Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.

Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.

Abstract: Disclosed herein are a food storage apparatus with improved security performance due to performing of a lock/unlock function from far away and a method of controlling the same. Also, provided are a food storage apparatus which allows a user far away to take appropriate measures by reporting approach of an unauthorized person, opening of a door, etc. or to check a thief or stolen food and a method of controlling the same. The food storage apparatus includes a body in which a storage space for storing food is formed, a door installed on the body to be openable, a locking unit which locks the door, a communication unit which communicates with an external terminal to receive a locking command, and a control unit which controls the locking unit to lock the door when the locking command is received from the terminal.

Abstract: Disclosed herein are a food storage apparatus with improved security performance due to performing of a lock/unlock function from far away and a method of controlling the same. Also, provided are a food storage apparatus which allows a user far away to take appropriate measures by reporting approach of an unauthorized person, opening of a door, etc. or to check a thief or stolen food and a method of controlling the same. The food storage apparatus includes a body in which a storage space for storing food is formed, a door installed on the body to be openable, a locking unit which locks the door, a communication unit which communicates with an external terminal to receive a locking command, and a control unit which controls the locking unit to lock the door when the locking command is received from the terminal.

Abstract: A refrigerator including a main body forming a refrigerating compartment; a door being rotated selectively in a first direction or in a second direction opposite to the first direction to open the refrigerating compartment; a wire assembly connecting the door with the main body; and a door cap coupled to the door, the door cap including a first accommodating section to receive the wire assembly when the door is rotated in the first direction, and a second accommodating section being opposite to the first accommodating section to receive the wire assembly when the door is rotated in the second direction. With this configuration, a refrigerator is provided in which an installation position of a wire assembly is conveniently altered in correspondence to an opening direction of a door.