Samsung Display Co., Ltd.

Lapto Co., Ltd.

Yunjee Park

Dongchan Lee

Seulong Kim

Tsuyoshi Naijo

Sungsoo Bae

Hyewon Choi

Mikyung Kim

Sungwook Kim

Kyungsik Kim

Jaeweon Hur

Seunggak Yang

Seungjin Chu

Jihyun Seo

SeulOng Kim

Juwan Maeng

Munsoo Kim

Eu-gene Oh

Kap-jong Han

Sungkyung Kim

An organic light-emitting device includes a mixed layer, an emission layer, and a buffer layer and satisfies one of Equation 1 or Equation 2 and Equation 3:1()≥1(Mix)+0.3 eV  Equation 11()≥1(Mix)+0.3 eV  Equation 21(Mix)<1(Buffer)+0.5 eV.  Equation 3.

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 between the first electrode and the second electrode, wherein the organic layer includes an emission layer, a first auxiliary layer, a second auxiliary layer, and an electron transport layer, the first auxiliary layer and the second auxiliary layer are disposed between the emission layer and the electron transport layer, the first auxiliary layer includes a first compound including a carbocyclic group that has three or more rings, and the second auxiliary layer includes: (i) a second compound that is a bipolar compound, (ii) a third compound that is a hole transport compound and a fourth compound that is an electron transport compound, or (iii) the second compound that is the bipolar compound and the fourth compound that is the electron transport compound.

An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, and the emission layer includes a compound represented by Formula 1 below, and thus the organic electroluminescence device may exhibit high luminous efficiency characteristics and improved service life characteristics.

Organic electroluminescence device and compound for organic electroluminescence device

An organic light-emitting device includes a mixed layer, an emission layer, and a buffer layer and satisfies one of Equation 1 or Equation 2 and Equation 3:1()&#x2265;1(Mix)+0.3 eV&#x2003;&#x2003;Equation 11()&#x2265;1(Mix)+0.3 eV&#x2003;&#x2003;Equation 21(Mix)&#x3c;1(Buffer)+0.5 eV.&#x2003;&#x2003;Equation 3

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: 

Organic light-emitting device

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

Yunjee Park