Provided is a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic device using the same, and an electronic device.

Provided is a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic device using the same, and an electronic device.

A light-emitting element includes an anode electrode, cathode electrode, an EML, and an HTL. The HTL includes a hole transport material, and a first polymer containing a polysiloxane bond in the main chain and having a functional group including a π-conjugated electron pair in a side chain of the first polymer.

A display device includes a first subpixel including a light-emitting layer of a first color, a second subpixel adjacent to the first subpixel in a row direction or a column direction, the second subpixel including a light-emitting layer of a second color, and a third subpixel adjacent to the first subpixel and the second subpixel in a diagonal direction, the third subpixel including a light-emitting layer of a third color, wherein the first subpixel to the third subpixel include light-emitting regions that are geometrically similar to one another, the light-emitting regions of two of the first subpixel to the third subpixel are in the same size, and a light-emitting region of remaining one of the first subpixel to the third subpixel is larger than the light-emitting regions of the two of the first subpixel to the third subpixel.

A semiconductor device having favorable and stable electrical characteristics is provided. The semiconductor device includes a first and a second transistor over an insulating surface. The first and the second transistors each include a first insulating layer, a semiconductor layer over the first insulating layer, a second insulating layer over the semiconductor layer, and a first conductive layer overlapping with the semiconductor layer with the second insulating layer interposed therebetween. The first insulating layer includes a convex first region that overlaps with the semiconductor layer and a second region that does not and is thinner than the first region. The first conductive layer includes a part over the second region where a lower surface of the first conductive layer is positioned below a lower surface of the semiconductor layer. The second transistor further includes a third conductive layer overlapping with the semiconductor layer with the first insulating layer interposed therebetween.

The present invention relates to heteroleptic carbene complexes comprising at least two different carbene ligands, to a process for preparing the heteroleptic carbene complexes, to the use of the heteroleptic carbene complexes in organic light-emitting diodes, to organic light-emitting diodes comprising at least one inventive heteroleptic carbene complex, to a light-emitting layer comprising at least one inventive heteroleptic carbene complex, to organic light-emitting diodes comprising at least one inventive light-emitting layer, and to devices which comprise at least one inventive organic light-emitting diode.

The present invention relates to heteroleptic carbene complexes comprising at least two different carbene ligands, to a process for preparing the heteroleptic carbene complexes, to the use of the heteroleptic carbene complexes in organic light-emitting diodes, to organic light-emitting diodes comprising at least one inventive heteroleptic carbene complex, to a light-emitting layer comprising at least one inventive heteroleptic carbene complex, to organic light-emitting diodes comprising at least one inventive light-emitting layer, and to devices which comprise at least one inventive organic light-emitting diode.

Disclosed herein is an organic light-emitting diode capable of operating at a low voltage with high efficiency. It comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A or B, and the compound represented by the following Chemical Formula C. Chemical Formulas A, B and C are as described in the Specification.

Disclosed herein is an organic light-emitting diode capable of operating at a low voltage with high efficiency. It comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A or B, and the compound represented by the following Chemical Formula C. Chemical Formulas A, B and C are as described in the Specification.

A light-emitting element includes: a cathode; an anode; a light-emitting layer provided between the cathode and the anode and containing quantum dots; an electron-transport layer provided between the light-emitting layer and the cathode; and a hole-transport layer provided between the light-emitting layer and the anode. The light-emitting layer includes a first light-emitting layer containing first quantum dots to which first ligands are coordinated, and further includes a second light-emitting layer provided closer to the electron-transport layer than to the first light-emitting layer, and containing second quantum dots to which second ligands are coordinated. A dipole moment of the first ligands is larger than a dipole moment of the second ligands.