The present invention provides a heterocyclic compound and an organic light-emitting device including the heterocyclic compound. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltage, high luminance and long lifespan.

Organic light-emitting device

The present invention relates to novel organic electroluminescent compounds exhibiting high luminous efficiency, and organic electroluminescent devices comprising the same. The organic electroluminescent compounds according to the invention are represented by Chemical Formula (1):

Novel organic electroluminescent compounds and organic electroluminescent device using the same

Provided is a light emitting diode (LED) manufactured by using a wafer bonding method and a method of manufacturing a LED by using a wafer bonding method. The wafer bonding method may include interposing a stress relaxation layer (33) formed of a metal between a semiconductor layer (20) and a bonding substrate (31). When the stress relaxation layer is used, stress between the bonding substrate and a growth substrate may be offset due to the flexibility of metal, and accordingly, bending or warpage of the bonding substrate may be reduced or prevented.

Light-emitting device and method of manufacturing the same

Provided is an organic electroluminescence device having high luminous efficiency, high heat resistance and an extremely long lifetime. The organic electroluminescence device of the present invention includes an organic thin film layer composed of one or more layers containing at least a light emitting layer is interposed between a cathode and an anode. The light emitting layer includes a compound containing a condensed ring and a luminescent metal complex capable of emitting light having a red-based color. It is preferable that the compound containing a condensed ring includes a host material, while the luminescent metal complex capable of emitting light having a red-based color includes a phosphorescent dopant.

Organic Electroluminescent Device

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a stretchable substrate, a thin film transistor (TFT) formed over the stretchable substrate and including a plurality of electrodes, an OLED electrically connected to the TFT and including a plurality of electrodes, and a plurality of interconnection lines connected to the electrodes of the OLED and the TFT. At least one of the interconnection lines is configured to move in a stretching direction and rotate an electrode selected from the electrodes of the OLED and the TFT connected to the at least one interconnection line.

Organic light-emitting diode display

Disclosed is a light-emitting device having a light-emitting layer composed of a monomolecular film of quantum dots, which is enhanced in luminance and luminous efficiency. Specifically disclosed is a light-emitting device (1) comprising at least an anode (3), a hole transporting light-emitting layer (5) composed of a hole transporting material and a quantum dot (11), an electron transporting layer (7) and a cathode (4) in this order. The hole mobility of the electron transporting layer (7) is lower than that of tris(8-quinolinolato)aluminum complex (Alq3), and the hole transporting light-emitting layer (5) is so formed as to emit light when excitons generated in the electron transporting layer (7) are transferred into the light-emitting layer.

Light emitting device

PROBLEM TO BE SOLVED: To suppress impurity contamination that is the factor of a deterioration in element performance such as a reduction in luminous efficiency and a deterioration in life characteristics in an organic electroluminescence element, using a coating film containing a low-molecular light emitting material as a light emitting layer; and to provide the organic electroluminescence element with good luminous characteristics. SOLUTION: The organic electroluminescence element has a first electrode layer, an anti-mixing layer formed on the first electrode layer, a light emitting layer that is a coating film formed directly on the anti-mixing layer and containing a low-molecular light emitting material, and a second electrode layer formed on the light emitting layer. By providing an organic electroluminescence element that the anti-mixing layer contains such a material as to maintain the film producing properties of the light emitting layer well, and not to deteriorate the optical characteristics of the light emitting layer; the purposes are achieved. COPYRIGHT: (C)2007,JPO&INPIT

Organic electroluminescence element

A main object of the present invention is to provide an organic EL element being excellent in light emitting characteristics, characteristics of an organic EL layer and current-voltage characteristic. To attain the object, the invention discloses—an organic electroluminescent element comprises a substrate, an anode layer formed on the substrate, an organic electroluminescent layer formed on the anode layer and—containing at least a light emitting layer, a semitransparent cathode layer formed on the organic electroluminescent layer, a transparent buffer layer formed on the semitransparent cathode layer and having an impact buffering function, and a transparent electroconductive protection layer formed on the transparent buffer layer and having an oxidation preventing function. A contact region in which the semitransparent cathode layer and the transparent electroconductive protection layer contact with each other is provided in a non-display area.

Organic electroluminescent element

A device including a substrate, two or more electrodes facing each other disposed on the substrate and a positive hole injection transport layer disposed between two electrodes among the two or more electrodes, wherein the positive hole injection transport layer contains a reaction product of a transition metal complex or complexes, and wherein at least one or more kinds of transition metals selected from the group consisting of vanadium, rhenium and platinum, or a mixture of molybdenum and one or more kinds of transition metals selected from the group consisting of vanadium, rhenium and platinum is contained in a central metal or metals of the transition metal complex or complexes.

Device comprising positive hole injection transport layer, method for producing the same and ink for forming positive hole injection transport layer

Disclosed is a device material for a hole injection transport layer. A fluorine-containing organic compound is attached to an organic-transition metal oxide composite which is a reaction product of an organotransition metal complex. Also disclosed are a device and an ink for a hole injection transport layer, the device and ink including the device material each, and a method for producing the device.

Device material for hole injection/transport layer, ink for forming hole injection/transport layer, device having hole injection/transport layer, and method for manufacturing same

Shigehiro Ueno

Papers

Light emitting device

Organic electroluminescence element

Organic electroluminescent element

Device comprising positive hole injection transport layer, method for producing the same and ink for forming positive hole injection transport layer

Device material for hole injection/transport layer, ink for forming hole injection/transport layer, device having hole injection/transport layer, and method for manufacturing same