Samsung Display Co., Ltd.

Korea Advanced Institute of Science and Technology

Naoyuki Ito

Dongwoo Shin

Younsun Kim

Seulong Kim

Jungsub Lee

Youn-Sun Kim

Dong-Woo Shin

Seul-Ong Kim

Jino Lim

Jung-Sub Lee

Hyein Jeong

Chang-Woong Chu

Dong Woo Shin

Seul Ong Kim

Jung Sub Lee

Youn Sun Kim

Yeong-Eun Kim

Myeong-Suk Kim

Hwan-Hee Cho

Jaekook Ha

Sung-Wook Kim

Sehun Kim

Dukki Kim

Jongwon Park

Changwoong Chu

Jaeyun Kim

Jihyun Seo

Seungmook Lee

Yun-Ho Lee

Yunho Lee

An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layer, and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (E) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (E) of a dopant of the emission layer satisfy the following relationship:.

Organic light-emitting device

An organic light-emitting device having low-driving voltage, improved efficiency, and long lifespan includes: a first electrode; a second electrode facing the first electrode; a first layer between the first electrode and the second electrode, the first layer including a first compound; a second layer between the first layer and the second electrode, the second layer including a second compound; and a third layer between the second layer and the second electrode, the third layer including a third compound; wherein the first compound does not include a nitrogen-containing heterocyclic group comprising *═N—*′ as a ring forming moiety, and wherein the first compound, the second compound, and the third compound each independently include at least one group selected from groups represented by Formulae A to C:

An organic light emitting device including a first electrode, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode, wherein the electron transport region may include a first compound represented by one selected from Formulae 1A to 1E, and at least one selected from the hole transport region and the electron transport region may include a second compound represented by Formula 2A or 2B:

An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layer, and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (E) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (E) of a dopant of the emission layer satisfy the following relationship:

An organic light-emitting device is provided. The organic light-emitting device includes: a first electrode; a second electrode; an organic layer between the first electrode and the second electrode, the organic layer including: an emission layer; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, 50% or more of a total volume of the second electrode being silver (Ag), the hole transport region including an amine-based polymer including a first repeating unit represented by Formula 1, and a number average molecular weight of the amine-based polymer being about 1,000 or more.

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the hole transport region includes a first compound, the emission layer includes a second compound and a third compound, and the electron transport region includes a fourth compound and a fifth compound. An organic light-emitting device according to the one or more embodiments may have high efficiency and long lifespan.

An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein: the emission layer includes a first compound, at least one of the hole transport region and the electron transport region includes a second compound, the first compound is represented by Formula 1A or 1B, and the second compound is represented by Formula 2A or 2B:

An organic light-emitting device having low-driving voltage, improved efficiency, and long lifespan includes: a first electrode; a second electrode facing the first electrode; a first layer between the first electrode and the second electrode, the first layer including a first compound; a second layer between the first layer and the second electrode, the second layer including a second compound; and a third layer between the second layer and the second electrode, the third layer including a third compound; wherein the first compound does not include a nitrogen-containing heterocyclic group comprising *&#x2550;N&#x2014;*' as a ring forming moiety, and wherein the first compound, the second compound, and the third compound each independently include at least one group selected from groups represented by Formulae A to C: 

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the electron transport region includes a first compound, at least one selected from the hole transport region and the electron transport region includes a second compound, the first compound is represented by one selected from Formulae 1A to 1D, and the second compound is represented by Formula 2A or Formula 2B: 

Provided is a cross-linkable arylamine-based compound represented by Formula 1a or 1b, a polymer obtained therefrom, a light-emitting device including the polymer, and an electronic apparatus including the light-emitting device. The light-emitting device includes a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode and comprising an emission layer, wherein the intermediate layer includes at least one of the arylamine-based polymer formed by cross-linking a cross-linkable arylamine-based compound represented by Formula 1a or 1b.

Cross-linkable arylamine-based compound, polymer obtained therefrom, light-emitting device including the polymer, and electronic apparatus including the light-emitting device

An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layer, and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (E) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (E) of a dopant of the emission layer satisfy the following relationship:E&#x3e;E.

A condensed cyclic compound represented by Formula 1 and an organic light-emitting device including the same. 

Condensed cyclic compound and an organic light-emitting device including the same

A light emitting device includes: a first electrode; a second electrode facing the first electrode; m emission units stacked between the first electrode and the second electrode; and m&#x2212;1 charge generating layer(s) between the two adjacent emission units from among the m emission units, m&#x2212;1 charge generating layer(s) including m&#x2212;1 n-type charge generating layer(s) and m&#x2212;1 p-type charge generating layer(s), wherein m is an integer of 2 or greater, a maximum emission wavelength of light emitted from at least one of the m emission units differs from that of light emitted from at least one of the other emission units, at least one of the m&#x2212;1 n-type charge generating layer(s) includes a metal-containing material and an electron transporting metal-non-containing material.

Light-emitting device

A condensed cyclic compound represented by Formula 1-1 or Formula 1-2 and an organic light-emitting device including the same. 

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Yongin, South Korea

Naoyuki Ito