Samsung Display Co., Ltd.

Sungkyunkwan University

Samsung Displayco., Ltd.

Jinsoo Hwang

Hyein Jeong

Sungwook Kim

Myeongsuk Kim

Seokgyu Yoon

Jungsub Lee

Wonjun Song

Changwoong Chu

Seungsoo Yoon

Jaehong Kim

An organic light-emitting device having a low driving voltage, high efficiency, and a long lifespan is provided. The device includes a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, a first compound, and a second compound. Various chemical structures for the first compound and the second compound are provided.

Organic light-emitting device

According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer. The hole transport region includes a first compound represented by Formula 1 and a second compound represented by Formula 2:

An organic light emitting device and a display device, the organic light emitting device including a first electrode; a hole transport region on the first electrode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a second electrode on the electron transport region, wherein the hole transport region includes a compound represented by the following Formula 1: 

Organic light emitting device and display device including the same

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; and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes a hole transport layer, and a hole auxiliary layer between the hole transport layer and the emission layer. The hole auxiliary layer includes a first compound represented by Formula 1, and the hole transport layer includes a second compound represented by Formula 2: 

A condensed-cyclic compound and an organic light-emitting device including the same are provided. The condensed-cyclic compound is represented by Formula 1: wherein, in Formulae 1, 2A, and 2B, ring Ais selected from a benzene group, a naphthalene group, a pyridine group, a pyrimidine group, a pyrazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, and a cinnoline group; ring Ais selected from a pyridine group, a pyrimidine group, a pyrazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, and a cinnoline group; and ring Ais selected from groups represented by Formula 2A and groups represented by Formula 2B. Further details about the compounds are presented.

Condensed-cyclic compound and organic light-emitting device comprising the same

An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, an emission layer disposed between the first electrode and the second electrode and a hole transport region disposed between the first electrode and the emission layer. The hole transport region includes a first compound represented by Formula 1 and a second compound represented by Formula 2, and the first compound and the second compound are different from each other.

A condensed cyclic compound represented by Formula 1 and an organic light-emitting device including the condensed cyclic compound are provided; 

Condensed cyclic compound and organic light-emitting device comprising the same

A condensed cyclic compound and an organic light-emitting device, the compound being represented by Formula 1 below: 

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

A condensed cyclic compound and an organic light-emitting device, the condensed cyclic compound being represented by one of the following Formulae 1 or 2: 

According to one or more embodiments, 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; and a hole transport region between the first electrode and the emission layer. The hole transport region includes a first compound represented by Formula 1A and a second compound represented by Formula 1B: 

An organic light-emitting device including: a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer, wherein the hole transport region comprises a first compound represented by Formula 1 and a second compound represented by Formula 2:  When the first compound represented by Formula 1 and the second compound represented by Formula 2 are used in the hole transport layer and the hole auxiliary layer, respectively, an organic light-emitting device may have improved driving voltage, efficiency, brightness, and lifespan characteristics.

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Yongin-si, South Korea

Jinsoo Hwang