A volumetric type three-dimensional display device can include a plurality of voxels having a polyhedron shape laminated three-dimensionally. A unit display panel in which an organic electroluminescent device and a polymer-dispersed liquid crystal device are laminated from the outside is configured on at least one surface of the polyhedron shape of the voxels.

The present invention relates to organic electroluminescent devices comprising a light-emitting layer B comprising a host material H.sup.B, a first thermally activated delayed fluorescence (TADF) material E.sup.B, and a depopulation agent S.sup.B.

A composition comprising a first compound capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is provided. The first compound includes at least one substituent R, where each of the at least one substituent R has the formula of: - - -G.sup.1-G.sup.2, where the dashed line denotes the bond through which R is attached in the first compound; G.sup.1 is a non-aromatic cyclic or polycyclic group; G.sup.2 is selected from aryl and heteroaryl; and G.sup.1 and G.sup.2 are independently, optionally further substituted with a substituent selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof. Organic light emitting devices, consumer products, and formulations containing the first compound are also provided.

An OLED and a display device has OLED are provided. The OLED includes an anode; an organic emission layer positioned on the anode, the organic emission layer includes a multilayer functional layer; a diffusion layer is positioned between at least two adjacent functional layers of the multilayer functional layer, the diffusion layer dissociates metal ions, the metal ions is diffusing to the functional layer adjacent to the diffusion layer for filling traps of the functional layer which is adjacent to the diffusion layer. The OLED of this invention could fill traps of the organic molecular materials, and decreases joule heating effect which generated by getting rid of the carriers bonded by traps. Therefore, it achieves to enhance life time and luminous performance of OLED.

An electronic device includes a light source member configured to provide a first light, a color conversion member disposed on the light source member and including a first conversion material that converts the first light into a second light and a second conversion material that converts the first light into a third light, and a low-refractive index layer disposed on the light source member and disposed on at least one of upper and lower portions of the color conversion member. The low-refractive index layer includes a matrix part, a plurality of hollow inorganic particles dispersed in the matrix part, and a plurality of void parts defined by the matrix part.

An organic electroluminescent device having high luminous efficiency, low driving voltage, and particularly a long lifetime is provided by combining various materials for an organic electroluminescent device, which have excellent hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state, and durability as materials for an organic electroluminescent device having high luminous efficiency and high durability so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer includes an amine derivative of the following general formula (2) having a condensed ring structure. ##STR00001##

To provide a light-emitting material containing a compound having a high excitation triplet level, particularly a host material of a light emitting layer, as a material for an organic electroluminescent device with high efficiency, and also to provide an organic electroluminescent device with high efficiency and high luminance by using the material. A light-emitting material containing a compound having a carbazole ring structure represented by the following general formula (1), and an organic electroluminescent device containing a pair of electrodes and one layer or plural layers including at least a light emitting layer intervening between the electrodes, the light emitting layer containing as a constitutional material thereof the light-emitting material. ##STR00001##

An organic EL device includes a pair of electrodes and an organic compound layer between pair of electrodes. The organic compound layer includes an emitting layer including a first material, a second material and a third material, in which singlet energy EgS(H) of the first material, singlet energy EgS(H2) of the second material, and singlet energy EgS(D) of the third material satisfy a specific relationship.

The present invention relates to organic electroluminescent devices comprising a light-emitting layer B comprising a host material H.sup.B, a first thermally activated delayed fluorescence (TADF) material E.sup.B, and a depopulation agent S.sup.B.

The invention relates to a method for producing a semiconductor component comprising a radiation-emitting optical semiconductor chip or a plurality of radiation-emitting optical semiconductor chips, said method comprising: applying the radiation-emitting optical semiconductor chip or the plurality of radiation-emitting optical semiconductor chips to a deformable flat support deforming the support; and permanently fixing the deformation.