Abstract: A new luminescent material and an electroluminescent display device using the same are disclosed, in which the luminescent material includes a compound expressed by the following chemical formula 1 and may be used as a dopant of a light emitting layer of a green, yellow-green or red color:

Abstract: Disclosed is a novel organometallic compound in which a main ligand (LA) has a fused ring structure including a thiophene group. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode. Thus, an operation voltage of the diode is lowered, and luminous efficiency and a lifespan thereof are improved.

Abstract: Disclosed is a combination of host materials of a red light-emitting layer that can lower an operation voltage of an organic light-emitting diode, and improve light-emitting efficiency and lifetime thereof. In addition, disclosed is a charge scavenger which causes quenching with polaron to reduce triplet polaron quenching (TPQ) and roll-off occurring in the organic light-emitting diode. Further, disclosed is an organic light-emitting diode including the charge scavenger.

Abstract: Disclosed is a novel organometallic compound in which a main ligand (LA) has a fused ring structure including a thiophene group. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode. Thus, an operation voltage of the diode is lowered, and luminous efficiency and a lifespan thereof are improved.

Abstract: Disclosed is a novel organometallic compound which reduces or suppresses triplet polaron quenching (TPQ) and roll-off phenomena to improve light-emitting efficiency and lifespan of an organic light-emitting diode including the compound. Further, the organic light-emitting diode including the compound is disclosed. The organic light-emitting diode including the compound may include a first electrode, a second electrode, and one or more light-emitting stacks between the first electrode and the second electrode.

Abstract: Disclosed is a novel organometallic compound represented by following Chemical Formula 1. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode.

Abstract: 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(LA)m(LB)n??[Chemical Formula 1] where in the Chemical Formula 1, LA 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, LB 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.

Abstract: 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.

Abstract: A new luminescent material and an electroluminescent display device using the same are disclosed, in which the luminescent material includes a compound expressed by the following chemical formula 1 and may be used as a dopant of a light emitting layer of a green, yellow-green or red color: