The invention relates to lighting emitting devices and systems comprising a luminescent composition, said luminescent composition comprising: (i) a first emitting material, said first emitting material having a host lattice doped with EU.sup.3+ ions; (ii) a second emitting material, said second emitting material having a host lattice doped with Tb.sup.3+ ions; and (iii) sensitizer material, which sensitizer material is excitable in the violet-to-blue (400 to 480 nm) wavelength range and has an emission spectrum which overlaps at least partly with one or more excitation bands of the first emitting material and with which overlaps at least partly with one or more excitation bands of the second emitting material.

An electroluminescent element including an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, in which the electroluminescent element further includes an electron transport layer including n-type semiconductor particles and a first insulating polymer, and a hole transport layer including p-type semiconductor particles, the electron transport layer is provided between the cathode and the light-emitting layer, the hole transport layer is provided between the anode and the light-emitting layer, and a volume proportion of the n-type semiconductor particles in the electron transport layer is smaller than a volume proportion of the p-type semiconductor particles in the hole transport layer.

A fused ring compound and applications thereof in organic electronic components, particularly in organic electroluminescent diodes; an organic electronic component comprising the fused ring compound, and applications thereof in organic electroluminescent diodes and in display and lighting technologies; and a formulation comprising the fused ring compound, and applications thereof in the preparation of organic electronic components. By optimizing the component structure, good component performance can be achieved, and especially, a high-performance OLED component can be implemented, which provide good material and preparation technology choices for full-color display and lighting applications.

A display apparatus capable of improving image quality is provided. In the display apparatus, an adder circuit is provided inside and outside a display region, and the adder circuit has a function of adding a plurality of pieces of data supplied from a source driver. Some components of the adder circuit are separately arranged in a pixel region. Thus, limitation on the size of a component included in the adder circuit can be eased, and data addition can be performed efficiently. In addition, by providing the other components included in the adder circuit outside the display region, the number of wirings in the display region can be reduced and the aperture ratio of the pixel can be increased.

The present invention relates to an organic electroluminescent device comprising a light-emitting layer B containing at least one host compound H of Formula (I) ##STR00001##
wherein each of X′.sub.1 and X′.sub.2 is independently from another selected from the group consisting of nitrogen and an optionally substituted carbon atom, and wherein at least one of R′.sub.1—R′.sub.10 is CN and at least one of R.sub.A—R.sub.E is a substituted silane residue.

An element includes an electron transportation layer containing nanoparticles, a QD layer containing QD phosphor particles, and a mixed layer sandwiched between the electron transportation layer and the QD layer to be adjacent to these layers. The mixed layer contains QD phosphor particles and nanoparticles.

A display device in accordance with the disclosure includes a substrate, an insular semiconductor layer, a gate insulation film, a plurality of control lines extending in a row direction, a first interlayer insulation film, and a plurality of data signal lines extending in a column direction, all of which are provided in a stated order. The insular semiconductor layer, residing in a display area, is electrically separated from the plurality of control lines and the plurality of data signal lines and overlaps one of the plurality of control lines in a plan view taken normal to the substrate.

A light-emitting element includes: a first electrode; a first carrier transport layer in electrical contact with the first electrode; a second electrode separated from the first electrode; a second carrier transport layer in electrical contact with the second electrode; and a light-emitting layer, wherein at least part of the light-emitting layer overlaps on part of the first carrier transport layer, and part of the light-emitting layer overlaps on part of the second carrier transport layer, and in plan view, the first carrier transport layer and the second carrier transport layer face each other with the light-emitting layer provided in between.

A quantum dot including: a core including a first semiconductor nanocrystal material including zinc, tellurium, and selenium; and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc, selenium, and sulfur, wherein the quantum dot does not include cadmium, and in the quantum dot, a mole ratio of the sulfur with respect to the selenium is less than or equal to about 2.4:1. A production method of the quantum dot and an electronic device including the same are also disclosed.

A quantum dot including: a core including a first semiconductor nanocrystal material including zinc, tellurium, and selenium; and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc, selenium, and sulfur, wherein the quantum dot does not include cadmium, and in the quantum dot, a mole ratio of the sulfur with respect to the selenium is less than or equal to about 2.4:1. A production method of the quantum dot and an electronic device including the same are also disclosed.