Abstract: Discussed is a delayed fluorescence compound of Formula 1: wherein n is 1 or 0, and A is selected from Formula 2: wherein D is selected from Formula 3: and each of “L1” and “L2” is independently selected from Formula 4: wherein R1 in the Formula 2 is selected from hydrogen or phenyl, and each of X, Y, and Z is independently selected from carbon and nitrogen, and wherein at least two selected from X, Y, and Z are nitrogen, and R2 in the Formula 4 is selected from one of hydrogen and C1 alkyl through C10 alkyl.

Abstract: Discussed is a delayed fluorescence compound including a first electron donor moiety of indolo-[3,2,1-j,k]carbazole; a second electron donor moiety selected from indolo-[3,2,1-j,k]carbazole, carbazole, or triphenylamine; and an electron acceptor moiety selected from dibenzothiophene sulfone or diphenyl sulfone, wherein the first and second electron donor moieties are combined to the electron acceptor moiety, and the electron acceptor moiety is combined to a third position or a sixth position of the first electron donor moiety.

Abstract: Discussed is an organic electroluminescent device including a first charge carrying layer being disposed adjacent to a first electrode; and a second charge carrying layer disposed adjacent to a second electrode, wherein the first charge carrying layer includes an emitting part, a hole injection part and a hole transporting part between the hole injection part and the emitting part, wherein at least one of the hole injection part, the hole transporting part and the emitting part includes a host material having an organic compound of Formula: wherein R is substituted or non-substituted C1 to C12 alkyl, and A and B are symmetrically or asymmetrically positioned in 2-position or 7-position of the fluorene core, and wherein each of A and B is independently selected from substituted or non-substituted aromatic group or substituted or non-substituted heterocyclic group.

Abstract: The present invention provides a phosphorescent compound of following formula: wherein each of X and Y is independently selected from an aromatic group and a heterocyclic group.

Abstract: Discussed is an organic electroluminescent device including a first charge carrying layer being disposed adjacent to a first electrode; and a second charge carrying layer disposed adjacent to a second electrode, wherein the first charge carrying layer includes an emitting part, a hole injection part and a hole transporting part between the hole injection part and the emitting part, wherein at least one of the hole injection part, the hole transporting part and the emitting part includes a host material having an organic compound of Formula: wherein R is substituted or non-substituted C1 to C12 alkyl, and A and B are symmetrically or asymmetrically positioned in 2-position or 7-position of the fluorene core, and wherein each of A and B is independently selected from substituted or non-substituted aromatic group or substituted or non-substituted heterocyclic group.

Abstract: The present invention provides a phosphorescent compound of following formula: wherein each of X and Y is independently selected from an aromatic group and a heterocyclic group.

Abstract: Disclosed are a blue phosphorescent compound with a high color purity and a high efficiency, and an organic electroluminescent device using the same. The blue phosphorescent compound is represented by the following Formula: wherein R1 to R5 are each independently hydrogen (H), fluorine (F), chlorine (Cl), bromine (Br), a cyano group, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C6 to C20 substituted or unsubstituted aromatic group, a C5 to C20 substituted or unsubstituted heterocyclic group, a C1 to C6 amine group, a C6 to C20 aromatic-substituted amine group, or a C5 to C20 heterocycle-substituted amine group, X is selected from nitrogen (N), oxygen (O), phosphorous (P) and sulfur (S) atoms, at least one of A1, A2, A3 and A4 is nitrogen (N), and the remaining are selected from hydrogen (H)-substituted carbon, and alkyl or alkoxy-substituted carbon, L is a monodentate or bidentate ligand and n is 1 to 3.

Abstract: An organic electroluminescent device includes a first substrate including a plurality of pixel regions; a thin film transistor on the first substrate and in each pixel region; a second substrate facing the first substrate; an organic electroluminescent diode on the second substrate and connected to the thin film transistor; a seal pattern at edges of the first and second substrates; and an adhesive layer including a plurality of conductive balls, an inner space defined by the first substrate, the second substrate and the seal pattern filled with the adhesive layer.

Abstract: An organic electroluminescent device includes a first substrate including a plurality of pixel regions; a thin film transistor on the first substrate and in each pixel region; a second substrate facing the first substrate; an organic electroluminescent diode on the second substrate and connected to the thin film transistor; a seal pattern at edges of the first and second substrates; and an adhesive layer including a plurality of conductive balls, an inner space defined by the first substrate, the second substrate and the seal pattern filled with the adhesive layer.

Abstract: Provided is an organic EL device having a lower power consumption and high performance and enabling to display separate pictures on bidirectional screens as well as to display the same picture on the bidirectional screens, and a driving apparatus thereof. The organic EL device includes: a first organic EL panel for a unidirectional display; and a second organic EL panel for a unidirectional display, each of the first and second organic EL panels having a substrate, a first electrode, an emitting layer and a second electrode, wherein the first organic EL panel and the second organic EL panel are coupled so as to display pictures in bidirections. According to the present invention, a sufficient brightness can be obtained even under a low power. Also, since an opaque cathode is used, performance and transmittance are enhanced compared with the related art organic EL device using a transparent cathode.

Abstract: An organic electroluminescence (EL) device capable of digital driving, and a method for manufacturing the same are disclosed herein. The organic EL device comprises a substrate, an anode formed on the substrate, an organic EL layer formed on the anode and constructed as a multilayer structure including a hole injection layer and a hole transport layer, a cathode formed on the organic EL layer, and an interface deterioration preventing layer formed between the anode and the organic EL layer.