeun Kim