The organic electroluminescent element prevents degradation of phosphorescent luminescent organic metal complexes in a light emitting layer, has a long life, and has superior color stability during continuously drive. The organic electroluminescent element has a blue light emitting layer with a phosphorescent light emitting organometallic complex (A) with a local maximum phosphorescent light emission wavelength on the short wave side of 480 nm or less, a phosphorescent light emitting organometallic complex (B), and a host compound. The content of complex (A) is greater than the content of the complex (B). The complex (A) and the host are such that a single layer made from complex (A) and the host compound, the value for the ratio ((D)/(C)) of the percent of remaining luminescence (C) which UV irradiation with a wavelength of 365 nm and the percent of remaining luminescence (D) with UV irradiation by a HgXe light source is 0.75-0.95.

The present invention relates to a novel indole-based compound having excellent hole injection and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescence device which includes the indole-based compound in one or more organic material layers thereof so as to improve characteristics such as light-emitting efficiency, driving voltage, and lifespan.

An emissive avionics display unit includes a thin, flexible emissive display surface that may be resized for reuse in a larger or smaller housing. The display surface may be removed from its housing and folded over, rolled over, or cut along an axis of the surface so that a smaller visible portion remains on which images may be displayed by the emissive display unit's drive electronics. The display surface may also be increased in size by unfolding or unrolling previously folded or unrolled portions. Resizing allows the emissive display surface and its drive electronics to be reused or customized to fit display housings of nonstandard shape or size, which housings may in turn be designed to conform to a broad variety of cockpit sizes and available surface areas.

An emissive avionics display unit includes a thin, flexible emissive display surface that may be resized for reuse in a larger or smaller housing. The display surface may be removed from its housing and folded over, rolled over, or cut along an axis of the surface so that a smaller visible portion remains on which images may be displayed by the emissive display unit's drive electronics. The display surface may also be increased in size by unfolding or unrolling previously folded or unrolled portions. Resizing allows the emissive display surface and its drive electronics to be reused or customized to fit display housings of nonstandard shape or size, which housings may in turn be designed to conform to a broad variety of cockpit sizes and available surface areas.

An organic EL device is constructed with a structure that can prevent deterioration in characteristics. An organic EL device is provided that includes at least two or more subpixels each including an organic compound layer including at least a light-emitting layer that emits light of a different color from the other light-emitting layer(s), the organic compound layer being interposed between a first electrode and a second electrode in a stacking manner, the subpixels being disposed separately from one another on a plane perpendicular to a direction of the stacking. Lateral surfaces of the organic compound layers are covered with films differing from subpixel to subpixel. This structure can prevent the organic EL device from deterioration in characteristics.

The invention relates to metal complexes and to electronic devices, in particular organic electroluminescence devices, containing said metal complexes.

The invention relates to metal complexes and to electronic devices, in particular organic electroluminescence devices, containing said metal complexes.

A display device has a light-emitting element layer including a plurality of light-emitting elements each of which includes a first electrode, a function layer, and a second electrode, and that emit mutually different colors of light. The function layer includes a first hole transport layer, a light-emitting layer provided on the first hole transport layer, and an electron transport layer provided on the light-emitting layer. The first hole transport layer contains a hole transport material, and the light-emitting layer contains a quantum dot and a ligand coordinating with the quantum dot. The first hole transport layer contains the quantum dot coordinating with the ligand, and the ligand coordinates with the quantum dot so as to prevent the hole transport material from being exposed to the light-emitting layer.

A display device has a thin film transistor layer, a light-emitting element layer, and an electron transport layer provided on a light-emitting layer. The light-emitting element layer includes a plurality of light-emitting elements each of which includes a first electrode, a function layer, and a second electrode, and that emit mutually different colors of light. A first hole transport layer contains a hole transport material, and the light-emitting layer contains a quantum dot. The first hole transport layer contains the quantum dot, and a hole transport material having a predetermined molecular weight or higher. The light-emitting layer contains the quantum dot and a ligand coordinating with the quantum dot. The first hole transport layer contains the quantum dot coordinating with the ligand. The ligand coordinates with the quantum dot so as to prevent the hole transport material from being exposed to the light-emitting layer.

A film-forming ink includes a film-forming material and a liquid medium in which the film-forming material is dissolved or dispersed. The liquid medium contains a first component which has a viscosity of less than 20 cp and a second component which has a boiling point at an atmospheric pressure within a range of ±30° C. relative to the boiling point at an atmospheric pressure of the first component and has a viscosity of 20 cp or more, and the second component is contained in an amount of 20 parts by weight or more and 500 parts by weight or less with respect to 100 parts by weight of the first component.