Abstract: The present disclosure relates to a compound, and an organic electroluminescent material and an organic electroluminescent device comprising the same. By comprising a compound and/or an organic electroluminescent material according to the present disclosure, an organic electroluminescent device having low driving voltage, and/or high luminous efficiency, and/or long lifespan characteristic, compared to the conventional organic electroluminescent device can be provided.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1 and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as a host material, an organic electroluminescent device having a lower driving voltage and/or higher luminous efficiency and/or improved lifespan properties compared to a conventional organic electroluminescent device may be provided.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having improved lifetime properties as compared with a conventional organic electroluminescent device.

Abstract: Embodiments relate to a smart hospital bed operating method and a smart hospital bed operating system performing same, the method comprising the steps of: receiving a hospital bed assignment query including a hospitalization indication condition of a waiting patient; searching for a hospital bed that matches the hospitalization indication condition; and if a list of searched hospital beds does not include an empty hospital bed, pre-assigning, to the waiting patient, an inpatient bed occupied by an inpatient on the basis of a hospital bed assignment plan table including an expected discharge date of the inpatient.

Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound and at least one second host compound and an organic electroluminescent device comprising the same. By comprising the specific combination of the compound according to the present disclosure as host materials, an organic electroluminescent device having low driving voltage, high luminous efficiency and long lifespan characteristics can be provided.

Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound according to the present disclosure as a single host material, or by comprising the specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage and/or luminous efficiency.

Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having improved driving voltage, luminous efficiency, lifetime properties, and/or power efficiency.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having improved lifetime properties as compared with a conventional organic electroluminescent device.

Abstract: A cassette assembly and a method of manufacturing fluorescent lamps using the cassette assembly are provided. The cassette assembly includes a housing defining a process chamber and having a plurality of holes in which glass tubes for the fluorescent lamps are inserted to communicate with the chamber, a carrying unit including two or more porous plates through which the glass tubes are fitted, a plurality of ring members disposed on the porous plates to preliminarily fix the glass tubes to the carrying unit by allowing the outer circumferences of the glass tubes to contact, and a locking unit for changing the glass tubes from the preliminary fixing status to a lockup status by varying contact pressure applied between the ring members and the glass tubes.

Abstract: A method of fabricating an electrode of an external electrode fluorescent lamp (EEFL) includes plating nickel on both ends of a glass tube through an electroless nickel plating process and forming electrodes by dipping the glass tube into an electrode material including zinc, and tin or lead.

Abstract: There is provided a fluorescent material coating apparatus for a fluorescent lamp. The fluorescent material coating apparatus includes a cassette on which a plurality of glass tubes are detachably mounted, a delivery member having a delivery chamber communicating with first ends of the glass tubes, a negative pressure generating unit for allowing fluorescent solution to be drawn into the glass tubes by generating a negative pressure in the glass tubes communicating with the delivery chamber by lowering the pressure of the delivery chamber, a dry air supplying unit for supplying dry air to the delivery chamber to dry the fluorescent solution applied on inner surfaces of the glass tubes, a solution tank containing the fluorescent solution and disposed below the glass tubes mounted on the cassette, and a moving unit for allowing lower end portions of the glass tubes mounted in the delivery chamber to be dipped into the fluorescent solution contained in the solution tank.

Abstract: A method of fabricating an electrode of an external electrode fluorescent lamp (EEFL) includes plating nickel on both ends of a glass tube through an electroless nickel plating process and forming electrodes by dipping the glass tube into an electrode material including zinc, and tin or lead.

Abstract: A cassette assembly and a method of manufacturing fluorescent lamps using the cassette assembly are provided. The cassette assembly includes a housing defining a process chamber and having a plurality of holes in which glass tubes for the fluorescent lamps are inserted to communicate with the chamber, a carrying unit including two or more porous plates through which the glass tubes are fitted, a plurality of ring members disposed on the porous plates to preliminarily fix the glass tubes to the carrying unit by allowing the outer circumferences of the glass tubes to contact, and a locking unit for changing the glass tubes from the preliminary fixing status to a lockup status by varying contact pressure applied between the ring members and the glass tubes.

Abstract: There is provided a fluorescent material coating apparatus for a fluorescent lamp. The fluorescent material coating apparatus includes a cassette on which a plurality of glass tubes are detachably mounted, a delivery member having a delivery chamber communicating with first ends of the glass tubes, a negative pressure generating unit for allowing fluorescent solution to be drawn into the glass tubes by generating a negative pressure in the glass tubes communicating with the delivery chamber by lowering the pressure of the delivery chamber, a dry air supplying unit for supplying dry air to the delivery chamber to dry the fluorescent solution applied on inner surfaces of the glass tubes, a solution tank containing the fluorescent solution and disposed below the glass tubes mounted on the cassette, and a moving unit for allowing lower end portions of the glass tubes mounted in the delivery chamber to be dipped into the fluorescent solution contained in the solution tank.

Abstract: The invention relates to dicyclic metal complex formazan dye derivatives and processes for producing compositions and for using them in dyeing processes.