Electronic device includes lower electrodes, insulating layer covering end portion of each lower electrode, organic compound layer covering the insulating layer and electrode region of upper surface of each lower electrode, and upper electrode covering the organic compound layer. The electrode region of the upper surface is located on inner side of the end portion The organic compound layer includes mixed layer containing first organic material and second organic material having hole mobility lower than that of the first organic material. The insulating layer includes inclined surface inclined with respect to the upper surface of the lower electrode. Ratio of weight of the second organic material to weight of the first organic material is higher in second portion of the mixed layer on the inclined surface than in first portion of the mixed layer on the electrode region.

An electroluminescent device includes a first electrode and a second electrode facing each other, and a light emitting layer disposed between the first electrode and the second electrode, where the light emitting layer includes a first light emitting layer including a first quantum dot and a second light emitting layer including a second quantum dot and an n-type metal oxide.

A display apparatus including an OLED (organic light-emitting device) substrate having a structure in which at least one blue light-emitting unit and at least one green light-emitting unit are stacked, wherein the OLED substrate generates a mixed light of a blue light and a green light; and a color controller provided on the OLED substrate to adjust color of a light generated from the OLED substrate. The color controller includes a first color control element having a plurality of first quantum dots for green conversion; a second color control element having plurality of second quantum dots for red conversion; a third color control element for presenting a blue color; a first color filter provided on the first color control element; and a second color filter provided on the second color control element.

Disclosed is an organometallic compound represented by a following Chemical Formula 1. The organometallic compound acts as a dopant of a light-emitting layer of an organic light-emitting diode. Thus, operation voltage of the diode is lowered, and luminous efficiency and lifespan thereof are improved:

Ir(L.sub.A).sub.m(L.sub.B).sub.n  [Chemical Formula 1] where in the Chemical Formula 1, L.sub.A represents a main ligand, and is one selected from a group consisting of Chemical Formula 2-1, Chemical Formula 2-2, and Chemical Formula 2-3, L.sub.B denotes an ancillary ligand represented by a Chemical Formula 3, each of m and n denotes a number of the ligands bound to Ir (iridium), and m is 1, 2 or 3, and n is 0, 1 or 2, and a sum of m and n is 3.

An organic light emitting diode and an organic light emitting device including the organic light emitting diode are discussed. The organic light emitting diode can include a first compound represented by the following formula, a second compound as a p-type host and a third compound as an n-type host in an emitting material layer. As a result, the organic light emitting diode and the organic light emitting device have advantages in the driving voltage, the luminous efficiency and the lifespan.

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A light-emitting device with high emission efficiency is provided. The light-emitting device includes at least a light-emitting layer between an anode and a cathode. The light-emitting layer contains a light-emitting substance, a first organic compound, and a second organic compound. The light-emitting substance is a substance that emits fluorescent light. The first organic compound has any one of an anthracene skeleton, a tetracene skeleton, a phenanthrene skeleton, a pyrene skeleton, a chrysene skeleton, a carbazole skeleton, a benzocarbazole skeleton, a dibenzocarbazole skeleton, a dibenzofuran skeleton, a benzonaphthofuran skeleton, a bisnaphthofuran skeleton, a dibenzothiophene skeleton, a benzonaphthothiophene skeleton, a bisnaphthothiophene skeleton, and a fluoranthene skeleton. The second organic compound has any one of a fluorenylamine skeleton, a spirobifluorenylamine skeleton, a dibenzofuranylamine skeleton, a carbazolamine skeleton, a benzocarbazolamine skeleton, a dibenzocarbazolamine skeleton, a dibenzofuranamine skeleton, a benzonaphthofuranamine skeleton, a bisnaphthofuranamine skeleton, a dibenzothiophenamine skeleton, a benzonaphthothiopheneamine skeleton, a bisnaphthothiopheneamine skeleton, and an arylamine skeleton.

An organic EL device includes: an anode; a cathode; an anode side emitting unit; a cathode side emitting unit; a charge generating unit; a first organic layer having a thickness of 40 nm or less; and a second organic layer, in which the anode side emitting unit includes a first emitting layer which is provided close to the anode, a difference between an ionization potential Ip(H1) of a first host material in the first emitting layer and an ionization potential Ip(EBL) of a first organic material in the first organic layer satisfies a relationship of a numerical formula (Numerical Formula A1) below,

Ip(H1)−Ip(EBL)≤0.4 eV  (Numerical Formula A1).

An organic EL device includes: an anode; a cathode; an anode side emitting unit; a cathode side emitting unit; a charge generating unit; a first organic layer having a thickness of 40 nm or less; and a second organic layer, in which the anode side emitting unit includes a first emitting layer which is provided close to the anode, a difference between an ionization potential Ip(H1) of a first host material in the first emitting layer and an ionization potential Ip(EBL) of a first organic material in the first organic layer satisfies a relationship of a numerical formula (Numerical Formula A1) below,

Ip(H1)−Ip(EBL)≤0.4 eV  (Numerical Formula A1).

According to an aspect of the disclosure, a first light-emitting layer coincides in plan view with each whole of a plurality of pixel electrodes included in a plurality of second sub-pixels, and with each whole of a plurality of pixel electrodes included in a plurality of third sub-pixels. The first light-emitting layer is shaped into a continuous form. A third light-emitting layer in plan view: has an opening kb1 inside a peripheral end portion of each of a plurality of pixel electrodes included in a plurality of first sub-pixels, and coincides with a whole circumference of the peripheral end portion; and has an opening inside a peripheral end portion of each of a plurality of pixel electrodes included in the plurality of second sub-pixels, and coincides with a whole circumference of the peripheral end portion-Sg.

An organic light emitting diode and an organic light emitting device thereof are provided, each including a first compound represented by following structure, a second compound as a p-type host and a third compound as an n-type host in an emitting material layer. As a result, the organic light emitting diode and the organic light emitting device have advantages in the driving voltage, the luminous efficiency and the lifespan. The organic light emitting device includes the organic light emitting diode and can be a display device or a lighting device.

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