The present invention relates to a compound of the Formula (I) ##STR00001##
wherein at least one of R.sup.1 to R.sup.10 and/or Ar.sup.4 is a group having the Formula (II) ##STR00002##
wherein the asterisk symbol “*” in Formula (II) represents the position of binding of the group having the Formula (II); L is selected from substituted or unsubstituted C.sub.6 to C.sub.18 arylene; Ar.sup.1 is selected from substituted or unsubstituted C.sub.3 to C.sub.24 heteroaryl, wherein the heteroaryl comprises at least two N-atoms; Ar.sup.2 and Ar.sup.3 are independently selected from substituted or unsubstituted C.sub.6 to C.sub.24 aryl and/or substituted or unsubstituted C.sub.4 to C.sub.24 heteroaryl, wherein Ar.sup.2 and Ar.sup.3 are selected differently from each other; Ar.sup.4 is selected from the group consisting of substituted or unsubstituted C.sub.1 to C.sub.16 alkyl, substituted or unsubstituted C.sub.6 to C.sub.24 aryl, substituted or unsubstituted C.sub.2 to C.sub.24 heteroaryl and a group having the general Formula (II); R.sup.1 to R.sup.10 are independently selected from the group consisting of H, D, F, C.sub.1 to C.sub.20 alkyl, C.sub.6 to C.sub.20 aryl, C.sub.2 to C.sub.20 heteroaryl and a group having the Formula (II); and R.sup.1 and R.sup.2; or R.sup.2 and R.sup.3 or R.sup.3; and R.sup.4; or R.sup.5 and R.sup.6 may independently from each other form a fused ring or system of fused rings; a semiconducting layer comprising the same, an organic electronic device comprising the same as well as a display or a lighting device comprising the organic electronic device.

An organic compound having a tetraphenyl moiety and at least one fused hetero aryl moiety having at least one oxygen and/or sulfur on a ring and bonded to the tetraphenyl moiety directly or indirectly, and a light emitting diode and a light emitting device having the organic compound are disclosed. The organic compound has excellent thermal resistance property and hole mobility property. The organic compound can be incorporated into a hole transfer layer, an electron blocking layer and/or a charge generation layer of the light emitting diode. Therefore, the light emitting diode and light emitting device according to the present invention have decreased driving voltage and enhanced luminous efficiency.

The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device including the heterocyclic compound in an organic material layer.

An organic electroluminescence device includes two or more emitting units disposed between an anode and a cathode, and an intermediate layer, in which the intermediate layer contains a phenanthroline compound, the laminated emitting unit includes a first emitting layer containing a first host material and a second emitting layer containing a second host material, and a triplet energy T.sub.1(H1) of the first host material and a triplet energy T.sub.1(H2) of the second host material satisfy a relationship of a numerical formula (Numerical Formula 3),

T.sub.1(H1)>T.sub.1(H2)  (Numerical Formula 3).

Disclosed herein are an organic light emitting diode including: at least two light emitting stacks interposed between an anode and a cathode and including at least one light emitting material layer; and a charge generation layer interposed between the light emitting stacks. The charge generation layer includes an N-type charge generation layer and a P-type charge generation layer, wherein the N-type charge generation layer and the P-type charge generation layer are stacked in such direction for the N-type charge generation layer to face the anode and for the P-type charge generation layer to face the cathode. The N-type charge generation layer includes a compound represented by Formula 1. The P-type charge generation layer includes any one selected from the group consisting of a compound represented by Formula 2, a compound represented by Formula 3, and a combination thereof. The material for N-type charge generation layers and the material for P-type charge generation layers of the disclosure can secure low driving voltage and long lifespan of an organic light emitting diode when used in the organic light emitting diode. Compounds of Formulae 1, 2, and 3 are as defined herein.

A display device and a method for manufacturing a display device are disclosed. The display device may prevent a leakage current from occurring between adjacent pixels. The display device comprises a substrate, a first electrode provided in each of a first subpixel and a second subpixel arranged to be adjacent to the first subpixel, on the substrate, a trench provided between the first subpixel and the second subpixel, a light emitting layer provided in each of the first subpixel and the second subpixel on the first electrode, a second electrode provided in each of the first subpixel and the second subpixel on the light emitting layer, and a third electrode electrically connecting the second electrode provided in the first subpixel with the second electrode provided in the second subpixel. The second electrode is disconnected between the first subpixel and the second subpixel by the trench.

The present invention relates to an organic material and to an electronic device comprising the organic material, particularly to an electroluminescent device, particularly to an organic light emitting diode (OLED), wherein the semiconducting material comprises a tetrasubstituted unsymmetric pyrazine.

The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the heterocyclic compound in an organic material layer.

One object of this invention is to provide a novel light-emitting device with low power consumption. The light-emitting device includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first electrode, a second electrode, and a light-emitting layer. The second light-emitting element includes the first electrode, a third electrode, and the light-emitting layer. The second electrode comprises only a first conductive film, and the third electrode comprises a second conductive film and a third conductive film. The first electrode has a function of reflecting light. The second conductive film has functions of reflecting light and transmitting light. The first conductive film and the third conductive film each have a function of transmitting light.

A display apparatus, a mask assembly for manufacturing the display apparatus, and an apparatus for manufacturing the display apparatus. The display apparatus includes a substrate, a first pixel electrode, a second pixel electrode, and a third pixel electrode located on the substrate and adjacent to one another, a first lower emission layer, a second lower emission layer, and a third lower emission layer respectively corresponding to the first through third pixel electrodes and configured to emit light of different wavelength bands, a counter electrode located on the first through third lower emission layers, and a first common layer located between the first through third pixel electrodes and the first through third lower emission layers. The first common layer includes a 1-1.sup.st pattern unit, a 1-2.sup.nd pattern unit, and a 1-3.sup.rd pattern unit respectively corresponding to the first through third pixel electrodes and disconnected from one another.