Abstract:
PURPOSE: An organic electroluminescent device and a display device are provided to reduce power consumption of the display device. CONSTITUTION: An organic electroluminescent device includes an anode(13), a cathode(15), an organic layer(14), and an electron transfer layer. The organic layer includes a light emitting layer and is arranged between the anode and the cathode. The electron transfer player comprises the organic layer and is arranged between the cathode and the light emitting layer.
Abstract:
PURPOSE: An organic electro-luminescence device, a displaying device, and an electronic appliance are provided to improve durability by preventing the generation of a black-spot and a bright-spot. CONSTITUTION: An anode(5) and an organic electro-luminescence functional layer(7) are formed on a substrate(3). An electron transferring layer(7c) is composed of heterocyclic compound. A cathode(11) is composed of a metal material. A protective film is formed on the cathode by an inorganic material. A transition metal complex layer(9) is formed between the electron-transferring layer and the cathode.
Abstract:
An organic electroluminescent device for red light emitting and a display apparatus are provided to ensure high luminous efficiency, chromatic purity and excellent lifetime. An organic electroluminescence device for color light emitting nature includes a positive electrode, a negative electrode, a light-emitting layer and an organic layer interposed between the positive electrode and the negative electrode. The light-emitting layer comprises a host material containing a polycyclic aromatic hydrocarbon compound with a mother skeleton with a ring member number of 4-7, and a guest material of red light emitting. The electron-transport layer containing a benzimidazole derivative represented by the formula (1) is adjacent to the light-emitting layer.
Abstract:
Disclosed is an easily-produced stack display element wherein light-emitting units respectively comprising an organic layer are stacked on top of one another. By using a stable material for at least a part of a charge-generating layer in such a display element, the display element can be improved in environmental resistance and charge injection efficiency from the charge-generating layer to the light-emitting units. Specifically disclosed is a display element (11) wherein a plurality of light-emitting units (14-1, 14-2) comprising at least an organic light-emitting layer (14c) are arranged between a cathode (16) and an anode (13), and a charge-generating layer (15) is interposed between the light-emitting units (14-1, 14-2). At least a part of the charge-generating layer (15) is composed of an oxide or fluoride containing at least either of an alkali metal and an alkaline earth metal.
Abstract:
An organic electroluminescent device of a single heterostructure is fabricated by forming a transparent electrode (anode) of ITO, a hole transport layer, an electron transport layer and a metal electrode (cathode) in that order on a glass substrate. An exciton generation promoting layer is formed between the hole transport layer and the electron transport layer. The hole transport layer is a two-layer structure consisting of a hole transport light emitting layer or a hole injection layer, and a hole transport light emitting layer. Exciton generation in the hole transport light emitting layers 4a and 4b can be promoted. The hole injection layer enables efficient hole injection.
Abstract:
An organic electroluminescent device has a single hetero structure comprising, on a glass substrate, an ITO transparent electrode, a hole transport layer, an electron transport layer and a metal electrode superposed in this order wherein a hole-blocking layer containing a bathophenanthroline derivative of the following general formula is interposed between the hole transport layer and the electron transport layer. In this way, the electron-hole-re-combination in the hole transporting luminescent layer can be promoted. General Formula of Bathophenanthoroline Derivative: wherein X and Y may be the same or different and independently represent a hydrogen atom except the case where a hydrogen atom is at the 2 or 9 position, a substituted or unsubstituted alkyl group except the case where a methyl group is at the 2 or 9 position, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted amino group, a halogen atom, a nitro group, a cyano group or a hydroxyl group provided that at least one of these groups is contained at an arbitrary position.
Abstract:
An organic electroluminescent device of a single heterostructure is fabricated by forming a transparent electrode (anode) of ITO, a hole transport layer, an electron transport layer and a metal electrode (cathode) in that order on a glass substrate. An exciton generation promoting layer is formed between the hole transport layer and the electron transport layer. The hole transport layer is a two-layer structure consisting of a hole transport light emitting layer or a hole injection layer, and a hole transport light emitting layer. Exciton generation in the hole transport light emitting layers 4a and 4b can be promoted. The hole injection layer enables efficient hole injection.
Abstract:
An electroluminescence device is disclosed, comprising at least three kinds of laminated bodies, in each of which an emission region is independently present in each of a hole transfer layer and an electron transfer layer, the laminated bodies comprising the hole transfer layers each comprising a layer comprising a common material, and the electron transfer layers each comprising a layer comprising a common material, and the electroluminescence device emitting at least three colors of light. A process for producing an electroluminescence device is also disclosed, comprising at least three kinds of laminated bodies, in each of which an emission region is independently present in each of a hole transfer layer and an electron transfer layer, the laminated bodies comprising the hole transfer layers each comprising a layer comprising a common material, and the electron transfer layers each comprising a layer comprising a common material, and the electroluminescence device emitting at least three colors of light, the process comprising a step of forming a first electrode, which is common in at least three kinds of the laminated bodies, on a common substrate, a step of forming the hole transfer layers by film formation of a common hole transfer layer forming material on a region containing at least three kinds of the laminated bodies on the first electrode, a step of forming the electron transfer layers by film formation of a common electron transfer layer forming material on a region containing at least three kinds of the laminated bodies on a region containing the hole transfer layers, and a step of forming second electrodes for at least three kinds of the laminated bodies on the electron transfer layers, to face the first electrode.
Abstract:
Provided is a display apparatus which can easily bond a drive panel (10) and a sealing panel (20) together. The drive panel (10) includes organic electroluminescence devices (10R), (10G) and (10B) on a substrate for drive (11) and extracts light from the side of the organic electroluminescence devices (10R), (10G) and (10B). The sealing panel (20) includes a color filter (22) on a substrate for sealing (21). The drive panel (10) and the sealing panel (20) are disposed to face each other, and the whole facing surfaces of the drive panel (10) and the sealing panel (20) are bonded together with an adhesive layer (30). The adhesive layer (30) is cured with at least heat, and is made of only one coating liquid or a combination of two or more coating liquids for curing. A temporary fixing portion (30A) is formed in an edge portion of the adhesive layer (30). The temporary fixing portion (30A) is made of, for example, an ultraviolet cure resin, and is formed so as to straddle between the sealing panel (20) and the drive panel to align their relative positions.