Provided is a new composition of matter for boron containing organic molecules which can be used as hosts or emitters in OLED devices. The compound can have a structure of Formula I ##STR00001##

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

An organic light emitting device including: a substrate; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode and including an emission layer, wherein one of the first electrode and the second electrode is a reflective electrode and the other is a semitransparent or transparent electrode, and wherein the organic layer includes a layer having at least one of the compounds having at least one carbazole group, and a flat panel display device including the organic light emitting device. The organic light emitting device has low driving voltage, excellent current density, high brightness, excellent color purity, high efficiency, and long lifetime.

An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.

A condensed cyclic compound represented by Formula 1:

##STR00001## wherein in Formula 1, Ar and R.sub.1 to R.sub.8 are the same as described in the specification.

According to an aspect of the present disclosure, a compound having a metal planar tetradentate coordination configuration is disclosed. In the compounds, the metal M is Pt or Pd; the four coordinating atoms are Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 and are each selected from N, C, and O. The compound includes a substituent R, and atoms M, Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 are used to define a first plane that passes through the metal M and is positioned to have a minimum sum of shortest distances with Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4. At least one non-hydrogen atom in R falls within a distal circle of a cylinder extending perpendicular to the first plane, where the distal circle of the cylinder is a height h from the base circle and the height h ranges from 3.3 Å to 4.8 Å.

A ligand for metal complexes are disclosed, in which an imidazole ring is fused to an aromatic ring as a substituent or an imidazole ring is fused to a six-member ring of the original ligand. The features of these elements within the ligand afford a better device performance in general OLED device.

A compound of Formula I:

##STR00001## wherein ring A is a 5-membered or 6-membered aromatic ring; wherein R.sup.A, R.sup.B, and R.sup.C each independently represent mono to the maximum allowable substitution, or no substitution; wherein Y.sup.1 is absent or present, and when present is selected from the group consisting of a direct bond, O, S, Se, CRR′, NR, SiRR′, and BR; wherein each X.sup.1-X.sup.3 is N or CR; wherein at least one of X.sup.1-X.sup.3 is N; wherein each A.sup.1-A.sup.5 is independently C or N; wherein the maximum number of N atoms that can connect to each other within each ring is two; wherein each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof; wherein each R, R′, R.sup.A, R.sup.B, and R.sup.C is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein any two substituents may be joined or fused together to form a ring.

An organic light-emitting device having improved efficiency and lifespan includes: a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a first compound, a second compound, a third compound, and a fourth compound, the first compound, the second compound, the third compound, and the fourth compound are different from each other, the third compound includes a metal element having an atomic number of 40 or more, the fourth compound includes boron (B), the third compound and the fourth compound each satisfy Conditions 1-1 and 1-2 below, and the fourth compound satisfies Condition 2 or 3:

T.sub.1(C3).sub.onset≥S.sub.1(C4).sub.onset  Condition 1-1

T.sub.1(C3).sub.max≥S.sub.1(C4).sub.max  Condition 1-2

K.sub.RISC(C4)≥10.sup.3 S.sup.−1  Condition 2

f(C4)≥0.1.  Condition 3

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.