Samsung Display Co., Ltd.

Merck Patent Gmbh

Seunggak Yang

Mikyung Kim

Jihyun Seo

Youngkook Kim

Seokhwan Hwang

Kwanhee Lee

Jaehyun Lee

Samil Kho

Jino Lim

Heeyeon Kim

Yunjee Park

Jiwon Kwak

Hanbyul Jang

Byounghee Park

Jongwoo Kim

Jin-O Lim

Yoonhyun Kwak

Hyoyoung Lee

Junha Park

Eunjae Jeong

Aurélie Ludemann

Munki Sim

Junyoung Lee

Jaeyong Lee

Eunyoung Lee

Mieun Jun

Donghoon Kim

Niels Schulte

Sanghoon Yim

Anna Hayer

Sooyon Kim

Donghwan Kim

Beomjin Kim

Hyungseok Jang

Hyoungkun Kim

Jinwoong Kim

Yeongji Im

Eunkyoung Kim

Sungkyung Kim

Jeongin Yi

Namwoo Kim

Jeongin Yl

A light-emitting device includes a hole transport region including two layers each including a Compound A group, a Compound B group, or any combination thereof, wherein the Compound A group includes one or two amine groups, and the amine group includes a fluorene moiety, a carbazole moiety, a dibenzofuran moiety, a dibenzothiophene moiety, a dibenzosilole moiety, or any combination thereof, and the Compound B group does not includes an amine group, and includes a fluorene moiety, a carbazole moiety, a dibenzofuran moiety, a dibenzothiophene moiety, a dibenzosilole moiety, or any combination thereof.

Light-emitting device and electronic apparatus including the same

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an organic layer disposed between the first electrode and the second electrode and includes an emission layer; and a first compound and a second compound; wherein the first compound includes a hole transport compound not including an electron transport moiety, and the second compound includes an electron transport compound including an electron transport moiety or a bipolar compound including an electron transport moiety, wherein the second compound includes deuterium.

Organic light-emitting device and apparatus including the same

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer located between the first electrode and the second electrode and including an emission layer, wherein the emission layer includes a host and a dopant, the host includes a first compound and a second compound, and the first compound, the second compound, and the dopant are different from one another. Two compounds in the host included in the emission layer may have different HOMO and LUMO energy levels and may form an exciplex, and a difference between a HOMO energy level and a LUMO energy level of the exciplex (ΔE) may be greater than a difference between a HOMO energy level and a LUMO energy level of the dopant (ΔE).

An organic light-emitting includes a first electrode having a work function greater than about 4.9 eV and less than about 5.2 eV, a second electrode facing the first electrode, an organic layer disposed between the first electrode and the second electrode and including an emission layer, a hole transport region disposed between the first electrode and the emission layer, wherein the hole transport region includes a first hole transport layer including a first hole-transporting material, and the first hole transport layer is substantially free of a p-dopant.

Organic light-emitting device and method of manufacturing the same

An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, a first emission layer disposed on the hole transport region and including a first light-emitting host and a first light-emitting dopant, a second emission layer disposed on the first emission layer and including a first electron transport material and a second light-emitting dopant, an electron transport region disposed on the second emission layer and including a second electron transport material, and a second electrode disposed on the electron transport region, wherein a triplet energy of the first light-emitting host (T1), a triplet energy of the second light-emitting dopant (T1) and a triplet energy of the second electron transport material (T1) satisfy a relation of T1&#x3c;T1&#x3c;T1. High emission efficiency may be shown.

Organic electroluminescence device

An organic light-emitting device and a display apparatus including the organic light-emitting device includes a light emitting layer having one or more host materials having unexpectedly low driving voltage, high efficiency and a long life span.

Organic light-emitting device and display apparatus including organic light-emitting device

An organic light-emitting device is provided. The organic light-emitting device includes: an anode; a cathode; and an organic layer between the anode and the cathode and including an emission layer, wherein the emission layer includes a first emission layer including a first host, a second host, and a first dopant, and a second emission layer including a third host, a fourth host, and a second dopant, and the organic light-emitting device satisfies Equations 1 and 2.

Organic light-emitting device

An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound represented by Formula 1: 

An organic light-emitting display apparatus includes a first sub-pixel, a second sub-pixel, and a third sub-pixel configured to emit different colors of light. The organic light-emitting display apparatus includes: a substrate; first through third pixel electrodes; a first organic emission layer configured to emit light having a first wavelength; a second organic emission layer configured to emit light having a second wavelength; a third organic emission layer configured to emit light having a third wavelength; an opposite electrode; a capping layer over the opposite electrode and having a refractive index with respect to the first wavelength that is higher than a refractive index with respect to the second wavelength by at least 7%; and a thin-film encapsulation layer over the capping layer.

Organic light-emitting display apparatus

A condensed-cyclic compound is represented by Formula 1: where X, Lto L, Rto R, Arto Ar, c1 to c3, a1 to a2, and b1 to b3 are as defined in the specification.

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

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, the electron transport region including an intermediate layer, wherein the emission layer includes a first compound and a second compound, each independently selected from compounds represented by Formula 1, and the intermediate layer includes a third compound and a fourth compound, each independently selected from compounds represented by Formula 2: 

An organic light-emitting device and a flat panel display apparatus, the device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including an emission layer, wherein the organic layer includes a hole transport region between the first electrode and the emission layer, the hole transport region including an auxiliary layer and at least one selected from a hole transport layer and a hole injection layer, and an electron transport region between the emission layer and the second electrode, the electron transport region including at least one selected from a hole blocking layer, an electron transport layer, and an electron injection layer, wherein the auxiliary layer includes a compound represented by Formula 1 and a compound represented by Formula 2: 

A carbazole-based compound and an organic light-emitting device, the carbazole-based compound being represented by Chemical Formula 1 

Carbazole-based compound and organic light-emitting device including the same

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

Compound and organic light-emitting device comprising same

An organic light-emitting device includes an organic layer including an emission layer between a first electrode and the second electrode, and a hole transport region including an auxiliary layer between the first electrode and the emission layer, the hole transport region. The auxiliary layer includes a first material and a second material that satisfy Equations 1-1 and 1-2:0 eV&#x3c;&#x2266;0.6 eV&#x2003;&#x2003;&#x3c;Equation 1-1&#x3e;0 eV&#x3c;&#x2266;0.6 eV&#x2003;&#x2003;&#x3c;Equation 1-2&#x3e;wherein in Equation 1-1 and 1-2, Eis a highest occupied molecular orbital energy (HOMO energy) of the first material; Eis a lowest unoccupied molecular orbital energy (LUMO energy) of the first material; Eis a HOMO energy of the second material; and Eis a LUMO energy of the second material.

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Yongin, South Korea

Seunggak Yang