An organometallic compound represented by Formula 1:

M(L.sub.1).sub.n1(L.sub.2).sub.n2  Formula 1

wherein, M is a transition metal, L.sub.1 and L.sub.2 are ligands as provided herein, n1 and n2 are each independently 1 or 2, the sum of n1 and n2 is 2 or 3, and L.sub.1 is different from L.sub.2.

An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.

The present invention relates to certain fluorenes, to the use of the compounds in an electronic device, and to an electronic device comprising at least one of these compounds. The present invention furthermore relates to a process for the preparation of the compounds and to a formulation and composition comprising one or more of the compounds.

The present invention relates to a compound having the Formula (I) an intermediate of the compound, a process for preparing the compound, an organic semiconducting material comprising the compound and an organic electronic device comprising the same. The invention further relates to a display device or a lighting device comprising the organic electronic device.

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The present invention relates to a compound having the Formula (I) an intermediate of the compound, a process for preparing the compound, an organic semiconducting material comprising the compound and an organic electronic device comprising the same. The invention further relates to a display device or a lighting device comprising the organic electronic device.

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Provided is a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic device using the same, and an electronic device.

The present application relates to a hetero-cyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.

An organic molecule is disclosed comprising: a first chemical moiety with a structure of formula I, ##STR00001##
and two second chemical moieties, each at each occurrence independently from another with a structure of formula II, ##STR00002##
wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

A light emitting device and a light emitting display including the same. The light emitting device includes an anode and a cathode facing each other, a first stack and a second stack disposed between the anode and the cathode, the first stack including a first electron transport layer comprising a first material represented by Formula 1, a first blue light emitting layer containing a boron-based compound emitting light having a wavelength of 430 nm to 480 nm, and a first electron-blocking layer including a second material including a spirofluorene group, and at least one hydrogen atom on at least one side of the spirofluorene group is substituted by deuterium, and the second stack including at least two phosphorescent light emitting layers emitting light having a longer wavelength than that of the light emitted by the first blue light emitting layer, and a charge generation layer.

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A light emitting device and a light emitting display device that are capable of improving efficiency, driving voltage, and lifespan by varying the configuration of a layer adjacent to a blue light emitting layer in a blue fluorescent stack contacting a cathode are disclosed. The light emitting device includes stacks between an anode and a cathode, wherein an n.sup.th stack contacting the cathode is a first blue stack that includes a first hole transport layer, a first electron-blocking layer, a first blue light emitting layer containing a boron-based dopant having an emission peak of 430 nm to 480 nm, a first electron transport layer contacting the first blue light emitting layer, and an electron injection layer having two sides contacting the first electron transport layer and the cathode, respectively, wherein the first electron transport layer contains a mixture of a first material and a second material.